Heat recovering fan

A heat-recovering device for simultaneously aerating and deaerating rooms comprising:

• (a) separate spent air and outside air inlets and separate supply air and exhaust air outlets,
• (b) a rotatable annular capillary impeller located in communication with said air outlets and constituting a heat exchanger,
• (c) a separating plate means to separate air currents, and
• (d) at least one radial vane wheel is disposed concentrically within the capillary impeller and is effective to convey air directly against parts of the capillary impeller,
• (e) said parts facing the outside air inlet and spent air inlet.

A heat-recovering device for simultaneously aerating and deaerating rooms comprising:

• (a) separate spent air and outside air inlets and separate supply air and exhaust air outlets,
• (b) a rotatable capillary impeller located in communication with said air outlets and constituting a heat exchanger,
• (c) a separating plate means to separate air currents,
• (d) at least one vane wheel being effective to convey air directly against parts of the capillary impeller,
• (e) said parts facing the outside air inlet and spent air inlet, and
• (f) the vane wheel is fitted coaxially with respect to the capillary impeller.

A heat-recovering device for simultaneously aerating and deaerating rooms comprising:

• (a) separate spent air and outside air inlets and separate supply air and exhaust air outlets,
• (b) a rotatable, annular capillary impeller located in communication with said air outlets and constituting a heat exchanger,
• (c) a separating plate means to separate air currents, and
• (d) at least one radial vane wheel is disposed concentrically outside the capillary impeller and is effective to convey air directly against parts of the capillary impeller,
• (e) said parts facing the outside air inlet and spent air inlet.