CN116201764A - Fan subassembly and have its air condensing units - Google Patents

Abstract

The invention discloses a fan assembly and an air conditioner outdoor unit with the same, wherein the fan assembly comprises: the wind wheel comprises a wheel hub and blades, the wheel hub comprises an annular portion and a blocking portion, the blades are arranged on the peripheral wall of the annular portion, the blocking portion is arranged at one axial end of the air inlet side of the annular portion to block an opening of the annular portion, a plurality of flow guide ribs which are spaced along the circumferential direction of the blocking portion are arranged on the surface of the air inlet side of the blocking portion, and the flow guide ribs extend from the center of the blocking portion to the outer periphery of the wheel hub. According to the fan assembly, the blocking part is arranged on the air inlet side of the hub and can block the opening of the air inlet side of the annular part, so that the groove in the annular part can be covered, in addition, the flow guide rib extending from the center of the blocking part towards the edge of the blocking part is arranged on the surface of the air inlet side of the blocking part, so that the air flow on the air inlet side of the hub can be favorably guided to the blades, and then flows to the air outlet side of the wind wheel under the action of the blades, and the efficiency of the wind wheel and the motor can be favorably improved.

Description

Fan subassembly and have its air condensing units

Technical Field

The invention relates to the technical field of air treatment equipment, in particular to a fan assembly and an air conditioner outdoor unit with the same.

Background

In the related art, the fan assembly comprises a wind wheel, the wind wheel comprises a hub and blades arranged on the peripheral wall of the hub, a groove and other structures are arranged on the air inlet side of the hub, in the working process of the fan assembly, partial air flow can enter the groove to generate vortex and the like in the groove, so that the output value of a motor is increased, and the efficiency of the wind wheel and the motor is reduced.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the fan assembly, which has higher efficiency.

The invention also provides an air conditioner outdoor unit which comprises the fan assembly.

According to an embodiment of the invention, a fan assembly includes: the wind wheel comprises a wheel hub and blades, wherein the wheel hub comprises an annular portion and a blocking portion, the blades are arranged on the peripheral wall of the annular portion, the blocking portion is arranged at one axial end of the air inlet side of the annular portion to block one opening of the annular portion, a plurality of flow guide ribs which are spaced in the circumferential direction of the blocking portion are arranged on the air inlet side surface of the blocking portion, and the flow guide ribs extend from the center of the blocking portion to the peripheral edge of the wheel hub.

According to the fan assembly provided by the embodiment of the invention, the blocking part is arranged on the air inlet side of the hub and can block the opening of the air inlet side of the annular part, so that the groove in the annular part can be covered, the air flow flowing through the hub is prevented from rotating in the groove, the air flow is facilitated to flow to the blades along the surface of the air inlet side of the blocking part, and then flows to the air outlet side of the wind wheel under the action of the blades. In addition, set up the water conservancy diversion muscle that extends towards the edge of blocking portion by the center of blocking portion on the air inlet side's of blocking portion surface, be favorable to guiding the air current of wheel hub air inlet side to blade department to flow to the air-out side of wind wheel under the effect of blade, and then be favorable to improving the efficiency of wind wheel and motor.

According to some embodiments of the invention, the deflector bars are inclined in a radially outward direction towards a direction opposite to the direction of rotation of the rotor.

In some embodiments of the invention, the deflector bars extend in an arc.

In some embodiments of the invention, the deflector rib is formed from a plurality of arcuate segments of differing curvature.

In some embodiments of the invention, the curvature of a plurality of said arcuate segments decreases progressively in a radially outward direction.

According to some embodiments of the invention, the thickness of the ribs is equal or gradually decreasing in a radially outward direction.

According to some embodiments of the invention, the height of the ribs is equal or gradually increasing in a radially outward direction.

According to some embodiments of the invention, an auxiliary rib is further arranged between two adjacent guide ribs, the auxiliary rib extends from the center of the blocking portion towards the outer periphery of the blocking portion, and the radially inner end of the auxiliary rib is located radially outside the radially inner end of the guide rib.

In some embodiments of the invention, the auxiliary bead has the same inclination tendency as the deflector bead in a radially outward direction.

