Fan shroud for motor vehicle

Patent metadata

Field	Value
Publication number	US-10267209-B2
Application number	US-201615003260-A
Country	US
Kind code	B2
Filing date	Jan 21, 2016
Priority date	Jan 21, 2015
Publication date	Apr 23, 2019
Grant date	Apr 23, 2019

Abstract

A fan shroud assembly for a vehicle including a fan shroud for the vehicle which minimizes a noise generated by utilizing additional or supplemental flow spaces for smoothing air introduction to sections in which a vent hole of the shroud and a circumferential part of the shroud are adjacent each other.

First claim

What is claimed is:

1. A fan shroud assembly for a vehicle, the fan shroud assembly fixed to a heat exchanger in a rear direction of the vehicle to introduce cooling air into the heat exchanger, the fan shroud assembly comprising:
a fan;
a driving motor driving the fan; and
a shroud including a body having a vent hole providing a flow space formed at a center of the body, the shroud further including a plurality of stators extending radially inwardly from a surface forming the vent hole to a motor fixing part supporting the driving motor, wherein a supplemental flow space is formed between an outer peripheral edge of the body forming the vent hole and a circumferential part of the body, wherein an extension space is formed in the supplemental flow space where the outer peripheral edge and the circumferential part are adjacent each other and protrude toward the rear direction of the vehicle,
wherein the supplemental flow space forms the extension space, the supplemental flow space including a horizontal part linearly extending a first distance from the circumferential part of the body in a horizontal direction toward the rear of the vehicle, a vertical part linearly extending outwardly a second distance from the outer peripheral edge of the body forming the vent hole in a height direction of the vehicle or a width direction of the vehicle, and a first inclined part extending between and connecting the horizontal part to the vertical part, the first inclined part having a predetermined and constant curvature as the first inclined part extends between the horizontal part and the vertical part, wherein a distance the horizontal part extends in the horizontal direction is greater than a distance the first inclined part extends in the horizontal direction,
wherein a longest distance from the outer peripheral edge of the body forming the vent hole to the circumferential part of the body is defined as a first length, wherein a distance from the outer peripheral edge of the body forming the vent hole in a region where the supplemental flow space is formed to the circumferential part of the body is defined as a second length, and wherein the second length is 70% or less of the first length.

2. The fan shroud assembly according to claim 1 , wherein a plurality of supplemental flow spaces is formed in the body.

3. The fan shroud assembly according to claim 2 , wherein the plurality of supplemental flow spaces is formed in an upper part and a lower part of the body.

4. The fan shroud assembly according to claim 2 , wherein the plurality of supplemental flow spaces is formed in a first side part and a second side part of the body.

5. The fan shroud assembly according to claim 1 , wherein the first inclined part has a radius of curvature smaller than a radius of curvature of the body present between the circumferential part of the body and the outer peripheral edge of the body forming the vent hole.

6. The fan shroud assembly according to claim 5 , further comprising a pair of second inclined parts having a curvature and formed in a boundary region between the supplemental flow space and the body, wherein a first one of the pair of second inclined parts is formed at a first end of the supplemental flow space and a second one of the pair of second inclined parts is formed at a second end of the supplemental flow space.

7. The fan shroud assembly according to claim 2 , wherein a ratio between a horizontal length of the body in the width direction of the vehicle and a vertical length of the body in the height direction of the vehicle is 1:1.2 or less.

8. The fan shroud assembly according to claim 7 , wherein an angle formed by a straight line connecting a first end of one of the supplemental flow spaces and a center of the vent hole and a straight line connecting a second end of the one of the supplemental flow spaces and the center of the vent hole is between 30 and 80 degrees.

9. The fan shroud assembly according to claim 8 , wherein the one of the supplemental flow spaces is formed in one of an upper part of the body, a lower part of the body, a first side part of the body, and a second side part of the body.

10. The fan shroud assembly according to claim 2 , wherein a ratio between a horizontal length of the body in the width direction of the vehicle and a vertical length of the body in the height direction of the vehicle is greater than 1:1.2.

11. The fan shroud assembly according to claim 10 , wherein an angle formed by a straight line connecting a first end of one of the supplemental flow spaces formed in one of an upper part of the body and a lower part of the body and a center of the vent hole and a straight line connecting a second end of the one of the supplemental flow spaces formed in the one of the upper part of the body and the lower part of the body and the center of the vent hole is between 30 and 80 degrees, and wherein an angle formed by a straight line connecting a first end of one of the supplemental flow spaces formed in one of a left adjacent part of the body and a right adjacent part of the body and a center of the vent hole and a straight line connecting a second end of the one of the supplemental flow spaces formed in the one of the left adjacent part of the body and the right adjacent part of the body and the center of the vent hole is between 30 and 60 degrees.

12. The fan shroud assembly according to claim 1 , wherein a waveform part having a wave shape is formed adjacent the vertical part of the supplemental flow space.

13. The fan shroud assembly according to claim 12 , wherein the waveform part is inclined at a predetermined angle with respect to a flow direction of the cooling air.

14. The fan shroud assembly according to claim 1 , wherein a plurality of protrusions is formed on an inner wall of the supplemental flow space.

15. A fan shroud assembly for a vehicle, the fan shroud assembly fixed to a heat exchanger in a rear direction of the vehicle to introduce cooling air into the heat exchanger, the fan shroud assembly comprising:
a fan;
a driving motor driving the fan; and
a shroud including a body having a vent hole providing a flow space formed at a center of the body, the shroud further including a plurality of stators extending radially inwardly from a surface forming the vent hole to a motor fixing part supporting the driving motor, wherein a supplemental flow space is formed between an outer peripheral edge of the body forming the vent hole and a circumferential part of the body, wherein an extension space is formed in the supplemental flow space where the outer peripheral edge and the circumferential part are adjacent each other and protrude toward the rear direction of the vehicle,
wherein the supplemental flow space forms the extension space, the supplemental flow space including a horizontal part extending from the circumferential part of the body toward the rear of the vehicle and a vertical part extending outwardly from the outer peripheral edge of the body forming the vent hole in a height direction of the vehicle or a width direction of the vehicle,
wherein a waveform part is formed at an end of the vertical part, the waveform part including an inner surface having a wave shape as the inner surface extends in a circumferential direction thereof,
wherein a longest distance from the outer peripheral edge of the body forming the vent hole to the circumferential part of the body is defined as a first length, wherein a distance from the outer peripheral edge of the body forming the vent hole in a region where the supplemental flow space is formed to the circumferential part of the body is defined as

Assignees

• Hanon Systems

Inventors

• Kim Jun Ho
• Min Ok Ryul

Classifications

• F04D29/526

  Details of the casing section radially opposing blade tips (ducts F04D29/545) · CPC title

• F01P5/06 Primary

  Guiding or ducting air to, or from, ducted fans · CPC title

• F04D29/685

  Inducing localised fluid recirculation in the stator-rotor interface · CPC title

• F04D29/326

  comprising a rotating shroud · CPC title

• F01P2050/22

  Motor-cars · CPC title