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, the air inlet frame comprises an air opening frame, an air inlet is defined by the air opening frame, first sealing structures are arranged at the positions, on the edges of the two sides of the width of the air inlet, of the air opening frame respectively, and the opening and closing door is arranged on the air inlet frame. The opening and closing door is arranged at the air opening frame and can rotate around a rotating axis extending in the length direction of the air inlet, second sealing structures are arranged on the edges of the two sides of the width of the opening and closing door respectively, and when the opening and closing door closes the air inlet, the opening and closing door is closed by the opening and closing door. The second sealing structure and the first sealing structure are in concave-convex sealing fit. According to the air duct assembly, when the opening and closing door closes the air inlet, the edges of the two sides of the width of the opening and closing door and the edges of the two sides of the width of the air inlet are in concave-convex sealing fit, and therefore the tightness of closing the air inlet through the opening and closing door can be improved, and the problem that water and dust enter the air inlet frame from the air inlet is solved. In addition, when the air inlet is closed and air enters from other positions on the air inlet frame, the problem that squeal abnormal noise is generated at the closed air inlet can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning technical field especially is related to a wind channel subassembly, new trend part and air conditioner. BACKGROUND

[0002] Some wind channel subassemblies in the related art, certain air inlet is not closed tightly, influences product quality, and there is to be improved. INVENTION CONTENTS

[0003] The utility model discloses at least one of the technical problems in the prior art is solved, for this, the utility model provides a wind channel subassembly, the tightness of the air inlet that the switch door closes can be improved in the wind channel subassembly.

[0004] The utility model further provides a new trend part with the wind channel subassembly.

[0005] The utility model further provides an air conditioner with the new trend part.

[0006] According to the wind channel subassembly of the first aspect embodiment of the utility model, including: air inlet frame and switch door, the air inlet frame includes the air inlet frame, the air inlet frame defines the air inlet, the air inlet frame is equipped with first sealing structure respectively at the width both sides edge of the air inlet, the switch door is located at the air inlet frame, and rotatable setting is formed around the rotation axis that extends along the length direction of the air inlet, the width both sides edge of the switch door is equipped with second sealing structure respectively, when the switch door closes the air inlet, the second sealing structure and the first sealing structure form the concave-convex sealing cooperation.

[0007] According to the wind channel subassembly of the utility model embodiment, when the switch door closes the air inlet, the width both sides edge of the switch door and the width both sides edge of the air inlet form the concave-convex sealing cooperation respectively, so that the tightness of the switch door closing the air inlet can be improved, and the problem of the water and dust of the air inlet frame from the air inlet is improved. In addition, when the air inlet is closed, and the air inlet still has other position air inlet on the air inlet frame, the problem of the howling abnormal sound generated at the closed air inlet can be improved.

[0008] In some embodiments, one of the first sealing structure and the second sealing structure is formed as a convex rib extending along the length direction of the air inlet, and the other is formed as a concave groove extending along the length direction of the air inlet, and the convex rib extends into the concave groove to form the concave-convex sealing cooperation.

[0009] In some embodiments, the rotation axis of the switch door corresponds to the central part of the width of the air inlet, the two side edges of the width of the switch door are respectively a first edge and a second edge, the two side edges of the width of the air inlet are respectively a third edge and a fourth edge, the first edge is adapted to move on the upstream side of the air inlet and form the concave-convex sealing cooperation with the third edge, and the second edge is adapted to move on the downstream side of the air inlet and form the concave-convex sealing cooperation with the fourth edge.

[0010] In some embodiments, the first sealing structure arranged at the third edge is formed as a convex rib protruding towards the upstream side of the air inlet, and the second sealing structure arranged at the fourth edge is formed as a convex rib protruding towards the downstream side of the air inlet; the second sealing structure arranged at the first edge is formed as a groove recessed from the downstream surface of the switch door towards the upstream surface, and the second sealing structure arranged at the second edge is formed as a groove recessed from the upstream surface of the switch door towards the downstream surface, and the convex rib extends into the corresponding groove to form the concave-convex sealing cooperation.

[0011] In some embodiments, the air inlet frame includes a first long side frame and a second long side frame arranged on the two sides of the width of the air inlet, the downstream end of the first long side frame constitutes the third edge, the downstream end of the second long side frame constitutes the fourth edge, the first sealing structure arranged at the third edge extends from the downstream end of the first long side frame towards the upstream side of the air inlet, and forms a clearance distance with the first long side frame, and the first sealing structure arranged at the fourth edge extends from the downstream end of the second long side frame towards the downstream side of the air inlet.

[0012] In some embodiments, the air inlet frame includes a short side frame arranged at each end of the length of the air inlet, and each short side frame is provided with a wind blocking rib protruding towards the direction of the switch door, the wind blocking rib is arranged on the two sides of the rotation axis of the switch door along the width direction of the air inlet, and the wind blocking rib is used to block the gap between the two ends of the length of the switch door and the short side frame.

[0013] In some embodiments, the switch door includes a door plate body, the door plate body includes a first plate part and a second plate part arranged in sequence along the direction from the first edge to the second edge, the second plate part moves on the downstream side of the air inlet, the first plate part moves on the upstream side of the air inlet, the door plate body is bent at the connection of the first plate part and the second plate part to make the first plate part and the second plate part arranged in steps, and the width of the second plate part is greater than the width of the first plate part.

[0014] In some embodiments, the length direction of the air inlet is the up-down direction, and each of the left and right sides of the air inlet frame is provided with one air inlet frame, and the switch doors arranged in the air inlet frames on the left and right sides are the same but are placed upside down.

[0015] In some embodiments, the frame bodies of the air inlet frames on the left and right sides are arranged symmetrically about the central plane of the air inlet frame in the left-right direction.

[0016] In some embodiments, the two air inlet frames are a first air inlet frame and a second air inlet frame, the upper edge of the first air inlet frame and the lower edge of the second air inlet frame are each provided with a first shaft hole, the lower edge of the first air inlet frame and the upper edge of the second air inlet frame are each provided with a second shaft hole, the diameters of the first shaft hole and the second shaft hole are different, the two ends of the switch door are respectively provided with a first rotating shaft and a second rotating shaft, the diameters of the first rotating shaft and the second rotating shaft are different, the first rotating shaft and the first shaft hole are matched in diameter and rotationally fitted, and the second rotating shaft and the second shaft hole are matched in diameter and rotationally fitted.

[0017] In some embodiments, the first shaft hole at the upper end of the first air inlet frame and the second shaft hole at the upper end of the second air inlet frame are both radially open holes, the second shaft hole at the lower end of the first air inlet frame and the first shaft hole at the lower end of the second air inlet frame are both circumferentially closed holes, the lower end rotating shaft of the switch door is inserted into the circumferentially closed hole downward, and the upper end rotating shaft of the switch door is inserted into the radially open hole along the radial direction.

