| 摘要 |
A refrigeration door (10), and method for making the same, for controlling condensation, providing thermal insulation, with a desired amount of variable transmittance, without using electricity to heat the door (10). The energy-free refrigeration door includes a door frame housing (55) and an insulating glass unit comprising inner (70), middle (65), and outer (60) sheets of glass. A first sealant assembly (95) disposed around the periphery of the inner (70) and middle (65) sheets of glass forms a first chamber (94) between the inner (70) and middle (65) sheets of glass. A second sealant assembly (90) disposed around the periphery of the middle (65) and outer (60) sheets of glass forms a second chamber (92) between the middle (65) and outer (60) sheets of glass. A gas, such as krypton, air, or argon is held in the first (94) and second (92) chambers. The outer sheet of glass (60) and inner sheet of glass (70) each have an unexposed surface (62 and 72, respectively) that faces the middle sheet of glass (65). A low emissivity coating (73 and 63, respectively) is disposed on the unexposed surfaces (72 and 62) of the inner (70) and outer (60) sheets of glass so that the glass door (10) as a whole has a U value that prevents formation of condensation on the outer surface of the outer sheet (60) of the glass door, without the application of electricity to heat the door, while also providing the desired evaporation rate of condensation from the inner side of the inner sheet (70) of the glass door. |