According to some embodiments of the invention, the air inlet side surface of the blocking portion is a plane perpendicular to the central axis of the hub, or the air inlet side surface of the blocking portion is inclined towards the air outlet side of the wind wheel in a centre-to-outer peripheral direction.

According to some embodiments of the invention, the fan assembly further comprises a motor, the motor is located on the air inlet side of the hub and connected with the hub, and the blocking part is provided with a avoiding hole for avoiding an output shaft of the motor.

In some embodiments of the present invention, a boss is disposed on a side of the motor facing the hub, the output shaft is disposed on the boss, and a portion of the boss is located in the avoidance hole.

In some embodiments of the invention, an outer edge of the air intake side surface of the blocking portion is flush with an edge of the annular portion proximate the air intake side.

The outdoor unit of the air conditioner comprises the fan assembly.

According to the air conditioner outdoor unit provided by the embodiment of the invention, the fan assembly is arranged on the air inlet side of the hub, the blocking part is used for blocking the opening of the air inlet side of the annular part, so that the groove in the annular part can be covered, the air flow flowing through the hub is prevented from rotating in the groove, the air flow is facilitated to flow to the blades along the surface of the air inlet side of the blocking part, and then flows to the air outlet side of the wind wheel under the action of the blades. In addition, set up the water conservancy diversion muscle that extends towards the edge of blocking portion by the center of blocking portion on the air inlet side's of blocking portion surface, be favorable to guiding the air current of wheel hub air inlet side to blade department to flow to the air-out side of wind wheel under the effect of blade, and then be favorable to improving the efficiency of wind wheel and motor.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a perspective view of a fan assembly according to an embodiment of the present invention;

FIG. 2 is a perspective view of a fan assembly with a motor omitted, according to an embodiment of the present invention;

FIG. 3 is a perspective view of a seal of a fan assembly according to an embodiment of the present invention;

FIG. 4 is a front view of a seal of a fan assembly according to an embodiment of the present invention;

FIG. 5 is a front view of a fan assembly according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

fig. 7 is an enlarged view at B in fig. 6;

FIG. 8 is a perspective view of a motor of a fan assembly according to an embodiment of the present invention;

FIG. 9 is another angular perspective view of a seal of a fan assembly according to an embodiment of the present invention;

FIG. 10 is a perspective view of a portion of the structure of a fan assembly according to an embodiment of the present invention;

fig. 11 is an enlarged view at C in fig. 10.

Reference numerals:

100. a fan assembly;

1. a wind wheel; 11. a hub; 111. an annular portion; 112. a blocking part; 1121. a flow guiding rib; 1122. avoidance holes; 1123. A positioning pin; 1124. a protrusion; 113. a cover part; 114. a connection part; 115. a connecting rib; 1151. a notch; 1152. Positioning columns; 1153. positioning holes; 12. a blade;

2. a motor; 21. a boss; 22. an output shaft.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

A fan assembly 100 according to an embodiment of the present invention is described below with reference to the drawings.

As shown in fig. 1 and 2, a fan assembly 100 according to an embodiment of the present invention includes a wind wheel 1.

Specifically, the wind turbine 1 includes a hub 11 and blades 12, the hub 11 includes an annular portion 111 and a blocking portion 112, the blades 12 are provided on an outer peripheral wall of the annular portion 111, the blades 12 may be a plurality of evenly spaced apart along a circumferential direction of the annular portion 111, for example, as shown in fig. 1, the blades 12 are three spaced apart along the circumferential direction of the annular portion 111. Wherein the annular portion 111 and the blade 12 may be one piece, alternatively the annular portion 111 and one piece may be integrally injection molded.

The annular portion 111 is formed into a tube-shape, two ends of the axial direction of the annular portion 111 are open, a connecting portion 114 for connecting the motor 2 can be arranged in the annular portion 111, connecting ribs 115 can be arranged between the outer peripheral wall of the connecting portion 114 and the inner peripheral wall of the annular portion 111 and used for realizing connection between the connecting portion 114 and the annular portion 111, grooves are formed between two adjacent connecting ribs 115, the inner wall of the annular portion 111 and the outer wall of the connecting portion 114, in the working process of the fan assembly 100, air flows from the air inlet side to the air outlet side of the wind wheel 1, partial air flows in the grooves in the flowing process of the air flow, and vortex is formed in the grooves, so that the output value of the motor 2 is increased, and the efficiency of the wind wheel 1 and the motor 2 is reduced. According to the air inlet type wind turbine rotor and motor 2, the blocking part 112 is arranged at one axial end of the air inlet side of the annular part 111 to block the opening of the annular part 111, so that the groove structure in the annular part 111 can be blocked, the air flow is prevented from flowing into the groove, and the efficiency of the wind turbine 1 and the motor 2 is improved.

