CN101634480A - System and method for controlling under-floor air distribution air-conditioning fan device in machine room - Google Patents
System and method for controlling under-floor air distribution air-conditioning fan device in machine room Download PDFInfo
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- CN101634480A CN101634480A CN200910090313A CN200910090313A CN101634480A CN 101634480 A CN101634480 A CN 101634480A CN 200910090313 A CN200910090313 A CN 200910090313A CN 200910090313 A CN200910090313 A CN 200910090313A CN 101634480 A CN101634480 A CN 101634480A
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- air
- floor
- temperature
- conditioning fan
- machine room
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/40—HVAC with raised floors
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses a system and a method for controlling an under-floor air distribution air-conditioning fan device in a machine room. The system comprises an infrared temperature measuring device used for measuring surface infrared temperature of an equipment cabinet in the machine room by infrared rays, and a control device used for regulating the air distribution speed and the air distribution period of the under-floor air distribution air-conditioning fan device when the absolute value of the difference between the surface infrared temperature and the preset surface infrared temperature of the equipment cabinet is bigger than a first preset difference value so as to enable the surface infrared temperature of the equipment cabinet to be regulated to the surface standard temperature. The system and the method dynamically regulate the air speed of the fan device at an air outlet of a ventilation floor according to the load change of the equipment in the machine room, thereby enabling the surface temperature of the equipment cabinet to be basically kept constant.
Description
Technical field
The present invention relates to the temperature control technology field of electronic information machine room, refer in particular to a kind of system and method that is used to control under-floor air distribution air-conditioning fan device in the machine room.
Background technology
Integrated along with electronic information machine room information technoloy equipment height, the phenomenon that its energy efficiency deviation and machine room heat dissipation capacity are day by day tended towards superiority begins to be subjected to the strong concern of all circles.
Air conditioner load in the hyundai electronics information system rooms mainly comes from the caloric value of main frame equipment and external accessory, accounts for 80～97% of air conditioner in machine room total load greatly; And in main equipments such as server, storage, network, the share of server accounts for 80% of the total heat dissipation capacity of equipment again greatly, therefore along with the integrated density of server continue increase, server apparatus district rack just becomes main heat island zone in the machine room.
Slave foundations plinth framework, when rack or bracket height greater than 1.8m, the equipment heat density is big and the big electronic information machine room of equipment heating amount should adopt the under-floor air distribution air-conditioning fan system, soon under the interior antistatic raised floor of machine room blow to thermic loads such as rack and equipment by the ventilation floor as the air supply plenum chamber of air-conditioning system in the space.
When designing the air-supply air-flow of under-floor air distribution air-conditioning cooling system to machine room now, generally be with reference to the temperature difference before and after equipment heating amount, the rack, and factor such as effective cross sectional area under floor level and the floor, calculate ventilation floor aperture area according to 30～40% of air-conditioning unit gas pushing quantity, and calculate air outlet and be able to make the rack cooling and required air quantity, so that can continuing to blow out the distinguished and admirable assurance of certain wind speed, the air outlet on the ventilating board make the rack in the machine room reach cooling.
Yet, air-conditioner air supply device exists air output can not implement the problem of dynamic adjustments with the frame load variations under the prior art ventilating board, because main frame equipment and external accessory are in the process of operation, caloric value can momentarily change, the distinguished and admirable maintenance constant wind speed that air-conditioner air supply device blows out by air outlet under ventilating board, can not be with the equipment heating amount during dynamic adjustments, will certainly make the variation of thereupon fluctuating of the rack surface temperature of equipment, it is overheated or cause unnecessary sub-cooled to cause the situation of waste air conditioner refrigerating energy consumption cabinet temperature to occur.
Summary of the invention
The purpose of technical solution of the present invention provides a kind of system and method for controlling under-floor air distribution air-conditioning fan device in the machine room, can be according to the load variations of equipment in the machine room and the dynamic adjustments blower fan apparatus at the wind speed at air outlet place, ventilation floor, make the equipment enclosure surface temperature can keep substantially constant.
For achieving the above object, one aspect of the present invention provides a kind of system that controls under-floor air distribution air-conditioning fan device in the machine room, comprising:
IR temperature measuring device is used for the surperficial infrared temperature by equipment enclosure in the infrared rays survey machine room;
Control device, when being used for absolute value when the difference of the surface standard temperature of described surperficial infrared temperature and predefined described equipment enclosure greater than one first preset difference value, regulate the air-supply wind speed and the air-supply cycle of described under-floor air distribution air-conditioning fan device, make the described surperficial infrared temperature of described equipment enclosure be adjusted to described surface standard temperature.
