CN109681311B

CN109681311B - Engine cooling fan assembly

Info

Publication number: CN109681311B
Application number: CN201710975745.3A
Authority: CN
Inventors: 刘琳琳; 宋海鹏; 刘春艳; 王同斌
Original assignee: Bosch Automotive Components Changchun Co Ltd
Current assignee: Bosch Automotive Components Changchun Co Ltd
Priority date: 2017-10-19
Filing date: 2017-10-19
Publication date: 2021-07-30
Anticipated expiration: 2037-10-19
Also published as: CN109681311A

Abstract

The invention provides an engine cooling fan assembly, comprising: a shroud defining a shroud body having a central opening and first and second fan pockets adjoining the central opening of the shroud body; the air supply ring is connected to the middle opening of the housing and extends along at least one part of the inner edge of the middle opening, the air supply ring is communicated with the first fan containing cavity and the second fan containing cavity, and the air supply ring is provided with an air outlet extending along the length of the air supply ring; and the fan comprises a motor and a blade connected to an output shaft of the motor, the fan is arranged in the first fan containing cavity and the second fan containing cavity, and the fan conveys airflow to the air supply ring and sends the airflow out through the air outlet of the air supply ring when working. The engine cooling fan assembly has the characteristics of compact structure, convenient assembly, low noise and high efficiency.

Description

Engine cooling fan assembly

Technical Field

The invention relates to the technical field of engine cooling equipment, in particular to an engine cooling fan assembly.

Background

A conventional engine cooling fan assembly includes an electric motor, a housing, and fan blades. In operation, the motor drives the fan blades to rotate to provide cooling air to the engine. The entire engine cooling fan assembly is installed into the vehicle through features on the housing.

In recent years, the development of new energy automobiles is vigorous. Compared with the traditional engine, the traditional engine is cancelled in the new energy automobile, the bottom noise of the automobile is greatly reduced, the noise requirements on other automobile internal parts are gradually increased, and the engine cooling fan assembly with lower noise is expected to be provided.

Disclosure of Invention

It is an object of the present invention to solve or at least alleviate problems in the prior art;

according to one aspect, the present invention aims to provide an engine cooling fan assembly that is compact, easy to assemble or install;

according to one aspect, the present invention is directed to providing an engine cooling fan assembly that is low in noise, uniform in air supply, or safe to maintain;

according to an embodiment of the present invention, there is provided an engine cooling fan assembly including:

a shroud defining a shroud body having a central opening and first and second fan pockets adjoining the central opening of the shroud body;

the air supply ring is connected to the middle opening of the housing and extends along at least one part of the inner edge of the middle opening, the air supply ring is communicated with the first fan containing cavity and the second fan containing cavity, and the air supply ring is provided with an air outlet extending along the length of the air supply ring; and

the fan comprises a motor and a blade connected to an output shaft of the motor, the fan is arranged in the first fan containing cavity and the second fan containing cavity, and when the fan works, airflow is conveyed to the air supply ring and is sent out through the air outlet of the air supply ring.

Drawings

The principles of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, wherein:

FIG. 1 illustrates a front view of an engine cooling fan assembly according to an embodiment;

FIG. 2 illustrates a side rear view of an engine cooling fan assembly according to an embodiment;

FIG. 3 shows a cross-sectional view of a blower cavity according to an embodiment;

FIG. 4 illustrates a front side view of a fan and fan mount according to an embodiment;

FIG. 5 illustrates a rear side view of a fan and fan mount according to an embodiment; and

fig. 6 shows a cross-sectional view of a blower ring according to an embodiment.

Detailed Description

It is easily understood that according to the technical solution of the present invention, a person skilled in the art can propose various alternative structures and implementation ways without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as all of the present invention or as limitations or limitations on the technical aspects of the present invention.

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.

Referring first to fig. 1 and 2, there are shown different angled views of an engine cooling fan assembly according to an embodiment. The engine cooling fan assembly includes: the fan housing includes a housing defining a housing body 11 having a central opening 12 and first and

second fan pockets

14,15 adjacent the central opening 12 of the housing body 11. The housing body 11 may have a substantially plate shape, and may have a plurality of ribs on a surface thereof, including intersecting transverse ribs 111 and longitudinal ribs 112. The engine cooling fan assembly further comprises a blower ring 13, the blower ring 13 being connected to the central opening 12 of the housing and extending along at least a portion of the inner edge of the central opening 12. The air supply ring 13 is in communication with the first fan cavity 14 and the second fan cavity 15, the air supply ring 13 having an air outlet 135 extending along the length of the air supply ring. In addition, the engine cooling fan assembly further includes a fan disposed in the first and

second fan pockets

14 and 15, the fan including a motor 21 and a blade 41 connected to an output shaft of the motor. When the fan is in operation, the air flow is delivered to the air delivery ring 13 and is delivered out towards one side of the engine cooling fan assembly through the air outlet 135 of the air delivery ring. The air flow range and the air supply direction F are also shown in fig. 2.

