Air duct assembly, fresh air component and air conditioner

Abstract

The air duct assembly comprises an air inlet frame and an opening and closing door, a first air opening frame and a second air opening frame are arranged on the left side and the right side of the air inlet frame respectively, and first shaft holes are formed in an upper frame of the first air opening frame and a lower frame of the second air opening frame respectively. The lower frame of the first tuyere frame and the upper frame of the second tuyere frame are provided with second shaft holes, and the first shaft holes and the second shaft holes are different in aperture. According to the air duct assembly, due to the fact that the opening and closing doors installed in the two air opening frames are the same and are only placed upside down, only one opening and closing door needs to be manufactured, and therefore production cost can be reduced. Moreover, a first rotating shaft and a second rotating shaft with different diameters are respectively arranged at two ends of the opening and closing door, and a first shaft hole and a second shaft hole with different apertures are respectively formed in upper and lower frames of the two tuyere frames, so that the placing direction of the opening and closing door can be determined according to the shaft hole conditions; the opening and closing door can be arranged in the corresponding air opening frame according to the correct placing direction, and the misoperation that the opening and closing door is reversely arranged in the assembling process is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to an air duct assembly, a fresh air component, and an air conditioner. Background Technology

[0002] Some air duct components in related technologies have air inlet frames on both the left and right sides, each with a symmetrical door. Because the two doors are mirror images of each other, they need to be manufactured separately, requiring two sets of molds, resulting in high production costs. Furthermore, the similar shapes of the doors make it easy to assemble the components incorrectly, requiring disassembly and reinstallation, further reducing production efficiency. Moreover, if the incorrect door installation is not detected, it will affect the air intake performance of the fresh air system during in-home use. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a duct assembly that requires only the manufacture of a single opening and closing door, and prevents the door from being installed backwards.

[0004] This utility model also proposes a fresh air component having the above-mentioned air duct assembly.

[0005] This utility model also proposes an air conditioner having the above-mentioned fresh air component.

[0006] According to a first aspect embodiment of the present invention, the fresh air component includes an air inlet frame and a switch door. The air inlet frame has a first air vent frame and a second air vent frame on its left and right sides, respectively. A first shaft hole is formed on the upper frame of the first air vent frame and a second shaft hole is formed on the lower frame of the second air vent frame. The diameters of the first shaft hole and the second shaft hole are different. The switch door is disposed within both the first and second air vent frames. The switch door disposed within the first air vent frame is the same as the switch door disposed within the second air vent frame, but their orientations are reversed. Each end of the switch door has a first rotating shaft and a second rotating shaft. The diameters of the first rotating shaft and the second rotating shaft are different. The diameter of the first rotating shaft matches and is rotatably engaged with the diameter of the first shaft hole, and the diameter of the second rotating shaft matches and is rotatably engaged with the diameter of the second shaft hole.

[0007] According to the air duct assembly of this utility model embodiment, since the switch doors installed in the two air vent frames are identical, only their placement is reversed, only one type of switch door needs to be manufactured, thereby reducing production costs. Furthermore, by setting a first and a second rotating shaft of different diameters at both ends of the switch door, and by opening a first and a second shaft hole of different diameters on the upper and lower edges of the two air vent frames, the placement orientation of the switch door can be determined based on the shaft hole configuration. This ensures that the switch door is correctly installed into the corresponding air vent frame, effectively preventing incorrect installation of the switch door during assembly.

[0008] In some embodiments, both the first shaft and the second shaft are configured as lubrication shafts, and the outer peripheral wall of the lubrication shaft is provided with a first oil groove.

[0009] In some embodiments, the first oil groove extends axially along the lubrication shaft and is a plurality of grooves spaced circumferentially along the lubrication shaft.

[0010] In some embodiments, the two ends of the switch door have a first support base and a second support base respectively. The first rotating shaft protrudes from the first support base, and the second rotating shaft protrudes from the second support base. The switch door disposed in the first air vent frame is rotatably supported on the lower edge of the first air vent frame by the second support base at the lower end, and the switch door disposed in the second air vent frame is rotatably supported on the lower edge of the second air vent frame by the first support base at the lower end.

[0011] In some embodiments, both the first support and the second support are configured as lubrication seats, wherein a second oil groove is formed within the lubrication seat and opens toward the respective side shaft.

[0012] In some embodiments, the first shaft hole at the upper end of the first air vent frame and the second shaft hole at the upper end of the second air vent frame are both radially open holes, and the second shaft hole at the lower end of the first air vent frame and the first shaft hole at the lower end of the second air vent frame are both circumferentially closed holes. The lower end of the switch door is inserted downward into the circumferentially closed hole, and the upper end of the switch door is inserted radially into the radially open hole.

[0013] In some embodiments, the upper end of the first air vent frame has a first guide groove extending in a left-right direction, one end of the first guide groove extending to the open portion of the first shaft hole to communicate with the first shaft hole, and the other end of the first guide groove being open to form an inlet for introducing the first rotating shaft; the upper end of the second air vent frame has a second guide groove extending in a left-right direction, one end of the second guide groove extending to the open portion of the second shaft hole to communicate with the second shaft hole, and the other end of the second guide groove being open to form an inlet for introducing the second rotating shaft; the diameter of the first shaft hole is larger than the diameter of the second shaft hole, and the width of the first guide groove is larger than the width of the second guide groove.

[0014] In some embodiments, the two ends of the opening of the radially open hole have locking portions, and the distance between the two locking portions is smaller than the diameter of the radially open hole. The locking portions are used to prevent the upper rotating shaft of the switch door from moving out of the radially open hole.

[0015] In some embodiments, both the first rotating shaft and the second rotating shaft are provided with transmission holes. The fresh air component further includes a drive motor. The drive motor is provided above the first air vent frame and above the second air vent frame. The drive motor extends downward with a drive shaft. The drive shaft of the drive motor above the first air vent frame is inserted into the transmission hole of the first rotating shaft through the first shaft hole. The drive shaft of the drive motor above the second air vent frame is inserted into the transmission hole of the second rotating shaft through the second shaft hole.

[0016] In some embodiments, the transmission holes on the first rotating shaft and the transmission holes on the second rotating shaft have the same specifications.

[0017] In some embodiments, the air inlet frame is provided with a protective structure on the inlet shaft side of the radially open hole to prevent contact with the drive shaft.

[0018] In some embodiments, the switch door includes a door panel body, the first rotating shaft and the second rotating shaft are coaxially disposed at both ends of the length of the door panel body, the rotation axis of the switch door is offset to one side in the thickness direction of the door panel body, and the door panel body protrudes in a direction away from the rotation axis.

[0019] In some embodiments, the door panel body includes a first panel portion and a second panel portion with different widths arranged sequentially along the width direction of the door panel body, and the door panel body is bent at the connection between the first panel portion and the second panel portion to make the first panel portion and the second panel portion stepped.

