WO2019210591A1 - Axial flow wind wheel, air conditioner outdoor unit and air conditioner - Google Patents

Abstract

An axial flow wind wheel (30), comprising a hub (31) and a plurality of blades (33), the plurality of blades being provided at intervals along a circumferential direction of the hub, each blade having a front edge (331), a tail edge (332) and an outer edge (333), an intersection point between the front edge and the outer edge being a first intersection point (A), an intersection point between the tail edge and the outer edge being a second intersection point (B), the projections of the first intersection points of the plurality of blades in a plane perpendicular to an axial direction of the hub being located on the same circumferential line, and the projections of the second intersection points of the plurality of blades in the plane perpendicular to the axial direction of the hub being located on the same circumferential line, the radius of the circle where the first intersection points are located being greater than the radius of the circle where the second intersection points are located. The axial flow wind wheel can improve the air supply volume, reduce noise, increase the heat exchange efficiency of an air conditioner, and reduce the power of the motor. An air conditioner outdoor unit and an air conditioner, comprising the axial flow wind wheel.

Description

 Axial flow wind wheel, air conditioner outdoor unit and air conditioner

Technical field

The present application relates to the field of wind turbines, and in particular to an axial flow wind wheel, and an air conditioner outdoor unit and an air conditioner to which the axial flow wind wheel is applied.

Background technique

For the heat exchanger of the air conditioner, the heat exchange efficiency directly affects the overall performance of the air conditioner. The basic structure of the conventional air conditioner intermediate wheel is composed of a circular hub having a center of rotation and a plurality of blades radially arranged on the outer peripheral side of the hub. The wind wheel is driven to rotate by the motor, and the air flows in from the leading edge of the blade, and the work is obtained by the blade to obtain a pressure rise and then flows out from the trailing edge of the blade.

The existing wind wheel generally has a hub and a blade. The blade has a leading edge, an outer edge and a trailing edge. The trailing edge of the blade is substantially a straight line, and the outer edge of the blade is projected on the same circumference in a plane perpendicular to the axial direction of the hub. on. During the operation of the wind turbine, the high-speed airflow is mixed with the outside air along the air-guiding ring under the action of the wind wheel. Since the external air is static air, the high-speed airflow interacts with the outside air to generate a large noise. In order to increase the amount of air supplied and increase the efficiency of the heat exchanger, it is necessary to increase the rotational speed of the wind wheel. However, increasing the speed of the wind wheel results in a larger air flow rate, greater interaction with the external still air, greater wind turbine noise, and increased motor speed.

Summary of the invention

The present application provides an axial flow wind wheel, which can increase the air supply volume of the axial flow wind wheel, reduce the axial flow wind wheel noise, and increase the heat exchange efficiency of the air conditioner and reduce the motor power.

The axial flow wind wheel proposed by the present application comprises a hub and a plurality of blades, wherein the plurality of blades are arranged along a circumferential direction of the hub, each blade has a leading edge and a trailing edge An outer edge, the intersection of the leading edge and the outer edge is a first intersection, the intersection of the trailing edge and the outer edge is a second intersection, and the first intersection of the plurality of blades is at an axis with the hub The projections in the plane perpendicular to each other are on the same circumferential line, and the projections of the second intersection of the plurality of blades in a plane perpendicular to the axial direction of the hub are on the same circumferential line, and the first intersection is in a circle The radius is greater than the radius of the circle at which the second intersection is located.

In an embodiment, the radius of the circle in which the first intersection point is defined is L1, and the radius of the circle in which the second intersection point is defined is L2, 0 mm<L1-L2≤7 Mm.

In an embodiment, 190 mm ≤ L1 ≤ 240 mm.

In an embodiment, an outer edge of each of the blades includes a first segment and a second segment that are connected, and a connection point of the first segment and the second segment is a third intersection, the first The intersection of the segment and the leading edge is the first intersection, the intersection of the second segment with the trailing edge is the second intersection, and the third intersection with the first intersection or the second intersection is The projections in the axially perpendicular plane of the hub are on the same circumferential line.

In an embodiment, a line connecting the first intersection with the center of the hub is a first connection, and a line connecting the second intersection with the center of the hub is a second connection, and the third intersection is a line connecting the center of the hub is a third line, and an angle defining a projection of the first line and the second line in a plane perpendicular to an axial direction of the hub is defined as θ1, and the The angle between the projection of the second line and the third line in a plane perpendicular to the axial direction of the hub is θ2, θ2 ≤ 1/2 θ1.

