Air duct assembly and air conditioner having the same

Abstract

The present invention discloses an air duct assembly and an air conditioner having the same. The air duct assembly includes: a housing, an accommodation cavity and a rectification cavity are defined in the housing, one side of the rectification cavity facing the accommodation cavity is open to communicate with the accommodation cavity, an air duct inlet is provided at one end of the accommodation cavity away from the rectification cavity, and a plurality of spaced air outlet holes are provided on the side wall of the rectification cavity; a fan assembly, the fan assembly includes a motor and a centrifugal impeller, the centrifugal impeller is arranged in the accommodation cavity, the accommodation cavity and the rectification cavity are arranged in sequence in the axial direction of the centrifugal impeller, and the output shaft of the motor is connected to the centrifugal impeller. According to the air duct assembly of the present invention, by providing a plurality of spaced air outlet holes on the side wall of the rectification cavity, the wind speed of each air outlet hole can be increased, the air supply distance can be increased, and the needs of users can be met. In addition, the plurality of air outlet holes can disperse the wind to achieve a soft wind feeling.

Description

Technical Field

[0001] The present invention relates to the technical field of air handling equipment, and in particular to an air duct assembly and an air conditioner having the same. Background Art

[0002] In the related art, the air outlet speed of the air duct assembly of the air conditioner is small, and the air supply distance is not far enough, which cannot meet the user's usage requirements. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides an air duct assembly, which realizes axial air inlet and axial air outlet in the axial direction of the impeller and has a long air supply distance.

[0004] The present invention also provides an air conditioner, which includes the above-mentioned air duct assembly.

[0005] The air duct assembly according to an embodiment of the present invention includes: a housing, a receiving cavity and a rectifying cavity are defined in the housing, one side of the rectifying cavity facing the receiving cavity is open to communicate with the receiving cavity, an air duct inlet is provided at one end of the receiving cavity away from the rectifying cavity, and a plurality of spaced air outlet holes are provided on the side wall of the rectifying cavity; a fan assembly, the fan assembly includes a motor and a centrifugal impeller, the centrifugal impeller is arranged in the receiving cavity, the receiving cavity and the rectifying cavity are arranged in sequence in the axial direction of the centrifugal impeller, and the output shaft of the motor is connected to the centrifugal impeller.

[0006] The air duct assembly according to an embodiment of the present invention can improve the air speed of each air outlet hole, increase the air supply distance and meet the user's requirements by defining a receiving cavity and a rectifying cavity in the housing, arranging a centrifugal impeller in the receiving cavity, arranging the receiving cavity and the rectifying cavity in sequence in the axial direction of the centrifugal impeller, providing an air duct inlet at one end of the receiving cavity away from the rectifying cavity, and providing a plurality of spaced air outlet holes on the side wall of the rectifying cavity. In addition, the plurality of air outlet holes can disperse the air to achieve a soft air feeling.

[0007] According to some embodiments of the present invention, the housing includes a first side wall and a second side wall for enclosing the rectifying cavity, one end of the first side wall and one end of the second side wall are spaced apart to communicate with the receiving cavity, the other end of the first side wall and the other end of the second side wall are connected, in the direction from the receiving cavity to the rectifying cavity, the first side wall is inclined towards the second side wall, the air outlet holes are provided on the first side wall, and the plurality of air outlet holes are spaced apart along the length direction of the first side wall.

[0008] According to some embodiments of the present invention, the centrifugal impeller has an impeller inlet opposite to the inlet of the air duct, the diameter of the impeller inlet is D, the total projected area of a plurality of the air outlet holes in a plane perpendicular to the axis of the centrifugal impeller is S, and it satisfies: S < πD 2 / 4.

[0009] According to some embodiments of the present invention, the area enclosed by the outer contour line of each of the air outlet holes can accommodate at least one area of a circle with a diameter of 8 mm.

[0010] In some embodiments of the present invention, each of the air outlet holes extends along the axial direction of the centrifugal impeller.

[0011] In some embodiments of the present invention, in the direction from the accommodation cavity to the rectification cavity, the width of each of the air outlet holes gradually increases.

