WO2013029432A1 - Procédé et dispositif de dissipation de chaleur - Google Patents

Procédé et dispositif de dissipation de chaleur Download PDF

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Publication number
WO2013029432A1
WO2013029432A1 PCT/CN2012/078552 CN2012078552W WO2013029432A1 WO 2013029432 A1 WO2013029432 A1 WO 2013029432A1 CN 2012078552 W CN2012078552 W CN 2012078552W WO 2013029432 A1 WO2013029432 A1 WO 2013029432A1
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WO
WIPO (PCT)
Prior art keywords
temperature
fan
physical partition
speed
physical
Prior art date
Application number
PCT/CN2012/078552
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English (en)
Chinese (zh)
Inventor
吴俊�
朱寿礼
Original Assignee
中兴通讯股份有限公司
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Publication of WO2013029432A1 publication Critical patent/WO2013029432A1/fr

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/20—Cooling means
    • G06F1/206—Cooling means comprising thermal management
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
    • 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
    • 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
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Definitions

  • the invention relates to the technical field of heat dissipation of a high-power plug-in system, and in particular to a heat dissipation method and device. Background technique
  • the most commonly used heat dissipation methods include: The whole machine does not partition the heat method, and the method determines the fan speed by satisfying the heat dissipation requirement of the device with the highest heat dissipation requirement in the system.
  • the air volume of the fan exceeds the actual demand, thereby increasing the power consumption of the fan and increasing the power consumption. The noise of the fan.
  • Another common heat dissipation method is the heat dissipation partitioning method of the whole machine.
  • the fan speed is determined according to the temperature of the key nodes measured by different zones, that is, different fan speeds are used in different zones, thereby effectively reducing heat dissipation power and noise.
  • the isolation between the partitions is low in this method.
  • the heat dissipation effect of the partition is required, and in order to satisfy the heat dissipation effect of the partition with large wind resistance, it is necessary to increase the air volume of the fan, resulting in an increase in heat dissipation power and noise. Therefore, when the heat dissipation method of the prior art dissipates heat to the whole machine, in order to satisfy the effect of heat dissipation, there is a problem that the heat dissipation power of the fan is large and the noise is large.
  • the present invention provides a heat dissipation method and device for solving the problem of large heat dissipation power and large noise of the fan in order to satisfy the heat dissipation effect in the prior art.
  • a heat dissipation method comprising:
  • each physical partition is isolated by a single board, a tray or a dummy panel inserted into the backplane through the slot;
  • the method further includes:
  • the determining the rotational speed of each fan in the physical partition includes:
  • the method further includes:
  • each fan in the physical zone is adjusted to the maximum speed, and an ambient temperature over alarm is issued;
  • the current speed of the fan is obtained.
  • the current speed of the fan is equal to the predetermined fan speed, it is determined whether the temperature difference between the air inlet and the air outlet is less than the set number.
  • the method further includes:
  • the air outlet temperature When the air outlet temperature is readable, it is determined whether the tuyere temperature reaches a set fourth temperature threshold, and when the air outlet temperature reaches the set fourth temperature threshold, the speed of the fan in the physical partition is adjusted to the maximum speed.
  • the method further includes:
  • For each fan it is determined whether the current fan speed is less than the set speed threshold; when the current fan speed is less than the set speed threshold, the speeds of other fans in the physical zone are adjusted to the maximum speed.
  • each slot in the physical partition passes A single board, a tray, or a dummy panel inserted into the direct backplane is divided into corresponding physical sub-partitions.
  • the distance between the single board, the tray or the dummy panel from the fan in the physical partition is not more than 1/3 of the thickness of the fan.
  • a heat sink device comprising:
  • a monitoring module configured to monitor a temperature of a critical node in the physical partition for each isolated physical partition, wherein each physical partition is isolated by a single board, a tray or a dummy panel inserted into the backplane through the slot, and At least one slot is included in each physical partition;
  • a control module is configured to determine the speed of each fan in the physical partition according to the temperature of the key nodes in the monitored physical partition.
  • the monitoring module is further configured to monitor a temperature of the air inlet in the physical partition and a temperature of the air outlet;
  • the control module is further configured to determine the rotation speed of each fan in the physical partition according to the temperature of the key node in the monitored physical partition, the temperature of the air inlet, and the temperature of the air outlet.