Further, as shown in fig. 2 and 3, a plurality of guide ribs 1121 are provided on the air intake side surface of the blocking portion 112, spaced apart in the circumferential direction of the blocking portion 112, the guide ribs 1121 extending from the center of the blocking portion 112 toward the outer periphery of the hub 11. The deflector rib 1121 facilitates guiding the air flow at the hub 11 to the radially outer side of the hub 11, thereby being directed to the air outlet side by the blades 12.

As shown in fig. 1, the fan assembly 100 includes a motor 2, the motor 2 is located on the air inlet side of the wind wheel 1, and an output shaft 22 of the motor 2 is connected with the hub 11 to drive the wind wheel 1 to rotate. When the fan assembly 100 is applied to an outdoor unit of an air conditioner, a part of air flowing in from a heat exchanger of the outdoor unit passes through the outer circumferential wall of the motor 2, a part of air passing through the outer circumferential wall of the motor 2 flows to the blades 12 of the wind wheel 1, flows to the air outlet side of the wind wheel 1 under the action of the blades 12, and a part of air flows into a gap between the motor 2 and the hub 11 and flows in a whirling manner between the motor 2 and the hub 11, so that the output value of the motor 2 is increased, and the efficiency of the wind wheel 1 and the motor 2 is reduced. The air current that the present application set up 1121 is favorable to radially discharging the whirl between motor 2 and the wheel hub 11 to blade 12 department, flows into the air-out side through the effect of blade 12, is favorable to improving the efficiency of wind wheel 1 and motor 2.

According to the fan assembly 100 of the embodiment of the present invention, the blocking portion 112 is disposed on the air inlet side of the hub 11, and the blocking portion 112 blocks the opening of the air inlet side of the annular portion 111, so that the groove in the annular portion 111 can be covered, and the air flow flowing through the hub 11 is prevented from rotating in the groove, so that the air flow is facilitated to flow to the blades 12 along the air inlet side surface of the blocking portion 112, and thus flows to the air outlet side of the wind wheel 1 under the action of the blades 12. In addition, the surface of the air inlet side of the blocking portion 112 is provided with the flow guiding rib 1121 extending from the center of the blocking portion 112 towards the edge of the blocking portion 112, which is beneficial to guiding the air flow of the air inlet side of the hub 11 to the blades 12, so that the air flows to the air outlet side of the wind wheel 1 under the action of the blades 12, and further, the efficiency of the wind wheel 1 and the motor 2 is beneficial to being improved.

In some embodiments of the invention, as shown in fig. 2-4, the deflector ribs 1121 are inclined in a radially outward direction towards the opposite direction to the direction of rotation of the rotor 1. For example, in the example shown in fig. 2 to 4, the hub 11 rotates in the clockwise direction shown in fig. 4 (W direction shown in fig. 1 and 4), and the blades 12 are driven to rotate in the clockwise direction, the driving airflow flows from the intake side to the exhaust side (upper side to lower side shown in fig. 1) of the wind wheel 1, and the ribs 1121 are inclined in the radially outward direction, that is, in the direction from the center to the outer periphery of the blocking portion 112, in the direction opposite to the rotation axis of the wind wheel 1 (V direction shown in fig. 1 and 4). Therefore, in the process of rotating the wind wheel 1, the load born by the blades 12 can be reduced, the swirling airflow at the hub 11 is conveniently guided to the radial outer side of the hub 11, and the airflow at the hub 11 conveniently flows to the wind outlet side of the wind wheel 1 through the blades 12, so that the efficiency of the wind wheel 1 and the motor 2 is improved.

