BUILDING UNIT WITH HEAT-CONTROLLED PNEUMATIC FACADE Russian patent published in 2007 - IPC E04C1/40 

FIELD: construction, particularly production of multilayered building blocks provided with pneumatic structural members used for building and building structure wall erection and having ability of heat conductive properties change in response to ambient temperature change.

SUBSTANCE: building unit comprises concrete layer made of concrete mix preferably based on rigid cement and heat insulation layer. Concrete layer is box-like member with faces defining cavity for heat-insulation layer receiving. Heat-insulation layer is made as sealed bag of air-tight elastic material. The bag is secured inside the cavity and has inlet and outlet orifices provided with two chambers. The first chamber has mechanical thermocontroller to close outlet orifice if ambient temperature is greater than predetermined temperature value and one-way valve. The one-way valve opens in the case of decreased ambient air pressure. The second chamber has the second mechanical thermocontroller to close inlet orifice if ambient temperature is below predetermined temperature value and one-way valve. The one-way valve opens in the case of increased ambient air pressure.

EFFECT: improved heat-insulation properties and possibility of building block usage as load-bearing member.

6 cl, 6 dwg