[0020] A fresh air component according to a second aspect of the present invention includes: a fresh air module, the fresh air module including a fresh air fan and a duct assembly according to any embodiment of the first aspect of the present invention, the air inlet frame being disposed at the rear side of the fresh air fan and communicating with the inlet of the fresh air fan, the rear part of the air inlet frame having a fresh air inlet, and the fresh air inlet having a valve; a purification module, the purification module being disposed above the fresh air module and defining a purification duct communicating with the outlet of the fresh air fan, the purification module including a purification unit at least partially disposed within the purification duct; and an air outlet module, the air outlet module being disposed above the purification module and defining an air outlet duct communicating with the purification duct, the air outlet module having an air outlet communicating with the air outlet duct.

[0021] According to the present invention, by setting the air duct assembly of the first aspect, the overall assembly efficiency of the fresh air component is improved and the production cost of the fresh air component is reduced.

[0022] An air conditioner according to a third aspect of the present invention includes a duct assembly according to any embodiment of the first aspect of the present invention or a fresh air component according to an embodiment of the second aspect of the present invention.

[0023] According to the present invention, by setting the above-mentioned air duct assembly or fresh air component, the overall assembly efficiency of the air conditioner is improved and the production cost of the air conditioner is reduced.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] Figure 1 This is an assembly drawing of a duct assembly according to an embodiment of the present invention;

[0026] Figure 2 yes Figure 1 A schematic diagram of the air inlet frame shown;

[0027] Figure 3 yes Figure 2 An exploded view of the air duct assembly shown;

[0028] Figure 4 yes Figure 3 Enlarged view of point A shown in the image;

[0029] Figure 5 yes Figure 3 Enlarged view of point B shown;

[0030] Figure 6 yes Figure 3 A schematic diagram of the opening and closing of the door is shown;

[0031] Figure 7 yes Figure 1 A schematic diagram of the air duct assembly shown;

[0032] Figure 8 yes Figure 7 Enlarged view of point C shown;

[0033] Figure 9 yes Figure 7 Enlarged view of point D shown;

[0034] Figure 10 yes Figure 6 A schematic diagram showing one angle of the door opening and closing;

[0035] Figure 11 yes Figure 6 A schematic diagram showing another angle of the opening and closing door;

[0036] Figure 12 yes Figure 1 A schematic diagram of the air inlet frame shown;

[0037] Figure 13 yes Figure 12 Enlarged view of point E shown;

[0038] Figure 14 yes Figure 1 A schematic diagram of the air duct assembly shown;

[0039] Figure 15 yes Figure 14 Enlarged view of point F shown;

[0040] Figure 16 yes Figure 14 Enlarged view of point G shown;

[0041] Figure 17 yes Figure 1 A schematic diagram of the air duct assembly shown;

[0042] Figure 18 yes Figure 1 A schematic diagram of the air inlet frame shown;

[0043] Figure 19 yes Figure 1 A schematic diagram of the assembly step one of the air duct components shown;

[0044] Figure 20 yes Figure 1 The diagram shows the second assembly step of the air duct assembly.

[0045] Figure 21 yes Figure 1 The diagram shows the second assembly step of the air duct assembly.

[0046] Figure 22 yes Figure 1 The diagram shows the assembly step three of the air duct assembly shown.

[0047] Figure 23 yes Figure 1 The diagram shows step four of the assembly process for the air duct assembly.

[0048] Figure 24 yes Figure 1 The diagram shows step five of the assembly process for the air duct assembly.

[0049] Figure 25 yes Figure 1 The frontal projection view of the opening and closing door shown;

[0050] Figure 26 yes Figure 25 The left view of the door being opened and closed is shown;

[0051] Figure 27 yes Figure 25 The right view of the door shown in the diagram;

[0052] Figure 28 This is a cross-sectional view of a fresh air component according to an embodiment of the present invention;

[0053] Figure 29 yes Figure 28 Another diagram showing the operating state of the fresh air component;

[0054] Figure 30 This is a schematic diagram of a fresh air component according to an embodiment of the present invention from one angle;

[0055] Figure 31 yes Figure 30 A schematic diagram of the fresh air component shown from another angle;

[0056] Figure 32 This is a schematic diagram of an air conditioner according to an embodiment of the present invention.

[0057] Figure label:

[0058] Air conditioner 1000;

[0059] Ventilation and heat exchange components 100;

[0060] Fresh air components 200;

[0061] Fresh air module 1;

[0062] Air duct assembly 1A; Fresh air fan 1B;

[0063] Air inlet frame 11;

[0064] First shaft hole 1115; Second shaft hole 1116;

[0065] Radial open hole 1117; locking part 11171; protective structure 11172; peripheral closed hole 1118;

[0066] First air vent frame 111a;

[0067] The upper frame of the first air vent frame is 111a1; the lower frame of the first air vent frame is 111a2; the first guide groove is 111a3;

[0068] Second air vent frame 111b;

[0069] The upper frame of the second air vent frame is 111b1; the lower frame of the second air vent frame is 111b2; the second guide groove is 111b3;

[0070] Fresh air inlet 112; Valve 113;

[0071] Opening and closing door 13;

[0072] Door panel body 131; rotation axis L; first plate 131a; second plate 131b;

[0073] Lubrication shaft 132; First rotating shaft 132a; Second rotating shaft 132b; First oil groove 1321; Transmission hole 1322;

[0074] Lubrication seat 133; First support seat 133a; Second support seat 133b; Second oil groove 1331;

[0075] Drive motor 14; drive shaft 141;

[0076] Purification module 2; Purification unit 22;

[0077] Air outlet module 3; air outlet 32. Detailed Implementation

[0078] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein 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 accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0079] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0080] Hereinafter, with reference to the accompanying drawings, a duct assembly 1A according to a first aspect embodiment of the present invention will be described.

[0081] See Figures 1-3 The air duct assembly 1A includes: an air inlet frame 11 and a door 13. A first air vent frame 111a and a second air vent frame 111b are respectively provided on the left and right sides of the air inlet frame 11. A first axial hole 1115 is provided on the upper frame 111a1 of the first air vent frame 111a and the lower frame 111b2 of the second air vent frame 111b. A second axial hole 1116 is provided on the lower frame 111a2 of the first air vent frame 111a and the upper frame 111b1 of the second air vent frame 111b. The diameters of the first axial hole 1115 and the second axial hole 1116 are different. The first air vent... A switch door 13 is provided in both frame 111a and the second air vent frame 111b. The switch door 13 in the first air vent frame 111a is the same as the switch door 13 in the second air vent frame 111b, but the orientation is reversed. The two ends of the switch door 13 have a first rotating shaft 132a and a second rotating shaft 132b, respectively. The diameters of the first rotating shaft 132a and the second rotating shaft 132b are different. The diameter of the first rotating shaft 132a matches and is rotatably engaged with the diameter of the first shaft hole 1115, and the diameter of the second rotating shaft 132b matches and is rotatably engaged with the diameter of the second shaft hole 1116.

