Image Number 11 for United States Patent #7908687.
A heating and cooling device for temperature conditioning an air supply for an air conditioned appliance, said heating/cooling device comprising: a first air passage for channeling a first air flow; a second air passage for channeling a second air flow; an inlet fan for drawing air into said first, air passage; an exhaust fan for drawing air through said second air passage; one or a plurality of heat exchangers for exchanging heat between air in said first air passage and air in said second exhaust air passage; wherein said first air passage comprises a tubular channel having an inlet at a first end and only one outlet, said outlet being at a second end of said passage, and said inlet fan is positioned at said inlet, such that said first air flow is channeled through said inlet fan, along the whole of said air passage, encountering all of said one or plurality of heat exchangers, and out of said outlet.
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