[0012] According to some embodiments of the present invention, the housing includes a first housing and a second housing connected to each other. The first housing includes a first rectification shell in a cylindrical shape, a second rectification shell in a cylindrical shape, and a baffle. The first rectification shell is disposed around the outer periphery of the baffle and is connected to the baffle. The baffle is located at one end of the first rectification shell adjacent to the second housing. The second rectification shell is disposed around the outer periphery of the first rectification shell, and one end of the second rectification shell adjacent to the second housing and one end of the first rectification shell adjacent to the second housing are spaced apart. One end of the second rectification shell away from the second housing and one end of the first rectification shell away from the second housing are connected. The first rectification shell, the second rectification shell, and the baffle jointly define the rectification cavity. The second housing is in a cylindrical shape and defines the accommodation cavity with the baffle.

[0013] In some embodiments of the present invention, one end of the inner wall surface of the second rectification shell close to the second housing is flush with one end of the inner peripheral wall of the second housing close to the first housing.

[0014] In some embodiments of the present invention, the inner wall surface of the first rectification shell and the surface of the baffle facing the second housing are connected by an arc surface.

[0015] According to some embodiments of the present invention, the distance between the centrifugal impeller and the baffle is 2 - 15 mm.

[0016] According to some embodiments of the present invention, the outer peripheral edge of the centrifugal impeller is flush with one end of the inner wall surface of the first rectification shell close to the second housing.

[0017] According to some embodiments of the present invention, in the direction from the accommodation cavity to the rectification cavity, the width of the rectification cavity gradually decreases.

[0018] According to some embodiments of the present invention, a receiving groove is provided on a side wall of the receiving cavity close to the rectifying cavity, and the motor is disposed in the receiving groove.

[0019] According to some embodiments of the present invention, the motor is disposed outside the housing and connected to the housing, and an output shaft of the motor passes through the air duct inlet and is connected to the centrifugal air wheel.

[0020] An air conditioner according to an embodiment of the present invention includes: a housing, an air inlet passage is defined in the housing, and an air inlet communicating with the air inlet passage is provided on the housing; a heat exchanger, the heat exchanger is disposed in the air inlet passage and opposite to the air inlet; the above-mentioned air duct assembly, the housing is connected to the housing, and the air duct inlet is communicated with the air inlet passage.

[0021] The air conditioner according to the embodiment of the present invention can improve the wind speed of each air outlet hole and the air supply distance by defining a receiving cavity and a rectifying cavity in the housing, and arranging a centrifugal air wheel in the receiving cavity, the receiving cavity and the rectifying cavity are arranged in sequence in the axial direction of the centrifugal air wheel, an air duct inlet is provided at one end of the receiving cavity away from the rectifying cavity, and a plurality of spaced air outlet holes are provided on the side wall of the rectifying cavity, so as to meet the needs of users. In addition, the plurality of air outlet holes can disperse the air to achieve a soft air feeling.

[0022] According to some embodiments of the present invention, the air inlet is opposite to the air duct inlet.

[0023] The additional aspects and advantages of the present invention will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0025] Figure 1 is a perspective view of a partial structure of an air conditioner according to an embodiment of the present invention;

[0026] Figure 2 is a front view of a partial structure of an air conditioner according to an embodiment of the present invention;

[0027] Figure 3 is along Figure 2 the cross-sectional view taken along line C-C in

[0028] Figure 4 is along Figure 2 the cross-sectional view taken along line D-D in

[0029] Figure 5is a side view of a partial structure of an air conditioner according to an embodiment of the present invention;

[0030] Figure 6 is a top view of a partial structure of an air conditioner according to an embodiment of the present invention;

[0031] Figure 7 is a perspective view of a centrifugal impeller according to an embodiment of the present invention;

[0032] Figure 8 is a front view of a centrifugal impeller according to an embodiment of the present invention.