[0082] It is understandable that "the diameter of the first rotating shaft 132a matches and is rotatably fitted with the diameter of the first shaft hole 1115" means that the diameter of the first rotating shaft 132a is close to that of the first shaft hole 1115, the first rotating shaft 132a is inserted into the first shaft hole 1115, and can rotate relative to the first shaft hole 1115; "the diameter of the second rotating shaft 132b matches and is rotatably fitted with the diameter of the second shaft hole 1116" means that the diameter of the second rotating shaft 132b is close to that of the second shaft hole 1116, the second rotating shaft 132b is inserted into the second shaft hole 1116, and can rotate relative to the second shaft hole 1116.

[0083] In the above technical solution, the switch door 13 installed in the first air vent frame 111a is the same as the switch door 13 installed in the second air vent frame 111b, that is, the same switch door 13 is installed in the first air vent frame 111a and the second air vent frame 111b respectively. However, the orientation of the two switch doors 13 is reversed, that is, the first pivot 132a of one switch door 13 faces upward and the second pivot 132b faces downward, while the first pivot 132a of the other switch door 13 faces downward and the second pivot 132b faces upward.

[0084] Since the upper frame 111a1 of the first air vent frame 111a has a first shaft hole 1115 and the lower frame 111a2 of the first air vent frame 111a has a second shaft hole 1116, the first rotating shaft 132a of the switch door 13 installed in the first air vent frame 111a faces upward and rotates in cooperation with the first shaft hole 1115 of the upper frame 111a1 of the first air vent frame 111a, and the second rotating shaft 132b of the switch door 13 installed in the first air vent frame 111a faces downward and rotates in cooperation with the second shaft hole 1116 of the lower frame 111a2 of the first air vent frame 111a. Meanwhile, since the upper frame 111b1 of the second air vent frame 111b has a second shaft hole 1116 and the lower frame 111b2 of the second air vent frame 111b has a first shaft hole 1115, the first rotating shaft 132a of the switch door 13 installed in the second air vent frame 111b faces downward and rotates in cooperation with the first shaft hole 1115 of the lower frame 111b2 of the second air vent frame 111b, and the second rotating shaft 132b of the switch door 13 installed in the second air vent frame 111b faces upward and rotates in cooperation with the second shaft hole 1116 of the upper frame 111b1 of the second air vent frame 111b.

[0085] In this way, the first pivot 132a of the switch door 13 installed in the first air vent frame 111a faces upward and the second pivot 132b faces downward, while the first pivot 132a of the switch door 13 installed in the second air vent frame 111b faces downward and the second pivot 132b faces upward. Although the switch doors 13 on both sides have the same structure, their orientation is reversed, thus forming a symmetrical arrangement that meets the requirement of mirrored setup of the switch doors 13 on the left and right sides (e.g., combined with...). Figure 28 As shown in the figure, only one type of switch door 13 needs to be produced, which effectively reduces production costs.

[0086] Furthermore, by setting the diameters of the first rotating shaft 132a and the second rotating shaft 132b at both ends of the switch door 13 to be different, and the shaft hole diameters of the upper and lower sides of the two air vent frames to be different, the correct placement of the switch door 13 at the corresponding air vent frame can be easily determined according to the principle of matching a large-diameter shaft hole with a large-diameter rotating shaft and a small-diameter shaft hole with a small-diameter rotating shaft. This reduces the probability of the switch door 13 being installed backwards, eliminates the need to disassemble and reinstall the switch door 13, and improves production efficiency. It also avoids the problem of the switch door 13 being installed backwards affecting the air intake effect, thus improving the operational reliability of the duct assembly 1A.

[0087] According to the air duct assembly 1A of this utility model embodiment, since the switch doors 13 installed in the two air vent frames (i.e., the first air vent frame 111a and the second air vent frame 111b) are identical, except that the orientation of the switch doors 13 in the two air vent frames is reversed, only one type of switch door 13 needs to be manufactured, thereby reducing production costs. Furthermore, by setting a first rotating shaft 132a and a second rotating shaft 132b with different diameters at both ends of the switch door 13, and by opening a first shaft hole 1115 and a second shaft hole 1116 with different diameters on the upper and lower edges of the two air vent frames (i.e., the first air vent frame 111a and the second air vent frame 111b), the orientation of the switch door 13 can be determined according to the shaft hole configuration, ensuring that the switch door 13 is correctly installed into the corresponding air vent frame, effectively avoiding the misoperation of installing the switch door 13 backwards during assembly.

[0088] For example, the first air vent frame 111a and the second air vent frame 111b are disposed on the left and right sides of the air inlet frame 11, respectively defining air inlets communicating with the interior. The switch door 13 is used to control the opening and closing state of the air inlets defined by the corresponding air vent frame. In the embodiment of this utility model, the switch door 13 and the air vent frame are rotatably connected. The switch door 13 can open and close the corresponding air inlet by rotating, thereby reducing the difficulty of opening and closing the switch door 13 and improving the reliability and convenience of opening and closing the corresponding air inlet.

[0089] For example, the shape and size of the air vent frame are not limited to the rectangle shown in the figure, but can also be round, square, etc. The shape and size of the air vent frame can be adjusted according to the overall design and usage requirements of the air duct assembly 1A to adapt to different installation environments and airflow requirements; the material of the switch door 13 can be plastic, metal or composite material, etc., depending on the usage environment and requirements, to meet different strength and durability requirements.

[0090] In some embodiments, see Figure 4 and Figure 5Both the first rotating shaft 132a and the second rotating shaft 132b are constructed as lubrication shafts 132, and the outer peripheral wall of the lubrication shaft 132 is provided with a first oil groove 1321.

[0091] In the above technical solution, the first oil groove 1321 can reduce the contact area between the outer peripheral wall of the lubricating shaft 132 and the shaft hole, thereby reducing friction and wear and extending service life. In addition, the first oil groove 1321 can be used to store lubricating medium. When the first oil groove 1321 stores lubricating medium, the shaft can be lubricated during rotation, thereby reducing friction and wear during rotation and extending service life. At the same time, the design of the lubricating shaft 132 and the first oil groove 1321 also reduces the possibility of jamming and abnormal noise of the lubricating shaft 132 during rotation.

[0092] The number and shape of the first oil groove 1321 are not limited. For example, there may be one or more. For example, the first oil groove 1321 may be a strip groove or a dot groove formed on the outer peripheral wall of the lubrication shaft 132.

[0093] For example, see Figure 4 and Figure 5 The first oil groove 1321 extends along the axial direction of the lubrication shaft 132 and is a plurality of grooves spaced apart circumferentially along the lubrication shaft 132. That is, the first oil groove 1321 is a strip-shaped groove extending along the axial direction of the lubrication shaft 132, and there are a plurality of strip-shaped grooves spaced apart circumferentially along the lubrication shaft 132.

