CN213235567U

CN213235567U - Fan grille and fan

Info

Publication number: CN213235567U
Application number: CN202021248263.1U
Authority: CN
Inventors: 袁志杰; 五十住晋一; 相金波
Original assignee: Mitsubishi Heavy Industries Haier Qingdao Air Conditioners Co Ltd
Current assignee: Mitsubishi Heavy Industries Haier Qingdao Air Conditioners Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-05-18
Anticipated expiration: 2030-06-30

Abstract

The utility model provides a fan grid and fan. The fan grill includes: the first ribs are annular and arranged at intervals, the first ring is the smallest in diameter, the second ring is the largest in diameter, the second ribs are arc-shaped, the first rings extend towards the second rings from the first rings and bend towards the rotation direction of the fan along the extension direction, the intersection point of the second ribs and the first rings is a first point, the intersection point of the second ribs and the second rings is a second point, and the included angle formed by a connecting line between the first point and the axis of the fan and a connecting line between the second point and the axis of the fan is 80-100 degrees. The fan comprises the fan grille. The fan grille and the fan ensure the structural strength of the grille net, and the included angle formed by the connecting line between the first point and the axis of the fan and the connecting line between the second point and the axis of the fan is 80-100 degrees, so that the air outlet efficiency is effectively ensured, the noise of an air conditioner outdoor unit is reduced, and the vibration is reduced.

Description

Fan grille and fan

Technical Field

The utility model belongs to the technical field of air conditioning equipment, specificly relate to a fan grid and fan.

Background

Noise and vibration in air conditioners have been an important criteria for the quality of air conditioners. The high-efficiency fan of the outdoor unit can effectively reduce vibration, reduce noise and provide a comfortable environment for users. In the existing external unit fan, the protective net causes larger noise and larger vibration, and the air outlet efficiency is reduced.

Disclosure of Invention

The utility model aims at providing a fan grid and fan can effectively guarantee air-out efficiency for the outer machine noise of air conditioner is little, and the vibration is little.

The specific scheme is as follows:

a fan grill comprising:

the first ribs are annular and arranged at intervals, the first rib takes the rotating shaft of the fan as the center, the first rib has the smallest diameter and the second rib has the largest diameter,

a plurality of second ribs which are arc-shaped, extend from the first circular ring to the second circular ring and are bent along the extending direction to the rotating direction of the fan,

the intersection point of the second rib and the first circular ring is a first point, and the second rib and the first circular ring are connected in series

The intersection point of the second ring is a second point, and the connecting line of the first point and the fan axis and the connecting line of the second point and the fan axis form an included angle of 80-100 DEG

As a further optimization of the present invention, the first rib further comprises a third ring disposed between the first ring and the second ring

And the third ribs and the arcs with the same radian as the second ribs extend from the third circular ring to the second circular ring and are arranged between every two adjacent second ribs.

As the utility model discloses a further optimization, first rib is including the first end that is close to fan one end to and keep away from the second end of fan one end, the first end is the circular arc of first diameter, the second end is the circular arc of second diameter, first diameter is less than the second diameter.

As a further optimization of the present invention, the ratio of the length of the first rib along the axial direction of the fan to the second diameter is 2.5-3.5.

As a further optimization of the present invention, the length of the first rib along the axial direction of the fan and the ratio of the second diameter are 3.

As the utility model discloses a further optimization, the second rib is including the third end that is close to fan one end to and keep away from the fourth end of fan one end, the third end is the circular arc of third diameter, the fourth end is the circular arc of fourth diameter, the third diameter is less than the fourth diameter.

As a further optimization of the present invention, the ratio of the length of the second rib along the axial direction of the fan to the fourth diameter is 1.5-2.5.

As a further optimization of the present invention, the ratio of the length of the second rib along the axial direction of the fan to the fourth diameter is 1.8.

A fan comprising a fan grill as described in any one of the above.

Has the advantages that: fan grid, its setting through first rib and second rib, at first guaranteed the structural strength of grid net, simultaneously, the curved setting of second rib to and through being 80-100 with the contained angle that the connecting wire in first point and fan axle center and second point and the connecting wire in fan axle center constitute, flow direction and the shape of the air current when rotatory with the fan are close, thereby the effectual air-out efficiency of having guaranteed, and reduced the noise of the outer machine of air conditioner, reduce vibrations, through experimental, compare in current fan grid, fan grid under the same fan rotational speed, the period air output has promoted at least 2.2%.

Drawings

FIG. 1 is a schematic structural view of a fan grill according to the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a partially enlarged view of fig. 2 at B.

In the above figures, 1, a first rib; 11. a first circular ring; 12. a second circular ring; 13. a third circular ring; 14. a first end; 15. a second end; 2. a second rib; 3. a third rib; 4. a first point; 5. and a second point.

