Abb Oy

Abb Schweiz Ag

Risto Laurila

Bruno Agostini

Tero Viitanen

Timo Koivuluoma

Jukka Sikanen

Mikael Aulanko

Mervi Jylhäkallio

Heikki Elomaa

Erkki Ukkola

An arrangement for cooling a closed, sealed cabinet (), comprising a thermosiphon heat exchanger () disposed inside the cabinet () and having an evaporator () and a condenser () for circulating a working fluid between the evaporator () and the condenser () in a closed loop, wherein the working fluid evaporated in the evaporator () by heat flows to the condenser () for cooling and the condensed working fluid flows back to the evaporator (). The evaporator () is exposed to hot air flow generated inside the cabinet (), and a heat transfer element () is attached to the condenser () in a sealed manner through a cabinet wall () for transferring heat to the outside of the cabinet ().

Arrangement for cooling a closed cabinet

The disclosure relates to a gas permeable wall for preventing dirt present in a gas flow from passing through the gas permeable wall with the gas flow. In order to minimize maintenance, the gas permeable wall is a circumferential wall of a cover, and an outlet from the cover is provided for passing on gas having entered the cover through the circumferential gas permeable wall. A support is provided for attaching the cover rotatably to a device, and a drive unit is provided for rotating the cover.

Apparatus and method for removing dirt from gas flow

A simple and reliable anticipatory failure indicator is provided for fluid circulation piping, and a fluid cooling arrangement including such an indicator is provided. The indicator includes a first sacrificial member, which is designed to be in direct contact with the fluid within the piping and designed to be weaker than the piping. The indicator includes a chamber, which is isolated from the fluid circulation at least partly by means of the first sacrificial member. The indicator includes an electrical response member, which is arranged into the chamber and which is configured to produce an electrical response upon exposure to the fluid, which has entered to the chamber via a failed sacrificial member. Accordingly, the indicator is configured to provide an electrical response as a direct indication of a failed sacrificial member and as an anticipatory indication of failed piping.

Anticipatory failure indicator and fluid cooling arrangement

The present invention relates to a cooling element of an electronic device, comprising: an inlet opening, and outlet opening, and a flow channel. To achieve efficient cooling with as low costs as possible, the flow channel is designed to cause a pressure difference between the forward end and tail end of the flow channel. At the higher-pressure forward end, an inlet opening is arranged for a secondary cycle. At the lower-pressure tail end of the cooling element flow channel, an outlet opening is arranged for said secondary cycle.

Cooling element

The invention relates to a method for cooling an electrolytic capacitor comprising a casing () that surrounds a capacitive element (), and to an electrolytic capacitor. The casing () is provided with a hollow (), and a cooling element () made of an electrically insulating material is placed in the hollow (), the cooling element comprising at least one duct (), which can be arranged to receive a cooling medium. Since the cooling element placed in the hollow is made of an electrically insulating material, the cooling medium can be liquid, such as water.

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Espoo, Finland

Risto Laurila