CN221801942U - Air guide ring and air conditioner outdoor unit - Google Patents

Abstract

The present disclosure relates to an air guide ring and an outdoor unit of an air conditioner, wherein the air guide ring has an air guide channel, an air inlet end and an air outlet end, wherein the air inlet end and the air outlet end are both connected to the air guide channel, and the air inlet end is arranged obliquely relative to a preset plane, and the preset plane is perpendicular to the extension direction of the air guide channel. When the air guide ring of the present disclosure is used for a fan, the airflow enters the air guide channel through the air inlet end under the drive of the blades of the fan, and then flows out through the air outlet end. By setting the air inlet end to be arranged obliquely relative to the preset plane, the coverage rate of different positions of the air guide ring can be different, thereby adjusting the airflow state of different positions of the air guide ring and improving the aerodynamic performance of the outdoor unit of the air conditioner having the air guide ring.

Description

Air guide ring and air conditioner outdoor unit

Technical Field

The present disclosure relates to the technical field of air conditioning equipment, and in particular to an air guide ring and an air conditioner outdoor unit.

Background Art

At present, open axial flow fans are commonly used in air-conditioning outdoor units. This type of fan is a type of axial flow fan and is widely used in equipment such as air-conditioning outdoor units. The biggest difference between an open axial flow fan and a ducted axial flow fan (also called a closed axial flow fan) commonly used for fire smoke exhaust is that its air guide ring only covers a local area near the trailing edge. There is a phenomenon of radial airflow in the part not covered by the air guide ring, and the air duct shrinks when the airflow passes through the air guide ring, making the flow in the top area of the blade more complicated. As an important component of the fan, the air guide ring has a great influence on the aerodynamic performance of the fan. Therefore, it is urgent to optimize the structure of the air guide ring to improve the aerodynamic performance of the fan, and then improve the aerodynamic performance of the air-conditioning outdoor unit.

Utility Model Content

To this end, the present disclosure proposes an air guide ring to improve the aerodynamic performance of an air conditioner outdoor unit.

The air guide ring disclosed in the present invention has an air guide channel, an air inlet end and an air outlet end, the air inlet end and the air outlet end are both connected to the air guide channel, the air inlet end is arranged inclined relative to a preset plane, and the preset plane is perpendicular to the extension direction of the air guide channel.

Optionally, the angle between the air inlet end and the preset plane is 1.5° to 3.5°.

Optionally, the surface where the air inlet end is located is a plane or an arc-shaped surface.

Optionally, the air guide ring includes an air cylinder section and a guide section connected in sequence, the end of the guide section away from the air cylinder section forms the air inlet end, and the diameter of the guide section gradually increases in the direction away from the air cylinder section; the air inlet end is provided with a first cut-off portion, and the distance between the first cut-off portion and the air outlet end is greater than the distance between any other part of the air inlet end and the air outlet end.

Optionally, the air inlet end is provided with a second cut-off portion, the second cut-off portion and the first cut-off portion are arranged opposite to each other in the radial direction of the air guide ring, and the distance between the second cut-off portion and the air outlet end is smaller than the distance between any other point of the air inlet end and the air outlet end.

Optionally, the air guide ring includes a wind cylinder section and a guide section connected in sequence, the end of the guide section away from the wind cylinder section forms the air inlet end, and the diameter of the guide section gradually increases in the direction away from the wind cylinder section; the surface where the air inlet end is located is parallel to the surface where the end of the guide section close to the wind cylinder section is located.

The air-conditioning outdoor unit of the disclosed embodiment includes a casing and a fan, the casing is provided with an air outlet; the fan is arranged in the casing, the fan includes an air guide ring and a plurality of blades, the air guide ring is the air guide ring described in any one of the above items, at least a part of the blades is arranged in the air guide ring, and the air outlet end is connected to the air outlet.