In an embodiment, the intersection of the leading edge and the hub is a fourth intersection, and the intersection of the trailing edge and the hub is a fifth intersection, and the connection of the fourth intersection and the fifth intersection is defined. The angle between the line and the plane perpendicular to the axial direction of the hub is θ3, 20° ≤ θ3 ≤ 30°.

In an embodiment, from the first intersection to the fourth intersection, the leading edge is disposed in a concave arc shape, and the trailing edge is disposed in a convex arc shape from the second intersection to the fifth intersection.

In an embodiment, the vertical distance between the projection of the first intersection in the axial direction of the hub and the projection of the second intersection in the axial direction of the hub is in the range of 130 mm to 160 mm.

In an embodiment, the blades are three, and the three blades are evenly distributed along the circumference of the hub.

The application also provides an outdoor unit for an air conditioner, comprising:

a housing having a receiving cavity, the housing having a mounting opening communicating with the receiving cavity;

a wind guiding ring, the air guiding ring is installed at the mounting opening,

An axial flow wind wheel, wherein the axial flow wind wheel is the axial flow wind wheel, wherein the axial flow wind wheel is disposed in the casing, and an air flow surface of the axial flow wind wheel is opposite to the installation opening .

In an embodiment, a blade portion of the axial flow wind wheel extends into the air guiding ring, and a width d of the axial direction of the air guiding ring is defined, and the fan blade extends into the air guiding ring. The length is in the range of 2/5d to 1/2d.

In an embodiment, the vertical distance between the first intersection and the inner wall of the air guiding ring is in the range of 6 mm to 10 mm.

The application also provides an air conditioner comprising:

An axial flow wind wheel as described above; or

The outdoor unit of the air conditioner as described above.

In the technical solution of the present application, the axial flow wind wheel includes a hub and a plurality of blades, and the plurality of blades are disposed along a circumferential interval of the hub, and each of the blades has a leading edge, a trailing edge and an outer edge. The present application changes the projection of the outer edge in a plane perpendicular to the axial direction of the hub such that the projection of the outer edge in a plane perpendicular to the axial direction of the hub is not on the same circumferential line, so that the axial flow wind wheel does not increase the rotational speed. Under the premise, it is possible to increase the air supply volume of the axial flow wind wheel, reduce the axial flow wind wheel noise, and increase the heat exchange efficiency of the air conditioner and reduce the motor power.

DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings to be used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present application, and other drawings can be obtained according to the structures shown in the drawings without any creative work for those skilled in the art.

1 is a schematic structural view of an embodiment of an air conditioner outdoor unit of the present application;

2 is a schematic structural view of an embodiment of an axial flow wind wheel of the present application;

3 is a schematic structural view of another embodiment of an axial flow wind wheel of the present application;

4 is a schematic structural view of another embodiment of the axial flow wind wheel of the present application.

Description of the reference numerals:

Label	name	Label	name
100	Air conditioner outdoor unit	331	Leading edge
10	Guide ring	332	Trailing edge
20	case	333	Outer edge
twenty one	Mounting port	334	First paragraph
twenty two	Accommodating chamber	335	Second paragraph
twenty three	support	A	First intersection
twenty four	Motor	B	Second intersection
30	Axial wind wheel	C	Third intersection
31	Wheel hub	D	Fourth intersection
33	Fan blade	E	Fifth intersection

The implementation, functional features and advantages of the present application will be further described with reference to the accompanying drawings.

detailed description

The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the drawings in the embodiments of the present application. It is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

It should be noted that all directional indications (such as up, down, left, right, front, back, ...) in the embodiments of the present application are only used to explain the components between a certain posture (as shown in the drawing). Relative positional relationship, motion situation, etc., if the specific posture changes, the directional indication also changes accordingly.

In the present application, the terms "connected", "fixed" and the like should be understood broadly, unless otherwise explicitly stated and defined. For example, "fixed" may be a fixed connection, or may be a detachable connection, or may be integrated; It may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship of two elements unless explicitly defined otherwise. For those skilled in the art, the specific meanings of the above terms in the present application can be understood on a case-by-case basis.