[0018] In some embodiments, the upper end of the first air inlet frame is provided with a first guide groove extending in 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 entrance for guiding the first rotating shaft; the upper end of the second air inlet frame is provided with a second guide groove extending in 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 entrance for guiding 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.

[0019] In some embodiments, the first rotating shaft and the second rotating shaft are both provided with transmission holes, the transmission holes on the first rotating shaft and the transmission holes on the second rotating shaft are of the same specification, the air duct assembly further comprises: a driving motor, the upper side of the first air outlet frame and the upper side of the second air outlet frame are both provided with the driving motor, the driving motor extends downward to form a driving shaft, the driving shaft of the driving motor on the upper side of the first air outlet frame is inserted into the transmission hole of the first rotating shaft through the first shaft hole, and the driving shaft of the driving motor on the upper side of the second air outlet frame is inserted into the transmission hole of the second rotating shaft through the second shaft hole.

[0020] In some embodiments, the fresh air inlet is provided on the air inlet frame, and a valve for opening and closing the fresh air inlet is arranged at the fresh air inlet.

[0021] According to the fresh air component of the second aspect of the present application, the fresh air module comprises a fresh air fan and the air duct assembly according to any one of the first aspect of the present application, the air inlet frame is arranged on the rear 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 a valve is arranged at the fresh air inlet; 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, the purification module comprises a purification unit arranged at least partially in the purification air duct; the air outlet module is arranged above the purification module and defines an air outlet duct communicating with the purification air duct, and the air outlet module is provided with an air outlet communicating with the air outlet duct.

[0022] According to the fresh air component of the present application, the above-mentioned air duct assembly of the first aspect can reduce the howling noise during the operation of the fresh air component.

[0023] According to the air conditioner of the third aspect of the present application, the air duct assembly according to any one of the first aspect of the present application or the fresh air component according to the second aspect of the present application is arranged.

[0024] According to the air conditioner of the present application, the above-mentioned air duct assembly or fresh air component can reduce the howling noise during the operation of the air conditioner.

[0025] Additional aspects and advantages of the present application will be given in part in the following description, part will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is an exploded view of the air duct assembly according to an embodiment of the present application;

[0027] Figure 2 is Figure 1front view of the air inlet frame shown in Fig. 1;

[0028] Figure 3 is along Figure 2 sectional view along line V-V in Fig. 1;

[0029] Figure 4 is Figure 1 diagram of one operating state of the air duct assembly shown in Fig. 1;

[0030] Figure 5 is Figure 4 diagram of another operating state of the air duct assembly shown in Fig. 1;

[0031] Figure 6 is Figure 5 enlarged view of M shown in Fig. 1;

[0032] Figure 7 is Figure 1 diagram of the air inlet frame shown in Fig. 1;

[0033] Figure 8 is Figure 1 diagram of one angle of the switch door shown in Fig. 1;

[0034] Figure 9 is Figure 1 diagram of another angle of the switch door shown in Fig. 1;

[0035] Figure 10 is Figure 1 diagram of a further angle of the switch door shown in Fig. 1;

[0036] Figure 11 is Figure 1 diagram of the air inlet frame shown in Fig. 1;

[0037] Figure 12 is Figure 1 diagram of the air duct assembly shown in Fig. 1;

[0038] Figure 13 is Figure 12 front view of the air duct assembly shown in Fig. 1;

[0039] Figure 14 is Figure 7 enlarged view of E shown in Fig. 1;

[0040] Figure 15 is Figure 13 enlarged view of F shown in Fig. 1;

[0041] Figure 16 is Figure 1 diagram of the air duct assembly shown in Fig. 1;

[0042] Figure 17 is Figure 1A schematic view of the air inlet frame shown in FIG. 1;

[0043] Figure 18 is Figure 1 A close-up view of A shown in FIG. 1;

[0044] Figure 19 is Figure 1 A close-up view of B shown in FIG. 1;

[0045] Figure 20 is Figure 1 A schematic view of assembly step one of the air duct assembly shown in FIG. 1;

[0046] Figure 21 is Figure 1 A schematic view of assembly step two of the air duct assembly shown in FIG. 1;

[0047] Figure 22 is Figure 1 A schematic view of assembly step two of the air duct assembly shown in FIG. 1;

[0048] Figure 23 is Figure 1 A schematic view of assembly step three of the air duct assembly shown in FIG. 1;

[0049] Figure 24 is Figure 1 A schematic view of assembly step four of the air duct assembly shown in FIG. 1;

[0050] Figure 25 is Figure 1 A schematic view of assembly step five of the air duct assembly shown in FIG. 1;

[0051] Figure 26 is a schematic view of a fresh air component according to an embodiment of the present application;

[0052] Figure 27 is Figure 26 A schematic view of the fresh air component from another angle shown in FIG. 1;

[0053] Figure 28 is a schematic view of an air conditioner according to an embodiment of the present application.

[0054] Reference signs:

[0055] Air conditioner 1000;

[0056] Ventilation and heat exchange component 100;

[0057] Fresh air component 200;

[0058] Fresh air module 1;

[0059] Air duct assembly 1A; fresh air fan 1B;

[0060] Air inlet frame 11; central plane S;

[0061] Air inlet frame 111;

[0062] Air inlet 1110; third edge 11101; fourth edge 11102; first sealing structure 11103;

[0063] First long side frame 11111; second long side frame 11112;

[0064] Short side frame 1112; air baffle 1113;

[0065] First shaft hole 1115; second shaft hole 1116;

[0066] Radially open hole 1117; clamping portion 11171; circumferential closed hole 1118;

[0067] First air inlet frame 111a;

[0068] Upper edge frame 111a1 of the first air inlet frame; lower edge frame 111a2 of the first air inlet frame; first guide groove 111a3;

[0069] Second air inlet frame 111b;

[0070] Upper edge frame 111b1 of the second air inlet frame; lower edge frame 111b2 of the second air inlet frame; second guide groove 111b3;

[0071] Fresh air inlet 112; valve 113;

[0072] Switching door 13; rotation axis L; first plate portion 131a; second plate portion 131b;

[0073] Door plate body 131; first edge 1311; second edge 1312; second sealing structure 1313;

[0074] First rotation shaft 132a; second rotation shaft 132b; transmission hole 1322;

[0075] Drive motor 14; drive shaft 141;

[0076] Purification module 2; purification unit 22;

[0077] Air outlet module 3; air outlet 32. DETAILED DESCRIPTION

[0078] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0079] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplifying the present application, the components and arrangements of the specific examples described below are intended to be examples only. Of course, they are not meant to be limiting of the present application. Furthermore, the present application can be practiced in various embodiments other than the specific examples described below. The following description is provided in connection with the illustrative examples. However, the application is not limited to the specific examples described below, but rather, person skilled in the art can recognize that modifications and / or substitutions can be made to the specific examples described below without departing from the scope of the present application. Additionally, the present application provides examples of various specific processes and materials, but one skilled in the art will appreciate the applicability of other processes and / or the use of other materials.