[0033] Reference numerals:

[0034] Air conditioner 100,

[0035] Air duct assembly 10,

[0036] Housing 1, second housing 11, first housing 12, first rectifying housing 121, second rectifying housing 122, baffle 123, accommodating cavity 13, air duct inlet 131, rectifying cavity 14, first side wall 14a, second side wall 14b, air outlet hole 141,

[0037] Fan assembly 2, motor 21, centrifugal impeller 22, impeller inlet 221, impeller disk 222, blades 223, fixing ring 224,

[0038] Machine shell 20, air inlet passage 201, support shell 202, chassis 203,

[0039] Heat exchanger 30. Detailed implementation manners

[0040] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0041] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "inner", "outer", "axial", "radial", "circumferential", etc. is 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0042] The air duct assembly 10 according to an embodiment of the present invention will be described below with reference to the drawings.

[0043] As Figures 1 - 4As shown, the air duct assembly 10 according to an embodiment of the present invention includes a housing 1 and a fan assembly 2.

[0044] Specifically, as Figure 1 and Figure 3 shown, a receiving cavity 13 and a rectifying cavity 14 are defined in the housing 1. Optionally, as Figures 1 - 4 shown, the cross-section of the receiving cavity 13 is circular. Of course, the present invention is not limited thereto, and the cross-section of the receiving cavity 13 may also be oval or polygonal such as quadrilateral. As Figure 3 and Figure 4 shown, one side of the rectifying cavity 14 facing the receiving cavity 13 is open to communicate with the receiving cavity 13. It can be understood that one side of the rectifying cavity 14 facing the receiving cavity 13 is completely open, there is no obstruction between the rectifying cavity 14 and the receiving cavity 13, and the air flow in the receiving cavity 13 can enter the rectifying cavity 14 at any position in the circumferential direction of the rectifying cavity 14.

[0045] As Figure 3 and Figure 4 shown, an air duct inlet 131 is provided at one end of the receiving cavity 13 away from the rectifying cavity 14. Among them, the cross-sectional area of the air duct inlet 131 may be smaller than the cross-sectional area of the receiving cavity 13, and the cross-sectional area of the air duct inlet 131 may also be equal to the cross-sectional area of the receiving cavity 13, that is, one side of the receiving cavity 13 away from the rectifying cavity 14 is completely open to form the air duct inlet 131. The fan assembly 2 includes a motor 21 and a centrifugal impeller 22. The centrifugal impeller 22 is arranged in the receiving cavity 13, and the output shaft of the motor 21 is connected to the centrifugal impeller 22 to drive the centrifugal impeller 22 to rotate. The outer peripheral edge of the centrifugal impeller 22 is spaced apart from the peripheral wall of the receiving cavity 13. The air flow can enter the receiving cavity 13 from the air duct inlet 131, and after the action of the centrifugal impeller 22, it flows out radially from the centrifugal impeller 22 to between the outer peripheral edge of the centrifugal impeller 22 and the peripheral wall of the receiving cavity 13, and then flows into the rectifying cavity 14.

[0046] As Figure 3 and Figure 4 shown, the receiving cavity 13 and the rectifying cavity 14 are arranged in sequence in the axial direction of the centrifugal impeller 22, and a plurality of spaced apart air outlet holes 141 are provided on the side wall of the rectifying cavity 14. During the operation of the air duct assembly 10, the air flow enters from the air duct inlet 131, and under the action of the centrifugal impeller 22, it is pressurized by the centrifugal impeller 22 and then radially thrown out. The thrown high-pressure air flow is then redirected through the receiving cavity 13 and the rectifying cavity 14 and ejected from the air outlet holes 141.

[0047] Among them, the plurality of air outlet holes 141 can achieve small-hole air outlet, improve the air supply distance of the air duct assembly 10. In addition, the plurality of air outlet holes 141 can disperse the air to achieve a soft air feeling.

[0048] In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0049] For the air duct assembly 10 according to an embodiment of the present invention, by defining a receiving cavity 13 and a rectifying cavity 14 in the housing 1, and arranging a centrifugal impeller 22 in the receiving cavity 13, the receiving cavity 13 and the rectifying cavity 14 are arranged in sequence in the axial direction of the centrifugal impeller 22. An air duct inlet 131 is provided at one end of the receiving cavity 13 away from the rectifying cavity 14, and a plurality of spaced air outlet holes 141 are provided on the side wall of the rectifying cavity 14, which can increase the wind speed of each air outlet hole 141, increase the air supply distance, and meet the needs of users. In addition, the plurality of air outlet holes 141 can disperse the air to achieve a soft wind feeling.