In addition, the descriptions of "first", "second", and the like in this application are used for descriptive purposes only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In addition, the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. Nor is it within the scope of protection required by this application.

The present application proposes an axial flow wind wheel 30 for use in an air conditioner.

Referring to FIG. 2 and FIG. 4 together, in the present application, the axial flow wind wheel 30 includes a hub 31 and a plurality of blades 33, wherein a plurality of blades 33 are circumferentially spaced along the hub 31, each fan The leaf 33 has a leading edge 331, a trailing edge 332 and an outer edge 333. The intersection of the leading edge 331 and the outer edge 333 is the first intersection A, the intersection of the trailing edge 332 and the outer edge 333 is the second intersection B, and the first intersection A of the plurality of blades 33 is perpendicular to the axial direction of the hub 31. The projections in the plane are on the same circumferential line, and the projections of the second intersection B of the plurality of blades 33 in the plane perpendicular to the axial direction of the hub 31 are on the same circumferential line, and the radius of the circle of the first intersection A is larger than the first The radius of the circle where the second intersection B is located.

Specifically, the hub 31 of the axial flow wind wheel 30 is mounted on the output shaft of the motor and is driven by a motor. In order to better achieve the mounting fit of the hub 31 and the motor, a mounting hole (not shown) is opened in the center of the hub 31, and an output shaft of the motor is mounted in the mounting hole to achieve a fixed connection with the hub 31 of the axial flow wind wheel 30. When the motor drives the axial flow wind wheel 30 to rotate, air flows in from the leading edge 331 of the blade 33, and is lifted by the blade 33 to obtain a pressure rise, and then flows out from the trailing edge 332 of the blade 33.

In the present embodiment, the plurality of blades 33 may be evenly spaced from the circumferential direction of the hub 31, and the plurality of blades 33 may be non-uniformly spaced from the circumferential direction of the hub 31. Preferably, in the present embodiment, the number of the blades 33 is three, and the three blades are evenly distributed along the circumferential direction of the hub 31. The leading edge 331, the trailing edge 332 and the outer edge 333 of the blade 33 cooperate to form a fan-shaped blade 33. The first edge A to the second intersection B are provided with a convex arc shape. In the present embodiment, the fan-shaped blade 33 is connected to one end of the hub 31 to the outer edge 333, and the fan-shaped area of the fan-shaped blade 33 is gradually increased. That is, from the end of the connecting hub 31 to the end of the outer edge 333, the line between the leading edge 331 and the trailing edge 332 gradually increases. This design is advantageous for increasing the air supply volume of the axial flow wind wheel 30.

It can be understood that, in the embodiment, from the first intersection point A to the second intersection point B, the outer edge 333 is a convex arc type. That is, from the first intersection point A to the second intersection point B, the line connecting the outer edge 333 and the center of the hub 31 gradually increases. The arrangement is beneficial to ensure that the axial flow wind wheel 30 can increase the air supply volume of the axial flow wind wheel 30, reduce the noise of the axial flow wind wheel 30, and increase the heat exchange efficiency of the air conditioner without increasing the rotational speed. Reduce motor power.

The projection of the outer edge of the blade in the existing wind wheel on a plane perpendicular to the axial direction of the hub is on the same circumferential line. During the operation of the wind turbine, the high-speed airflow is mixed with the outside air along the air guiding ring under the action of the wind wheel. Since the outside air is still air, the high-speed airflow interacts with the outside air, which generates a large noise. In order to increase the amount of air supplied and increase the efficiency of the heat exchanger, it is necessary to increase the rotational speed of the wind wheel. However, increasing the speed of the wind wheel results in a larger air flow rate, greater interaction with the external still air, greater wind turbine noise, and increased motor speed.

By optimizing the structure of the blade 33 of the axial flow wind wheel 30, the intersection of the leading edge 331 and the outer edge 333 is the first intersection A, and the intersection of the trailing edge 332 and the outer edge 333 is the second intersection B, and a plurality of blades The projection of the first intersection A of 33 in a plane perpendicular to the axial direction of the hub 31 is on the same circumferential line, and the projection of the second intersection B of the plurality of blades 33 in a plane perpendicular to the axial direction of the hub 31 Located on the same circumference line, the radius of the circle where the first intersection point A is larger than the radius of the circle where the second intersection point B is located. That is, by changing the projection of the outer edge 333 in a plane perpendicular to the axial direction of the hub 31, the projection of the outer edge 333 in a plane perpendicular to the axial direction of the hub 31 is not on the same circumferential line, thereby causing the axial flow wind wheel 30 Without increasing the rotational speed, it is possible to increase the air supply volume of the axial flow wind wheel 30, reduce the noise of the axial flow wind wheel 30, and increase the heat exchange efficiency of the air conditioner and reduce the motor power.

