Air duct structure, air duct assembly and cabinet air conditioner

Abstract

The invention provides an air duct structure, an air duct assembly and a cabinet air conditioner, and belongs to the technical field of air conditioners. According to the air duct structure, through control of the on-off mechanism and the air door, the air duct structure can flexibly switch the upper air supply mode and the lower air supply mode. By means of the design, the requirements for shower type air supply of cold air flow through the upper air opening and carpet type air supply of hot air flow through the lower air opening are met, and the air supply effect and the user comfort are further improved by reducing vortexes at the air duct switching position and lowering noise.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, in particular to an air duct structure, an air duct assembly and a cabinet air conditioner. BACKGROUND

[0002] In order to meet the higher comfort requirements, the existing air conditioner usually adopts the design of upper and lower air outlets, so that the cold air flow can pass through the upper air outlet for shower type air supply and the hot air flow can pass through the lower air outlet for carpet type air supply, so as to achieve better air supply effect.

[0003] That is, the existing cabinet air conditioner can realize reversible air supply up and down, but when the existing cabinet air conditioner realizes reversible air supply up and down, there is a large vortex, which affects the air supply effect. SUMMARY

[0004] The air duct structure, the air duct assembly and the cabinet air conditioner provided by the embodiments of the present application can flexibly switch the upper air supply mode and the lower air supply mode through the control of the on-off mechanism and the air door. This design not only meets the requirements of the cold air flow passing through the upper air outlet for shower type air supply and the hot air flow passing through the lower air outlet for carpet type air supply, but also reduces the vortex at the air duct switching position and reduces the noise, thereby further improving the air supply effect and user comfort. Specifically:

[0005] The first aspect of the embodiments of the present application provides an air duct structure, comprising:

[0006] A main air duct, the main air duct is formed with an upper air chamber, a fan mounting chamber and a lower air chamber from top to bottom, the fan mounting chamber is used for mounting a centrifugal fan, an upper air duct opening is formed at the upper end of the upper air chamber, and a lower air duct opening is formed at the lower end of the lower air chamber;

[0007] A switching air duct, the upper side of the switching air duct is communicated with the lower air duct opening, the left side of the switching air duct is formed with a first switching air duct opening located at the left side of the lower air duct opening, and the right side of the switching air duct is formed with a second switching air duct opening located at the right side of the lower air duct opening;

[0008] The main air duct is further provided with an air door opening in the lower air chamber, and the air door can be controlled to be opened or closed. The air duct structure comprises an on-off mechanism, and the air duct structure has an upper air supply mode and a lower air supply mode, wherein:

[0009] In the upper air supply mode, the on-off mechanism disconnects the communication between the second switching air duct opening and the lower air duct opening, and forms a first switching air duct section between the first switching air duct opening and the lower air duct opening, which at least partially passes through the curved surface transition. The air door is controlled to be opened, and the airflow can pass through the first switching air duct opening, the first switching air duct section, the lower air duct opening, the air door, the fan mounting chamber and the upper air chamber in sequence and then be discharged from the upper air duct opening;

[0010] In the lower air supply mode, the on-off mechanism disconnects the communication between the first switching air duct port and the lower air duct port, and forms a second switching air duct section between the second switching air duct port and the lower air duct port, which at least partially passes through the curved surface transition, the damper is controlled to be closed, and the airflow can be sequentially discharged from the second switching air duct port after passing through the fan mounting cavity, the lower air cavity, the lower air duct port and the second switching air duct section.

[0011] In the above technical solution, the on-off mechanism includes a first air deflector and a second air deflector, wherein:

[0012] In the upper air supply mode, the first air deflector is hidden in the lower air cavity, and the second air deflector is connected between the air cavity wall of the lower air cavity and the lower edge of the first switching air duct port, so as to open the first switching air duct port and the lower air cavity while closing the second switching air duct port and the lower air cavity.

[0013] In the lower air supply mode, the second air deflector is hidden in the lower air cavity, and the first air deflector is connected between the air cavity wall of the lower air cavity and the lower edge of the second switching air duct port, so as to open the second switching air duct port and the lower air cavity while closing the first switching air duct port and the lower air cavity.

[0014] In the above technical solution, the lower air cavity includes a left lower air cavity wall close to one side of the first switching air duct port and a right lower air cavity wall close to one side of the second switching air duct port, wherein:

[0015] In the upper air supply mode, the upper end surface of the second air deflector is connected to the bottom of the right lower air cavity wall, and the lower end surface of the second air deflector is connected to the lower edge of the first switching air duct port on the right side.

[0016] In the lower air supply mode, the upper end surface of the first air deflector is connected to the bottom of the left lower air cavity wall, and the lower end surface of the first air deflector is connected to the lower edge of the second switching air duct port on the left side.

[0017] In the above technical solution, the first air deflector and the second air deflector are both arc-shaped plate members, wherein:

[0018] In the upper air supply mode, the second air deflector is concave to the second switching air duct port.

[0019] In the lower air supply mode, the first air deflector is concave to the first switching air duct port.

[0020] In the above technical solution, the projection of the second air deflector concave to the second switching air duct port in the up-down direction is located on the left side of the bottom of the right lower air cavity wall.

[0021] The projection of the first air deflector concave to the first switching air duct port in the up-down direction is located on the right side of the bottom of the left lower air cavity wall.

[0022] In the technical solution, the upper opening of the first adapter air duct is connected to the bottom of the left side wall of the lower air cavity.

