Air duct structure, air outlet system and air conditioner

Abstract

The present invention discloses an air duct structure, an air outlet system, and an air conditioner, relating to the technical field of air conditioning. The air duct structure comprises: a fixed air duct wall and a movable air duct wall assembly, wherein the fixed air duct wall is provided with at least one air outlet; at least one movable air duct wall assembly is provided, which is connected to the fixed air duct wall and is located on one side of one of the air outlets; wherein the movable air duct wall assembly includes a drive device and a movable panel, wherein the drive device drives at least a portion of the movable panel to move and swing to adjust the inclination angle of the air guide inner wall and the corresponding air outlet opening value. The air duct structure, air outlet system, and air conditioner of the present invention can achieve diversified air outlet methods to meet the different needs of actual applications.

Description

Technical Field

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

[0002] At present, the indoor unit of the air conditioner has multiple functions such as cooling and heating. In terms of air supply method, the general indoor unit uses a guide plate to change the direction of air discharge at the air outlet to achieve the effect of sweeping air.

[0003] In some air conditioning structures in the prior art, a conversion plate is provided inside the air conditioner to guide the airflow to different air outlets for discharge, thereby achieving upper exhaust or lower exhaust, or achieving front exhaust or side exhaust.

[0004] For example, Chinese patent application number 201820334363.2 discloses an air-conditioning indoor unit, which includes a shell, an air duct, an electromagnetic component and a wind direction conversion plate. The shell has an upper air outlet and a lower air outlet. The electromagnetic component is arranged on the lower surface of the upper air duct wall of the air duct. The wind direction conversion plate is arranged in the air duct, and a magnetically absorbable material layer is attached to its upper surface. The plate is configured to rotate upward to a rotation position when the electromagnetic component is energized, and return to the initial position when the electromagnetic component is de-energized.

[0005] The structure of the air conditioner indoor unit is that when the electromagnetic component is energized, the electromagnetic component magnetically attracts the wind direction conversion plate and rotates it upward, realizing the upward blowing mode; when the electromagnetic component is de-energized, the wind direction conversion plate rotates downward under the action of its own weight, realizing the downward blowing mode.

[0006] Therefore, the wind direction conversion plate cannot stay at any position between the two extreme rotation positions of the wind direction conversion plate, so that the air conditioner indoor unit cannot adjust the air volume, and can only perform a separate upward blowing mode or downward blowing mode. Therefore, the air outlet mode is limited, the applicability is not strong, and it cannot meet the diverse usage needs of users in actual use.

[0007] Therefore, it is necessary to propose a more flexible and changeable air outlet solution with diverse air outlet modes. Summary of the Invention

[0008] In order to overcome at least one of the defects of the above-mentioned prior art, the present invention provides an air duct structure to optimize the air duct structure, adjust the air outlet according to needs, and enrich the air outlet mode.

[0009] Another object of the present invention is to provide an air outlet system to optimize the air duct structure of the air outlet system, adjust the air outlet according to needs, and enrich the air outlet modes.

[0010] Another object of the present invention is to provide an air conditioner to optimize the air duct structure of the air conditioner, adjust the air outlet according to needs, and enrich the air outlet modes.

[0011] The technical solution adopted by the present invention to solve the problem is:

[0012] According to one aspect of the present invention, the present invention provides an air duct structure, comprising:

[0013] A fixed air duct wall having at least one air outlet disposed thereon; and

[0014] A movable air duct wall assembly, at least one of which is provided corresponding to the air outlet;

[0015] Among them, the movable air duct wall assembly includes a driving device and a movable panel, the movable panel is movably connected to the fixed air duct wall and forms an air-guiding inner wall, the driving device is connected to the movable panel, and drives at least a part of the movable panel to swing relative to the fixed air duct wall to adjust the inclination angle of the air-guiding inner wall and adjust the opening value of the corresponding air outlet.

[0016] The air duct structure provided by the present invention includes a fixed air duct wall and a movable air duct wall assembly, wherein the movable air duct wall assembly includes a driving device and a movable panel. The driving device drives the movable panel to swing relative to the fixed air duct wall, thereby adjusting the opening size of the corresponding air outlet blocked by the movable panel, that is, the opening value of the corresponding air outlet, and the value can then adjust the air volume of the corresponding air outlet according to needs, making the air outlet mode more diversified; in addition, since the movable panel can adjust the direction of the airflow during the swinging process, the flow path distribution of the airflow inside the air duct structure is more reasonable and efficient, which is conducive to reducing vibration and noise.

[0017] Furthermore, the movable panel is a telescopic panel, and the driving device is connected to the telescopic panel to drive the telescopic panel to swing relative to the fixed air duct wall and drive the telescopic panel to extend and retract.

[0018] In one possible embodiment, the air outlet is arranged on the side of the fixed air duct wall, the retractable panel includes a flexible roller blind, the driving device includes a winding shaft assembly connected to the flexible roller and used to wind up the flexible roller blind, and a counterweight rod is also provided between the two ends of the flexible roller blind. The counterweight rod is movably arranged relative to the fixed air duct wall in a vertical direction or in a direction at an inclination angle to the vertical direction, and the counterweight rod abuts against the surface of the flexible roller blind.

[0019] Furthermore, a movable node is provided at one end of the telescopic panel or between both ends thereof, and a driving device is connected to the movable node and drives the movable node to move.

[0020] Furthermore, the telescopic panel includes a flexible rolling curtain, and the driving device includes a winding shaft assembly and a movable driving assembly. The winding shaft assembly is connected to the flexible rolling curtain and is used to roll up the flexible rolling curtain. The movable node is a movable rod arranged between the two ends of the flexible rolling curtain. The movable driving assembly is connected to the movable rod and drives the movable rod to move.

[0021] Furthermore, the telescopic panel includes a flexible roller blind, and the driving device includes a winding shaft assembly and a mobile driving assembly. The winding shaft assembly is connected to the flexible roller blind and is used to roll up the flexible roller blind. One end of the flexible roller blind is connected to the winding shaft assembly, and an active node is provided at the other end. The mobile driving assembly is connected to the active node and drives the active node to move.

