Heat exchange – Conduit within – or conforming to – panel or wall structure – Opposed plates or shells
Patent
1997-09-04
2000-03-21
Flanigan, Allen
Heat exchange
Conduit within, or conforming to, panel or wall structure
Opposed plates or shells
165 804, 165146, F28F 312
Patent
active
060391146
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a cooling body having an upper part, a lower part and lugs that are attached with material-to-material binding to at least one inside surface of the upper and lower parts, project into the cooling medium and are separated by channels.
German patent DE 40 17 749 discloses a cooling body assembled from an upper and a lower half, and in which lugs are disposed, with material-to-material bonding, on the inside surface of such a half, perpendicularly in the flow path of the cooling medium.
The problem of an arrangement of this type is that the heat dissipation of some components on the outside surfaces of the cooling body is inhomogeneous. The flow path is short-circuited between the cooling-medium inlet and the cooling-medium outlet. Therefore, hot zones form on the outside surfaces. The heat resistance of the arrangement of DE 40 17 749 is also high, approximately 30 K/kW, which leads to overheating of the cooling medium.
SUMMARY OF THE INVENTION
It is therefore the object of the invention to provide a cooling body having a lug arrangement that improves the flow conditions in the cooling body.
The object is accomplished by providing a greater ratio of the volume percent of the lugs to the volume percent of the channels in the region of an imaginary, direct connecting line between a cooling-medium outlet and a cooling-medium inlet than in the regions outside of the imaginary connecting line. Refining and advantageous embodiments ensue from the description.
In the cooling body of the invention, the local density of the lugs is selected such that an essentially homogeneous flow resistance dominates in the interior of the cooling body. A short-circuiting of the flow path of the cooling medium is prevented, and the cooling medium flows uniformly around the lugs.
It is especially advantageous if the lugs attached with material-to-material bonding to at least one inside surface additionally converge to a point, and the respective lug contact surface with an inside surface of the cooling body has the largest lug cross section. This reduces the heat resistance of the arrangement.
It is also advantageous to assemble the cooling body from a plurality of detachable parts. In one modification, which possesses the original, inventive form, the lugs (5, 5') are disposed along the flow path with an opening angle of 40.degree. to 60.degree..
The cooling body of the invention is distinguished by the embodiment of the lugs, which is beneficial to flow, and by a high filling ratio of lugs in the interior of the cooling body.
It is particularly advantageous if the lugs attached with material-to-material bonding to at least one inside surface converge to a point, and the respective lug contact surface with an inside surface of the cooling body has the largest lug cross-sectional surface. The heat resistance of the arrangement is thus reduced.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is described in detail below in conjunction with drawings.
Shown are in:
FIG. 1a is a side view of a cooling body,
FIG. 1b is a plan view of the inside of a cooling-body half with non-uniformly-distributed lugs,
FIG. 2 is a view from above of the inside of a further embodiment of a cooling-body half with non-uniformly-distributed lugs,
FIG. 3a is a side view of a cooling body with lugs disposed in a row, in longitudinal section,
FIG. 3b is a view of another embodiment of a cooling body with lugs disposed in a row, in longitudinal section,
FIG. 3c is a view of a cooling body having lugs that extend between one another, in longitudinal section,
FIG. 4 illustrates the structure of a multiple-part cooling body, and
FIG. 5 is a sectional side view showing a clip for connecting the parts of a multiple-part cooling body.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
FIG. 1a shows a side view of a cooling body 1 of the invention, having an upper and a lower part 2 and 2', respectively. The connections for cooling-medium inlet 3 and cooling-medium outlet 4 are indicated. The connections 3 and 4 ca
REFERENCES:
patent: 3524497 (1970-08-01), Chu et al.
patent: 4151548 (1979-04-01), Klein et al.
patent: 4450472 (1984-05-01), Tuckerman et al.
patent: 4467860 (1984-08-01), Wargo
patent: 4541004 (1985-09-01), Moore
patent: 4884630 (1989-12-01), Nelson et al.
patent: 5239200 (1993-08-01), Messina et al.
Becker Klaus
Heinemeyer Peter
Jung Matthias
Staiger Wolfgang
Daimler - Benz Aktiengesellschaft
Flanigan Allen
Spencer George H.
Voorhees Catherine M.
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