[0080] Next, with reference to the drawings, a wind duct assembly 1A according to a first embodiment of the present application is described.

[0081] Referring to Figure 1 , the wind duct assembly 1A includes an air inlet frame 11 and a switch door 13, which are combined Figure 2 and Figure 3 The air inlet frame 11 includes an air inlet frame 111, which defines an air inlet 1110, and the air inlet frame 111 is provided with a first sealing structure 11103 at the edges of the air inlet 1110 in the width direction. Figures 4-6 The switch door 13 is provided at the air inlet frame 111 and is rotatably arranged about a rotation axis L extending in the length direction of the air inlet 1110 (for example, the up-down direction shown in FIG. 1A), and the switch door 13 is provided with a second sealing structure 1313 at the edges in the width direction, and when the switch door 13 closes the air inlet 1110 (for example, the state shown in FIG. 1B), the second sealing structure 1313 forms a concave-convex sealing cooperation with the first sealing structure 11103. Figure 12 Figure 5

[0082] It can be understood that the width direction of the air inlet 1110 (for example, the first direction F1 shown in FIG. 1A) refers to the direction perpendicular to the length direction of the air inlet 1110 (for example, the second direction F2 shown in FIG. 1A) and perpendicular to the airflow direction of the air inlet 1110. Figure 7 Figure 7

[0083] ​​​​Thus, by setting the widthwise edges of the switch door 13 and the widthwise edges of the air inlet 1110 to form a concave-convex sealing fit, the tightness of the air inlet 1110 can be improved, and the problem of water and dust entering the air inlet 1110 can be solved. Moreover, because the concave-convex sealing fit is formed by the first sealing structure 11103 on the air inlet frame 111 and the second sealing structure 1313 on the switch door 13, the reliability of the sealing fit can be improved. In addition, when the air inlet 1110 is closed, and the air inlet frame 111 has other air inlets (for example, the air inlet 112 shown in the drawings), the problem of whistling noise at the closed air inlet 1110 can be solved. Figure 5

[0084] For example, the air inlet frame 111 has an air inlet 112, and the air inlet 112 has a valve 113 for opening and closing the air inlet 112. The air inlet 1110 can be used to introduce indoor air, and the air inlet 112 can be used to introduce outdoor air. For example, in combination with Figure 4 , when the switch door 13 is opened and the valve 113 is closed, indoor air can be introduced. For example, in combination with Figure 5 , when the switch door 13 is closed and the valve 113 is opened, outdoor air can be introduced. At this time, the concave-convex sealing fit formed by the second sealing structure 1313 and the first sealing structure 11103 can solve the problem of whistling noise at the closed air inlet 1110.

[0085] In some embodiments, in combination with Figure 7 , Figure 8 , and Figure 9 , one of the first sealing structure 11103 and the second sealing structure 1313 is formed as a convex rib extending along the length direction of the air inlet 1110, and the other is formed as a concave groove extending along the length direction of the air inlet 1110. The convex rib extends into the concave groove to form a concave-convex sealing fit.

[0086] For example, the first sealing structure 11103 is formed as a convex rib extending along the length direction of the air inlet 1110, and the second sealing structure 1313 is formed as a concave groove extending along the length direction of the air inlet 1110; or, the second sealing structure 1313 is formed as a convex rib extending along the length direction of the air inlet 1110, and the first sealing structure 11103 is formed as a concave groove extending along the length direction of the air inlet 1110.

[0087] ​In this way, the convex rib and the concave groove are both long strips, and through the cooperation of the two, sealing in the entire length direction of the air inlet 1110 can be achieved, so that the tightness of the closing air inlet 1110 by the switch door 13 can be further improved, and the problem of generating howling noise at the closed air inlet 1110 can be further improved. Moreover, the first sealing structure 11103 and the second sealing structure 1313 are simple in structure and easy to process.

[0088] In some embodiments, in combination with Figure 6 , the rotation axis L of the switch door 13 corresponds to the central part of the width of the air inlet 1110, the two side edges of the width of the switch door 13 are respectively the first edge 1311 and the second edge 1312, and the two side edges of the width of the air inlet 1110 are respectively the third edge 11101 and the fourth edge 11102. The first edge 1311 is adapted to move on the upstream side of the air inlet 1110 and form a concave-convex sealing cooperation with the third edge 11101, and the second edge 1312 is adapted to move on the downstream side of the air inlet 1110 and form a concave-convex sealing cooperation with the fourth edge 11102. Wherein, the "upstream side of the air inlet 1110" refers to one side before the airflow enters the air inlet 1110, and the "downstream side of the air inlet 1110" refers to one side after the airflow enters the air inlet 1110.

[0089] Therefore, by setting the rotation axis L of the switch door 13 to correspond to the central part of the width of the air inlet 1110, a part of the switch door 13 can move on the upstream side of the air inlet 1110, and the remaining part of the switch door 13 can move on the downstream side of the air inlet 1110. In this way, the size of the switch door 13 protruding out of the air inlet 1110 can be reduced, thereby reducing the space occupation and realizing the miniaturization of the structure. Moreover, the switch door 13 arranged in this way can also be protected by the air inlet frame 11, thereby improving the reliability of the overall structure.

[0090] In some embodiments, in combination with Figure 6 and Figure 10 , the switch door 13 comprises a door plate body 131, the door plate body 131 comprises a first plate part 131a and a second plate part 131b arranged in sequence along the direction from the first edge 1311 to the second edge 1312, and the door plate body 131 is bent at the connection between the first plate part 131a and the second plate part 131b to make the first plate part 131a and the second plate part 131b arranged in steps. The width X1 of the second plate part 131b is greater than the width X2 of the first plate part 131a, the second plate part 131b moves on the downstream side of the air inlet 1110, and the first plate part 131a moves on the upstream side of the air inlet 1110. Therefore, the size of the switch door 13 protruding out of the air inlet 1110 can be further reduced, thereby reducing the space occupation.

[0091] In addition, by setting the first plate portion 131a and the second plate portion 131b in a stepped manner, the first plate portion 131a and the second plate portion 131b are arranged in a non-coplanar manner, so that the structural strength of the door plate body 131 can be improved, the deformation problem of the door plate body 131 can be improved, and the sealing performance of the opening and closing door 13 closing the air inlet 1110 can be further improved.