[0023] and / or

[0024] The upper opening of the second adapter air duct is connected to the bottom of the right side wall of the lower air cavity.

[0025] In the technical solution, the upper opening and the lower opening of the first adapter air duct are parallel; and / or

[0026] The upper opening and the lower opening of the second adapter air duct are parallel.

[0027] In the technical solution, the upper air cavity is connected to the upper left end of the fan mounting cavity and extends to the right upper side, and the extended end of the upper air cavity forms the upper air duct opening; the lower air cavity is connected to the lower right end of the fan mounting cavity and extends to the left lower side, and the extended end of the lower air cavity forms the lower air duct opening.

[0028] In the technical solution, the air duct structure further comprises a volute tongue movement mechanism, which can rotate around the rotation center of the centrifugal fan, and has a first position and a second position when rotating, in the first position, the volute tongue movement mechanism disconnects the communication between the lower air cavity and the fan mounting cavity, and in the second position, the volute tongue movement mechanism disconnects the communication between the upper air cavity and the fan mounting cavity.

[0029] In the technical solution, the air duct structure in the upper air supply mode, the volute tongue movement mechanism rotates to the first position.

[0030] In the technical solution, the air duct structure in the lower air supply mode, the volute tongue movement mechanism rotates to the second position.

[0031] In the technical solution, the air duct structure in the lower air supply mode, the volute tongue movement mechanism rotates to the second position.

[0032] The second aspect of the embodiment of the application provides an air duct assembly, which comprises a centrifugal fan and the air duct structure provided in the first aspect of the embodiment of the application, and the centrifugal fan is arranged in the fan mounting cavity of the air duct structure.

[0033] In the technical solution, the centrifugal fan is a double-suction centrifugal fan with air inlet on both axial sides.

[0034] The third aspect of the embodiment of the application further provides a cabinet air conditioner, which comprises the air duct assembly provided in the second aspect of the embodiment of the application.

[0035] In the technical solution, the cabinet air conditioner comprises:

[0036] The housing and air duct assembly are located inside the housing, and the air duct assembly and the housing define the housing channel. The top of the housing is provided with a top air vent, which is connected to the upper air duct opening. The bottom side of the housing is provided with a bottom side air vent one and a bottom side air vent two. The bottom side air vent one is connected to the first transfer air duct opening, and the bottom side air vent is connected to the second transfer air duct opening.

[0037] A cabinet air conditioner should include at least a cooling mode and a heating mode, wherein:

[0038] In cooling mode, the air duct structure is controlled to deliver air in the above air delivery mode. The airflow passes through the bottom side air outlet 1, the first transfer air duct outlet, the lower air cavity, the air door, the body housing channel, the fan mounting cavity, the upper air cavity, the upper air duct outlet in sequence, and then blows out from the top air outlet.

[0039] In heating mode, the air duct structure is controlled to deliver air in the following manner: the airflow passes through the top air vent, the casing channel, the fan mounting cavity, the lower air cavity, and the lower air duct opening in sequence, and then is blown out from the bottom side air vent two.

[0040] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0041] The duct structure in this embodiment, through the control of the on / off mechanism and the damper, allows for flexible switching between upward and downward air supply modes. This design not only meets the requirements of shower-like airflow from the upper vent and carpet-like airflow from the lower vent, but also further improves the air supply effect and user comfort by reducing eddies at duct transition points and lowering noise. Attached Figure Description

[0042] Figure 1 A front view of the air duct structure in the embodiments of this application. Figure 1 The air duct structure in the diagram uses an above-ground air supply method.

[0043] Figure 2 Side view of the air duct structure in the embodiments of this application. Figure 1 The air duct structure in the diagram uses an above-ground air supply method.

[0044] Figure 3 A front view of the air duct structure in the embodiments of this application. Figure 2 The air duct structure in the diagram uses an air supply method.

[0045] Figure 4 Side view of the air duct structure in the embodiments of this application. Figure 2 The air duct structure in the diagram uses an air supply method.

[0046] Figure 5 A front view of the cabinet air conditioner in the embodiments of this application. Figure 1, the air conditioner in the figure runs in a cooling mode;

[0047] Figure 6 is a front view of a cabinet type air conditioner in the embodiment of the present application Figure 2 , the air conditioner in the figure runs in a heating mode;

[0048] Figure 7 is a simulation schematic view of an existing air duct and the air duct in the embodiment of the present application in an upper air supply mode;

[0049] Figure 8 is a simulation schematic view of an existing air duct and the air duct in the embodiment of the present application in a lower air supply mode.

[0050] wherein:

[0051] 10-main air duct; 101-upper air cavity; 1011-upper air duct opening; 102-fan mounting cavity; 103-lower air cavity; 1031-lower air duct opening; 104-air door;

[0052] 20-centrifugal fan;

[0053] 30-adapting air duct; 301-first adapting air duct opening; 302-second adapting air duct opening; 303-first adapting air duct section; 304-second adapting air duct section;

[0054] 40-first air deflector;

[0055] 50-second air deflector;

[0056] 60-volute tongue movement mechanism;

[0057] 70-casing. DETAILED DESCRIPTION

[0058] Embodiments of the present application are described in detail below with reference to the attached drawings, which show by way of example, embodiments in which the same or similar elements or elements having the same or similar functions are denoted by the same reference numerals throughout the drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.

[0059] Throughout the specification and claims, the following terms have at least the meanings explicitly associated herein, unless the context otherwise requires. The meanings identified below do not necessarily limit the terms, but merely provide illustrative examples of the terms.

