Abrégé

A rotation driving mechanism (3) of an air supply apparatus, an air supply apparatus (10), and a household appliance (100). The rotation driving mechanism (3) of the air supply apparatus comprises: a fixed bracket (31); a rotary bracket (32), wherein the rotary bracket (32) is sleeved on the fixed bracket (31) and may rotate relative to the fixed bracket (31); and a driving member (41), wherein the driving member (41) is provided on the fixed bracket (31) and used for driving the rotary bracket (32) to rotate. Therefore, compared with the prior art, by means of the cooperation of the fixed bracket (31), the rotary bracket (32), and the driving member (41), the size of the rotation driving mechanism (3) can be reduced; after the rotation driving mechanism (3) is mounted on the air supply apparatus (10), the air supply apparatus (10) can have a better appearance; moreover, the rotation angle of the rotary bracket (32) relative to the fixed bracket (31) is not limited, and thus, the swinging angle of the rotary component of the air supply apparatus (10) can be expanded.

Classes IPC  ?

• F04D 25/10 - Ensembles comprenant des pompes et leurs moyens d'entraînement le fluide énergétique étant l'air, p.ex. pour la ventilation l'ensemble ayant le moyen de changer automatiquement la direction de l'air refoulé
• F16M 11/10 - Moyens pour la fixation des appareils; Moyens permettant le réglage des appareils par rapport au banc permettant la rotation autour d'un axe horizontal

Abrégé

A ceiling fan assembly (100) including a downrod (10); a ceiling fan (20) connected with a lower end of the downrod (10); a connector base (30) mounted to the downrod (10) and located above the ceiling fan (20); and a receiver (40) internally provided with a mounting groove (40a) penetrating the receiver (40) in an up-and-down direction, the receiver (40) being located at the periphery of a central axis of the downrod (10) and detachably connected with the connector base (30).

Classes IPC  ?

• F04D 29/64 - Montage; Assemblage; Démontage des pompes axiales

Abrégé

The present disclosure provides a ceiling fan blade structure and a ceiling fan. The ceiling fan blade structure includes: at least one fan blade provided with a first inserting portion; and a mounting plate provided with a second inserting portion, and being able to be detachably connected with the fan blade through a fit between the first inserting portion and the second inserting portion. The installation way of the fan blade is changed, and the connecting members used in the existing mounting method of fan blades are removed. The fan blade is provided with the first inserting portion, the mounting plate is provided with the second inserting portion, and through corresponding insertion between the first inserting portion and the second inserting portion, the fan blade may be mounted to the mounting plate rapidly. Thus, the ceiling fan blade structure is low in number of parts and low in cost. Moreover, in a mounting process of the fan blade, a mounting operation can be completed without assistance of auxiliary tools, and the mounting operation is simple and takes a short time.

Classes IPC  ?

• F04D 29/34 - Montage des ailettes
• F04D 25/08 - Ensembles comprenant des pompes et leurs moyens d'entraînement le fluide énergétique étant l'air, p.ex. pour la ventilation
• F04D 29/38 - Ailettes

Abrégé

The present disclosure provides a downrod assembly and a ceiling fan. The downrod assembly includes: an electric motor, an adapter subassembly and a downrod. The adapter subassembly is connected with an electric motor shaft of the electric motor; and the downrod is connected with the adapter subassembly and is capable of rotating with respect to the electric motor by means of the adapter subassembly. For the ceiling fan provided by the present disclosure, the downrod is able to rotate with respect to the electric motor, and the downrod is folded during transportation and handling to reduce the volume of the ceiling fan, thereby reducing the packaging volume. On the one hand, it is possible to avoid loss of small parts caused by detaching and packaging individual parts of the ceiling fan. On the other hand, it is possible to avoid an inconvenient handling and a low transport efficiency of the ceiling fan caused by a large volume of the downrod and the electric motor in the assembled ceiling fan. The volume of the ceiling fan is relatively small after the downrod rotates with respect to the electric motor, such that more ceiling fans can be transported without changing the space for transportation :n a transport device, thereby improving the transport efficiency, and moreover, manual handling may be convenient, thereby improving handling efficiency.

Classes IPC  ?

• F04D 29/00 - POMPES À DÉPLACEMENT NON POSITIF - Parties constitutives, détails ou accessoires
• F04D 25/06 - Ensembles comprenant des pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité
• F04D 25/08 - Ensembles comprenant des pompes et leurs moyens d'entraînement le fluide énergétique étant l'air, p.ex. pour la ventilation
• F04D 29/053 - Arbres
• F04D 29/054 - Dispositions pour le raccordement ou l'assemblage des arbres
• F24F 7/007 - Ventilation à écoulement forcé

Abrégé

A diffuser (10) includes a lower element (12) and an upper element (14). The upper element (14) is fixed on the lower element (12), and the upper element (14) and the lower element (12) are formed separately. The lower element (12) includes a lower inner wall (120) and a lower outer wall (122), and the upper element (14) includes an upper inner wall (140) and an upper outer wall (144). The upper inner wall (140) is connected to the lower inner wall (120) to form an internal air-guiding surface (16), the upper outer wall (142) is connected to the lower outer wall (122) to form an external air-guiding surface (18), and the internal air-guiding surface (16) is disposed opposite to the external air-guiding surface (18) to define an air-guiding channel (20) for air flow diffusion. The upper element (14) further includes an upper air-guiding wing (144) for connecting the upper inner wall (140) and the upper outer wall (142), and the lower element (12) further includes a lower air-guiding wing (124) for connecting the lower inner wall (120) and the lower outer wall (122). The upper air-guiding wing (144) is connected to the lower air-guiding wing (124) to form an air- guiding wing (22) for connecting the internal air-guiding surface (16) and the external air- guiding surface (18). Thus, fractures of the air-guiding wing due to a shrinkage strain thereof can be reduced, and the diffuser has a simple structure and is convenient to mount and detach. The present disclosure further provides a centrifugal compression power system and a bladeless fan.

Classes IPC  ?

• F04D 29/44 - Moyens de guidage du fluide, p.ex. diffuseurs