For the housing, the entirety thereof may be integrally formed of a plastic material. As shown, the cover body 11 of the cover can be provided with a plurality of intersecting ribs to improve the strength of the entire cover body 11. The entire engine cooling fan assembly may be mounted to the vehicle by means of mounting

portions

16,17 at the edge of the housing body 11 of the housing such that the airflow delivered by the engine cooling fan assembly is directed towards the engine to cool the engine. In some embodiments, as best shown in fig. 1, the shroud including the shroud body 11 and the first and second fan pockets may have a generally rectangular shape with the mounting

portions

16,17 formed at the four corners of the shroud body 11. This structure is convenient for whole engine cooling fan subassembly to install to in the car.

A central opening 12 is formed in the middle of a cover body 11 of the cover. In the illustrated embodiment, the central opening 12 is circular, and in alternative embodiments, the central opening 12 may have other suitable shapes, such as oval, etc. In some embodiments, the blower ring 13 may extend the entire inner edge of the central opening 12, forming a circular or elliptical ring shape. The air ring 13 is connected to the inner edge of the central opening 12, for example snap-connected or glued to the inner edge of the central opening 12. The first and

second fan housings

14,15 communicate with the supply ring 13. In the illustrated embodiment, the first and

second fan housings

14,15 are diametrically opposed along the circular air feed ring 13, in other words, the first and

second fan housings

14,15 are substantially separated by a central angle of 180 degrees. In alternative embodiments, the first fan volume 14 and the second fan volume 15 may be arranged at other positions along the circumference.

As shown in fig. 2 and 3, in some embodiments the first blower housing 14 and/or the second blower housing 15 may be cylindrical to match the shape of the motor of the blower. In some embodiments, the first and/or

second blower housing

14,15 may have an open outer end 148, an inner end 147 in communication with the blower ring 13, and a sidewall 149 between the outer end 148 and the inner end 147. A plurality of ventilation holes 141 may be formed on the side walls 149 of the blower receiving chamber at both sides of the housing body 11 for supplying air. The vent 141 may also be used for positioning of the fan mount 31, as described below. In some embodiments, the first plenum 14 may have a pre-supply plenum 142 to cooperate with the supply ring 13, the pre-supply plenum 142 having a smaller cross-section.

Referring again to fig. 3-5, a fan and fan mount thereof according to one embodiment of the present invention is shown. The fan comprises a motor 21 and a blade 41 connected with a motor output shaft 211, wherein the blade 41 comprises a blade main body 411 and a blade outer ring 412, and the blade outer ring is designed to improve the efficiency of the blade 41. The blower is mounted in the

blower receiving chamber

14,15 by means of a blower mount 31. The blower support 31 is substantially cylindrical and is adapted to receive the motor 21 of the blower therein, and the outside of the blower support 31 and the inside of the blower receiving cavity have axially extending mating features, for example, the outside of the blower support 31 may have a pair of axially extending protrusions with slots 311 to mate with axially extending ribs on the inside of the first receiving cavity 14, such that the blower contained therein can be inserted into the blower receiving cavity 14 from the open outer end 148 of the blower receiving cavity 14. This engagement enables circumferential positioning of the fan support 31 in the fan housing 14, preventing rotation thereof. Further, in some embodiments, the blower support may also have resilient protrusions 313 on the outside thereof, for example, disposed at the ends of the T-shaped feature 312, the resilient protrusions 313 may fit into the vent holes 141 in the side wall 148 of the blower cavity to further position the blower support against axial sliding movement within the blower cavity. In addition, the fan bracket also has an opening 314 for heat dissipation of the motor. The blower bracket 31 may be integrally formed of plastic or the like.

In some embodiments, the engine cooling fan assembly may be symmetrical throughout along longitudinal axis a, such that, when installed, the entire engine cooling fan assembly is in equilibrium. In some embodiments, the blower housing is arranged such that the motor of the blower can be oriented horizontally, avoiding a tilted orientation of the blower. In the embodiment of the invention, the motor of each fan can adopt an EC (electrical communication) motor, and the EC motor has the characteristics of high intelligence, high energy conservation, high efficiency, long service life, good speed regulation performance and the like. The EC motor may enable intelligent operation of the fan, e.g. the EC motor may be able to adjust the rotational speed based on engine information, such as engine temperature and/or the EC motor may be able to feed back faults to the engine ECU etc.