Optionally, a part of the blade is arranged inside the air guide ring, and another part of the blade is arranged outside the air guide ring and on the side of the air guide ring away from the air outlet end; taking the average coverage rate of the air guide ring as ε, the average distance between the air inlet end and the trailing edge of the blade is A, the maximum distance between the leading edge of the blade and the trailing edge of the blade is H, ε=A/H, ε is 50%~70%; wherein A is equal to the average value of the maximum distance between the air inlet end and the trailing edge of the blade and the minimum distance between the air inlet end and the trailing edge of the blade.

Optionally, the air conditioner outdoor unit includes a condenser and a compressor, and the condenser and the compressor are both arranged in the casing. The condenser includes a first part and a second part. The first part is arranged on a side of the fan away from the air outlet end, and the second part and the compressor are respectively arranged on both radial sides of the air guide ring, and the air inlet end is arranged inclined along the direction toward the compressor.

Optionally, the air inlet end is symmetrically arranged along the height direction of the air-conditioning outdoor unit, wherein the height direction of the air-conditioning outdoor unit is perpendicular to the extension direction of the air guide channel and perpendicular to the arrangement direction of the second part and the compressor.

When the air guide ring of the present disclosure is used for a fan, driven by the blades of the fan, the airflow enters the air guide channel through the air inlet end and then flows out through the air outlet end. By arranging the air inlet end to be inclined relative to a preset plane, the coverage rate of different positions of the air guide ring can be different, thereby adjusting the airflow state of different positions of the air guide ring and improving the aerodynamic performance of the air conditioner outdoor unit having the air guide ring.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a three-dimensional view of an air guide ring according to an embodiment of the present disclosure in use.

FIG. 2 is a top view of an air guide ring according to an embodiment of the present disclosure in use.

FIG3 is a top view of an air guide ring according to another embodiment of the present disclosure in use.

FIG4 is a top view of an air guide ring according to another embodiment of the present disclosure in use.

FIG5 is a top view of an air guide ring according to another embodiment of the present disclosure in use.

FIG6 is a top view of an air guide ring according to another embodiment of the present disclosure in use.

FIG. 7 is a perspective view of an air conditioner outdoor unit according to an embodiment of the present disclosure.

FIG. 8 is a top view of an air conditioner outdoor unit according to an embodiment of the present disclosure.

FIG. 9 is a graph showing the relationship between the inclination angle of the air inlet end and the performance of the air conditioner outdoor unit.

FIG. 10 is a graph showing the relationship between the coverage of the air guide ring and the performance of the air conditioner outdoor unit.

FIG. 11 is a diagram showing the relationship between the air volume and power of the outdoor unit of the air conditioner.

FIG. 12 is a graph showing the relationship between the air volume and efficiency of the outdoor unit of the air conditioner.

Reference numerals:

1. air guide ring; 11. air guide channel; 12. air inlet end; 121. first cut-off portion; 122. second cut-off portion; 13. air outlet end; 101. air cylinder section; 102. flow guide section;

2. Casing; 21. Top cover; 22. Bottom plate; 23. Back plate; 231. Air outlet; 24. Partition plate; 201. Condenser cavity; 202. Compressor cavity;

3. Blade; 31. Leading edge; 32. Trailing edge;

4. Motor;

5. Grille.

DETAILED DESCRIPTION

Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, but should not be understood as limiting the present disclosure.

In order to increase the air volume and heat exchange, the air conditioner outdoor unit is provided with an air inlet on the front side of the casing as well as an air inlet on the side of the casing away from the compressor. The air inlet on the front side of the casing is the front air inlet, and the air inlet on the side away from the compressor is the side air inlet. When the air conditioner outdoor unit is in operation, driven by the fan blades, most of the airflow enters the casing through the front air inlet. After that, a part of the airflow (front airflow) passes through the condenser from the front of the fan and passes through the fan blades along the axial direction of the air guide ring. Another part of the airflow (edge airflow) passes through the condenser from the side close to the compressor and passes through the fan blades in a direction intersecting the axial direction of the air guide ring. Another part of the airflow (side airflow) enters the casing through the side air inlet, and then passes through the condenser from the radial side of the air guide ring and passes through the fan blades along the radial direction of the air guide ring.