[0092] Exemplarily, the door plate body 131 can be in an arc-shaped plate shape that protrudes towards the direction away from the rotation axis L of the opening and closing door 13, wherein the first plate portion 131a and the second plate portion 131b are arranged along the circumference of 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 adopting an arc-shaped plate as the door plate body 131, the arc-shaped design can often disperse stress and reduce deformation or damage caused by external force impact or long-term use, thereby improving the durability and safety of the opening and closing door 13. On the other hand, the arc-shaped design has good fluid mechanics characteristics, which is beneficial to reducing wind resistance when the opening and closing door 13 is in an open state.

[0093] In some embodiments, in combination with Figure 6 and Figure 7 , the first sealing structure 11103 arranged at the third edge 11101 is formed as a protruding rib protruding towards the upstream side of the air inlet 1110, and the second sealing structure 1313 arranged at the fourth edge 11102 is formed as a protruding rib protruding towards the downstream side of the air inlet 1110; the second sealing structure 1313 arranged at the first edge 1311 is formed as a groove recessed from the downstream surface of the opening and closing door 13 towards the upstream surface, and the second sealing structure 1313 arranged at the second edge 1312 is formed as a groove recessed from the upstream surface of the opening and closing door 13 towards the downstream surface, and the protruding rib extends into the corresponding groove to form a concave-convex sealing fit.

[0094] Wherein, the "downstream surface of the opening and closing door 13" refers to the side surface of the opening and closing door 13 facing the downstream side of the air inlet 1110 when the opening and closing door 13 closes the air inlet 1110; and the "upstream surface of the opening and closing door 13" refers to the side surface of the opening and closing door 13 facing the upstream side of the air inlet 1110 when the opening and closing door 13 closes the air inlet 1110. In this way, when the opening and closing door 13 closes the air inlet 1110, the protruding rib at the third edge 11101 can extend into the groove at the first edge 1311, and the protruding rib at the fourth edge 11102 can extend into the groove at the second edge 1312, thereby achieving sealing of the edges on both sides of the width of the opening and closing door 13. Thus, the extension direction of the protruding rib can be substantially parallel to the air inlet 1110, thereby avoiding adversely affecting the air inlet effect, and processing the protruding rib at the air inlet 1110 can simplify the structure design and facilitate processing and implementation.

[0095] Exemplarily, the convex ribs can be formed as long strip-shaped ribs extending along the length direction of the air inlet 1110, and the grooves can be formed as long strip-shaped grooves extending along the length direction of the air inlet 1110, so that the convex ribs and the grooves are both long strip-shaped, and sealing in the entire length direction of the air inlet 1110 can be realized through the cooperation of the convex ribs and the grooves, so that the tightness of the closing of the air inlet 1110 by the switch door 13 can be further improved, and the problem of generating howling abnormal sound at the closed air inlet 1110 can be further improved. Moreover, the first sealing structure 11103 and the second sealing structure 1313 have simple structures and are convenient to process.

[0096] In some embodiments, in combination with Figure 6 and Figure 7 , the air inlet frame 111 includes a first long side frame 11111 and a second long side frame 11112 arranged at both sides of the width of the air inlet 1110, the downstream end of the first long side frame 11111 constitutes the third edge 11101, the downstream end of the second long side frame 11112 constitutes the fourth edge 11102, the first sealing structure 11103 arranged at the third edge 11101 extends from the downstream end of the first long side frame 11111 towards the upstream side of the air inlet 1110, and forms an avoidance space distance T with the first long side frame 11111, and the first sealing structure 11103 arranged at the fourth edge 11102 extends from the downstream end of the second long side frame 11112 towards the downstream side of the air inlet 1110.

[0097] Wherein, the "downstream end of the first long side frame 11111" refers to the position reached by the airflow after the first long side frame 11111 when the airflow enters the air inlet 1110; and the "downstream end of the second long side frame 11112" refers to the position reached by the airflow after the second long side frame 11112 when the airflow enters the air inlet 1110.

[0098] Therefore, the switch door 13 can close the air inlet 1110 at the downstream end close to the air inlet frame 111, so that the air inlet frame 111 has a larger space to accommodate the switch door 13, which can reduce the size of the switch door 13 protruding outside the air inlet 1110, thereby reducing the space occupation and realizing the miniaturization of the structure. Moreover, since the first sealing structure 11103 arranged at the third edge 11101 extends into the first long side frame 11111, and the avoidance space distance T is formed between the first sealing structure 11103 and the first long side frame 11111, the side end of the switch door 13 can be accommodated, so that the groove arranged at the first edge 1311 of the switch door 13 can cooperate with the convex rib at the first long side frame 11111.

[0099] In some embodiments, in combination with Figure 7 , Figure 11 and Figure 12The air inlet frame 111 includes short side frames 1112 arranged at both ends of the length of the air inlet 1110. Each short side frame 1112 is provided with a wind baffle 1113 protruding towards the direction of the opening and closing door 13. The wind baffles 1113 are arranged on both sides of the rotation axis L of the opening and closing door 13 along the width direction of the air inlet 1110. The wind baffles 1113 are used to shield the gap P between the length ends of the opening and closing door 13 and the short side frames 1112.

[0100] Thus, not only is the width of the opening and closing door 13 sealed, but also the length ends of the opening and closing door 13 are sealed to a certain extent, so that the tightness of the opening and closing door 13 closing the air inlet 1110 can be further improved, and the problem of whistling noise generated at the closed air inlet 1110 can be further improved. Moreover, the arrangement of the wind baffles 1113 does not hinder the rotation of the opening and closing door 13.

[0101] In some embodiments, in combination with Figure 1 , Figure 2 and Figure 3 , the length direction of the air inlet 1110 is the up-down direction, and the left and right sides of the air inlet frame 11 are each provided with an air inlet frame 111. The opening and closing doors 13 arranged in the air inlet frames 111 on the left and right sides are the same but are placed upside down. That is, the opening and closing doors 13 arranged in the air inlet frames 111 on the left and right sides are identical, but one of the opening and closing doors 13 is placed in the form of the other opening and closing door 13 rotated 180° about a horizontal axis.

[0102] For example, the two ends of the opening and closing door 13 are respectively provided with a first rotation shaft 132a and a second rotation shaft 132b. The opening and closing doors 13 arranged on the left and right sides are placed upside down, that is, the first rotation shaft 132a of one opening and closing door 13 is upward, and the second rotation shaft 132b is downward. The first rotation shaft 132a of the other opening and closing door 13 is downward, and the second rotation shaft 132b is upward.