[0060] In the description of the application, the phrase "in an embodiment" does not necessarily refer to the same embodiment, although it can. Similarly, as used herein the phrase "in some embodiments", as used multiple times herein, does not necessarily refer to the same embodiment, although it can. As used herein, the term "or" is the inclusive and not the exclusive or operator, and is equivalent to the term "and / or", unless the context clearly dictates otherwise. The term "based on" is not exclusive and allows for additional factors based on which the determination is made, unless the context clearly dictates otherwise. The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations. The scope of the application is solely limited by the scope of the claims appended hereto, and any examples set forth in the description of the application are not intended to limit the scope of the application, but merely to exemplify a number of possible embodiments of the claimed application. The various embodiments provided by the application should not be construed as limiting the scope of the application.

[0061] In the description of the application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0062] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0063] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0064] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature is "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature is "under", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0065] As Figures 1-8 shown, the first aspect of the embodiment of the present application provides a wind channel structure, comprising:

[0066] A main wind channel 10, the main wind channel 10 is formed with an upper wind cavity 101, a fan mounting cavity 102 and a lower wind cavity 103 from top to bottom, the fan mounting cavity 102 is used for mounting a centrifugal fan 20, an upper end of the upper wind cavity 101 is formed with an upper wind channel opening 1011, a lower end of the lower wind cavity 103 is formed with a lower wind channel opening 1031;

[0067] An adapter wind channel 30, an upper side of the adapter wind channel 30 is communicated with the lower wind channel opening 1031, a left side of the adapter wind channel 30 is formed with a first adapter wind channel opening 301 located at a left side of the lower wind channel opening 1031, and a right side of the adapter wind channel 30 is formed with a second adapter wind channel opening 302 located at a right side of the lower wind channel opening 1031;

[0068] The main wind channel 10 is further provided with an air door 104 which is opened to the lower wind cavity 103, and the air door 104 can be controlled to be opened or closed, the wind channel structure comprises an on-off mechanism, and the wind channel structure has an upper air supply mode and a lower air supply mode, wherein:

[0069] In the upper air supply mode, the on-off mechanism disconnects the communication between the second adapter wind channel opening 302 and the lower wind channel opening 1031, and forms a first adapter wind channel section 303 between the first adapter wind channel opening 301 and the lower wind channel opening 1031 which at least partially transitions through a curved surface, the air door is controlled to be opened, and airflow can be discharged from the upper wind channel opening 1011 after sequentially passing through the first adapter wind channel opening 301, the first adapter wind channel section 303, the lower wind channel opening 1031, the air door 104, the fan mounting cavity 102 and the upper wind cavity 101;

[0070] In the lower air supply mode, the on-off mechanism disconnects the communication between the first adapter wind channel opening 301 and the lower wind channel opening 1031, and forms a second adapter wind channel section 304 between the second adapter wind channel opening 302 and the lower wind channel opening 1031 which at least partially transitions through a curved surface, the air door 104 is controlled to be closed, and airflow can be discharged from the second adapter wind channel opening 302 after sequentially passing through the fan mounting cavity 102, the lower wind cavity 103, the lower wind channel opening 1031 and the second adapter wind channel section 304.

[0071] The air duct structure in the embodiments of the present application can flexibly switch between the upper air supply mode and the lower air supply mode through the control of the on-off mechanism and the air door 104. This design not only meets the requirements of cold air flow through the upper air outlet for shower air supply and hot air flow through the lower air outlet for carpet air supply, but also further improves the air supply effect and user comfort by reducing vortex at the air duct switching position and reducing noise. For example, in the refrigeration mode, through the upper air supply mode, the cold air flow can be more evenly distributed in the entire space, avoiding direct blowing of cold air to the human body; in the heating mode, through the lower air supply mode, the hot air flow can more effectively cover the ground, realizing carpet air supply and improving the overall heating effect.

[0072] Specifically, in the upper air supply mode, the on-off mechanism disconnects the communication between the second switching air duct opening 302 and the lower air duct opening 1031, and forms a first switching air duct section 303 between the first switching air duct opening 301 and the lower air duct opening 1031, which at least partially transitions through a curved surface. This design makes the air flow more smoothly transition to the lower air duct opening 1031 when entering from the first switching air duct opening 301 and passing through the first switching air duct section 303, reducing the vortex at the switching position. At the same time, the air door 104 is controlled to be opened, and the air flow can pass through the first switching air duct opening 301, the first switching air duct section 303, the lower air duct opening 1031, the air door 104, the fan mounting cavity 102 and the upper air cavity 101 in turn, and finally discharged from the upper air duct opening 1011. This process effectively reduces the vortex of air flow at the switching position, reduces the air volume loss, and improves the air supply efficiency.

[0073] Specifically, in the lower air supply mode, the on-off mechanism disconnects the communication between the first switching air duct opening 301 and the lower air duct opening 1031, and forms a second switching air duct section 304 between the second switching air duct opening 302 and the lower air duct opening 1031, which at least partially transitions through a curved surface. The air door 104 is controlled to be closed, and the air flow can pass through the fan mounting cavity 102, the lower air cavity 103, the lower air duct opening 1031 and the second switching air duct section 304 in turn, and finally discharged from the second switching air duct opening 302. This design also reduces the vortex of air flow at the switching position, reduces noise, and improves user comfort.

