Air duct assembly and air conditioner

Abstract

The invention provides an air duct assembly and an air conditioner, the air duct assembly comprises a first flow guide ring and a second flow guide ring which are coaxially arranged, and the air duct assembly further comprises a flow guide plate assembly, a flow guide plate driving part and a flow guide ring driving part; in the first state, the flow guide plate driving part drives the two flow guide plates to be away from each other, the flow guide ring driving part drives the second flow guide ring to move till the second flow guide ring is in butt joint with the first flow guide ring, and an air outlet channel is formed by the inner circumferential wall of the first flow guide ring and the inner circumferential wall of the second flow guide ring. In the second state, the guide plate driving part drives the two guide plates to get close to each other until the two guide plates are in butt joint, the guide ring driving part drives the second guide ring to be away from the first guide ring, and the inner circumferential wall of the first guide ring, the inner circumferential wall of the guide plate assembly and the inner circumferential wall of the second guide ring form an air outlet channel. The air duct assembly is smooth in air outlet, the length of the air duct flow guide ring can be adjusted according to different instructions in different air speed gear environments, and different use requirements of users are met.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, in particular to an air duct component and an air conditioner. Background Art

[0002] There is an existing air-conditioning outdoor unit, whose fan blades are arranged in a guide ring, and the deep part of the guide ring extends into and covers part of the fan blades, so as to reduce the air volume loss of the outdoor unit's axial fan and increase the air output. There is also an air-conditioning outdoor unit, whose air guide blade group is completely placed in the guide ring, which increases the air volume and enhances the uniformity of the air output, strengthens the heat exchange effect, and improves the capacity of the air-conditioning unit. In fact, the length of the adapted guide ring should be different at different wind speeds. At low speeds, the noise value is lower, and users pay more attention to the sound quality experience of the air conditioner. The use of a longer guide ring is more conducive to enhancing the uniformity of the air output and improving the noise; at high speeds, the heat exchange is accelerated, and users are more pursuing the improvement of the performance of the whole machine. The use of an air guide ring to partially cover the fan blades can reduce the air volume loss and help increase the air volume and improve the heat exchange of the whole machine. However, the lengths of the guide rings of the above two structures are fixed and cannot adapt to the different needs of users in different environments and at different speeds, resulting in a poor user experience.

[0003] Another existing air conditioner outdoor unit features a double-layered air guide ring. The inner ring primarily guides air, while the outer ring is provided with mounting holes. The mounting portion on the front panel is provided with multiple mounting holes. The air guide ring is axially movable by cooperating with the outer ring and the mounting portion to adjust to different mounting holes. This solution has the disadvantage that it can only be moved manually, requiring the removal of bolts and nuts before moving to another hole for assembly. The air guide ring is located inside the air conditioner housing, making it difficult to flexibly adjust to meet different needs. Furthermore, the actual length of the air guide ring has not been increased; it has only been moved a small distance axially inwards and outwards, which has little effect on streamlining the airflow. Furthermore, a step forms at the connection point, disrupting air flow and adversely affecting air guidance. Summary of the Invention

[0004] The first object of the present invention is to provide an air duct assembly that has smooth air outlet and can adjust the length of the air duct guide ring according to different instructions under different wind speed gear environments to adapt to different user requirements.

[0005] A second object of the present invention is to provide an air conditioner using the above-mentioned air duct assembly.

[0006] To achieve the above-mentioned first purpose, the present invention provides an air duct assembly, comprising a first guide ring and a second guide ring arranged coaxially, the first guide ring and the second guide ring being arranged along the axial direction of the air duct assembly; the air duct assembly further comprises a guide plate assembly, a guide plate driving member and a guide ring driving member; the guide plate assembly comprises a first guide plate and a second guide plate both of which are arc-shaped, the first guide plate and the second guide plate being arranged along the radial direction of the air duct assembly and the two can be spliced ​​into a ring shape; in a first state, the guide plate driving member drives the first guide plate and the second guide plate to move away from each other, and the guide ring driving member drives the second guide plate to move away from each other. The guide ring approaches the first guide ring until the second guide ring is docked with the first guide ring, and the inner circumferential wall of the first guide ring and the inner circumferential wall of the second guide ring form an air outlet channel; in the second state, the guide plate driving component drives the first guide plate and the second guide plate to approach each other until the first guide plate and the second guide plate are docked, and the guide ring driving component drives the second guide ring away from the first guide ring, and in the axial direction of the air duct assembly, the first guide ring, the guide plate assembly and the second guide ring are arranged in sequence, and the inner circumferential wall of the first guide ring, the inner circumferential wall of the guide plate assembly and the inner circumferential wall of the second guide ring form an air outlet channel.

[0007] As can be seen from the above scheme, when a high-performance environment is required, the fan runs at high speed, exchanging heat faster. Users are more concerned about improving the performance of the entire machine. By driving the guide plate away from the guide ring, the second guide ring approaches the first guide ring until it docks with the first guide ring, thereby forming a shorter air outlet channel formed by the inner circumferential wall of the first guide ring and the inner circumferential wall of the second guide ring, thereby increasing the air volume. At low fan speeds, the noise level is lower. Users are more concerned about the sound quality experience of the air conditioner. By driving the guide plate toward the guide ring, the second guide ring moves away from the first guide ring until both ends of the guide plate overlap with the first and second guide rings, thereby forming a longer air outlet channel formed by the inner circumferential wall of the first guide ring, the inner circumferential wall of the guide plate assembly, and the inner circumferential wall of the second guide ring. By lengthening the air duct of the external fan, the air outlet uniformity and noise quality are improved. By cooperating with the guide plate assembly and the two guide rings, the length of the air duct can be changed to adapt to different air volume, noise and performance requirements and improve the user experience.