[0022] Furthermore, the telescopic panel is a telescopic plate assembly, which includes a fixed plate and a movable plate. The movable plate moves relative to the fixed plate to telescope, wherein one of the fixed plate and the movable plate is hinged to the fixed air duct wall, and the other is provided with a movable node. The driving device includes a mobile driving assembly, which is connected to the movable node and drives the movable node to move.

[0023] Furthermore, the mobile driving component is a driving telescopic plate, wherein the driving telescopic plate includes a fixed end and a telescopic end that is telescopic relative to the fixed end, the fixed end is connected to the fixed air duct wall, and the telescopic end is connected to the active node.

[0024] Furthermore, the fixed air duct wall includes a side wall and an inner wall. The side walls are located on both sides of the inner wall. The side walls are also provided with guide components that provide movement guidance for the active node.

[0025] Furthermore, the guide assembly includes a slide groove provided on the side wall, and the movable node is slidably connected to the slide groove.

[0026] Furthermore, the mobile drive assembly includes a drive motor and a connecting rod mechanism, wherein the connecting rod mechanism includes a crank and a connecting rod, the drive motor is connected to the crank and drives it to rotate, one end of the connecting rod is hinged to the crank, and the other end is hinged to the active node.

[0027] As a possible embodiment, the fixed air duct wall includes two first fixed walls and a second fixed wall that are opposite and spaced apart, and two groups of movable air duct wall components are provided, wherein one group of movable air duct wall components is connected to the first fixed wall to form a first air guide wall, and the other group of movable air duct wall components is connected to the second fixed wall to form a second air guide wall, and the first air guide wall and the second air guide wall form an air duct for air flow.

[0028] According to another aspect of the invention, the present invention provides an air outlet system, including: a shell, provided with an air inlet duct and an air outlet duct; a fan, arranged between the air inlet duct and the air outlet duct; and any one of the above-mentioned air duct structures, arranged in the air outlet duct.

[0029] Furthermore, at least two air outlets are provided on the shell, and the air outlets are connected to the air outlet flow channel. The air outlet system also includes an air guide plate assembly and an annular air outlet structure. The air guide plate assembly and the annular air outlet structure are respectively connected to different air outlets.

[0030] Furthermore, the air guide plate assembly and the annular air outlet structure are arranged on different sides of the shell.

[0031] Furthermore, the annular air outlet structure is arranged at the front end or side of the shell.

[0032] Furthermore, the air guide plate assembly is arranged at the lower end of the shell.

[0033] According to another aspect of the invention, the present invention provides an air conditioner, comprising a heat exchanger and any one of the above-mentioned air outlet systems, wherein the heat exchanger is arranged in a housing of the air outlet system and is located in an air inlet flow channel.

[0034] It can be seen from the above technical solutions that the embodiments of the present invention have at least the following advantages and positive effects:

[0035] 1) Optimize the air duct structure and configure the air duct structure to include a fixed air duct wall and a movable air duct wall assembly. The driving device of the movable air duct wall assembly drives the movable plate to swing, so that the inclination angle of the air guide wall formed by the movable plate and the fixed air duct wall changes, thereby adjusting the wind direction. In addition, the size of the air outlet blocked by the movable plate is adjusted, that is, the opening value of the air outlet is adjusted to achieve the effect of adjusting the air volume. In actual use, it meets the need for air volume adjustment.

[0036] 2) The movable panel is set as a telescopic panel. When the telescopic panel swings under the drive of the driving device, it can expand or contract with the drive of the driving device, so that the telescopic panel can better adjust the flow direction of the airflow, making the flow path distribution of the airflow inside the air duct structure more reasonable and efficient, which is conducive to reducing vibration and noise. Moreover, the telescopic panel is retractable, which is convenient for storage during the opening of the air outlet, reducing the impact on the air outlet;

[0037] 3) The driving device can drive one end of the telescopic panel to move or drive the position between the telescopic panels to move. The movable air duct wall component adopts a variety of structural deformations to achieve the purpose of adjusting the size of the air outlet opening;

[0038] 4) The air outlet system with optimized air duct structure can flexibly adjust the air volume at the air outlet, and cooperate with the air guide plate assembly and the annular air outlet structure to achieve diversified air outlet modes to meet the diverse air outlet needs of actual applications;

[0039] 5) Air conditioners that use an air outlet system with an optimized air duct structure can adjust the air volume and diversify the air outlet system. In the heating, cooling and other modes of the air conditioner, the air outlet direction and air outlet mode can be adjusted as needed to meet the actual needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 Schematic diagram of the overall structure of an air conditioner in one embodiment of the present invention;

[0041] Figure 2 yes Figure 1 Enlarged view of part A in the middle;

[0042] Figure 3 1 is an exploded schematic diagram of the overall structure of an air conditioner in one embodiment of the present invention;

[0043] Figure 4 1 is a schematic structural diagram of a movable air duct wall assembly of an air duct structure in Example 1 of the present invention;

[0044] Figure 5 yes Figure 4 Side view of;

[0045] Figure 6 2 is a schematic structural diagram of a movable air duct wall assembly of an air duct structure in Example 2 of the present invention;

[0046] Figure 7 Schematic diagram of the structure of the movable air duct wall assembly of the air duct structure in Example 3 or Example 4 of the present invention;

[0047] Figure 8 is a structural schematic diagram of the movable air duct wall assembly of the air duct structure in Example 4 or Example 5 of the present invention;

[0048] Figure 9 This is a schematic diagram of the internal structure of a fan system in a top view according to Example 8 of the present invention;

[0049] Figure 10 This is a schematic diagram of the working state of the air conditioner in one embodiment of the present invention with circular air outlet;

[0050] Figure 11 This is a schematic diagram of an air conditioner in one embodiment of the present invention in a working state with the air outlet vertically discharging air downward;

[0051] Figure 12 This is a schematic diagram of an air conditioner in one embodiment of the present invention in a working state with the air outlet closed;

[0052] Figure 13 1 is a schematic diagram of a first working state of an air duct system and an air conditioner using the air duct structure of Example 7 of the present invention;

[0053] Figure 14 1 is a schematic diagram of a second working state of an air duct system and an air conditioner using the air duct structure of Example 7 of the present invention;

[0054] Figure 15 This is a schematic diagram of the third working state of the air duct system and the air conditioner using the air duct structure of Example 7 of the present invention.