The air intake directions of the above-mentioned edge airflow and side airflow are not arranged symmetrically, and the flow rates of the edge airflow and side airflow are also different, which leads to different air intake states on the side of the air guide ring close to the compressor and the side away from the compressor. This makes the optimal coverage rate of the air guide ring close to the compressor different from the optimal coverage rate of the air guide ring away from the compressor. Among them, the coverage rate of the air guide ring is the ratio of the distance from the front end (air inlet end) of the air guide ring to the trailing edge of the blade to the maximum distance from the leading edge to the trailing edge of the blade. In the related art, the air guide ring is symmetrically arranged on the side close to the compressor and the side away from the compressor, resulting in the same coverage rate at all parts of the air guide ring, which may cause the airflow entering the side close to the compressor and the side away from the compressor to not be in the optimal state, resulting in poor aerodynamic performance of the fan, and ultimately poor aerodynamic performance of the air conditioner outdoor unit.

As shown in Figures 1 to 6, the air guide ring 1 of the embodiment of the present disclosure has an air guide channel 11, an air inlet end 12 and an air outlet end 13. The air inlet end 12 and the air outlet end 13 are both connected to the air guide channel 11. The air inlet end 12 is arranged at an inclination relative to a preset plane, and the preset plane is perpendicular to the extension direction of the air guide channel 11.

Among them, the air inlet end 12 is arranged inclined relative to the preset plane, which can be understood as: the angle between the air inlet end 12 and the preset plane is an acute angle. For example, as shown in Figures 2 to 5, the angle between the air inlet end 12 and the preset plane is α, which is greater than 0 and less than 90°.

When the air guide ring 1 of the disclosed embodiment is used for a fan, driven by the blades 3 of the fan, the airflow enters the air guide channel 11 through the air inlet end 12, and then flows out through the air outlet end 13. By setting the air inlet end 12 to be inclined relative to the preset plane, the coverage rate of different positions of the air guide ring 1 can be different, thereby adjusting the airflow state of different positions of the air guide ring 1 and improving the aerodynamic performance of the air conditioner outdoor unit having the air guide ring 1. Among them, the aerodynamic performance of the air conditioner outdoor unit includes air volume, efficiency, power, etc. The larger the air volume, the higher the efficiency, and the smaller the power, the better the aerodynamic performance of the air conditioner outdoor unit.

Optionally, the angle between the air inlet end 12 and the preset plane is 1.5° to 3.5°.

It can be understood that when the air inlet end 12 is arranged obliquely in the direction away from the compressor, the coverage rate of the air guide ring 1 close to the compressor side is larger. For example, as shown in Figures 1 and 2, α is 15°, and the left side of the air guide ring 1, that is, the side away from the compressor, more than half of the outer edge of the blade 3 is not covered by the air guide ring 1; however, the right side of the air guide ring 1, that is, the side close to the compressor is almost completely covered by the air guide ring 1. As shown in Figure 3, α is 5°, and the left side of the air guide ring 1, that is, the side away from the compressor, more than half of the outer edge of the blade 3 is not covered by the air guide ring 1; however, the right side of the air guide ring 1, that is, the side close to the compressor, is partially covered by the air guide ring 1, and the other part is located inside the air guide ring 1, and the coverage rate on the right side of the air guide ring 1 is smaller than that on the left side. As shown in Figure 4, α is -5°, and the left side of the air guide ring 1, that is, the side close to the compressor, is partially covered by the air guide ring 1, and the other part is located inside the air guide ring 1; however, on the right side of the air guide ring 1, that is, the side away from the compressor, more than half of the outer edge of the blade 3 is not covered by the air guide ring 1, and the coverage rate on the right side of the air guide ring 1 is greater than that on the left side. When α is negative, it means that the air inlet end 12 is tilted in the direction toward the compressor; when α is positive, it means that the air inlet end 12 is tilted in the direction away from the compressor.