[0094] In this way, when the lubrication shaft 132 rotates, the lubricating oil can be more effectively dispersed, increasing the lubrication range, reducing friction and wear between the lubrication shaft 132 and the shaft hole, extending service life, and reducing noise and abnormal sounds.

[0095] The cross-sectional shape of the first oil groove 1321 is not limited, for example, it can be rectangular, circular or other shapes, and its depth and width need to be designed according to the lubrication requirements and the size of the lubrication shaft 132.

[0096] In some embodiments, see Figures 6-9 The two ends of the switch door 13 have a first support seat 133a and a second support seat 133b, respectively. The first rotating shaft 132a protrudes from the first support seat 133a, and the second rotating shaft 132b protrudes from the second support seat 133b. The switch door 13, which is set in the first air vent frame 111a, is rotatably supported on the lower frame 111a2 of the first air vent frame 111a through the lower second support seat 133b. The switch door 13, which is set in the second air vent frame 111b, is rotatably supported on the lower frame 111b2 of the second air vent frame 111b through the lower first support seat 133a.

[0097] In the above technical solution, the door 13 is rotatably supported on the lower edge of the air vent frame by the support base at the lower end, which makes the rotation smoother and the force more even, reducing the risk of damage caused by shaking or uneven force during the rotation process.

[0098] In embodiments of this utility model, the shape of the support base is not limited; for example, it can be combined with... Figure 10 and Figure 11 It can be circular or ring-shaped to better adapt to different installation environments and stress conditions; the connection method between the support base and the rotating shaft protruding from the support base is not limited to a one-piece connection. For example, the rotating shaft can also be fixed to the support base by bonding, welding, bolts, pins or other fasteners.

[0099] In an embodiment of this utility model, the door 13 is rotatably supported on the lower frame 1112 of the air vent frame by the support base at the lower end. The way the support base contacts the lower frame 1112 of the air vent frame is not limited. For example, it can be surface contact, line contact, or multi-point contact.

[0100] For example, such as Figures 8-11 As shown, the support base is circular, and the rotating shaft and the support base are integrally formed and connected. The rotating shaft protrudes from the support base, and the support base surrounds the rotating shaft circumferentially and forms an annular boss in the circumferential direction of the rotating shaft. The end face of the boss abuts against the lower frame of the air vent frame to support the rotation of the opening and closing door 13. Since the support base is circular and contacts the lower frame of the air vent frame, the contact area is increased, making the support base more evenly stressed. This effectively reduces the risk of structural deformation or damage caused by uneven stress, thereby enhancing the structural stability of the entire air duct assembly 1A. The integral connection between the rotating shaft and the support base not only simplifies the manufacturing process but also improves the connection strength between the rotating shaft and the support base, making the opening and closing door 13 smoother and more stable during rotation, reducing the problem of poor rotation caused by loose connections or wear.

[0101] In some embodiments, see Figures 10-11 Both the first support 133a and the second support 133b are configured as lubrication seats 133, and a second oil groove 1331 is formed within the lubrication seat 133, opening towards the corresponding side shaft. Since the first shaft 132a protrudes from the first support 133a, a second oil groove 1331 opening towards the first shaft 132a is formed within the first support 133a. Similarly, since the second shaft 132b protrudes from the second support 133b, a second oil groove 1331 opening towards the second shaft 132b is formed within the second support 133b. The second oil groove 1331 can be used to store and supply lubricating medium.

[0102] In embodiments of this invention, by constructing both the first support 133a and the second support 133b as lubrication seats 133, and forming a second oil groove 1331 open towards the corresponding side of the rotating shaft, lubricating medium can be added to the second oil groove 1331. The lubricating medium in the second oil groove 1331 can be supplied towards the rotating shaft, thereby ensuring good lubrication of the rotating shaft during rotation, reducing frictional resistance, and improving rotational smoothness. Furthermore, when the rotating shaft has a first oil groove 1321, the lubricating medium in the second oil groove 1331 can be supplied to the first oil groove 1321, making it easier to add or replace the lubricating medium and simplifying maintenance.

[0103] In embodiments of this utility model, the number of second oil tanks 1331 is not limited; there may be one or more. For example, see [link to relevant documentation]. Figures 10-11 The second oil groove 1331 is provided in multiple circumferentially spaced along the lubrication shaft 132, so that the lubricating oil can be supplied to each part of the shaft more effectively, thereby improving the lubrication effect. In addition, the cross-sectional shape of the second oil groove 1331 is not limited, for example, it can be rectangular, circular or other shapes, and its depth and width need to be designed according to the lubrication requirements and the size of the support.

[0104] In some embodiments, see Figure 3 and combined Figures 12-16 The first shaft hole 1115 at the upper end of the first air vent frame 111a and the second shaft hole 1116 at the upper end of the second air vent frame 111b are both radially open holes 1117. The second shaft hole 1116 at the lower end of the first air vent frame 111a and the first shaft hole 1115 at the lower end of the second air vent frame 111b are both circumferentially closed holes 1118. The lower end of the rotating shaft of the switch door 13 is inserted downward into the circumferentially closed hole 1118, and the upper end of the rotating shaft of the switch door 13 is inserted radially into the radially open hole 1117.

[0105] That is, the first rotating shaft 132a at the upper end of the switch door 13 installed in the first air vent frame 111a is inserted radially into the radially open hole 1117 at the upper end of the first air vent frame 111a, and the second rotating shaft 132b at the lower end is inserted downward into the circumferential closed hole 1118 at the lower end of the first air vent frame 111a. The second rotating shaft 132b at the upper end of the switch door 13 installed in the second air vent frame 111b is inserted radially into the radially open hole 1117 at the upper end of the second air vent frame 111b, and the first rotating shaft 132a at the lower end is inserted downward into the circumferential closed hole 1118 at the lower end of the second air vent frame 111b.

[0106] This invention designs the first shaft hole 1115 at the upper end of the first air vent frame 111a and the second shaft hole 1116 at the upper end of the second air vent frame 111b as radially open holes 1117. This allows the lower end of the rotating shaft of the switch door 13 to be easily inserted radially into the radially open hole 1117 after the shaft is inserted downward into the circumferentially closed hole 1118, without the need for complex alignment and fixing steps, thus improving assembly efficiency. The design of the second shaft hole 1116 at the lower end of the first air vent frame 111a and the first shaft hole 1115 at the lower end of the second air vent frame 111b as circumferentially closed holes 1118 ensures the stable installation of the lower end of the rotating shaft of the switch door 13, allowing the switch door 13 to rotate stably, thereby improving the stability and reliability of the entire structure.

[0107] The radially open hole 1117 refers to a hole with an open opening on its radially upward side, allowing the shaft to enter and exit the radially open hole 1117 from the open opening. The width of the open opening of the radially open hole 1117 can be slightly smaller than the diameter of the corresponding mating shaft, so that after the shaft enters the radially open hole 1117, it will not spontaneously exit the radially open hole 1117 without the application of external force. The circumferentially closed hole 1118 refers to a hole that is closed around its entire circumference, without any radial open opening, and the shaft can only be inserted into the circumferentially closed hole 1118 along its axial direction.