Preferably, above-mentioned described system also comprises:
Minute-pressure difference measurements device is used to measure on the plate face on ventilation floor in the machine room and the current differential pressure of plate face between down;
Wherein said control device also is used for, when described current differential pressure be on the occasion of the time, control described under-floor air distribution air-conditioning fan device and open; And when described current differential pressure be negative value, and when the absolute value of difference is greater than one second preset difference value between described current differential pressure and the preset standard pressure reduction, regulate the unlatching number of described under-floor air distribution air-conditioning fan device, make described current differential pressure be adjusted into described preset standard pressure reduction.
Preferably, above-mentioned described system also comprises:
The floor temperature measuring equipment is used to measure the floor surface regional temperature of ventilation floor surface in the machine room;
Wherein said control device also is used for, when the difference of the described surperficial infrared temperature of described equipment enclosure and described floor surface regional temperature during greater than one the 3rd preset difference value, regulate the air-supply wind speed and the air-supply cycle of described under-floor air distribution air-conditioning fan device, the described surperficial infrared temperature of described equipment enclosure and the difference of described floor surface regional temperature are adjusted to less than described the 3rd preset difference value.
Preferably, above-mentioned described system also comprises:
The instrument temperature measuring equipment is used to measure the case surface temperature of the instrument of described equipment enclosure;
Electric current electric weight instrument is used to measure the power consumption of described equipment enclosure;
Wherein, described control device also is used for, when the difference of the case surface normal temperature of described case surface temperature and described instrument during, regulate the air-supply wind speed and the air-supply cycle of described under-floor air distribution air-conditioning fan device in advance according to described power consumption greater than one the 4th preset difference value.
Preferably, above-mentioned described system also comprises:
Chip efficient metering device is used to calculate the operational efficiency of server chip in the described equipment enclosure;
Wherein, described control device also is used for according to described operational efficiency, calculates the expectation heat radiation power of described server chip, and regulates the air-supply wind speed and the air-supply cycle of described under-floor air distribution air-conditioning fan device in advance.
Preferably, above-mentioned described system, described IR temperature measuring device is installed on the air outlet place on described ventilation floor and/or is installed on the lifting scanning device at described machine room top.
Preferably, above-mentioned described system, described minute-pressure difference measurements device is installed on the wind-guiding impeller on described ventilation floor.
Preferably, above-mentioned described system, air-supply wind speed and air-supply cycle that described control device adopts stepping algorithm or ratio, integration and differential pid algorithm to calculate described under-floor air distribution air-conditioning fan device.
The present invention also provides a kind of method of controlling under-floor air distribution air-conditioning fan device in the machine room on the other hand, and described method comprises:
Measure the surperficial infrared temperature of equipment enclosure in the machine room;
Whether the absolute value of difference of surface standard temperature of judging described surperficial infrared temperature and predefined described equipment enclosure greater than one first preset difference value, if judged result is not for, then the air-supply wind speed of described under-floor air distribution air-conditioning fan device remains unchanged; If judged result for being, is then regulated the air-supply wind speed and the air-supply cycle of described under-floor air distribution air-conditioning fan device, make the described surperficial infrared temperature of described equipment enclosure be adjusted into described surface standard temperature.
Preferably, above-mentioned described method, described judged result are when being, described method also further comprises:
Measure on the plate face on ventilation floor in the machine room and the current differential pressure of plate face between down;
Judge described current differential pressure on the occasion of still negative value, if on the occasion of, then control described under-floor air distribution air-conditioning fan device and open; If negative value, then further judge that whether the absolute value of difference between described current differential pressure and the preset standard pressure reduction is greater than one second preset difference value, if judged result is for being, then regulate the unlatching number of described under-floor air distribution air-conditioning fan device, making described current differential pressure be adjusted into described preset standard presses, if judged result then keeps the unlatching invariable number of described under-floor air distribution air-conditioning fan device for not.
Technique scheme has following beneficial effect with respect to prior art: the described system and method for the specific embodiment of the invention, infrared temperature numerical value by monitoring equipment rack front surface, the air-supply blast at place, ventilation floor, the temperature difference between equipment enclosure surface temperature and the floor surface regional temperature, the case surface temperature of equipment enclosure instrument, the operational efficiency of rack power consumption and server chip, utilize stepping algorithm or PID (ratio, integration and differential) algorithm calculates the field demand of this equipment enclosure, thereby the air output that makes the interior under-floor air distribution air-conditioning ventilation floor of machine room blow out can dynamically be adjusted with the variation of frame load, reach and keep the equipment enclosure surface to be steady temperature substantially, and keep that air-flow blast that equipment enclosure sucked is constant to be the standard blast, satisfy the purpose of the desirable start running environment demand of equipment.
Description of drawings
Fig. 1 is used to control the structural representation of the system of under-floor air distribution air-conditioning fan device in the machine room for the specific embodiment of the invention is described;
Fig. 2 is used to control the schematic flow sheet of the method for under-floor air distribution air-conditioning fan device in the machine room for the specific embodiment of the invention is described.
