US 12,449,212 B2Granted

Heat dissipation structure for a casting block assembly

AssigneeVitesco Technologies USA, LLC

InventorJianrong Qin

Life of this patent

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Abstract

A heat dissipation structure for a casting block assembly, which includes a tube extending through a casting block, and the tube has at least one turbulence generating device to promote turbulence inside the tube and reduce boundary layer thickness, and therefore increase the heat transfer coefficient. The turbulence generating device is one or more ribs or dimples integrally formed as part of the tube, before forming the casting block around a portion of the tube. The ribs or dimples promote turbulence to reduce boundary layer thickness, and therefore increase the heat transfer coefficient. The turbulence generating devices promote higher turbulence intensity, a thinner boundary layer thickness, increased heat transfer coefficient, and a stronger bond between the tube and the casting block. The tube may have an elliptical cross-section, which allows for increased spacing between various portions of the tube while maintaining the same cross-sectional flow area, enhancing heat transfer.

Claims14

Dependent claims

An apparatus, comprising:

a casting block assembly having a turbulence generating device, the casting block assembly including:
a casting block;
a tube having a first end and a second end, and a curved portion in fluid communication with the first end and the second end, the tube extending through the casting block such that the casting block surrounds the outside of the curved portion, the tube having a circular cross-section;
and
at least one turbulence generating device integrally formed as part of the tube such that the at least one turbulence generating device is adjacent the curved portion, and the casting block surrounds the outside of the at least one turbulence generating device, the at least one turbulence generating device further comprising:
a plurality of ribs integrally formed as part of the tube, each of the plurality of ribs having a circular cross-section, and the outer diameter of each of the plurality of ribs is less than the inner diameter of the tube, and the outer diameter of each of the plurality of ribs is less than the inner diameter of the first end, and less than the inner diameter of the second end, and less than the inner diameter of the entire curved portion;
wherein the at least one turbulence generating device is integrally formed as a part of the tube that is surrounded by the casting block.

4 more elements

A casting block assembly having a turbulence generating device, the casting block assembly comprising:

a casting block;
a tube having a circular cross-section, the tube extending through the casting block, the tube further comprising:
a first end;
a first portion integrally formed with the first end;
a second end;
a second portion integrally formed with the second end, the second portion in fluid communication with the first portion;
a third portion integrally formed with and disposed between the first portion and the second portion such that the third portion is in fluid communication with the first portion and the second portion;
a first turbulence generating device integrally formed as part of the first portion, and the casting block surrounds the outside of the first turbulence generating device, the first turbulence generating device further comprising:
a first plurality of ribs integrally formed as part of the first portion of the tube, each of the first plurality of ribs having a circular cross-section, and the outer diameter of each of the first plurality of ribs is less than the inner diameter of the tube, and the outer diameter of each of the first plurality of ribs is less than the inner diameter of the first end, and less than the inner diameter of the second end, and less than the inner diameter of the entire third portion;
a second turbulence generating device integrally formed as part of the second portion, and the casting block surrounds the outside of the second turbulence generating device, the second turbulence generating device further comprising:
a second plurality of ribs integrally formed as part of the second portion of the tube, each of the second plurality of ribs having a circular cross-section, and the outer diameter of each of the second plurality of ribs is less than the inner diameter of the tube, and the outer diameter of each of the second plurality of ribs is less than the inner diameter of the first end, and less than the inner diameter of the second end, and less than the inner diameter of the entire third portion;
wherein the first turbulence generating device and the second turbulence generating device are surrounded by the casting block.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/818,468Filed 9 Aug 2022
Published: US 2024/0053114 A115 Feb 2024
Granted: 21 Oct 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

B22D 19/0072
Casting in, on, or around objects which form part of the product: for making objects with integrated channels
F28F 13/12
By affecting the pattern of flow of the heat-exchange media: by creating turbulence, e.g. by stirring, by increasing the force of circulation
B60H 1/00328
Heat exchangers for air-conditioning devices: of the liquid-air type
B60H 1/00392
For vehicles having an electrical drive, e.g. hybrid or fuel cell: for electric vehicles having only electric drive means