[0108] To simplify the installation process and improve installation accuracy, a guide structure, such as a guide groove or guide block, can be designed at the opening of the radial open hole 1117 to guide the upper rotating shaft of the switch door 13 to be smoothly inserted.

[0109] For example, see Figure 3 , Figure 17 and Figure 18 The upper end of the first air vent frame 111a has a first guide groove 111a3 extending in the left-right direction. One end of the first guide groove 111a3 (e.g., the left end shown in the figure) extends to the opening of the first shaft hole 1115 to communicate with the first shaft hole 1115. The other end of the first guide groove 111a3 (e.g., the right end shown in the figure) is open to form an inlet for introducing the first rotating shaft 132a. The upper end of the second air vent frame 111b has a second guide groove 111b3 extending in the left-right direction. One end of the second guide groove 111b3 (e.g., the right end shown in the figure) extends to the opening of the second shaft hole 1116 to communicate with the second shaft hole 1116. The other end of the second guide groove 111b3 (e.g., the left end shown in the figure) is open to form an inlet for introducing the second rotating shaft 132b. The groove width w1 of the first guide groove 111a3 is different from the groove width w2 of the second guide groove 111b3.

[0110] For example, when the diameter of the first shaft hole 1115 is larger than the diameter of the second shaft hole 1116, the width w1 of the first guide groove 111a3 connected to the first shaft hole 1115 is greater than the width w2 of the second guide groove 111b3 connected to the second shaft hole 1116. In this way, the first rotating shaft 132a with a larger diameter can enter the first shaft hole 1115 with a larger diameter along the first guide groove 111a3 with a larger width, and the second rotating shaft 132b with a smaller diameter can enter the second shaft hole 1116 with a smaller diameter along the second guide groove 111b3 with a smaller width.

[0111] Therefore, by setting the first guide groove 111a3 and the second guide groove 111b3, the first rotating shaft 132a and the second rotating shaft 132b can be smoothly guided into the first shaft hole 1115 and the second shaft hole 1116 along the guide groove. This design not only simplifies the installation process, but also, by setting the groove width w1 of the first guide groove 111a3 to be different from the groove width w2 of the second guide groove 111b3, the guide groove with the larger groove width is connected to the shaft hole with the larger diameter, and the guide groove with the smaller groove width is connected to the shaft hole with the smaller diameter. Thus, by observing the groove width, the appropriate rotating shaft can be selected, further reducing the probability of reverse installation and improving the accuracy of installation.

[0112] In this embodiment of the invention, the guide groove extends in the left-right direction, and its width in the front-back direction is the groove width. This groove width can be larger than the diameter of the corresponding rotating shaft, allowing the rotating shaft to smoothly enter the shaft hole through the guide groove. It is understood that the groove width can be uniform in the left-right direction from the shaft hole to the inlet, or it can gradually widen in the left-right direction from the shaft hole to the inlet. This larger inlet size makes it easier for the rotating shaft to align with the guide groove during installation and disassembly, further improving assembly efficiency and reducing operational difficulty.

[0113] See Figure 12 and Figure 13 In some embodiments, the two ends of the opening of the radial open hole 1117 have locking portions 11171 respectively, and the distance w3 between the two locking portions 11171 is less than the diameter D of the radial open hole 1117. The locking portions 11171 are used to prevent the upper end of the door 13 from moving out of the radial open hole 1117.

[0114] The design of the locking portions 11171 at both ends of the radial open hole 1117 ensures the stability of the upper rotating shaft of the switch door 13 within the radial open hole 1117, effectively preventing the rotating shaft from falling off or misaligning due to vibration or external force, thereby improving the reliability and stability of the entire switch door 13 system. In addition, the design of the locking portions 11171 simplifies the limiting design of the switch door 13, eliminating the need for additional and complex limiting devices to limit the rotating shaft. At the same time, it is also convenient to check the fit between the rotating shaft and the radial open hole 1117 during maintenance, reducing maintenance costs.

[0115] For example, the locking portion 11171 can be located at both ends of the open portion of the radially open hole 1117 to limit the range of motion of the rotating shaft and prevent the rotating shaft from coming out of the hole; wherein, the locking portion 11171 can take various forms, such as the outwardly protruding edges at both ends of the radially open hole 1117, specially designed slots, or other structures that can effectively limit the movement. Figure 13 As shown, the locking part 11171 exists in the form of protruding edges at both ends of the radially open hole 1117. This design not only meets the limiting requirements, but also eliminates the need to set other complex locking structures, making the overall structure of the radially open hole 1117 simpler and more compact.

[0116] In some embodiments, see Figures 3-5 The first rotating shaft 132a and the second rotating shaft 132b are both provided with transmission holes 1322. The air duct assembly 1A also includes a drive motor 14. A drive motor 14 is provided above the first air outlet frame 111a and the second air outlet frame 111b, respectively. Figure 14 and Figure 15 The drive motor 14 extends downward to form a drive shaft 141. The drive shaft 141 of the drive motor 14 above the first air vent frame 111a is inserted into the transmission hole 1322 of the first rotating shaft 132a through the first shaft hole 1115. The drive shaft 141 of the drive motor 14 above the second air vent frame 111b is inserted into the transmission hole 1322 of the second rotating shaft 132b through the second shaft hole 1116.

[0117] Therefore, by connecting the drive motor 14 above the air vent frame to the upper shaft of the switch door 13, the upper shaft of the switch door 13 can be limited, preventing it from dislodging from the radially open hole 1117 and improving the rotational stability of the switch door 13. Furthermore, by opening transmission holes 1322 on the first shaft 132a and the second shaft 132b, the drive shaft 141 of the drive motor 14 is directly inserted into the transmission hole 1322, achieving a direct connection between the drive motor 14 and the upper shaft of the switch door 13. This reduces intermediate transmission links, improves transmission efficiency, and makes the overall structure more compact and highly integrated. Positioning the drive motor 14 above the air vent frame facilitates daily maintenance and replacement. If the drive motor 14 malfunctions, it can be easily replaced or repaired without disassembling the entire air duct assembly 1A. Moreover, the location of the drive motor 14 prevents it from coming into contact with water accumulation at the bottom and does not obstruct ventilation.

[0118] In embodiments of this utility model, the cross-sectional shape and dimensions of the transmission hole 1322 can be designed according to actual conditions. For example, such as... Figures 4-6 As shown, the cross-sectional shape of the transmission hole 1322 is rectangular, and the cross-sectional shape of the drive shaft 141 is also rectangular, to ensure that the two can be tightly inserted and matched to achieve effective power transmission. Of course, the shape of the drive shaft 141 and the transmission hole 1322 is not limited to the rectangle shown in the figure. They can also be other polygons, such as triangles, hexagons, etc. As long as they are not circular, torque can be transmitted.

