The invention provides a volute of a centrifugal fan, the centrifugal fan provided with the same and an air conditioning system and relates to the technical field of centrifugal fans. A molded line ofthe volute is formed by a spiral line part, a volute throat gap part, a linear diffusion part on the inner side of the volute and a linear diffusion part on the outer side of the volute, wherein thespiral line part is an equal angle spiral line, angles of contingence of which are equal everywhere, and the polar equation of any point M (rho, t) on the spiral line part is as follows: rho(t)=0.5De0.001765t, wherein rho is spiral radius, D is outer diameter of a fan blade, e is natural number radix, and t is helical angle and larger than or equal to 60 degrees but smaller than or equal to 400 degrees. An air flow is collected better and is guided to be diffused, so that the pressure loss is reduced, the static pressure of a fan is improved and the flowing efficiency of the fan blade is improved. Compared with a conventional volute, the air quantity is improved by 16.8%, the static pressure is improved by 22.3%, and the fan efficiency is improved by 3%. Therefore, the energy efficiency ratio of an air conditioner of a bus and the integral comfort demand can be improved, and the integral cruising ability is improved.

    本发明提供一种离心风机蜗壳具有其的离心风机和空调系统,涉及离心风机技术领域,该蜗壳的型线由螺旋线部分、蜗舌部分、蜗壳内侧直线扩压部分以及蜗壳外侧直线扩压部分围成,其中,螺旋线部分是一条等角螺旋线,其切线角处处相等且螺旋线部分上任一点M(ρ,t)极坐标方程为:ρ(t)=0.5De0.001765t,其中ρ为螺旋半径,D为风叶外径、e为自然数底数,t为螺旋角,且有60°≤t≤400°。使其更好的收集气流引导气流扩张,减小压力损失,提高风机的静压,提高风叶的流动效率,相比传统的蜗壳风量提升16.8%,静压提升22.3%,风机效率提升3%,从而可以提高大巴空调能效比和整车的舒适性要求,提升整车的续航能力。


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    Title :

    Volute of centrifugal fan, centrifugal fan provided with same and air conditioning system


    Additional title:

    一种离心风机蜗壳具有其的离心风机和空调系统


    Contributors:
    CAO LEI (author) / ZOU JIANHUANG (author) / GENG FUSHUAI (author) / HE HAOHAO (author) / CHEN FUQI (author)

    Publication date :

    2020-10-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F04D Strömungsarbeitsmaschinen , NON-POSITIVE-DISPLACEMENT PUMPS / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht



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