Air duct structure and air conditioner

Abstract

The utility model discloses an air duct structure and an air conditioner, and relates to the technical field of air conditioners, the air duct structure comprises a shell, a driving mechanism and an air deflector; the shell is provided with an air inlet and an air outlet, an air duct communicating the air inlet with the air outlet is formed in the shell, and the air outlet is configured to face the ground; a noise reduction cavity communicated with the air duct is also formed in the shell; the driving mechanism is arranged on the shell; the air deflector is in transmission connection with the driving mechanism, the driving mechanism drives the air deflector to open or close the air outlet, and the air deflector has a first open state and a second open state; when the air guide plate is in the first open state, the air guide plate is located below the air outlet. When the air deflector is in the second open state, the air deflector is located on the front side of the shell. According to the technical scheme provided by the utility model, the effects that hot air falls to the ground faster and the heating comfort is better when the air conditioner wall inner machine is heated can be realized.

Description

Technical Field

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

[0002] When an air conditioner is working, the motor drives the cross-flow fan to rotate, and the airflow is delivered through the air inlet, heat exchanger, cross-flow fan, and air outlet assembly. When the air conditioner changes the airflow direction, related technologies use air outlet components such as rotating air guide vanes and rotating air guide grilles to move at the air outlet and change the airflow direction. However, the air outlet assembly will generate local pressure loss at the air outlet, increasing airflow resistance and resulting in significant airflow loss. This leads to a reduction in the airflow volume of the air conditioner. Therefore, during heating, due to the loss of airflow, a strong Coanda effect cannot be formed, resulting in poor hot air landing and poor heating comfort. Utility Model Content

[0003] The main purpose of this utility model is to propose a duct structure and air conditioner, which aims to achieve the effect of hot air landing faster and heating comfort when the air conditioner is heating.

[0004] To achieve the above objectives, this utility model proposes a duct structure, comprising:

[0005] The outer casing has an air inlet and an air outlet, and an air duct is formed inside the outer casing to connect the air inlet and the air outlet. The air outlet is configured to face the ground. A noise reduction cavity is also formed inside the outer casing to connect the air duct.

[0006] The drive mechanism is located in the housing;

[0007] An air guide plate is connected to the drive mechanism, and the drive mechanism drives the air guide plate to open or close the air outlet. The air guide plate has a first open state and a second open state.

[0008] When the air guide plate is in the first open state, it is located below the air outlet; when the air guide plate is in the second open state, it is located on the front side of the outer casing.

[0009] In one embodiment, a fan wheel is provided in the air duct. The angle between the horizontal line passing through the center of rotation of the fan wheel and the edge of the air outlet away from the front side of the outer casing is defined as the air outlet angle α, which satisfies: 55°≤α≤65°.

[0010] In one embodiment, the housing includes:

[0011] The face frame is provided with the air inlet and the air outlet;

[0012] A panel is provided to cover the front side of the faceplate;

[0013] The chassis is located within the face frame and together with the face frame and the panel, forms the air duct; the chassis and the face frame also form the noise reduction cavity.

[0014] In one embodiment, the chassis and the face frame enclose a first noise reduction cavity, the noise reduction cavity including the first noise reduction cavity, the first noise reduction cavity being located above the air inlet.

[0015] In one embodiment, the chassis is provided with a plurality of spaced-apart first noise-absorbing holes, the first noise-absorbing holes connecting the first noise reduction cavity and the air duct;

[0016] And / or, the first noise reduction cavity is filled with sound-absorbing material.

[0017] In one embodiment, the faceplate includes a first noise-reducing sealing cover, which is disposed on the side of the first noise-reducing cavity away from the air duct to seal the first noise-reducing cavity.

[0018] In one embodiment, a first support plate is provided inside the first noise reduction cavity, and the first support plate is used to support the first noise reduction sealing cover.

[0019] In one embodiment, the chassis and the face frame further enclose a second noise reduction cavity, the noise reduction cavity further comprising the second noise reduction cavity, the second noise reduction cavity being located on the side of the air duct away from the panel.