The specific embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the accompanying drawings and the specific embodiments.
The described system and method that is used to control under-floor air distribution air-conditioning fan device in the machine room of the specific embodiment of the invention, surperficial infrared temperature by equipment enclosure in the real-time control measurement machine room, dynamically regulate the air-supply wind speed of under-floor air distribution air-conditioning fan device according to the outer variation of temperature of surface red, make the interior under-floor air distribution air-conditioning of machine room can dynamically adjust with the variation of frame load by the air output that the ventilation floor blows out, reaching maintenance equipment enclosure surface basic is steady temperature, satisfies the purpose of the desirable start running environment demand of equipment.
Below will be used to control that the system and method for under-floor air distribution air-conditioning fan device is described in detail in the machine room to the specific embodiment of the invention is described.
The structural representation of first embodiment of system as described in as Fig. 1 being, consult Fig. 1, described system comprises IR temperature measuring device 2, minute-pressure difference measurements device 3 and control device 5, in first embodiment, this IR temperature measuring device 2, minute-pressure difference measurements device 3 and control device 5 all are arranged at 1 below, ventilation floor, wherein:
This IR temperature measuring device 2 is used for the surperficial infrared temperature by equipment enclosure 7 in the infrared rays survey machine room, and in the specific embodiment of the invention, best, this IR temperature measuring device 2 is the temperature at place, measurement device rack 7 inlet scoops;
Control device 5, when being used for absolute value when the difference of the surface standard temperature of surperficial infrared temperature that records equipment enclosure 7 and predefined equipment enclosure 7 greater than one first preset difference value, regulate the air-supply wind speed and the air-supply cycle of described blower fan apparatus 4, to reach the purpose of conditioning equipment rack 7 surperficial infrared temperatures, make the surperficial infrared temperature of equipment enclosure 7 reach predefined surface standard temperature value.
In first embodiment of system of the present invention, described IR temperature measuring device 2 is arranged at the air outlet place on ventilation floor 1, be arranged at as Fig. 1 on the wind-guiding impeller 11 of ventilation floor 1 lower floor, this IR temperature measuring device 2 can be an infrared radiation thermometer, photosensitive head is visited between the grid of wind-guiding impeller 11, to guarantee not to be subjected to the interference of ambient light reflection and refraction, as this IR temperature measuring device 2 is a measuring distance and measurement hot spot D: the ratio of S is 8: 1 a infrared radiation thermometer, adjust the installation site of infrared radiation thermometer on wind-guiding impeller 11, in order to the infrared temperature of detecting devices rack 7 front surface upper positions; This IR temperature measuring device 2 also can be the infrared radiation thermometer that a visual field FOV is 60 degree, adjusts the installation site of infrared radiation thermometer on wind-guiding impeller 11, with the infrared temperature of 60 degree hot spot range detection equipment enclosure, 7 front surface upper positions.
In addition, the stream condition " pressure that wind speed is big is little " of being stated according to the hydrodynamics bernoulli principle, restricted by this characteristic, machine room is inherent bigger owing to pressure near under-floor air distribution air-conditioning air outlet place, and make near the air output on the ventilation floor of this under-floor air distribution air-conditioning less, again owing to transferred out certain air quantity already on ventilation floor near the under-floor air distribution air-conditioning unit, making air output away from the ventilation floor of under-floor air distribution air-conditioning unit promptly can manifest to some extent reduces, can be and arrived the floor end because of the characteristic of bernoulli principle " pressure that wind speed is little is big ", cause the increase of air-supply blast under the floor, make that the ventilation floor in this zone carries air quantity but to increase; Because the electronic equipment cabinet in the existing machine room normally closes on the air conditioner in machine room setting, air-conditioning can influence the air output on the floor that partly ventilates, and ventilation floor air quantity is reduced again.
Comprehensively above-mentioned, needed distinguished and admirable air quantity in the machine room can be exported in the floor in order to guarantee to ventilate, reach the purpose of conditioning equipment rack surface infrared temperature, must monitor the air-supply blast (also promptly ventilate between floor upper face and the lower face pressure reduction) at ventilation floor place in real time, guarantee the ventilation floor can continue outputting standard air-supply blast (be generally-20Pa).