[0008] In addition, the present invention can better achieve a sealed joint between the guide plate and the guide ring and a smooth transition at the joint by providing a guide plate assembly that can be separated and engaged with each other. Compared with the prior art in which the length of the air duct is adjusted by axial movement of the guide ring, the air duct assembly will not form a step at the joint position, thereby making the air outlet smoother and causing no air volume loss.

[0009] A preferred solution is that, in the axial direction of the air duct assembly, a first overlap portion is provided at least at one end of the first guide plate, the first overlap portion protrudes outward from the outer peripheral wall of the first guide plate along the radial direction of the first guide plate, and at least a portion of the first overlap portion extends outward from the axial end of the first guide plate, and the first overlap portion is cooperatively connected with an adjacent guide ring; and / or in the axial direction of the air duct assembly, a second overlap portion is provided at least at one end of the second guide plate, the second overlap portion protrudes outward from the outer peripheral wall of the second guide plate along the radial direction of the second guide plate, and at least a portion of the second overlap portion extends outward from the axial end of the second guide plate, and the second overlap portion is cooperatively connected with an adjacent guide ring.

[0010] It can be seen that by setting the overlap part, the close connection between the guide plate and the guide ring is ensured, the sealing of the air duct is enhanced, and the formation of gaps at the connection position is avoided, causing airflow leakage from the gap position. At the same time, positive feedback can be given to the guide plate drive component to move into place.

[0011] A further solution is that the first overlapping portion extends along the circumference of the first guide plate; and / or the second overlapping portion extends along the circumference of the second guide plate.

[0012] This shows that the sealing performance of the connection position is further improved.

[0013] A further solution is that the first overlap portion extends from a first end on the circumference close to the first guide plate to a second end on the circumference close to the first guide plate; and / or the second overlap portion extends from a first end on the circumference close to the second guide plate to a second end on the circumference close to the second guide plate.

[0014] This shows that the sealing performance of the connection position is further improved.

[0015] A preferred solution is that a first end on the circumference of the first guide plate is provided with a first axial limiting protrusion and a first axial limiting groove arranged along the axial direction of the first guide plate, the first axial limiting protrusion extends outward from the first end wall on the circumference of the first guide plate along the circumference of the first guide plate, and the first axial limiting groove is surrounded by the side wall of the first axial limiting protrusion and the first end wall on the circumference of the first guide plate; the first end on the circumference of the second guide plate is provided with a second axial limiting protrusion and a second axial limiting groove arranged along the axial direction of the second guide plate, the second axial limiting protrusion extends outward from the first end wall on the circumference of the second guide plate along the circumference of the second guide plate, and the second axial limiting groove is surrounded by the side wall of the second axial limiting protrusion and the first end wall on the circumference of the second guide plate; the first axial limiting protrusion is plugged into and matched with the second axial limiting groove, and the second axial limiting protrusion is plugged into and matched with the first axial limiting groove, and the first axial limiting protrusion and the second axial limiting protrusion are engaged along the axial limit of the first guide plate.

[0016] It can be seen that, by plugging and fitting the axial limiting protrusion into the corresponding axial limiting groove, the axial limiting fit of the first guide plate and the second guide plate can be achieved, thereby ensuring the stability of the connection between the two.

[0017] A further solution is that at the first end in the circumferential direction of the first guide plate, the number of at least one of the first axial limit protrusions and the first axial limit grooves is more than two, and the first axial limit protrusions and the first axial limit grooves are arranged alternately along the axial direction of the first guide plate; the second axial limit protrusions and the first axial limit grooves are arranged in a one-to-one correspondence, and the second axial limit grooves and the first axial limit protrusions are arranged in a one-to-one correspondence.

[0018] It can be seen that the provision of multiple axial limiting protrusions can further improve the stability of the connection between the two guide plates.

[0019] A further solution is that the second end in the circumferential direction of the first guide plate is provided with a third axial limiting protrusion and a third axial limiting groove arranged along the axial direction of the first guide plate, the third axial limiting protrusion extends outward from the second end wall in the circumferential direction of the first guide plate along the circumference of the first guide plate, and the third axial limiting groove is surrounded by the side wall of the third axial limiting protrusion and the second end wall in the circumferential direction of the first guide plate; the second end in the circumferential direction of the second guide plate is provided with a fourth axial limiting protrusion arranged along the axial direction of the second guide plate. The limiting protrusion and the fourth axial limiting groove, the fourth axial limiting protrusion extends outward from the second end wall on the circumference of the second guide plate along the circumference of the second guide plate, and the fourth axial limiting groove is surrounded by the side wall of the fourth axial limiting protrusion and the second end wall on the circumference of the second guide plate; the third axial limiting protrusion is plug-fitted with the fourth axial limiting groove, the fourth axial limiting protrusion is plug-fitted with the third axial limiting groove, and the third axial limiting protrusion and the fourth axial limiting protrusion are plug-fitted along the axial limit of the first guide plate.