[0020] In one embodiment, the chassis is further provided with a plurality of spaced-apart second noise-absorbing holes, the second noise-absorbing holes being connected to the second noise reduction cavity and the air duct;

[0021] And / or, the second noise reduction cavity is filled with sound-absorbing material.

[0022] In one embodiment, the faceplate further includes a second noise-reducing sealing cover, which is disposed on the side of the second noise-reducing cavity away from the air duct to seal the second noise-reducing cavity.

[0023] In one embodiment, a second support plate is provided inside the second noise reduction cavity, and the second support plate is used to support the second noise reduction sealing cover.

[0024] To achieve the above objectives, this utility model also proposes an air conditioner, including the air duct structure described above.

[0025] The technical solution of this utility model increases the air outlet angle by setting the air outlet to face the ground. Therefore, when heating, there is no need to rely on the downward guiding effect of the air guide plate. When the air guide plate moves to the second open state, it is located on the front side of the outer shell, so that the air guide plate is away from the air outlet. In this way, the hot air delivered from the air outlet can blow directly to the ground, making the indoor ground temperature rise faster and the heating comfort better. Thus, the effect of the air conditioner heating hot air landing faster and heating comfort is achieved.

[0026] In addition, since the air guide plate is far away from the air outlet when heating, the airflow will not generate vortices at the air outlet, thus avoiding the problem of increased air conditioning noise caused by vortices. Furthermore, the outer casing is equipped with a noise reduction chamber connected to the ventilation duct. The design of the noise reduction chamber can effectively reduce the noise generated by the air conditioner fan during operation, thereby improving the user experience. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 A schematic diagram of an embodiment of the air duct structure provided by this utility model in the closed state;

[0029] Figure 2 A schematic diagram of an embodiment of the air duct structure provided by this utility model in a cooling state;

[0030] Figure 3 A schematic diagram of an embodiment of the air duct structure provided by this utility model in the heating state;

[0031] Figure 4 A cross-sectional view of an embodiment of the air duct structure provided by this utility model in the closed state;

[0032] Figure 5 A cross-sectional view of an embodiment of the air duct structure provided by this utility model in a cooling state;

[0033] Figure 6 A cross-sectional view of an embodiment of the air duct structure provided by this utility model in the heating state;

[0034] Figure 7 A partial structural schematic diagram from one perspective of an embodiment of the air duct structure provided by this utility model;

[0035] Figure 8A partial structural schematic diagram from another perspective of an embodiment of the air duct structure provided by this utility model;

[0036] Figure 9 A partial structural schematic diagram from another perspective of an embodiment of the air duct structure provided by this utility model;

[0037] Figure 10 A partial structural schematic diagram of an embodiment of the air duct structure provided by this utility model.

[0038] Explanation of icon numbers:

[0039]

[0040]

[0041] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0043] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0044] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0045] When an air conditioner is working, the motor drives the cross-flow fan to rotate, and the airflow is delivered through the air inlet, heat exchanger, cross-flow fan, and air outlet assembly. When the air conditioner changes the airflow direction, related technologies use air outlet components such as rotating air guide vanes and rotating air guide grilles to move at the air outlet and change the airflow direction. However, the air outlet assembly will generate local pressure loss at the air outlet, increasing airflow resistance and resulting in significant airflow loss. This leads to a reduction in the airflow volume of the air conditioner. Therefore, during heating, due to the loss of airflow, a strong Coanda effect cannot be formed, resulting in poor hot air landing and poor heating comfort.

[0046] Based on the above problems, this utility model proposes a duct structure 100, aiming to achieve faster hot air landing and better heating comfort during air conditioning heating. This duct structure 100 is applied in an air conditioner. The duct 113 of the duct structure 100 can be equipped with a heat exchanger 50, a fan wheel 40, and other structures. The air conditioner also includes a fan, which drives the fan wheel 40 of the duct structure 100 to rotate, so that airflow is delivered through the air inlet 111, heat exchanger 50, fan wheel 40, and air outlet 112. The structure of the duct structure 100 will be described below by way of embodiments.