[0050] In some embodiments of the present invention, such as Figure 3 and Figure 4 shown, the housing 1 includes a first side wall 14a and a second side wall 14b for enclosing the rectifying cavity 14. One end of the first side wall 14a and one end of the second side wall 14b are spaced apart to communicate with the receiving cavity 13, and the other end of the first side wall 14a and the other end of the second side wall 14b are connected. In the direction from the receiving cavity 13 to the rectifying cavity 14, the first side wall 14a is inclined towards the second side wall 14b, and the air outlet holes 141 are provided on the first side wall 14a. The plurality of air outlet holes 141 are spaced apart along the length direction of the first side wall 14a. Thereby, the air flow in the rectifying cavity 14 can be sent out along the axial direction of the centrifugal impeller 22, realizing the axial air inlet and axial air outlet of the air duct assembly 10. In addition, by providing a plurality of spaced air outlet holes 141, the wind speed of each air outlet hole 141 can be increased, the air supply distance can be increased, and the needs of users can be met.

[0051] Further, the centrifugal impeller 22 has an impeller inlet 221 opposite to the air duct inlet 131. Optionally, the axis of the air duct inlet 131 and the axis of the impeller inlet of the centrifugal impeller 22 can be parallel or coincident. Correspondingly, the axis of the centrifugal impeller 22 is parallel or coincident with the axis of the air duct inlet 131. The diameter of the impeller inlet 221 is D, and the total projected area of the plurality of air outlet holes 141 in a plane perpendicular to the axis of the centrifugal impeller 22 is S, and it satisfies: S < πD 2 / 4. Thereby, the air outlet area of the air duct assembly 10 can be made smaller than the air inlet area, which can increase the air outlet speed at the air outlet holes 141 of the air duct assembly 10 and increase the air supply distance.

[0052] Specifically, according to Q (air volume) = S (area) · V (wind speed), at the same air volume, the smaller the air outlet area, the greater the air outlet wind speed. Therefore, at the same air volume, the wind can be sent farther. When the air duct assembly 10 is applied to the air conditioner 100, it can achieve better cooling or heating effects. At the same time, according to Bernoulli's equation, for an incompressible fluid, there is: ρgh + 0.5ρv2 + p = C, that is: gravitational potential energy + kinetic energy + pressure potential energy = constant. For a gas, the gravitational potential energy can be ignored. Therefore, the greater the kinetic energy, the smaller the pressure. Therefore, for a high-speed jet, a significant low pressure will be formed in the jet area, and this low pressure will form an adsorption and traction effect on the surrounding air, thereby increasing the total air flow rate and further achieving the effect of long-distance air supply.

[0053] It should be noted that, as Figure 7 and Figure 8 shown, the centrifugal impeller 22 generally includes a disk 222, blades 223 and a fixing ring 224. The disk 222 is formed as a circular plate-like structure. There are multiple blades 223. The multiple blades 223 are spaced apart in the circumferential direction of the disk 222. One end of the blade 223 is connected to the disk 222. The fixing ring 224 is spaced apart from the disk 222. The other end of the blade 223 is connected to the fixing ring 224. The space defined by the inner peripheral wall of the fixing ring 224 is the impeller inlet 221.

[0054] In some embodiments of the present invention, the area enclosed by the outer contour line of each air outlet hole 141 can accommodate at least one area of a circle with a diameter of 8 mm. For example, the air outlet hole 141 can be a circular hole with a diameter greater than or equal to 8 mm, or a long strip hole, and there is a position where the width of the long strip hole is greater than or equal to 8 mm to accommodate an area of a circle with a diameter of 8 mm. Thus, long-distance air supply can be achieved.