[0055] The meanings of the reference numerals are as follows:

[0056] 1. Air conditioner; 11. Heat exchanger; 12. Insulation layer; 13. Display assembly; 2. Air outlet system; 21. Housing; 211. Air inlet duct; 2111. Filter; 212. Air outlet duct; 22. Fan; 23. Air guide plate assembly; 231. Air guide plate body; 2311. Lifting frame; 232. Air guide drive component; 24. Annular air outlet structure; 241. Outer frame; 242. Center panel; 2421. Fixing rod; 243. Air outlet gap; 244. Internal cavity; 3. Air duct structure; 31. Fixed air duct wall; 3101. First fixed wall; 3102. First fixed wall Two fixed walls; 311, air outlet; 312, side wall; 313, inner wall; 32, movable air duct wall assembly; 321, driving device; 3211, driving motor; 3212, connecting rod mechanism; 32121, crank; 32122, connecting rod; 3213, driving telescopic plate; 32131, fixed end; 32132, telescopic end; 322, telescopic panel; 33, movable node; 34, flexible roller blind; 341, connecting plate; 35, reeling shaft assembly; 36, guide assembly; 361, slide; 37, telescopic plate assembly; 371, fixed plate; 372, movable plate. DETAILED DESCRIPTION

[0057] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0058] In the description of the present invention, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0059] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0060] Example 1

[0061] See Figures 1 to 5 The present invention discloses an air duct structure 3, which is used to adjust the direction and size of the air flow, including a fixed air duct wall 31 and a movable air duct wall assembly 32, wherein the fixed air duct wall 31 is provided with an air outlet 311. In this embodiment, two air outlets 311 are provided.

[0062] In other possible implementations, only one air outlet 311 may be provided.

[0063] At least one movable air duct wall assembly 32 is provided, which is connected to the fixed air duct wall 31 and located on one side of one of the air outlets 311 for adjusting the opening size of the corresponding air outlet 311 .

[0064] In other possible implementations, the movable air duct wall assembly 32 may be configured to be connected to the fixed air duct wall 31 and located within the air outlet 311 .

[0065] In this embodiment, a group of movable air duct wall components 32 is provided to adjust the opening size of one of the two air outlets 311 .

[0066] In other possible embodiments, the movable air duct wall assembly 31 can be set one-to-one corresponding to the air outlet 311. For example, if there are two air outlets 311, one movable air duct wall assembly 32 is set corresponding to each air outlet 311, thereby adjusting the opening values ​​of the two air outlets 311 respectively and adjusting the wind direction from both sides.

[0067] Alternatively, in other possible embodiments, if the air outlet 311 is set to N, and N is greater than 2, the movable air duct wall assembly 32 can be set to N-1 to adjust the opening size of the N-1 air outlets 311 to achieve the purpose of adjusting the air outlet.

[0068] See Figures 1 to 5 In this embodiment, the movable air duct wall assembly 32 includes a driving device 321 and a movable panel (not marked in the figure), wherein the movable panel is movably connected to the fixed air duct wall 31 to form an air guide inner wall, and the movable panel is connected to the driving device 321. The driving device 321 can drive the movable panel to swing and adjust the inclination angle of the air guide inner wall, and the movable panel can movably adjust the size of the opening of the air outlet 311 to make the opening value of the corresponding air outlet adjustable; when the movable panel swings, the size of the air outlet 311 blocked by the movable panel is adjusted, that is, the opening of the air outlet 311 is adjusted to achieve the function of airflow guidance and air volume adjustment.

[0069] The movable panel may be a non-retractable panel.

[0070] In this embodiment, the movable panel is a telescopic panel 322, and the driving device 321 is connected to the telescopic panel 322, which can drive the telescopic panel 322 to retract and swing, so as to adjust the opening size of the telescopic panel 322 closed to the corresponding air outlet 311, that is, adjust the opening size of the corresponding air outlet 311 and guide the direction of the airflow.

[0071] It should be noted that the telescopic panel 322 can be a flexible panel, a rigid panel, or a combination of a flexible panel and a rigid panel.

[0072] The beneficial effect of adopting this structure is that, since the telescopic panel 322 can be extended or retracted as the driving device 321 drives, the telescopic panel 322 can also adjust the direction of airflow. For example, when the telescopic panel 322 adjusts the opening of the corresponding air outlet 311 to be smaller, the telescopic panel 322 can guide the airflow to other air outlets 311, thereby reducing the airflow gathering at the air outlet 311 with a smaller opening and reducing the possibility of noise generation; and when the telescopic panel 322 adjusts the opening of the corresponding air outlet 311 to be larger, the telescopic panel 322 can correspondingly guide more airflow to the air outlet 311, thereby increasing the air output. Thus, further, the airflow rate allocated to the air outlet 311 can be adjusted according to the opening size of the air outlet 311, so that the flow path distribution of the airflow inside the air duct structure 3 is more reasonable and efficient, which is conducive to reducing the generation of vibration and noise; furthermore, the telescopic panel is retractable, which is convenient for the storage of the air outlet during the opening process, reducing the impact on the air output.

[0073] In the figure, P and Q indicate the inlet airflow direction and the outlet airflow direction respectively.

[0074] As a preferred embodiment, an active node 33 is provided at one end of the telescopic panel 322 or between its two ends, and the driving device 321 is connected to the active node 33. The driving device 321 drives the active node 33 to move, thereby achieving the purpose of driving the telescopic panel 322 to move and adjusting the opening size of the corresponding air outlet 311.

[0075] See Figures 4-5The retractable panel 322 includes a flexible roller curtain 34, and the driving device 321 includes a retracting shaft assembly 35 for retracting the flexible roller curtain 34 and a movable driving assembly that drives the movable 33 to move, wherein one end of the flexible roller curtain 34 is fixed to the fixed air duct wall 31, and the other end is connected to the retracting shaft assembly 35. The movable node 33 is a movable rod (not marked in the figure) arranged between the two ends of the flexible roller curtain 34. The movable rod is connected to the movable driving assembly and abuts against the surface of the flexible roller curtain 34. Therefore, when the movable driving assembly drives the movable rod to move, the retracting shaft assembly 35 cooperates with the action of the movable driving assembly to retract the flexible roller curtain 34. Specifically, the retracting shaft assembly 35 applies a retracting force to the flexible roller curtain 34 to keep the flexible roller curtain 34 taut. The taut flexible roller curtain 34 is equivalent to a gate that closes the air outlet 311 and can block the air outlet 311. The movable driving assembly drives the movable rod to move and can adjust the size of the air outlet 311 closed by the flexible roller curtain 34.

