Air conditioner

Abstract

The air conditioner comprises an outer shell, an air duct component and an air passing frame, the outer shell comprises a front shell and a rear shell, and the front shell is provided with an air outlet and a ventilation opening; the air duct component is arranged in the shell and defines an air duct, and a wind wheel is arranged in the air duct; the air passing frame is arranged between the air duct component and the front shell and defines an air passing channel, one end of the air passing channel communicates with the outer space of the shell through the ventilation opening, and the other end of the air passing channel communicates with the air duct. According to the air conditioner, the air passing channel with a certain size is defined by the air passing frame, when the air passing channel serves as an air inducing channel, the contact area of airflow and the air passing frame can be increased, and therefore condensation generated by the airflow can be attached to the channel wall of the air passing channel, the phenomenon that the condensation is introduced into an air channel can be reduced, and the air quality of the air conditioner is improved. Therefore, the comfort level of the air outlet airflow can be improved.

Description

Technical Field

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

[0002] In related technologies, the air outlet temperature of air conditioners can only be controlled by adjusting the temperature of the heat exchanger. This results in poor comfort when directly blowing cool or hot air, which is quite different from natural wind. Furthermore, the indoor air becomes relatively dry after passing through the heat exchanger for cooling. Prolonged cooling leads to low indoor humidity and poor comfort. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide an air conditioner whose airflow provides a more comfortable temperature and humidity, thus improving the user experience.

[0004] An air conditioner according to an embodiment of the present invention includes: a housing, the housing including a front housing and a rear housing, the front housing having an air outlet and a vent, the vent being located on one side of the air outlet; a duct component, the duct component being disposed inside the housing and connected to the front housing, the duct component defining an air outlet duct, the duct having a fan wheel; and a wind-passing frame, the wind-passing frame being disposed between the duct component and the front housing, the wind-passing frame itself defining an air-passing channel, one end of the air-passing channel communicating with the external space of the housing through the vent, and the other end of the air-passing channel communicating with the duct.

[0005] According to the embodiment of this utility model, the air conditioner, by setting an air passage, can form a local negative pressure zone in the air passage when high-speed air flows out of the air outlet. This allows air from outside the casing to be introduced into the air passage for mixing before being delivered out of the air outlet. This improves the mixing effect of the airflow to a certain extent, effectively fine-tuning the temperature and humidity of the airflow at the air outlet, making the temperature and humidity of the airflow more comfortable and improving the user experience. Furthermore, by using the air passage frame itself to define an air passage of a certain size, when the air passage acts as an air intake channel, the contact area between the airflow and the air passage frame can be increased. This allows condensation generated by the airflow to adhere to the passage wall, reducing the phenomenon of condensation being introduced into the air passage, thereby further improving the comfort of the airflow.

[0006] According to some embodiments of the present invention, the two ends of the air passage have a first air passage and a second air passage, respectively, and the second air passage is disposed closer to the ventilation opening than the first air passage; wherein, the distance between the first air passage and the second air passage is 40mm-80mm; and / or, the width of the first air passage is L1, the width of the second air passage is L2, L2≤L1; and / or, 10mm≤L1≤20mm, 10mm≤L2≤20mm.

[0007] According to some embodiments of the present invention, the air duct component includes: a wind turbine housing, the wind turbine housing defining a portion of the air duct, the wind turbine being disposed within the wind turbine housing; an air outlet frame, the air outlet frame connecting the wind turbine housing and the front housing and defining another portion of the air duct, the air passage frame being located on at least one side of the air outlet frame.

[0008] In some embodiments, at least one air passage frame is a first air passage frame, which is disposed on one side of the wall where the air outlet frame is connected to the volute of the impeller housing; wherein, the first air passage frame defines a first air passage, which extends from back to front away from the air duct in the cross-section of the air conditioner and communicates with the air duct through an air passage cavity.

[0009] In some examples, in the cross-section of the air conditioner, the angle between the extending direction of the channel wall of the first air passage and the plane containing the end of the first air passage away from the external space is α1, where 50°≤α1≤70°.

[0010] In some examples, the housing is further provided with an air inlet, and a heat exchanger is provided between the air inlet and the impeller. A sealing side plate is connected between the heat exchanger and the impeller housing. The air outlet frame, the sealing side plate, the impeller housing and the air passage frame define the air passage cavity, the air passage cavity is connected to one end of the air passage channel, and the air outlet frame has a connecting opening that connects the air passage cavity and the air duct.

[0011] In some embodiments, at least one air passage frame is a second air passage frame, which is connected between the volute housing opposite to the volute tongue and the air outlet frame of the impeller housing; wherein the second air passage frame defines a second air passage, which extends from back to front in a direction away from the air passage.

[0012] In some embodiments, the second air duct frame has a first sidewall and a second sidewall disposed opposite to each other. The first sidewall is connected to a volute of the impeller housing that is disposed opposite to the volute tongue, and the second sidewall is connected to the air outlet frame. One end opening of the second air duct is located between the first sidewall and the second sidewall. In the cross-section of the air conditioner, the angle between the channel wall of the second air duct near the first sidewall and the first sidewall is α2, where 90°≤α2≤120°; and / or, in the cross-section of the air conditioner... The angle between the wall where the volute of the impeller housing is located and the first side wall is α3, 90°≤α3≤140°; and / or, in the cross-section of the air conditioner, the angle between the channel wall of the second air passage near the second side wall and the second side wall is α4, 100°≤α4≤150°; and / or, the angle between the wall where the volute of the impeller housing is located and the first side wall is α3, and the angle between the channel wall of the second air passage near the second side wall and the second side wall is α4, 90°≤α3≤α4.

[0013] According to some embodiments of the present invention, the air duct includes a main channel, a first branch channel, and a second branch channel; the air outlet is at least two, namely a first air outlet and a second air outlet; the first branch channel connects the first air outlet and the main channel; and the second branch channel connects the second air outlet and the main channel; wherein, the air passage includes a first air passage, which is located on the side of the first branch channel away from the second branch channel and is connected to the first branch channel; and / or, the air passage includes a second air passage, which is located on the side of the second branch channel away from the first branch channel and is connected to the second branch channel or the main channel.