Therefore, in the specific embodiment of the invention, described system also comprises minute-pressure difference measurements device 3, is used to measure on the plate face on ventilation floor 1 and the current differential pressure of plate face between down.Described minute-pressure difference measurements device 3 can be a micro-pressure sensor, as Fig. 1, this minute-pressure difference measurements device also is arranged on the wind-guiding impeller 11 of ventilation floor 1 lower floor, survey pin for two of micro-pressure sensor and be respectively applied on the plate face of measuring ventilation floor 1 and the blast under the plate face, in order to obtain pressure reduction between the two.In the specific embodiment of the invention, acquisition range of this air-supply blast be-50Pa extremely+the positive negative value of 50Pa, the air-supply blast that collects when ventilation floor 1 is in running status is a negative value, the air-supply blast that when ventilation floor 1 is in non-operating state, collects on the occasion of, as detect on the occasion of, the blower fan apparatus 4 that then needs to open under-floor air distribution air-conditioning makes 1 operation of ventilation floor.Wherein the startup of blower fan apparatus 4 operation all starts with high wind shelves, forwards corresponding demand gear operation after 10 seconds again in high wind shelves operation.
When minute-pressure difference measurements device 3 record described current differential pressure on the occasion of the time, illustrate that the blower fan apparatus 4 of under-floor air distribution air-conditioning is not opened, the air supply air-conditioner unit was normally blown on machine room was interior.Under this kind situation, this moment is if IR temperature measuring device 2 records the absolute value of difference of the surperficial infrared temperature of equipment enclosure 7 and predefined surface standard temperature less than first preset difference value, then devices illustrated rack 7 can be kept the work of surface standard temperature, do not need to open the blower fan apparatus 4 of under-floor air distribution air-conditioning, keep the closed condition of this blower fan apparatus 4 to get final product; If IR temperature measuring device 2 records the absolute value of difference of the surperficial infrared temperature of equipment enclosure 7 and predefined surface standard temperature greater than first preset difference value, though then going up the interior group of air supply air-conditioner in the explanation machine room can normally blow, but can not make equipment enclosure 7 keep the work of surface standard temperature, therefore need this moment to open blower fan apparatus 4, further regulate the air-supply wind speed of described blower fan apparatus 4 and air-supply during the cycle.
And when minute-pressure difference measurements device 3 to record described current differential pressure be negative value, and described current differential pressure and preset standard pressure reduction (as be-20Pa) between the absolute value of difference during greater than one second preset difference value (as 2Pa), the number of opening blower fan apparatus 4 is described, can not provide and make equipment enclosure 7 keep the needed air output of surface standard temperature, therefore need to regulate the unlatching number of described under-floor air distribution air-conditioning fan device 4, the described current differential pressure at 1 place, ventilation floor is adjusted near described preset standard pressure reduction.
As Fig. 1, described control device 5 and described IR temperature measuring device 2, the blower fan apparatus 4 of described minute-pressure difference measurements device 3 and under-floor air distribution air-conditioning connects, be used for infrared temperature numerical value by ad-hoc location such as position 8 or 9 places, position on the IR temperature measuring device 2 collecting device racks 7, perhaps by the average infrared temperature numerical value in the IR temperature measuring device 2 collecting device racks 7 front surfaces 60 degree hot spot scopes, surface standard temperature (being the desirable reasonable value that equipment enclosure 7 sucks air-flows) with the infrared temperature numerical value that records and predefined equipment enclosure 7 compares afterwards, when judging that the difference between the two temperatures value is bigger, greater than one first preset difference value, as be 0.5 when spending, then devices illustrated rack 7 need adjust the air-supply wind speed on ventilation floor when the preload field demand, so that equipment enclosure 7 can be kept desirable suction gas flow temperature consistently, reach the microenvironment parameter that makes equipment enclosure 7 the facing the wind front surface less purpose that in the unit interval, fluctuates.In addition, described control device 5 is outside monitoring equipment rack 7 surface red in the variations in temperature, also monitor in real time on the 1 plate face of ventilation floor with the plate face under current differential pressure, and adjust the unlatching number of blower fan apparatus 4 thereupon, satisfy the condition that the ventilation floor can continue outputting standard air-supply blast.
The described system of the specific embodiment of the invention can also comprise a field controller, this field controller is connected with described control device 5 by control circuit, has man machine operation interface, can show intuitively that described IR temperature measuring device 2 gathers the infrared temperature numerical value of specific location on the equipment enclosure 7 that obtains or the average infrared temperature numerical value the specific region in, and can preestablish the surface standard temperature (being the desirable reasonable value of equipment enclosure 7 suction air-flows) of input equipment rack 7 by this field controller.
Those skilled in the art of the present invention are appreciated that the described control device 5 of the specific embodiment of the invention is not limited to and are arranged at ventilation floor 1 lower layer space that this control device 5 also can directly be arranged in the equipment machine room, is wholely set with field controller.
Based on above-mentioned, described control device 5 is by the infrared temperature numerical value of described IR temperature measuring device 2 equipment enclosure that collects 7 front surfaces, utilize stepping algorithm or PID (ratio, integration and differential) algorithm to calculate the field demand of this equipment enclosure 7, promptly calculate the air-supply wind speed and the air-supply cycle of under-floor air distribution air-conditioning fan device, which kind of adhesive order the blower fan gear shift relay of determining under-floor air distribution air-conditioning fan device adopts to reach the field demand of equipment enclosure 7, the surface temperature of equipment enclosure 7 is remained approach the surface standard temperature value.