[0076] Furthermore, it should be noted that, in order to ensure the sealing effect of closing the air outlet 311, the flexible roller blind 34 is made of an airtight flexible material, such as polyester fiber cloth.

[0077] The structure of the winding shaft assembly 35 includes a rotating shaft (not shown in the figure) and a power component (not shown in the figure) that drives the rotating shaft to rotate. The power component can be a motor, or a torsion spring or a clockwork spring. One end of the flexible roller blind 34 is fixed to the rotating shaft, and tensioning and winding are achieved under the drive of the power component.

[0078] The surface where the movable rod contacts the flexible rolling curtain 34 is smoothed.

[0079] Preferably, the movable rod is configured to be rotatable, that is, it can rotate as the flexible roller blind 34 extends or contracts, so that the contact between the movable rod and the flexible roller blind 34 is replaced by rolling friction instead of sliding friction, reducing damage to the flexible roller blind 34 and extending its service life.

[0080] Alternatively, in other solutions, a roller or a ball may be provided on the movable rod, and the roller or the roller may abut against the surface of the flexible rolling curtain 34 , thereby also achieving the purpose of reducing wear on the flexible rolling curtain 34 .

[0081] See Figures 1 to 3 In this embodiment, the fixed air duct wall 31 includes a side wall 312 and an inner wall 313. The side walls 312 are located on both sides of the inner wall 313. The air outlet 311 is opened on the inner wall 313. The movable air duct wall component 32 is also arranged on the inner wall 313. The side wall 312 is also provided with a guide component 36 that provides movement guidance for the movable node 33.

[0082] The flexible rolling curtain 34 is fixed to the inner walls 313 on both sides of the side wall 312 via a connecting plate 341 .

[0083] Further, as a preferred embodiment, in this embodiment, the guide assembly 36 includes a slide groove 361 arranged on the side wall 312, and the movable node 33 is slidingly connected to the slide groove 361. In this embodiment, the movable rod is slidingly matched with the slide groove 361 and slides in the slide groove 361.

[0084] Furthermore, the sliding groove 361 may be arranged along an air outlet direction perpendicular to the air outlet 311 ; this arrangement is the optimal arrangement, which can simplify the installation structure.

[0085] In other embodiments, the opening direction of the slide groove 361 can also be at an inclined angle to the air outlet direction of the air outlet 311; through such a setting, the purpose of enabling the telescopic panel 322 to change the size of the opening of the air outlet 311 when the active node 33 moves along the slide groove 361 can be achieved.

[0086] In addition, in other possible implementations, the guide component 36 may also be a slide rail. The slide rail may be a conventional slide rail on the market, and is connected to the active node 33 via the slide rail, thereby providing a movement guide for the active node 33 .

[0087] See Figures 4-5 In this embodiment, the mobile driving component includes a driving motor 3211 and a connecting rod mechanism 3212, wherein the connecting rod mechanism 3212 includes a crank 32121 and a connecting rod 32122, the driving motor 3211 is connected to the crank 32121 and drives it to rotate, one end of the connecting rod 32122 is hinged to the crank 32121, and the other end is hinged to the movable rod; thus, by driving the connecting rod 32122 by the driving motor 3211, and then driving the movable rod to move, the telescopic panel 322 can be extended or retracted, that is, the flexible roller blind 34 can be extended or retracted, and this structure has a smaller volume when retracted, thereby ensuring that the air outlet of the air outlet 311 is blocked as little as possible in the retracted state, so that the air outlet of the air outlet 311 is not blocked.

[0088] In other possible implementations, the mobile drive assembly may also be a conventional telescopic rod, such as an electric telescopic rod.

[0089] The working principle of this embodiment is:

[0090] When air needs to be discharged from only one air outlet 311, the movable rod is driven by the mobile driving assembly to move downward along the slide slot 361 in the direction shown in the figure. When the movable rod moves downward, the flexible roller curtain 34 is driven to tilt and extend downward. The surface of the flexible roller curtain 34 on one side of the movable rod (the surface of the flexible roller curtain 34 on the right side of the movable rod in the figure) blocks the corresponding air outlet 311, and the surface of the flexible roller curtain 34 on the other side obliquely guides the airflow to the open air outlet 311, thereby achieving air discharge from a single air outlet 311.

[0091] When air needs to be discharged from the two air outlets 311 at the same time, the movable rod is driven by the mobile driving assembly to move upward in the slide groove 361 as shown in the figure. During the upward movement of the movable rod, the winding shaft assembly 35 retracts the flexible roller curtain 34 accordingly to keep the flexible roller curtain 34 tensioned, so that the flexible roller curtain 34 opens the corresponding air outlet 311, and the two air outlets 311 discharge air at the same time. In addition, the driving device 321 drives the movable rod to stop at any position of the slide groove 361, and can maintain a fixed opening size, thereby maintaining the air volume of the corresponding air outlet 311, and can realize the adjustment and control of the air volume size of the corresponding air outlet 311.

[0092] Therefore, by adopting this air duct structure 3, it is possible to realize multi-directional air outlet and flexibly adjust the air volume to meet various practical use needs.

[0093] Example 2

[0094] Based on Example 1, the difference between this embodiment and Example 1 is that:

[0095] See Figure 6 The telescopic panel 322 includes two winding shaft assemblies 35, and the two ends of the flexible roller blind 34 are respectively connected to two different winding shaft assemblies 35; thus, when the driving rod drives the movable rod to move, the two winding shaft assemblies 35 can be wound or unwound at the same time, so that the tension of the flexible roller blind 34 is better and the sealing effect of the sealed air outlet 311 is better.

[0096] Example 3

[0097] See Figure 7 Based on Example 1, the difference between this embodiment and Example 1 is only that, in this embodiment, the structure of the telescopic panel 322 is: one end of the flexible roller blind 34 is connected to the winding shaft assembly 35, and the other end is the active node 33, and the mobile driving assembly drives the active node 33 to move to achieve the adjustment of the closed size of the air outlet 311.