Detailed Description

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

As shown in fig. 1 to 3, this embodiment provides a fan grill including:

the first ribs 1 are annular and arranged at intervals by taking the rotating shaft of the fan as the center, wherein the smallest diameter is a first circular ring 11, the largest diameter is a second circular ring 12,

a plurality of second ribs 2 which are arc-shaped, extend from the first ring 11 to the second ring 12, and bend along the extending direction to the rotating direction of the fan,

the intersection point of the second ribs 2 and the first circular ring 11 is a first point 4, the intersection point of the second ribs 2 and the second circular ring 12 is a second point 5, and the included angle formed by a connecting line between the first point 4 and the axis of the fan and a connecting line between the second point 5 and the axis of the fan is 80-100 degrees

Fan grid, it is through the setting of first rib 1 and second rib 2, at first guaranteed the structural strength of grid net, simultaneously, the curved setting of second rib 2 to through being 80-100 with the contained angle that the connecting wire in first point 4 and fan axle center and second point 5 and the connecting wire in fan axle center constitute, flow direction and the shape of the air current when rotatory with the fan are close, thereby effectual air-out efficiency of having guaranteed, and reduced the outer machine's of air conditioner noise, reduce vibrations, through experimental, compare in current fan grid, the utility model discloses a fan grid is under the same fan rotational speed, and the phase air output has promoted at least 2.2%.

With further reference to fig. 1, the first ribs further comprise a third ring 13 disposed between the first ring and the second ring, and further comprise

Third rib 3, with the arc that 2 radians of second rib are the same, by third ring 13 extends to second ring 12, locates adjacent two between the second rib 2, the aforesaid sets up the effectual density that increases curved rib in the grid net to the effectual structural strength who guarantees whole grid net, and third rib 3 can not influence the air-out yet.

Further, first rib 1 is including the first end 14 that is close to fan one end to and keep away from the second end 15 of fan one end, first end 14 is the circular arc of first diameter, second end 15 is the circular arc of second diameter, first diameter is less than the second diameter, first rib 1 along fan axial direction's length with the ratio of second diameter is 2.5-3.5, in this embodiment, first rib 1 along fan axial direction's length with the ratio of second diameter is 3, above-mentioned setting for the grid muscle design is on the basis of guaranteeing to accord with ann rule and injection mold technology, and effectual reduction cross-section air current drops, has reduced the air current energy loss, thereby effectual noise reduction and vibrations, guarantee air-out efficiency.

Further, second rib 2 is including the third end that is close to fan one end to and keep away from the fourth end of fan one end, the third end is the circular arc of third diameter, the fourth end is the circular arc of fourth diameter, the third diameter is less than the fourth diameter, the ratio of the length of second rib along fan axial direction and fourth diameter is 1.5-2.5, in this case, the ratio of the length of second rib along fan axial direction and fourth diameter is 1.8, above-mentioned setting for the design of second rib can guarantee to accord with the requirement of ann's rule and injection mold technology, and can also effectual reduction cross-section air current drops, has reduced the air current energy loss, thereby effectual noise reduction and vibrations guarantee air-out efficiency.

Furthermore, the utility model also provides a fan, include as in above arbitrary fan grid, fan, including above-mentioned fan grid, it is through the setting of first rib 1 and second rib 2, at first guaranteed the structural strength of grid net, simultaneously, the curved setting of second rib 2 to through the contained angle that constitutes the connecting wire in first point 4 and fan axle center and second point 5 and the connecting wire in fan axle center be 80-100, flow direction and the shape of the air current when rotatory with the fan are close, thereby the effectual air-out efficiency of having guaranteed, and reduced the noise of the outer machine of air conditioner, reduce vibrations, compare in current fan grid through experimental, the utility model discloses a fan grid is under the same fan speed, the phase air output has promoted 2.2 at least.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A fan grill, comprising:

the intersection point of the second ribs and the first ring is a first point, the intersection point of the second ribs and the second ring is a second point, and the included angle formed by a connecting line of the first point and the axis of the fan and a connecting line of the second point and the axis of the fan is 80-100 degrees.

2. The fan grill according to claim 1, wherein the first ribs further include a third ring disposed between the first ring and the second ring, and further include third ribs having an arc shape with the same arc shape as the second ribs, extending from the third ring to the second ring, and disposed between two adjacent second ribs.

3. The fan grill of claim 2, wherein the first ribs include a first end proximate to an end of the fan and a second end distal from the end of the fan, the first end being an arc of a first diameter and the second end being an arc of a second diameter, the first diameter being less than the second diameter.

4. The fan grill of claim 3, wherein a ratio of a length of the first ribs in an axial direction of the fan to the second diameter is 2.5-3.5.

5. The fan grill of claim 4, wherein a ratio of a length of the first ribs in an axial direction of the fan to the second diameter is 3.

6. The fan grill of claim 5, wherein the second ribs include a third end proximate to an end of the fan, the third end being an arc of a third diameter, and a fourth end distal from the end of the fan, the fourth end being an arc of a fourth diameter, the third diameter being less than the fourth diameter.

7. The fan grill of claim 6, wherein a ratio of a length of the second ribs in an axial direction of the fan to the fourth diameter is 1.5-2.5.

8. The fan grill of claim 7, wherein a ratio of a length of the second ribs in an axial direction of the fan to the fourth diameter is 1.8.

9. A fan comprising a fan grill as claimed in any one of claims 1 to 8.