In an embodiment, as shown in FIG. 2 to FIG. 4, the radius of the circle in which the first intersection point A is defined is L1, and the radius of the circle in which the second intersection point B is defined is L2. Preferably, 0 mm < L1 - L2 ≤ 7 Mm. As an alternative embodiment of the present embodiment, the difference between the radius L1 of the circle in which the first intersection A is located and the radius L2 of the circle in which the second intersection B is located is 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, and 7 mm. As a preferred embodiment of the present embodiment, L1 - L2 = 5 mm. In this case, the axial flow wind wheel 30 has the best air supply amount without reducing the rotational speed, and the effect of reducing the noise is optimal, and the heat exchange efficiency of the air conditioner and the power of the motor are optimized.

In an embodiment, as shown in FIG. 3 and FIG. 4, optionally, the radius L1 of the circle where the first intersection A is located is in the range of 190 mm to 240 mm. That is, the diameter of the largest circle formed by the projection of the blade 33 of the axial flow wind wheel 30 in a plane perpendicular to the axial direction of the hub 31 is in the range of 380 mm to 480 mm. Preferably, the radius L1 of the circle where the first intersection A is located is 190 mm, 200 mm, 210 mm, 220 mm, 230 mm, 240 mm.

As shown in FIG. 4, in another embodiment of the present application, the outer edge 333 of each blade 33 includes a first segment 334 and a second segment 335 that are connected, and the first segment 334 and the second segment 335 are connected. The point is the third intersection E, the intersection of the first section 334 and the leading edge 331 is the first intersection A, the intersection of the second section 335 and the trailing edge 332 is the second intersection B, and the third intersection E and the first intersection A or the The projection of the two intersection points B in the axially perpendicular plane of the hub 31 is on the same circumferential line. It will be understood that the outer edge 333 of each blade 33 has only a portion of the projection in a plane perpendicular to the axial direction of the hub 31 on the same circumferential line, and the other portions of the outer edge 333 are in a plane perpendicular to the axial direction of the hub 31. The projections inside are not on the same circumference.

Specifically, in the first embodiment of the present embodiment, as shown in FIG. 4, the projections of the third intersection E and the first intersection A in the plane perpendicular to the axial direction of the hub 31 are located on the same circumferential line. That is, the projection of the first section 334 of the outer edge 333 in the axially perpendicular plane of the hub 31 lies on the same circumferential line. The projection of the second section 335 of the outer edge 333 in the axially perpendicular plane of the hub 31 is not on the same circumferential line.

In the second embodiment of the present embodiment, the projections of the third intersection E and the second intersection B in the plane perpendicular to the axial direction of the hub 31 are on the same circumferential line. That is, the projection of the second section 335 of the outer edge 333 in the axially perpendicular plane of the hub 31 lies on the same circumferential line. The projection of the first section 334 of the outer edge 333 in the axially perpendicular plane of the hub 31 is not on the same circumferential line. This arrangement also makes it possible to increase the air supply amount of the axial flow wind wheel 30, reduce the noise of the axial flow wind wheel 30, and increase the heat exchange efficiency of the air conditioner and reduce the motor power without increasing the rotational speed.

In an embodiment, as shown in FIG. 4, the connection between the first intersection A and the center of the hub 31 is a first connection (not shown), and the connection between the second intersection B and the center of the hub 31 is a second connection ( Not shown), the line connecting the third intersection with the center of the hub 31 is a third line (not shown), defining an angle between the projection of the first line and the second line in a plane perpendicular to the axial direction of the hub 31. For θ1, the angle between the projection in which the second line and the third line are perpendicular to the axial direction of the hub 31 is defined as θ2, θ2 ≤ 1/2 θ1. That is, the portion of the outer edge 333 that is projected on the same circumferential line in a plane perpendicular to the axial direction of the hub 31 is less than or equal to 1/2 of the outer edge 333. Alternatively, θ2 = 1/2 θ1. In this case, the axial flow wind wheel 30 has the best air supply amount, and the noise reduction effect is optimal, and the heat exchange efficiency of the air conditioner and the power of the motor are optimized. .

