Browse Prior Art Database

Combined Power Supply/Cooling Module

IP.com Disclosure Number: IPCOM000111085D
Original Publication Date: 1994-Feb-01
Included in the Prior Art Database: 2005-Mar-26
Document File: 2 page(s) / 80K

Publishing Venue

IBM

Related People

Cutts, S: AUTHOR [+3]

Abstract

A design of a single cooling module is disclosed which facilitates power and cooling redundancy by integration of a power supply and cooling fan into a single compact multi-modular mechanical package which is interconnected to similar units via sense and power wires. On detection of a failure, the operating mode of either power supply or fan is changed to provide additional power or increased cooling air to compensate for the failed unit. Benefits are a combined removable power and cooling assembly without downtime, which can be used for systems requiring the high availability of a power/cooling unit with in-built redundancy.

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Combined Power Supply/Cooling Module

      A design of a single cooling module is disclosed which
facilitates power and cooling redundancy by integration of a power
supply and cooling fan into a single compact multi-modular mechanical
package which is interconnected to similar units via sense and power
wires.   On detection of a failure, the operating mode of either
power supply or fan is changed to provide additional power or
increased cooling air to compensate for the failed unit.   Benefits
are a combined removable power and cooling assembly without downtime,
which can be used for systems requiring the high availability of a
power/cooling unit with in-built redundancy.

Fig. 1 shows a combined Power and Cooling module with the following
components.

1.  A low profile centrifugal fan (1) incorporating a combined air
    flow flap / deflector vane (2).

2.  A low profile removable AC to DC power supply or DC distribution
    unit (3).

3.  A support tray (4) with moulded-in antivibration diaphram fan
    motor mount (7) plus vibration damped sliders (8) is shown in
    Fig. 1c.

      The cooling fan (1) is a dc two speed fan which is wound to run
at its high speed and electronically controlled to run normally at
low speed.   On detection of the failure of a fan in another module
the fan switches to high speed operation to provide additional
cooling air.  The fan housing (Fig. 2) incorporates a flap valve/air
flow deflector vane (2) which serves two purposes.   First it acts as
a non return valve closing of the fan exit to prevent recirculation
of air flow through a failed fan. ...