[0098] The working principle of this embodiment differs from that of embodiment 1 in that one end of the flexible roller curtain 34 driven by the mobile driving component moves, thereby driving the flexible roller curtain 34 to expand or contract, thereby controlling the size of the opening blocked by the flexible roller curtain 34 and controlling the opening size of the corresponding air outlet 311, thereby adjusting the air output.

[0099] Example 4

[0100] See Figure 7Based on Example 3, the only difference between this embodiment and Example 3 is that the mobile driving component is a driving telescopic plate 3213, and the driving telescopic plate 3213 includes a fixed end 32131 and a telescopic end 32132 that is telescopic relative to the fixed end 32131, wherein the fixed end 32131 is connected to the fixed air duct wall 31, and the telescopic end 32132 is connected to the active node 33; the fixed end 32131 and the telescopic end 32132 are both plates, which can block the air outlet 311 to achieve shielding of the opening.

[0101] The telescopic structure of the telescopic end 32132 and the fixed end 32131 can be set to include a motor and a gear rack structure, that is, a gear is set on the telescopic end 32132 (or the fixed end 32131), and a rack is set on the fixed end 32131 (or the telescopic end 32132). The motor drives the gear to operate, driving the rack to move in a straight line, thereby making the telescopic end 32132 and the fixed end 32131 move relative to each other to achieve telescopic and retracting.

[0102] Of course, an electric push rod may also be used to drive the telescopic end 32132 to move relative to the fixed end 32131 .

[0103] Furthermore, in this embodiment, the fixed end 32131 is fixed to the fixed air duct wall 31, and the telescopic direction of the driving telescopic plate 3213 is along the opening direction of the slide groove 361, so that the driving telescopic plate 3213 can fit with the side of the air outlet 311 to form a better sealing effect.

[0104] In other embodiments, the fixed end 32131 can also be hinged to the fixed air duct wall 31, that is, the extension and retraction direction of the driving telescopic plate 3213 can be set to be not parallel to the direction of the slide groove 361. On the premise that the slide groove 361 provides guidance for the movable rod, the extension and retraction of the driving telescopic plate 3213 can also achieve the above-mentioned purpose of the invention, that is, to achieve the guidance of the airflow and the adjustment of the opening size of the corresponding air outlet 311.

[0105] The working principles of this embodiment differ from those of embodiment 3 in that:

[0106] In the process of driving the telescopic plate 3213 to extend or shorten, on the one hand, the flexible roller curtain 34 can be extended or contracted, and the airflow is guided by the flexible roller curtain 34; on the other hand, the driving telescopic plate 3213 itself can form a shield for the air outlet 311, thereby controlling the opening size of the air outlet 311. Therefore, the cooperation between the flexible roller curtain 34 and the driving telescopic plate 3213 can realize the guidance of the airflow and the adjustment of the opening size of the corresponding air outlet 311.

[0107] Example 5

[0108] See Figure 8Based on Example 3 or Example 4, the only difference between this embodiment and Example 3 or Example 4 is that, in this embodiment, the telescopic panel 322 is a telescopic plate assembly 37, one end of the telescopic plate assembly 37 is connected to the fixed air duct wall 31, and the other end is an active node 33.

[0109] Specifically, the telescopic plate assembly 37 includes a fixed plate 371 and a movable plate 372. The movable plate 372 can move relative to the fixed plate 371 to achieve telescoping. One of the fixed plate 371 and the movable plate 372 is connected to the fixed air duct wall 31, and an active node 33 is provided at one end of the other for connection with the mobile drive assembly and moves under the drive of the mobile drive assembly.

[0110] In this embodiment, the movable plate 372 is connected to the fixed air duct wall 31, and the fixed plate 371 is connected to the movable drive assembly.

[0111] Furthermore, since the telescopic plate assembly 37 will swing in an angular direction during the movement process of extending and closing the air outlet 311 under the drive of the mobile driving assembly, the movable plate 372 needs to be arranged to be hinged to the fixed air duct wall 31 .

[0112] The working principle of this embodiment differs from the working principle of Embodiment 3 or 4 in that:

[0113] The telescopic plate assembly 37 replaces the retractable flexible roller blind 34 as the telescopic panel 322. When the mobile driving assembly drives the active node 33 to move, it can drive the telescopic plate to extend or contract, and the fixed plate 371 and the movable plate 372 of the telescopic plate can form a movable air duct wall to guide the airflow and cooperate with the adjustment of the opening size of the air outlet 311.

[0114] Example 6

[0115] Based on Example 1, the difference between this embodiment and Example 1 is that, in this embodiment,

[0116] The air outlet 311 is arranged on the side of the fixed air duct wall 31, the telescopic panel 322 includes a flexible roller curtain 34, and the driving device 321 includes a winding shaft assembly 35 for winding the flexible roller curtain 34, wherein the winding shaft assembly 35 is fixed relative to the fixed air duct wall 31, one end of the flexible roller curtain 34 is fixed to the fixed air duct wall 31, and the other end is connected to the winding shaft assembly 35, and a counterweight rod (not marked in the figure) is also provided between the two ends of the flexible roller curtain 34, and the counterweight rod is movably arranged in the vertical direction relative to the fixed air duct wall 31, and the counterweight rod is in contact with the surface of the flexible roller curtain 34.

[0117] In this embodiment, with the cooperation of the reeling shaft assembly 35 in unwinding the flexible roller curtain 34, the flexible roller curtain 34 is stretched downward by relying on the weight of the counterweight rod, so that the flexible roller curtain 34 extends; when the flexible roller curtain 34 is retracted, the gravity of the counterweight rod is overcome by the reeling shaft assembly 35, and the flexible roller curtain 34 is retracted, thereby causing the telescopic panel 322 to shrink and swing relative to the fixed air duct wall 31, thereby adjusting the airflow direction and the air volume.

[0118] In other possible implementations, the counterweight rod may also be configured to move up and down relative to the fixed air duct wall 31 in a direction forming an inclination angle with the vertical direction.