[0074] Further, in some possible real-time modes, the on-off mechanism includes a first air deflector 40 and a second air deflector 50, wherein:

[0075] In the upper air supply mode of the air duct structure, the first air deflector 40 is hidden in the lower air cavity 103, and the second air deflector 50 is connected between the air cavity wall of the lower air cavity 103 and the lower edge of the first switching air duct opening 301, so as to open the first switching air duct opening 301 and the lower air cavity 103 while closing the communication between the second switching air duct opening 302 and the lower air cavity 103.

[0076] In the lower air supply mode, the second air deflector 50 is hidden in the lower air cavity 103, and the first air deflector 40 is connected between the air cavity wall of the lower air cavity 103 and the lower edge of the second transition air duct port 302, so as to close the communication between the first transition air duct port 301 and the lower air cavity 103 while opening the communication between the second transition air duct port 302 and the lower air cavity 103.

[0077] In the embodiments of the present application, the air duct structure can be flexibly switched between the upper air supply mode and the lower air supply mode through the switching of the first air deflector 40 and the second air deflector 50. This design not only meets the needs of different air supply modes, but also further optimizes the air supply effect by precisely controlling the airflow path. For example, in the refrigeration mode, through the upper air supply mode, the cold airflow can be more evenly distributed in the entire space, avoiding direct blowing of cold air to the human body; in the heating mode, through the lower air supply mode, the hot airflow can more effectively cover the ground, realizing carpet air supply and improving the overall heating effect.

[0078] Specifically, in the upper air supply mode, the first air deflector 40 is hidden in the lower air cavity 103, and the second air deflector 50 is connected between the air cavity wall of the lower air cavity 103 and the lower edge of the first transition air duct port 301. This layout ensures that the airflow can smoothly enter the lower air cavity 103 from the first transition air duct port 301 and smoothly transition to the lower air duct port 1031 through the first transition air duct section 303. At the same time, the presence of the second air deflector 50 effectively closes the communication between the second transition air duct port 302 and the lower air cavity 103, preventing the airflow from entering the wrong path, thereby precisely controlling the airflow path and avoiding the generation of airflow turbulence and vortex.

[0079] Specifically, in the lower air supply mode, the second air deflector 50 is hidden in the lower air cavity 103, and the first air deflector 40 is connected between the air cavity wall of the lower air cavity 103 and the lower edge of the second transition air duct port 302. This layout ensures that the airflow can smoothly enter the second transition air duct port 302 from the lower air cavity 103 and smoothly exit through the second transition air duct section 304. At the same time, the presence of the first air deflector 40 effectively closes the communication between the first transition air duct port 301 and the lower air cavity 103, further reducing airflow turbulence and vortex generation, thereby reducing noise and improving the stability and comfort of air supply.

[0080] Further, in some possible embodiments, the lower air cavity 103 includes a left lower air cavity wall close to one side of the first transition air duct port 301 and a right lower air cavity wall close to one side of the second transition air duct port 302, wherein:

[0081] In the up-blowing mode, the upper end surface of the second air guide plate 50 is connected to the bottom of the right lower air cavity wall, and the lower end surface of the second air guide plate 50 is connected to the lower opening of the first transition air duct port 301 along the right side.

[0082] In the down-blowing mode, the upper end surface of the first air guide plate 40 is connected to the bottom of the left lower air cavity wall, and the lower end surface of the first air guide plate 40 is connected to the lower opening of the second transition air duct port 302 along the left side.

[0083] The precise positions and connection modes of the first air guide plate 40 and the second air guide plate 50 in the embodiments of the present application not only optimize the guidance of air flow, but also enhance the reliability and stability of the system. Through precise connection, the air guide plate can work stably in different modes, reducing mechanical failures caused by air flow impact and prolonging the service life of the system. At the same time, this design also reduces the pressure fluctuations of the system caused by chaotic air flow, further improving the running stability of the system.

[0084] Specifically, in the up-blowing mode, the upper end surface of the second air guide plate 50 is connected to the bottom of the right lower air cavity wall, and the lower end surface is connected to the lower opening of the first transition air duct port 301 along the right side. This layout ensures that the air flow can smoothly enter the lower air cavity 103 from the first transition air duct port 301 and smoothly transition to the lower air duct port 1031 through the first transition air duct section 303. At the same time, the presence of the second air guide plate 50 effectively closes the communication between the second transition air duct port 302 and the lower air cavity 103, preventing air flow from entering the wrong path, thereby accurately controlling the path of the air flow and avoiding the generation of chaotic air flow and vortex.

[0085] Specifically, in the down-blowing mode, the upper end surface of the first air guide plate 40 is connected to the bottom of the left lower air cavity wall, and the lower end surface is connected to the lower opening of the second transition air duct port 302 along the left side. This layout ensures that the air flow can smoothly enter the second transition air duct port 302 from the lower air cavity 103 and smoothly discharge through the second transition air duct section 304. At the same time, the presence of the first air guide plate 40 effectively closes the communication between the first transition air duct port 301 and the lower air cavity 103, further reducing the chaotic air flow and vortex.

[0086] Further, in some possible embodiments, the first air guide plate 40 and the second air guide plate 50 are both arc-shaped plate members, wherein:

[0087] In the up-blowing mode, the second air guide plate 50 is concave to the second transition air duct port 302;

[0088] In the down-blowing mode, the first air guide plate 40 is concave to the first transition air duct port 301.

[0089] The arc-shaped air guide plates in the embodiments of the present application can more effectively reduce the vortex of air flow at the transition. In the up-blowing mode, the arc-shaped design of the second air guide plate 50 enables the air flow to transition more smoothly when entering the lower air cavity 103, reducing the generation of vortex. In the down-blowing mode, the arc-shaped design of the first air guide plate 40 also reduces the vortex of air flow when entering the second transition air duct opening 302. This design significantly reduces the noise caused by vortex, and improves the stability and comfort of air supply.

