CN116255683A - Air duct assembly and air conditioner - Google Patents

Abstract

The invention provides an air duct assembly and an air conditioner, wherein the air duct assembly comprises: the fan blade can rotate around the rotating shaft, the blowing direction of the fan blade is the front direction, and the leeward direction is the rear direction; the guide ring is fixedly arranged and provided with an air guide cavity; the rotating axis is in line with the central axis of the guide ring, and one end of the fan blade facing the front direction and one end facing the rear direction are both positioned in the air guide cavity. According to the invention, the rotation axis of the fan blade is collinear with the central axis of the guide ring, so that the guide effect of the guide ring on wind blown by the fan blade is ensured, the directional flow of the wind is ensured, and the flow velocity of the wind is further improved; through setting up water conservancy diversion circle cladding fan blade completely for the fan blade can thoroughly cut wind in the wind-guiding chamber of water conservancy diversion circle and do work, the kinetic energy of fan blade converts into the kinetic energy of wind with high efficiency, has increased air-out pressure, has promoted the wind speed, and then has improved the air supply distance of air conditioner, has improved the use travelling comfort and the temperature homogeneity of air conditioner.

Description

Air duct components and air conditioners

technical field

The invention relates to the technical field of air conditioners, in particular to an air duct assembly and an air conditioner.

Background technique

At present, with the rapid development of air-conditioning technology, users have higher and higher requirements for products, and they cannot only be satisfied with ordinary cooling and heating. The existing common air conditioners usually have a short air supply distance due to the low air outlet speed. , especially when the air conditioner is used in a large space, the cold or hot air cannot be sent to a distant place due to the limitation of the air supply distance, resulting in poor overall comfort and temperature uniformity of the air conditioner, which cannot satisfy the user's comfortable experience.

At present, the existing air conditioners, especially vertical air conditioners, generally use axial flow fans, and there is no corresponding wind gathering structure, which has the following disadvantages: the axial flow fans are affected by the blade shape and When doing work, the motor drives the fan blades to rotate, and the wind is thrown out in the direction of rotation, causing the wind blown by the axial flow fan to spread around, and the air supply distance is only 3 to 4 meters, which cannot meet the requirements of long-distance air supply; Under the premise of a large space, the air conditioner cannot send cold or hot air to the remote end, resulting in poor comfort and temperature uniformity.

Contents of the invention

The present invention provides an air duct assembly and an air conditioner to solve the problems in the prior art that the air supply distance of the air conditioner is limited, which further leads to poor comfort and temperature uniformity of the air conditioner.

In order to solve the above problems, according to one aspect of the present invention, the present invention provides an air duct assembly, which is used in an air conditioner. The air duct assembly includes: fan blades, which can rotate around the rotation axis, and The direction is the front direction, and the leeward direction is the rear direction; the guide ring is fixedly installed, and the guide ring has an air guide cavity; wherein, the rotation axis is collinear with the central axis of the guide ring, and the end of the fan blade faces the front direction and the rear One end of the direction is located in the air guide chamber.

Further, the air duct assembly also includes a collection air grill, which is fixedly arranged in the front direction of the guide ring, and is used to collect and blow out the wind blown from the guide ring; the central axis of the heat collection grill and the rotation axis collinear.

Further, the air collecting grid includes: an outer ring body, which is fixedly arranged; an inner ring body, the central axis of the inner ring body coincides with the central axis of the outer ring body, and the radial dimension of the inner ring body is smaller than the radial dimension of the outer ring body Dimensions; arc-shaped ribs, arc-shaped ribs connect the outer ring body and inner ring body, there are multiple arc-shaped ribs, and multiple arc-shaped ribs are distributed along the circumferential direction of the inner ring body; multiple arc-shaped ribs work together to gather the wind blown from the deflector.

Further, the rotation direction of the arc-shaped rib is opposite to the rotation direction of the fan blade.