[0020] It can be seen that both ends of the guide plate in the circumferential direction are provided with axial limiting protrusions, which can ensure the force balance at both ends of the guide plate and ensure the stability of the axial limit.

[0021] A further solution is that the first axial limit protrusion and the third axial limit groove are arranged opposite to each other along the radial direction of the first guide plate, and the first axial limit groove and the third axial limit protrusion are arranged opposite to each other along the radial direction of the first guide plate; and / or the second axial limit protrusion and the fourth axial limit groove are arranged opposite to each other along the radial direction of the second guide plate, and the second axial limit groove and the fourth axial limit protrusion are arranged opposite to each other along the radial direction of the second guide plate.

[0022] It can be seen that the staggered arrangement of the axial limiting protrusions at both ends of the guide plate can ensure that the guide plate is subjected to balanced force.

[0023] A preferred solution is that the first end on the circumference of the first guide plate is also provided with a first radial limiting protrusion, the first radial limiting protrusion and the first axial limiting groove are arranged opposite to each other along the radial direction of the first guide plate, at least a portion of the first radial limiting protrusion extends from the first end wall on the circumference of the first guide plate toward the first axial limiting groove along the circumference of the first guide plate, and the first radial limiting protrusion and the second axial limiting protrusion cooperate along the radial limitation of the first guide plate; and / or the first end on the circumference of the second guide plate is also provided with a second radial limiting protrusion, the second radial limiting protrusion and the second axial limiting groove are arranged opposite to each other along the radial direction of the second guide plate, at least a portion of the second radial limiting protrusion extends from the first end wall on the circumference of the second guide plate toward the second axial limiting groove along the circumference of the second guide plate, and the second radial limiting protrusion and the first axial limiting protrusion cooperate along the radial limitation of the second guide plate.

[0024] It can be seen that when the two guide plates are connected, the radial limiting protrusion can limit the axial limiting protrusion in the radial direction, thereby improving the stability of the connection position of the two guide plates.

[0025] A preferred solution is that a driving part is provided on the outer wall of the second guide ring, and the guide ring driving part includes a driving body and a driving rod, the driving rod extends along the axial direction of the air duct assembly, the driving body is relatively fixed to the first guide ring, the driving body can drive the driving rod to rotate, and the driving rod is threadedly connected to the driving part.

[0026] It can be seen that after the driving body drives the driving rod to rotate, since the driving rod is threadedly connected to the driving part, it can drive the second guide ring to approach or move away from the first guide ring along the axial direction of the air duct assembly.

[0027] A preferred solution is that there are more than two driving parts, each driving part is arranged at intervals along the circumference of the second guide ring, the number of guide ring driving elements is the same as the number of driving parts, and the guide ring driving elements and driving parts are arranged one-to-one.

[0028] It can be seen that the multiple driving parts and the guide ring driving parts are arranged on both sides of the guide ring, ensuring that the guide ring is subjected to balanced forces in the radial direction, thereby driving the second guide ring to move more stably.

[0029] A preferred solution is that the deflector drive includes a first drive member, a first gear, a second drive member and a second gear; a first rack is also provided on the outer peripheral wall of the first deflector, and the extension direction of the first rack is parallel to the arrangement direction of the first deflector and the second deflector, the first gear is driven and connected to the first rack, the first drive member drives the first gear to rotate, the first gear drives the first rack to move, and the first rack drives the first deflector to move along the radial direction of the air duct assembly; a second rack is also provided on the outer peripheral wall of the second deflector, the second rack is colinearly arranged with the first rack, the second gear is driven and connected to the second rack, the second drive member drives the second gear to rotate, the second gear drives the second rack to move, and the second rack drives the second deflector to move along the radial direction of the air duct assembly.

[0030] It can be seen that the movement of the guide plate is achieved through the cooperation of the driving member, the gear and the corresponding rack, thereby achieving the switching of the two air ducts.

[0031] A preferred solution is that the connection between the inner circumferential wall of the first guide ring and the inner circumferential wall of the guide plate assembly has a smooth transition, and the connection between the inner circumferential wall of the guide plate assembly and the inner circumferential wall of the second guide ring has a smooth transition.

[0032] This shows that the formation of steps at the connection position between the guide ring and the guide plate is further avoided, which would affect the air outlet effect.

[0033] To achieve the above second objective, the present invention provides an air conditioner, comprising a fan blade and the above air duct assembly, wherein the fan blade is located in the air outlet channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a structural diagram from a first perspective of the first embodiment of the air conditioner of the present invention with some components hidden.

[0035] Figure 2 This is a structural diagram from a second perspective of the first embodiment of the air conditioner of the present invention with some components hidden.

[0036] Figure 3 It is a structural exploded view of the air duct assembly in the first embodiment of the air conditioner of the present invention.

[0037] Figure 4 1 is a positional relationship diagram of various components of the air duct assembly in the second state of the first embodiment of the air conditioner of the present invention.

[0038] Figure 5 1 is a positional relationship diagram of various components of the air duct assembly in the first state of the first embodiment of the air conditioner of the present invention.

[0039] Figure 6 1 is a structural diagram of the first guide plate in the first embodiment of the air conditioner of the present invention.

[0040] Figure 7It is a structural diagram of the second guide ring in the first embodiment of the air conditioner of the present invention.

[0041] Figure 8 It is a cross-sectional view of the air duct assembly of the air conditioner according to the first embodiment of the present invention in the second state.