[0014] In some embodiments, the air conditioner further includes a louver assembly, which includes a connecting rod and a plurality of louvers. The connecting rod is disposed on the air outlet frame and connected to the plurality of louvers. A portion of the plurality of louvers extends into the first branch channel and another portion extends into the second branch channel. The plurality of louvers are integrally formed with the connecting rod, or the plurality of louvers are rotatably disposed on the connecting rod.

[0015] According to some embodiments of the present invention, the air passage extends in the height direction of the front shell, and a plurality of air guide plates are provided in the air passage. The plurality of air guide plates are arranged in the height direction of the front shell, and the air guide plates gradually extend upward from the inside to the outside.

[0016] In some embodiments, the angle between the air guide plate and the horizontal plane is 30°-45°; and / or, a plurality of the air guide plates are integrally formed with the air passage frame.

[0017] According to some embodiments of this utility model, the ventilation opening is provided with a switch door for opening and closing the ventilation opening.

[0018] According to some embodiments of the present invention, it further includes: an air guiding assembly, the air guiding assembly further including a movable air guiding member for covering or opening the air outlet, wherein when the air guiding member opens the air outlet, the air passage forms an air intake passage, and when the air guiding member covers the air outlet, the air passage forms an exhaust passage.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a structural schematic diagram of an air conditioner according to an embodiment of the present utility model;

[0022] Figure 2 yes Figure 1 The exploded view of the air conditioner shown in the figure;

[0023] Figure 3 yes Figure 1 The front view of the air conditioner shown;

[0024] Figure 4 It is along Figure 3 Structural cross-sectional view of line AA in the middle;

[0025] Figure 5 yes Figure 4 The diagram shows the parameters of the air conditioner.

[0026] Figure 6 yes Figure 3 The left view of the air conditioner shown;

[0027] Figure 7 yes Figure 3 The right view of the air conditioner shown;

[0028] Figure 8 yes Figure 2 The diagram shows the structure of the air outlet frame, the first air passage frame, and the second air passage frame of the air conditioner.

[0029] Figure 9 yes Figure 8 A schematic diagram of the structure of the first air-passing frame shown;

[0030] Figure 10 yes Figure 9 An enlarged view of section B shown;

[0031] Figure 11 yes Figure 8 A schematic diagram of the structure of the second air-passing frame is shown below;

[0032] Figure 12 yes Figure 11 An enlarged view of section C shown in the diagram;

[0033] Figure label:

[0034] Air conditioner 100,

[0035] Outer shell 10, front shell 1001, rear shell 1004, chassis 1005, top cover 1006.

[0036] Air duct 101, main channel 1011, first branch channel 1012, second branch channel 1013

[0037] Air outlet 102, first air outlet 1021, second air outlet 1022

[0038] Air passage 103, first air outlet 1031, second air outlet 1032, first air passage 1033, second air passage 1034, connecting opening 104, ventilation opening 105, air passage cavity 106, air inlet 108.

[0039] Air duct component 11,

[0040] 111 wind turbine housing, 1111 volute tongue, 1112 volute casing, 1113 sealing side plate, 112 air outlet frame.

[0041] Air passage frame 12, first air passage frame 121, second air passage frame 122, first side wall 1221, second side wall 1222.

[0042] Air guide plate 13,

[0043] Air guide assembly 20, air guide component 21, second drive component 22,

[0044] Switch assembly 30, switch door 31, first drive component 32

[0045] 40, 41, 42, 40, 41, 42

[0046] Heat exchanger 50, first heat exchange section 51, second heat exchange section 52, impeller 60, heating element 70. Detailed Implementation

[0047] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0048] The following is for reference. Figures 1-12 This invention describes an air conditioner 100 according to an embodiment of the present invention.

[0049] like Figures 1-4 As shown, the air conditioner 100 according to an embodiment of the present invention includes a housing 10 and an air duct component 11. The housing 10 includes a front housing 1001 and a rear housing 1004, and the rear housing 1004 can be connected to the rear side of the front housing 1001. The front housing 1001 is provided with an air outlet 102 and a ventilation opening 105. The number of air outlets 102 can be one or more, and the number of ventilation openings 105 can also be one or more. The ventilation opening 105 is located on one side of the air outlet 102. The air duct component 11 is disposed inside the housing 10 and connected to the front housing 1001. The air duct component 11 defines an air outlet duct 101, and a fan wheel 60 is provided inside the air duct 101.

[0050] Furthermore, the air conditioner 100 also includes an air duct frame 12, which is located between the air duct component 11 and the front casing 1001. The air duct frame 12 defines an air passage 103. One end of the air passage 103 communicates with the external space of the casing 10 through a vent 105, and the other end of the air passage 103 communicates with the air duct 101. The air duct frame 12 and the air duct component 11 can be molded separately. During installation, the air duct frame 12 can be pre-installed on the air duct component 11, resulting in a simple structure and convenient assembly and disassembly.

[0051] When the air outlet 102 is open and the air conditioner 100 is in cooling mode, high-speed air flows out of the air outlet 102, which can form a local negative pressure zone in the air duct 101. At this time, the air passage 103 can be used as an air intake passage. The warmer air outside the outer casing 10 can enter the air passage 103 through the vent 105, be introduced into the air duct 101 through the air passage 103, mix with the cooler air in the air duct 101, and then be sent out from the air outlet 102, and so on.

[0052] Therefore, by introducing external air, on the one hand, the outlet temperature of the air outlet 102 can be gradually reduced to avoid discomfort caused by sudden changes in outlet temperature; on the other hand, the hot air blown out by the air outlet 102 will not be too dry, but will have higher humidity, making the airflow softer and more comfortable.

[0053] When the air outlet 102 is open and the air conditioner 100 is in heating mode, high-speed air flows out of the air outlet 102, which can form a local negative pressure zone in the air duct 101. At this time, the air passage 103 can be used as an air intake passage. The cooler air outside the outer casing 10 can enter the air passage 103 from the vent 105, be introduced into the air duct 101 through the air passage 103, mix with the warmer air in the air duct 101, and then be sent out from the air outlet 102, and so on.