Further, as shown in fig. 3 and 4, the guide rib 1121 extends in an arc shape, and the guide rib 1121 is in an arc shape protruding toward the rotational direction of the wind wheel 1. Therefore, the load borne by the blades 12 can be further reduced, the swirling airflow at the hub 11 is more beneficial to guiding the swirling airflow at the hub 11 to the radial outer side of the hub 11, and the airflow at the hub 11 conveniently flows to the air outlet side of the wind wheel 1 through the blades 12, so that the efficiency of the wind wheel 1 and the motor 2 is improved.

Alternatively, the guide rib 1121 extends along an arc shape, which may be a circular arc shape or an elliptical arc shape, or the like, and in the example shown in fig. 3 and 4, the guide rib 1121 extends along a circular arc shape with the same curvature of the guide rib 1121 in a radially outward direction.

Of course, the present invention is not limited thereto, and the guide rib 1121 is composed of a plurality of arc-shaped segments having different curvatures. It will be appreciated that the deflector rib 1121 includes a plurality of arcuate segments connected in series in a radially outward direction, the arcuate segments having different curvatures. Therefore, the length of the guide rib 1121 can be increased, when the diameter of the hub 11 is increased, the guide rib 1121 can be arranged better, the shape of the guide rib 1121 is more favorable for the discharge of the swirling air flow at the hub 11, and the efficiency of the wind wheel 1 and the motor 2 is improved.

Alternatively, the number of arcuate segments may be 2 or 3.

Further, when the deflector rib 1121 includes a plurality of arcuate segments, the curvature of the plurality of arcuate segments gradually decreases in the radially outward direction. It will be appreciated that the arcuate segments located radially innermost have the greatest curvature, the smallest radius, and the arcuate segments located radially outermost have the smallest curvature and the largest radius. Thereby can be favorable to increasing the length of water conservancy diversion muscle 1121 more, when wheel hub 11 diameter increases, be convenient for better setting water conservancy diversion muscle 1121 to can make the shape of water conservancy diversion muscle 1121 more be favorable to the discharge of wheel hub 11 department whirl air current, be favorable to improving the efficiency of wind wheel 1 and motor 2.

In some embodiments of the present invention, as shown in fig. 4, the thickness of the guide rib 1121 is equal in the radial outward direction, so that the structure and the processing process of the guide rib 1121 can be simplified, and the production efficiency can be improved. Of course, the present invention is not limited thereto, and the thickness of the guide rib 1121 may be gradually reduced in the radial outward direction to form an airfoil shape, thereby increasing structural diversity of the guide rib 1121, satisfying different use requirements, and in addition, the guide rib 1121 of the airfoil shape may facilitate the discharge of the air flow.

In some embodiments of the invention, as shown in fig. 5-7, the height of the ribs 1121 are equal in a radially outward direction. The height of the guide rib 1121 is not simply based on the air inlet side surface of the blocking portion 112 where the guide rib 1121 is disposed, that is, the height from the fixed end to the free end of the guide rib 1121, but based on a plane perpendicular to the central axis of the hub 11, and the reference plane is located on one side of the guide rib 1121 facing the air outlet side of the wind wheel 1, and the distance between the free end of the guide rib 1121 and the reference plane is a height value. Thereby facilitating the discharge of the swirling air flow at the hub 11 to the radially outer side of the hub 11, reducing the load of the motor 2 and facilitating the improvement of the efficiency of the wind wheel 1 and the motor 2.

For example, in the example shown in fig. 5 to 7, the air intake side is located on the air outlet side as shown in fig. 7, the blocking portion 112 is provided on the upper side of the annular portion 111, the upper surface of the blocking portion 112 is the air intake side surface, the guide rib 1121 is provided on the upper surface of the blocking portion 112, the upper ends of the guide rib 1121 are flush, and even if the lower ends of the guide rib 1121 are not flush, the upper ends of the guide rib 1121 are the same distance from the reference plane located on the lower side of the guide rib 1121 and perpendicular to the central axis of the hub 11, and therefore, the height of the guide rib 1121 is the same in the radially outward direction.

Of course, the present invention is not limited thereto, and the height of the guide rib 1121 may be gradually increased in the radially outward direction. Compared with the inflow side (the radial inner side of the flow guiding rib 1121) of the air flow, the workload of the outflow side (the radial outer side of the flow guiding rib 1121) is larger, so that the height of the flow guiding rib 1121 is gradually increased in the radial outward direction, the air flow at the hub 11 is discharged, and the power of the wind wheel 1 and the power of the motor 2 are improved.