  • the control module is further configured to determine whether the temperature of the monitored air inlet is greater than a set first temperature threshold; when the temperature of the air inlet is greater than a set first temperature threshold, each of the physical partitions The fan is adjusted to the maximum speed and the ambient temperature is too high. When the temperature of the air inlet is not greater than the set first temperature threshold, the current speed of the fan is obtained. When the current speed of the fan is equal to the predetermined fan speed, it is determined.
  • each fan in the physical partition is adjusted to the maximum Rotating speed, and issuing an airway abnormality alarm; when the temperature values of the air inlet and the air outlet are not less than the set second temperature threshold, determining whether the temperature of each key node in the physical partition is greater than a set third temperature threshold; When the temperature of at least one of the critical nodes in the physical partition is greater than the set third temperature threshold, the speed of each fan in the physical partition is increased; When the temperature of each critical node of the physical partition greater than the third temperature threshold value is not set, the rotation speed of each fan maintaining constant physical partition.
  • the control module is further configured to determine whether the temperature of the air inlet is readable; when the temperature of the air inlet is unreadable, determine whether the speed of each fan in the current physical partition reaches a maximum speed, when in the physical partition When the maximum speed of each fan does not reach the maximum speed, it is judged whether the temperature of the tuyere is readable. When the temperature of the air outlet is unreadable, it is judged whether the temperature of the key node of the physical partition is readable. When the temperature of the key node is unreadable, The speed of the fan in the physical partition is adjusted to the maximum speed. When the air outlet temperature is readable, it is determined whether the tuyere temperature reaches the set fourth temperature threshold. When the outlet temperature reaches the set fourth temperature threshold, the physical partition is determined. The speed of the inner fan is adjusted to the maximum speed.
  • the control module is further configured to obtain a current speed of each fan in the physical partition; for each fan, determine whether the current fan speed is less than a set speed threshold; when the current fan speed is less than the set fan speed At the threshold, the speed of the other fans in the physical partition is adjusted to the maximum speed.
  • the heat dissipation method and device provided by the present invention monitors the temperature of a key node in the physical partition in a physical partition separated by a single board, a tray or a dummy panel that is inserted into the backplane through the slot, according to the monitored physical
  • the temperature of the critical node in the zone determines the speed of the fan in the physical zone.
  • each slot is divided into the isolated physical partition by a single board, a tray or a dummy panel, and the single board, the tray or the dummy panel is directly connected to the back board, so that each can be guaranteed
  • the independence between physical partitions avoids mutual interference between different physical partitions, ensuring the accuracy of fan speed, avoiding waste of fan power, and reducing fan noise.
  • FIG. 1 is a schematic diagram of a heat dissipation process provided by the present invention.
  • FIG. 2 is a schematic structural diagram of each physical partition that is isolated according to the present invention
  • FIG. 3 is a detailed process of heat dissipation provided by the present invention
  • FIG. 4 is a process for accurately controlling a fan speed during a heat dissipation process provided by the present invention
  • FIG. 5 is a process of abnormal processing in a heat dissipation process provided by the present invention
  • FIG. 6 is a schematic structural view of a heat dissipating device provided by the present invention. detailed description
  • the invention provides a heat dissipation method and device for reducing the heat dissipation efficiency of the fan and reducing the noise of the fan.
  • FIG. 1 is a schematic diagram of a heat dissipation process provided by the present invention, the process comprising the following steps:
  • S101 Monitor, for each isolated physical partition, a temperature of a critical node in the physical partition, where each physical partition is isolated by a board, a tray, or a dummy panel inserted into the backplane through the slot, and each The physical partition includes at least one slot.
  • FIG. 2 is a schematic structural diagram of each physical partition that is isolated according to the present invention.
  • Each two physical partitions are separated by a structure such as a single board, a tray, or a dummy panel to facilitate partition isolation.
  • a structure that facilitates partition isolation such as a single board, a tray, or a dummy panel, is inserted into the slot. Isolate each two physical partitions.
  • the depth of the isolated single board, tray or dummy panel is directly to the backplane of the chassis.
  • the fan is located at one end of each physical partition.
  • the veneer, tray or dummy panel should be as close as possible to the fan in the present invention.
  • the distance between the veneer, the tray or the dummy panel from the fan in the physical partition is not more than 1/3 of the thickness of the fan, and the closer the distance, the better.