[0055] Furthermore, as Figure 1 、 Figure 3 and Figure 4 shown, each air outlet hole 141 extends along the axial direction of the centrifugal impeller 22. This facilitates the air flow to be sent out from the air outlet hole 141 along the axial direction of the centrifugal impeller 22, facilitating the user's use and meeting the user's air supply requirements. Even further, as Figure 1 、 Figure 3 and Figure 4As shown, in the direction from the accommodation chamber 13 to the rectification chamber 14, the width of each air outlet hole 141 gradually increases. This further facilitates the air flow to be sent out from the air outlet hole 141 along the axial direction of the centrifugal impeller 22, facilitating the use by the user and meeting the air supply requirements of the user. In addition, since the air flow flows along the outer peripheral wall of the rectification chamber 14 in a direction away from the accommodation chamber 13, impacts one end of the rectification chamber 14 away from the accommodation chamber 13 and then flows towards the air outlet hole 141, and the width of the end of the air outlet hole 141 away from the accommodation chamber 13 is larger, facilitating the air flow to flow out, improving the phenomenon of vortex formation at the air outlet hole 141, and being beneficial to reducing the air outlet noise. For example, in Figure 1 and Figure 4 In the illustrated example, the air outlet hole 141 is generally formed in a water droplet shape.

[0056] In some embodiments of the present invention, as Figure 1 shown, the housing 1 includes a connected first housing 12 and a second housing 11. Specifically, as Figure 3 and Figure 4 shown, the first housing 12 includes a first rectification shell 121 in a cylindrical shape, a second rectification shell 122 in a cylindrical shape, and a baffle 123. The first rectification shell 121 is disposed around the outer periphery of the baffle 123 and the first rectification shell 121 is connected to the baffle 123. The baffle 123 is located at one end of the first rectification shell 121 adjacent to the second housing 11. The second rectification shell 122 is disposed around the outer periphery of the first rectification shell 121, and one end of the second rectification shell 122 adjacent to the second housing 11 and one end of the first rectification shell 121 adjacent to the second housing 11 are spaced apart. One end of the second rectification shell 122 away from the second housing 11 and one end of the first rectification shell 121 away from the second housing 11 are connected. The first rectification shell 121 and the second rectification shell 122 together define the rectification chamber 14. The second housing 11 is in a cylindrical shape, and one end of the second housing 11 close to the first housing 12 is connected to one end of the second rectification shell 122 close to the second housing 11. The second housing 11 and the baffle 123 together define the accommodation chamber 13.

[0057] Among them, the air outlet hole 141 can be provided on the first rectification shell 121 or the second rectification shell 122. For example, in Figure 3 and Figure 4 In the illustrated example, the air outlet hole 141 is provided on the first rectification shell 121.

[0058] Optionally, as Figure 1 , Figure 3 and Figure 4 shown, the first housing 12 and the second housing 11 are arranged along the axial direction of the centrifugal impeller 22. The second housing 11 and the first housing 12 are connected by fasteners or snap connections to jointly define the accommodation chamber 13 and the rectification chamber 14. One end of the second housing 11 away from the first housing 12 has an air duct inlet 131, which facilitates the installation of the fan assembly 2.

[0059] As Figure 3 and Figure 4 shown, the rectifying cavity 14 extends along the circumferential direction of the accommodating cavity 13. Among them, the rectifying cavity 14 can extend along the circumferential direction of the accommodating cavity 13 into a ring shape. Of course, the rectifying cavity 14 can also extend a certain distance along the circumferential direction of the accommodating cavity 13, that is, the rectifying cavity 14 is only provided on a part of the circumferential direction of the accommodating cavity 13. For example, the rectifying cavity 14 can be semi-circular. For example, in Figure 1 the example shown, the rectifying cavity 14 extends along the circumferential direction of the accommodating cavity 13 into a ring shape.

[0060] The cross-section of the rectifying cavity 14 is circular ring-shaped. Of course, the present invention is not limited thereto. The cross-section of the accommodating cavity 13 can also be elliptical or polygonal such as quadrilateral. Correspondingly, the cross-section of the rectifying cavity 14 can be elliptical ring-shaped or polygonal ring-shaped. Of course, the cross-section of the accommodating cavity 13 and the cross-section of the rectifying cavity 14 can have non-corresponding shapes. For example, the cross-section of the accommodating cavity 13 can be circular, and the cross-section of the rectifying cavity 14 can be square. There is no limitation here.