In an embodiment, as shown in FIG. 2, the intersection of the leading edge 331 and the hub 31 is the fourth intersection C, and the intersection of the trailing edge 332 and the hub 31 is the fifth intersection D, defining the fourth intersection C and the fifth intersection D. The angle between the line and the plane perpendicular to the axial direction of the hub 31 is θ3, 20° ≤ θ3 ≤ 30°. Optionally, the angle θ3 is 20°, 22°, 24°, 25°, 26°, 28°, 30°. The range of the angle θ3 affects the arrangement of the blade 33 in the axial direction of the hub 31, and the excessive or too small angle θ3 affects the air supply amount and noise of the axial flow wind wheel 30. The angle θ3 is in the range of 20° to 30°, and the axial flow wind 30 has the best air supply amount and noise effect.

In an embodiment, as shown in FIGS. 2 to 4, from the first intersection A to the fourth intersection C, the leading edge 331 is a concave arc type. The leading edge 331 is provided in a concave arc shape, and facilitates the inflow of air from the leading edge 331 of the blade 33 when the axial flow wheel 30 rotates. From the second intersection point B to the fifth intersection point D, the trailing edge 332 is a convex arc type setting. The trailing edge 332 is disposed in a convex arc shape. When the axial wind turbine 30 rotates, it facilitates the flow of air from the trailing edge 332 of the blade 33, and at the same time reduces the noise.

In an embodiment, the vertical distance between the projection of the first intersection A in the axial direction of the hub 31 and the projection of the second intersection B in the axial direction of the hub 31 is in the range of 130 mm to 160 mm. It can be understood that in the axial direction of the hub 31, the projection of the first intersection A in the axial direction of the hub 31 is perpendicular to the axial direction of the hub 31 and the projection of the second intersection B in the axial direction of the hub 31 is perpendicular to the hub 31 axis. The distance between the planes of the directions is in the range of 130 mm to 160 mm. Optionally, the distance is 130 mm, 140 mm, 150 mm, 160 mm.

The experimental results of the axial flow wind wheel 30 proposed by the present application and the wind wheel of the prior art scheme under the same air volume are as follows:

The projection of the outer edge of the blade of the existing wind wheel in the axially perpendicular plane of the hub 31 is on the same circumferential line. The parameters of the existing wind wheel are: the radius of the circle in which the outer edge is projected in the axially perpendicular plane of the hub 31 is 210 mm, and the vertical distance between the projections of the outer edge at the axial direction of the hub 31 is 143 mm. .

The parameter of the axial flow wind wheel 30 proposed by the present application is that the radius L1 of the circle where the first intersection point A is 210 mm, the projection of the first intersection point A in the axial direction of the hub 31 and the projection of the second intersection point B in the axial direction of the hub 31 The vertical distance between the two is 143 mm, and the difference between the radius L1 of the circle where the first intersection A is located and the radius L2 of the circle where the second intersection B is located is 5 mm.

Comparison between the existing wind wheel and the axial flow wind wheel 30 of the present application

Air volume (m 3 /h)	Motor power required for existing wind wheels (W)	Existing wind turbine noise (dBA)	Motor power required for axial flow wind wheel 30 (W)	Axial flow wind 30 noise (dBA)
2000	34.3	46.1	31.6	39.7
2047	35.6	46.5	33.1	46.1
2071	37.3	46.9	35	46.4
2107	38.3	47.2	35.7	46.8
2138	39.7	47.6	36.9	47.2

It can be seen from the above experimental comparison results that the axial flow wind wheel 30 proposed by the present application has a power reduction of about 2.5 W and a noise reduction of about 0.4 compared with the existing wind turbine. dBA. It can be seen that the axial flow wind wheel 30 proposed by the present application can increase the air supply volume and reduce the noise without increasing the rotational speed, and has the advantages of increasing the heat exchange efficiency of the air conditioner and reducing the motor power. Effect.