Further, the guide ring includes a cylinder body and a flaring body arranged on the cylinder body, the cylinder body is arranged in the front direction of the flare body, the cylinder body has an inner cavity, and the flare body has a tapered cavity, the tapered cavity and the inner cavity The cavities are connected to form an air guide cavity, and the size of the tapered cavity gradually decreases from the rear direction to the front direction; wherein, the end of the fan blade facing the front direction is located in the inner cavity, and the end of the fan blade facing the rear direction is located in the tapered cavity.

Further, the ratio of the axial dimension of the blade to the diameter of the blade is set as K, and the value range of K is 0.3-0.5.

Further, there are a plurality of fan blades, and the plurality of fan blades are arranged at intervals along the first direction, and the first direction has an included angle with the front direction; there are a plurality of guide rings, which are respectively arranged in one-to-one correspondence with the plurality of fan blades; There are multiple grids, which are set in one-to-one correspondence with the multiple guide rings.

Further, the air duct assembly also includes a wind sweeping assembly, which is arranged in the front direction of the collecting air grill, and the sweeping assembly adjusts the wind blown out of the collecting air grill along the sweeping direction, and the sweeping direction has a gap with the front direction. horn.

Further, the air duct assembly further includes a guide ring support, the guide ring support has ventilation holes, the guide ring is fixedly arranged on the guide ring support, and the guide ring passes through the ventilation holes.

Further, the air duct assembly also includes a fixed frame and a motor arranged on the fixed frame; the motor is connected with the fan blades and is used to drive the fan blades to rotate.

According to another aspect of the present invention, an air conditioner is provided, and the air conditioner includes the above-mentioned air duct assembly.

Further, the air conditioner also includes: a front panel assembly and a rear shell assembly, the front panel assembly is arranged on the rear shell assembly, the rear shell assembly has an installation cavity, the air duct assembly is arranged in the installation cavity, and the front panel assembly is used to cover the installation cavity , the air blown by the air duct assembly is blown out through the front panel assembly.

Applying the technical solution of the present invention, the present invention provides an air duct assembly, the air duct assembly is used in an air conditioner, the air duct assembly includes: fan blades, the fan blades can rotate around the rotation axis, the blowing direction of the fan blades is the front direction, The leeward direction is the rear direction; the guide ring is fixedly arranged, and the guide ring has a wind guide cavity; wherein, the rotation axis is collinear with the central axis of the guide ring, and the end of the fan blade facing the front direction and the end facing the rear direction are located at In the air duct. In the present invention, by arranging the rotation axis of the fan blades to be in line with the central axis of the guide ring, the guide ring's effect on the flow of the wind blown by the fan blades is ensured, the problem that the air conditioner disperses when the air comes out is alleviated, and the wind is guaranteed. The directional flow reduces the resistance to the wind at the same time, thereby increasing the flow speed of the wind; by setting the front end and the rear end of the fan blades are located in the air guide cavity, that is, the guide ring is completely covered The blades enable the blades to completely cut the wind and do work in the air guide cavity of the guide ring. The kinetic energy of the blades is efficiently converted into the kinetic energy of the wind, which increases the air pressure and wind speed, thereby improving the performance of the air conditioner. The air supply distance improves the comfort and temperature uniformity of the air conditioner, which significantly improves the user experience.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Figure 1 shows an exploded view of the specific structure of the air duct assembly provided by the embodiment of the present invention;

Fig. 2 shows a partial structural cross-sectional view of an air duct assembly provided by an embodiment of the present invention;

Fig. 3 shows a partially enlarged view among Fig. 2;

Fig. 4 shows a schematic diagram of the three-dimensional structure of the collecting air grill provided by the embodiment of the present invention;

Fig. 5 shows the front view in Fig. 4;

Fig. 6 shows the front view of the fan blade provided by the embodiment of the present invention;

Fig. 7 shows the right side view of the fan blade provided by the embodiment of the present invention;

Fig. 8 shows a partial enlarged view of the guide ring bracket provided by the embodiment of the present invention;

Figure 9 shows an exploded view of the specific structure of the air conditioner provided by the embodiment of the present invention;

FIG. 10 shows a schematic diagram of experimental data for the K value provided by the embodiment of the present invention.