When described control device 5 utilizes pid algorithm can accurate Calculation the infrared temperature numerical value of equipment enclosure 7 front surfaces to be adjusted to the normal temperature value, needed air-supply wind speed of blower fan apparatus and air-supply cycle, those skilled in the art should be able to understand this algorithm, are not described in detail in this.
Below will be with the stepping algorithm to the infrared temperature numerical value of the described system of the specific embodiment of the invention according to described IR temperature measuring device 2 equipment enclosure that collected 7 front surfaces, the method for regulating the air-supply wind speed of under-floor air distribution air-conditioning fan device is elaborated.
The absolute value of difference of judging the infrared temperature numerical value of described IR temperature measuring device 2 equipment enclosure that collects 7 front surfaces and normal temperature value when described control device 5 is greater than described first preset difference value, and institute's infrared temperature numerical value that collects then makes the adjustable speed fan of under-floor air distribution air-conditioning fan device shut down during less than described normal temperature value; When the absolute value of the difference of collecting infrared temperature numerical value and normal temperature value less than described first preset difference value, and institute's infrared temperature numerical value that collects is during greater than described normal temperature value, according to the gap size between two numerical value, make the adjustable speed fan of under-floor air distribution air-conditioning fan device keep low speed, high speed or run up most, and when different operating condition, keep having a ventilation cycle respectively, drop to the normal temperature value until the front surface temperature that makes equipment enclosure 7.
Illustrate, if the normal temperature value that preestablishes equipment enclosure 7 front surfaces is 25 ℃, and first preset difference value is zero, promptly requires the front surface temperature value of equipment enclosure 7 should be suitable with 25 ℃ substantially.This moment, then described control device 5 made the adjustable speed fan of blower fan apparatus be in stop state when spending less than 25 as if the infrared temperature numerical value of described IR temperature measuring device 2 equipment enclosure that collects 7; When the infrared temperature numerical value that collects equipment enclosure 7 is 25～26 ℃, described control device 5 makes the blower fan apparatus low cruise, and the maintenance ventilation cycle is T1 (ventilation cycle can be set to 5 minutes N times, and ventilation cycle T1 can show by the man-machine interactive interface of field controller in the equipment machine room).
When the infrared temperature numerical value that collects equipment enclosure 7 was 26～27 ℃, described control device 5 made the operation of blower fan apparatus middling speed, and the maintenance ventilation cycle is T2; After this ventilation cycle T2 finishes, when the surperficial infrared temperature that detects equipment enclosure 7 drops to 25～26 ℃, described control device 5 can be adjusted to low cruise with blower fan apparatus, keeps certain ventilation cycle, drops to 25 degree until the surperficial infrared temperature that makes equipment enclosure 7.
When the surperficial infrared temperature that detects equipment enclosure 7 was spent greater than 27, then described control device 5 made the blower fan apparatus high-speed cruising, and maintenance blower fan apparatus ventilation cycle is T3; After this ventilation cycle T3 finishes, when the surperficial infrared temperature that detects equipment enclosure 7 drops between 26～27 ℃, control device 5 makes blower fan apparatus change the middling speed operation into, after keeping middling speed to move certain ventilation cycle, when the surperficial infrared temperature that detects equipment enclosure 7 drops between 25～26 ℃, control device 5 makes blower fan apparatus change low cruise into, keeps the certain ventilation cycle of low cruise, till the surperficial infrared temperature that makes equipment enclosure 7 drops to 25 degree.
Like this, by above-mentioned stepping algorithm, the mode of transferring the files by gradation, make the surperficial infrared temperature of equipment enclosure 7 finally reach predefined surface standard temperature value, thereby reach the purpose of the air output dynamic adjustment that makes the ventilation floor, to keep the stability of rack surface microenvironment parameter with the rack load variations.
In addition, described control device 5 is outside monitoring equipment rack 7 surface red in the variations in temperature, also monitor in real time on the 1 plate face of ventilation floor with the plate face under current differential pressure, when this current pressure reduction departs from preset standard pressure reduction (when 20Pa) big, when being 2Pa greater than second preset difference value, also further regulate the unlatching number of the blower fan apparatus 4 of under-floor air distribution air-conditioning, to change the air-supply blast at 1 place, ventilation floor, the described current differential pressure at 1 place, ventilation floor is adjusted near described preset standard pressure reduction, satisfies the condition that the ventilation floor can continue outputting standard air-supply blast.
