초록 ▼

An improved building, e.g., a greenhouse structure, is provided herein. It consists of an enclosure having a pair of spaced-apart walls, e.g., an outer light transparent covering and an inner light transparent membrane spaced apart from the outer covering. A fan is provided for charging the space be

An improved building, e.g., a greenhouse structure, is provided herein. It consists of an enclosure having a pair of spaced-apart walls, e.g., an outer light transparent covering and an inner light transparent membrane spaced apart from the outer covering. A fan is provided for charging the space between the covering and the membrane with air, under pressure having a dew point so selected that it will not allow condensation to take place, e.g., outdoor air, or, preferably, heated air. An insulating layer is disposed in the pressurized air space between the outer covering and the inner membrane so that it is bathed, on both its faces, with the low dew point air under pressure. The insulating layer includes an insulating blanket disposed between the outer covering and the inner membrane, and is positively movable between an extended covering position and a retracted stored position. Operating structure is connected to a leading edge of the blanket and this structure is adapted to move the leading edge from its retracted stored position to its extended covering position. Cooperative structure is provided operatively associated with the trailing portion of the blanket. This structure is adapted to draw the blanket from its extended covering position to its retracted stored position. This provides a system in which heat loss from within the structure is minimized at night and yet does not result in excessive condensation within the structure.

대표청구항 ▼

A structure comprising: (A) an enclosure having an outer light-transparent wall and an inner light-transparent wall spaced apart from said outer wall; (B) means for charging the space between said outer wall and said inner wall with air under pressure, said air having a dew point so selected that it

A structure comprising: (A) an enclosure having an outer light-transparent wall and an inner light-transparent wall spaced apart from said outer wall; (B) means for charging the space between said outer wall and said inner wall with air under pressure, said air having a dew point so selected that it will not allow condensation to occur; (C) an insulating layer disposed in, and bathed on both sides by said pressurized air space which is situated between said outer wall and said inner wall, said insulating layer comprising an insulating blanket which is disposed in said pressurized air space which is situated between said outer wall and said inner wall, said insulating blanket having a leading edge and a trailing portion and being movable between an extended covering position and aretracted stored position within an enclosed storage area; (D) operating means connected to said leading edge of said insulating blanket and positively operable to move said leading edge from its said retracted stored position to its said extended covering position; and (E) means operatively associated with said trailing portion of said insulating blanket and adapted to draw said insulating blanket from its said extended covering position to its said retracted stored position.