  • S102 Determine, according to the monitored temperature of the critical node in the physical partition, the rotation speed of each fan in the physical partition.
  • each physical partition fan When determining the speed of each physical partition fan, it is necessary to monitor the temperature of the key nodes in the physical partition, and determine the speed of each fan in the physical partition according to the monitored temperature of the critical node. If the power of the board is not in the physical partition, the board in the physical partition is not in the position or the temperature of the key node of the board is low. You can reduce the speed of the fan or turn off the fan. A fan inside the physical partition.
  • each physical partition includes at least one slot
  • the physical partition includes more than two slots, in order to avoid mutual interference of airflow between the slots
  • the physical partition is adopted in the present invention.
  • Each slot is divided into corresponding physical sub-partitions by a single board, a tray, or a dummy panel inserted into the backplane. That is, each physical sub-partition corresponds to one slot, so that mutual interference of air volume between the slots can be avoided, which is more conducive to heat dissipation of the chassis.
  • each slot is divided into the isolated physical partition by a single board, a tray or a dummy panel, and the single board, the tray or the dummy panel is directly connected to the back board, so that each can be guaranteed
  • the independence between physical partitions avoids mutual interference between different physical partitions, ensuring the accuracy of fan speed, avoiding waste of fan power, and reducing fan noise.
  • the rotational speed of the fan is the rotational speed that provides the minimum air volume.
  • the ambient temperature may also be considered according to the environment.
  • the temperature and the temperature of the critical nodes in the monitored physical zone determine the speed of the fan.
  • a temperature sensor may be separately disposed at each end of each physical partition for monitoring the temperature of the air inlet in the physical partition, that is, the temperature of the fan just blowing out the wind, and monitoring the physical partition air outlet. The temperature, that is, the temperature after the wind blown by the fan passes through the physical partition.
  • a redundant design is adopted, that is, in the present invention, for each physical partition, the current rotational speed of each fan in the physical partition is obtained, for each fan. And determining whether the current speed of the fan is less than a set speed threshold, and when the current speed of the fan is less than a set speed threshold, the physical partition is The speed of his fan is adjusted to the maximum speed. In the present invention, it is determined whether each fan is turned by determining whether the obtained current speed of the fan is less than a set speed threshold. When the current fan speed is less than the set speed threshold, the fan is considered to be turned, in order to To meet the cooling requirements of the devices in the physical partition, adjust the speed of other fans in the physical partition to the maximum speed.
  • the speed threshold may be a specific speed value or a percentage.
  • the speed threshold is a percentage, after the current fan speed is obtained, the ratio of the current fan speed to the designed maximum speed of the fan is determined, and the ratio is compared with the speed. The percentage corresponding to the threshold is compared to determine whether to adjust the speed of the other fans to the maximum speed.
  • the fan is generally considered to be stalled when the obtained fan speed is less than half of the predetermined fan speed.
  • FIG. 3 is a detailed process of heat dissipation provided by the present invention, and the process includes the following steps:
  • S301 Monitor, for each isolated physical partition, a temperature of a critical node in the physical partition, where each physical partition is isolated by a board, a tray, or a dummy panel inserted into the backplane through the slot, and each The physical partition includes at least one slot.
  • S302 Monitor the temperature of the air inlet of the physical partition and the temperature of the air outlet.
  • S303 Determine, according to the monitored temperature of the key node in the physical partition, the temperature of the air inlet, and the temperature of the air outlet, determine the rotation speed of each fan in the physical partition.
  • step S305 Determine, for each fan, whether the current rotation speed of the fan is less than a set speed threshold. If the determination result is yes, proceed to step S306; otherwise, proceed to step S307.
  • the speed of the physical partition fan can be accurately controlled to achieve the purpose of accurately adjusting the physical partition temperature. For example, according to the temperature of the air inlet and the temperature of the air outlet, determine whether the air duct is blocked, when it is determined that the air duct is blocked, A wind channel abnormality alarm is issued. Since the fan speed regulation strategy adopted by the present invention is simple and efficient, and the abnormality of the air duct blockage can be found, the granularity of the fan alarm is finer.
  • the process obtains the temperature of the air inlet, the temperature of the air outlet, and the temperature of the key node, and determines the fan speed after the fan speed is determined. Further precise control of the process, the process includes the following steps:
  • step S401 Determine, according to the monitored temperature of the air inlet, whether the temperature of the monitored air inlet is greater than a set first temperature threshold. When the determination result is yes, proceed to step S402; otherwise, proceed to step S403.