The inclination angle in FIG9 is the angle between the air inlet end 12 and the preset plane; when the inclination angle is zero, it means that the air inlet end is parallel to the preset plane, and at this time, the air guide ring is a symmetrically arranged air guide ring in the related art. As shown in FIG9, experimental studies have shown that when the angle between the air inlet end 12 and the preset plane is positive, that is, when the air inlet end 12 is tilted in the direction away from the compressor, the air volume of the air conditioner outdoor unit is not increased, and even gradually decreases with the increase of the inclination angle. When the angle between the air inlet end 12 and the preset plane is negative, that is, when the air inlet end 12 is tilted in the direction toward the compressor, the air volume of the air conditioner outdoor unit is increased, and when the inclination angle is -2.5°, the air volume of the air conditioner outdoor unit reaches the maximum, and when it is less than -2.5° and greater than -2.5°, the air volume of the air conditioner outdoor unit will decrease.

Therefore, by setting the angle between the air inlet end 12 and the preset plane to 1.5° to 3.5°, when the air guide ring 1 is used in the fan, the air guide ring 1 can be tilted in the direction toward the compressor, thereby effectively increasing the air volume of the fan having the air guide ring 1.

In addition, it should be noted that, as shown in Figure 9, when the angle between the air inlet end 12 and the preset plane is other angles, although the air volume of the fan will not increase, it is not without advantages. For example, when the inclination angle is 12.5°, although the air volume and power are reduced, the flow efficiency is improved.

Optionally, the surface where the air inlet end 12 is located is a plane or an arc-shaped surface.

For example, as shown in Figures 1 to 4, the surface where the air inlet end 12 is located is a plane, and as shown in Figures 5 and 6, the surface where the air inlet end 12 is located is an arc surface, wherein the arc surface may be a circular arc surface.

By setting the surface where the air inlet end 12 is located as a flat surface or an arc surface, the processing and manufacturing of the air guide ring 1 is facilitated.

2 to 5 , the air guide ring 1 comprises a sequentially connected air cylinder section 101 and a flow guide section 102, and the end of the flow guide section 102 away from the air cylinder section 101 forms an air inlet end 12. The diameter of the flow guide section 102 gradually increases in a direction away from the air cylinder section 101.

The provision of the guide section 102 is beneficial to improving the guide effect of the air guide ring 1. The diameter of the guide section 102 gradually increases in the direction away from the wind tube section 101, resulting in a larger diameter at the air inlet end 12 of the guide section 102, which is easy to interfere with other components.

Optionally, as shown in FIGS. 1 to 6 , the air inlet end 12 is provided with a first cut-away portion 121 , and the distance between the first cut-away portion 121 and the air outlet end 13 is greater than the distance between any other portion of the air inlet end 12 and the air outlet end 13 .

In order to make the technical solution of the present disclosure easier to understand, the following takes the extension direction of the air guide channel 11 being consistent with the front-to-back direction as an example to further describe the technical solution of the present disclosure. The front-to-back direction is shown in FIGS. 1 to 6 .

For example, as shown in FIGS. 2 to 5 , the guide section 102 is arranged at the front side of the air cylinder section 101, and the air outlet end 13 is arranged at the rear side of the air cylinder section 101. The distance between the first cut-off portion 121 of the air inlet end 12 and the air outlet end 13 is L, and L is greater than the distance between any part of the air inlet end 12 except the first cut-off portion 121 and the air outlet end 13. That is, the distance between the first cut-off portion 121 of the air inlet end 12 and the air outlet end 13 is the longest. It can be understood that when the air inlet end 12 is tilted in the direction toward the compressor, the first cut-off portion 121 is arranged close to the condenser, resulting in the first cut-off portion 121 being easily interfered with the condenser; when the air inlet end 12 is tilted in the direction away from the compressor, the first cut-off portion 121 is arranged close to the compressor, resulting in the first cut-off portion 121 being easily interfered with the components near the compressor.

Therefore, by providing the first cut-off portion 121 at this location, it is possible to effectively avoid interference between the air guide ring 1 and other components during installation, thereby facilitating the layout and installation of the air guide ring 1 .

Optionally, the air inlet end 12 is provided with a second cut-off portion 122, and the second cut-off portion 122 and the first cut-off portion 121 are arranged opposite to each other in the radial direction of the air guide ring 1, and the distance between the second cut-off portion 122 and the air outlet end 13 is smaller than the distance between any other part of the air inlet end 12 and the air outlet end 13.

