Patent ID: 7051730

Claim:
A heat exchanging device in combination with a container and a cover, wherein: the cover is mounted on the container, thereby forming a closed space between the cover and the container; the heat exchanging device is mounted in the closed space between the cover and the container and contains a temperature regulating medium therein; wherein the heat exchanging device comprises a primary body and a secondary body mounted on the primary body, which form a space therebetween into which the temperature regulating medium is placed; wherein the secondary body has an inside separation wall which divides a heat insulating layer of the secondary body from the space between the primary body and secondary body into which the temperature regulating medium is placed; and wherein the cover has a bottom formed with a receiving portion for receiving the top of the container, and the secondary body has a tapered outer wall closely forced into the receiving portion of the cover, so that the heat exchanging device is fixed in the receiving portion of the cover.