[0047] Please see Figures 1 to 10 In one embodiment of this utility model, the air duct structure 100 includes a housing 10, a drive mechanism 20, and a guide plate 30. The housing 10 is provided with an air inlet 111 and an air outlet 112. An air duct 113 is formed inside the housing 10, connecting the air inlet 111 and the air outlet 112. The air outlet 112 is configured to face the ground. A noise reduction cavity 131 connected to the air duct 113 is also formed inside the housing 10. The drive mechanism 20 is disposed on the housing 10. The guide plate 30 is tractively connected to the drive mechanism 20. The drive mechanism 20 drives the guide plate 30 to open or close the air outlet 112. The guide plate 30 has a first open state and a second open state. When the guide plate 30 is in the first open state, the guide plate 30 is located below the air outlet 112. When the guide plate 30 is in the second open state, the guide plate 30 is located on the front side of the housing 10.

[0048] In this embodiment, the outer casing 10 is the complete outer casing 10 of the indoor unit of the air conditioner, and is provided with an air inlet 111 and an air outlet 112. An air duct 113 connecting the air inlet 111 and the air outlet 112 is formed inside, and a noise reduction cavity 131 connecting the air duct 113 is also formed inside. The air outlet 112 is oriented towards the ground. It is understood that when the air conditioner including this air duct structure 100 is installed on a wall, the air outlet 112 faces downwards from the air conditioner. In some embodiments, to make the air conditioner more aesthetically pleasing in heating mode, the panel 12 of the outer casing 10 can include a flat section and an inwardly inclined section. The inwardly inclined section is connected to the lower part of the flat section. When the air guide plate 30 is in the second open state, the air guide plate 30 moves to the front side of the inwardly inclined section, at which time the outer surface of the air guide plate 30 is flush with the flat section.

[0049] The drive mechanism 20 is used to drive the air guide plate 30 to move, so that the air guide plate 30 has a closed state and an open state. The open state includes a first open state and a second open state. The first open state corresponds to the cooling state of the air conditioner, and the second open state corresponds to the heating state of the air conditioner. The drive mechanism 20 can be installed inside or outside the housing 10, as long as it can drive the air guide plate 30 to move and switch between the closed state, the first open state, and the second open state. There can be one or two drive mechanisms 20. For example, two drive structures can be provided on both sides of the air outlet 112 to smoothly drive the air guide plate 30. Specifically, the drive mechanism 20 can be a structure in which a drive motor and a gear rack cooperate, or a structure in which a drive motor and a gear rack and a connecting rod cooperate.

[0050] The air guide vane 30 is used to move at the air outlet 112 to change the airflow direction. In cooling mode, the air guide vane 30 can move to the first open state, so that the air guide vane 30 is located below the air outlet 112, making the airflow direction guided by the air guide vane 30 close to the horizontal direction, so as to guide the airflow in a horizontal direction and avoid cold air blowing directly on the user. In heating mode, the air guide vane 30 can move to the second open state, so that the air guide vane 30 is located on the front side of the outer casing 10, so that the air guide vane 30 completely avoids the air outlet 112, thereby avoiding the air guide vane 30 affecting the airflow direction and increasing the air outlet angle of the air duct 113. Therefore, when heating, there is no need to rely on the downward guiding effect of the air guide vane 30, and the hot air delivered from the air outlet 112 can blow directly to the ground, so that the indoor floor temperature rises faster and the heating comfort is better.

[0051] In summary, the technical solution of this utility model increases the air outlet angle of the air duct 113 by setting the air outlet 112 to face the ground. Therefore, when heating, there is no need to rely on the downward guiding effect of the air guide plate 30. When the air guide plate 30 moves to the second open state, it is located on the front side of the outer shell 10, so that the air guide plate 30 is away from the air outlet 112. In this way, the hot air delivered from the air outlet 112 can blow directly to the ground, so that the indoor ground temperature rises faster and the heating comfort is better. Thus, the effect of hot air landing faster and heating comfort is achieved when the air conditioner is heating.

