Arrangement and method for removing heat from a component which is to be cooled
An arrangement, for heat dissipation from a component that is to be cooled, features: a pump for pumping a coolant, which pump comprises a pump rotor; a fan that comprises a fan rotor associated with which is an electric motor to drive it, the pump rotor and the fan rotor being separated from one another in fluid-tight fashion and drivingly connected to one another via a magnetic coupling. A corresponding method for heat dissipation from a component that is to be cooled, uses a fan having a fan rotor and a drive motor, a pump having a pump rotor, a coolant that is pumpable by means of the pump, to perform the steps of A) imparting a rotational motion to the fan rotor by means of the drive motor; B) imparting a rotational motion to the pump rotor via the magnetic coupling; and C) causing the coolant to flow by the rotational motion of the pump.
1. An arrangement for cooling a component, comprising
a pump for pumping a coolant, which pump has a pump rotor composed of a plastic material with a plurality of magnetic particles or segments embedded in said mass of non-magnetic material;
a fan having a fan rotor and an electric motor to drive it,
a magnetic cup connected to the fan rotor,
the pump rotor and the fan rotor being separated from one another in fluid-tight fashion and drivingly connected to one another via a magnetic coupling occurring, during rotation, by magnetic interaction among said magnetic cup and said pump rotor.
2. The arrangement according to claim 1 ,
the pump rotor comprising a plurality of pump vanes ( 86 ) for generating a flow of the coolant ( 52 ).
3. The arrangement according to claim 2 ,
the pump vanes being implemented integrally with the pump rotor ( 84 ).
4. The arrangement according to claim 1 , the fan ( 30 ) having a fan housing ( 71 ) and the pump ( 24 ) having a pump housing ( 82 ) ; and further comprising
a pump retaining member ( 72 ) that connects the fan housing ( 71 ) to the pump housing ( 82 ).
5. The arrangement according to claim 4 , wherein the fan housing ( 71 ) and the pump retaining member ( 72 ) are implemented integrally.
6. The arrangement according to claim 1 , further comprising
a heat exchanger ( 28 ) for cooling the coolant ( 52 ), which exchanger is located in an air flow region of the fan ( 30 ) and is in fluid communication with the pump ( 24 ) for the coolant ( 52 ).
7. The arrangement according to claim 6 , wherein the heat exchanger ( 28 ) is implemented as a flat-tube heat exchanger.
8. The arrangement according to claim 6 ,
the heat exchanger ( 28 ) comprising a plurality of plates ( 96 ) for the passage of air.
9. The arrangement according to claim 8 ,
the plates ( 96 ) comprising a plurality of shutters ( 130 , 135 ) for improving the absorption of heat by the air passing through.
10. The arrangement according to claim 6 ,
the heat exchanger ( 28 ) comprising a heat exchanger housing ( 88 ) and the fan ( 30 ) comprising a fan housing ( 71 ); and
the heat exchanger housing ( 88 ) and fan housing ( 71 ) being implemented integrally.
11. The arrangement according to claim 10 ,
further comprising
a pump retaining member ( 72 ) that connects the fan housing ( 71 ) to the pump ( 24 ),
the heat exchanger housing ( 88 ), the fan housing ( 71 ), and the pump retaining member ( 72 ) being implemented integrally.
12. The arrangement according to claim 6 ,
which comprises a heat absorber ( 20 ) for cooling a component,
which heat absorber ( 20 ) is in fluid communication both with the pump ( 24 ) and with the heat exchanger ( 28 ) and forms with them a coolant circuit.
13. The arrangement according to claim 12 , the heat absorber ( 20 ) comprising external cooling fins.
14. The arrangement according to claim 12 , an additional fan being associated with the heat absorber ( 20 ) for cooling.
15. The arrangement according to claim 12 , comprising a component ( 12 ) to be cooled,
a heat transfer improvement medium, being arranged between the heat absorber ( 20 ) and the component ( 12 ) to be cooled.
16. The arrangement according to claim 12 ,
the heat absorber ( 20 ) being implemented as a flat-tube heat absorber.
17. The arrangement according to claim 16 ,
the heat absorber ( 20 ) comprising a heat absorption element ( 64 ) that is manufactured from a material selected from the group consisting of copper and aluminum.
18. The arrangement according to claim 1 , further comprising a rotation speed controller ( 122 ) associated with the electric motor ( 76 ).
19. The arrangement according to claim 18 , further comprising
a temperature sensor ( 120 ) that is connected to the rotation speed controller ( 122 ) in order to control a temperature-dependent rotation speed.
20. The arrangement according to claim 19 , wherein the temperature sensor ( 120 ) is a Negative Temperature Coefficient (NTC) resistor.
