Cyclonic separating device and surface cleaning device

#This application claims priority to and benefits of Chinese Patent Application Serial No. 202120625460.9, filed on Mar. 11, 2021, the entire content of which is incorporated herein by reference.

#The present disclosure relates to the field of vacuum cleaners, and more particularly, to a cyclonic separating device.

#Vacuum cleaners are commonly used cleaning devices in daily life, and can generate strong suction force, to take in foreign matter and dust accumulated on carpets, floors or other surfaces into a dust collecting cup.

#FIG. 1 is a front sectional view of a cyclonic separating device according to an embodiment of the present disclosure;

#FIG. 2 is a schematic view of the first cyclone separator group in FIG. 1; and

#FIG. 3 is a schematic view of a surface cleaning device according to an embodiment of the present disclosure.

#In order to better understand the above-described technical solutions, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are illustrated in the accompanying drawings, it should be understood that, the present disclosure can be realized in various forms and should not be limited by the embodiments set forth herein. On the contrary, provision of the embodiments enables the present disclosure to be understood more clearly and thoroughly, and enables the scope of the present disclosure to be fully conveyed to those skilled in the art.

#In the existing cyclonic separating devices, two cyclonic separation layers are stacked sequentially in an outer frame, each cyclonic separation layer includes a plurality of cyclones, and conical inlets of the plurality of cyclones are oriented towards the same side. Conical inlets of the lower cyclonic separation layer extend into space of the upper cyclonic separation layer. However, since the structure of cyclones of the cyclonic separation layers is not compact, more cyclones cannot be arranged in limited space, leading to low cyclonic separation efficiency.

#As illustrated in FIGS. 1 and 2, the present embodiment provides a cyclonic separating device 2, which includes a dust cup 21 and a first cyclonic separating unit 201 and a second cyclonic separating unit 202 that are provided in the dust cup 21. The first cyclonic separating unit 201 is fitted over an outside of the second cyclonic separating unit 202. The cyclonic separating device 2 in the present embodiment is divided into two-stage separation, and airflow enters the first cyclonic separating unit 201 for first separation, and after the first separation the airflow enters the second cyclonic separating unit 202 for second separation.