[0090] Specifically, in the up-blowing mode, the second air guide plate 50 is concave to the second transition air duct opening 302. This arc-shaped design enables the air flow to transition more smoothly along the arc surface of the second air guide plate 50 when entering the lower air cavity 103 from the first transition air duct opening 301. The arc-shaped air guide plate can better guide the air flow, reduce the impact and vortex of air flow at the transition, thereby optimizing the path of air flow and improving the air supply efficiency.

[0091] Specifically, in the down-blowing mode, the first air guide plate 40 is concave to the first transition air duct opening 301. This arc-shaped design enables the air flow to transition more smoothly along the arc surface of the first air guide plate 40 when entering the second transition air duct opening 302 from the lower air cavity 103. Similarly, the arc-shaped air guide plate can better guide the air flow, reduce the impact and vortex of air flow at the transition, thereby optimizing the path of air flow and improving the air supply efficiency.

[0092] Further, in some possible embodiments, the projection of the second air guide plate 50 concave to the second transition air duct opening 302 in the up-down direction is located at the left side of the bottom of the right lower air cavity wall;

[0093] The projection of the first air guide plate 40 concave to the first transition air duct opening 301 in the up-down direction is located at the right side of the bottom of the left lower air cavity wall.

[0094] In the embodiments of the present application, by optimizing the guidance of air flow, the concave design and projection position of the first air guide plate 40 and the second air guide plate 50 can reduce the resistance of air flow at the transition, improve the flow speed and uniformity of air flow. In the up-blowing mode, the air flow can enter the lower air cavity 103 more smoothly from the first transition air duct opening 301, and be discharged through the lower air duct opening 1031. In the down-blowing mode, the air flow can enter the second transition air duct opening 302 more smoothly from the lower air cavity 103, and be discharged through the second transition air duct section 304. This design not only improves the air supply efficiency, but also ensures the uniform distribution of air flow, further improving the comfort of users.

[0095] Specifically, in the up-blowing mode, the second air deflector 50 is concave to the second adapter air duct port 302, and the projection of the second air deflector 50 in the up-down direction is located at the left side of the bottom of the right side lower air cavity wall. This precise position layout ensures that the air flow can smoothly enter the lower air cavity 103 from the first adapter air duct port 301 and smoothly transition to the lower air duct port 1031 through the first adapter air duct section 303. At the same time, the concave design and projection position of the second air deflector 50 effectively shut off the communication between the second adapter air duct port 302 and the lower air cavity 103, preventing the air flow from entering from the wrong path, thereby precisely controlling the path of the air flow and avoiding the generation of air flow turbulence and vortex.

[0096] Specifically, in the down-blowing mode, the first air deflector 40 is concave to the first adapter air duct port 301, and the projection of the first air deflector 40 in the up-down direction is located at the right side of the bottom of the left side lower air cavity wall. This precise position layout ensures that the air flow can smoothly enter the second adapter air duct port 302 from the lower air cavity 103 and smoothly discharge through the second adapter air duct section 304. At the same time, the concave design and projection position of the first air deflector 40 effectively shut off the communication between the first adapter air duct port 301 and the lower air cavity 103, further reducing air flow turbulence and vortex generation.

[0097] Further, in some possible implementations, the upper port of the first adapter air duct port 301 is connected along the right side to the bottom of the left side lower air cavity wall.

[0098] and / or

[0099] The upper port of the second adapter air duct port 402 is connected along the left side to the bottom of the right side lower air cavity wall.

[0100] In the embodiment of the present application, the upper port of the first adapter air duct port 301 is connected along the right side to the bottom of the left side lower air cavity wall: this design ensures that the air flow can more smoothly transition to the lower air duct port 1031 when entering the lower air cavity 103 from the first adapter air duct port 301. Through this precise connection, the air flow can enter the lower air cavity 103 along the bottom of the left side lower air cavity wall, reducing the impact and vortex of the air flow at the adapter, thereby precisely controlling the path of the air flow and avoiding air flow turbulence.

[0101] In the embodiment of the present application, the upper port of the second adapter air duct port 402 is connected along the left side to the bottom of the right side lower air cavity wall: this design ensures that the air flow can more smoothly transition when entering the second adapter air duct port 402 from the lower air cavity 103. Through this precise connection, the air flow can enter the second adapter air duct port 402 along the bottom of the right side lower air cavity wall, reducing the impact and vortex of the air flow at the adapter, thereby precisely controlling the path of the air flow and avoiding air flow turbulence.

[0102] Further, in some possible implementations, the upper port of the first adapter air duct port 301 is arranged in parallel with the lower port.

[0103] and / or

[0104] The upper edge and the lower edge of the second adapter air duct port 302 are arranged in parallel.

[0105] In the embodiment of the present application, the upper edge and the lower edge of the first adapter air duct port 301 and the second adapter air duct port 302 are arranged in parallel. This design ensures that the airflow can be more smoothly transitioned when entering and leaving the adapter air duct port. The parallel edge design reduces the resistance of the airflow when entering and leaving, so that the airflow can be more evenly distributed, thereby optimizing the path of the airflow and improving the air supply efficiency.

