ELECTRIC SWITCHBOARD

WIPO Patent Application WO/2023/243137

A1

An electric switchboard according to the present disclosure includes: a power converter housed in a casing; an intake port and an exhaust port; a fan that causes air in the casing to flow from the intake port to the exhaust port; a first partition section dividing the inside of the casing into a first region where a low-heat-generation component is arranged and a second region where no low-heat-generation component is arranged; and a second partition section that is arranged downstream of the first partition section and divides the second region into an inner region where a high-heat-generation component is arranged and an outer area where no high-heat-generation component is arranged. The first partition section has a first inlet through which air in the casing flows into the first region, and a first outlet through which air that has flowed through the first region flows out to the second region. The second partition section has a second inlet that faces the first outlet while being spaced apart from the first outlet, and a second outlet through which air that has flowed through the inner region flows out to the outer region, the second partition section being formed so that the flow path cross-sectional area of the inner region gradually increases from the second inlet to the second outlet.

SANADA TOMOHIKO (JP)
IIDA RYO (JP)

PCT/JP2023/004093

December 21, 2023

February 08, 2023

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MITSUBISHI HEAVY IND LTD (JP)

H05K7/20; H02B1/56; H02M7/48

JP2014203622A	2014-10-27
JP2017184387A	2017-10-05
JP2007208116A	2007-08-16
JPH04309294A	1992-10-30
US20100065254A1	2010-03-18
JP2003075917A	2003-03-12
JPH10200282A	1998-07-31

MATSUNUMA Yasushi et al. (JP)

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