Wherein, the above-mentioned accompanying drawings include the following reference signs:

10. Wind blades;

20. Guide ring; 21. Air guide cavity; 22. Cylinder body; 221. Inner cavity; 222. Support ring; 23. Flaring body; 231. Tapered cavity;

30. Gathering grille; 31. Outer ring body; 311. Pin hole; 312. Mounting hole; 313. Annular groove; 32. Inner ring body; 33. Arc ribs;

40. Sweeping component;

50. Guide ring bracket; 51. Locating pin; 52. Threaded hole;

60. Fixed frame;

70. Motor;

80. Front panel assembly;

90, the rear shell assembly; 91, the installation cavity.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

As shown in Fig. 1 to Fig. 10, the embodiment of the present invention provides an air duct assembly, the air duct assembly is used in an air conditioner, the air duct assembly includes: the fan blade 10, the fan blade 10 can rotate around the rotation axis, the fan blade The blowing direction of 10 is the front direction, and the leeward direction is the rear direction; the guide ring 20 is fixedly arranged, and the guide ring 20 has an air guide chamber 21; One end facing the front direction and one end facing the rear direction are both located in the air guiding cavity 21 . (The front and rear directions are the horizontal front and rear directions in Figure 1)

In the present invention, by arranging the rotation axis of the fan blade 10 to be in line with the central axis of the guide ring 20, the flow guide effect of the guide ring 20 on the wind blown by the fan blade 10 is ensured, and the problem that the air conditioner disperses when the air is blown out is alleviated. , to ensure the directional flow of the wind, and reduce the resistance to the wind at the same time, thereby increasing the flow velocity of the wind; by setting the end of the fan blade 10 facing the front direction and the end facing the rear direction are located in the air guide chamber 21, that is, setting The guide ring 20 completely covers the fan blade 10, so that the fan blade 10 can completely cut the wind and do work in the air guide cavity 21 of the guide ring 20, and the kinetic energy of the fan blade 10 is efficiently converted into the kinetic energy of the wind, increasing the output. The wind pressure increases the wind speed, thereby increasing the air supply distance of the air conditioner, improving the comfort and temperature uniformity of the air conditioner, and significantly improving the user experience.

In a specific embodiment of the present invention, as shown in FIG. 1, the fan blade 10 is a fan blade with 5 blades, and may also be a fan blade including other number of blades (for example, a 3-blade fan blade). According to actual use requirements, Flexible settings to achieve better blowing effect.

As shown in Fig. 1, Fig. 2 and Fig. 4, the air duct assembly also includes an air gathering grid 30, which is fixedly arranged in the front direction of the guide ring 20, and is used to gather the wind blown out from the guide ring 20 and blow out; the central axis of the gathering air grille 30 is collinear with the axis of rotation. By arranging the gathering air grille 30, the gathering effect of the wind is improved; by setting the central axis of the gathering air grille 30 to be in line with the rotation axis, the gathering effect of the wind is further improved, and the gathering air gathering grille 30 is reduced. The resistance to the wind alleviates the problem of wind dispersal.

As shown in Fig. 4 and Fig. 5, the collecting air grille 30 comprises: an outer ring body 31, fixedly arranged; an inner ring body 32, the central axis of the inner ring body 32 coincides with the central axis of the outer ring body 31, and the inner ring body The radial dimension of 32 is smaller than the radial dimension of the outer ring body 31; arc-shaped ribs 33, the arc-shaped ribs 33 connect the outer ring body 31 and the inner ring body 32, and the arc-shaped ribs 33 are multiple, and the plurality of arc-shaped ribs The ribs 33 are distributed at intervals along the circumference of the inner ring body 32 ; multiple arc-shaped ribs 33 work together to gather the wind blown from the guide ring 20 . By arranging a plurality of arc-shaped ribs 33, it is ensured that the wind is blown spirally along a certain direction after passing through the air gathering grid 30, which not only improves the directionality of the wind (that is, the characteristic of blowing stably in one direction), but also improves the air flow rate. wind distance.