For example, as shown in FIG. 2 to FIG. 5 , the distance between the second cut-off portion 122 of the air inlet end 12 and the air outlet end 13 is D, and D is smaller than the distance between any other part of the air inlet end 12 except the second cut-off portion 122 and the air outlet end 13. That is, the distance between the second cut-off portion 122 of the air inlet end 12 and the air outlet end 13 is the shortest. It can be understood that when the air inlet end 12 is tilted in the direction toward the compressor, the second cut-off portion 122 is arranged close to the compressor, resulting in the second cut-off portion 122 being easily interfered with the components near the compressor; when the air inlet end 12 is tilted in the direction away from the compressor, the second cut-off portion 122 is arranged close to the condenser, resulting in the second cut-off portion 122 being easily interfered with the condenser.

Therefore, by providing the second cut-off portion 122 at this location, it is possible to effectively avoid interference between the air guide ring 1 and other components during installation, thereby facilitating the layout and installation of the air guide ring 1 .

Optionally, as shown in FIGS. 1 to 6 , the surface where the air inlet end 12 is located is parallel to the surface where the end of the guide section 102 close to the wind tube section 101 is located.

For example, the front end of the guide section 102 forms the air inlet end 12 , the rear end of the guide section 102 is arranged close to the air cylinder section 101 , and the front end of the guide section 102 is arranged parallel to the rear end of the guide section 102 .

Therefore, the processing and manufacturing of the air guide section 102 is facilitated, thereby facilitating the processing and manufacturing of the air guide ring 1.

As shown in Fig. 7 and Fig. 8, the outdoor unit of the air conditioner in the embodiment of the present disclosure includes a casing 2 and a fan, the fan is arranged in the casing 2, the fan includes an air guide ring 1 and a plurality of blades 3, the air guide ring 1 is the air guide ring 1 of any of the above embodiments, and at least a part of the blades 3 is arranged in the air guide ring 1. The casing 2 is provided with an air outlet, and the air outlet end 13 is connected to the air outlet.

Since the air guide ring 1 of the embodiment of the present disclosure can improve the aerodynamic performance of the air conditioner outdoor unit, the air conditioner outdoor unit of the embodiment of the present disclosure has advantages such as good performance, etc. Among them, the good performance of the air conditioner outdoor unit includes large air volume, high efficiency, low power, etc.

Optionally, as shown in FIGS. 1 to 8 , a portion of the blade 3 is disposed inside the air guide ring 1, and another portion of the blade 3 is disposed outside the air guide ring 1 and disposed on the side of the air guide ring 1 away from the air outlet end 13. The average coverage rate of the air guide ring 1 is defined as ε, as shown in FIGS. 2 to 5 , the average distance between the air inlet end 12 and the trailing edge 32 of the blade 3 is A, the maximum distance between the leading edge 31 of the blade 3 and the trailing edge 32 of the blade 3 is H, ε=A/H, and ε is 50% to 70%. Wherein, A is equal to the average value of the maximum distance between the air inlet end 12 and the trailing edge 32 of the blade 3 and the minimum distance between the air inlet end 12 and the trailing edge 32 of the blade 3.

For example, the distance between the first cut-off portion 121 of the air inlet end 12 and the trailing edge 32 of the blade 3 is the maximum distance between the air inlet end 12 and the trailing edge 32 of the blade 3, and the distance between the second cut-off portion 122 of the air inlet end 12 and the trailing edge 32 of the blade 3 is the minimum distance between the air inlet end 12 and the trailing edge 32 of the blade 3. A is equal to the average value of the distance between the first cut-off portion 121 of the air inlet end 12 and the trailing edge 32 of the blade 3 and the distance between the second cut-off portion 122 of the air inlet end 12 and the trailing edge 32 of the blade 3.