[0042] Figure 9 yes Figure 8 A partial enlarged view of point A in the middle.

[0043] Figure 10 It is a cross-sectional view of the air duct assembly of the first embodiment of the air conditioner of the present invention in the first state.

[0044] Figure 11 yes Figure 10 A partial enlarged view of point B in the middle.

[0045] Figure 12 1. It is a structural diagram of the joint position of two guide plates in the second state of the first embodiment of the air conditioner of the present invention.

[0046] Figure 13 1. It is a structural diagram of the joint position of two guide plates in the second state of the second embodiment of the air conditioner of the present invention.

[0047] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0048] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present invention, its application, or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully convey the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0049] The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are simply used to distinguish different parts. Terms such as "include" or "comprising" mean that the elements preceding the term include the elements listed after the term, and do not exclude the possibility of also including other elements. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0050] In the present invention, when a specific device is described as being located between a first device and a second device, an intervening device may or may not be present between the specific device and the first device or the second device. When a specific device is described as being connected to another device, the specific device may be directly connected to the other device without an intervening device, or may be directly connected to the other device but with an intervening device.

[0051] All terms (including technical or scientific terms) used in the present invention have the same meaning as those understood by ordinary technicians in the field, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having the meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0052] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0053] Air duct assembly and air conditioner first embodiment: See also Figures 1 to 3 The air conditioner of this embodiment is a split-type air conditioner, which includes an air conditioner outdoor unit and an air conditioner indoor unit connected to each other. In other embodiments, the air conditioner can also be an integrated air conditioner.

[0054] The air conditioner outdoor unit includes an outer shell 1 and a fan 2 and an air duct assembly 3 located inside the outer shell 1. The fan 2 includes a motor 21 and fan blades 22. The motor 21 is supported on a bracket 11 fixed inside the outer shell 1. The fan blades 22 are connected to the drive shaft of the motor 21 and are located in the air outlet channel 30 of the air duct assembly 3.

[0055] The air duct assembly 3 includes a first guide ring 4 , a second guide ring 5 , a guide plate assembly 6 , a guide plate driver 7 and a guide ring driver 8 .

[0056] The first guide ring 4, the second guide ring 5, and the guide plate assembly 6 are coaxially arranged. The first guide ring 4 and the second guide ring 5 are arranged along the axial direction of the air duct assembly 3. The first guide ring 4 is fixedly mounted on the housing 1. The guide plate assembly 6 includes a first guide plate 61 and a second guide plate 62, both of which are arc-shaped. The first guide plate 61 and the second guide plate 62 are arranged along the radial direction of the air duct assembly 3 and can be spliced ​​into a ring shape. In this embodiment, the two guide plates are arranged in the vertical direction.

[0057] See also Figure 5 、 Figure 10 and Figure 11In the first state, the guide plate driving component 7 drives the first guide plate 61 and the second guide plate 62 to move away from each other, and the guide ring driving component 8 drives the second guide ring 5 to approach the first guide ring 4 until the second guide ring 5 is docked with the first guide ring 4, and the inner circumferential wall of the first guide ring 4 and the inner circumferential wall of the second guide ring 5 form an air outlet channel 30.

[0058] See also Figure 4 、 Figures 7 to 9 In the second state, the deflector driver 7 drives the first deflector 61 and the second deflector 62 toward each other until the first deflector 61 and the second deflector 62 are docked. The deflector ring driver 8 drives the second deflector ring 5 away from the first deflector ring 4. In the axial direction of the air duct assembly 3, the first deflector ring 4, the deflector assembly 6, and the second deflector ring 5 are arranged in sequence. The inner circumferential wall of the first deflector ring 4, the inner circumferential wall of the deflector assembly 6, and the inner circumferential wall of the second deflector ring 5 form the air outlet channel 30. The width of the air outlet channel 30 can be adjusted by adjusting the width of the first deflector 61 and the second deflector 62 in the axial direction of the deflector assembly 6.

[0059] The connection between the inner circumferential wall of the first guide ring 4 and the inner circumferential wall of the guide plate assembly 6 is smooth, and the connection between the inner circumferential wall of the guide plate assembly 6 and the inner circumferential wall of the second guide ring 5 is smooth. This avoids the formation of a step at the connection between the guide ring and the guide plate, which would affect the air outlet effect. Specifically, in this embodiment, the first guide ring 4 includes a first columnar portion 41 and a first flared portion 42 arranged along the axial direction of the first guide ring 4. The inner diameter of the first flared portion 42 gradually increases from the end close to the first columnar portion 41 to the end away from the first columnar portion 41. The second guide ring 5 includes a second columnar portion 51 and a second flared portion 52 arranged along the axial direction of the second guide ring 5. The inner diameter of the second flared portion 52 gradually increases from the end close to the second columnar portion 51 to the end away from the second columnar portion 51. The guide plate assembly 6 is cylindrical, and the first columnar portion 41, the guide plate assembly 6 and the second columnar portion 51 are connected in sequence, and the inner diameters of the first columnar portion 41, the inner diameters of the guide plate assembly 6 and the second columnar portion 51 are all equal.