In a specific embodiment of the present invention, the inner ring body 32 is located in the front direction of the outer ring body 31, and the two are connected by a plurality of arc-shaped ribs 33. In this way, under the condition that the outer contour of the outer ring body 31 is fixed, the comparison The inner ring body 32 is located inside the outer ring body 31 , which effectively increases the length of the arc-shaped ribs 33 , thereby improving the wind-regulating effect of the arc-shaped ribs 33 .

It should be noted that, in another unillustrated embodiment of the present invention, the inner ring body 32 can be a hollow ring body structure or a solid disc structure, which can be flexibly set according to actual use requirements to achieve a better adjustment effect .

In a specific embodiment of the present invention, as shown in FIG. 3 , a support ring 222 is provided on the outer wall of the guide ring 20, and an annular groove 313 is provided on the outer ring body 31. Through the cooperation between the support ring 222 and the annular groove 313, (that is, the support ring 222 penetrates into the annular groove 313 to form a limit fit) which not only facilitates the installation and centering of the air collection grille 30 and the guide ring 20, but also ensures the central axis of the air collection grille 30 and the guide ring 20. The central axis and the rotation axis are collinear, which ensures the reliable cooperation between the air collection grille 30 and the guide ring 20, and avoids the unfavorable phenomenon of air leakage between the air collection grille 30 and the guide ring 20.

As shown in FIG. 5 and FIG. 6 , the rotation direction of the arc-shaped rib 33 is opposite to the rotation direction of the fan blade 10 . This setting further ensures that the wind is blown out from the gathering air grid 30 in a spiral form, and under the condition of constant wind speed, the air supply distance and the directionality of the wind are improved to the greatest extent.

As shown in Figure 2, the guide ring 20 includes a cylinder 22 and a flared body 23 arranged on the cylinder 22, the cylinder 22 is arranged in the front direction of the flared body 23, the cylinder 22 has an inner chamber 221, and the flared The body 23 has a tapered cavity 231, the tapered cavity 231 and the inner cavity 221 are connected to form the wind guide cavity 21, and the size of the tapered cavity 231 gradually decreases from the rear direction to the front direction; wherein, the end of the fan blade 10 facing the front direction is located inside In the cavity 221 , one end of the fan blade 10 facing the rear direction is located in the tapered cavity 231 . This setting not only ensures that the guide ring 20 completely covers the fan blade 10, but also enables the fan blade 10 to completely perform wind cutting work in the air guide cavity 21 of the guide ring 20, and the kinetic energy of the fan blade 10 is efficiently converted into wind. The kinetic energy increases the air outlet pressure, increases the wind speed, and then increases the air supply distance, and by setting the tapered cavity 231 in the flared body 23, it ensures that the air inlet (that is, the rear of the guide ring 20) quickly And smoothly into the wind. Compared with the conventional straight guide ring 20, the structure of the flaring body 23 ensures smoothness and low noise when a large amount of air enters, and effectively improves the flow rate of the air intake.

As shown in FIG. 6 and FIG. 7 , the ratio of the axial dimension of the blade 10 to the diameter of the blade 10 is set as K, and the value range of K is 0.3-0.5. By setting the range of the K value, the air supply efficiency of the fan blade is guaranteed to the maximum under the condition that the speed of the fan blade is constant, which not only improves the energy efficiency, but also ensures that the distance of the wind blown out by it is relatively long, and satisfies the requirement of long-distance air delivery. wind demands.