[0054] Therefore, by introducing external air, on the one hand, the outlet temperature of the air outlet 102 can be gradually increased to avoid discomfort caused by sudden changes in outlet temperature, and on the other hand, the humidity of the cool air blown out by the air outlet 102 is moderate.

[0055] When the air outlet 102 is covered, a high-pressure zone can be formed in the air duct 101. At this time, the air passage 103 can be used as an exhaust passage, allowing at least a portion of the airflow in the air duct 101 to enter the air passage 103, and finally the air outlet 105 to exhaust it to the outside of the outer casing 10.

[0056] According to the embodiment of the present utility model, the air conditioner 100, by setting the air passage 103, when high-speed flowing gas flows out of the air outlet 102, a local negative pressure zone can be formed in the air duct 101, so that the air outside the outer shell 10 can be introduced into the air duct 101 through the air passage 103 for mixing, and finally sent out from the air outlet 102. This improves the mixing effect of the airflow to a certain extent, effectively fine-tunes the airflow temperature and humidity at the air outlet 102, making the temperature and humidity of the airflow more comfortable and improving the user experience.

[0057] Furthermore, by using the air-passing frame 12 to define an air-passing channel 103 of a certain size, when the air-passing channel 103 is used as an air-guiding channel, the contact area between the airflow and the air-passing frame 12 can be increased, so that the condensation generated by the airflow can adhere to the channel wall of the air-passing channel 103, which can reduce the phenomenon of introducing condensation into the air duct 101, thereby further improving the comfort of the airflow.

[0058] There is one air passage 103, which can be located on one side of the air duct 101.

[0059] Of course, the number of air passages 103 can be at least two, including a first air passage 1033 and a second air passage 1034, that is, the front shell 1001 has a first air passage 1033 and a second air passage 1034. In the description of this utility model, "first feature" and "second feature" can include more than one of these features. One end of the first air passage 1033 and one end of the second air passage 1034 are both connected to the external space of the front shell 1001, and the other end of the first air passage 1033 and the other end of the second air passage 1034 are both connected to the air duct 101.

[0060] like Figure 4 and Figure 5 As shown, according to some embodiments of the present invention, the two ends of the air passage 103 are respectively provided with a first air passage 1031 and a second air passage 1032. The second air passage 1032 is located closer to the ventilation opening 105 than the first air passage 1031. That is, the air passage 103 is connected to the air duct 101 through the first air passage 1031, and the air passage 103 is connected to the ventilation opening 105 through the second air passage 1032.

[0061] In some embodiments, the distance between the first air inlet 1031 and the second air inlet 1032 is 40mm-80mm. That is, the straight-line distance between the two ends of the air passage 103 is 40mm-80mm.

[0062] Specifically, in Figure 4 and Figure 5 In the illustrated embodiment, at least one air passage 103 is a first air passage 1033, and the distance M1 between the first air passage 1031 and the second air passage 1032 of the first air passage 1033 can be 40mm, 50mm, 60mm, 70mm, 80mm, etc., and / or, at least one air passage 103 is a second air passage 1034, and the distance M2 between the first air passage 1031 and the second air passage 1032 of the second air passage 1034 can be 40mm, 50mm, 60mm, 70mm, 80mm, etc.

[0063] In the above technical solution, by limiting the structural dimensions of the air passage 103, the contact area between the airflow and the air passage frame 12 can be increased, so that the condensation generated by the airflow can adhere to the passage wall of the air passage 103, effectively reducing the phenomenon of introducing condensation into the air duct 101.

[0064] like Figure 4 and Figure 5As shown, in some other embodiments, the width of the first air vent 1031 is L1, and the width of the second air vent 1032 is L2, where L2 ≤ L1. Here, the width L1 of the first air vent 1031 refers to the projected size of the first air vent 1031 in a plane perpendicular to the height direction of the air conditioner 100; similarly, the width L2 of the second air vent 1032 refers to the projected size of the second air vent 1032 in a plane perpendicular to the height direction of the air conditioner 100.

[0065] For example, the width L1 of the first air outlet 1031 can be equal to the width L2 of the second air outlet 1032, and the width of the air passage 103 can be equal at any position in its extension direction; or, for example, the width L1 of the first air outlet 1031 is greater than the width L2 of the second air outlet 1032, and the width of the air passage 103 gradually decreases from the first air outlet 1031 to the second air outlet 1032 in its extension direction; or, for example, a portion of the air passage 103 has equal width, and the width L1 of the first air outlet 1031 is greater than the width L2 of the second air outlet 1032. By limiting the widths of the first air outlet 1031 and the second air outlet 1032, the air intake effect of the air passage 103 can be guaranteed.

[0066] In some embodiments, the width L1 of the first air outlet 1031 satisfies the condition: 10mm ≤ L1 ≤ 20mm. For example, the width L1 of the first air outlet 1031 can be 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, etc. The width L2 of the second air outlet 1032 satisfies the condition: 10mm ≤ L2 ≤ 20mm. For example, the width L2 of the second air outlet 1032 can be 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, etc. This configuration ensures the airflow effect of the air passage 103.

[0067] In some embodiments, the width L1 of the first air vent 1031 and the width L2 of the second air vent 1032 satisfy the condition: 10mm≤L2≤L1≤20mm. This setting can further ensure the air-guiding effect of the air passage 103 and further reduce the phenomenon of condensation being introduced into the air passage 101.

[0068] like Figure 4 As shown, according to some embodiments of the present invention, the air duct component 11 includes a fan housing 111 and an air outlet frame 112. The fan housing 111 defines a portion of the air outlet duct 101. The fan 60 is disposed inside the fan housing 111. The air outlet frame 112 is connected between the fan housing 111 and the front shell 1001. The air outlet frame 112 defines another portion of the air outlet duct 101. The air passage frame 12 is located on at least one side of the air outlet frame 112.