As shown in FIG. 1 , the present application further provides an air conditioner outdoor unit 100, including:

a housing 20 having a receiving cavity 22, the housing 20 having a mounting opening 21 communicating with the receiving cavity 22;

The air guiding ring 10, the air guiding ring 10 is installed at the mounting opening 21,

The axial flow wind wheel 30 and the axial flow wind wheel 30 are the above-described axial flow wind wheel 30. The axial flow wind wheel 30 is provided in the casing 20, and the air flow surface of the axial flow wind wheel 30 opposes the mounting opening 21.

The specific structure of the axial flow wind wheel 30 is referred to the above embodiment. Since the air conditioner outdoor unit 100 adopts all the technical solutions of all the above embodiments, at least all the effects brought by the technical solutions of the above embodiments are not Repeat them one by one.

It can be understood that the housing 20 is provided with a bracket 23 for mounting the axial flow wind wheel 30 and a motor 24 disposed on the bracket 23. When the axial flow wind wheel 30 is mounted on the bracket 22, the hub 31 of the axial flow wind wheel 30 and the motor The output shaft of the 24 is fixedly connected, and the air outlet surface of the axial flow wind wheel 30 is opposed to the mounting opening 21. That is, the air blowing surface of the axial flow wind wheel 30 is opposed to the air guiding air passage of the air guiding ring 10.

In other embodiments of this embodiment, a portion of the axial flow wind wheel 30 is received within the air guide air duct. The housing 20 is usually made of a metal material. Therefore, it is preferable that the air guiding ring 10 and the housing 20 are integrally formed by a press forming method. The press forming method is a common method in metal forming, and the molded part has a small wall thickness and a light weight. Helps reduce the mass of the housing 20 and the air guiding ring 10.

In an embodiment, as shown in FIG. 1, the blade 33 of the axial flow wind wheel 30 partially extends into the air guiding ring 10. At this time, the blade 33 extends into the air guiding ring from the leading edge 331 to the trailing edge 332. Within 10. The width of the air guiding ring 10 in the axial direction is defined as d, that is, the height of the air guiding ring 10 in the axial direction of the air guiding ring 10. The length of the fan blade 33 extending into the air guiding ring 10 is in the range of 2/5d to 1/2d. The design is such that during the rotation of the axial flow wind wheel 30, it is advantageous to reduce the noise of the axial flow wind wheel 30. It can be understood that the length of the fan blade 33 of the axial flow wind wheel 30 extending into the air guiding ring 10 can also be equal to the width d of the axial direction of the air guiding ring 10.

As a preferred embodiment of the present embodiment, the vertical distance between the first intersection A and the inner wall of the air guiding ring 10 is in the range of 6 mm to 10 mm. That is, the maximum circle formed by the projection of the blade 33 of the axial flow wind wheel 30 in a plane perpendicular to the axial direction of the hub 31 is perpendicular to the inner wall of the air guide ring 10 in the range of 6 mm to 10 mm. Preferably, the vertical distance is 6 mm, 7 mm, 8 mm, 9 mm, 10 mm. Provided in this way, it is advantageous to protect the axial flow wind wheel 30 and the air guide ring 10, and to prevent the axial flow wind wheel 30 from colliding with the inner wall of the air guide ring 10 during the rotation, and damage occurs. Of course, the vertical distance is in the range of 6 mm to 10 mm, and during the rotation of the axial flow wind wheel 30, it is advantageous to reduce the noise of the axial flow wind wheel 30 and ensure the air supply volume of the axial flow wind wheel 30.

In this embodiment, the air guiding ring 10 and the housing 20 can be an integrally formed structure, which is advantageous for reducing the production and manufacturing difficulty and improving the production efficiency. The air guiding ring 10 and the housing 20 can also be detachably connected. When one of the housing 20 and the air guiding ring 10 is damaged, the component can be removed for repair or replacement, and the maintenance or replacement by the housing 20 and The air guide ring 10 is composed of the whole. The detachable connection manner may be a connection manner of a screw, a pin, a plug, a buckle, etc., and the embodiment is not limited thereto. Optionally, the air guiding ring 10 and the housing 20 are integrally formed by injection molding, and the operation process of the injection molding method is simple, easy to implement, and the molding efficiency is high, which helps to simplify the manufacturing process of the air guiding ring 10 . The manufacturing cost of the air guiding ring 10 is reduced, and the manufacturing efficiency of the air guiding ring 10 is improved.