[0052] In addition, since the air guide plate 30 is far away from the air outlet 112 when heating, the airflow will not generate vortices at the air outlet 112, thus avoiding the problem of increased air conditioning noise caused by vortices; furthermore, the housing 10 is also provided with a noise reduction cavity 131 connected to the ventilation duct 113. The design of the noise reduction cavity 131 can effectively reduce the noise generated by the air conditioner fan during operation, thereby improving the user experience.

[0053] Please see Figure 6 In one embodiment of this utility model, a fan wheel 40 is provided in the air duct 113. The angle between the horizontal line passing through the rotation center of the fan wheel 40 and the edge of the air outlet 112 away from the front side of the outer shell 10 is defined as the air outlet angle α, which satisfies: 55°≤α≤65°.

[0054] With this configuration, the air outlet angle α between the horizontal line passing through the center of rotation of the impeller 40 and the edge of the air outlet 112 furthest from the front of the outer casing 10 can affect the air delivery effect of the air outlet 112. If the air outlet angle α is too small, without the downward guiding effect of the air guide plate 30, the hot air delivered from the air outlet 112 will not be able to blow directly to the ground effectively; while if the air outlet angle α is too large, it will lead to insufficient strength of the entire outer casing 10, thus affecting the service life of the air conditioner. Therefore, by controlling the air outlet angle α between the horizontal line passing through the center of rotation of the impeller 40 and the edge of the air outlet 112 furthest from the front of the outer casing 10, it is helpful to improve heating comfort while ensuring the strength of the outer casing 10.

[0055] It should be noted that the air outlet angle of a conventional air conditioner is usually around 30 degrees, while the air outlet angle of this solution can reach 55° to 65°, which is equivalent to 30 degrees larger than the air outlet angle of a conventional air conditioner, thus effectively increasing the air outlet angle of the air duct 113.

[0056] As some examples, the air outlet angle α can be 55°, 56°, 57°, 58°, 58.5°, 59°, 60°, 61°, 61.7°, 62°, 63°, 64°, 64.7°, 65°, etc.

[0057] Please see Figures 4 to 6In one embodiment of the present invention, the outer shell 10 includes a face frame 11, a panel 12, and a chassis 13; the face frame 11 is provided with an air inlet 111 and an air outlet 112; the panel 12 covers the front side of the face frame 11; the chassis 13 is disposed inside the face frame 11 and forms an air duct 113 with the face frame 11 and the panel 12; the chassis 13 and the face frame 11 also form a noise reduction cavity 131.

[0058] In this embodiment, the air inlet 111 can be located at the top of the face frame 11, and the air outlet 112 can be located at the bottom of the face frame 11. The chassis 13 is installed inside the face frame 11 to form an air duct 113 with the face frame 11 and the panel 12 located on the front side of the face frame 11. This allows airflow to enter the air duct 113 from the air inlet 111 at the top of the face frame 11, flow through the heat exchanger 50 and the impeller 40 inside the air duct 113, and then be discharged from the air outlet 112 at the bottom of the face frame 11. Furthermore, by using the chassis 13 and the face frame 11 to form a noise reduction cavity 131 connecting the air duct 113, the noise generated by the air conditioner fan during operation can be effectively reduced, thereby improving the user experience.

[0059] In practical applications, the noise reduction cavity 131 can be located near the air inlet 111, near the air outlet 112, or near the impeller 40 inside the air duct 113, as long as it is connected to the air duct 113. This allows the noise reduction cavity 131 to effectively absorb the noise generated by the air conditioner fan during operation. Specifically, the number of noise reduction cavities 131 can be designed as one or at least two, depending on the internal space of the housing 10. If the internal space of the housing 10 is large enough, more noise reduction cavities 131 can be designed to achieve a better noise reduction effect.

[0060] In some embodiments, a water receiving tray 60 is also provided inside the face frame 11. The water receiving tray 60 is designed to be detachable and can be connected and fixed to the chassis 13 by means of structural components such as screws and clips. A water channel 61 is provided on the water receiving tray 60, which is used to collect the condensate generated on the heat exchanger 50 in the exhaust duct 113.

[0061] Please see Figures 4 to 6 In one embodiment of the present invention, the chassis 13 and the face frame 11 enclose a first noise reduction cavity 131a, the noise reduction cavity 131 includes the first noise reduction cavity 131a, and the first noise reduction cavity 131a is located above the air inlet 111.