As shown in Figure 1, there are a plurality of fan blades 10, and the plurality of fan blades 10 are arranged at intervals along the first direction, and the first direction has an included angle with the front direction; One-to-one correspondence arrangement; there are a plurality of gathering air grilles 30, which are arranged in one-to-one correspondence with the plurality of guide rings 20 respectively. By arranging a plurality of fan blades 10, and correspondingly arranging a plurality of guide rings 20 and gathering air grilles 30, the flexibility and adjustability of the air supply of the air duct assembly are improved, the applicability of the air duct assembly is improved, and the Structural support is provided for the subsequent intelligent control of multiple fan blades 10 working individually or in combination.

It should be noted that: in a specific embodiment of the present invention, the first direction is perpendicular to the front direction, that is, the first direction is the vertical up-down direction in FIG. .

As shown in Figure 1, the air duct assembly also includes a sweeping assembly 40, which is arranged on the front direction of the air collecting grill 30, and the sweeping assembly 40 adjusts the wind blown out of the collecting air grill 30 along the sweeping direction, The sweeping direction has an included angle with the front direction. By setting the air sweeping assembly 40, the degree of freedom and adjustment flexibility of the air duct assembly for the air blown out by the air duct assembly are improved, meeting the needs of users for multi-angle air supply adjustment, and improving comfort and applicability.

It should be noted that: in a specific embodiment of the present invention, as shown in FIG. 1 , the sweeping direction is perpendicular to the front direction, that is, the sweeping direction is the left-right direction in FIG. 1 .

As shown in FIG. 1 , the air duct assembly further includes a guide ring support 50 , the guide ring support 50 has a ventilation hole, the guide ring 20 is fixedly arranged on the guide ring support 50 , and the guide ring 20 passes through the ventilation hole. By arranging the guide ring bracket 50, the guide ring 20 is effectively supported, and structural support is provided for the subsequent reliable installation and relative position determination of multiple guide rings 20 .

It should be noted that: in a specific embodiment of the present invention, the guide ring 20 and the guide ring bracket 50 can be designed as a separate structure or an integral injection molding structure, which can be flexibly selected according to actual use requirements and processing requirements.

In a specific embodiment of the present invention, as shown in FIG. 5 and FIG. 8 , the deflector ring bracket 50 is provided with a plurality of positioning pins 51 and a plurality of threaded holes 52 at intervals. A plurality of pin holes 311 and a plurality of installation holes 312 are arranged at intervals, and the plurality of pin holes 311 and the plurality of positioning pins 51 are matched one by one, so as to facilitate the positioning and installation of the collecting air grille 30 on the guide ring bracket 50. After a plurality of pin holes 311 and a plurality of positioning pins 51 are matched one by one, a plurality of threaded holes 52 are matched with a plurality of mounting holes 312 one by one, and the same screws are matched with the threaded holes 52 and the mounting holes 312 in sequence, and the poly style The grid 30 is firmly fixed on the guide ring bracket 50 .

As shown in FIG. 1 , the air duct assembly further includes a fixed frame 60 and a motor 70 disposed on the fixed frame 60 ; the motor 70 is connected with the fan blade 10 for driving the fan blade 10 to rotate. By arranging the motor 70, the adjustability of the rotation of the fan blade 10 is realized, the stability of the rotation of the fan blade 10 is ensured, large fluctuations of the blown wind are avoided, and the comfort is improved.

In a specific embodiment of the present invention, the fan blade 10 is an axial flow fan blade, and the motor 70 is fixedly arranged on the fixed frame 60 by four bolts. The fan blade 10 has an anti-rotation shaft hole. The rotation shaft of the motor is matched, the cross section of the anti-rotation shaft hole (that is, the section perpendicular to the axis) is truncated (for example: a semicircle structure with one side being an arc and the other side being a straight line), and the external shape of the motor rotation shaft matches the anti-rotation shaft hole In order to avoid relative rotation between the motor rotating shaft and the anti-rotation shaft hole;

The present invention also provides an air conditioner, which includes the above-mentioned air duct assembly. The air conditioner proposed by the present invention has long air supply distance, high energy efficiency, low noise, good use comfort and temperature uniformity, and satisfies the comfortable experience of users.

