A plural-fans driving apparatus is provided to drive a first fan and a second fan, and the first fan and the second fan are three-phase fans. The plural-fans driving apparatus includes a controller, a first three-phase motor driver structure, a second three-phase motor driver structure, and a protection and input interface circuit. The protection and input interface circuit is coupled to the first three-phase motor driver structure and the second three-phase motor driver structure, and protects the first three-phase motor driver structure and the second three-phase motor driver structure. The controller controls the first three-phase motor driver structure to drive the first fan, and controls the second three-phase motor driver structure to drive the second fan.

A multiplane fan cooling system and method is disclosed for a cooling system with first, second and intake planes; a first fan and heat exchanger on the first plane, a second fan and heat exchanger on the second plane, and a shared air cavity bounded at least partially by these three planes. Each fan pulls air into the shared air cavity through the intake plane and across its associated heat exchanger. The first fan cools the first heat exchanger, and counteracts the second fan from drawing air into the shared air cavity through the first heat exchanger. The second fan cools the second heat exchanger. The second fan can be activated to counteract the first fan from drawing air into the shared air cavity through the second heat exchanger. All the air in the shared air cavity can be available to each of the fans.

A system that may include an engine, and a fan configured to vary a measured engine temperature of the engine during operation. A vehicle controller may also be provided having one or more processors that may be configured to determine an ice risk characteristic of the engine, operate the fan to cool the engine based on the ice risk characteristic, and operate the fan to rotate in reverse based on the ice risk characteristic.

A standby generator includes a standby generator enclosure having a partition wall separating a first end from an opposite second end of the enclosure, one or more airflow openings, and a first air duct and a second air duct each coupled to at least one of the one or more airflow openings. An engine mounts in the enclosure toward the first end from the partition wall, and an alternator driven by the engine mounts in the enclosure toward the second end from the partition wall. The engine includes an engine cooling fan that faces the first end to drive engine cooling air received from the first air duct toward the first end, and the alternator includes an alternator cooling fan that faces the second end to drive alternator cooling air received from the second air duct toward the second end.

A working machine includes a machine body, an engine provided on the machine body, a radiator to cool a coolant supplied to the engine, a first fan provided on one directional surface side of the radiator, the first fan being rotatable in either one of a first direction to suck external air to an interior of the machine body and a second direction to generate an air flow for discharging air from the interior of the machine body to an exterior of the machine body, and a second fan provided on the other directional surface side of the radiator and configured to be rotated in the second direction.

The invention relates to a heat exchange module (402) for a motor vehicle, comprising: a first heat exchanger (404) comprising at least a first stage (404a) and a second stage (404b), said first heat exchanger being configured such that the first and the second stages are in fluid connection within the same cooling circuit (600) of the motor vehicle; a ventilation device (408) comprising at least one tangential fan (410) for setting in motion an air flow (F) intended to pass through the first heat exchanger (404), and wherein the first (404a) and second (404b) stages of the first heat exchanger (404) are arranged opposite each other, one behind the other with respect to the direction of flow of the air flow (F), so that the air set in motion by the tangential fan (410) successively passes through the first stage (404a) and then through the second stage (404b).

A plural-fans driving apparatus is provided to drive a first fan and a second fan, and the first fan and the second fan are three-phase fans. The plural-fans driving apparatus includes a controller, a first three-phase motor driver structure, a second three-phase motor driver structure, and a protection and input interface circuit. The protection and input interface circuit is coupled to the first three-phase motor driver structure and the second three-phase motor driver structure, and protects the first three-phase motor driver structure and the second three-phase motor driver structure. The controller controls the first three-phase motor driver structure to drive the first fan, and controls the second three-phase motor driver structure to drive the second fan.

This cooling fan device for a vehicle comprises: a fan shroud which is shaped as a box accommodating a radiator and/or a condenser, and which has an opening in the front side in the travel direction of the vehicle and a fan coupling surface in the rear side in the travel direction; at least two cooling fans disposed in the fan coupling surface, the cooling fans having center axes vertically separated from each other by a predetermined distance; and a shield rib extending downward from the top of the fan coupling surface, protruding toward the radiator and/or the condenser, and having a top end and a bottom end, the shield rib being provided to the fan coupling surface between the adjacent cooling fans. The top end and/or the bottom end of the shield rib have a cutout section allowing air to pass between the adjacent cooling fans.

A counter-rotating fan assembly includes an upstream fan that rotates in a first direction about a common axis and a downstream fan that rotates in a second, opposed direction about the common axis. The assembly has an upstream motor that drives the upstream fan, and an upstream motor support that supports the upstream motor. The assembly also has a downstream motor that drives the downstream fan, and a downstream motor support that supports the downstream motor. The upstream motor support is located upstream of the upstream fan, and the downstream motor support is located downstream of the downstream fan.

A fan assembly including a first cooling fan arranged with respect to an air flow direction downstream of a heat exchanger and a second cooling fan. The first cooling fan is a radial fan that draws cooling air axially and expels the cooling air radially and the second cooling fan is an axial fan that draws cooling air axially and expels the cooling air axially. The axial fan is arranged downstream of the heat exchanger and laterally adjacent to the radial fan in a plane parallel to the rear side of the heat exchanger in a plane parallel to the front side of the heat exchanger.