In some embodiments of the present invention, an auxiliary rib is further disposed between two adjacent guide ribs 1121, the auxiliary rib extending from the center of the blocking portion 112 toward the outer periphery of the blocking portion 112 and a radially inner end of the auxiliary rib being located radially outward of the radially inner end of the guide rib 1121. Therefore, the inflow area of the inflow side of the guide ribs 1121 can be ensured, the stripping of the air flow between the two guide ribs 1121 at the radial outer side of the guide ribs 1121 can be avoided, the discharge of the air flow at the hub 11 is facilitated, and the power of the wind wheel 1 and the power of the motor 2 are improved.

Further, in the radially outward direction, the auxiliary bead has the same inclination tendency as the deflector bead 1121. Thereby facilitating the evacuation of the air flow at the hub 11 and facilitating the increase of the power of the rotor 1 and the motor 2. When the guide rib 1121 is inclined in the radially outward direction toward the direction opposite to the rotational direction of the wind wheel 1, the auxiliary rib is also inclined in the radially outward direction toward the direction opposite to the rotational direction of the wind wheel 1.

The thickness variation trend of the auxiliary rib may be the same as that of the guide rib 1121, and in the case where the thicknesses of the guide ribs 1121 are equal in the radially outward direction, the thicknesses of the auxiliary ribs are also equal. In the case where the thickness of the guide rib 1121 is gradually increased in the radially outward direction, the thickness of the auxiliary rib is also gradually increased. Further, the thickness of the guide rib 1121 and the auxiliary rib on the same circle is the same on the basis of the center axis of the hub 11 as the center.

In addition, the height variation trend of the auxiliary rib may be the same as the height variation trend of the guide rib 1121, and in the case where the heights of the guide ribs 1121 are equal in the radially outward direction, the heights of the auxiliary ribs are also equal. In the case where the height of the guide rib 1121 is gradually increased in the radially outward direction, the height of the auxiliary rib is also gradually increased. Further, the height of the guide rib 1121 and the auxiliary rib on the same circle is the same on the basis of the center axis of the hub 11 as the center.

In some embodiments of the invention, as shown in fig. 7, the air inlet side surface of the blocking portion 112 is inclined towards the air outlet side of the rotor 1 in the direction from the centre to the outer periphery. For example, in the radially outward direction of the blocking portion 112, the air intake side surface of the blocking portion 112 is inclined downward as shown in fig. 7, and the air intake side surface of the blocking portion 112, i.e., the upper surface center of the blocking portion 112 as shown in fig. 7, is protruded. Because the air flow has the characteristic of flowing from the place with high pressure to the place with low pressure, the closer to the center of the rotating shaft, the lower the pressure is, so that the center position of the surface of the air inlet side of the blocking part 112 protrudes, and the air flow is discharged conveniently.

Of course, the present invention is not limited thereto, and the air inlet side surface of the blocking portion 112 is a plane perpendicular to the central axis of the hub 11, thereby simplifying the structure and processing process of the blocking portion 112 and improving the production efficiency.

In some embodiments of the present invention, as shown in fig. 1, the fan assembly 100 further includes a motor 2, where the motor 2 is located on the air inlet side of the hub 11 and is connected to the hub 11, and the blocking portion 112 is provided with a avoidance hole 1122 for avoiding the output shaft 22 of the motor 2. Thereby facilitating connection of the output shaft 22 of the motor 2 to the hub 11 through the relief hole 1122. Of course, the invention is not limited thereto, and the motor 2 may also be located on the wind outlet side of the wind wheel 1.

Further, as shown in fig. 7 and 11, the hub 11 further includes a connection portion 114, the connection portion 114 being provided in the annular portion 111, a plurality of connection ribs 115 being provided between an outer peripheral wall of the connection portion 114 and an inner peripheral wall of the annular portion 111, the connection ribs being spaced apart in a circumferential direction of the connection portion 114, thereby achieving connection between the connection portion 114 and the annular portion 111. When the motor 2 drives the connection part 114 to rotate, the connection part 114 drives the annular part 111 to rotate, and the annular part 111 drives the blades 12 to rotate.

