GB2354066A - Cabinet for units which dissipate heat - Google Patents

Cabinet for units which dissipate heat Download PDF

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Publication number
GB2354066A
GB2354066A GB9921094A GB9921094A GB2354066A GB 2354066 A GB2354066 A GB 2354066A GB 9921094 A GB9921094 A GB 9921094A GB 9921094 A GB9921094 A GB 9921094A GB 2354066 A GB2354066 A GB 2354066A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
cabinet
units
air
plenum chamber
fan unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB9921094A
Other versions
GB9921094D0 (en )
GB2354066B (en )
Inventor
Simon John Kerslake
Graham Spencer Bestwick
Philip Leslie Eden
William George Gates
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia of America Corp
Original Assignee
Nokia of America Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20536Modifications to facilitate cooling, ventilating, or heating for racks or cabinets of standardized dimensions, e.g. 19-inch electronic racks
    • H05K7/20554Forced ventilation of a gaseous coolant
    • H05K7/20572Forced ventilation of a gaseous coolant within cabinets for removing heat from sub-racks, e.g. plenum

Abstract

A cabinet 2 is disclosed for a plurality of units 6 which dissipate heat. The cabinet 2 has a plenum chamber 12, a rack 4 for mounting the units allowing passages for cooling air past the units, and a fan unit 14 for propelling air to flow from outside the cabinet through the passages into the plenum chamber and through an exhaust from the plenum chamber. The fan unit has a backwardly curved impeller 16 mounted for driven rotation about an axis and an outlet passage 20 arranged to direct out-flowing air generally parallel to the axis. The fan unit 14 may be mounted in the top of the cabinet so as to direct out-flowing air upwardly. The cabinet 2 may have a passage containing a filter through which the air is drawn into the cabinet 2.

Description

2354066 CABINET FOR UNITS WHICH DISSIPATE HEAT This invention relates to

cabinets for units which dissipate heat.

The background to the invention will be described with reference to a particular application. The invention is not limited to this application and others will occur readily to 5 the reader.

Electronic equipment is often manufactured in units intended to be mounted in racks. Each unit dissipates heat and may require cooling. One method of cooling is to provide each unit with its own cooling fan. The invention is based on a proposal to construct the rack as a cabinet and to draw air into the cabinet over all the units so cooling them all together. Designing a cabinet uncovers a conflict. The cabinet has to be dimensioned to fit existing equipment rooms, i.e. its dimensions are desired to be conventional. In the cabinet it is desired to place as many units as possible, so they will be as close together as possible commensurate with leaving passages for cooling air to circulate between them. Narrower passages also lead to higher air speed which improves cooling. However, narrower passages also lead to greater resistance to air flow and thus to larger fans which reduces the amount of interior space available for the u n its.

Against this background, there is provided a cabinet for a plurality of units which dissipate heat, the cabinet having a plenum chamber, means for mounting the units allowing passages for cooling air past the units, and a fan unit for propelling air to flow from outside the cabinet through the passages into the plenum chamber and through an exhaust from the plenum chamber, said fan unit having a backwardly curved impeller mounted for driven rotation about an axis and an outlet passage arranged to direct outflowing air generally parallel to the axis. The provision of a fan unit having backwardly a curved impeller, dramatically increases the potential working pressure difference across a fan unit of given dimensions, compared with an axial fan, which allows maximum internal space to be allocated to the heat dissipating units.

Preferably, the fan unit is mounted in the top of the cabinet so as to direct outflowing air upwardly.

The invention has even greater advantage when, as in a preferred embodiment, air is drawn into the cabinet through a filter, since this increases the resistance to flow and 5 thus the load on the fan unit.

In a preferred arrangement, the cabinet has a door in which the passage is located and the plenum chamber is located behind the units remote from the door.

One embodiment of the invention will now be described, by way of example, with reference to the accompanying drawings, in which:

Figure 1 is a schematic cross section of a cabinet embodying the invention; Figure 2 is a scrap front view of two units contained by the cabinets, showing an air passage between them; and Figure 3 is a pictorial view of the fan unit with its cover removed.