[0062] In this embodiment, since the air outlet 112 is set facing the ground, that is, the air outlet 112 is set at the bottom of the face frame 11, the air outlet angle of the air duct 113 is relatively low. This allows more space to be reserved in the area above the air outlet 112 for setting the first noise reduction cavity 131a. The design of the first noise reduction cavity 131a can effectively reduce the noise generated by the air conditioner fan during operation, thereby improving the user experience.

[0063] In some embodiments, the chassis 13 includes a volute for mounting the impeller 40, the outlet of the volute being connected to the air outlet 112, and the first noise reduction cavity 131a being located on the outer wall of the air outlet section of the volute, forming above the air outlet 112. The cross-sectional shape of the first noise reduction cavity 131a may include, but is not limited to, rectangular, circular, elliptical, triangular, irregular, or other shapes.

[0064] Please see Figures 4 to 6 In one embodiment of the present invention, the chassis 13 is provided with a plurality of spaced first noise reduction holes 132, which are connected to the first noise reduction cavity 131a and the air duct 113.

[0065] In this embodiment, the number and size of the first silencing holes 132 can be determined according to the actual use. Optionally, the size of the first silencing holes 132 is usually in the millimeter range.

[0066] With this configuration, the design of the first noise reduction hole 132 allows the first noise reduction cavity 131a to be directly connected to the air duct 113. The noise generated by the air conditioner fan during operation can be transmitted to the first noise reduction cavity 131a through the first noise reduction hole 132, so that the noise generated by the air conditioner fan during operation can be quickly absorbed by the first noise reduction cavity 131a, thereby better reducing the noise generated by the air conditioner fan during operation.

[0067] Please see Figures 4 to 6 In one embodiment of this utility model, the first noise reduction cavity 131a is filled with sound-absorbing material.

[0068] In this embodiment, the sound-absorbing material can be a loose, porous material, such as slag wool or blankets. Its absorption mechanism involves sound waves penetrating deep into the pores of the material, which are mostly interconnected open pores. Through friction and viscous resistance from air molecules, as well as mechanical vibration of the fine fibers, sound energy is converted into heat energy. The sound absorption coefficient of this type of porous sound-absorbing material generally increases gradually from low to high frequencies, thus exhibiting better absorption of high and mid-frequency sounds. Therefore, by filling the first noise reduction cavity 131a with sound-absorbing material, this solution can better absorb noise transmitted from the air duct 113, achieving a better noise reduction effect.

[0069] Please see Figures 4 to 8In one embodiment of the present invention, the face frame 11 includes a first noise reduction sealing cover 114, which is disposed on the side of the first noise reduction cavity 131a away from the air duct 113 to seal the first noise reduction cavity 131a.

[0070] With this setup, when sound-absorbing material needs to be filled into the first noise reduction cavity 131a, the first noise reduction sealing cover 114 can be opened to smoothly fill the sound-absorbing material. After filling, the first noise reduction sealing cover 114 is placed on the side of the first noise reduction cavity 131a away from the air duct 113 to seal the first noise reduction cavity 131a, so that the sound-absorbing material is pressed tightly inside the first noise reduction cavity 131a.

[0071] In practical applications, the first noise-reducing sealing cover 114 can be connected to the chassis 13 by means of screws, snap-fit ​​connections, etc., to ensure the installation reliability of the first noise-reducing sealing cover 114. Specifically, the first noise-reducing sealing cover 114 can be a single cover plate or multiple detachable cover plates, depending on the area of ​​the first noise-reducing cavity 131a. When the area of ​​the first noise-reducing cavity 131a is small, the first noise-reducing sealing cover 114 can be a single cover plate. When the area of ​​the first noise-reducing cavity 131a is large, a larger area of ​​the first noise-reducing sealing cover 114 is required. In this case, to prevent the large area of ​​the first noise-reducing sealing cover 114 from easily deforming, the first noise-reducing sealing cover 114 can be multiple detachable cover plates.