[0061] In some embodiments of the present invention, as Figure 3 and Figure 4 shown, one end of the inner wall surface of the second rectifying shell 122 close to the second shell 11 is flush with one end of the inner circumferential wall of the second shell 11 close to the first shell 12. This facilitates the airflow in the accommodating cavity 13 to flow along the inner wall of the accommodating cavity 13 into the rectifying cavity 14 to realize the change of the airflow direction. In addition, during the airflow movement, the problem of the airflow hitting the wall surface of the accommodating cavity 13 can also be improved, and the noise during the airflow movement can be reduced.

[0062] Furthermore, as Figure 3 and Figure 4 shown, the inner wall surface of the first rectifying shell 121 and the surface of the baffle 123 facing the second shell 11 are connected by an arc surface. The arc surface can play a guiding role in the airflow, and can better guide the airflow into the rectifying cavity 14 and discharge it from the air outlet hole 141.

[0063] Even further, as Figure 3 and Figure 4 shown, the circumferential wall of the accommodating cavity 13 and the end surface of the accommodating cavity 13 far from the rectifying cavity 14 are also connected by an arc surface. Thereby, it can further play a guiding role in the airflow, can better guide the airflow into the rectifying cavity 14, and can reduce the noise during the airflow movement.

[0064] Optionally, as Figure 3 and Figure 4As shown, the distance between the centrifugal impeller 22 and the baffle 123 is 2 - 15 mm, such as 4 mm, 6 mm, 8 mm, 10 mm or 12 mm, etc. This can not only prevent the centrifugal impeller 22 from colliding with the baffle 123, but also prevent the airflow from flowing into the gap between the centrifugal impeller 22 and the baffle 123, resulting in energy loss.

[0065] Further, as Figure 3 and Figure 4 shown, the outer peripheral edge of the centrifugal impeller 22 is flush with the inner wall surface of the first rectifying housing 121 at the end close to the second housing 11. It can be understood that the outer peripheral edge of the baffle 123 is flush with the outer peripheral edge of the centrifugal impeller 22. This can prevent the baffle 123 from blocking the airflow and facilitate the airflow flowing out from the centrifugal impeller 22 to flow into the rectifying cavity 14.

[0066] In some embodiments of the present invention, as Figure 3 and Figure 4 shown, in the direction from the accommodating cavity 13 to the rectifying cavity 14, the width of the rectifying cavity 14 gradually decreases. It can be understood that in the direction from the accommodating cavity 13 to the rectifying cavity 14, the cross-sectional area of the rectifying cavity 14 gradually decreases, and the space of the rectifying cavity 14 gradually decreases, which can increase the pressure of the airflow, improve the air outlet speed of the airflow, and further increase the air supply distance.

[0067] It should be noted that the width of the rectifying cavity 14 refers to the distance between the first side wall 14a and the second side wall 14b.

[0068] Optionally, the inner peripheral wall of the rectifying cavity 14 inclines towards the outer peripheral wall of the rectifying cavity 14 in the direction from the accommodating cavity 13 to the rectifying cavity 14, and / or the outer peripheral wall of the rectifying cavity 14 inclines towards the outer peripheral wall of the rectifying cavity 14 in the direction from the accommodating cavity 13 to the rectifying cavity 14.

[0069] In Figure 3 and Figure 4 the shown example, the inner peripheral wall of the rectifying cavity 14 inclines towards the outer peripheral wall of the rectifying cavity 14 in the direction from the accommodating cavity 13 to the rectifying cavity 14, and a plurality of air outlet holes 141 spaced apart in the circumferential direction of the rectifying cavity 14 are provided on the inner peripheral wall of the rectifying cavity 14. In the direction from the accommodating cavity 13 to the rectifying cavity 14, the outer peripheral wall of the rectifying cavity 14 inclines towards the inner peripheral wall of the rectifying cavity 14. This can enable the airflow in the rectifying cavity 14 to be sent out along the axial direction of the centrifugal impeller 22, realizing axial air inlet and axial air outlet of the air duct assembly 10. In addition, by providing a plurality of spaced-apart air outlet holes 141, the air speed of each air outlet hole 141 can be increased, the air supply distance can be increased, and the needs of users can be met.

