Patent ID: 11892205
Assignee: BIO-RAD LABORATORIES, INC.
Field: Chemical engineering (Chemistry)
Classification: CPC F  B  H | IPC B  F  H

Claim 19:
20. A temperature control assembly for a thermal cycling of a sample block, the assembly comprising:
one or more thermoelectric devices comprising one or more thermoelectric elements operably coupled between an active face for thermal coupling with the sample block and a reference face for thermal coupling with a heat sink;
a heat sink comprising a slab of thermally conductive material having a raised portion with a top surface thermally coupled with a planar face of the one or more thermoelectric devices, wherein the raised portion includes:
an outer periphery that contacts the planar face of the one or more thermoelectric devices,
a central raised region defined in a shape corresponding to an uneven temperature distribution of the heat sink, and
a void region between the outer periphery and the central raised region, wherein the void region surrounds the central raised region,

a supporting material having a lower thermal conductivity than the slab disposed within the void region that contacts and supports the planar face of the one or more thermoelectric elements facing the void region when the assembly is clamped together, and
a plurality of heat dissipating fins thermally coupled with an underside of the slab opposite the raised portion of the slab.