[0072] Please see Figure 7 , Figure 8 In one embodiment of the present invention, a first support plate 133 is provided in the first noise reduction cavity 131a, and the first support plate 133 is used to support the first noise reduction sealing cover 114.

[0073] This configuration, by employing the design of the first support plate 133, can effectively support the first noise reduction sealing cover 114, thereby preventing the first noise reduction sealing cover 114 from deforming and affecting the fixation of the sound-absorbing material.

[0074] In practical applications, the number of first support plates 133 can be designed as one or at least two, depending on the area of ​​the first noise reduction sealing cover 114.

[0075] Please see Figures 4 to 6 In one embodiment of the present invention, the chassis 13 and the face frame 11 further enclose a second noise reduction cavity 131b, and the noise reduction cavity 131 further includes the second noise reduction cavity 131b, which is located on the side of the air duct 113 away from the panel 12.

[0076] With this configuration, a second noise reduction cavity 131b can be installed on the back of the air duct 113. The design of the second noise reduction cavity 131b can further reduce the noise generated by the air conditioner fan during operation, thereby further improving the user experience.

[0077] Please see Figures 4 to 6 In one embodiment of the present invention, the chassis 13 is further provided with a plurality of spaced second noise reduction holes 134, which are connected to the second noise reduction cavity 131b and the air duct 113.

[0078] In this embodiment, the number and size of the second noise reduction hole 134 can be determined according to the actual use. Optionally, the size of the second noise reduction hole 134 is usually in the millimeter range.

[0079] With this configuration, the design of the second silencing hole 134 allows the second noise reduction cavity 131b to be directly connected to the air duct 113. The noise generated by the air conditioner fan during operation can be transmitted to the second noise reduction cavity 131b through the second silencing hole 134, so that the noise generated by the air conditioner fan during operation can be quickly absorbed by the second noise reduction cavity 131b, thereby better reducing the noise generated by the air conditioner fan during operation.

[0080] Please see Figures 4 to 6 In one embodiment of this utility model, the second noise reduction cavity 131b is filled with sound-absorbing material.

[0081] In this embodiment, the sound-absorbing material can be a loose, porous material, such as slag wool or blankets. Its absorption mechanism involves sound waves penetrating deep into the pores of the material, which are mostly interconnected open pores. Through friction and viscous resistance from air molecules, as well as mechanical vibration of the fine fibers, sound energy is converted into heat energy. The sound absorption coefficient of this type of porous sound-absorbing material generally increases gradually from low to high frequencies, thus exhibiting better absorption of high and mid-frequency sounds. Therefore, this solution, by filling the second noise reduction cavity 131b with sound-absorbing material, can better absorb noise transmitted from the air duct 113, achieving a better noise reduction effect.

[0082] Please see Figures 4 to 6 , Figure 9 In one embodiment of the present invention, the face frame 11 further includes a second noise reduction sealing cover 115, which is disposed on the side of the second noise reduction cavity 131b away from the air duct 113 to seal the second noise reduction cavity 131b.

[0083] With this setup, when sound-absorbing material needs to be filled into the second noise reduction cavity 131b, the second noise reduction sealing cover 115 can be opened to smoothly fill the sound-absorbing material. After filling, the second noise reduction sealing cover 115 is placed on the side of the second noise reduction cavity 131b away from the air duct 113 to seal the second noise reduction cavity 131b, so that the sound-absorbing material is pressed tightly inside the second noise reduction cavity 131b.

[0084] In practical applications, the second noise-reducing sealing cover 115 can be connected to the chassis 13 by means of screws, snap-fit ​​connections, etc., to ensure the installation reliability of the second noise-reducing sealing cover 115. Specifically, the second noise-reducing sealing cover 115 can be a single cover plate or multiple detachable cover plates, depending on the area of ​​the first noise-reducing cavity 131a. When the area of ​​the second noise-reducing cavity 131b is small, the second noise-reducing sealing cover 115 can be a single cover plate. When the area of ​​the second noise-reducing cavity 131b is large, a larger area of ​​the second noise-reducing sealing cover 115 is required. In this case, to prevent the large area of ​​the second noise-reducing sealing cover 115 from easily deforming, the second noise-reducing sealing cover 115 can be multiple detachable cover plates.

