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Device for driving at three speeds fans for cooling coolant in motor vehicles

A motor vehicle, coolant technology, applied in the control of coolant flow, engine cooling, engine components, etc., can solve problems such as power consumption

Active Publication Date: 2020-06-30
BARUFFALDI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This configuration is disadvantageous both from a structural point of view and due to the fact that when the brake is engaged, power is dissipated in any case due to the resistive torque of the Foucault coupling, thus using energy

Method used

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  • Device for driving at three speeds fans for cooling coolant in motor vehicles
  • Device for driving at three speeds fans for cooling coolant in motor vehicles

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Embodiment Construction

[0020] Such as figure 1 As shown in , for easier illustration purposes only, and without any limiting meaning, it is assumed that a pair of reference axes are respectively in the longitudinal direction X-X (coinciding with the rotation axis of the device) and the transverse / radial direction Y-Y (perpendicular to the first direction) and with the front part "A" corresponding to the axial position of the fan and the rear part "P" opposite to this front part, the device according to the invention for driving and controlling a fan 1 of a motor vehicle basically include:

[0021] - fixed axial sleeve 10, which is fixed on the base 11 of the engine by means of screws 11a;

[0022] - fan support 1a;

[0023] - a first electromagnetic coupling 100;

[0024] - a second electromagnetic coupling 200;

[0025] - Eddy current or Foucault coupling 300 .

[0026] In a more detailed and preferred example embodiment:

[0027] The first electromagnetic coupling 100 includes: a first elect...

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PUM

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Abstract

A device for driving at three speeds a fan (1) for cooling the coolant in a motor vehicle, comprising: a fixed axial sleeve (10) designed to be fastened to a base (11) of the vehicle engine; a fan support (1a) for carrying the fan (1); a first electromagnetic coupling (100) comprising a first fixed electromagnet (110), a first rotor (120); a second electromagnetic coupling (200) comprising a fixedelectromagnet (210) mounted on the axial sleeve (10), a second rotor (220) and an armature (240) axially arranged on the opposite side to the second electromagnet (210) relative to the second rotor (220) and rotationally integral with the rotor (120) of the first coupling; an eddy current or Foucault coupling (300). The first coupling, the second coupling and the Foucault coupling are arranged between means (121) for taking up a rotational movement and the support (1a) of said fan (1), and the first rotor and the second rotor (220) are mounted on a respective bearing (121, 221) keyed on the fixed axial sleeve (10), wherein a driving part of the Foucault coupling (300) is mounted on the second rotor (220) and the driven part of the Foucault coupling is integral with the support (1a) of thefan (1), so that the excitation of only the electromagnet (210) of the second coupling (200) causes rotational driving of the fan support (1a) at a speed slower than that of the first rotor (120), bymeans of the Foucault coupling (300).

Description

technical field [0001] The invention relates to a device for driving a fan at three speeds for cooling the coolant in a motor vehicle. Background technique [0002] In the technical field concerning the cooling of the coolant contained in the radiator of a motor vehicle, it is known that air needs to be forced onto said radiator in order to dissipate heat outwards from the liquid as quickly as possible, said forced air flow passing Obtained by rotating a fan, usually mounted directly on the engine shaft, or on the shaft of a water pump, or on a fixed driven shaft with a pulley that receives motion from a belt driven through the engine shaft. [0003] It is also known that the fan rotates only when a certain predetermined water temperature is reached, detected by means of a thermostat which operates an electromagnetic clutch, the closure of which causes the fan to rotate. [0004] In more detail, motor vehicle fans are required to be able to spin as follows: [0005] - at a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01P7/08F01P5/04F16D27/01
CPCF01P5/04F01P7/084F16D27/112F16D27/004F16D27/12F04D25/02F04D25/022F04D25/026
Inventor P·博菲里
Owner BARUFFALDI