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公开(公告)号：US12253090B2
公开(公告)日：2025-03-18
申请号：US18262488
申请日：2022-04-02
Applicant: Beijing Roborock Technology Co., Ltd.
Inventor： Yuanjian Liang , Changcheng Li , Zhimin Yang
Abstract: A fan includes a rotor; a stator; a first bearing assembly disposed at a radial outer side of an end of the rotor; and an impeller including an impeller body, where the impeller body is provided with a receiving cavity for receiving the first bearing assembly; and one end of the first bearing assembly is disposed in the receiving cavity, and the rotor, the first bearing assembly and the impeller body are disposed coaxially.
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公开(公告)号：US12209591B2
公开(公告)日：2025-01-28
申请号：US18015969
申请日：2021-06-17
Applicant: Beijing Roborock Technology Co., Ltd.
Inventor： Changcheng Li , Xing Li
Abstract: A fan and a cleaning apparatus. The fan comprises: a fluid module for generating and guiding an airflow, the fluid module comprising a diffuser which has a first positioning mechanism; and a stator module detachably connected to the diffuser, the stator module being provided with a second positioning mechanism adaptive to the first positioning mechanism. The fan uses a modular structure, is simple to assemble, and is suitable for mechanical production.
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公开(公告)号：US12199486B2
公开(公告)日：2025-01-14
申请号：US18022198
申请日：2021-09-03
Applicant: Beijing Roborock Technology Co., Ltd.
Inventor： Changcheng Li , Xing Li
Abstract: Disclosed are a stator and a fan. The stator comprises: an annular stator outer ring. A plurality of stator teeth which are uniformly distributed are connected in the circumferential direction of the inner side of the stator outer ring; the stator teeth are provided along the radial direction of the stator outer ring; a winding group coil is wound outside each stator tooth; the depths of first lead grooves of the insulating wire frames corresponding to the winding group coils in the same phase are the same, and depths of first lead grooves of the insulating wire frames corresponding to the winding group coils of different phases are different from each other, so that in the circumferential direction of the stator outer ring, the wires of different phases are staggered in height, and thus the wires of the phases of the stator are arranged in order.
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公开(公告)号：US12188476B2
公开(公告)日：2025-01-07
申请号：US18008978
申请日：2021-06-17
Applicant: Beijing Roborock Technology Co., Ltd.
Inventor： Changcheng Li , Xing Li
Abstract: A fan including: a motor stator; an axial diffuser, fixedly connected to the motor stator and comprising an outer cylinder, a main body portion disposed in the outer cylinder, and diffuser blades connected to the outer cylinder and the main body portion, the diffuser blades separating an annular space between the outer cylinder and the main body portion into more than one pressure diffusion ducts, the main body portion being provided with a central shaft hole; an air inlet cover, fixedly connected to the axial diffuser, the air inlet cover and the axial diffuser forming an impeller chamber and an annular no-gate channel around the impeller chamber, the annular no-gate channel communicating with the impeller chamber and the pressure diffusion ducts, and the air inlet cover being provided with an air inlet; and an impeller, disposed in the impeller chamber and used to introduce air from the air inlet.
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