[0119] Example 7

[0120] See Figures 13-15 Based on the above embodiments, the difference between this embodiment and the above embodiments is that:

[0121] The fixed air duct wall 31 includes two first fixed walls 3101 and a second fixed wall 3102 that are opposite and spaced apart. Two groups of movable air duct wall components 32 are provided, wherein one group of movable air duct wall components 32 is connected to the first fixed wall 3101 to form a first air guide wall (not marked in the figure), and the other group of movable air duct wall components 32 is connected to the second fixed wall 3102 to form a second air guide wall (not marked in the figure). The first air guide wall 3101 and the second air guide wall 3102 form a ventilation flow channel (not marked in the figure) for air flow; thus, the two groups of movable air duct wall components 32 can be adjusted independently or simultaneously to adjust the flow direction and flow area of ​​the ventilation flow channel.

[0122] Furthermore, in this embodiment, an air outlet 311 is provided at the bottom and side of the fixed air duct inner wall 313, wherein one group of movable air duct wall components 32 is provided on one side of the bottom air outlet 311, thereby adjusting the airflow direction and the size of the air outlet from the bottom air outlet 311, and another group of movable air duct inner walls 313 is provided on one side of the side air outlet 311, thereby adjusting the airflow direction and the size of the air outlet from the side air outlet 311.

[0123] It should be noted that, in the figure, P and Q indicate the direction of the inlet air flow and the direction of the outlet air flow, respectively.

[0124] Example 8

[0125] See Figure 1 、 Figures 9-12 、 Figures 13-15The present invention further discloses an air outlet system 2, comprising a shell 21, a fan 22 and any one of the air duct structures 3 of the above-mentioned embodiments 1 to 7, wherein an air inlet duct 211 and an air outlet duct 212 are provided on the shell 21, and the fan 22 is installed in the shell 21 and is located between the air inlet duct 211 and the air outlet duct 212 to provide power for the air flow, that is, to transport the air flow entering from the air inlet duct 211 to the air outlet duct 212.

[0126] The housing 21 is further provided with a filter 2111 at the entrance of the air inlet channel 211 for filtering the intake air.

[0127] The air duct structure 3 is provided in the air outlet channel 212 for distributing the discharge of air flow.

[0128] Furthermore, as a preferred embodiment, an air guide plate assembly 23 and an annular air outlet structure 24 are also provided on the shell 21. The air guide plate assembly 23 and the annular air outlet structure 24 are connected to different air outlets 311 in the air duct structure 3, wherein the air guide plate assembly 23 is used to achieve fixed-angle air outlet or swept air, and the annular air outlet structure 24 is used for annular air outlet, which reduces the airflow directly hitting the human body, moderates the air outlet, and achieves the purpose of comfort.

[0129] Furthermore, the air guide plate assembly 23 and the annular air outlet structure 24 are arranged on different sides of the housing 21 .

[0130] Further, as a preferred embodiment, Figure 1 As shown, in this embodiment, the annular air outlet structure 24 is provided at the front end of the housing 21 , that is, the right side in the figure.

[0131] See Figure 9 As a possible implementation manner, the annular air outlet structure 24 is provided on the side of the shell 21 .

[0132] Through such an arrangement, compared with the forward air outlet from the front end of the shell, the circular air outlet from the side can further mitigate the air outlet and achieve a windless feeling.

[0133] Further, as a preferred embodiment, see Figure 1 In this embodiment, the air guide plate assembly 23 is arranged at the lower end of the shell 21.

[0134] In other possible implementations, the air deflector assembly 23 may also be disposed at the upper end or side of the housing 21 .

[0135] The setting of the air guide plate assembly 23 and the annular air outlet structure 24 further increases the diversity of the air outlet mode, and can realize sweeping air and annular air outlet. Combined with the air duct structure 3, when the air duct structure 3 is configured with different air outlets 311 to discharge air, the air guide plate assembly 23 and the annular air outlet structure 24 can be combined to meet different usage needs.

[0136] For example, Figure 1 、 Figures 10-12 As shown, the air duct structure 3 is configured so that when only the air outlet 311 located on the lower side of the housing 21 is discharged, the wind guide plate assembly 23 adjusts the angle of the wind outlet downward, or the wind guide plate assembly 23 can swing periodically to achieve wind sweeping;

[0137] like Figure 10 As shown, when the air duct structure 3 is configured so that the air outlets 311 located on the lower side and right side of the shell 21 discharge air at the same time, if the air guide plate assembly 23 is closed, the air outlet 311 on the lower side of the shell 21 is closed. At this time, the annular air outlet structure 24 realizes an annular air discharge to the right side of the shell 21; Figure 1 As shown, if the air guide plate assembly 23 is operated simultaneously, the air outlet angle adjustment and air sweeping on the lower side of the shell 21 can be achieved, and the annular air outlet on the right side of the shell 21 can also be achieved;

[0138] like Figure 12 As shown, if the air guide plate assembly 23 is closed and the variable air duct wall assembly closes the corresponding air outlet 311, the air outlet 311 is closed and the air duct system stops discharging air.

[0139] Furthermore, the annular air outlet structure 24 includes an outer frame 241 and a center panel 242, wherein the outer frame 241 and the center panel 242 are both fixed to the shell 21, the center panel 242 is arranged within the range of the outer frame 241, and is connected and fixed to the outer frame 241 by a fixing rod 2421, and an air outlet gap 243 is formed between the circumference of the center panel 242 and the circumference of the outer frame 241, and a gap is maintained between the plate surface of the center panel 242 and the surface of the outer frame 241 to form an internal cavity 244 connected to the air outlet 311, so that the airflow discharged from the air outlet 311 is transported to the air outlet gap 243 on the circumferential side.

[0140] Furthermore, the air deflector assembly 23 includes an air deflector body 231 and an air deflector drive component 232. The air deflector body 231 is rotatably connected to the shell 21 and can move relative to the shell 21 to open or close the corresponding air outlet 311. The air deflector drive component 232 includes a rotating drive element (not shown in the figure) for driving the air deflector body 231 to rotate and a moving drive element (not shown in the figure) for driving the air deflector body 231 to move.

[0141] like Figure 10 、 Figure 12 As shown, the air guide plate body 231 is movably connected to the shell 21 in the vertical direction and is vertically raised and lowered under the drive of the mobile driving element. When the air guide plate body 231 is raised, the air outlet 311 can be closed, and when the air guide plate is lowered, the air outlet 311 can be opened.

