Cooling fan module

Patent metadata

Field	Value
Publication number	US-10989055-B2
Application number	US-201816190414-A
Country	US
Kind code	B2
Filing date	Nov 14, 2018
Priority date	Nov 15, 2017
Publication date	Apr 27, 2021
Grant date	Apr 27, 2021

Abstract

It is provided a cooling fan module having: a fan shroud; a fan propeller cutout, which is formed in the fan shroud; a motor mount which is mechanically connected to the fan shroud by means of struts which are located at the rear viewed in the flow direction; a motor, which is mounted at least partially in the motor mount; a fan propeller which is arranged in the fan propeller cutout and which is driven rotationally about a rotational axis R by the motor. The fan propeller has a plurality of blade elements. All the elements of a group which has at least one of the struts and at least one of the blade elements are forward-sickled or rearward-sickled.

First claim

What is claimed is:

1. A cooling fan module having:
a fan shroud defining a fan propeller cutout;
a motor mount mechanically connected to the fan shroud by means of struts located at a rear side of the fan shroud, relative to a flow direction;
a motor mounted at least partially in the motor mount; and
a fan propeller arranged in the fan propeller cutout and which is driven rotationally about a rotational axis by the motor, wherein the fan propeller has a plurality of blade elements, wherein at least all elements of a group which has at least one of the struts and at least one of the blade elements are forward-sickled or rearward-sickled and wherein a blade element mean line of the blade elements of the group and a strut mean line of the struts of the group in a profile section are related to one another by means of:

a
⁢

⁢
X
⁢

⁢
coordinate

=

f
⁡

(

α
S

⁡

(
n
)

,

α
R

,

D
H

,

L
P

,
n
,

β
S

⁡

(
n
)

,

β
R

⁡

(
n
)

)

=

sin
⁡

(

α

S
⁡

(
n
)

·

(

D
H

2

+

L
P

·
n

n
max

)

)

+

β
S

⁡

(
n
)

+

cos
⁡

(

α
S

⁡

(
n
)

+

α
R

2

)

·

L
P

·
n

n
max

·

2

·

1
-

cos
⁡

(

α
R

)

+

β
R

⁡

(
n
)

a
⁢

⁢
Y
⁢

⁢
coordinate

=

f
⁡

(

α
S

⁡

(
n
)

,

Assignees

• Brose Fahrzeugteile

Inventors

• Wichers Marco
• Smidt Joern
• Arnold Peter

Classifications

• F04D29/666 Primary

  by means of rotor construction or layout, e.g. unequal distribution of blades or vanes · CPC title

• F04D29/541

  Specially adapted for elastic fluid pumps (F04D29/56 takes precedence) · CPC title

• F04D29/325

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

• F01P5/02

  Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers · CPC title

• F04D29/384

  characterised by form · CPC title