Based on above-mentioned, the described system of the specific embodiment of the invention, except that the surface temperature of monitoring equipment rack 7, also utilize minute-pressure difference measurements device 3 to monitor the air-supply blast at place, ventilation floor, and, keep constant effect substantially to reach the suction air-flow that makes equipment enclosure by the air-supply wind speed and the air-supply cycle of control device according to air-supply blast adjusting blower fan apparatus.
It will be appreciated by those skilled in the art that, described IR temperature measuring device 2 is not limited to only be installed in the wind-guiding impeller 11 of ventilation floor 1 lower floor, also can be set to the infrared scan thermal imaging system as this IR temperature measuring device 2, the infrared scan thermal imaging system can be installed in the scanning device of machine room furred ceiling, as The Cloud Terrace or overhead traveling crane, gather the surperficial infrared temperature of each equipment enclosure in the machine room with scan mode, more advanced, this thermal infrared imager can be installed on can be in machine room on the machinery equipment of walking freely.
In addition, in the specific embodiment of the invention, described system also is used for the temperature difference of monitoring equipment rack upper face temperature and floor surface regional temperature, when this two-part temperature difference is big, illustrate that machine room inner air flow speed is slow excessively, need further to regulate the air-supply wind speed and the air-supply cycle of blower fan apparatus.Therefore, described system also comprises:
Floor temperature measuring equipment (not shown) is used to measure the floor surface regional temperature of ventilation floor surface in the machine room;
Wherein said control device 5 also is connected with this floor IR temperature measuring device, when the difference of the surperficial infrared temperature that records equipment enclosure 7 and this floor surface regional temperature greater than one the 3rd preset difference value when (as being 10 degree), regulate the air-supply wind speed and the air-supply cycle of described under-floor air distribution air-conditioning fan device, the described surperficial infrared temperature and the temperature difference between the described floor surface regional temperature of equipment enclosure 7 are adjusted to less than described the 3rd preset difference value, wherein concrete control method can be according to the size of two parts temperature difference, adopting stepping to regulate algorithm regulates, the application principle that this stepping is regulated algorithm can be not described in detail in this with reference to above-mentioned.
In addition, in the specific embodiment of the invention, described system also comprises:
The instrument temperature measuring equipment is used to measure the case surface temperature of described equipment enclosure 7 instrument of installing;
Electric current electric weight instrument is used to measure the power consumption of described equipment enclosure, as PDU electric current electric weight instrument;
Wherein, described control device 5 also is used for: when the difference of the case surface normal temperature (this temperature surface standard temperature with equipment enclosure usually is identical) of described case surface temperature and predefined described instrument during greater than one the 4th preset difference value, calculate the operate power of server in the described equipment enclosure and the expectation heat radiation power of this server according to described power consumption, thereby further regulate the air-supply wind speed of described under-floor air distribution air-conditioning fan device in advance, described case surface temperature is adjusted to approaches the case surface normal temperature.
In addition, described system can also comprise:
Chip efficient metering device is used to calculate the operational efficiency of described equipment enclosure server chip, and this chip efficiency calculation device includes SPEC (standard performance evaluation and test) or ENERGY STAR (Energy Star) server chip gauge.
And described control device also is used for: the operational efficiency of utilizing this chip efficient metering device to obtain, and calculate and estimate heat radiation power, and, regulate the air-supply wind speed and the air-supply cycle of described under-floor air distribution air-conditioning fan device in advance according to the expectation heat radiation power of described server.
Above-mentioned case surface temperature and the power consumption of equipment enclosure and the process of the air-supply wind speed of described under-floor air distribution air-conditioning fan device and air-supply cycle being regulated according to described equipment enclosure 7 instrument of installing according to the operational efficiency of described equipment enclosure server chip, be in air-supply wind speed and the air-supply cycle of regulating described under-floor air distribution air-conditioning fan device according to described IR temperature measuring device, make the stable operation of under-floor air distribution air-conditioning fan device can keep the surperficial infrared temperature of equipment enclosure in the machine room and keep approaching the adjustment process in advance of being carried out before the process of surface standard temperature, because described under-floor air distribution air-conditioning fan device moves to stable state and needs certain hour, make equipment enclosure can not obtain to cool off the problem of institute's required airflow in short-term in order to avoid.
By the above-mentioned blower fan apparatus of adjusting in advance air-supply wind speed and air-supply cycle, can make equipment enclosure in the unit interval, keep identical microenvironment parameter more stable.