[0069] In the above technical solution, by setting the air duct component 11 to include a fan housing 111 and an air outlet frame 112, the fan housing 111 and the air outlet frame 112 can be formed separately. This setting simplifies the structure of the air duct component 11, reduces the processing difficulty of the air duct component 11, and helps to improve production efficiency. Furthermore, by setting the air passage frame 12 on at least one side of the air outlet frame 112, the air passage 103 defined by the air outlet frame 112 is located on at least one side of the air duct 101, thereby achieving the effect of air intake or exhaust on at least one side of the air outlet 102.

[0070] In some embodiments, at least one air passage frame 12 is a first air passage frame 121, which is located on one side of the wall where the air outlet frame 112 is connected to the volute tongue 1111 of the impeller housing 111; the first air passage frame 121 defines a first air passage 1033, which extends from back to front away from the air duct 101 in the cross-section of the air conditioner 100 and is connected to the air duct 101 through the air passage cavity 106. The first air passage 1033 can be straight or curved.

[0071] Specifically, such as Figure 4 and Figure 5 As shown, the impeller housing 111 includes a volute tongue 1111 and a volute shell 1112. The volute tongue 1111 is located on the left side of the volute shell 1112. A first air passage frame 121 can be connected between the left side of the air outlet frame 112 and the front housing 1001, and the first air passage frame 121 is located on the left side of the volute tongue 1111. The first air passage 1033 defined by the first air passage frame 121 gradually extends to the left from back to front. When the first air passage 1033 serves as an air intake passage, it can create an air intake effect on the left side of the air outlet 102. When the first air passage 1033 serves as an exhaust passage, it can create an exhaust effect on the left side of the air outlet 102.

[0072] In the above technical solution, by setting the first air passage frame 121, the first air passage channel 1033 can be defined by the first air passage frame 121 itself. When the first air passage channel 1033 serves as an air intake channel, the contact area between the airflow and the first air passage frame 121 can be increased, so that the condensation generated by the airflow can adhere to the channel wall of the first air passage channel 1033. Since there is an air passage cavity 106 between the first air passage channel 1033 and the air duct 101, the phenomenon of introducing condensation into the air duct 101 can be further reduced.

[0073] like Figure 5As shown, in some examples, in the cross-section of the air conditioner 100, the angle between the extending direction of the channel wall of the first air passage 1033 and the plane containing the end of the first air passage 1033 away from the external space is α1, where 50°≤α1≤70°. That is, in the cross-section of the air conditioner 100, the angle between the channel wall of the first air passage 1033 and the plane containing the first air outlet 1031 of the first air passage 1033 is α1. For example, α1 can be 50°, 55°, 60°, 65°, 70°, etc.

[0074] With this configuration, when the first air passage 1033 is used as an air intake passage, it can avoid obstacles and ensure the air intake effect of the first air passage 1033 by drawing air from the side of the front shell 1001. When the first air passage 1033 is used as an exhaust passage, it can exhaust air to the side and front of the front shell 1001, thereby increasing the air outlet range and improving the user experience.

[0075] like Figure 4 and Figure 5 As shown, in some examples, the outer casing 10 is also provided with an air inlet 108. A heat exchanger 50 is provided between the air inlet 108 and the impeller 60. A sealing side plate 1113 is connected between the heat exchanger 50 and the impeller casing 111. An air passage cavity 106 is defined between the air outlet frame 112, the sealing side plate 1113, the impeller casing 111, and the air passage frame 12. The air passage cavity 106 is connected to one end of the air passage channel 103. The air outlet frame 112 has a connecting port 104, which connects the air passage cavity 106 and the air duct 101.

[0076] Since the sealing side plate 1113, the air outlet frame 112, the impeller housing 111 and the air passage frame 12 are set independently, the molding process is simpler. By combining multiple relatively simple structures to form a relatively complex structure and the air passage cavity 106, the manufacturing difficulty of the air conditioner 100 can be reduced, which is conducive to reducing costs and improving production efficiency.

[0077] Furthermore, the air passage cavity 106 defined by the sealing side plate 1113, the air outlet frame 112, the impeller housing 111, and the air passage frame 12 is relatively large. Even if the condensation on the channel wall of the first air passage 1033 enters the air passage cavity 106, it will fall into the water receiving pan below the heat exchanger 50 under the action of gravity, rather than entering the air duct 101. Therefore, it can help reduce the phenomenon of condensation being introduced into the air duct 101.

[0078] like Figure 4 and Figure 5As shown, in some embodiments, at least one air passage frame 12 is a second air passage frame 122, which is connected between the volute 1112 and the air outlet frame 112 of the impeller housing 111, which are disposed opposite to the volute tongue 1111. The second air passage frame 122 defines a second air passage 1034, which extends from back to front in a direction away from the air passage 101. The second air passage 1034 can be straight or curved.

[0079] Specifically, the impeller housing 111 includes a volute tongue 1111 and a volute shell 1112. The volute tongue 1111 is located on the left side of the volute shell 1112. The second air passage frame 122 is located on the right side of the outlet frame 112 and between the front housing 1001. The first air passage frame 121 connects the outlet frame 112 and the volute shell 1112. The second air passage 1034 defined by the second air passage frame 122 gradually extends to the right from back to front. When the second air passage 1034 serves as an air intake passage, it can create an air intake effect on the right side of the outlet 102. When the second air passage 1034 serves as an exhaust passage, it can create an exhaust effect on the right side of the outlet 102.

[0080] In the above technical solution, by setting a second air passage frame 122, the second air passage channel 1034 can be defined by the second air passage frame 122 itself. When the second air passage channel 1034 is used as an air intake channel, the contact area between the airflow and the second air passage frame 122 can be increased, so that the condensation generated by the airflow can adhere to the channel wall of the second air passage channel 1034, reducing the phenomenon of introducing condensation into the air duct 101.

[0081] In addition, connecting the second air duct frame 122 between the front housing 1001, the volute 1112 of the impeller housing 111, and the air outlet frame 112 can ensure the installation reliability and stability of the second air duct frame 122, and can also make the internal structure of the air conditioner 100 more compact.