Referring to the drawings, the cabinet 2 has an internal rack 4 for electronic units 6, e.g. radio units, antenna coupling equipment, power distribution equipment, central processing electronics etc. The units are mounted side by side in the rack as illustrated in Figure 2. The units 6 dissipate heat and some or all have extended external surfaces, or fins, 8 to assist cooling as air circulates through narrow passages 10 between them.

Behind the rack 4 is a plenum chamber 12 at the upper end of which a fan unit 14 is located. In order to remain desirably small whilst being able to draw sufficient air through the narrow pass6ges 10, the fan unit has a backwardly curved impeller 16 which is driven by an electric motor 18 to rotate about an axis 19. From the nature of a backwardly curved impellor, air is drawn axially into the impeller from the plenum chamber 12 and is driven radially outwardly by the rotating impeller. It is desired that the exhaust air should flow generally upwardly parallel to the axis 19 and to this end the fan unit has an outlet passage 20 defined by a baffle 22 which deflects air generally vertically. A further baffle 24 deflects outwardly flowing air forwardly towards the outlet passage 20.

The cabinet is closed and sealed by a door 26 so that the only inlet for air into it is through a filter, shown schematically at 28, mounted in the door. This further restricts the airflow increasing the load on the fan unit and making the need for the backwardly curved impeller greater.

Claims (4)

1 A cabinet for a plurality of units which dissipate heat, the cabinet having a plenum chamber, means for mounting the units allowing passages for cooling air past the units, and a fan unit for propelling air to flow from outside the cabinet through the passages into the plenum chamber and through an exhaust from the plenum chamber, said fan unit having a backwardly curved impeller mounted for driven rotation about an axis and an outlet passage arranged to direct out-flowing air generally parallel to the axis.
2. A cabinet as claimed in claim 1, wherein the fan unit is mounted in the top 10 of the cabinet so as to direct out-flowing air upwardly.
3. A cabinet as claimed in claim 1 or 2, including a passage containing a filter through which the air is drawn into the cabinet.
4. A cabinet as claimed in claim 3, wherein the cabinet has a door in which the passage is located and the plenum chamber is located behind the units remote from the door.
t
GB9921094A 1999-09-07 1999-09-07 Cabinet for units which dissipate heat Expired - Fee Related GB2354066B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9921094A GB2354066B (en) 1999-09-07 1999-09-07 Cabinet for units which dissipate heat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9921094A GB2354066B (en) 1999-09-07 1999-09-07 Cabinet for units which dissipate heat

Publications (3)

Publication Number Publication Date
GB9921094D0 GB9921094D0 (en) 1999-11-10
GB2354066A true true GB2354066A (en) 2001-03-14
GB2354066B GB2354066B (en) 2001-07-18

Family

ID=10860481

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9921094A Expired - Fee Related GB2354066B (en) 1999-09-07 1999-09-07 Cabinet for units which dissipate heat

Country Status (1)