[0060] See also Figure 4 and Figure 6 In the axial direction of the air duct assembly 3, a first overlapping portion 611 is provided at at least one end of the first guide plate 61. In this embodiment, a first overlapping portion 611 is provided at both ends of the first guide plate 61. The first overlapping portion 611 protrudes outward from the outer peripheral wall of the first guide plate 61 along the radial direction of the first guide plate 61, and at least a portion of the first overlapping portion 611 extends outward from the axial end of the first guide plate 61. The first overlapping portion 611 is cooperatively connected with the adjacent guide ring.

[0061] In the axial direction of the air duct assembly 3, at least one end of the second deflector plate 62 is provided with a second overlapping portion 621. In this embodiment, both ends of the second deflector plate 62 are provided with a first overlapping portion 621. The second overlapping portion 621 protrudes outward from the outer peripheral wall of the second deflector plate 62 in the radial direction of the second deflector plate 62, and at least a portion of the second overlapping portion 621 extends outward from the axial end of the second deflector plate 62. The second overlapping portion 621 is cooperatively connected with the adjacent deflector ring. The provision of the overlapping portion ensures a tight connection between the deflector plate and the deflector ring, enhances the sealing of the air duct, avoids the formation of a gap at the connection position, and prevents airflow leakage from the gap position. At the same time, it can provide positive feedback to ensure that the deflector drive member 7 moves into position.

[0062] The first overlapping portion 611 extends along the circumference of the first guide plate 61, and the first overlapping portion 611 extends from a first end on the circumference of the first guide plate 61 to a second end on the circumference of the first guide plate 61. The second overlapping portion 621 extends along the circumference of the second guide plate 62, and the second overlapping portion 621 extends from a first end on the circumference of the second guide plate 62 to a second end on the circumference of the second guide plate 62. In other embodiments, at least one end of the first guide plate 61 may be provided with two or more first overlapping portions 611, each of which is spaced apart along the circumference of the first guide plate 61. At least one end of the second guide plate 62 may be provided with two or more second overlapping portions 621, each of which is spaced apart along the circumference of the second guide plate 62. The width and length of the first overlapping portion 611 and the second overlapping portion 621 may be changed as needed.

[0063] See also Figures 4 to 6 as well as Figure 12 The first circumferential end of the first guide plate 61 is provided with a first axial limiting protrusion 612 and a first axial limiting groove 613 arranged along the axial direction of the first guide plate 61. The first axial limiting protrusion 612 extends outward from the first end wall on the circumferential direction of the first guide plate 61 along the circumference of the first guide plate 61, and the first axial limiting groove 613 is surrounded by the side wall of the first axial limiting protrusion 612 and the first end wall on the circumferential direction of the first guide plate 61.

[0064] A second axial limiting protrusion 622 and a second axial limiting groove 623 are provided at the first circumferential end of the second guide plate 62, arranged along the axial direction of the second guide plate 62. The second axial limiting protrusion 622 extends outward from the first circumferential end wall of the second guide plate 62 along the circumference of the second guide plate 62. The second axial limiting groove 623 is bounded by the sidewall of the second axial limiting protrusion 622 and the first circumferential end wall of the second guide plate 62. The first axial limiting protrusion 612 engages with the second axial limiting groove 623, and the second axial limiting protrusion 622 engages with the first axial limiting groove 613. The first axial limiting protrusion 612 and the second axial limiting protrusion 622 engage with each other in the axial direction of the first guide plate 61. The engagement of the axial limiting protrusions with the corresponding axial limiting grooves enables axial limiting engagement between the first guide plate 61 and the second guide plate 62, ensuring the stability of the connection between the two.

[0065] The second circumferential end of the first guide plate 61 is provided with a third axial limiting protrusion 614 and a third axial limiting groove 615 arranged along the axial direction of the first guide plate 61. The third axial limiting protrusion 614 extends outward from the second end wall on the circumferential direction of the first guide plate 61 along the circumference of the first guide plate 61, and the third axial limiting groove 615 is surrounded by the side wall of the third axial limiting protrusion 614 and the second end wall on the circumferential direction of the first guide plate 61.

[0066] The second circumferential end of the second guide plate 62 is provided with a fourth axial limiting protrusion 624 and a fourth axial limiting groove 625 arranged along the axial direction of the second guide plate 62. The fourth axial limiting protrusion 624 extends outward from the second circumferential end wall of the second guide plate 62 along the circumference of the second guide plate 62. The fourth axial limiting groove 625 is bounded by the sidewall of the fourth axial limiting protrusion 624 and the second circumferential end wall of the second guide plate 62. The third axial limiting protrusion 614 is plugged into the fourth axial limiting groove 625, and the fourth axial limiting protrusion 624 is plugged into the third axial limiting groove 615. The third axial limiting protrusion 614 and the fourth axial limiting protrusion 624 cooperate with each other to axially limit the first guide plate 61. The axial limiting protrusions at both ends of the guide plate ensure balanced force at both ends of the guide plate and the stability of the axial limiting.

[0067] The first axial limiting protrusion 612 and the third axial limiting groove 615 are arranged opposite each other along the radial direction of the first guide plate 61, while the first axial limiting groove 613 and the third axial limiting protrusion 614 are arranged opposite each other along the radial direction of the first guide plate 61. The second axial limiting protrusion 622 and the fourth axial limiting groove 625 are arranged opposite each other along the radial direction of the second guide plate 62, while the second axial limiting groove 623 and the fourth axial limiting protrusion 624 are arranged opposite each other along the radial direction of the second guide plate 62. The staggered arrangement of the axial limiting protrusions at both ends of the guide plate ensures balanced force on the guide plate.