[0082] like Figure 5 As shown, in some embodiments, the second air passage frame 122 has a first sidewall 1221 and a second sidewall 1222 disposed opposite to each other. The first sidewall 1221 is connected to the volute 1112 of the impeller housing 111 disposed opposite to the volute tongue 1111. The second sidewall 1222 is connected to the air outlet frame 112. One end opening of the second air passage 1034 is located between the first sidewall 1221 and the second sidewall 1222. That is, the first air passage 1031 of the second air passage 1034 is located between the first sidewall 1221 and the second sidewall 1222. The first sidewall 1221 and the second sidewall 1222 form part of the air passage 101 wall.

[0083] like Figure 5As shown, in some examples, in the cross-section of the air conditioner 100, the angle between the channel wall of the second air passage 1034 near the first side wall 1221 and the first side wall 1221 is α2, where 90°≤α2≤120°. For example, the angle α2 between the channel wall of the second air passage 1034 near the first side wall 1221 and the first side wall 1221 can be 90°, 100°, 110°, 120°, etc.

[0084] Specifically, when the channel wall of the second air passage 1034 near the first side wall 1221 and the first side wall 1221 are both straight walls, the included angle α2 between the channel wall of the second air passage 1034 near the first side wall 1221 and the first side wall 1221 can refer to the included angle between the straight wall and the first side wall 1221.

[0085] When one of the passage wall of the second air passage 1034 near the first side wall 1221 is an arc-shaped wall and the other is a straight wall, the included angle α2 between the passage wall of the second air passage 1034 near the first side wall 1221 and the first side wall 1221 can refer to the included angle between the tangent of the arc-shaped wall at the junction of the arc-shaped wall and the straight wall and the straight wall.

[0086] When both the first sidewall 1221 and the passage wall of the second air passage 1034 near the first sidewall 1221 are arc-shaped walls, the included angle α2 between the passage wall of the second air passage 1034 near the first sidewall 1221 and the first sidewall 1221 can refer to the included angle between the tangents of the two arc-shaped walls at the junction.

[0087] In the above technical solution, by limiting the included angle α2 between the second air passage 1034 and the first side wall 1221 near the first side wall 1221 to meet the above conditions, when the second air passage 1034 is used as an air intake passage, the first side wall 1221 can block the airflow, so that the airflow in the second air passage 1034 can smoothly enter the air duct 101, thereby better achieving the air intake effect. When the second air passage 1034 is used as an exhaust passage, it can enable the second air passage 1034 to exhaust air to the side and front of the front shell 1001, thereby increasing the airflow range and improving the user experience.

[0088] like Figure 5As shown, in some examples, in the cross-section of the air conditioner 100, the angle between the wall containing the volute tongue 1111 of the impeller housing 111 and the first side wall 1221 is α3, where 90°≤α3≤140°. For example, the angle α3 between the wall containing the volute tongue 1111 of the impeller housing 111 and the first side wall 1221 can be 90°, 100°, 110°, 117°, 120°, 130°, 140°, etc.

[0089] Therefore, by limiting the angle α3 between the wall where the volute tongue 1111 of the impeller housing 111 is located and the first side wall 1221 to satisfy the above conditions, when the second air passage 1034 is used as an air intake passage, the airflow in the second air passage 1034 can avoid the wall where the volute tongue 1111 of the impeller housing 111 is located. That is, the wall where the volute tongue 1111 of the impeller housing 111 is located can be prevented from blocking the airflow discharged from the first air outlet 1031 of the second air passage 1034, thereby achieving a better air intake effect.

[0090] like Figure 5 As shown, in some examples, in the cross-section of the air conditioner 100, the angle between the channel wall of the second air passage 1034 near the second side wall 1222 and the second side wall 1222 is α4, where 100°≤α4≤150°. For example, the angle α4 between the channel wall of the second air passage 1034 near the second side wall 1222 and the second side wall 1222 can be 100°, 110°, 120°, 124°, 130°, 140°, or 150°.

[0091] Specifically, when both the channel wall of the second air passage 1034 near the second side wall 1222 and the second side wall 1222 are straight walls, the included angle α4 between the channel wall of the second air passage 1034 near the second side wall 1222 and the second side wall 1222 can refer to the included angle between the straight wall and the second side wall 1222; when one of the channel wall of the second air passage 1034 near the second side wall 1222 and the second side wall 1222 is an arc-shaped wall and the other is a straight wall, the second air passage 1034 near the second side wall 1222... The included angle α4 between the channel wall near the second side wall 1222 and the second side wall 1222 can refer to the angle between the tangent of the arc-shaped wall at the junction of the arc-shaped wall and the straight wall and the straight wall; when both the second side wall 1222 and the channel wall of the second air passage 1034 near the second side wall 1222 are arc-shaped walls, the included angle α4 between the channel wall of the second air passage 1034 near the second side wall 1222 and the second side wall 1222 can refer to the angle between the tangents of the two arc-shaped walls at the junction.

[0092] In the above technical solution, by limiting the included angle α4 between the channel wall of the second air passage 1034 near the second side wall 1222 and the second side wall 1222 to meet the above conditions, when the second air passage 1034 is used as an air intake passage, the second side wall 1222 can be prevented from blocking the airflow discharged from the first air intake 1031 of the second air passage 1034, thereby achieving a better air intake effect.

[0093] like Figure 5 As shown, in some examples, the angle between the wall containing the volute tongue 1111 of the impeller housing 111 and the first side wall 1221 is α3, and the angle between the channel wall of the second air passage 1034 near the second side wall 1222 and the second side wall 1222 is α4, where 90°≤α3≤α4. Here, α3 and α4 can be equal, or α4 can be greater than α3; for example, α4-α3 is greater than or equal to 10°, thus ensuring that the second air passage 1034 and the air duct 101 meet design requirements.

[0094] like Figure 4 and Figure 5 As shown, according to some embodiments of the present invention, the air duct 101 includes a main channel 1011, a first branch channel 1012 and a second branch channel 1013, and at least two air outlets 102, namely a first air outlet 1021 and a second air outlet 1022. The first branch channel 1012 connects the first air outlet 1021 and the main channel 1011, and the second branch channel 1013 connects the second air outlet 1022 and the main channel 1011.