21. The arrangement according to claim 19 , wherein the temperature sensor ( 120 ) is located adjacent the heat absorber ( 20 ).
22. The arrangement according to claim 19 , wherein
the temperature sensor ( 120 ) is arranged adjacent a component ( 12 ) to be cooled.
23. The arrangement according to claim 19 , wherein
the temperature sensor ( 120 ) is arranged at least partly in the coolant, in thermally conductive relation to a circuit of said coolant.
24. The arrangement according to claim 1 , wherein the fan ( 30 ) is implemented as a radial fan.
25. The arrangement according to claim 1 , wherein the fan ( 30 ) and the pump ( 24 ) are connected detachably to one another.
26. The arrangement according to claim 25 ,
the fan ( 30 ) and the pump ( 24 ) being connected to one another via a quick-release coupling.
27. The arrangement according to claim 1 , further comprising metal conduits for fluid circulation of said coolant.
28. The arrangement according to claim 1 , wherein
the fan ( 30 ) is formed with a fluid conduit ( 100 ) for conveying a coolant ( 52 ) therethrough.
29. The arrangement according to claim 28 ,
wherein the fan ( 30 ) comprises a fan housing ( 71 ) , and the fluid conduit ( 100 ) is implemented in the fan housing ( 71 ).
30. The arrangement according to claim 29 ,
wherein the fan housing ( 71 ) comprises cooling fins.
31. The arrangement according to claim 29 ,
wherein the fan housing ( 71 ) comprises a thermally conductive plastic.
32. The arrangement according to claim 28 ,
wherein the fan ( 30 ) comprises a stator ( 76 ) having electrical components, the fluid conduit ( 100 ) being routed past the electrical components of the stator ( 76 ) for cooling.
33. A method of cooling a component, using an apparatus including
a temperature sensor ( 120 ),
a fan ( 30 ) having a fan rotor ( 78 ) and a drive motor ( 76 ),
a pump ( 24 ) having a pump rotor ( 84 ),
a coolant ( 52 ) that is pumpable by means of the pump ( 24 ),
a magnetic coupling ( 80 , 84 ) that drivingly connects the fan rotor ( 78 ) and the pump rotor ( 84 ), and
a drive motor rotational speed controller ( 122 ),
comprising the steps of:
sensing temperature using said temperature sensor ( 120 ) and generating a corresponding temperature output value,
associating said temperature output value, in said rotational speed controller ( 122 ), with a corresponding target rotation speed,
driving the fan rotor ( 78 ) toward said target rotation speed by means of the drive motor ( 76 ) in accordance with control signals applied by said speed controller to said motor ( 76 );
imparting a rotational motion to the pump rotor ( 84 ), via the magnetic coupling ( 80 , 84 ), by means of the rotational motion of the fan rotor ( 78 ) ; and
causing the coolant ( 52 ) to flow by the rotational motion of the pump ( 84 ).
34. The method according to claim 33 ,
using a heat exchanger ( 28 ) to cool the coolant, which exchanger is in fluid communication with the pump ( 24 ),
which method additionally comprises the following steps:
air is caused to flow by the rotational motion of the fan rotor ( 78 );
the coolant ( 52 ) is pumped through the heat exchanger ( 28 ) by the pump ( 24 );
the coolant is cooled by the flow of heat from the coolant ( 52 ) to the air that has been caused to flow.
35. The method according to claim 34 ,
using a heat absorber ( 20 ) to cool a component, which exchanger is in fluid communication with the pump ( 24 ) and the heat exchanger ( 28 ),
which method additionally comprises the following step:
the coolant ( 52 ) is pumped through the heat absorber ( 20 ) by the pump ( 24 ).
36. The method according to claim 35 ,
the pump ( 24 ), the heat exchanger ( 28 ), and heat absorber ( 20 ) forming a coolant circuit,
which method additionally comprises the following step:
the coolant is pumped through the coolant circuit in the sequence: pump ( 24 ), heat exchanger ( 28 ), heat absorber ( 20 ), pump ( 24 ).
37. The method according to claim 36 ,
the pump ( 24 ), the heat exchanger ( 28 ), and the heat absorber ( 20 ) forming a coolant circuit,
which method additionally comprises the following step:
the coolant ( 52 ) is pumped through the coolant circuit in the sequence: pump ( 24 ), heat absorber ( 20 ), heat exchanger ( 28 ), pump
( 24 ).
38. The method according to claim 34 ,
using a housing, in which the heat exchanger is located,
which method additionally comprises the following step:
the air heated by the heat exchanger ( 28 ) is discharged directly from the housing.
39. The method according to claim 38 , further comprising the step of:
directing the air flowing into the housing, as a result of the rotational motion of the fan rotor ( 78 ), over any components located in the housing.