Country Link
GB (1) GB2354066B (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002101528A2 (en) * 2001-06-12 2002-12-19 Fujitsu Siemens Computers Gmbh Computer cupboard and arrangement of a computer cupboard
FR2831019A1 (en) * 2001-10-12 2003-04-18 Legrand Sa Transmission/processing digital words electrical cupboards for refrigerator having cupboard with inner smaller dimension compartments leaving air channel duct intermediate area and air flowing inlet mouth/through compartments/outlet mouth
WO2005081607A1 (en) 2004-02-17 2005-09-01 American Power Conversion Corporation Rack enclosure
US7525799B2 (en) * 2006-12-22 2009-04-28 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. Cabinet for electronic devices
US7752858B2 (en) 2002-11-25 2010-07-13 American Power Conversion Corporation Exhaust air removal system
US7862410B2 (en) 2006-01-20 2011-01-04 American Power Conversion Corporation Air removal unit
US7894190B2 (en) 2009-01-05 2011-02-22 Chatsworth Products, Inc. Electronic equipment enclosure with side-to-side airflow control system
WO2011033270A2 (en) 2009-09-21 2011-03-24 4Energy Limited Equipment cabinet
US7952869B2 (en) * 2005-09-19 2011-05-31 Chatsworth Products, Inc. Air diverter for directing air upwardly in an equipment enclosure
US8040673B2 (en) 2008-09-08 2011-10-18 Chatsworth Products, Inc. Ducted exhaust equipment enclosure
US8087979B2 (en) 2003-05-13 2012-01-03 American Power Conversion Corporation Rack enclosure
US8107238B2 (en) 2005-09-19 2012-01-31 Chatsworth Products, Inc. Ducted exhaust equipment enclosure
US8257155B2 (en) 2006-01-20 2012-09-04 Chatsworth Products, Inc. Selectively routing air within an electronic equipment enclosure
US8653363B2 (en) 2010-06-01 2014-02-18 Chatsworth Products, Inc. Magnetic filler panel for use in airflow control system in electronic equipment enclosure
US9313927B2 (en) 2010-11-08 2016-04-12 Chatsworth Products, Inc. Header panel assembly for preventing air circulation above electronic equipment enclosure
US9585266B2 (en) 2010-11-08 2017-02-28 Chatsworth Products, Inc. Header panel assembly for preventing air circulation above electronic equipment enclosure
US9655259B2 (en) 2011-12-09 2017-05-16 Chatsworth Products, Inc. Data processing equipment structure
US9955616B2 (en) 2010-11-08 2018-04-24 Chatsworth Products, Inc. Header panel assembly for preventing air circulation above electronic equipment enclosure
US9952103B2 (en) 2011-12-22 2018-04-24 Schneider Electric It Corporation Analysis of effect of transient events on temperature in a data center

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3829250A (en) * 1971-09-22 1974-08-13 Torin Corp Blower assembly
WO1988001127A1 (en) * 1986-08-07 1988-02-11 Ncr Corporation An electronic equipment enclosure
US4917572A (en) * 1988-05-23 1990-04-17 Airflow Research And Manufacturing Corporation Centrifugal blower with axial clearance
GB2293279A (en) * 1994-09-14 1996-03-20 Questech Ltd Housings for electronic equipment
EP0741246A1 (en) * 1995-05-05 1996-11-06 Alcatel SEL Aktiengesellschaft Radial blower
US5751549A (en) * 1996-06-26 1998-05-12 Sun Microsystems, Inc. Hard disk drive assembly which has a plenum chamber and a fan assembly that is perpendicular to a rack chamber

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3829250A (en) * 1971-09-22 1974-08-13 Torin Corp Blower assembly
WO1988001127A1 (en) * 1986-08-07 1988-02-11 Ncr Corporation An electronic equipment enclosure
US4917572A (en) * 1988-05-23 1990-04-17 Airflow Research And Manufacturing Corporation Centrifugal blower with axial clearance
GB2293279A (en) * 1994-09-14 1996-03-20 Questech Ltd Housings for electronic equipment
EP0741246A1 (en) * 1995-05-05 1996-11-06 Alcatel SEL Aktiengesellschaft Radial blower
US5751549A (en) * 1996-06-26 1998-05-12 Sun Microsystems, Inc. Hard disk drive assembly which has a plenum chamber and a fan assembly that is perpendicular to a rack chamber