[0070] Of course, in the direction from the accommodation chamber 13 to the rectification chamber 14, the outer peripheral wall of the rectification chamber 14 may be parallel to the axis of the centrifugal impeller 22, or may be inclined in a direction away from the inner peripheral wall of the rectification chamber 14.

[0071] In some embodiments of the present invention, a receiving groove is provided on the side wall of the accommodation chamber 13 close to the rectification chamber 14, and the motor 21 is arranged in the receiving groove. This can make the structure of the air duct assembly 10 more compact and reasonable. Of course, the present invention is not limited to this. As Figure 3 and Figure 4 shown, the motor 21 is arranged outside the housing 1 and connected to the housing 1, and the output shaft of the motor 21 passes through the air duct inlet 131 and is connected to the centrifugal impeller 22. This can simplify the structure of the air duct assembly 10 and facilitate the assembly of the air duct assembly 10. Among them, the motor 21 can be directly connected to the housing 1 or indirectly connected.

[0072] The air conditioner 100 according to an embodiment of the present invention will be described below.

[0073] As Figure 1 、 Figure 5 and Figure 6 shown, the air conditioner 100 according to an embodiment of the present invention includes a housing 20, a heat exchanger 30, and the above-mentioned air duct assembly 10.

[0074] Specifically, an air inlet passage 201 is defined in the housing 20, the housing 20 has an air inlet communicating with the air inlet passage 201, the heat exchanger 30 is arranged in the air inlet passage 201 and opposite to the air inlet, the housing 1 is connected to the housing 20, and the air duct inlet 131 communicates with the air inlet passage 201. Air enters the air inlet passage 201 from the air inlet, exchanges heat with the heat exchanger 30 in the air inlet passage 201, the air after heat exchange enters the air duct inlet 131, and enters the impeller inlet 221 under the action of the centrifugal impeller 22. After the centrifugal impeller 22 increases the pressure, it flows out into the accommodation chamber 13 and the rectification chamber 14 for direction change, and finally is discharged from the air outlet hole 141.

[0075] This can make the air flow in the rectification chamber 14 be sent out along the axis of the centrifugal impeller 22, realizing the axial air inlet and axial air outlet of the air duct assembly 10. In addition, by providing a plurality of spaced-apart air outlet holes 141, the air velocity of each air outlet hole 141 can be increased, the air supply distance can be increased, and the needs of users can be met.

[0076] According to the air conditioner 100 of an embodiment of the present invention, by defining an accommodation chamber 13 and a rectification chamber 14 in the housing 1, and arranging a centrifugal impeller 22 in the accommodation chamber 13, the accommodation chamber 13 and the rectification chamber 14 are arranged in sequence in the axial direction of the centrifugal impeller 22, a duct inlet 131 is arranged at one end of the accommodation chamber 13 away from the rectification chamber 14, and a plurality of spaced air outlet holes 141 are arranged on the side wall of the rectification chamber 14, which can increase the air speed of each air outlet hole 141, increase the air supply distance, and meet the needs of users. In addition, the plurality of air outlet holes 141 can disperse the air to achieve a soft air feeling.

[0077] In some embodiments of the present invention, as Figure 1 , Figure 5 and Figure 6 shown, the housing 20 includes a rear housing, a support housing 202 and a chassis 203. The rear housing and the support housing 202 are both arranged on the chassis 203. The rear housing and the support housing 202 are connected to define an air inlet passage 201. The air inlet is arranged on the rear housing. The support housing 202 is connected to the housing 1, and the motor 21 can be arranged on the support housing 202.

[0078] Furthermore, as Figure 3 and Figure 4 shown, the air inlet is opposite to the duct inlet 131. Thus, the air entering the air inlet passage 201 from the air inlet can directly enter the duct inlet 131, reducing the resistance of the air flow during the turning process and reducing the noise during the air flow process.