Referring to fig. 6, there is shown the structure of the blowing ring 13 in cross section. The air ring 13 has a straight outer wall 131, a first inner wall 132 extending obliquely upward from a first end of the outer wall, the first inner wall 132 having a terminal inward curved hook 134, and a second inner wall 133 extending arcuately from a second end of the outer wall, a gap between the first inner wall 132 and the second inner wall 133 forming an air outlet 135 and defining an air outlet opening facing in a direction of the engine downstream of the engine cooling fan assembly, the air outlet opening 135 facing in a direction of the engine. The angles of the first inner wall 132 and the second inner wall 133 can be designed to fine-tune the orientation of the air outlet 135.

It should be understood that all of the above preferred embodiments are exemplary and not restrictive, and that various modifications and changes in the specific embodiments described above, which would occur to persons skilled in the art upon consideration of the above teachings, are intended to be within the scope of the invention.

Claims

1. An engine cooling fan assembly, comprising:

a shroud defining a shroud body (11) having a central opening (12) and first and second fan pockets (14, 15) adjacent to and arranged in spaced relation to the central opening (12) of the shroud body (11);

a blower ring (13), said blower ring (13) connected to a central opening (12) of said housing and extending along at least a portion of an inner edge of said central opening (12), said blower ring (13) in communication with said first and second blower pockets (14, 15), said blower ring (13) having an air outlet (135) extending along a length of said blower ring (13); and

a blower comprising a motor (21) and a blade (41) connected to an output shaft (211) of the motor, the blower being arranged in the first blower compartment (14) and the second blower compartment (15), respectively, the blower, when in operation, delivering an airflow into the blower ring (13) and out through the outlet opening (135) of the blower ring.

2. The engine cooling fan assembly of claim 1, characterized in that the central opening (12) of the casing is circular or oval, and the air supply ring (13) extends for the entire circumference of the central opening (12).

3. The engine cooling fan assembly of claim 2 wherein the first and second fan pockets (14, 15) are arranged at a central angle 180 degrees apart.

4. The engine cooling fan assembly of claim 1 wherein the first and/or second fan plenum (14, 15) is cylindrical having an open outer end (148), an inner end (147) in communication with the blower ring (13), and a sidewall (149) between the outer and inner ends (148, 147), the sidewall (149) having a plurality of vent holes (141) therein.

5. The engine cooling fan assembly according to claim 4, characterized in that the fan is mounted in the first fan receptacle (14) and/or the second fan receptacle (15) by a fan bracket (31), the outside of the fan bracket (31) and the inside of the first fan receptacle (14) and/or the second fan receptacle (15) having axially extending mating features such that the fan bracket (31) can be axially fitted into the first fan receptacle (14) and/or the second fan receptacle (15) from an open outer end (148) of the first fan receptacle (14) and/or the second fan receptacle (15).

6. Engine cooling fan assembly according to claim 5, characterized in that the fan bracket (31) also has a resilient projection (313) on the outside, the resilient projection (313) fitting into the ventilation hole (141) of the first and/or second fan receptacle (14, 15).

7. The engine cooling fan assembly of any of claims 1-6 wherein the engine cooling fan assembly is generally symmetrical along a longitudinal axis.

8. The engine cooling fan assembly of any of claims 1-6 wherein the shroud body (11) of the shroud is rectangular, the shroud body (11) of the shroud having mounts (16,17) at four corners.

9. The engine cooling fan assembly according to any of claims 1-6, characterized in that the electric machine (21) is an EC-motor, which can adjust the rotational speed based on engine information and/or which can feed back faults to the engine ECU.

10. The engine cooling fan assembly of any of claims 1-6, characterized in that the blower ring (13) has, in cross-section, a straight outer wall (131), a first inner wall (132) extending obliquely from a first end of the outer wall (131), the first inner wall (132) having a terminal inward-curved hook (135), and a second inner wall (133) extending arcuately from a second end of the outer wall, a gap between the first inner wall (134) and the second inner wall (133) forming the outlet opening (135) and defining the orientation of the outlet opening (135).

11. The engine cooling fan assembly of claim 5, wherein the mating features are slots (311) and ribs.

12. The engine cooling fan assembly of claim 9, wherein the engine information is an engine temperature.