The present application also provides an air conditioner including the above-described axial flow wind wheel 30. The specific structure of the axial flow wind wheel 30 is referred to the above embodiment. Since the air conditioner adopts all the technical solutions of all the above embodiments, at least the effects brought by the technical solutions of the above embodiments are no longer used. A narrative.

The present application also proposes an air conditioner including the above-described air conditioner outdoor unit 100. The specific structure of the air conditioner outdoor unit 100 is referred to the above embodiment. Since the air conditioner adopts all the technical solutions of all the above embodiments, at least all the effects brought by the technical solutions of the above embodiments are not used herein. Narration.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the patents of the present application, and the equivalent structural transformation, or direct/indirect use, of the present application and the contents of the drawings is used in the present invention. All other related technical fields are included in the patent protection scope of the present application.

Claims (20)

1. An axial flow wind wheel, wherein the axial flow wind wheel comprises a hub and a plurality of blades, wherein the plurality of blades are arranged along a circumferential direction of the hub, each blade has a leading edge and a trailing edge An outer edge, the intersection of the leading edge and the outer edge is a first intersection, the intersection of the trailing edge and the outer edge is a second intersection, and the first intersection of the plurality of blades is at an axis with the hub The projections in the plane perpendicular to each other are on the same circumferential line, and the projections of the second intersection of the plurality of blades in a plane perpendicular to the axial direction of the hub are on the same circumferential line, and the first intersection is in a circle The radius is greater than the radius of the circle at which the second intersection is located.
2. The axial flow wind wheel according to claim 1, wherein a radius defining a circle in which the first intersection is located is L1, and a radius defining a circle in which the second intersection is located is L2, 0 mm < L1 - L2 ≤ 7 Mm.
3. The axial flow wind wheel according to claim 2, wherein 190 mm ≤ L1 ≤ 240 mm.
4. The axial flow wind turbine according to claim 1, wherein an outer edge of each of said blades includes a first segment and a second segment that are connected, and a connection point of said first segment and said second segment is a third intersection, the intersection of the first segment and the leading edge is the first intersection, the intersection of the second segment and the trailing edge is the second intersection, the third intersection and the first The projections of the intersection or the second intersection in the axially perpendicular plane of the hub are on the same circumferential line.
5. The axial flow wind turbine according to claim 4, wherein a line connecting the first intersection with the center of the hub is a first connection, and a connection between the second intersection and the center of the hub is a second connection a line connecting the third intersection with the center of the hub as a third line defining a projection of the first line and the second line in a plane perpendicular to the axial direction of the hub The included angle is θ1, and the angle between the projection of the second line and the third line in a plane perpendicular to the axial direction of the hub is defined as θ2, θ2 ≤ 1/2 θ1.
6. The axial flow wind wheel according to claim 1, wherein an intersection of the leading edge and the hub is a fourth intersection, and an intersection of the trailing edge and the hub is a fifth intersection, and the fourth intersection is defined The angle between the line connecting the fifth intersection and the plane perpendicular to the axial direction of the hub is θ3, 20° ≤ θ3 ≤ 30°.
7. The axial flow wind wheel according to claim 2, wherein an intersection of the leading edge and the hub is a fourth intersection, and an intersection of the trailing edge and the hub is a fifth intersection, and the fourth intersection is defined The angle between the line connecting the fifth intersection and the plane perpendicular to the axial direction of the hub is θ3, 20° ≤ θ3 ≤ 30°.
8. The axial flow wind wheel according to claim 3, wherein an intersection of the leading edge and the hub is a fourth intersection, and an intersection of the trailing edge and the hub is a fifth intersection, and the fourth intersection is defined The angle between the line connecting the fifth intersection and the plane perpendicular to the axial direction of the hub is θ3, 20° ≤ θ3 ≤ 30°.
9. The axial flow wind wheel according to claim 4, wherein an intersection of the leading edge and the hub is a fourth intersection, and an intersection of the trailing edge and the hub is a fifth intersection, and the fourth intersection is defined The angle between the line connecting the fifth intersection and the plane perpendicular to the axial direction of the hub is θ3, 20° ≤ θ3 ≤ 30°.
10. The axial flow wind wheel according to claim 5, wherein an intersection of the leading edge and the hub is a fourth intersection, and an intersection of the trailing edge and the hub is a fifth intersection, and the fourth intersection is defined The angle between the line connecting the fifth intersection and the plane perpendicular to the axial direction of the hub is θ3, 20° ≤ θ3 ≤ 30°.
11. The axial flow wind wheel according to claim 6, wherein, from the first intersection to the fourth intersection, the leading edge is a concave arc type, and the tail is from the second intersection to the fifth intersection The edge is a convex arc type setting.
12. The axial flow wind wheel according to claim 7, wherein, from the first intersection to the fourth intersection, the leading edge is a concave arc type, and the tail is from the second intersection to the fifth intersection The edge is a convex arc type setting.
13. The axial flow wind wheel according to claim 9, wherein, from the first intersection to the fourth intersection, the leading edge is a concave arc type, and the tail is from the second intersection to the fifth intersection The edge is a convex arc type setting.
14. The axial flow wind wheel according to claim 10, wherein, from the first intersection to the fourth intersection, the leading edge is a concave arc type, from the second intersection to the fifth intersection, the tail The edge is a convex arc type setting.
15. The axial flow wind turbine according to claim 6, wherein a vertical distance between the projection of the first intersection in the axial direction of the hub and the projection of the second intersection in the axial direction of the hub is 130 mm Up to 160mm.
16. The axial flow wind turbine according to claim 6, wherein said plurality of blades are three, and said three said blades are evenly distributed along a circumferential direction of said hub.
17. An air conditioner outdoor unit, comprising:

