Vacuum insulated structure with thermal bridge breaker with heat loop
A refrigerator includes a wrapper having an opening with a front edge. A liner includes an opening and a front edge. A thermal bridge interconnects the wrapper and the liner to form a vacuum insulated cavity therebetween. The thermal bridge includes an outwardly opening channel and first and second inwardly opening channels. The front edge of wrapper is received in the first inwardly opening channel, and the front edge of the liner is received in the second inwardly opening channel. The second inwardly opening channel is inset relative to the first inwardly opening channel on the thermal bridge. A conduit is disposed within the outwardly opening channel and is configured to circulate a heated medium. The wrapper and liner are contemplated to be comprised of conductive materials, such sheet metal, while the thermal bridge is comprised of a thermally resistant material, such as a polymeric material.
1. A refrigerator comprising:
a wrapper, wherein the wrapper includes a wall portion and a front edge with a transverse portion disposed adjacent to the front edge of the wrapper, and further wherein the transverse portion of the wrapper is an angled portion extending inwardly towards a liner, and further wherein the wrapper includes a flange portion disposed between the transverse portion of the wrapper and the front edge of the wrapper, wherein the flange portion of the wrapper extends from the transverse portion of the wrapper in a direction substantially parallel to the wall portion of the wrapper;
wherein the liner is spaced-apart from the wrapper to define a vacuum insulated cavity therebetween, wherein the liner includes a wall portion and a flange portion having a front edge and a transverse portion disposed adjacent to the flange portion of the liner, and further wherein the transverse portion of the liner is an angled portion extending outwardly towards the wrapper, and further wherein flange portion of the liner extends outwardly in a forward direction and is substantially parallel to the wall portion of the liner; and
a thermal bridge having a sealing surface and first and second channels, wherein a portion of the wrapper is received in the first channel, and further wherein the front edge of the liner is received in the second channel, and further wherein the first channel is inset from the sealing surface a first distance and the second channel is inset from the sealing surface a second distance that is greater than the first distance.
2. The refrigerator of claim 1 , including:
an adhesive disposed within the second channel to adhere the flange portion to the thermal bridge in an airtight manner for retaining a vacuum in the vacuum insulated cavity.
3. The refrigerator of claim 1 , including:
an adhesive disposed within the first channel to adhere the flange portion of the wrapper to the thermal bridge in an airtight manner for retaining a vacuum in the vacuum insulated cavity.
4. The refrigerator of claim 1 , wherein the wrapper and the liner are comprised of a sheet metal material.
5. The refrigerator of claim 4 , wherein the thermal bridge is comprised of a material having a lower coefficient of thermal conductivity as compared to the sheet metal material of the wrapper and the liner.
6. A refrigerator, comprising:
an external wrapper having a wall portion and a front edge with a transverse portion disposed adjacent to the front edge of the external wrapper, and further wherein the transverse portion of the external wrapper is an angled portion extending inwardly towards a liner, and further wherein the external wrapper includes a flange portion disposed between the transverse portion of the external wrapper and the front edge of the external wrapper, wherein the flange portion of the external wrapper extends from the transverse portion of the external wrapper in a direction substantially parallel to the wall portion of the external wrapper;
wherein the inner liner includes at least one wall and an end flange portion having a front edge outwardly offset from the at least one wall by an angled portion extending towards the wrapper, wherein the end flange portion extends outwardly in a forward direction and is substantially parallel to the wall portion of the inner liner, and further wherein the inner liner is disposed inside the external wrapper; and
a trim breaker having a sealing surface, wherein the trim breaker interconnects the external wrapper and the inner liner, such that the external wrapper is spaced-apart from the inner liner to define a gap therebetween, wherein the trim breaker includes a wrapper joint in which the front edge of the external wrapper is received, and further wherein the trim breaker includes a liner joint in which the front edge of the inner liner is received, and further wherein the wrapper joint is inset from the sealing surface a first distance and the liner joint is inset from the sealing surface a second distance that is greater than the first distance.
7. The refrigerator of claim 6 , wherein the angled portion of the external wrapper is angled towards the gap disposed between the external wrapper and the inner liner.