Use of rigid or permeable conduits for achieving faster vacuum evacuation time in vacuum insulated structures

An appliance comprising:

• an outer wrapper defining a top wall, a bottom wall, a rear wall, and first and second side walls;
• an inner liner sealed to the outer wrapper to define an insulation space;
• a vacuum port disposed on one of the top wall, the bottom wall, the rear wall, the first side wall and the second side wall of the outer wrapper;
• a channel integrally formed with the outer wrapper disposed within the insulation space and in fluid communication with the vacuum port, the channel including a first branch and a second branch extending from the vacuum port and along the top wall, bottom wall, and first and second side walls, wherein the first branch and second branch are coupled in a loop configuration that terminates at the vacuum port;
• an insulative material disposed between the outer wrapper and the inner liner;
• and
• a filter media disposed along the channel such that air can be drawn from the insulation space past the filter media, into the channel, and through the vacuum port.

An appliance comprising:

• an outer wrapper defining a top wall, bottom wall, rear wall, and first and second side walls;
• an inner liner sealed to the outer wrapper to define an insulation space;
• a vacuum port disposed on the outer wrapper;
• a channel extending through the insulation space and in fluid communication with the vacuum port;
• an insulative material disposed between the outer wrapper and inner liner;
• and
• a filter media forming at least a portion of a wall of the channel between the channel and the insulative material such that air can be drawn from the insulation space past the filter media, into the channel and through the vacuum port, and
• wherein the channel is formed by the filter media and the outer wrapper, and wherein the channel protrudes outside a planar extent of an external surface of the outer wrapper.