The coverage rate in Figure 10 is the average coverage rate. As can be seen from Figure 10, the air volume of the air conditioner outdoor unit increases first and then decreases with the increase of coverage rate, reaching the maximum when the coverage rate ε is 57%, and the fan power also increases with the increase of air volume. However, the fan power does not fall back like the air volume after the coverage rate increases further, and even continues to increase slightly. The fan efficiency curve also reaches its peak when the coverage rate is 57%.

Therefore, by setting the average coverage rate of the air guide ring 1 to 50% to 70%, not only the air volume of the air conditioner outdoor unit can be increased, but also the fan efficiency of the air conditioner outdoor unit can be improved, thereby effectively improving the aerodynamic performance of the fan and further improving the aerodynamic performance of the air conditioner outdoor unit.

Optionally, the air conditioner outdoor unit includes a condenser and a compressor, and the condenser and the compressor are both arranged in the casing 2. The condenser includes a first part and a second part, the first part is arranged on a side of the fan away from the air outlet end 13, and the second part and the compressor are respectively arranged on both sides of the radial direction of the air guide ring 1. The air inlet end 12 is arranged tilted in the direction toward the compressor.

For example, as shown in FIG8 , the housing is surrounded by a condenser cavity 201 and a compressor cavity 202, the condenser is arranged in the condenser cavity 201, and the compressor is arranged in the compressor cavity 202. The first part is arranged on the left side of the air guide ring 1, and the compressor is arranged on the right side of the air guide ring 1, and the left and right directions are shown in FIG7 and FIG8 . The air inlet end 12 is arranged tilted to the right.

When the air inlet end 12 is tilted toward the compressor, the tilt angle in Figure 9 is negative. As can be seen from Figure 9, when the air inlet end 12 is tilted toward the compressor, the air volume of the air conditioner outdoor unit is increased, and when the tilt angle is -2.5°, the air volume of the air conditioner outdoor unit reaches the maximum.

Therefore, the air inlet end 12 is arranged tilted toward the compressor, which can effectively increase the air volume of the air conditioner outdoor unit.

Optionally, the air inlet end 12 is symmetrically arranged along the height direction of the air conditioner outdoor unit, wherein the height direction of the air conditioner outdoor unit is perpendicular to the extension direction of the air guide channel 11 and perpendicular to the arrangement direction of the second part and the compressor.

For example, as shown in FIG. 1 , FIG. 6 and FIG. 7 , the height direction of the air conditioner outdoor unit is consistent with the up-down direction, and the air inlet end 12 is symmetrically arranged along the up-down direction.

It can be understood that the air inlet end 12 is arranged at an angle mainly to adjust the airflow state near the compressor side and the airflow state far from the compressor side, and to avoid affecting the airflow state in the height direction of the air conditioner outdoor unit as much as possible. By setting the air inlet end 12 to be symmetrically arranged along the height direction of the air conditioner outdoor unit, the influence on the airflow state in the height direction of the air conditioner outdoor unit can be reduced, and the aerodynamic performance of the air conditioner outdoor unit can be improved.

As shown in Fig. 7 and Fig. 8, the housing 2 includes a top cover 21, a bottom plate 22, a back plate 23 and a partition 24, and an air outlet 231 is provided on the back plate 23. The partition 24 is used to separate the compressor from the condenser. The air conditioner outdoor unit also includes a motor 4 and a grille 5, and the grille 5 is provided at the air outlet 231. The fan includes a hub and a plurality of blades 3, and the plurality of blades 3 are arranged at intervals along the circumference of the hub and connected to the hub, and the motor 4 is used to drive the hub to rotate.

As shown in Figures 11 and 12, when the average coverage rate is 57%, both the air volume and power are increased, so the power curve moves to the upper right, but the power reduction is greater, resulting in the flow efficiency of this scheme being slightly higher than the prototype at the same air volume. The inclination angle of the air guide ring 1 is 12.5°, which is not conducive to the increase of the air volume of the air conditioner outdoor unit, and the power curve shifts to the left as a whole. Moreover, at the same air volume, the fan power and fan efficiency are higher than other schemes. At this time, the pressure rise of the fan is increased, indicating that the pressure resistance of blade 3 is stronger. When the inclination angle of the air guide ring 1 is -2.5°, the air volume of the air conditioner outdoor unit is increased, and the flow efficiency is not reduced at the same air volume. Among them, the prototype in Figures 11 and 12 refers to: the air guide ring of the air conditioner outdoor unit adopts the symmetrically arranged air guide ring in the relevant technology. The best coverage rate refers to: the average coverage rate of the air guide ring 1 is 57%.

