System and method for louver-integrated directional airflow fans

Patent metadata

Field	Value
Publication number	US-2022201900-A1
Application number	US-202017126086-A
Country	US
Kind code	A1
Filing date	Dec 18, 2020
Priority date	Dec 18, 2020
Publication date	Jun 23, 2022
Grant date	—

Abstract

A cooling system for a plurality of heat-generating components in a chassis of an information handling system includes an array of fans, each fan operable to generate an airflow in a range of airflows, and a control system configured to monitor temperatures for the components and adjust a direction of one or more airflows based on the component temperatures. If a component temperature gets too high for a first fan associated with the component to cool the component, a portion of a second airflow generated by a second fan may be directed to provide additional airflow to the component such that the component is cooled without increasing the fan speed of the first fan. Adjacent fan speeds may also be adjusted to reduce losses due to differences between adjacent airflows.

First claim

What is claimed is:

1 . A computer-implemented method for cooling a chassis of an information handling system, the method comprising:
determining a temperature of a first heat-generating component cooled by a first fan of an array of fans is greater than a first component temperature threshold; determining a temperature of a second heat-generating component near the first heat-generating component is less than a second component temperature threshold, wherein the second heat-generating component is cooled by a second fan of the array of fans; determining a first airflow generated by the first fan; determining a second airflow generated by the second fan; and adjusting a louver associated with the second airflow to direct at least a portion of the second airflow to the first heat-generating component based on the first component temperature, the second component temperature, the first fan speed and the second fan speed.

2 . The computer-implemented method of claim 1 , wherein:
the louver comprises a plurality of slats; and adjusting the louver comprises adjusting an angle of the plurality of slats corresponding to the at least portion of the second airflow.

3 . The computer-implemented method of claim 2 , wherein adjusting the angle of the plurality of slats comprises sending a signal to an actuator associated with the plurality of slats, wherein a first signal causes the actuator to orient the plurality of slats at a first angle to direct the at least portion of the second airflow to the second heat-generating component and a second signal causes the actuator to orient the plurality of slats at a second angle to direct the at least portion of the second airflow to the first heat-generating component.

4 . The computer-implemented method of claim 3 , wherein:
the plurality of slats form part of a rotatable section and are configured to bias the rotatable section to rotate in the second airflow; and adjusting the angle of the plurality of slats comprises:
determining a first angular position of the rotatable section;
determining a second angular position of the rotatable section associated with directing the at least portion of the second airflow to the first heat-generating component;
sending a first signal to an actuator, the first signal causing the actuator to disengage the rotatable section to allow the rotatable section to rotate to the second angular position; and
sending a second signal to the actuator, the second signal causing the actuator to engage the rotatable section to maintain the rotatable section at the second angular position.

5 . The computer-implemented method of claim 1 , wherein:
determining a temperature of a second heat-generating component near the first heat-generating component is less than a second component temperature threshold comprises determining if a difference between the second component temperature and the second component temperature threshold is greater than a minimum difference; if the difference between the second component temperature and the second component temperature threshold is greater than the minimum difference, adjusting the direction of the at least portion of the second airflow to the first heat-generating component; and if the difference between the second component temperature and the second component temperature threshold is less than the minimum difference, increasing a fan speed of one or more of the first fan and the second fan.

6 . The computer-implemented method of claim 5 , wherein increasing a fan speed of one or more of the first fan and the second fan comprises:
communicating with the first fan to increase the first fan speed based on the first component temperature; and communicating with the second fan to increase the second fan speed based on one or more of the difference between the second component temperature and the second component temperature threshold being less than the minimum difference and an airflow differential between the first airflow and the second airflow being less than an airflow differential threshold.

7 . A cooling system for a plurality of heat-generating components in a chassis of an information handling system, the cooling system comprising:
an array of fans for cooling the plurality of heat-generating components, each fan of the array of fans configurable to operate at a fan speed in a range of fan speeds to generate an airflow based on the fan speed; a plurality of louvers, each louver corresponding to a fan of the array of fans; a plurality of sensors; and a baseboard management controller (BMC) comprising:
a processor; and
a memory medium storing a set of instructions executable by the processor to:
communicate with the plurality of sensors to receive temperature signals associated with the plurality of heat-generating components;
determine a first component temperature of a first heat-generating component of the plurality of heat-generating components is greater than a first component temperature threshold;
determine a second component temperature of a second heat-generating component of the plurality of heat-generating components is less than a second component temperature threshold;
determine a first fan speed of a first fan of the array of fans, the first fan generating a first airflow directed toward the first heat-generating component;
determine a second fan speed of a second fan of the array of fans, the second fan generating a second airflow directed toward the second heat-generating component; and
adjust a louver of the plurality of louvers to direct at least a portion of the second airflow to the first heat-generating component based on the first component temperature, the second component temperature, the first fan speed and the second fan speed.

8 . The cooling system of claim 7 , wherein each louver comprises:
a plurality of sections, each section comprising a plurality of slats; and an actuator for changing an angle of the plurality of slats in each section, wherein the BMC is configured to send a signal to the actuator to adjust the plurality of slats to direct the at least portion of the second airflow to the first heat-generating component.

9 . The cooling system of claim 8 , wherein:
the plurality of slats have a fixed angle and form part of a rotatable section, wherein the fixed angle causes the rotatable section to rotate in the second airflow, wherein an angular position of the rotatable section determines a direction of the second airflow; the actuator is configurable in a first position to disengage the rotatable section to allow rotation of the rotatable section and configurable in a second position to engage the rotatable section to prevent rotation of the rotatable section; and the BMC is configured to:
determine a first angular position of the rotatable section;
determine a second angular position of the rotatable section associated with directing the second airflow to the first heat-generating component;
send a first signal to configure the actuator in the first position to allow the second airflow to rotate the rotatable section to the second angular position; and
send a second signal to configure the actuator in the second position to maintain the rotatable section at the second angular position.

10 . The cooling system of claim 8 , wherein:
the plurality of slats have an adjustable angle; the actuator is configurable to adjust the angle of the plurality of slats; and
the BMC is configured to:
send a first signal to the actuator to adjust the angle of the plurality of slats in a first section to direct the at least portion of the second airflow to the first heat-generating component; and
send a second signal to th

Assignees

• Dell Products Lp

Inventors

• Ma Xinzhi
• Tunks Eric Michael

Classifications

• H05K7/20727 Primary

  within server blades for removing heat from heat source · CPC title

• H05K7/20181

  Filters; Louvers · CPC title

• H05K7/20836

  Thermal management, e.g. server temperature control · CPC title

• H05K7/20736 Primary

  within cabinets for removing heat from server blades · CPC title