[0103] Thus, by arranging two air inlet frames 111, the air inlet range can be increased, and the air inlet efficiency can be improved. Moreover, by arranging the opening and closing doors 13 arranged in the air inlet frames 111 on the left and right sides to be the same but placed upside down, a left-right symmetrical form can be formed, which meets the requirement of mirror image arrangement of the opening and closing doors 13 on the left and right sides (for example, as shown in Figure 26 ). Thus, only one type of opening and closing door 13 needs to be produced, which effectively reduces the production cost.

[0104] Exemplarily, the frame shapes of the air inlet frames 111 on the left and right sides are symmetrically arranged about the center plane S of the air inlet frame 11 in the left-right direction. Thus, the frame shapes of the two air inlet frames 111 are arranged in an axial symmetric form, when the switch doors 13 on the left and right sides are arranged in the same structure and upside down, the two switch doors 13 on the left and right sides are consistent with the cooperation of the two air inlet frames 111 on the left and right sides, the closing effect of the air inlets 1110 on the left and right sides is consistent and easy to control, and the structure of the air inlet frame 11 is simple and easy to process.

[0105] In some embodiments, in combination with Figure 1 and Figure 11 , the two air inlet frames 111 are respectively a first air inlet frame 111a and a second air inlet frame 111b, the upper edge frame 111a1 of the first air inlet frame and the lower edge frame 111b2 of the second air inlet frame are each provided with a first shaft hole 1115, the lower edge frame 111a2 of the first air inlet frame and the upper edge frame 111b1 of the second air inlet frame 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, the two ends of the switch door 13 are respectively provided with a first rotating shaft 132a and a second rotating shaft 132b, 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 first shaft hole 1115 in diameter and rotates together, and the second rotating shaft 132b is matched with the second shaft hole 1116 in diameter and rotates together.

[0106] It can be understood that "the first rotating shaft 132a is matched with the first shaft hole 1115 in diameter and rotates together" 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 second rotating shaft 132b is matched with the second shaft hole 1116 in diameter and rotates together" 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.

[0107] Since the upper edge frame 111a1 of the first air inlet frame 111a is provided with the first shaft hole 1115, the lower edge frame 111a2 of the first air inlet frame 111a is provided with the second shaft hole 1116, the first rotating shaft 132a of the switch door 13 installed in the first air inlet frame 111a is rotationally matched with the first shaft hole 1115 provided in the upper edge frame 111a1 of the first air inlet frame 111a upwards, and the second rotating shaft 132b of the switch door 13 installed in the first air inlet frame 111a is rotationally matched with the second shaft hole 1116 provided in the lower edge frame 111a2 of the first air inlet frame 111a downwards. At the same time, since the upper edge frame 111b1 of the second air inlet frame 111b is provided with the second shaft hole 1116, the lower edge frame 111b2 of the second air inlet frame 111b is provided with the first shaft hole 1115, the first rotating shaft 132a of the switch door 13 installed in the second air inlet frame 111b is rotationally matched with the first shaft hole 1115 provided in the lower edge frame 111b2 of the second air inlet frame 111b downwards, and the second rotating shaft 132b of the switch door 13 installed in the second air inlet frame 111b is rotationally matched with the second shaft hole 1116 provided in the upper edge frame 111b1 of the second air inlet frame 111b upwards.

[0108] In this way, the first rotating shaft 132a of the switch door 13 installed in the first air inlet frame 111a is upwards, and the second rotating shaft 132b is downwards, while the first rotating shaft 132a of the switch door 13 installed in the second air inlet frame 111b is downwards, and the second rotating shaft 132b is upwards. Although the switch doors 13 on both sides have the same structure, the positions are upside down, which can form a left-right symmetrical form, meet the needs of mirror image setting of the switch doors 13 on both sides (for example, as shown in Figure 26 In this way, the first rotating shaft 132a of the switch door 13 installed in the first air inlet frame 111a is upwards, and the second rotating shaft 132b is downwards, while the first rotating shaft 132a of the switch door 13 installed in the second air inlet frame 111b is downwards, and the second rotating shaft 132b is upwards. Although the switch doors 13 on both sides have the same structure, the positions are upside down, which can form a left-right symmetrical form, meet the needs of mirror image setting of the switch doors 13 on both sides (for example, as shown in

[0109] In this way, the first rotating shaft 132a of the switch door 13 installed in the first air inlet frame 111a is upwards, and the second rotating shaft 132b is downwards, while the first rotating shaft 132a of the switch door 13 installed in the second air inlet frame 111b is downwards, and the second rotating shaft 132b is upwards. Although the switch doors 13 on both sides have the same structure, the positions are upside down, which can form a left-right symmetrical form, meet the needs of mirror image setting of the switch doors 13 on both sides (for example, as shown in

[0110] According to the air duct assembly 1A of the embodiment of the utility model, since the switch doors 13 installed in the two air port frames (namely the first air port frame 111a and the second air port frame 111b) are the same, only the switch doors 13 of the two air port frames are upside down in the placement orientation, so only one kind of switch door 13 needs to be manufactured, thereby the production cost can be reduced. Moreover, by setting the first rotating shaft 132a and the second rotating shaft 132b with different diameters at the two ends of the switch door 13 respectively, and setting the first shaft hole 1115 and the second shaft hole 1116 with different hole diameters in the upper and lower frames of the two air port frames (namely the first air port frame 111a and the second air port frame 111b) respectively, the placement orientation of the switch door 13 can be determined according to the shaft hole, so that the switch door 13 can be assembled into the corresponding air port frame in the correct placement orientation, and the misoperation of the switch door 13 in the assembly process is effectively avoided.

[0111] In some embodiments, with reference to Figure 1 、 Figure 7 、 Figure 14 and Figure 15 , the first shaft hole 1115 at the upper end of the first air port frame 111a and the second shaft hole 1116 at the upper end of the second air port frame 111b are both radial open holes 1117, the second shaft hole 1116 at the lower end of the first air port frame 111a and the first shaft hole 1115 at the lower end of the second air port frame 111b are both circumferential closed holes 1118, the lower end rotating shaft of the switch door 13 is inserted downward into the circumferential closed hole 1118, and the upper end rotating shaft of the switch door 13 is inserted radially into the radial open hole 1117.

[0112] That is, the first rotating shaft 132a at the upper end of the switch door 13 installed in the first air port frame 111a is inserted radially into the radial open hole 1117 at the upper end of the first air port frame 111a, 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 port frame 111a, the second rotating shaft 132b at the upper end of the switch door 13 installed in the second air port frame 111b is inserted radially into the radial open hole 1117 at the upper end of the second air port 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 port frame 111b.