[0095] In some embodiments, the air passage 103 includes a first air passage 1033, which is located on the side of the first branch passage 1012 away from the second branch passage 1013 and is connected to the first branch passage 1012.

[0096] In some other embodiments, the air passage 103 includes a second air passage 1034, which is located on the side of the second branch passage 1013 away from the first branch passage 1012 and is connected to the second branch passage 1013 or the main passage 1011.

[0097] In some other embodiments, the number of air passages 103 is at least two, namely a first air passage 1033 and a second air passage 1034. The first air passage 1033 is located on the side of the first branch passage 1012 away from the second branch passage 1013 and is connected to the first branch passage 1012. The second air passage 1034 is located on the side of the second branch passage 1013 away from the first branch passage 1012 and is connected to the second branch passage 1013 or the main passage 1011.

[0098] When the first air outlet 1021 and the second air outlet 1022 are open, air outside the housing 10 can enter the air duct 101 through the air passage 103 to mix with the airflow in the air duct 101, and finally be discharged from the first air outlet 1021 and the second air outlet 1022. In an embodiment where the air passage 103 includes a first air passage 1033, air outside the housing 10 can also enter the first air passage 1033 through the vent 105, thereby entering the first branch passage 1012 and mixing with the airflow in the first branch passage 1012; in an embodiment where the air passage 103 includes a second air passage 1034, air outside the housing 10 can also enter the second air passage 1034 through the vent 105, thereby entering the main passage 1011 or the second branch passage 1013 and mixing with the airflow in the main passage 1011 or the second branch passage 1013.

[0099] When the first air outlet 1021 and the second air outlet 1022 are covered, in an embodiment where the air passage 103 includes the first air passage 1033, at least a portion of the airflow in the first branch passage 1012 can be discharged to the outside of the outer casing 10 through the first air passage 1033; in an embodiment where the air passage 103 includes the second air passage 1034, at least a portion of the airflow in the main passage 1011 or the second branch passage 1013 can be discharged to the outside of the outer casing 10 through the second air passage 1034.

[0100] In the above technical solution, by setting a first air outlet 1021, a second air outlet 1022, and an air passage 103, multiple air outlets 102 can be used to output air. Furthermore, the air passage 103 can improve the mixing effect of the airflow in the first branch passage 1012, the second branch passage 1013, or the main passage 1011, effectively fine-tuning the airflow temperature and humidity at the first air outlet 1021 and the second air outlet 1022, making the temperature and humidity of the airflow more comfortable and improving the user experience.

[0101] like Figure 4 As shown, according to some embodiments of the present invention, the air conditioner 100 further includes a swivel assembly 40, which includes a connecting rod 42 and a plurality of swivel blades 41. The connecting rod 42 is disposed on the air outlet frame 112 and is connected to the plurality of swivel blades 41. A portion of the plurality of swivel blades 41 extends into the first branch channel 1012, and another portion of the plurality of swivel blades 41 extends into the second branch channel 1013, thereby achieving the air guiding effect.

[0102] Among them, multiple oscillating blades 41 and connecting rods 42 can be integrally formed, which can reduce abnormal noise caused by thermal expansion and contraction and improve user comfort.

[0103] Of course, multiple pendulum blades 41 can also be rotatably mounted on the connecting rod 42. When the connecting rod 42 moves, it can drive multiple pendulum blades 41 to swing up and down synchronously.

[0104] Therefore, the louver assembly 40 can adjust the airflow direction in the first branch channel 1012 and / or the second branch channel 1013 so that the airflow direction of the air outlet 102 meets the usage requirements.

[0105] like Figures 8-11 As shown, according to some embodiments of the present invention, the air passage 103 is located in the height direction of the front housing 1001 (e.g., Figure 8 Extending in the vertical direction shown, the air passage 103 is provided with multiple air guide plates 13, which are arranged in the height direction of the front shell 1001. The air guide plates 13 gradually extend upward from the inside to the outside.

[0106] When the air outlet 102 is covered and the air conditioner 100 is in cooling mode, the air passage 103 serves as an exhaust passage, and the multiple air guides 13 can guide the airflow, throwing the cooler airflow in the air passage 103 upwards. On the one hand, this can prevent the cooler airflow from blowing directly on the user, and on the other hand, the cooler airflow can achieve the effect of rapid cooling of the indoor space during the settling process.

[0107] In some embodiments, the angle between the air guide plate 13 and the horizontal plane is 30°-45°. For example, the angle between the air guide plate 13 and the horizontal plane can be 30°, 35°, 40°, 45°, etc. By limiting the angle between the air guide plate 13 and the horizontal plane to meet the above range, on the one hand, the air guide plate 13 can reduce the obstruction of airflow, and on the other hand, the air guide plate 13 can be used to throw the airflow upward, thereby achieving the effect of rapid cooling of the indoor space.

[0108] It should be noted that multiple air guide plates 13 can be positioned in the air passage 103 near the air duct 101. These air guide plates 13 can be integrally formed with the air passage frame 12, meaning the air passage frame 12 forms a grid structure inside the air passage 103. With the multiple air guide plates 13 fixed in place, the airflow within the air passage 103 is rectified, reducing noise caused by thermal expansion and contraction and improving user comfort. Alternatively, the multiple air guide plates 13 can be oscillating up and down within the air passage 103, allowing adjustment of the angle between the air guide plates 13 and the horizontal plane to regulate the airflow direction.

[0109] like Figure 2As shown in some embodiments of this utility model, a switch door 31 is provided at the vent 105, which is used to open and close the vent 105. When the air conditioner 100 is off, the switch door 31 can be controlled to close the vent 105 to prevent dust from entering the air duct frame 12 from the vent 105. When the air conditioner 100 is working, the switch door 31 can be controlled to open the vent 105, allowing the air duct frame 12 to pass air normally (intake or exhaust). Of course, when the air conditioner 100 is working, the vent 105 can also be closed, thereby disabling the air passage function of the air duct frame 12.