[0079] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0080] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0081] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. An air duct assembly, characterized in that, it includes: A housing, within which an accommodation cavity and a rectification cavity are defined. One side of the rectification cavity facing the accommodation cavity is open to communicate with the accommodation cavity. An air duct inlet is provided at one end of the accommodation cavity away from the rectification cavity, and a plurality of spaced air outlet holes are provided on the side wall of the rectification cavity; A fan assembly, which includes a motor and a centrifugal impeller. The centrifugal impeller is arranged within the accommodation cavity. The accommodation cavity and the rectification cavity are arranged in sequence in the axial direction of the centrifugal impeller. The output shaft of the motor is connected to the centrifugal impeller, The housing includes a connected first housing and a second housing. The first housing includes a first rectification shell in a cylindrical shape, a second rectification shell in a cylindrical shape, and a baffle. The first rectification shell is arranged around the outer periphery of the baffle and is connected to the baffle. The baffle is located at one end of the first rectification shell adjacent to the second housing. The second rectification shell is arranged around the outer periphery of the first rectification shell, and one end of the second rectification shell adjacent to the second housing and one end of the first rectification shell adjacent to the second housing are spaced apart. One end of the second rectification shell away from the second housing and one end of the first rectification shell away from the second housing are connected. The first rectification shell and the second rectification shell jointly define the rectification cavity. The second housing is in a cylindrical shape and defines the accommodation cavity with the baffle, The outer peripheral edge of the centrifugal impeller is flush with one end of the inner wall surface of the first rectification shell close to the second housing, and the outer peripheral edge of the centrifugal impeller is spaced apart from the peripheral wall of the accommodation cavity.

2. The air duct assembly according to claim 1, characterized in that, The housing includes a first side wall and a second side wall for enclosing the rectification cavity. One end of the first side wall and one end of the second side wall are spaced apart to communicate with the accommodation cavity. The other end of the first side wall and the other end of the second side wall are connected. In the direction from the accommodation cavity to the rectification cavity, the first side wall is inclined towards the second side wall. The air outlet holes are provided on the first side wall, and a plurality of the air outlet holes are spaced apart along the length direction of the first side wall.

3. The air duct assembly according to claim 2, characterized in that, The centrifugal impeller has an impeller inlet opposite to the inlet of the air duct. The diameter of the impeller inlet is D. The total projected area of a plurality of the air outlet holes in a plane perpendicular to the axis of the centrifugal impeller is S, and it satisfies: S < πD 2 / 4.

4. The air duct assembly according to claim 2, characterized in that, The area enclosed by the outer contour line of each air outlet hole can accommodate at least one area of a circle with a diameter of 8 mm.

5. The air duct assembly according to claim 4, characterized in that, Each air outlet hole extends along the axial direction of the centrifugal impeller.

6. The air duct assembly according to claim 5, characterized in that, In the direction from the accommodation cavity to the rectification cavity, the width of each air outlet hole gradually increases.

7. The air duct assembly according to claim 1, characterized in that, One end of the inner wall surface of the second rectification shell close to the second housing is flush with one end of the inner peripheral wall of the second housing close to the first housing.

8. The air duct assembly according to claim 1, characterized in that, The inner wall surface of the first rectifying shell and the surface of the baffle facing the second shell are connected through an arc surface.

9. The air duct assembly according to claim 1, wherein, the distance between the centrifugal impeller and the baffle is 2 - 15 mm.

10. The air duct assembly according to claim 1, wherein, in the direction from the accommodation cavity to the rectifying cavity, the width of the rectifying cavity gradually decreases.

11. The air duct assembly according to claim 1, wherein, a receiving groove is provided on the side wall of the accommodation cavity close to the rectifying cavity, and the motor is arranged in the receiving groove.

12. The air duct assembly according to claim 1, wherein, the motor is arranged outside the shell and connected to the shell, and the output shaft of the motor passes through the air duct inlet and is connected to the centrifugal impeller.

13. An air conditioner, wherein, comprising: a housing, an air inlet passage is defined in the housing, and the housing has an air inlet communicating with the air inlet passage; a heat exchanger, the heat exchanger is arranged in the air inlet passage and opposite to the air inlet; the air duct assembly according to any one of claims 1 - 12, the shell is connected to the housing, and the air duct inlet communicates with the air inlet passage.

14. The air conditioner according to claim 13, wherein, the air inlet is opposite to the air duct inlet.

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