[0106] Further, in some possible implementations, the upper air cavity 101 is connected to the upper left end of the fan mounting cavity 102 and extends in a right upper direction, and the extended end of the upper air cavity 101 forms an upper air duct port 1011; the lower air cavity 103 is connected to the lower right end of the fan mounting cavity 102 and extends in a left lower direction, and the extended end of the lower air cavity 103 forms a lower air duct port 1031.

[0107] In the embodiment of the present application, the upper air cavity 101 is connected to the upper left end of the fan mounting cavity 102 and extends in a right upper direction. This design ensures that the airflow can smoothly enter the upper air cavity 101 after passing through the fan mounting cavity 102 and finally be discharged from the upper air duct port 1011. The right upper extension trend makes the airflow more evenly distributed, reducing the impact and vortex of the airflow when entering the upper air cavity 101.

[0108] In the embodiment of the present application, the lower air cavity 103 is connected to the lower right end of the fan mounting cavity 102 and extends in a left lower direction. This design ensures that the airflow can smoothly enter the lower air cavity 103 after passing through the fan mounting cavity 102 and finally be discharged from the lower air duct port 1031. The left lower extension trend makes the airflow more evenly distributed, reducing the impact and vortex of the airflow when entering the lower air cavity 103.

[0109] That is, the extension trend design of the upper air cavity 101 and the lower air cavity 103 in the embodiment of the present application reduces the vortex of the airflow when entering and leaving the air cavity. The right upper extension trend makes the airflow more smoothly when entering the upper air cavity 101, reducing the generation of vortex. The left lower extension trend makes the airflow more smoothly when entering the lower air cavity 103, also reducing the generation of vortex.

[0110] Further, in some possible implementation manners, the air duct structure further comprises a volute tongue movement mechanism 60, the volute tongue movement mechanism 60 is capable of rotating around the rotation center of the centrifugal fan 20, the volute tongue movement mechanism 60 has a first position and a second position when rotating, in the first position, the volute tongue movement mechanism disconnects the communication between the lower air cavity 103 and the fan mounting cavity 102, in the second position, the volute tongue movement mechanism 60 disconnects the communication between the upper air cavity 101 and the fan mounting cavity 101;

[0111] wherein

[0112] In the upper air supply mode, the volute tongue movement mechanism 60 rotates to the first position;

[0113] In the lower air supply mode, the volute tongue movement mechanism 60 rotates to the second position.

[0114] Further, the second aspect of the embodiment of the present application provides an air duct assembly, which comprises the centrifugal fan 20 and the air duct structure provided by the first aspect of the embodiment of the present application, and the centrifugal fan 20 is arranged in the fan mounting cavity 102 of the air duct structure.

[0115] Further, in some possible implementation manners, the centrifugal fan 20 is a double-suction centrifugal fan with axial two-side air inlet.

[0116] Further, the third aspect of the embodiment of the present application further provides a cabinet air conditioner, which comprises the air duct assembly provided by the second aspect of the embodiment of the present application.

[0117] Further, in some possible implementation manners, the cabinet air conditioner comprises:

[0118] The air duct assembly is arranged inside the cabinet 70, and a machine body shell passage is defined between the air duct assembly and the cabinet 70, the top of the cabinet 70 is provided with a top air outlet, the top air outlet is communicated with the upper air duct opening 101, the bottom side of the cabinet 70 is provided with a first bottom side air outlet and a second bottom side air outlet, the first bottom side air outlet is communicated with the first adapter air duct opening 301, and the second bottom side air outlet is communicated with the second adapter air duct opening 302;

[0119] The cabinet air conditioner at least comprises a cooling mode and a heating mode, wherein:

[0120] In the cooling mode, the air duct structure is controlled to supply air in the upper air supply mode, and the air flow passes through the first bottom side air outlet, the first adapter air duct opening 301, the lower air cavity 103, the air door 104, the machine body shell passage, the fan mounting cavity 102, the upper air cavity 101 and the upper air duct opening 1011 in sequence, and is blown out from the top air outlet;

[0121] In the heating mode, the air duct structure is controlled to blow air in the following manner: the air flow passes through the top air outlet, the machine body shell passage, the fan mounting cavity 102, the lower air cavity 10, the lower air duct outlet 1031, and is blown out from the bottom side air outlet two.

[0122] In order to more clearly understand the cabinet air conditioner provided in the embodiments of the present application, the following specifically describes the cabinet air conditioner provided in the embodiments of the present application in combination with Figures 1-8

[0123] When the air conditioner in the embodiments of the present application operates in the cooling mode, the volute tongue movement mechanism rotates to the first position, at which time the upper air cavity 101 is in an open state, the air door 104 is opened, the second air baffle 50 is connected to the first adapter air duct outlet 301, and the first air baffle 40 is stored in the lower air cavity 103 of the air duct. As long as it does not affect the air return, it can be stored anywhere. After the above components are executed in place, after waiting for a preset time, preferably 3s, the centrifugal fan 20 starts to operate, the air flow is sucked from the first adapter air duct outlet 301, blown out through the air doors 104 on both sides, and blown out from the upper air cavity 101 after being sucked by the centrifugal fan 20. The wind field path is shown in Figure 1 、 Figure 2 and Figure 5 .

