Heat exchanging element
AssigneePanasonic Corporation
InventorsMakoto Sugiyama, Takuya Murayama
Life of this patent
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Abstract
A lamination type heat exchanging element for use in heat exchange type ventilators and other air conditioning devices eliminates drift in the air passages while maintaining its structural strength, thereby providing high heat exchange efficiency. The heat exchanging element also prevents airflow leakage due to peeling between heat exchanger plates and other components. To achieve this, rectification portions are provided which eliminate drift in the air passages due to different ventilation resistances of the flow channels caused by their different flow channel lengths generated by flow channel division portions, thereby forming a predetermined flow velocity distribution in the counterflow regions.
Claims21
A heat exchanging element for performing heat exchange by circulating a primary airflow and a secondary airflow through corresponding air passages alternately formed between a plurality of heat exchanger plates laminated on each other with a predetermined spacing, the heat exchanging element comprising:
- counterflow regions in which the primary airflow and the secondary airflow flow opposite to each other with the heat exchanger plates therebetween;
- shield portions for preventing airflow leakage from regions other than inlet ports and outlet ports of the primary airflow and the secondary airflow in the air passages;
- flow channel division portions for dividing each of the air passages into a plurality of flow channels, the flow channels divided by the flow channel division portions having different flow channel lengths from each other;
- and
- rectification portions arranged in the air passages, the rectification portions providing a predetermined flow velocity distribution of the primary airflow and the secondary airflow circulating through the counterflow regions in the flow channels divided by the flow channel division portions.
Dependencies are inferred from the claim text.