Therefore, the air conditioner outdoor unit using the air guide ring 1 of the embodiment of the present disclosure can improve at least one of the air volume, power and efficiency of the air conditioner outdoor unit, thereby improving the overall performance of the air conditioner outdoor unit.

Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present disclosure. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present disclosure.

Claims (10)

1. An air guide ring, characterized in that the air guide ring has an air guide channel, an air inlet end and an air outlet end, the air inlet end and the air outlet end are both connected to the air guide channel, the air inlet end is arranged inclined relative to a preset plane, and the preset plane is perpendicular to the extension direction of the air guide channel. 2 . The air guide ring according to claim 1 , wherein the angle between the air inlet end and the preset plane is 1.5° to 3.5°. 3. The air guide ring according to claim 1 is characterized in that the surface where the air inlet end is located is a plane or an arc surface. 4. The air guide ring according to claim 1, characterized in that the air guide ring comprises an air cylinder section and a flow guide section connected in sequence, an end of the flow guide section away from the air cylinder section forms the air inlet end, and a diameter of the flow guide section gradually increases in a direction away from the air cylinder section; The air inlet end is provided with a first cut-off portion, and the distance between the first cut-off portion and the air outlet end is greater than the distance between any other point of the air inlet end and the air outlet end. 5. The air guide ring according to claim 4 is characterized in that the air inlet end is provided with a second cut-off portion, the second cut-off portion and the first cut-off portion are arranged opposite to each other in the radial direction of the air guide ring, and the distance between the second cut-off portion and the air outlet end is smaller than the distance between any other point of the air inlet end and the air outlet end. 6. The air guide ring according to claim 1, characterized in that the air guide ring comprises an air cylinder section and a flow guide section connected in sequence, an end of the flow guide section away from the air cylinder section forms the air inlet end, and a diameter of the flow guide section gradually increases in a direction away from the air cylinder section; The surface where the air inlet end is located is parallel to the surface where the end of the guide section close to the wind tube section is located. 7. An air conditioner outdoor unit, comprising: A casing, wherein the casing is provided with an air outlet; A fan, wherein the fan is disposed in the casing, the fan comprises an air guide ring and a plurality of blades, the air guide ring is the air guide ring described in any one of claims 1 to 6, at least a portion of the blades are disposed in the air guide ring, and the air outlet end is connected to the air outlet. 8. The air conditioner outdoor unit according to claim 7, characterized in that a part of the blade is arranged inside the air guide ring, and another part of the blade is arranged outside the air guide ring and arranged on a side of the air guide ring away from the air outlet end; The average coverage rate of the air guide ring is ε, the average distance between the air inlet end and the trailing edge of the blade is A, the maximum distance between the leading edge of the blade and the trailing edge of the blade is H, ε=A/H, and ε is 50% to 70%; Wherein, A is equal to the average value of the maximum distance between the air inlet end and the trailing edge of the blade and the minimum distance between the air inlet end and the trailing edge of the blade. 9. The air-conditioning outdoor unit according to claim 7 is characterized in that the air-conditioning outdoor unit includes a condenser and a compressor, the condenser and the compressor are both arranged in the casing, the condenser includes a first part and a second part, the first part is arranged on a side of the fan away from the air outlet end, the second part and the compressor are respectively arranged on both radial sides of the air guide ring, and the air inlet end is arranged inclined along the direction toward the compressor. 10. The air-conditioning outdoor unit according to claim 9 is characterized in that the air inlet end is symmetrically arranged along the height direction of the air-conditioning outdoor unit, wherein the height direction of the air-conditioning outdoor unit is perpendicular to the extension direction of the air guide channel and perpendicular to the arrangement direction of the second part and the compressor.