Heat exchange apparatus
AssigneeDunsley Heat Limited
InventorKeith H. Stokes
Life of this patent
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Abstract
Heat exchange apparatus comprises first and second heat exchange units 2, 4 with spiral pathways, each unit having a central volute which contains a respective impeller 18, 24. The pathways of each unit are separated by flexible metallic strips 14/15/16. The impellers are driven by a common motor 26 therebetween. The apparatus is intended for use in heat exchange between air streams, for example between an air stream extracted from a building and an air stream extracted from outside. Mixing of the air streams is prevented.
Claims10
Heat exchange apparatus, comprising a first heat exchange unit and a second heat exchange unit, each heat exchange unit having a fluid impeller and a heat conductive wall surrounding the impeller, wherein each said unit has a first flow pathway, surrounding the impeller, internally of the wall, and a second flow pathway, externally of the wall;
- the first and second units being so connected that the first flow pathway of the first unit communicates, via the impeller of the first unit, with the second flow pathway of the second unit;
- and the first flow pathway of the second unit communicates, via the impeller of the second unit, with the second flow pathway of the first unit.
Dependencies are inferred from the claim text.