As shown in Figure 9, the air conditioner also includes: a front panel assembly 80 and a rear shell assembly 90, the front panel assembly 80 is arranged on the rear shell assembly 90, the rear shell assembly 90 has an installation cavity 91, and the air duct assembly is arranged in the installation cavity 91 Inside, the front panel assembly 80 is used to cover the installation cavity 91 , and the air blown out by the air duct assembly is blown out through the front panel assembly 80 . This setting not only ensures the simplification of the overall structure of the air conditioner, but also ensures the effective protection of the air duct assembly by the front panel assembly 80 and the rear shell assembly 90 .

It is worth noting that: as shown in Figure 10, the control variable experiment is carried out under the condition of adopting 5-blade fan blades, K=fan blade axial dimension/fan blade diameter, and the specific test K value (horizontal axis in Figure 10) and delivery The corresponding numerical relationship between the wind distance (vertical axis in Figure 10) is as follows:

K value Air supply distance (m) 0.1 7.1 0.2 8.2 0.3 9 0.4 9.3 0.5 9.2 0.6 8.5 0.7 8.3 0.8 8 0.9 7.5

Based on the above data and the analysis in Figure 10, it can be seen that when the value of K ranges from 0.3 to 0.5, the distance of the wind blown out is relatively long, which meets the requirements of long-distance air supply.

To sum up, the present invention provides an air duct assembly and an air conditioner. The present invention ensures that the guide ring 20 is blown out of the air vane 10 The diversion effect of the wind alleviates the problem that the air conditioner disperses when the air comes out, ensures the directional flow of the wind, reduces the resistance to the wind at the same time, and then improves the flow speed of the wind; by setting the fan blade 10 to face the front direction One end and the end facing the rear direction are both located in the air guide chamber 21, that is, the guide ring 20 is set to completely cover the fan blade 10, so that the fan blade 10 can completely cut the wind in the air guide chamber 21 of the guide ring 20. By doing work, the kinetic energy of the fan blade 10 is efficiently converted into the kinetic energy of the wind, which increases the air outlet pressure and wind speed, thereby increasing the air supply distance of the air conditioner, improving the comfort and temperature uniformity of the air conditioner, and making the user The experience has been significantly improved.

It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.

The relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the Authorized Specification. In all examples shown and discussed herein, any specific values should be construed as illustrative only, and not as limiting. Therefore, other examples of the exemplary embodiment may have different values. It should be noted that like numerals and letters denote like items in the following figures, therefore, once an item is defined in one figure, it does not require further discussion in subsequent figures.

In the description of the present invention, it should be understood that orientation words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" etc. indicate the orientation Or positional relationship is generally based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. In the absence of a contrary statement, these orientation words do not indicate or imply the device or element referred to. It must have a specific orientation or be constructed and operated in a specific orientation, so it should not be construed as limiting the protection scope of the present invention; the orientation words "inner and outer" refer to the inner and outer relative to the outline of each component itself.

For the convenience of description, spatially relative terms may be used here, such as "on ...", "over ...", "on the surface of ...", "above", etc., to describe The spatial positional relationship between one device or feature shown and other devices or features. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, devices described as "above" or "above" other devices or configurations would then be oriented "beneath" or "above" the other devices or configurations. under other devices or configurations". Thus, the exemplary term "above" can encompass both an orientation of "above" and "beneath". The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing corresponding components. To limit the protection scope of the present invention.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (12)

1. An air duct assembly for an air conditioner, the air duct assembly comprising:

the fan blade (10) can rotate around the rotating shaft, the blowing direction of the fan blade (10) is the front direction, and the leeward direction is the rear direction;

the guide ring (20) is fixedly arranged, and the guide ring (20) is provided with an air guide cavity (21);

the rotating axis is collinear with the central axis of the guide ring (20), and one end of the fan blade (10) facing the front direction and one end facing the rear direction are both positioned in the air guide cavity (21).