[0142] The mobile drive element can adopt an electric push rod.

[0143] Alternatively, the mobile driving element can be configured to include a motor, a gear, and a rack, wherein a driving rack is fixed on the air guide plate, a motor is provided on the shell 21, and a gear meshing with the driving rack is fixed on the rotating shaft of the motor. Thus, the gear rack is driven by the motor to operate, and the lifting and lowering of the air guide plate body 231 can also be achieved.

[0144] The rotation drive element may be a servo motor.

[0145] In other possible embodiments, the rotating drive element can also be configured to include a motor and a synchronous belt transmission assembly. The synchronous belt transmission assembly can also be replaced by a gear transmission assembly. The power of the motor is transmitted to the air deflector body 231 through the synchronous belt transmission assembly, thereby achieving the purpose of driving the air deflector body 231 to rotate.

[0146] To facilitate installation, the air deflector body 231 can be rotatably set on a lifting frame 2311, the lifting frame 2311 is connected to the movable driving element, and the rotating driving element is set on the lifting frame 2311 and connected to the movable part, thereby driving the air deflector body 231 to rotate relative to the lifting frame 2311, that is, driving the air deflector body 231 to rotate relative to the shell 21, thereby adjusting the air outlet direction of the air outlet 311.

[0147] Furthermore, the air guide plate body 231 can block another air outlet 311 under the driving of the rotating driving element, such as Figure 11 As shown, when the air guide plate body 231 rotates to a vertical position, the air guide plate body 231 closes the air outlet 311 on the right side.

[0148] Furthermore, the air guide plate body 231 abuts against the active node 33 in the air duct structure 3 to form a baffle that closes the air outlet 311, thereby closing the air outlet of the right air outlet 311 and achieving vertical downward air outlet of the lower air outlet 311.

[0149] See Figures 13 to 15 In a possible embodiment, further, in an embodiment in which a group of movable air duct wall components 32 are respectively provided corresponding to the bottom air outlet 311 and the side air outlet 311, the air guide plate body 231 can also be attached to the movable air duct wall components 32 provided corresponding to the bottom air outlet 311 to close the bottom air outlet 311.

[0150] When the bottom air outlet 311 is kept horizontal to close a portion of the opening of the bottom air outlet 311 , the movable air duct wall assembly 32 corresponding to the bottom air outlet 311 can be independently raised and lowered to achieve horizontal air outlet.

[0151] In this embodiment, the air outlet system 2 may be a system used only for air outlet, or an air outlet system 2 that can be used for heating and / or cooling.

[0152] The air outlet system 2 of this embodiment adopts an improved air duct structure 3, which can realize flexible allocation of airflow and adjust the opening of the air outlet 311. In conjunction with the air guide plate assembly 23 and the annular air outlet structure 24 arranged at different air outlets 311, it further realizes diversified air outlet modes, such as sweeping air, fixed-direction inclined air outlet with adjustable angle, and annular air outlet, etc., to adapt to different usage requirements.

[0153] It should be noted that, in the figure, P and Q indicate the direction of the inlet air flow and the direction of the outlet air flow, respectively.

[0154] Example 9

[0155] See Figure 1 、 Figures 10-12 、 Figures 13-15 The present invention also discloses an air conditioner 1, which includes a heat exchanger 11 and any one of the air outlet systems 2 disclosed in Example 8. The heat exchanger 11 is arranged in a shell 21 of the air outlet system 2 and is located in the air outlet flow channel 212 of the air outlet system 2. It is used to perform heat exchange on the air flow, heat or cool the air entering from the air inlet flow channel 211, and discharge it from the air outlet flow channel 212 to achieve a heating or cooling process.

[0156] The air conditioner 1 of this embodiment adopts the air outlet system 2 of embodiment 6. In the heating or cooling mode, it can realize a variety of air outlet modes according to actual application needs, such as Figure 1 、 Figure 14 The lower air outlet 311 shown in the figure discharges air and annular air, as shown in the figure Figure 10 、 Figure 15 The figure shows only the annular air outlet. Figure 11 、 Figure 13 The lower air outlet 311 shown discharges air vertically, or the lower fixed-angle air discharge and sweeping air are controlled only by the air guide plate assembly 23, making the user's use more comfortable and meeting more diverse usage needs.

[0157] The air conditioner 1 further includes a heat-insulating layer 12 fixedly disposed on the central panel 242 and a display assembly 13 fixed to the central panel 242 .

[0158] The insulation layer 12 is used to insulate the central panel 242 and reduce condensation. The display component 13 mainly includes a display screen and a circuit board, which is used to display various parameters of the air conditioner 1, such as temperature, humidity, etc.

[0159] It should be noted that, in the figure, P and Q indicate the direction of the inlet air flow and the direction of the outlet air flow, respectively.

[0160] The technical means disclosed in the solutions of the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An air duct structure, used in an air conditioner, comprising a housing and an annular air outlet structure, wherein the housing is provided with the air duct structure, characterized in that: The air duct structure includes: A fixed air duct wall having at least one air outlet disposed thereon; and A movable air duct wall assembly, at least one of which is provided corresponding to the air outlet, wherein one group of the movable air duct wall assemblies is provided on one side of the air outlet corresponding to the annular air outlet structure; The movable air duct wall assembly includes a driving device and a movable panel, wherein the movable panel is movably connected to the fixed air duct wall to form an air guide inner wall, and the driving device is connected to the movable panel and drives at least a portion of the movable panel to swing relative to the fixed air duct wall to adjust the inclination angle of the air guide inner wall and adjust the opening value of the corresponding air outlet; The movable panel is a telescopic panel, and the driving device is connected to the telescopic panel to drive the telescopic panel to swing relative to the fixed air duct wall and drive the telescopic panel to extend and retract; The air outlet is arranged on the side of the fixed air duct wall, the telescopic panel includes a flexible roller curtain, the driving device includes a winding shaft assembly connected to the flexible roller curtain and used to roll up the flexible roller curtain, and a counterweight rod is also provided between the two ends of the flexible roller curtain. The counterweight rod is movably arranged relative to the fixed air duct wall in a vertical direction or in a direction at an inclination angle to the vertical direction, and the counterweight rod is in contact with the surface of the flexible roller curtain.