[0119] In this embodiment of the utility model, the drive motor 14 is disposed above the air vent frame, and the specific installation method is not limited. For example, it can be installed by suspension, fixed bracket, etc. For example, Figure 1 and Figure 3 As shown, the drive motor 14 has mounting ears on its side for mounting and fixing, and there are screw posts on the top of the air vent frame for fixing. The drive motor 14 is fixed to the screw posts on the top of the air vent frame by screws passing through the mounting ears.

[0120] In some embodiments, such as Figures 3-4 As shown, the transmission hole 1322 on the first rotating shaft 132a and the transmission hole 1322 on the second rotating shaft 132b have the same specifications. The same specifications for the transmission holes 1322 mean that the transmission holes 1322 on the first rotating shaft 132a and the second rotating shaft 132b are identical in shape and size, and can be used with the same drive shaft 141.

[0121] Therefore, the consistency of the transmission hole 1322 specification enables the standardization of the first rotating shaft 132a and the second rotating shaft 132b during manufacturing and assembly. This allows the use of only the same drive motor 14, reducing manufacturing costs and avoiding the problem of reverse installation due to different motor specifications.

[0122] In some embodiments, see Figures 12-15 The air inlet frame 11 is provided with a protective structure 11172 on the shaft side of the radially open hole 1117 to prevent contact with the drive shaft 141.

[0123] This invention effectively prevents users or maintenance personnel from directly touching the drive shaft 141 during operation by setting a protective structure 11172 on the shaft inlet side of the radially open hole 1117, thus avoiding the risk of injury caused by accidental contact and improving the overall safety of the product. On the other hand, the protective structure 11172 can prevent dust, debris, etc. from entering and damaging the drive shaft 141 to a certain extent, so that the drive shaft 141 can operate normally without being affected, improving the operational stability of the equipment and extending the service life and reliability of the equipment.

[0124] In an embodiment of this utility model, the protective structure 11172 is disposed on the shaft side of the radially open hole 1117 of the air inlet frame 11 to prevent the user from touching the drive shaft 141 inside the radially open hole 1117; the protective structure 11172 can be in various forms, such as protrusions, mesh covers, baffles, ribs and other structures.

[0125] For example, such as Figure 13 As shown, the protective structure 11172 is a raised structure located at both ends of the radially open hole 1117 on the shaft side. The protective structure 11172 is integrally formed with the air inlet frame 11, which has the advantages of being lightweight, corrosion resistant, easy to form, and relatively low cost.

[0126] Alternatively, for example, the protective structure 11172 can be an elastic protective rubber, bonded and fixed inside the guide groove on one side near the radially open hole 1117, located at both ends of the radially open hole 1117 on the shaft side, forming an effective protective barrier. At the same time, the elastic protective rubber also has a certain buffering and shock absorption effect, which can reduce the impact and vibration of external factors on the drive shaft 141.

[0127] Reference Figures 19-24 This describes the assembly process of the air duct assembly 1A according to a specific embodiment of the present invention.

[0128] Step 1, see Figure 19 Insert the lower pivot of the switch door 13 into the lower circumferential sealing hole 1118 of the corresponding side air vent frame. Step Two, see... Figures 20-21 Push the upper pivot of the switch door 13 into the radial open hole 1117 along the upper guide groove of the corresponding side air vent frame. Step 3, see Figure 22 The drive shaft 141 of the drive motor 14 extends vertically downwards and is inserted into the transmission hole of the upper rotating shaft of the switch door 13 through the upper shaft hole of the corresponding side air vent frame. Step 4, see... Figure 23 Use screws (not shown in the figure) to fix the side mounting lugs of the drive motor 14 to the screw posts above the air vent frame. Step 5: See Figure 24 Rotate the other door 13 180 degrees horizontally, and then repeat steps one through four to complete the assembly (presentation). Figure 17 (The state shown).

[0129] In some embodiments, see Figures 25-27 The door 13 includes a door panel body 131. A first rotating shaft 132a and a second rotating shaft 132b are coaxially disposed at both ends of the length of the door panel body 131. The rotation axis L of the door 13 is offset to one side in the thickness direction of the door panel body 131, and the door panel body 131 protrudes in a direction away from the rotation axis L. The coaxiality of the first rotating shaft 132a and the second rotating shaft 132b means that the axes of the two rotating shafts coincide, both being the rotation axis L.

[0130] Therefore, the positions of the first pivot 132a and the second pivot 132b can be separated from the position of the door panel body 131. For example, the first pivot 132a and the second pivot 132b can be set to be closer to the outer side of the air vent frame than the door panel body 131, which satisfies the convenience of installation of the first pivot 132a and the second pivot 132b and facilitates the maintenance and replacement of the door 13. The door panel body 131 is set to be closer to the inner side of the air vent frame than the pivot, close to the air vent position that needs to be opened and closed.

[0131] In some embodiments, see Figures 25-27 The door panel body 131 includes a first plate portion 131a and a second plate portion 131b, which are arranged sequentially along the width direction of the door panel body 131 and have different widths. The door panel body 131 is bent at the connection between the first plate portion 131a and the second plate portion 131b, so that the first plate portion 131a and the second plate portion 131b are stepped. That is, the first plate portion 131a and the second plate portion 131b are not coplanar. This improves the structural strength of the door panel body 131 and alleviates the deformation problem of the door panel body 131.

[0132] For example, the door panel body 131 can be integrally shaped as an arcuate plate protruding in a direction away from the rotation axis L, wherein the first plate portion 131a and the second plate portion 131b are arranged circumferentially along the arc, and the radii of the arc segments corresponding to the first plate portion 131a and the second plate portion 131b are different. Thus, by using an arcuate plate as the door panel body 131, the arcuate design can often disperse stress mechanically, reducing deformation or damage caused by external impact or long-term use, thereby improving the durability and safety of the door 13; on the other hand, the arcuate design has good hydrodynamic characteristics, which helps to reduce wind resistance when the door 13 is in the open state.

[0133] The fresh air component 200 according to a second aspect embodiment of the present invention will now be described.

[0134] See Figures 28-31 The fresh air component 200 includes a fresh air module 1, a purification module 2, and an air outlet module 3. The fresh air module 1 includes a fresh air fan 1B and a duct assembly 1A according to any embodiment of the first aspect of the present invention. An air inlet frame 11 is located on the rear side of the fresh air fan 1B and communicates with the inlet of the fresh air fan 1B. A fresh air inlet 112 is opened at the rear of the air inlet frame 11, and a valve 113 is provided at the fresh air inlet 112. The purification module 2 is located above the fresh air module 1 and defines a purification duct that communicates with the outlet of the fresh air fan 1B. The purification module 2 includes a purification unit 22 that is at least partially located in the purification duct. The air outlet module 3 is located above the purification module 2 and defines an air outlet duct that communicates with the purification duct. The air outlet module 3 has an air outlet 32 ​​that communicates with the air outlet duct.

