Cooling Device

Inactive Publication Date: 2008-10-16
GUDMUNDSSON BJORN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0003]It is an object of the present invention to avoid the drawbacks mentioned above. This can be solved by means of a cooling device according to claim 1.

Problems solved by technology

The conventional systems are associated with obvious drawbacks by being comprised of several different, typically expensive, components requiring hose couplings between them, and by requiring that a vacuum is applied in the system in order to avoid air bubbles in the system.
Furthermore, the system takes up a great deal of space.

Method used

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Experimental program
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second embodiment

[0030]According to the fan section 6, see FIG. 7, a number of blocks arranged in rotational symmetry (not shown), or a circular section 20 of an air pervious material having favourable heat exchanging properties, such as a sintered material of copper, aluminium or Carbon Graphite Foam or a conductive plastic material, are arranged radially inside regular fan fins 4, which fan fins 4 can be displaced radially outwards. The cooling liquid channel(s) 16 and / or 21 in the plate 15 may then be branched, e.g. by means of pipes 24, such that at least a certain partial flow of the cooling liquid flow runs through these blocks or circular section 20. Cooling liquid channels in the form of pipes may in that case be “incorporated” in the air pervious material by means of, e.g., forming by casting, laser working or drilling. Inserting cooling liquid channels in the air pervious material through the blocks or circular section 20 can also be effected by forming cavities in the material, without th...

third embodiment

[0032] the plate 15 has a corrugated shape in order to increase the area of contact and / or thermal transmission towards the air, see FIG. 8. As mentioned above, different types of fins can be arranged on the corrugated plate 15.

[0033]According to an embodiment not shown, the orifice size of the air channel inlet is formed such that particles of dirt, mud and dust are not inclined to get caught and be accumulated in the inlet. Preferably, the size of the orifice is a few millimetres or greater. The inlet is preferably formed with angles of repose such that the centrifugal force exceeds the frictional force at occurring rotation speeds, thereby preventing the accumulation of particles of dirt, mud and dust.

[0034]It is known per se that rotating plates containing liquid to be heat exchanged towards air can be provided with pipes protruding from the plate in order to increase the surface of heat transmission. It is also known from GB 1 435 435 that such pipes protruding from the plate m...

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Abstract

A cooling device comprising a rotating part (1) provided with an internal space (3) intended for the transport of cooling liquid and provided with external fins (4) intended for the transport of gas along at least a section of the rotating part. The rotating part is symmetrical in rotation and revolves around an axis of rotation (2). The rotating part comprises a cooling liquid pump section (5), a fan section (6), and between these an intermediate section (7) arranged around the axis of rotation, where the fan section has a basic shape of a radially extended plate (15), wherein the flow of cooling liquid enters at the pump section from an object to be cooled, proceeds through the intermediate section and turns back in the vicinity of the periphery (17) of the fan section, in order to once again pass the intermediate section and then be pumped back to the object by means of the pump section.

Description

[0001]The present invention relates to a cooling device comprising a rotating part provided with an internal space intended for liquid transport of cooling liquid, and provided with external fins intended for air transport along at least a section of the rotating part. For example, the cooling device is intended for vehicle engines, such as combustion engines or electric engines, or other objects in need of heat exchange between a liquid and a gas, such as air. One example of such objects is heat pumps. As readily understood by the skilled person, it is not necessarily a matter of cooling, but any kind of heat exchanging may be relevant.STATE OF THE ART[0002]Conventional systems for cooling, e.g., vehicle engines of today are based on liquid cooled engine blocks and a radiator. The system also includes a liquid pump and a radiator fan. The conventional systems are associated with obvious drawbacks by being comprised of several different, typically expensive, components requiring hos...

Claims

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Application Information

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IPC IPC(8): F28D11/02F01P5/02F01P5/10F04D29/58F04D31/00F28DF28D1/02F28F13/00
CPCF01P5/02F01P5/10F01P2070/30F04D29/582F04D31/00F28D1/024F28D11/02F28F13/003
InventorGUDMUNDSSON, BJORN
OwnerGUDMUNDSSON BJORN