[0110] Therefore, by setting up a movable door 31, the air vent 105 can be opened and closed using the relatively simple and low-cost door 31, enabling the air conditioner 100 to achieve multiple air supply states, increasing the functionality of the air conditioner 100 and meeting different usage needs.

[0111] like Figure 2 As shown, in some embodiments, the air conditioner 100 may include a switch assembly 30, which includes a switch door 31 and a first drive component 32. The first drive component 32 can drive the switch door 31 to move, making the opening and closing control of the switch door 31 more convenient.

[0112] like Figure 2 As shown, according to some embodiments of the present invention, the air conditioner 100 further includes an air guide assembly 20, and the air guide assembly 20 further includes a movable air guide member 21. The air guide member 21 is used to cover or open the air outlet 102. When the air guide member 21 opens the air outlet 102, the air passage 103 forms an air intake passage. When the air guide member 21 covers the air outlet 102, the air passage 103 forms an exhaust passage.

[0113] The air conditioner 100 has a first air supply state and a second air supply state.

[0114] In the first air supply state, the air guide 21 opens the air outlet 102 to form an air intake channel in the air passage 103. In this state, the air guide 21 opens the air outlet 102, and high-speed air flows out of the air outlet 102, which can form a local negative pressure zone in the air duct 101. Air from outside the outer casing 10 can be introduced into the air duct 101 through the air passage 103 and mixed with the air in the air duct 101 before being sent out from the air outlet 102. By introducing external air, on the one hand, the outlet air temperature of the air outlet 102 changes gradually, avoiding discomfort caused by sudden changes in outlet air temperature, and on the other hand, the humidity of the air blown out of the air outlet 102 is moderate.

[0115] In the second air supply state, the air guide 21 covers the corresponding air outlet 102 so that the air passage 103 forms an exhaust passage. In this state, the air guide 21 covering the air outlet 102 can form a high-pressure zone in the air duct 101, and the airflow in the air duct 101 can be exhausted from the air passage 103 to the outside of the outer casing 10.

[0116] The air guide 21 can be provided with air diffusers, allowing airflow within the air duct 101 to be discharged through multiple air diffusers. This effectively increases the airflow volume and cooling capacity, eliminating the feeling of draft. Alternatively, the air guide 21 can be a non-perforated structure, allowing the air outlet 102 to be completely sealed when it covers it.

[0117] It should be noted that the air supply state of the air conditioner 100 is not limited to the two mentioned above. During operation, the air conditioner 100 can also control the air guide 21 to swing periodically. During the swing of the air guide 21, the positive and negative pressure in the air duct 101 switches, causing the air passage 103 to switch between the air intake function and the air exhaust function, thereby making the air conditioner 100 form an intake and exhaust effect similar to breathing.

[0118] In the above technical solution, by setting the air guide component 20, the switching between the first air supply state and the second air supply state can be realized, thereby meeting a variety of usage needs.

[0119] like Figure 2 As shown, in some embodiments, the air guide assembly 20 further includes a second driving component 22, which can drive the air guide 21 to move, so that the air guide 21 can open or cover the air outlet 102, making control more convenient.

[0120] like Figure 4 As shown, in this embodiment, there are two air outlets 102, namely the first air outlet 1021 and the second air outlet 1022. There are two air guides 21, which are used to cover or open the first air outlet 1021 and the second air outlet 1022 respectively. Multiple air diffusers can be provided on both air guides 21. At least two air passages 103 include a first air passage 1033 and a second air passage 1034, and the first air passage 1033 and the second air passage 1034 are located on both sides of the air duct 101.

[0121] The air conditioner 100 has a first air supply state and a second air supply state.

[0122] In the first air supply state, the two air guides 21 open their corresponding air outlets 102 to form an air intake channel between the first air passage 1033 and the second air passage 1034. Specifically, in this state, one air guide 21 opens the first air outlet 1021 and the other air guide 21 opens the second air outlet 1022. High-speed air flows out from the first air outlet 1021 and the second air outlet 1022, which can respectively form local negative pressure zones at the first branch channel 1012 and the second branch channel 1013. Air outside the outer casing 10 can be introduced into the air duct 101 through the first air passage 1033 and the second air passage 1034, and mixed with the air in the air duct 101, and finally sent out from the first air outlet 1021 and the second air outlet 1022. By introducing external air, the air temperature of the first air outlet 1021 and the second air outlet 1022 gradually changes, avoiding discomfort caused by sudden changes in air temperature. On the other hand, the humidity of the air blown out by the first air outlet 1021 and the second air outlet 1022 is moderate.

[0123] In the second air supply state, the two air guides 21 cover the corresponding air outlets 102 so that the first air passage 1033 and the second air passage 1034 form an exhaust channel. Specifically, in this state, one air guide 21 covers the first air outlet 1021, and the other air guide 21 covers the second air outlet 1022. The first branch channel 1012 and the second branch channel 1013 form separate high-pressure zones. The airflow in the air duct 101 can be discharged to the outside of the outer casing 10 through the first air passage 1033 and the second air passage 1034, respectively. In embodiments where the air guide 21 has diffuser holes, the airflow entering the first branch channel 1012 can be discharged from the multiple diffuser holes of the corresponding air guide 21, and the airflow entering the second branch channel 1013 can be discharged from the multiple diffuser holes of the corresponding air guide 21. Thus, the airflow can be discharged from the multiple diffuser holes on the air guide 21, the first air passage 1033, and the second air passage 1034, effectively improving the airflow and cooling capacity without a draft.

[0124] According to some embodiments of this utility model, a heat exchanger 50 is disposed between the air inlet 108 and the impeller 60 of the rear shell 1004. The heat exchanger 50 includes a first heat exchange section 51 and a second heat exchange section 52. The first heat exchange section 51 is disposed near the left side of the rear shell 1004, and the second heat exchange section 52 is disposed near the rear side of the rear shell 1004. The first heat exchange section 51 and the second heat exchange section 52 are connected by an arc transition. A heating element 70 is provided between the impeller 60 and the heat exchanger 50.