The present invention also provides a kind of method of controlling under-floor air distribution air-conditioning fan device in the machine room on the other hand, consults the schematic flow sheet of the described method of Fig. 2, comprises step:
S201, the surperficial infrared temperature of equipment enclosure in the measurement machine room;
S202, whether the absolute value of difference of surface standard temperature of judging described surperficial infrared temperature and predefined described equipment enclosure greater than one first preset difference value, if judged result is not for, and execution in step S203 downwards then, if judged result is for being then downward execution in step S204;
S203, the air-supply wind speed of described under-floor air distribution air-conditioning fan device remains unchanged;
S204 regulates the air-supply wind speed and the air-supply cycle of described under-floor air distribution air-conditioning fan device, makes the described surperficial infrared temperature of described equipment enclosure be adjusted into described surface standard temperature;
S205 measure to measure on the plate face on ventilation floor in the machine room and the current differential pressure of plate face between down;
S206 judges described current differential pressure on the occasion of still negative value, if on the occasion of, execution in step S207 downwards then; If negative value, then downward execution in step S208;
S207 opens under-floor air distribution air-conditioning fan device;
Whether S208, the absolute value of judging difference between described current differential pressure and the preset standard pressure reduction greater than one second preset difference value, if judged result is for being, and execution in step S209 downwards then, if judged result is not for, then downward execution in step S210;
S209 regulates the unlatching number of described under-floor air distribution air-conditioning fan device, makes described current differential pressure be adjusted into described preset standard pressure reduction;
S210, the unlatching invariable number of described under-floor air distribution air-conditioning fan device;
S211 measures the floor surface regional temperature in the ventilation floor surface one preset height scope in the machine room;
S212, whether the difference of judging the described surperficial infrared temperature of described equipment enclosure and described floor surface regional temperature greater than one the 3rd preset difference value, if judged result is for being, execution in step S213 downwards then, if judged result is not for, then downward execution in step S214;
S213 regulates the air-supply wind speed and the air-supply cycle of described under-floor air distribution air-conditioning fan device, and the described surperficial infrared temperature of described equipment enclosure and the difference of described floor surface regional temperature are adjusted to less than described the 3rd preset difference value;
S214, the air-supply wind speed of described under-floor air distribution air-conditioning fan device remains unchanged.
In the described control machine room of above-mentioned Fig. 2 in the method for under-floor air distribution air-conditioning fan device, infrared temperature numerical value by monitoring equipment rack front surface, air-supply blast and the surface temperature of equipment enclosure and the temperature difference between the floor surface regional temperature at place, ventilation floor, utilize stepping algorithm or PID (differential) algorithm to calculate the field demand of this equipment enclosure, promptly calculate the air-supply wind speed and the air-supply cycle of under-floor air distribution air-conditioning fan device, which kind of adhesive order the blower fan gear shift relay of determining under-floor air distribution air-conditioning fan device adopts to satisfy the field demand of equipment enclosure, the surface temperature of equipment enclosure is remained approach the surface standard temperature value, and the air-flow blast that equipment enclosure sucked is held constant at the standard blast.
Comprehensively above-mentioned, adopt the described system and method for the specific embodiment of the invention, can be according to the load meterization of equipment enclosure in the machine room and the dynamic adjustments blower fan apparatus at the wind speed at ventilating board air outlet place, make the microenvironment parameter of equipment enclosure in the unit interval, fluctuate less and substantially constant.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. system that controls under-floor air distribution air-conditioning fan device in the machine room is characterized in that described system comprises:
IR temperature measuring device is used for the surperficial infrared temperature by equipment enclosure in the infrared rays survey machine room;
Control device, when being used for absolute value when the difference of the surface standard temperature of described surperficial infrared temperature and predefined described equipment enclosure greater than one first preset difference value, regulate the air-supply wind speed and the air-supply cycle of described under-floor air distribution air-conditioning fan device, make the described surperficial infrared temperature of described equipment enclosure be adjusted to described surface standard temperature.
2. the system as claimed in claim 1 is characterized in that, described system also comprises:
Minute-pressure difference measurements device is used to measure on the plate face on ventilation floor in the machine room and the current differential pressure of plate face between down;
Wherein said control device also is used for, when described current differential pressure be on the occasion of the time, control described under-floor air distribution air-conditioning fan device and open; And when described current differential pressure be negative value, and when the absolute value of difference is greater than one second preset difference value between described current differential pressure and the preset standard pressure reduction, regulate the unlatching number of described under-floor air distribution air-conditioning fan device, make described current differential pressure be adjusted into described preset standard pressure reduction.
3. system as claimed in claim 1 or 2 is characterized in that, described system also comprises:
The floor temperature measuring equipment is used to measure the floor surface regional temperature of ventilation floor surface in the machine room;
Wherein said control device also is used for, when the difference of the described surperficial infrared temperature of described equipment enclosure and described floor surface regional temperature during greater than one the 3rd preset difference value, regulate the air-supply wind speed and the air-supply cycle of described under-floor air distribution air-conditioning fan device, the described surperficial infrared temperature of described equipment enclosure and the difference of described floor surface regional temperature are adjusted to less than described the 3rd preset difference value.