As shown in fig. 7 and 11, the lower end surface of the connection rib 115 is flush with one end of the axis of the annular portion 111 facing away from the air intake side, and one end of the connection rib 115 near the air intake side is inclined in a radially inward direction toward the air outlet side of the wind wheel 1. The end of the connection portion 114 facing the air intake side is flush with the radially inner end of the connection rib 115.

Further, as shown in fig. 7 and 8, a boss 21 is provided on a side of the motor 2 facing the hub 11, an output shaft 22 is provided on the boss 21, and a portion of the boss 21 is located in the avoidance hole 1122. The radial distance between the avoidance holes 1122 and the motor 2 can be further reduced, so that the air flow is not easy to enter between the motor 2 and the hub 11, the amount of air flowing into the center of the output shaft 22 of the motor 2 can be reduced, and the structure (the guide rib 1121) for discharging the air can be provided, so that the air can flow to the outside, which is beneficial to improving the efficiency of the wind wheel 1 and the motor 2.

It will be appreciated that, from the aspect of air flow, the center of the output shaft 22 of the motor 2 is the portion with the lowest pressure, and if the radial distance between the inner peripheral wall of the avoidance hole 1122 and the motor 2 is large, the air flow discharged from the air inlet side end surface of the blocking portion 112 will generate swirl while generating swirl in the gap between the inner peripheral wall of the avoidance hole 1122 and the motor 2. The boss 21 extends into the avoidance hole 1122, so that the distance between the inner peripheral wall of the avoidance hole 1122 and the outer peripheral wall of the boss 21 can be reduced on the premise that the aperture of the avoidance hole 1122 is fixed, air is not easy to enter, and the generation of whirling vortex can be reduced.

In some embodiments of the present invention, as illustrated in fig. 9, protrusions 1124 are provided on the leeward side surface of the blocking portion 112, and the avoidance holes 1122 are provided through the protrusions 1124. The radially inner end of the connecting rib 115 has a notch 1151, and a portion of the boss 21 is located in the notch 1151.

In some embodiments of the present invention, as shown in fig. 6 and 7, the hub 11 further includes a cover portion 113, the cover portion 113 being provided at an end of the annular portion 111 remote from the blocking portion 112 and blocking another open mouth of the annular portion 111. Wherein the cover portion 113 is connected with the annular portion 111 and is an integral piece, whereby the structural strength of the hub 11 can be increased.

In some embodiments of the invention, as shown in fig. 9-11, the blocking portion 112 is removably coupled to the annular portion 111. Specifically, at least part of the connecting ribs 115 is provided with positioning columns 1152, a plurality of positioning columns 1152 are arranged at intervals along the circumferential direction of the hub 11, each positioning column 1152 is provided with a positioning hole 1153, and the leeward side surface of the blocking part 112 is provided with a positioning pin 1123 matched with the positioning hole 1153.

In some embodiments of the present invention, as shown in fig. 7, the outer edge of the air intake side surface of the blocking portion 112 is flush with the edge of the annular portion 111 near the air intake side. Thereby, it is possible to avoid that the air flow discharged from the air intake side surface of the blocking portion 112 is not smoothly discharged to the blade 12 due to the blocking of the inner peripheral wall of the annular portion 111, which is advantageous in improving the efficiency of the wind wheel 1 and the motor 2.

The fan assembly 100 with the above characteristics is simulated and analyzed with the fan assembly without a blocking part and without a flow guiding rib in the blocking part in the prior art, and specific parameters are as follows: the operating point air volume was 1590m3/h, the revolution was 500rpm, and the static pressure was set around 14 Pa. In order to confirm the effect of the proposed shape, the fluid simulation model is composed of the wind guide ring and the fan assembly 100 described above, and the simulation results are shown in table 1, and compared with the prior art, the efficiency of the fan assembly 100 of the present application can be improved by 2.7%, and the static pressure of the wind wheel 1 can be improved by 1.23Pa.

TABLE 1

	Fan assembly efficiency%
		Prior Art	36.2
The application	38.9

An air conditioner outdoor unit according to an embodiment of the present invention is described below.

An outdoor unit of an air conditioner according to an embodiment of the present invention includes the fan assembly 100 described above.