[0085] Please see Figure 9 In one embodiment of the present invention, a second support plate 135 is provided inside the second noise reduction cavity 131b, and the second support plate 135 is used to support the second noise reduction sealing cover 115.

[0086] This design, using a second support plate 135, effectively supports the second noise-reducing sealing cover 115, preventing deformation of the second noise-reducing sealing cover 115 that could affect the fixation of the sound-absorbing material.

[0087] In practical applications, the number of second support plates 135 can be designed as one or at least two, depending on the area of ​​the second noise reduction sealing cover 115.

[0088] This utility model also proposes an air conditioner, which includes an air duct structure 100. The specific structure of the air duct structure 100 is as described in the above embodiments. Since this air conditioner adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0089] In this embodiment, the air duct structure 100 may be provided with a heat exchanger 50, a fan wheel 40 and other structures in the air duct 113. The air conditioner also includes a fan, which is used to drive the fan wheel 40 of the air duct structure 100 to rotate so that the airflow is sent out through the air inlet 111, the heat exchanger 50, the fan wheel 40 and the air outlet 112.

[0090] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A duct structure, characterized in that, include: The outer casing has an air inlet and an air outlet, and an air duct is formed inside the outer casing to connect the air inlet and the air outlet. The air outlet is configured to face the ground. A noise reduction cavity is also formed inside the outer casing to connect the air duct. The drive mechanism is located in the housing; An air guide plate is connected to the drive mechanism, and the drive mechanism drives the air guide plate to open or close the air outlet. The air guide plate has a first open state and a second open state. When the air guide plate is in the first open state, it is located below the air outlet; when the air guide plate is in the second open state, it is located on the front side of the outer casing.

2. The air duct structure as described in claim 1, characterized in that, The air duct is equipped with a fan wheel. The angle between the horizontal line passing through the center of rotation of the fan wheel and the edge of the air outlet away from the front side of the outer casing is defined as the air outlet angle α, which satisfies: 55°≤α≤65°.

3. The air duct structure as described in claim 1, characterized in that, The outer casing includes: The face frame is provided with the air inlet and the air outlet; A panel is provided to cover the front side of the faceplate; The chassis is located within the face frame and together with the face frame and the panel, forms the air duct; the chassis and the face frame also form the noise reduction cavity.

4. The air duct structure as described in claim 3, characterized in that, The chassis and the face frame enclose a first noise reduction cavity, which includes the first noise reduction cavity and is located above the air inlet.

5. The air duct structure as described in claim 4, characterized in that, The chassis is provided with a plurality of spaced-apart first noise-absorbing holes, which are connected to the first noise reduction cavity and the air duct. And / or, the first noise reduction cavity is filled with sound-absorbing material.

6. The air duct structure as described in claim 4, characterized in that, The faceplate includes a first noise-reducing sealing cover, which is disposed on the side of the first noise-reducing cavity away from the air duct to seal the first noise-reducing cavity.

7. The air duct structure as described in claim 6, characterized in that, The first noise reduction cavity is provided with a first support plate, which is used to support the first noise reduction sealing cover.

8. The air duct structure as described in claim 3, characterized in that, The chassis and the face frame also enclose a second noise reduction cavity, which further includes the second noise reduction cavity located on the side of the air duct away from the panel.

9. The air duct structure as described in claim 8, characterized in that, The chassis is also provided with a number of spaced-apart second noise reduction holes, which are connected to the second noise reduction cavity and the air duct. And / or, the second noise reduction cavity is filled with sound-absorbing material.

10. The air duct structure as described in claim 8, characterized in that, The faceplate also includes a second noise reduction sealing cover, which is disposed on the side of the second noise reduction cavity away from the air duct to seal the second noise reduction cavity.

11. The air duct structure as described in claim 10, characterized in that, The second noise reduction cavity is provided with a second support plate, which is used to support the second noise reduction sealing cover.

12. An air conditioner, characterized in that, Includes the air duct structure as described in any one of claims 1 to 11.

Images