2. An air duct structure, used in an air conditioner, comprising a housing and an annular air outlet structure, wherein the housing is provided with the air duct structure, characterized in that: The air duct structure includes: A fixed air duct wall having at least one air outlet disposed thereon; and A movable air duct wall assembly, at least one of which is provided corresponding to the air outlet, wherein one group of the movable air duct wall assemblies is provided on one side of the air outlet corresponding to the annular air outlet structure; The movable air duct wall assembly includes a driving device and a movable panel, wherein the movable panel is movably connected to the fixed air duct wall to form an air guide inner wall, and the driving device is connected to the movable panel and drives at least a portion of the movable panel to swing relative to the fixed air duct wall to adjust the inclination angle of the air guide inner wall and adjust the opening value of the corresponding air outlet; The movable panel is a telescopic panel, and the driving device is connected to the telescopic panel to drive the telescopic panel to swing relative to the fixed air duct wall and drive the telescopic panel to extend and retract; The telescopic panel is provided with an active node at one end thereof or between both ends thereof, and the driving device is connected to the active node and drives the active node to move; The telescopic panel includes a flexible rolling curtain, and the driving device includes a winding shaft assembly and a movable driving assembly. The winding shaft assembly is connected to the flexible rolling curtain and is used to roll up the flexible rolling curtain. The movable node is a movable rod arranged between the two ends of the flexible rolling curtain. The movable driving assembly is connected to the movable rod and drives the movable rod to move.

3. An air duct structure, used in an air conditioner, comprising a housing and an annular air outlet structure, wherein the housing is provided with the air duct structure, characterized in that: The air duct structure includes: A fixed air duct wall having at least one air outlet disposed thereon; and A movable air duct wall assembly, at least one of which is provided corresponding to the air outlet, wherein one group of the movable air duct wall assemblies is provided on one side of the air outlet corresponding to the annular air outlet structure; The movable air duct wall assembly includes a driving device and a movable panel, wherein the movable panel is movably connected to the fixed air duct wall to form an air guide inner wall, and the driving device is connected to the movable panel and drives at least a portion of the movable panel to swing relative to the fixed air duct wall to adjust the inclination angle of the air guide inner wall and adjust the opening value of the corresponding air outlet; The movable panel is a telescopic panel, and the driving device is connected to the telescopic panel to drive the telescopic panel to swing relative to the fixed air duct wall and drive the telescopic panel to extend and retract; The telescopic panel is provided with an active node at one end thereof or between both ends thereof, and the driving device is connected to the active node and drives the active node to move; The telescopic panel includes a flexible rolling curtain, and the driving device includes a winding shaft assembly and a mobile driving assembly. The winding shaft assembly is connected to the flexible rolling curtain and is used to roll up the flexible rolling curtain. One end of the flexible rolling curtain is connected to the winding shaft assembly, and the other end is provided with the active node. The mobile driving assembly is connected to the active node and drives the active node to move.

4. An air duct structure, used in an air conditioner, comprising a housing and an annular air outlet structure, wherein the housing is provided with the air duct structure, characterized in that: The air duct structure includes: A fixed air duct wall having at least one air outlet disposed thereon; and A movable air duct wall assembly, at least one of which is provided corresponding to the air outlet, wherein one group of the movable air duct wall assemblies is provided on one side of the air outlet corresponding to the annular air outlet structure; The movable air duct wall assembly includes a driving device and a movable panel, wherein the movable panel is movably connected to the fixed air duct wall to form an air guide inner wall, and the driving device is connected to the movable panel and drives at least a portion of the movable panel to swing relative to the fixed air duct wall to adjust the inclination angle of the air guide inner wall and adjust the opening value of the corresponding air outlet; The movable panel is a telescopic panel, and the driving device is connected to the telescopic panel to drive the telescopic panel to swing relative to the fixed air duct wall and drive the telescopic panel to extend and retract; The telescopic panel is provided with an active node at one end thereof or between both ends thereof, and the driving device is connected to the active node and drives the active node to move; The telescopic panel is a telescopic plate assembly, which includes a fixed plate and a movable plate. The movable plate moves relative to the fixed plate to telescope, wherein one of the fixed plate and the movable plate is hinged to the fixed air duct wall, and the movable node is provided on the other. The driving device includes a mobile driving assembly, which is connected to the movable node and drives the movable node to move.

5. The air duct structure according to any one of claims 2 to 4, characterized in that: The mobile driving component is a driving telescopic plate, wherein the driving telescopic plate includes a fixed end and a telescopic end that is telescopic relative to the fixed end, the fixed end is connected to the fixed air duct wall, and the telescopic end is connected to the active node.

6. The air duct structure according to any one of claims 2 to 4, characterized in that: The mobile drive assembly includes a drive motor and a connecting rod mechanism, wherein the connecting rod mechanism includes a crank and a connecting rod, the drive motor is connected to the crank and drives it to rotate, one end of the connecting rod is hinged to the crank, and the other end is hinged to the active node.

7. The air duct structure according to any one of claims 1 to 4, characterized in that: The fixed air duct wall includes two first fixed walls and a second fixed wall that are opposite and spaced apart. The movable air duct wall components are arranged in two groups, one group of the movable air duct wall components is connected to the first fixed wall to form a first air guide wall, and the other group of the movable air duct wall components is connected to the second fixed wall to form a second air guide wall. The first air guide wall and the second air guide wall form an air duct for air flow.

8. An air outlet system, characterized in that: include: The air duct structure and fan described in any one of claims 1-7, wherein the shell is provided with an air inlet duct and an air outlet duct, the fan is arranged between the air inlet duct and the air outlet duct, and the air duct structure is arranged in the air outlet duct.

9. The air outlet system according to claim 8, characterized in that: At least two air outlets are provided on the shell, and the air outlets are communicated with the air outlet flow channel. The air outlet system also includes an air guide plate assembly, and the air guide plate assembly and the annular air outlet structure are respectively connected to different air outlets.

10. The air outlet system according to claim 9, characterized in that: The air guide plate assembly and the annular air outlet structure are arranged on different sides of the shell.

11. An air conditioner comprising a heat exchanger, characterized in that: It also includes the air outlet system according to any one of claims 8 to 10, wherein the heat exchanger is arranged in a shell of the air outlet system and located in the air inlet channel.

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