[0135] The fresh air component 200 can introduce outdoor air through the fresh air inlet 112 and indoor air through the first air inlet frame 111a and the second air inlet frame 111b. The air introduced into the air inlet frame 11 can be filtered and purified by the purification module 2 to effectively remove pollutants in the air, such as dust, pollen, and bacteria, thereby improving indoor air quality and protecting people's health. The fresh air component 200, which integrates the fresh air fan 1B, the air inlet frame 11, the purification module 2, and the air outlet module 3, has a compact structure, occupies little space, and is easy to install and arrange inside the building.

[0136] By installing a valve 113 at the fresh air inlet 112 and installing opening and closing doors 13 on the first air inlet frame 111a and the second air inlet frame 111b respectively, the operating mode of the fresh air component 200 can be switched. For example, combined with Figure 28 When both doors 13 are opened and valve 113 is closed, indoor air can be purified and circulated. For example, combined with... Figure 29 When both doors 13 are closed, valve 113 is opened, allowing fresh outdoor air to be introduced.

[0137] For example, the fresh air fan 1B is a centrifugal fan, which can provide sufficient power; the type of valve 113 installed at the fresh air inlet 112 is not limited, but it is preferable to have a relatively simple structure, small size, short structural length, small volume, light weight, and easy installation and maintenance. When the valve 113 is a rotary plate valve, the airflow passage area is large and the fluid resistance is small when it is open.

[0138] The air conditioner 1000 according to a third aspect embodiment of the present invention will now be described.

[0139] See Figure 32The air conditioner 1000 includes a duct assembly 1A according to any embodiment of the first aspect of the present invention or a fresh air component 200 according to any embodiment of the second aspect of the present invention. This improves the overall assembly efficiency of the air conditioner 1000, reduces errors during assembly, and lowers the production cost of the air conditioner 1000.

[0140] The air duct assembly 1A may or may not be used in the fresh air component 200. For example, when the air duct assembly 1A is not used in the fresh air component 200, it can be used as a heat exchange air duct in the air conditioner 1000. For example, when the air duct assembly 1A is used in the fresh air component 200, the air conditioner 1000 may also include a ventilation heat exchange component 100. The composition of the ventilation heat exchange component 100 is not limited, and it may include a fan and a heat exchanger.

[0141] The type of air conditioner 1000 according to this utility model embodiment is not limited, and can be a split air conditioner, an integrated air conditioner, etc. After the type of air conditioner 1000 is determined, the relative positions of the ventilation and heat exchange component 100 and the fresh air component 200 can be determined. For example, when the air conditioner 1000 is a cabinet air conditioner, the ventilation and heat exchange component 100 can be located above the fresh air component 200.

[0142] Other components of the air conditioner according to the embodiments of the present invention, such as the display module and the electrical control box, as well as its operation, are known to those skilled in the art and will not be described in detail here.

[0143] Furthermore, the application scenarios of the fresh air component 200 according to the present invention are not limited to the air conditioner 1000, but can also be used in other devices that need to introduce fresh air.

[0144] Hereinafter, with reference to the accompanying drawings, an air conditioner 1000 according to a specific embodiment of the present invention will be described.

[0145] See Figure 32 The air conditioner 1000 includes a ventilation and heat exchange component 100 and a fresh air component 200, combined with Figures 28-31 The fresh air component 200 includes a fresh air module 1, a purification module 2, and an air outlet module 3. The fresh air module 1 includes a fresh air fan 1B and an air inlet frame 11. The air inlet frame 11 is located behind the fresh air fan 1B and is connected to the inlet of the fresh air fan 1B. A fresh air inlet 112 is opened at the rear of the air inlet frame 11, and a valve 113 is provided at the fresh air inlet 112. The purification module 2 is located above the fresh air module 1 and defines a purification air duct connected to the outlet of the fresh air fan 1B. The purification module 2 includes a purification unit 22 at least partially located in the purification air duct. The air outlet module 3 is located above the purification module 2 and defines an air outlet air duct connected to the purification air duct. The air outlet module 3 has an air outlet 32 ​​connected to the air outlet air duct.

[0146] See Figures 1-27 The fresh air module 1 includes a door 13, an air inlet frame 11, and a drive motor 14. The left and right sides of the air inlet frame 11 are respectively provided with a first air vent frame 111a and a second air vent frame 111b. The upper frame 111a1 of the first air vent frame 111a and the lower frame 111b2 of the second air vent frame 111b are each provided with a first shaft hole 1115. The lower frame 111a2 of the first air vent frame 111a and the upper frame 111b1 of the second air vent frame 111b are each provided with a second shaft hole 1116. The diameters of the first shaft hole 1115 and the second shaft hole 1116 are different. A switch door 13 is installed in both the first air vent frame 111a and the second air vent frame 111b. The switch doors 13 in the first air vent frame 111a and the second air vent frame 111b are identical but arranged in opposite directions. Each switch door 13 has a first rotating shaft 132a and a second rotating shaft 132b at its two ends. The diameters of the first rotating shaft 132a and the second rotating shaft 132b are different. The first rotating shaft 132a is matched with the diameter of the first shaft hole 1115 and rotates in fit, while the second rotating shaft 132b is matched with the diameter of the second shaft hole 1116 and rotates in fit. Therefore, the switch doors 13 installed in the first air vent frame 111a and the second air vent frame 111b have the same structure, but the vertical orientation of the switch doors 13 on both sides is opposite.

[0147] Both the first rotating shaft 132a and the second rotating shaft 132b have transmission holes 1322, and the transmission holes 1322 on the first rotating shaft 132a and the second rotating shaft 132b have the same specifications. A drive motor 14 is provided above the first air vent frame 111a and the second air vent frame 111b, respectively. Each drive motor 14 extends downwards with a drive shaft 141. The drive shaft 141 of the drive motor 14 above the first air vent frame 111a is inserted into the transmission hole 1322 of the first rotating shaft 132a through a first shaft hole 1115, and the drive shaft 141 of the drive motor 14 above the second air vent frame 111b is inserted into the transmission hole 1322 of the second rotating shaft 132b through a second shaft hole 1116.

[0148] The two ends of the switch door 13 have a first support seat 133a and a second support seat 133b, respectively. A first rotating shaft 132a protrudes from the first support seat 133a, and a second rotating shaft 132b protrudes from the second support seat 133b. The switch door 13, which is located in the first air vent frame 111a, is rotatably supported on the lower frame 111a2 of the first air vent frame 111a via the lower second support seat 133b. The switch door 13, which is located in the second air vent frame 111b, is rotatably supported on the lower frame 111b2 of the second air vent frame 111b via the lower first support seat 133a. Both the first support seat 133a and the second support seat 133b are constructed as lubrication seats 133, and a second oil groove 1331 is formed in the lubrication seat 133, which opens towards the direction of the corresponding side rotating shaft.