4. system as claimed in claim 1 or 2 is characterized in that, described system also comprises:
The instrument temperature measuring equipment is used to measure the case surface temperature of the instrument of described equipment enclosure;
Electric current electric weight instrument is used to measure the power consumption of described equipment enclosure;
Wherein, described control device also is used for, when the difference of the case surface normal temperature of described case surface temperature and described instrument during, regulate the air-supply wind speed and the air-supply cycle of described under-floor air distribution air-conditioning fan device in advance according to described power consumption greater than one the 4th preset difference value.
5. system as claimed in claim 1 or 2 is characterized in that, described system also comprises:
Chip efficient metering device is used to calculate the operational efficiency of server chip in the described equipment enclosure;
Wherein, described control device also is used for according to described operational efficiency, calculates the expectation heat radiation power of described server chip, and regulates the air-supply wind speed and the air-supply cycle of described under-floor air distribution air-conditioning fan device in advance.
6. system as claimed in claim 1 or 2 is characterized in that, described IR temperature measuring device is installed on the air outlet place on described ventilation floor and/or is installed on the lifting scanning device at described machine room top.
7. system as claimed in claim 2 is characterized in that, described minute-pressure difference measurements device is installed on the wind-guiding impeller on described ventilation floor.
8. the system as claimed in claim 1 is characterized in that, air-supply wind speed and air-supply cycle that described control device adopts stepping algorithm or ratio, integration and differential pid algorithm to calculate described under-floor air distribution air-conditioning fan device.
9. method of controlling under-floor air distribution air-conditioning fan device in the machine room is characterized in that described method comprises:
Measure the surperficial infrared temperature of equipment enclosure in the machine room;
Whether the absolute value of difference of surface standard temperature of judging described surperficial infrared temperature and predefined described equipment enclosure greater than one first preset difference value, if judged result is not for, then the air-supply wind speed of described under-floor air distribution air-conditioning fan device remains unchanged; If judged result for being, is then regulated the air-supply wind speed and the air-supply cycle of described under-floor air distribution air-conditioning fan device, make the described surperficial infrared temperature of described equipment enclosure be adjusted into described surface standard temperature.
10. method as claimed in claim 9 is characterized in that, described judged result is when being, described method also further comprises:
Measure on the plate face on ventilation floor in the machine room and the current differential pressure of plate face between down;
Judge described current differential pressure on the occasion of still negative value, if on the occasion of, then control described under-floor air distribution air-conditioning fan device and open; If negative value, then further judge that whether the absolute value of difference between described current differential pressure and the preset standard pressure reduction is greater than one second preset difference value, if judged result is for being, then regulate the unlatching number of described under-floor air distribution air-conditioning fan device, making described current differential pressure be adjusted into described preset standard presses, if judged result then keeps the unlatching invariable number of described under-floor air distribution air-conditioning fan device for not.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910090313XA CN101634480B (en) | 2009-08-05 | 2009-08-05 | System and method for controlling under-floor air distribution air-conditioning fan device in machine room |
| PCT/CN2010/075675 WO2011015132A1 (en) | 2009-08-05 | 2010-08-03 | System and method for controlling blower device of underfloor air-distribution air-conditioner in machine room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910090313XA CN101634480B (en) | 2009-08-05 | 2009-08-05 | System and method for controlling under-floor air distribution air-conditioning fan device in machine room |
Publications (2)
| Publication Number | Publication Date |
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| CN101634480A true CN101634480A (en) | 2010-01-27 |
| CN101634480B CN101634480B (en) | 2011-12-14 |
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| CN200910090313XA Active CN101634480B (en) | 2009-08-05 | 2009-08-05 | System and method for controlling under-floor air distribution air-conditioning fan device in machine room |
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| CN (1) | CN101634480B (en) |
| WO (1) | WO2011015132A1 (en) |
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| JP2713660B2 (en) * | 1990-11-09 | 1998-02-16 | 三菱重工業株式会社 | Control method of air conditioner |
| JPH05196290A (en) * | 1992-01-23 | 1993-08-06 | Matsushita Electric Ind Co Ltd | Heating overload control device for air conditioner |
| JP2000283526A (en) * | 1999-03-25 | 2000-10-13 | Internatl Business Mach Corp <Ibm> | Air-conditioning system and method therefor |
| JP5061625B2 (en) * | 2007-01-31 | 2012-10-31 | パナソニック株式会社 | Ventilation equipment |
| JP4850224B2 (en) * | 2008-10-28 | 2012-01-11 | 株式会社Ｎｔｔファシリティーズ | Air conditioning system and operation method thereof |
| CN101634480B (en) * | 2009-08-05 | 2011-12-14 | 于郡东 | System and method for controlling under-floor air distribution air-conditioning fan device in machine room |
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Also Published As
| Publication number | Publication date |
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| CN101634480B (en) | 2011-12-14 |
| WO2011015132A1 (en) | 2011-02-10 |
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