[0124] When the air conditioner in the embodiments of the present application operates in the heating mode, the volute tongue movement mechanism 60 rotates to the second position, at which time the lower air cavity 103 is in an open state, the air door 104 is closed, the first air baffle 40 is connected to the second adapter air duct outlet 302, and the second air baffle 50 is stored in the lower air cavity 103 of the air duct. As long as it does not affect the air return, it can be stored anywhere. After the above components are executed in place, after waiting for a preset time, preferably 3s, the centrifugal fan 20 starts to operate, the hot air after the evaporator 80 enters the air cavity of the air duct through the machine body shell passage and the axial air inlet of the centrifugal fan 20. Because the lower air cavity 103 of the air duct is open and the upper air cavity 101 is closed, the hot air can only be sucked by the centrifugal fan 20 from the machine body shell passage on both sides of the air duct shell 10, and then blown out from the lower air cavity 103 through the second adapter air duct outlet 302. The wind field path is shown in Figure 3 、 Figure 4 and Figure 6 .

[0125] As shown in Figure 7 and Figure 8 , it is found through actual testing and simulation calculation that:

[0126] ​In the refrigeration mode, due to the air flow being sucked from the lower end, the flow path in the air duct is short and needs to be blown out from the two side movable air doors 104, and the wind field is equivalent to a large wind resistance at a bend. Comparative testing and calculation of the active state of the first air deflector 40 and the second air deflector 50 show that when the first air deflector 40 is connected to the second transition air duct port 302 and the second air deflector 50 is stowed in the air duct, obvious vortex structure appears near the two side movable air doors 104 at this time, and the air volume loss is 5%. Due to the existence of vortex, the air flow is not smooth, and the noise quality has the sound of air flow not being smooth. If the second air deflector 50 is connected to the first transition air duct port 301 and the first air deflector 40 is stowed in the air duct, the air flow near the two side movable air doors 104 is smooth at this time, and there is no obvious vortex. Therefore, this is the reason why the second air deflector 50 is connected to the first transition air duct port 301 and the first air deflector 40 is stowed in the air duct in the refrigeration mode in the embodiment of the present application. As shown in Figure 7 .

[0127] In the heating mode, the hot air is blown out from the air outlet after passing through the lower air duct. Comparative testing and calculation of the active state of the first air deflector 40 and the second air deflector 50 show that when the second air deflector 50 is connected to the first transition air duct port 301 and the first air deflector 40 is stowed in the air duct, obvious surge sound appears at the air outlet of the air duct at this time, and the air flow velocity is obviously layered and uneven at the air outlet, showing the problem of small speed at the upper end and large speed at the lower end. When the first air deflector 40 is connected to the second transition air duct port 302 and the second air deflector 50 is stowed in the air duct, the air flow is not directly blown to the air outlet when the air flow is blown out from the lower air duct, the bend plays a buffering role on the air flow, the air flow velocity decreases and can fill the entire air outlet air duct, so that the air flow velocity is uniform at the air outlet and is not layered. The air volume is not attenuated by testing this scheme, so this is the reason why the first air deflector 40 is connected to the second transition air duct port 302 and the second air deflector 50 is stowed in the air duct in the heating mode of the present patent application, as shown in Figure 8 .

[0128] It should be noted that the left, right and other direction words mentioned in the embodiment of the present application are explained in the front view of the air duct structure, and the front view of the air duct structure is the view direction perpendicular to the side of the centrifugal fan air inlet, that is, Figure 1 and Figure 3 The view direction is the front view direction of the air duct structure.

[0129] In the above-described embodiments of the present application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments. The steps shown in the related flowcharts can be executed in a computer system such as a set of computer-executable instructions, and although the logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here. In other words, the order of the steps described in the foregoing embodiments is only an example, and reasonable adjustment of the order of the steps based on the content of the embodiments of the present application is also within the protection scope of the embodiments of the present application.

[0130] The sequence numbers or the order of introduction of the embodiments of the present application are only for description, and do not represent the advantages or disadvantages of the embodiments.

[0131] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application.

[0132] Although the embodiments of the present application have been shown and described above, it can be understood that the above-described embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A duct structure, characterized in that, include: The main air duct (10) has an upper air chamber (101), a fan mounting chamber (102) and a lower air chamber (103) formed from top to bottom. The fan mounting chamber (102) is used to install a centrifugal fan (20). An upper air duct opening (1011) is formed at the upper end of the upper air chamber (101), and a lower air duct opening (1031) is formed at the lower end of the lower air chamber (103). The transition air duct (30) is connected to the downwind duct opening (1031) on its upper side, and a first transition air duct opening (301) is formed on the left side of the downwind duct opening (1031), and a second transition air duct opening (302) is formed on the right side of the downwind duct opening (1031). The main air duct (10) is also provided with a damper (104) opening into the lower air chamber (103), and the damper (104) can be controlled to open or close. The air duct structure includes a switchable mechanism, and the air duct structure has an upward air supply mode and a downward air supply mode, wherein: In the upward air supply mode, the switchable mechanism disconnects the connection between the second transition air duct (302) and the lower air duct (1031), and forms a first transition air duct section (303) between the first transition air duct (301) and the lower air duct (1031) with at least a partial transition through a curved surface. The damper (104) is controlled to open, and the airflow can pass through the first transition air duct (301), the first transition air duct section (303), the lower air duct (1031), the damper (104), the fan mounting cavity (102), and the upper air cavity (101) in sequence before being discharged from the upper air duct (1011). In the downflow mode, the switchable mechanism disconnects the connection between the first transfer air duct opening (301) and the downflow duct opening (1031), and forms a second transfer air duct section (304) between the second transfer air duct opening (302) and the downflow duct opening (1031) with at least a partial transition through a curved surface. The damper (104) is controlled to close, and the airflow can pass sequentially through the fan mounting cavity (102), the downflow cavity (103), the downflow duct opening (1031), and the second transfer air duct section (304) before being discharged from the second transfer air duct opening (302).