[0149] The first shaft hole 1115 at the upper end of the first air vent frame 111a and the second shaft hole 1116 at the upper end of the second air vent frame 111b are both radially open holes 1117. The second shaft hole 1116 at the lower end of the first air vent frame 111a and the first shaft hole 1115 at the lower end of the second air vent frame 111b are both circumferentially closed holes 1118. The lower end of the rotating shaft of the switch door 13 is inserted downward into the circumferentially closed hole 1118, and the upper end of the rotating shaft of the switch door 13 is inserted radially into the radially open hole 1117.

[0150] The radially open hole 1117 has locking portions 11171 at both ends of its opening. The distance between the two locking portions 11171 is smaller than the diameter of the radially open hole 1117. The locking portions 11171 are used to prevent the upper rotating shaft of the door 13 from moving out of the radially open hole 1117. The air inlet frame 11 is provided with a protective structure 11172 on the shaft inlet side of the radially open hole 1117 to prevent contact with the drive shaft 141.

[0151] The upper end of the first air vent frame 111a has a first guide groove 111a3 extending laterally. One lateral end of the first guide groove 111a3 extends to the opening of the first shaft hole 1115 to communicate with the first shaft hole 1115. The other lateral end of the first guide groove 111a3 is open to form a first inlet for introducing the first rotating shaft 132a. The upper end of the second air vent frame 111b has a second guide groove 111b3 extending laterally. One lateral end of the second guide groove 111b3 extends to the opening of the second shaft hole 1116 to communicate with the second shaft hole 1116. The other lateral end of the second guide groove 111b3 is open to form a second inlet for introducing the second rotating shaft 132b.

[0152] The diameter of the first shaft hole 1115 is larger than the diameter of the second shaft hole 1116. The width w1 of the first guide groove 111a3 connected to the first shaft hole 1115 is larger than the width w2 of the second guide groove 111b3 connected to the second shaft hole 1116. The first rotating shaft 132a with a larger diameter enters the first shaft hole 1115 with a larger diameter along the first guide groove 111a3 with a larger width, and the second rotating shaft 132b with a smaller diameter enters the second shaft hole 1116 with a smaller diameter along the second guide groove 111b3 with a smaller width.

[0153] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0154] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0155] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0156] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0157] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0158] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An air duct assembly, characterized by, The utility model provides an air inlet frame, switch door and the first wind hole frame and the second wind hole frame of air inlet frame, switch door, first wind hole frame and second wind hole frame are arranged in the air inlet frame, and the switch door of first wind hole frame and second wind hole frame is the same but the orientation of the switch door of first wind hole frame and second wind hole frame is upside down. The first rotating shaft and the second rotating shaft are both configured as lubricated shafts, and a first oil groove is arranged on the outer circumferential wall of the lubricated shaft. The first oil groove extends along the axial direction of the lubricated shaft and is a plurality of oil grooves arranged along the circumferential direction of the lubricated shaft.

2. The air duct assembly of claim 1, wherein, The two ends of the switch door are respectively provided with a first support seat and a second support seat, the first rotating shaft protrudes from the first support seat, and the second rotating shaft protrudes from the second support seat.

3. The air duct assembly of claim 2, wherein, The first support seat and the second support seat are both configured as lubricated seats, and a second oil groove is formed in the lubricated seat and opens towards the corresponding side rotating shaft.

4. The air duct assembly of claim 1, wherein, The first shaft hole in the upper end of the first wind hole frame and the second shaft hole in the upper end of the second wind hole frame are both radially open holes, the second shaft hole in the lower end of the first wind hole frame and the first shaft hole in the lower end of the second wind hole frame are both circumferentially closed holes, the lower end rotating shaft of the switch door is inserted into the circumferentially closed hole, and the upper end rotating shaft of the switch door is inserted into the radially open hole.

5. The air duct assembly of claim 4, wherein, The upper end of the first wind hole frame is provided with a first guide groove extending along the left-right direction, one end of the first guide groove extends to the opening of the first shaft hole to communicate with the first shaft hole, and the other end of the first guide groove is open to form an inlet for guiding the first rotating shaft; the upper end of the second wind hole frame is provided with a second guide groove extending along the left-right direction, one end of the second guide groove extends to the opening of the second shaft hole to communicate with the second shaft hole, and the other end of the second guide groove is open to form an inlet for guiding the second rotating shaft; the diameter of the first shaft hole is greater than the diameter of the second shaft hole, and the width of the first guide groove is greater than the width of the second guide groove.

6. The air duct assembly of claim 1, wherein, The opening of the radially open hole is provided with a clamping portion at both ends, the distance between the two clamping portions is less than the diameter of the radially open hole, and the clamping portion is used to prevent the upper end rotating shaft of the switch door from moving out of the radially open hole.

7. The air duct assembly of claim 6, wherein, ​ 8. The air duct assembly of claim 6, wherein, ​ 9. The air duct assembly of claim 6, wherein, The first rotating shaft and the second rotating shaft are both provided with transmission holes, and the air duct assembly further comprises: a driving motor, the upper side of the first air inlet frame and the upper side of the second air inlet frame are respectively provided with the driving motor, the driving motor extends downward to drive shafts, the drive shaft of the driving motor above the first air inlet frame is inserted into the transmission hole of the first rotating shaft through the first shaft hole, and the drive shaft of the driving motor above the second air inlet frame is inserted into the transmission hole of the second rotating shaft through the second shaft hole.

10. The air duct assembly of claim 9, wherein, The transmission hole on the first rotating shaft and the transmission hole on the second rotating shaft are consistent in specification.

11. The air duct assembly of claim 9, wherein, The air inlet frame is provided with a protective structure on the shaft side of the radial open hole to prevent touching the drive shaft.

12. The air duct assembly of claim 1, wherein, The switch door comprises a door plate body, the first rotating shaft and the second rotating shaft are coaxially arranged at both ends of the door plate body, the rotation axis of the switch door is offset to one side in the thickness direction of the door plate body, and the door plate body protrudes away from the rotation axis.

13. The air duct assembly of claim 12, wherein, The door plate body comprises a first plate part and a second plate part which are sequentially arranged in the width direction of the door plate body and different in width, and the door plate body is bent at the connection between the first plate part and the second plate part to make the first plate part and the second plate part arranged in steps.

14. A fresh air component, characterized in that Comprise: Fresh air module, the fresh air module comprises a fresh air fan and the air duct assembly according to any one of claims 1-13, the air inlet frame is arranged at the back side of the fresh air fan and communicates with the inlet of the fresh air fan, the rear part of the air inlet frame is provided with a fresh air inlet, and the fresh air inlet is provided with a valve; Purification module, the purification module is arranged above the fresh air module, and defines a purification air duct communicating with the outlet of the fresh air fan, and the purification module comprises a purification unit arranged at least partially in the purification air duct; Air outlet module, the air outlet module is arranged above the purification module, and defines an air outlet air duct communicating with the purification air duct, and the air outlet module is provided with an air outlet communicating with the air outlet air duct.

15. An air conditioner characterized by comprising: Comprise the air duct assembly according to any one of claims 1-13 or the fresh air component according to claim 14.

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