Fan impeller system for configuring and constructing a fan impeller

Patent metadata

Field	Value
Publication number	US-11560898-B2
Application number	US-202117408444-A
Country	US
Kind code	B2
Filing date	Aug 22, 2021
Priority date	Aug 26, 2020
Publication date	Jan 24, 2023
Grant date	Jan 24, 2023

Abstract

A fan impeller system has a rotor element (10), a multiplicity of fan impeller blades (30) and a multiplicity of adapter elements (20). The rotor element (10) has a multiplicity of receptacles (11) that are evenly distributed in a circumferential direction (U) with an adapter element (20). The adapter element (20) is arranged between the respective fan impeller blade (30) and the respective receptacle (11). The adapter elements (20) may differ at least in their shape and/or dimensions. The fan impeller blades (30) may differ at least in their shape and/or dimensions.

First claim

What is claimed is:

1. A fan impeller system, comprising:
a rotor element, a multiplicity of fan impeller blades and a multiplicity of adapter elements;
the rotor element has a multiplicity of receptacles that are evenly distributed in its circumferential direction, a respective mounting surface of the receptacle is tilted relative to an imaginary plane that is arranged orthogonally to a central axis of rotation of the rotor element, an adapter element, from the multiplicity of adapter elements, can be arranged on each receptacle;
a fan impeller blade, from the multiplicity of fan impeller blades, can be respectively arranged on an adapter element, the adapter element is arranged between the respective fan impeller blade and the respective receptacle and the respective fan impeller blade is connected to the rotor element by the adapter element;
the adapter elements, from the multiplicity of adapter elements, are selected from a group of adapter element types that differ at least in their shape and/or dimensions, and the fan impeller blades, from the multiplicity of fan impeller blades, are selected from a group of fans impeller blade types that differ at least in their shape and/or dimensions;
and a fan impeller that is suitable for a predetermined application can be configured by selecting an adapter element type that is suitable for the application from the group of adapter element types and a fan impeller blade type that is suitable for the application from the group of fan impeller blade types is such that at least one of the adapter elements is different from the other adapter elements and can be constructed by mounting the adapter elements and the fan impeller blades on the rotor element.

2. The system as set forth in claim 1 , wherein the respective fan impeller blade can be releasably secured to the rotor element in a predetermined position and in a predetermined orientation by the adapter element, which can be arranged between the fan impeller blade and the rotor element.

3. The system as set forth in claim 1 , wherein the fan blades, from the multiplicity of fan blades, are of the same fan blade type, and the adapter element, from the multiplicity of adapter elements, are of the same adapter element type.

4. The system as set forth in claim 1 ,
wherein an adapter element with a fan impeller blade is respectively arranged on each of the receptacles of the rotor element,
or an adapter element with a fan impeller blade is respectively arranged on some of the receptacles of the rotor element,
and wherein the fan impeller blades are evenly distributed over the circumferential direction of the rotor element and are arranged thereon by at least the respective adapter element.

5. The system as set forth in claim 1 ,
wherein the adapter elements each have a blade side facing the respective fan impeller blade and a rotor side facing the respective receptacle,
and the blade side corresponds to a mounting surface of the respective fan impeller blade facing the respective adapter element and the rotor side corresponds to the respective mounting surface of the respective receptacle facing the respective adapter element.

6. The system as set forth in claim 5 ,
wherein the blade side of the adapter element and a reference plane orthogonal to an axis of rotation of the rotor element form a first angle between them, and the rotor side of the adapter element and the reference plane form a second angle between them,
and wherein the first and/or the second angle differ between adapter element types, and an angle of attack of the respective fan impeller blade on the rotor element is established by the first and/or second angle.

7. The system as set forth in claim 1 ,
further comprising a multiplicity of fastening elements, wherein a fastening element is provided on each fan impeller blade wherein the respective fan impeller blade can be connected to the respective adapter element and the respective receptacle.

8. The system as set forth in claim 7 ,
wherein the fastening element is formed by the respective receptacle or the respective fan impeller blade and secures the respective adapter element and the respective fan impeller blade on the rotor element,
or the fastening element is instantiated by the adapter element and has at least one first sub-element and at least one second sub-element, the first sub-element secures the respective fan impeller blade to the adapter element, and the second sub-element secures the adapter element to the receptacle.

9. The system as set forth in claim 1 ,
wherein the fan impeller blades each have an insert element that is designed to be brought to bear on the respective adapter element and secure the respective fan impeller blade with the adapter element and/or the rotor element.

10. A fan with a fan impeller constructed according to the system in claim 1 , and an electric motor that drives the fan impeller about an axis of rotation and has a stator and a rotor, the rotor of the electric motor arranged in the rotor element of the fan impeller and/or formed integrally therewith.

Assignees

• Ebm Papst Mulfingen Gmbh & Co Kg

Inventors

• Kosse Marcus
• Song Wenjie
• Cheng Eric
• Qin Raven
• Gruber Erhard

Classifications

• F04D19/002 Primary

  Axial flow fans · CPC title

• F04D29/181 Primary

  Axial flow rotors (F04D29/185 take precedence) · CPC title

• F04D25/0606

  the electric motor being specially adapted for integration in the pump · CPC title

• F04D29/329

  Details of the hub · CPC title

• F04D29/325 Primary

  for axial flow fans (blade mountings F04D29/34, blades F04D29/38) · CPC title