[0068] At the same time, a first radial limiting protrusion 616 is also provided at the first end in the circumferential direction of the first guide plate 61. The first radial limiting protrusion 616 and the first axial limiting groove 613 are arranged opposite to each other along the radial direction of the first guide plate 61. At least a part of the first radial limiting protrusion 616 extends from the first end wall in the circumferential direction of the first guide plate 61 toward the first axial limiting groove 613 along the circumference of the first guide plate 61. The first radial limiting protrusion 616 and the second axial limiting protrusion 622 cooperate with each other along the radial limitation of the first guide plate 61.

[0069] A second radial limiting protrusion 626 is further provided at the first end in the circumferential direction of the second guide plate 62. The second radial limiting protrusion 626 and the second axial limiting groove 623 are arranged opposite each other along the radial direction of the second guide plate 62. At least a portion of the second radial limiting protrusion 626 extends along the circumference of the second guide plate 62 from the first end wall in the circumferential direction of the second guide plate 62 toward the second axial limiting groove 623. The second radial limiting protrusion 626 cooperates with the first axial limiting protrusion 612 to limit the radial direction of the second guide plate 62. When the two guide plates are joined, the radial limiting protrusion can limit the axial limiting protrusion in the radial direction, thereby improving the stability of the connection between the two guide plates.

[0070] In addition, a third radial limiting protrusion 618 is provided at the second end in the circumferential direction of the first guide plate 61. The third radial limiting protrusion 618 is used to cooperate with the fourth axial limiting protrusion 624 for radial limiting along the first guide plate 61. A fourth radial limiting protrusion 628 is also provided at the second end in the circumferential direction of the second guide plate 62. The fourth radial limiting protrusion 628 is used to cooperate with the third axial limiting protrusion 614 for radial limiting along the second guide plate 61.

[0071] The outer wall of the second guide ring 5 is provided with a driving portion 53. The guide ring driving member 8 includes a driving body 81 and a driving rod 82. The driving body 81 is a motor, and the driving rod 82 extends along the axial direction of the air duct assembly 3. The driving body 81 is relatively fixed to the first guide ring 4. The driving body 81 can drive the driving rod 82 to rotate. The driving rod 82 is threadedly connected to the driving portion 53. After the driving body 81 drives the corresponding driving rod 82 to rotate, because the driving rod 82 is threadedly connected to the corresponding driving portion 53, it can drive the second guide ring 5 along the axial direction of the air duct assembly 3 toward or away from the first guide ring 4.

[0072] In this embodiment, there are two drive units 53, which are arranged radially opposite to each other along the second guide ring 5 and horizontally opposite to each other on the outer circumferential wall of the second guide ring 5. The drive units 53 are annular in shape, and the number of guide ring drivers 8 is the same as the number of drive units 53, with each drive unit 8 corresponding to the other. In other embodiments, the number of drive units 53 and the number of guide ring drivers 8 can each be one, or the number of drive units 53 and the number of guide ring drivers 8 can each be two or more. The drive units 53 are evenly arranged along the circumference of the second guide ring 5, and the number of guide ring drivers 8 is the same as the number of drive units 53, with each drive unit 8 corresponding to the other. The even arrangement of multiple drive units 53 and guide ring drivers 8 along the circumference of the guide ring ensures balanced radial force on the guide ring, thereby driving the second guide ring 5 to move more stably.

[0073] The deflector drive 7 includes a first drive member 71, a first gear 72, a second drive member 73, and a second gear 74. The first drive member 71 and the second drive member 73 are both motors. A first rack 617 is also provided on the outer peripheral wall of the first deflector 61. The first rack 617 extends parallel to the arrangement direction of the first deflector 61 and the second deflector 62. The first gear 72 is drivingly connected to the first rack 617. The first drive member 71 drives the first gear 72 to rotate, which in turn drives the first rack 617 to move. The first rack 617 then drives the first deflector 61 to move radially along the air duct assembly 3. A second rack 627 is also provided on the outer peripheral wall of the second guide plate 62. The second rack 627 is arranged colinearly with the first rack 617. The second gear 74 is driven and connected to the second rack 627. The second driving member 73 drives the second gear 74 to rotate. The second gear 74 drives the second rack 627 to move. The second rack 627 drives the second guide plate 62 to move radially along the air duct assembly 3.

[0074] As can be seen from the above, when a high-performance environment is required, the fan runs at high speed, exchanging heat faster. Users are more concerned about improving the performance of the entire machine. By driving the deflector away from the guide ring, the second guide ring approaches the first guide ring until it connects with the first guide ring, thereby forming a shorter air outlet channel formed by the inner circumference of the first guide ring and the inner circumference of the second guide ring, thereby increasing the air volume. At low fan speeds, the noise level is lower. Users are more concerned about the sound quality experience of the air conditioner. By driving the deflector toward the guide ring, the second guide ring moves away from the first guide ring until both ends of the deflector overlap with the first and second guide rings, thereby forming a longer air outlet channel formed by the inner circumference of the first guide ring, the inner circumference of the deflector assembly, and the inner circumference of the second guide ring. By lengthening the air duct of the external fan, the air outlet uniformity and noise quality are improved. By cooperating with the guide plate assembly and the two guide rings, the length of the air duct can be changed to adapt to different air volume, noise and performance requirements and improve the user experience.