The air conditioner outdoor unit provided by the embodiment of the invention further comprises a shell, a middle partition plate, a compressor, a heat exchanger, an electric control box and the like. The fan assembly 100 is arranged in the fan cavity, the compressor is arranged in the compressor cavity, the fan assembly 100 and the compressor assembly are connected with the electric control box, the electric control box can be arranged in the compression cavity, and the electric control box can also be arranged above the middle partition plate, is partially positioned in the fan cavity and is partially positioned in the compression cavity. The heat exchanger is disposed within the fan cavity and is located on the air intake side of the fan assembly 100. Wherein the heat exchanger may be L-shaped. Wherein the rotor 1 in the fan assembly 100 may be an axial flow rotor.

According to the air conditioner outdoor unit provided by the embodiment of the invention, the fan assembly 100 is arranged, the blocking part 112 is arranged on the air inlet side of the hub 11, the blocking part 112 blocks the opening of the air inlet side of the annular part 111, the groove in the annular part 111 can be covered, the air flow flowing through the hub 11 is prevented from rotating in the groove, the air flow is facilitated to flow to the blades 12 along the air inlet side surface of the blocking part 112, and then flows to the air outlet side of the wind wheel 1 under the action of the blades 12. In addition, the surface of the air inlet side of the blocking portion 112 is provided with the flow guiding rib 1121 extending from the center of the blocking portion 112 towards the edge of the blocking portion 112, which is beneficial to guiding the air flow of the air inlet side of the hub 11 to the blades 12, so that the air flows to the air outlet side of the wind wheel 1 under the action of the blades 12, and further, the efficiency of the wind wheel 1 and the motor 2 is beneficial to being improved.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (14)

1. A fan assembly, comprising:

the wind wheel comprises a wheel hub and blades, wherein the wheel hub comprises an annular portion and a blocking portion, the blades are arranged on the peripheral wall of the annular portion, the blocking portion is arranged at one axial end of the air inlet side of the annular portion to block one opening of the annular portion, a plurality of flow guide ribs which are spaced in the circumferential direction of the blocking portion are arranged on the air inlet side surface of the blocking portion, and the flow guide ribs extend from the center of the blocking portion to the peripheral edge of the wheel hub.

2. The fan assembly of claim 1 wherein the deflector ribs are inclined in a radially outward direction toward a direction opposite the direction of rotation of the rotor.

3. The fan assembly of claim 2 wherein the deflector rib extends in an arc.

4. A fan assembly as claimed in claim 3, wherein the deflector rib is formed from a plurality of arcuate segments of differing curvature.

5. The fan assembly of claim 4 wherein the curvature of a plurality of the arcuate segments tapers in a radially outward direction.

6. The fan assembly of claim 1 wherein the ribs have equal or progressively decreasing thickness in a radially outward direction.

7. The fan assembly of claim 1 wherein the height of the ribs is equal or progressively higher in a radially outward direction.

8. The fan assembly of claim 1 wherein an auxiliary rib is further provided between two adjacent ones of the deflector ribs, the auxiliary rib extending from a center of the blocking portion toward an outer periphery of the blocking portion and a radially inner end of the auxiliary rib being located radially outwardly of the radially inner end of the deflector rib.

9. The fan assembly of claim 8 wherein the auxiliary ribs have the same tendency to lean in a radially outward direction as the deflector ribs.

10. The fan assembly of claim 1 wherein the air intake side surface of the blocking portion is a plane perpendicular to the central axis of the hub,

or the air inlet side surface of the blocking part inclines towards the air outlet side of the wind wheel in the direction from the center to the outer periphery.

11. The fan assembly of claim 1, further comprising a motor positioned on an air inlet side of the hub and connected to the hub, wherein the blocking portion is provided with a hole for avoiding an output shaft of the motor.

12. The fan assembly of claim 11, wherein a boss is provided on a side of the motor facing the hub, the output shaft is provided on the boss, and a portion of the boss is located in the relief hole.

13. The fan assembly of any of claims 1-12 wherein an outer edge of an air intake side surface of the dam is flush with an edge of the annular portion proximate the air intake side.

14. An outdoor unit of an air conditioner, comprising the fan assembly according to any one of claims 1 to 13.

Images