[0125] The outer casing 10 of the air conditioner 100 also includes a chassis 1005 and a top cover 1006. The lower ends of the front cover 1001 and the rear cover 1004 are connected to the chassis 1005 and cover the side wall of the chassis 1005 so that the chassis 1005 is hidden. The upper ends of the front cover 1001 and the rear cover 1004 are connected to the top cover 1006 and cover the side wall of the top cover 1006 so that the top cover 1006 is hidden.

[0126] According to some embodiments of this utility model, the air conditioner 100 is a cabinet-type air conditioner. The air conditioner 100 can be the indoor unit of a split-type air conditioner or an integrated air conditioner.

[0127] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0128] In the description of this utility model, "first feature" and "second feature" may include one or more of the features. In the description of this utility model, "multiple" means two or more. In the description of this utility model, "above" or "below" the second feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. In the description of this utility model, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0129] Other components and operations of the air conditioner according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0130] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0131] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An air conditioner characterized by comprising: include: The housing includes a front housing and a rear housing, the front housing having an air outlet and a ventilation opening, the ventilation opening being located on one side of the air outlet; A duct component, which is disposed inside the outer shell and connected to the front shell, defines an air duct, and a fan wheel is provided inside the air duct; A vent frame is provided between the air duct component and the front shell, and the vent frame itself defines an air passage. One end of the air passage is connected to the external space of the shell through the vent, and the other end of the air passage is connected to the air duct.

2. The air conditioner according to claim 1, characterized in that, The air passage has a first air passage and a second air passage at each end, with the second air passage being positioned closer to the ventilation opening than the first air passage. The distance between the first air vent and the second air vent is 40mm-80mm; And / or, the width of the first air vent is L1, the width of the second air vent is L2, and L2≤L1; and / or, 10mm≤L1≤20mm, 10mm≤L2≤20mm.

3. The air conditioner of claim 1, wherein The air duct component includes: A wind turbine housing that defines a portion of the air duct, wherein the wind turbine is disposed within the wind turbine housing; An air outlet frame is connected between the impeller housing and the front housing and defines another part of the air duct, and an air passage frame is located on at least one side of the air outlet frame.

4. The air conditioner of claim 3, wherein At least one air passage frame is a first air passage frame, and the first air passage frame is located on one side of the wall where the air outlet frame is connected to the volute tongue of the impeller housing; The first air passage frame defines a first air passage. In the cross-section of the air conditioner, the first air passage extends from back to front in a direction away from the air duct and is connected to the air duct through an air passage cavity.

5. The air conditioner of claim 4, wherein In the cross-section of the air conditioner, the angle between the extending direction of the channel wall of the first air passage and the plane containing the end of the first air passage away from the external space is α1, where 50°≤α1≤70°.

6. The air conditioner of claim 4, wherein The outer casing is also provided with an air inlet, and a heat exchanger is provided between the air inlet and the impeller. A sealing side plate is connected between the heat exchanger and the impeller casing. The air outlet frame, the sealing side plate, the impeller housing, and the air passage frame define the air passage cavity. The air outlet frame has a connecting opening that connects the air passage cavity and the air duct.

7. The air conditioner of claim 3, wherein At least one air passage frame is a second air passage frame, and the second air passage frame is connected between the volute shell and the air outlet frame, which are disposed opposite to the volute tongue of the impeller housing; The second air passage frame defines a second air passage, which extends from back to front in a direction away from the air passage.

8. The air conditioner of claim 7, wherein The second air passage frame has a first sidewall and a second sidewall that are disposed opposite to each other. The first sidewall is connected to the volute of the impeller housing that is disposed opposite to the volute tongue. The second sidewall is connected to the air outlet frame. One end of the second air passage is located between the first sidewall and the second sidewall. In the cross-section of the air conditioner, the angle between the second air passage near the first side wall and the first side wall is α2, where 90°≤α2≤120°. And / or, in the cross-section of the air conditioner, the angle between the wall where the volute tongue of the impeller housing is located and the first side wall is α3, 90°≤α3≤140°; And / or, in the cross-section of the air conditioner, the angle between the channel wall of the second air passage near the second side wall and the second side wall is α4, 100°≤α4≤150°; And / or, the angle between the wall where the volute of the wind turbine housing is located and the first side wall is α3, and the angle between the channel wall of the second air passage near the second side wall and the second side wall is α4, 90°≤α3≤α4.

9. The air conditioner according to any one of claims 3 to 8, wherein The air duct includes a main channel, a first branch channel and a second branch channel, and there are at least two air outlets, which are a first air outlet and a second air outlet, respectively. The first branch channel is connected between the first air outlet and the main channel, and the second branch channel is connected between the second air outlet and the main channel. Wherein, the air passage includes a first air passage, which is located on the side of the first branch passage away from the second branch passage and is connected to the first branch passage or the main passage; and / or, the air passage includes a second air passage, which is located on the side of the second branch passage away from the first branch passage and is connected to the second branch passage or the main passage.

10. The air conditioner of claim 9, wherein The air conditioner also includes a louver assembly, which includes a connecting rod and a plurality of louvers. The connecting rod is disposed on the air outlet frame and connected to the plurality of louvers. A portion of the plurality of louvers extends into the first branch channel and another portion extends into the second branch channel. The plurality of louvers are integrally formed with the connecting rod, or the plurality of louvers are rotatably disposed on the connecting rod.

11. The air conditioner according to any one of claims 1 to 8, wherein The air passage extends along the height of the front shell, and multiple air guide plates are provided inside the air passage. The multiple air guide plates are arranged along the height of the front shell, and the air guide plates gradually extend upward from the inside to the outside.

12. The air conditioner according to claim 11, characterized in that, The angle between the air guide plate and the horizontal plane is 30°-45°; and / or, multiple air guide plates are integrally formed with the air passage frame.

13. The air conditioner according to any one of claims 1 to 8, wherein The ventilation opening is equipped with a switch door for opening and closing the ventilation opening.

14. The air conditioner of any one of claims 1-8, wherein, Also includes: The air guiding assembly further includes a movable air guiding element for covering or opening the air outlet. When the air guiding element opens the air outlet, the air passage forms an air intake passage. When the air guiding element covers the air outlet, the air passage forms an exhaust passage.

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