[0113] The utility model discloses a first shaft hole 1115 of first air port frame 111a upper end and the second shaft hole 1116 of second air port frame 111b upper end are designed as radial open hole 1117, make the lower end pivot of switch door 13 can be easily inserted radial open hole 1117 along the radial after the lower end pivot of switch door 13 inserts the circumference closed hole 1118, need not complex alignment and fixing step, improve the assembly efficiency, the second shaft hole 1116 of first air port frame 111a lower end and the first shaft hole 1115 of second air port frame 111b lower end are designed as circumference closed hole 1118, ensure the stable installation of switch door 13 lower end pivot, make switch door 13 can rotate stably, thereby improved the stability and reliability of whole structure.

[0114] Wherein, radial open hole 1117 refers to: the radial one side of the hole has open mouth, allows the pivot to enter and exit radial open hole 1117 from the open mouth along the radial, the width size of the open mouth of radial open hole 1117 can be slightly less than the diameter of the corresponding matched pivot, so that after the pivot enters radial open hole 1117, it will not spontaneously exit from radial open hole 1117 without exerting external force. Circumference closed hole 1118 refers to: the whole circumference of the hole is in closed form, without radial open mouth, the pivot can only be inserted along the axial direction of circumference closed hole 1118 into circumference closed hole 1118.

[0115] In some embodiments, referring to Figure 1 、 Figure 16 and Figure 17 , the first air port frame 111a upper end has the first guide slot 111a3 extending along the left-right direction, one end of the first guide slot 111a3 extends to the open place of the first shaft hole 1115 to communicate with the first shaft hole 1115, the other end of the first guide slot 111a3 is open to form an entrance for guiding the first pivot 132a; the second air port frame 111b upper end has the second guide slot 111b3 extending along the left-right direction, one end of the second guide slot 111b3 extends to the open place of the second shaft hole 1116 to communicate with the second shaft hole 1116, the other end of the second guide slot 111b3 is open to form an entrance for guiding the second pivot 132b; the hole diameter of the first shaft hole 1115 is greater than the hole diameter of the second shaft hole 1116, the slot width w1 of the first guide slot 111a3 is greater than the slot width w2 of the second guide slot 111b3.

[0116] Therefore, by arranging 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 introduced into the first shaft hole 1115 and the second shaft hole 1116 along the guide grooves, which not only simplifies the installation process, but also, by arranging 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 a larger groove width is connected to the shaft hole with a larger hole diameter, and the guide groove with a smaller groove width is connected to the shaft hole with a smaller hole diameter, so that the appropriate rotating shaft can be selected by observing the groove width, thereby further reducing the probability of incorrect installation and improving the accuracy of installation.

[0117] In the embodiment of the utility model, the guide groove extends along the left-right direction, and the size of the guide groove in the front-rear direction is the groove width, which can be greater than the diameter of the corresponding rotating shaft, so that the rotating shaft can smoothly enter the shaft hole through the guide groove. It can be understood that the groove width of the guide groove can be in the form of the same width as the direction of the shaft hole to the entrance in the left-right direction, or in the form of gradually widening in the left-right direction from the direction of the shaft hole to the entrance. In this way, during the installation and disassembly of the rotating shaft, the larger size of the entrance makes it easier for the rotating shaft to align with the guide groove, further improving the assembly efficiency and reducing the operation difficulty.

[0118] Referring to Figure 14 In some embodiments, the two ends of the opening of the radial opening hole 1117 have clamping portions 11171 respectively, and the distance w3 between the two clamping portions 11171 is less than the diameter D of the radial opening hole 1117, and the clamping portion 11171 is used to prevent the upper end rotating shaft of the switch door 13 from moving out of the radial opening hole 1117.

[0119] Through the design of the clamping portion 11171 at the two ends of the opening of the radial opening hole 1117, the stability of the upper end rotating shaft of the switch door 13 in the radial opening hole 1117 is ensured, which effectively prevents the rotating shaft from falling off or mispositioning 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 clamping portion 11171 also simplifies the limiting design of the switch door 13, and the limiting of the rotating shaft can be realized without additional and complex limiting devices. At the same time, during maintenance, it is also convenient to check the cooperation between the rotating shaft and the radial opening hole 1117, thereby reducing the maintenance cost.

[0120] In some embodiments, referring to Figure 1 , Figure 15 , Figure 18 and Figure 19, the first rotating shaft 132a and the second rotating shaft 132b are provided with transmission holes 1322, the transmission hole 1322 on the first rotating shaft 132a and the transmission hole 1322 on the second rotating shaft 132b are consistent in specification, the air duct assembly 1A further comprises: a driving motor 14, the upper side of the first air inlet frame 111a and the upper side of the second air inlet frame 111b are respectively provided with a driving motor 14, the driving motor 14 extends downwardly to form a driving shaft 141, the driving shaft 141 of the driving motor 14 on the upper side of the first air inlet frame 111a is inserted into the transmission hole 1322 of the first rotating shaft 132a through the first shaft hole 1115, and the driving shaft 141 of the driving motor 14 on the upper side of the second air inlet frame 111b is inserted into the transmission hole 1322 of the second rotating shaft 132b through the second shaft hole 1116. Wherein, the transmission hole 1322 consistent in specification means that the transmission hole 1322 on the first rotating shaft 132a and the transmission hole 1322 on the second rotating shaft 132b are completely same in shape and size, and can be used in cooperation with the same driving shaft 141.

[0121] Therefore, by arranging the driving motor 14 on the upper side of the air inlet frame 111 and connecting the upper end rotating shaft of the switch door 13, the upper end rotating shaft of the switch door 13 can be limited, the upper end rotating shaft is prevented from being separated from the radial open hole 1117, and the rotating stability of the switch door 13 is improved. In addition, by arranging the transmission hole 1322 on the first rotating shaft 132a and the second rotating shaft 132b, the driving shaft 141 of the driving motor 14 is directly inserted into the transmission hole 1322 of the rotating shaft, the direct connection between the driving motor 14 and the upper end rotating shaft of the switch door 13 is realized, the intermediate transmission link is reduced, the transmission efficiency is improved, the overall structure is more compact, and the integration is higher. The driving motor 14 is arranged on the upper side of the air inlet frame 111, daily maintenance and replacement are facilitated, once the driving motor 14 fails, the driving motor 14 can be easily replaced or repaired without disassembling the entire air duct assembly 1A, the setting position of the driving motor 14 is not easy to contact with accumulated water at the bottom, and the driving motor 14 will not hinder ventilation. In addition, the consistency of the transmission hole 1322 can realize standardization of the first rotating shaft 132a and the second rotating shaft 132b in the manufacturing and assembling process, so that only the same type of driving motor 14 needs to be selected, the manufacturing cost can be reduced, and the problem of reverse installation due to different motor specifications can be avoided.