2. The air duct assembly according to claim 1, further comprising an air collecting grille (30), the air collecting grille (30) being fixedly arranged in front of the deflector (20) for collecting and blowing out air blown out from the deflector (20); the central axis of the wind gathering grille (30) is collinear with the rotational axis.

3. The air duct assembly of claim 2, wherein the air collection grille (30) comprises:

an outer ring body (31) fixedly arranged;

the inner ring body (32), the central axis of the inner ring body (32) coincides with the central axis of the outer ring body (31), and the radial dimension of the inner ring body (32) is smaller than the radial dimension of the outer ring body (31);

the arc-shaped ribs (33), wherein the arc-shaped ribs (33) are connected with the outer ring body (31) and the inner ring body (32), the number of the arc-shaped ribs (33) is multiple, and the arc-shaped ribs (33) are distributed at intervals along the circumferential direction of the inner ring body (32); the arcuate ribs (33) cooperate to collect wind from the deflector (20).

4. A wind tunnel assembly according to claim 3, characterised in that the arcuate ribs (33) are rotated in a direction opposite to the direction of rotation of the fan blades (10).

5. The air duct assembly according to claim 1, wherein the deflector ring (20) comprises a cylinder (22) and a flaring body (23) arranged on the cylinder (22), the cylinder (22) is arranged in front of the flaring body (23), the cylinder (22) is provided with an inner cavity (221), the flaring body (23) is provided with a tapering cavity (231), the tapering cavity (231) and the inner cavity (221) are connected to form the air guiding cavity (21), and the dimension of the tapering cavity (231) is gradually reduced from the rear direction to the front direction; one end of the fan blade (10) facing the front direction is located in the inner cavity (221), and one end of the fan blade (10) facing the rear direction is located in the tapered cavity (231).

6. The air duct assembly according to claim 1, characterized in that the ratio of the axial dimension of the fan blade (10) to the diameter of the fan blade (10) is set to K, the value of K being in the range of 0.3-0.5.

7. The air duct assembly according to claim 2, wherein the plurality of fan blades (10) are arranged at intervals along a first direction, and the first direction has an included angle with the front direction; the guide rings (20) are arranged in a plurality and are respectively in one-to-one correspondence with the fan blades (10); the wind gathering grids (30) are arranged in a plurality of one-to-one correspondence with the guide rings (20).

8. The air duct assembly according to claim 2, further comprising a wind sweeping assembly (40), the wind sweeping assembly (40) being arranged in front of the air collecting grille (30), the wind sweeping assembly (40) adjusting the wind blown out by the air collecting grille (30) in a wind sweeping direction, the wind sweeping direction having an angle with the front direction.

9. The air duct assembly of claim 1, further comprising a deflector ring support (50), the deflector ring support (50) having a vent, the deflector ring (20) being fixedly disposed on the deflector ring support (50) and the deflector ring (20) passing through the vent.

10. The air duct assembly of claim 1, further comprising a mount (60) and a motor (70) disposed on the mount (60); the motor (70) is connected with the fan blade (10) and is used for driving the fan blade (10) to rotate.

11. An air conditioner comprising the duct assembly of any one of claims 1 to 10.

12. The air conditioner of claim 11, further comprising: front panel subassembly (80) and backshell subassembly (90), front panel subassembly (80) set up on backshell subassembly (90), backshell subassembly (90) have installation cavity (91), the wind channel subassembly sets up in installation cavity (91), front panel subassembly (80) are used for sheltering from installation cavity (91), the wind that the wind channel subassembly blown out is passed through front panel subassembly (80) blows out.

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