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002101528A3 (en) * 2001-06-12 2003-10-30 Fujitsu Siemens Computers Gmbh Computer cupboard and arrangement of a computer cupboard
WO2002101528A2 (en) * 2001-06-12 2002-12-19 Fujitsu Siemens Computers Gmbh Computer cupboard and arrangement of a computer cupboard
FR2831019A1 (en) * 2001-10-12 2003-04-18 Legrand Sa Transmission/processing digital words electrical cupboards for refrigerator having cupboard with inner smaller dimension compartments leaving air channel duct intermediate area and air flowing inlet mouth/through compartments/outlet mouth
US7752858B2 (en) 2002-11-25 2010-07-13 American Power Conversion Corporation Exhaust air removal system
US8544289B2 (en) 2002-11-25 2013-10-01 Schneider Electric It Corporation Exhaust air removal system
US7878888B2 (en) 2003-05-13 2011-02-01 American Power Conversion Corporation Rack enclosure
US8087979B2 (en) 2003-05-13 2012-01-03 American Power Conversion Corporation Rack enclosure
WO2005081607A1 (en) 2004-02-17 2005-09-01 American Power Conversion Corporation Rack enclosure
CN100488346C (en) 2004-02-17 2009-05-13 美国能量变换公司 Rack enclosure
US9801309B2 (en) 2005-09-19 2017-10-24 Chatsworth Products, Inc. Ducted exhaust equipment enclosure
US9119329B2 (en) 2005-09-19 2015-08-25 Chatsworth Products, Inc. Ducted exhaust equipment enclosure
US7952869B2 (en) * 2005-09-19 2011-05-31 Chatsworth Products, Inc. Air diverter for directing air upwardly in an equipment enclosure
US9084369B2 (en) 2005-09-19 2015-07-14 Chatsworth Products, Inc. Vertical exhaust duct
US8737068B2 (en) 2005-09-19 2014-05-27 Chatsworth Products, Inc. Ducted exhaust equipment enclosure
US8730665B2 (en) 2005-09-19 2014-05-20 Chatsworth Products, Inc. Vertical exhaust duct
US9974198B2 (en) 2005-09-19 2018-05-15 Chatsworth Products, Inc. Vertical exhaust duct for electronic equipment enclosure
US8107238B2 (en) 2005-09-19 2012-01-31 Chatsworth Products, Inc. Ducted exhaust equipment enclosure
US8257155B2 (en) 2006-01-20 2012-09-04 Chatsworth Products, Inc. Selectively routing air within an electronic equipment enclosure
US7862410B2 (en) 2006-01-20 2011-01-04 American Power Conversion Corporation Air removal unit
US7525799B2 (en) * 2006-12-22 2009-04-28 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. Cabinet for electronic devices
US8040673B2 (en) 2008-09-08 2011-10-18 Chatsworth Products, Inc. Ducted exhaust equipment enclosure
US7894190B2 (en) 2009-01-05 2011-02-22 Chatsworth Products, Inc. Electronic equipment enclosure with side-to-side airflow control system
US7957139B2 (en) 2009-01-05 2011-06-07 Chatsworth Products, Inc. Electronic equipment enclosure with side-to-side airflow control system
WO2011033270A2 (en) 2009-09-21 2011-03-24 4Energy Limited Equipment cabinet
WO2011033270A3 (en) * 2009-09-21 2011-06-23 4Energy Limited Equipment cabinet
US8653363B2 (en) 2010-06-01 2014-02-18 Chatsworth Products, Inc. Magnetic filler panel for use in airflow control system in electronic equipment enclosure
US9585266B2 (en) 2010-11-08 2017-02-28 Chatsworth Products, Inc. Header panel assembly for preventing air circulation above electronic equipment enclosure
US9955616B2 (en) 2010-11-08 2018-04-24 Chatsworth Products, Inc. Header panel assembly for preventing air circulation above electronic equipment enclosure
US9313927B2 (en) 2010-11-08 2016-04-12 Chatsworth Products, Inc. Header panel assembly for preventing air circulation above electronic equipment enclosure
US9655259B2 (en) 2011-12-09 2017-05-16 Chatsworth Products, Inc. Data processing equipment structure
US9952103B2 (en) 2011-12-22 2018-04-24 Schneider Electric It Corporation Analysis of effect of transient events on temperature in a data center

Also Published As

Publication number Publication date Type
GB9921094D0 (en) 1999-11-10 grant
GB2354066B (en) 2001-07-18 grant

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20170907