[0122] Referring to Figures 20-25 , the assembling process of the air duct assembly 1A according to one specific embodiment of the utility model is described.

[0123] Step one, referring to Figure 20 , the lower end rotating shaft of the switch door 13 is inserted into the lower end circumferential closed hole 1118 of the corresponding side air inlet frame. Step two, referring to Figures 21-22 , the upper end rotating shaft of the switch door 13 is pushed into the radial open hole 1117 along the upper end guide groove of the corresponding side air inlet frame. Step three, referring to Figure 23, the driving shaft 141 of the driving motor 14 is inserted into the transmission hole of the upper end rotating shaft of the opening and closing door 13 through the upper end shaft hole of the corresponding air port frame in the vertical direction. Step four, referring to Figure 24 , the side mounting ears of the driving motor 14 are fixed on the screw columns above the air port frame by screws (not shown in the figure). Step five: referring to Figure 25 , the other opening and closing door 13 is rotated by 180 degrees in the horizontal direction, and then steps one to four are repeated to complete the assembly (in the state shown in Figure 16 ).

[0124] Next, the fresh air component 200 according to the second aspect of the present application is described.

[0125] Referring to Figure 26 and Figure 27 , 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 duct assembly 1A according to any one of the embodiments of the first aspect of the present application, the air inlet frame 11 is arranged at the rear side of the fresh air fan 1B and communicates with the inlet of the fresh air fan 1B, the rear part of the air inlet frame 11 is provided with a fresh air port 112, and the fresh air port 112 is provided with a valve 113, the purification module 2 is arranged above the fresh air module 1 and defines a purification air duct communicating with the outlet of the fresh air fan 1B, the purification module 2 includes a purification unit 22 arranged at least partially in the purification air duct, the air outlet module 3 is arranged above the purification module 2 and defines an air outlet duct communicating with the purification air duct, and the air outlet module 3 has an air outlet 32 communicating with the air outlet duct. Therefore, by arranging the air duct assembly 1A according to any one of the embodiments of the first aspect of the present application, the howling noise during the operation of the fresh air component 200 can be reduced.

[0126] The fresh air component 200 can introduce outdoor air through the fresh air port 112, and can introduce indoor air through the first air port frame 111a and the second air port frame 111b. The air introduced into the air inlet frame 11 can be filtered and purified by the purification module 2, effectively removing pollutants such as dust, pollen, bacteria, etc. in the air, thereby improving indoor air quality and protecting people's health; the fresh air fan 1B, the air inlet frame 11, the purification module 2 and the air outlet module 3 are integrated together to form the fresh air component 200, which has a compact structure and occupies a small space, and is convenient for installation and arrangement inside the building.

[0127] By arranging the valve 113 at the fresh air port 112 and the opening and closing doors 13 at the first air port frame 111a and the second air port frame 111b, the working mode of the fresh air component 200 can be switched. For example, in combination with Figure 4 , when the two opening and closing doors 13 are opened and the valve 113 is closed, the indoor air can be purified and circulated. For another example, in combination with Figure 5When the two switch doors 13 are closed and the valve 113 is opened, outdoor fresh air can be introduced.

[0128] Exemplarily, the fresh air fan 1B is a centrifugal fan capable of providing sufficient power; the valve 113 arranged at the fresh air outlet 112 is not limited in type, and it is appropriate to have a relatively simple structure, small size, short structure length, small volume, and light weight, facilitating installation and maintenance. When the valve 113 is a rotating plate valve, the passing area of the airflow in the open state is large, and the fluid resistance is small.

[0129] Next, the air conditioner 1000 according to the third aspect of the present application is described,

[0130] Referring to Figure 28 The air conditioner 1000 includes the air duct assembly 1A according to any embodiment of the first aspect of the present application or the fresh air component 200 according to any embodiment of the second aspect of the present application. Thus, by arranging the air duct assembly 1A according to any embodiment of the first aspect of the present application or the fresh air component 200 according to any embodiment of the second aspect of the present application, the howling noise of the air conditioner 1000 during operation can be reduced.

[0131] The air duct assembly 1A can be used for the fresh air component 200 or can not be used for the fresh air component 200. For example, when the air duct assembly 1A is not used for the fresh air component 200, the air duct assembly 1A can be used as a heat exchange air duct of the air conditioner 1000. For example, when the air duct assembly 1A is used for the fresh air component 200, the air conditioner 1000 can further include a ventilation and heat exchange component 100, and the ventilation and heat exchange component 100 is not limited in structure, for example, can include a fan and a heat exchanger, etc.

[0132] The type of the air conditioner 1000 according to the embodiments of the present application is not limited, and can be a split-type air conditioner, or an all-in-one air conditioner, etc. After the type of the air conditioner 1000 is determined, the relative position 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 an air conditioner cabinet, the ventilation and heat exchange component 100 can be arranged above the fresh air component 200.

[0133] Other structures of the air conditioner according to the embodiments of the present application, such as display modules and electric control boxes, etc., and operations are known to those skilled in the art, and will not be described in detail here.

[0134] In addition, the application scenarios of the fresh air component 200 according to the embodiments of the present application are not limited to the air conditioner 1000, and for example, can also be used in other devices that need to introduce fresh air.

[0135] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0136] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly specified and limited.

[0137] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, or the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0138] In the utility model, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be indirectly contacted through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0139] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without mutual contradiction.

[0140] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An air duct assembly, characterized by, The application relates to an air inlet frame, which comprises an air inlet frame defining an air inlet, and a first sealing structure arranged at the edges of the air inlet frame on both sides of the width of the air inlet. A switch door is arranged at the air inlet frame and rotatably arranged around a rotating axis extending along the length direction of the air inlet, and a second sealing structure is arranged at the edges of the switch door on both sides of the width of the switch door, and the second sealing structure forms a concave-convex sealing cooperation with the first sealing structure when the switch door closes the air inlet. One of the first sealing structure and the second sealing structure is formed as a convex rib extending along the length direction of the air inlet, and the other is formed as a concave groove, and the convex rib extends into the concave groove to form the concave-convex sealing cooperation.

2. The air duct assembly of claim 1, wherein, The rotating axis of the switch door is arranged at the central part of the width of the air inlet, the edges of the switch door on both sides of the width are a first edge and a second edge, the edges of the air inlet on both sides of the width are a third edge and a fourth edge, the first edge is adapted to move on the upstream side of the air inlet and forms the concave-convex sealing cooperation with the third edge, and the second edge is adapted to move on the downstream side of the air inlet and forms the concave-convex sealing cooperation with the fourth edge.