[0075] In addition, the present invention can better achieve a sealed joint between the guide plate and the guide ring and a smooth transition at the joint by providing a guide plate assembly that can be separated and engaged with each other. Compared with the prior art in which the length of the air duct is adjusted by axial movement of the guide ring, the air duct assembly will not form a step at the joint position, thereby making the air outlet smoother and causing no air volume loss.

[0076] Second embodiment of the air duct assembly and the air conditioner: As an explanation of the second embodiment of the air duct assembly of the present invention, only the differences from the first embodiment of the air duct assembly are described below.

[0077] See also Figure 13 In this embodiment, at the first end in the circumferential direction of the first guide plate 261, at least one of the first axial limiting protrusions 2612 and the first axial limiting grooves 2613 is provided at least two, and the first axial limiting protrusions 2612 and the first axial limiting grooves 2613 are alternately arranged along the axial direction of the first guide plate 261. The second axial limiting protrusions 2622 are provided in a one-to-one correspondence with the first axial limiting grooves 2613, and the second axial limiting grooves 2623 are provided in a one-to-one correspondence with the first axial limiting protrusions 2612. Optionally, in this embodiment, the number of the first axial limiting protrusions 2612 and the number of the second axial limiting grooves 2623 are both three, and the number of the first axial limiting grooves 2613 and the number of the second axial limiting protrusions 2622 are both three. The provision of multiple axial limiting protrusions can further improve the stability of the connection between the two guide plates.

[0078] In the axial direction of the first guide plate 261, the first radial limiting protrusion 2616 extends from the first first axial limiting groove 2613 to the last first axial limiting groove, ensuring that each second axial limiting protrusion 2622 can form a radial limit with the first radial limiting protrusion 616. Similarly, in the axial direction of the second guide plate 262, the second radial limiting protrusion 2626 extends from the first second axial limiting groove 2623 to the last second axial limiting groove 2623.

[0079] Finally, it should be emphasized that the above 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 changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An air duct assembly, comprising a first guide ring and a second guide ring arranged coaxially, wherein the first guide ring and the second guide ring are arranged along the axial direction of the air duct assembly; Its characteristics are: The air duct assembly further includes a deflector assembly, a deflector driving component and a deflector ring driving component; The deflector assembly includes a first deflector and a second deflector, both of which are arc-shaped. The first deflector and the second deflector are arranged along the radial direction of the air duct assembly and can be spliced ​​into a ring shape. In the first state, the deflector plate driving member drives the first deflector plate and the second deflector plate to move away from each other, and the deflector ring driving member drives the second deflector ring to move closer to the first deflector ring until the second deflector ring is docked with the first deflector ring, and the inner circumferential wall of the first deflector ring and the inner circumferential wall of the second deflector ring form an air outlet channel; In the second state, the guide plate driving component drives the first guide plate and the second guide plate to approach each other until the first guide plate is docked with the second guide plate, and the guide ring driving component drives the second guide ring away from the first guide ring. In the axial direction of the air duct assembly, the first guide ring, the guide plate assembly and the second guide ring are arranged in sequence, and the inner circumferential wall of the first guide ring, the inner circumferential wall of the guide plate assembly and the inner circumferential wall of the second guide ring form an air outlet channel.

2. The air duct assembly according to claim 1, wherein: In the axial direction of the air duct assembly, a first overlapping portion is provided at at least one end of the first guide plate, the first overlapping portion protruding outward from the outer peripheral wall of the first guide plate along the radial direction of the first guide plate, and at least a portion of the first overlapping portion extends outward from the axial end of the first guide plate, and the first overlapping portion is cooperatively connected with the adjacent guide ring; and / or In the axial direction of the air duct assembly, a second overlapping portion is provided at at least one end of the second guide plate, the second overlapping portion protrudes outward from the outer peripheral wall of the second guide plate along the radial direction of the second guide plate, and at least a portion of the second overlapping portion extends outward from the axial end of the second guide plate, and the second overlapping portion is cooperatively connected with the adjacent guide ring.

3. The air duct assembly according to claim 2, wherein: The first overlapping portion extends along the circumference of the first guide plate; and / or The second overlapping portion extends along the circumference of the second guide plate.

4. The air duct assembly according to claim 3, wherein: The first overlapping portion extends from a first end in the circumferential direction close to the first guide plate to a second end in the circumferential direction close to the first guide plate; and / or The second overlapping portion extends from a first end in the circumferential direction close to the second guide plate to a second end in the circumferential direction close to the second guide plate.

5. The air duct assembly according to any one of claims 1 to 4, characterized in that: A first axial limiting protrusion and a first axial limiting groove are provided at a first end in the circumferential direction of the first guide plate, and are arranged along the axial direction of the first guide plate. The first axial limiting protrusion extends outward from a first end wall in the circumferential direction of the first guide plate along the circumferential direction of the first guide plate. The first axial limiting groove is surrounded by a side wall of the first axial limiting protrusion and the first end wall in the circumferential direction of the first guide plate. A second axial limiting protrusion and a second axial limiting groove are provided at a first end in the circumferential direction of the second guide plate and are arranged along the axial direction of the second guide plate. The second axial limiting protrusion extends outward from the first end wall in the circumferential direction of the second guide plate along the circumferential direction of the second guide plate. The second axial limiting groove is surrounded by a side wall of the second axial limiting protrusion and the first end wall in the circumferential direction of the second guide plate. The first axial limiting protrusion is plugged into and matched with the second axial limiting groove, the second axial limiting protrusion is plugged into and matched with the first axial limiting groove, and the first axial limiting protrusion and the second axial limiting protrusion are axially limited along the first guide plate.

