In recent years, the spread of eco-car has led to the demand for adaptation to low heat source, high efficiency and low noise in vehicle air conditioner. On the other hand, larger interior space of vehicle to assure passenger comfort is demanded, so that the car air-conditioner is required to be smaller. Therefore, we adopted 2-layer HVAC for the air conditioner which can respond to a low heat source. At the same time we have developed the compact high-efficiency 2-layer blower fan for HVAC in order to enable the 2-layer HVAC to be mounted on eco-car with smaller space than conventional HVAC.Generally, because axial flow velocity increases resulting from downsizing of the blower, the ununiform velocity distribution in the axial direction and the turbulent flow between fan blades occurs. It causes the efficiency decrease.To satisfy both downsizing and high-efficiency of the 2-layer blower, we have developed new technologies which can make the flow uniform between fan blades. The new fan is characterized by the inclined blade leading edge. This inclination of edge spread inside diameter of fan in the upper part more than the under part. Furthermore, we devised new scroll which is extended main flow part. This expansion of scroll prevents main flow from colliding with the scroll wall.We were able to reduce electricity consumption by 20% and noise by 4.5dBA with 40% of downsizing.By compact high-efficiency 2-layer blower, we were able to place 2-layer HVAC in the smaller space than ever before.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Compact High-Efficiency 2-Layer Blower Fan for HVAC


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2016 World Congress and Exhibition ; 2016



    Publication date :

    2016-04-05




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Compact High-Efficiency Blower Fan for HVAC

    Sakai, Masaharu / Ochiai, Toshinori / Mitsuishi, Yasushi | SAE Technical Papers | 2010


    Compact high-efficiency blower fan for HVAC

    Masaharu,S. / Toshinori,O. / Yasushi,M. et al. | Automotive engineering | 2010


    Compact High-Efficiency Blower Fan for HVAC

    Sakai, M. / Ochiai, T. / Mitsuishi, Y. et al. | British Library Conference Proceedings | 2010


    Development of Compact High Efficiency Blower Fan for HVAC

    Sakai, M. / Ochiai, T. / Mitsuishi, Y. et al. | British Library Conference Proceedings | 2009


    HVAC BLOWER

    LAKHI NANDLAL GOENKA / ERIC KEITH HAUPT / HEIDI CRANDALL | European Patent Office | 2016

    Free access