Temperature-control device having a reaction vessel
A temperature-control device for receiving a reaction vessel having a heat-insulated interior space and which is covered by a lid. The reaction vessel has a hollow body and a cap, this hollow body being closed on one side by a base. The base contacts a heatable heating block in order to heat a sample located in the reaction vessel. The hollow body is surrounded by a heatable heating body which communicates with the lid via a heat-conducting contact region so that the heating body heats the hollow body directly and heats the cap indirectly via the lid.
1. A temperature-control device for receiving a sample, comprising:
a housing defining a heat-insulated interior space;
a heat-insulating cover configured to cover the interior space;
a reaction vessel, said reaction vessel comprising a hollow body and a cap, said hollow body being symmetrical with respect to an axis of symmetry and closed on one side by a base;
a lid made of a heat-conducting material and configured to cover the reaction vessel and contact the cap;
a heating block disposed in said interior space and configured to actively heat the reaction vessel, said heating block having an inner surface which is adapted to the base of the reaction vessel and contacts the reaction vessel as to heat a sample located therein; and
a heating body, which surrounds and contacts at least a portion of the hollow body, disposed in the interior space and configured to actively heat to the reaction vessel, the heating body adapted to the shape of the hollow body and in thermal communication with the lid via a heat-conducting contact region therebetween such that, in operation, the heating body heats the hollow body directly and heats the cap indirectly via the lid, wherein said lid includes a hole therethrough configured to enable a body to be introduced into the hollow body through the cap.
2. The temperature-control device according to claim 1 , wherein the contact region is formed by a cone-shaped outer surface of the heating body and by a cone-shaped outer surface of the lid.
3. The temperature-control device according to claim 2 , wherein the cone-shaped outer surface of the heating body is arranged on the inside of said lid.
4. The temperature-control device according to claim 1 , wherein said heating body is formed at least by two heating body shells which are arranged symmetrically with respect to the axis of symmetry, and the heating body shells are supported in the interior space via at least one spring element so that the heating body shells contact the hollow body with a restoring force of the at least one spring element.
5. The temperature-control device according to claim 4 , wherein said heating body shells are held together via at least one elastic ring.
6. The temperature-control device according to claim 5 , wherein said lid is formed of two lid shells which bear resiliently against one another.
7. The temperature-control device according to claim 1 , wherein the heat conductivity of the heat-insulating cover is less than that of the heat-conducting lid.