6. The air duct assembly according to claim 5, characterized in that: At a first end in the circumferential direction of the first guide plate, at least one of the first axial limiting protrusions and the first axial limiting grooves is provided at least two, and the first axial limiting protrusions and the first axial limiting grooves are alternately arranged along the axial direction of the first guide plate; The second axial limiting protrusions are arranged in a one-to-one correspondence with the first axial limiting grooves, and the second axial limiting grooves are arranged in a one-to-one correspondence with the first axial limiting protrusions.

7. The air duct assembly according to claim 5, characterized in that: A third axial limiting protrusion and a third axial limiting groove are provided at the second end of the first guide plate in the circumferential direction, and are arranged along the axial direction of the first guide plate. The third axial limiting protrusion extends outward from the second end wall of the first guide plate in the circumferential direction along the circumference of the first guide plate. The third axial limiting groove is surrounded by a side wall of the third axial limiting protrusion and the second end wall of the first guide plate in the circumferential direction. A fourth axial limiting protrusion and a fourth axial limiting groove are provided at a second end in the circumferential direction of the second guide plate, the fourth axial limiting protrusion extending outward from the second end wall in the circumferential direction of the second guide plate along the circumference of the second guide plate, and the fourth axial limiting groove is surrounded by a side wall of the fourth axial limiting protrusion and the second end wall in the circumferential direction of the second guide plate; The third axial limiting protrusion is plugged into and matched with the fourth axial limiting groove, the fourth axial limiting protrusion is plugged into and matched with the third axial limiting groove, and the third axial limiting protrusion and the fourth axial limiting protrusion are axially limited along the first guide plate.

8. The air duct assembly according to claim 7, wherein: The first axial limiting protrusion and the third axial limiting groove are arranged opposite to each other along the radial direction of the first guide plate, and the first axial limiting groove and the third axial limiting protrusion are arranged opposite to each other along the radial direction of the first guide plate; and / or The second axial limiting protrusion and the fourth axial limiting groove are arranged opposite to each other along the radial direction of the second guide plate, and the second axial limiting groove and the fourth axial limiting protrusion are arranged opposite to each other along the radial direction of the second guide plate.

9. The air duct assembly according to claim 5, wherein: A first radial limiting protrusion is further provided at the first end in the circumferential direction of the first guide plate, and the first radial limiting protrusion and the first axial limiting groove are arranged opposite to each other along the radial direction of the first guide plate, and at least a portion of the first radial limiting protrusion extends from the first end wall in the circumferential direction of the first guide plate toward the first axial limiting groove along the circumference of the first guide plate, and the first radial limiting protrusion and the second axial limiting protrusion cooperate with each other along the radial limitation of the first guide plate; and / or A second radial limiting protrusion is also provided at the first end in the circumferential direction of the second guide plate. The second radial limiting protrusion and the second axial limiting groove are arranged opposite to each other along the radial direction of the second guide plate. At least a portion of the second radial limiting protrusion extends from the first end wall in the circumferential direction of the second guide plate toward the second axial limiting groove along the circumference of the second guide plate. The second radial limiting protrusion cooperates with the first axial limiting protrusion along the radial limitation of the second guide plate.

10. The air duct assembly according to any one of claims 1 to 4, characterized in that: The outer wall of the second guide ring is provided with a driving part, and the guide ring driving part includes a driving body and a driving rod. The driving rod extends along the axial direction of the air duct assembly. The driving body is relatively fixed to the first guide ring. The driving body can drive the driving rod to rotate, and the driving rod is threadedly connected to the driving part.

11. The air duct assembly according to claim 10, characterized in that: There are more than two driving parts, and each driving part is arranged at intervals along the circumference of the second guide ring. The number of the guide ring driving elements is the same as the number of the driving parts, and the guide ring driving elements are arranged in a one-to-one correspondence with the driving parts.

12. The air duct assembly according to any one of claims 1 to 4, characterized in that: The deflector driving member includes a first driving member, a first gear, a second driving member and a second gear; A first rack is further provided on the outer peripheral wall of the first deflector plate. The extension direction of the first rack is parallel to the arrangement direction of the first deflector plate and the second deflector plate. The first gear is drivingly connected to the first rack. The first driving member drives the first gear to rotate, the first gear drives the first rack to move, and the first rack drives the first deflector plate to move along the radial direction of the air duct assembly. A second rack is also provided on the outer peripheral wall of the second guide plate, and the second rack is arranged colinearly with the first rack. The second gear is drivingly connected to the second rack, and the second driving member drives the second gear to rotate, and the second gear drives the second rack to move, and the second rack drives the second guide plate to move radially along the air duct assembly.

13. The air duct assembly according to any one of claims 1 to 4, characterized in that: The connection between the inner circumferential wall of the first guide ring and the inner circumferential wall of the guide plate assembly is smoothly transitioned, and the connection between the inner circumferential wall of the guide plate assembly and the inner circumferential wall of the second guide ring is smoothly transitioned.

14. An air conditioner, characterized in that It comprises a fan blade and an air duct assembly according to any one of claims 1 to 13, wherein the fan blade is located in the air outlet channel.

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