3. The air duct assembly of claim 1, wherein, The first sealing structure arranged at the third edge is formed as a convex rib protruding towards the upstream side of the air inlet, and the second sealing structure arranged at the fourth edge is formed as a convex rib protruding towards the downstream side of the air inlet.

4. The air duct assembly of claim 3, wherein, The second sealing structure arranged at the first edge is formed as a concave groove recessed from the downstream surface of the switch door towards the upstream surface, the second sealing structure arranged at the second edge is formed as a concave groove recessed from the upstream surface of the switch door towards the downstream surface, and the convex rib extends into the corresponding concave groove to form the concave-convex sealing cooperation. The air inlet frame comprises a first long side frame and a second long side frame arranged on both sides of the width of the air inlet, the downstream end of the first long side frame constitutes the third edge, the downstream end of the second long side frame constitutes the fourth edge, the first sealing structure arranged at the third edge extends from the downstream end of the first long side frame towards the upstream side of the air inlet and forms a clearance with the first long side frame, and the first sealing structure arranged at the fourth edge extends from the downstream end of the second long side frame towards the downstream side of the air inlet.

5. The air duct assembly of claim 4, wherein, The air inlet frame comprises short side frames arranged at both ends of the length of the air inlet, each of the short side frames is provided with a wind blocking rib protruding towards the switch door, the wind blocking rib is arranged on both sides of the rotating axis of the switch door along the width direction of the air inlet, and the wind blocking rib is used for shielding the gap between the both ends of the length of the switch door and the short side frame.

6. The air duct assembly of claim 3, wherein, ​ 7. The air duct assembly of claim 3, wherein, The switch door comprises a door plate body, the door plate body comprises a first plate part and a second plate part arranged in sequence along the direction from the first edge to the second edge, the second plate part moves on the downstream side of the air inlet, the first plate part moves on the upstream side of the air inlet, the door plate body is bent at the connection of the first plate part and the second plate part to make the first plate part and the second plate part arranged in steps, and the width of the second plate part is greater than the width of the first plate part.

8. The air duct assembly of claim 1, wherein, The length direction of the air inlet is the up-down direction, and one air inlet frame is arranged on each of the left and right sides of the air inlet frame.

9. The air duct assembly of claim 8, wherein, The frame bodies of the air inlet frames on the left and right sides are arranged in axial symmetry about the central plane of the air inlet frame in the left-right direction.

10. The air duct assembly of claim 8, wherein, The two air inlet frames are a first air inlet frame and a second air inlet frame, first shaft holes are formed in the upper edges of the first air inlet frame and the second air inlet frame, second shaft holes are formed in the lower edges of the first air inlet frame and the second air inlet frame, the diameters of the first shaft holes and the second shaft holes are different, the two ends of the switch door are respectively provided with a first rotating shaft and a second rotating shaft, the diameters of the first rotating shaft and the second rotating shaft are different, the first rotating shaft is matched with the first shaft hole in diameter and rotationally fitted, and the second rotating shaft is matched with the second shaft hole in diameter and rotationally fitted.

11. The air duct assembly of claim 10, wherein, The first shaft hole in the upper end of the first air inlet frame and the second shaft hole in the upper end of the second air inlet frame are both radially open holes, the second shaft hole in the lower end of the first air inlet frame and the first shaft hole in the lower end of the second air inlet 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.

12. The air duct assembly of claim 11, wherein, The upper end of the first air inlet frame is provided with a first guide groove extending in 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 entrance for guiding the first rotating shaft; the upper end of the second air inlet frame is provided with a second guide groove extending in 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 entrance 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.

13. The air duct assembly of claim 11, wherein, Transmission holes are formed in the first rotating shaft and the second rotating shaft, the transmission holes in the first rotating shaft and the second rotating shaft are of the same specification, and the air duct assembly further comprises: A driving motor is arranged above the first air inlet frame and above the second air inlet frame, a driving shaft of the driving motor extends downward, the driving shaft of the driving motor above the first air inlet frame is inserted into the transmission hole in the first rotating shaft through the first shaft hole, and the driving shaft of the driving motor above the second air inlet frame is inserted into the transmission hole in the second rotating shaft through the second shaft hole.

14. The air duct assembly of any one of claims 1-13, wherein, The air inlet frame is provided with a fresh air opening, and a valve for opening and closing the fresh air opening is arranged at the fresh air opening.

15. A fresh air component, characterized in that The air inlet frame is provided with a fresh air opening, and a valve for opening and closing the fresh air opening is arranged at the fresh air opening. The air inlet frame is provided with a fresh air opening, and a valve for opening and closing the fresh air opening is arranged at the fresh air opening. The air inlet frame is provided with a fresh air opening, and a valve for opening and closing the fresh air opening is arranged at the fresh air opening. The air inlet frame is provided with a fresh air opening, and a valve for opening and closing the fresh air opening is arranged at the fresh air opening.

16. An air conditioner characterized by comprising: The air inlet frame is provided with a fresh air opening, and a valve for opening and closing the fresh air opening is arranged at the fresh air opening. The air inlet frame is provided with a fresh air opening, and a valve for opening and closing the fresh air opening is arranged at the fresh air opening. The air inlet frame is provided with a fresh air opening, and a valve for opening and closing the fresh air opening is arranged at the fresh air opening. The air inlet frame is provided with a fresh air opening, and a valve for opening and closing the fresh air opening is arranged at the fresh air opening. The air inlet frame is provided with a fresh air opening, and a valve for opening and closing the fresh air opening is arranged at the fresh air opening. The air inlet frame is provided with a fresh air opening, and a valve for opening and closing the fresh air opening is arranged at the fresh air opening. The air inlet frame is provided with a fresh air opening, and a valve for opening and closing the fresh air opening is arranged at the fresh air opening. The air inlet frame is provided with a fresh air opening, and a valve for opening and closing the fresh air opening is arranged at the fresh air opening. The air inlet frame is provided with a fresh air opening, and a valve for opening and closing the fresh air opening is arranged at the fresh air opening. The air inlet frame is provided with a fresh air opening, and a valve for opening and closing the fresh air opening is arranged at the fresh air opening. The air inlet frame is provided with a fresh air opening, and a valve for opening and closing the fresh air opening is arranged at the fresh air opening. The air inlet frame is provided with a fresh air opening, and a valve for opening and closing the fresh air opening is arranged at the fresh air opening. The air inlet frame is provided with a fresh air opening, and a valve for opening and closing the fresh air opening is arranged at the fresh air opening. The air inlet frame is provided with a fresh air opening, and a valve for opening and closing the fresh air opening is arranged at the fresh air opening. The air inlet

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