2. The air duct structure according to claim 1, characterized in that, The switchable mechanism includes a first air guide plate (40) and a second air guide plate (50), wherein: In the upward air supply mode, the first air guide plate (40) is hidden in the lower air cavity (103), and the second air guide plate (50) is connected between the air cavity wall of the lower air cavity (103) and the lower edge of the first transition air duct opening (301) so as to close the connection between the second transition air duct opening (302) and the lower air cavity (103) while opening the first transition air duct opening (301) and the lower air cavity (103); In the downward air supply mode, the second air guide plate (50) is hidden in the lower air cavity (103), and the first air guide plate (40) is connected between the air cavity wall of the lower air cavity (103) and the lower edge of the second transition air duct opening (302) so as to close the connection between the first transition air duct opening (301) and the lower air cavity (103) while opening the second transition air duct opening (302) and the lower air cavity (103).

3. The air duct structure according to claim 2, characterized in that, The lower air cavity (103) includes a left lower air cavity wall near the first transition air duct opening (301) and a right lower air cavity wall near the second transition air duct opening (302), wherein: In the upward air supply mode, the upper end face of the second air guide plate (50) is connected to the bottom of the right lower air cavity wall, and the lower end face of the second air guide plate (50) is connected to the right side of the lower edge of the first transition air duct opening (301). In the downward air supply mode, the upper end face of the first air guide plate (40) is connected to the bottom of the left lower air cavity wall, and the lower end face of the first air guide plate (40) is connected to the left side of the lower edge of the second transition air duct opening (50).

4. The air duct structure according to claim 3, characterized in that, Both the first air guide plate (40) and the second air guide plate (50) are arc-shaped plates, wherein: In the upward air supply mode, the second air guide plate (50) is concave towards the second transition air duct opening (302); In the downward air supply mode, the first air guide plate (40) is concave towards the first transition air duct opening (301).

5. The air duct structure according to claim 4, characterized in that, The projection of the second air guide plate (50) recessed towards the second transition air duct opening (302) in the vertical direction is located on the bottom left side of the right lower air cavity wall; The projection of the first air guide plate (40) recessed towards the first transition air duct opening (301) in the vertical direction is located at the bottom right side of the left lower air cavity wall.

6. The air duct structure according to claim 3, characterized in that, The upper edge of the first transition air duct opening (301) connects to the bottom of the left lower air cavity wall on the right side; and / or The upper edge of the second transition air duct opening (402) connects to the bottom of the right lower air cavity wall on the left side.

7. The air duct structure according to claim 1, characterized in that, The upper and lower edges of the first transition air duct opening (301) are arranged in parallel; and / or The upper and lower edges of the second transition air duct opening (302) are arranged in parallel.

8. The air duct structure according to any one of claims 1-7, characterized in that, The upper air chamber (101) is connected to the upper left end of the fan mounting cavity (102) and extends to the upper right. The extended end of the upper air chamber (101) forms the upper air duct opening (1011). The lower air chamber (103) is connected to the lower right end of the fan mounting cavity (102) and extends to the lower left. The extended end of the lower air chamber (103) forms the lower air duct opening (1031).

9. The air duct structure according to any one of claims 1-7, characterized in that, The duct structure also includes a volute tongue mechanism (60), which is circumferentially rotatable around the rotation center of the centrifugal fan (20). The volute tongue mechanism (60) has a first position and a second position when rotating. In the first position, the volute tongue mechanism disconnects the connection between the lower air chamber (103) and the fan mounting chamber (102). In the second position, the volute tongue mechanism (60) disconnects the connection between the upper air chamber (101) and the fan mounting chamber (101). in When the air duct structure is in the upward air supply mode, the volute tongue motion mechanism (60) rotates to the first position; When the air duct structure is in the downward air supply mode, the volute tongue motion mechanism (60) rotates to the second position.

10. A duct assembly, characterized in that, It includes a centrifugal fan (20) and a duct structure according to any one of claims 1-9, wherein the centrifugal fan (20) is disposed in the fan mounting cavity (102) of the duct structure.

11. The air duct assembly according to claim 10, characterized in that, The centrifugal fan (20) is a double-suction centrifugal fan with air intake on both sides of the axis.

12. A cabinet-type air conditioner, characterized in that, Includes the air duct assembly as described in any one of claims 10 or 11.

13. The cabinet-type air conditioner according to claim 12, characterized in that, The cabinet-type air conditioner includes: The housing (70) has the air duct assembly located inside it, and the air duct assembly and the housing (70) define a housing channel. The top of the housing (70) has a top air vent, which is connected to the upper air duct opening (101). The bottom side of the housing (70) has a bottom side air vent one and a bottom side air vent two. The bottom side air vent one is connected to the first transition air duct opening (301), and the bottom side air vent is connected to the second transition air duct opening (302). The cabinet-type air conditioner includes at least a cooling mode and a heating mode, wherein: In cooling mode, the air duct structure is controlled to deliver air in the above air delivery mode. The airflow passes sequentially through the bottom side air outlet, the first transition air duct outlet (301), the lower air chamber (103), the air damper (104), the body housing channel, the fan mounting cavity (102), the upper air chamber (101), and the upper air duct outlet (1011) before being blown out from the top air outlet. In heating mode, the air duct structure is controlled to deliver air in a down-flow manner. The airflow passes sequentially through the top air vent, the housing channel, the fan mounting cavity (102), the lower air cavity (10), and the lower air duct opening (1031) before being blown out from the bottom side air vent.

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