    a housing having a receiving cavity, the housing having a mounting opening communicating with the receiving cavity;

    a wind guiding ring, the air guiding ring is installed at the mounting opening,

    An axial flow wind wheel, the axial flow wind wheel is disposed in the casing, and an air flow surface of the axial flow wind wheel is opposite to the installation port; the axial flow wind wheel comprises a hub and a plurality of fan blades, and more The blades are disposed along a circumferential interval of the hub, each blade has a leading edge, a trailing edge and an outer edge, and an intersection of the leading edge and the outer edge is a first intersection, and the trailing edge is The intersection of the outer edges is a second intersection, the projection of the first intersection of the plurality of blades in a plane perpendicular to the axial direction of the hub is on the same circumferential line, and the second intersection of the plurality of blades is The projections in the axially perpendicular plane of the hub are on the same circumferential line, and the radius of the circle in which the first intersection is located is greater than the radius of the circle in which the second intersection is located.
18. The air conditioner outdoor unit according to claim 17, wherein a blade portion of the axial flow wind wheel extends into the air guiding ring, and a width d of the axial direction of the air guiding ring is defined, and the blade extends The length of the air guiding ring is in the range of 2/5d to 1/2d.
19. The air conditioner outdoor unit according to claim 18, wherein a vertical distance between the first intersection and the inner wall of the air guiding ring is in a range of 6 mm to 10 mm.
20. An air conditioner, comprising:

    An axial flow wind wheel comprising a hub and a plurality of blades, wherein the plurality of blades are spaced apart along a circumferential direction of the hub, each blade having a leading edge, a trailing edge and an outer edge, The intersection of the leading edge and the outer edge is a first intersection, the intersection of the trailing edge and the outer edge is a second intersection, and the first intersection of the plurality of blades is perpendicular to the axial direction of the hub The projections in the plane are on the same circumferential line, and the projections of the second intersections of the plurality of blades in a plane perpendicular to the axial direction of the hub are on the same circumferential line, and the radius of the circle at the first intersection is larger than The radius of the circle at which the second intersection is located; or

    An air conditioner outdoor unit including:

    a housing having a receiving cavity, the housing having a mounting opening communicating with the receiving cavity;

    a wind guiding ring, the air guiding ring is installed at the mounting opening,

    An axial flow wind wheel, the axial flow wind wheel is disposed in the casing, and an air flow surface of the axial flow wind wheel is opposite to the installation port; the axial flow wind wheel comprises a hub and a plurality of fan blades, and more The blades are disposed along a circumferential interval of the hub, each blade has a leading edge, a trailing edge and an outer edge, and an intersection of the leading edge and the outer edge is a first intersection, and the trailing edge is The intersection of the outer edges is a second intersection, the projection of the first intersection of the plurality of blades in a plane perpendicular to the axial direction of the hub is on the same circumferential line, and the second intersection of the plurality of blades is The projections in the axially perpendicular plane of the hub are on the same circumferential line, and the radius of the circle in which the first intersection is located is greater than the radius of the circle in which the second intersection is located.