  • S402 Adjust each fan in the physical partition to the maximum speed and issue an alarm that the ambient temperature is too high.
  • the current speed of the fan is the same.
  • the current fan speed is considered to be the same as the predetermined fan speed.
  • step S405 Determine whether the temperature of each critical node in the physical partition is greater than a set third temperature threshold. When the temperature of at least one critical node in the physical partition is greater than a set third temperature threshold, proceed to step S406, when the physical partition is performed. When the temperature of each of the critical nodes is not greater than the set third temperature threshold, step S407 is performed.
  • S406 Increase the rotational speed of each fan in the physical partition.
  • S407 Keep the rotation speed of each fan in the physical partition unchanged.
  • the rotational speed of each fan in the physical partition is determined according to the set first time interval, so as to ensure timely heat dissipation of the devices in the physical partition, and the loss of the fan can be reduced.
  • the first time interval for determining the fan speed for each physical partition may be the same or different.
  • the speed of the fan in the physical partition when the speed of the fan in the physical partition is accurately adjusted, it may also be performed according to a set time period. After determining the speed of the fan in a first time interval, The speed of the fan is precisely adjusted multiple times during the first time interval, that is, the time period during which the fan speed is accurately adjusted may be the same as or different from the first time interval.
  • the abnormal processing process is also included in the present invention, and the specific abnormal processing process
  • the method includes: determining whether the temperature of the air inlet is readable; when the temperature of the air inlet is unreadable, determining whether the speed of each fan in the physical partition reaches a maximum speed, when the speed of each fan in the physical partition is not When the maximum speed is reached, it is judged whether the temperature of the tuyere is readable; when the temperature of the air outlet is unreadable, it is judged whether the temperature of the key node of the physical partition is readable, and when the temperature of the key node is unreadable, the fan of the physical partition is The speed is adjusted to the maximum speed.
  • the outlet temperature is readable, it is determined whether the tuyere temperature reaches the set fourth temperature threshold.
  • the fan of the physical partition is adjusted to the maximum speed.
  • FIG. 5 is a process of abnormal processing in a heat dissipation process provided by the present invention, and the process includes the following steps:
  • step S501 determining whether the temperature of the air inlet is readable, and if the determination result is no, proceeding to step S502; otherwise, proceeding to step S503.
  • step S502 determining whether the current speed of each fan in the physical partition reaches the maximum speed, when When the rotational speed of each fan in the physical partition reaches the maximum rotational speed, step S508 is performed; otherwise, step S503 is performed.
  • step S503 It is determined whether the temperature of the tuyere is readable. When the determination result is yes, step S504 is performed, and when the determination result is no, step S505 is performed.
  • step S504 It is determined whether the tuyere temperature reaches the set fourth temperature threshold. When the determination result is no, the process proceeds to step S506. If the determination result is yes, the process proceeds to step S507.
  • step S505 Determine whether the speed of each fan in the physical partition reaches the maximum speed. When the speed of each fan in the physical partition reaches the maximum speed, proceed to step S508; otherwise, proceed to step S506.
  • step S506 Determine whether the temperature of the key node of the physical partition is readable. When the determination result is yes, proceed to step S508; otherwise, proceed to step S507.
  • the temperature in the physical partition can be prevented from being monitored and the heat dissipation of the device is affected.
  • FIG. 6 is a schematic structural diagram of a heat dissipating device provided by the present invention, the device comprising:
  • the monitoring module 61 is configured to monitor the temperature of the key nodes in the physical partition for each isolated physical partition, where each physical partition is isolated by a single board, a tray or a dummy panel inserted into the backplane through the slot And each physical partition includes at least one slot;
  • the control module 62 is configured to determine the rotation speed of each fan of the physical partition according to the monitored temperature of the key node in the physical partition.
  • each slot in the physical partition is divided into corresponding physical sub-partitions by a board, a tray, or a filler panel that is inserted into the backplane.
  • the monitoring module 61 is further configured to monitor a temperature of the air inlet in the physical partition and a temperature of the air outlet;
  • the control module 62 is further configured to determine, according to the monitored temperature of the key node in the physical partition, the temperature of the air inlet, and the temperature of the air outlet, the rotation speed of each fan of the physical partition.
  • the control module 62 is further configured to determine whether the temperature of the monitored air inlet is greater than a set first temperature threshold; and when the temperature of the air inlet is greater than a set first temperature threshold, each of the physical partitions The fan is adjusted to the maximum speed and the ambient temperature is too high. When the temperature of the air inlet is not greater than the set first temperature threshold, the current speed of the fan is obtained. When the current speed of the fan is equal to the predetermined fan speed, it is determined.
  • each fan in the physical partition is adjusted to the maximum Rotating speed, and issuing an airway abnormality alarm; when the temperature values of the air inlet and the air outlet are not less than the set second temperature threshold, determining whether the temperature of each key node in the physical partition is greater than a set third temperature threshold; When the temperature of at least one of the critical nodes in the physical partition is greater than a set third temperature threshold, then each fan in the physical partition is increased Speed; when the temperature of the critical nodes of each physical partition not greater than the third temperature threshold is set, the rotation speed of each fan maintaining the same physical partition.
  • the control module 62 is further configured to determine whether the temperature of the air inlet is readable; when the temperature of the air inlet is unreadable, determine whether the current speed of each fan in the physical partition reaches a maximum speed, when the physical partition When the speed of each fan does not reach the maximum speed, it is judged whether the temperature of the tuyere is readable; when the temperature of the air outlet is unreadable, it is judged whether the temperature of the key node of the physical partition is readable, when the temperature of the key node is unreadable, Adjusting the speed of the fan in the physical partition to the maximum speed.
  • the air outlet temperature is readable, determining whether the tuyere temperature reaches the set fourth temperature threshold, when the air outlet temperature reaches the set fourth temperature threshold, Adjust the speed of the fan in the physical partition to the maximum speed.
  • the control module 62 is further configured to obtain a speed of each fan in the physical partition; for each fan, determine whether the current speed of the fan is less than a set speed threshold; when the current speed of the fan is less than a set The fan speed threshold, the speed of other fans in the physical partition Adjust to the maximum speed.
  • the heat dissipation method and device provided by the present invention monitors the temperature of a key node in the physical partition in a physical partition separated by a single board, a tray or a dummy panel that is inserted into the backplane through the slot, according to the monitored physical
  • the temperature of the critical node in the zone determines the speed of the fan in the physical zone.
  • each slot is divided into the isolated physical partition by a single board, a tray or a dummy panel, and the single board, the tray or the dummy panel is directly connected to the back board, so that each can be guaranteed
  • the independence between physical partitions avoids mutual interference between different physical partitions, ensuring the accuracy of fan speed, avoiding waste of fan power, and reducing fan noise.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)

Abstract

La présente invention concerne un procédé de dissipation de chaleur comprenant : dans chaque cloison physique isolée par insertion d'une planche, d'une palette ou d'un panneau factice, etc. directement sur une planche arrière dans une position de fente, la température des nœuds clés dans la cloison physique est surveillée ; et la vitesse de rotation du ventilateur dans la cloison physique est déterminée en fonction de la température surveillée des nœuds clés dans la cloison physique. Un dispositif de dissipation de chaleur comprend un module de surveillance et un module de commande. Le module de surveillance est conçu pour surveiller la température des nœuds clés dans la cloison physique pour chaque cloison physique isolée, chaque cloison physique comprenant au moins une position de fente. Le module de commande est conçu pour déterminer la vitesse de rotation de chaque ventilateur dans la cloison physique en fonction de la température surveillée des nœuds clés dans la cloison physique. A l'intérieur du cadre, chaque position de fente est divisée en cloison physique isolée par la planche, la palette ou le panneau factice, etc., et la planche, la palette ou le panneau factice, etc. directement sur la planche arrière. Par conséquent, l'indépendance entre chaque cloison physique est garantie, l'interférence mutuelle entre différentes cloisons physiques est évitée et la précision de la vitesse de rotation déterminée du ventilateur est garantie, ce qui permet d'éviter un gaspillage de puissance de ventilateur et de diminuer le bruit du ventilateur.
PCT/CN2012/078552 2011-08-29 2012-07-12 Procédé et dispositif de dissipation de chaleur WO2013029432A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110251238.8 2011-08-29
CN201110251238.8A CN102307447B (zh) 2011-08-29 2011-08-29 一种散热方法及装置

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