Air duct device and cabinet air conditioner

Abstract

This invention provides an air duct device and a cabinet air conditioner, belonging to the technical field of air handling equipment. The air duct device includes a conversion air duct and multiple centrifugal air ducts arranged side by side. Each centrifugal air duct includes an upper air supply duct, a fan blade cavity, and a lower air supply duct arranged sequentially from top to bottom. The upper air supply duct and the fan blade cavity are connected through the fan blade cavity outlet A, and the lower air supply duct and the fan blade cavity are connected through the fan blade cavity outlet B. An upper connecting port is formed between the upper air supply duct and the conversion air duct. When the upper connecting port is open, the air duct device can form a lower air outlet path, and the lower air supply duct and the lower air outlet path can discharge air simultaneously. Alternatively, a lower connecting port is formed between the lower air supply duct and the conversion air duct. When the lower connecting port is open, the air duct device can form an upper air outlet path, and the upper air supply duct and the upper air outlet path can discharge air simultaneously. When neither the upper nor the lower air supply duct is connected to the conversion air duct, the upper and lower air supply ducts can discharge air simultaneously. The structure is simple, with a large air volume, high air discharge efficiency, and uniform air discharge.

Description

Technical Field

[0001] This invention belongs to the field of air handling equipment technology, and particularly relates to an air duct device and a cabinet air conditioner. Background Technology

[0002] In existing ventilation equipment, when air is supplied through a single centrifugal duct, the centrifugal duct includes an upper supply duct, a fan blade cavity, and a lower supply duct arranged sequentially from top to bottom. The upper supply duct and the fan blade cavity are connected through the upper outlet of the fan blade cavity, and the lower supply duct and the fan blade cavity are connected through the lower outlet of the fan blade cavity. If upward air supply is required, the lower outlet of the fan blade cavity is closed, and the air in the fan blade cavity is discharged through the upper supply duct. If downward air supply is required, the upper outlet of the fan blade cavity is closed, and the air in the fan blade cavity is discharged through the lower supply duct. However, this solution has a small air volume, low air supply efficiency, and large air supply pressure loss. When air is supplied through dual centrifugal ducts, the cooperation of the two centrifugal ducts is required to achieve a large air volume supply upward or downward. However, this solution has a complex structure, poor air supply consistency, and uneven air volume. Summary of the Invention

[0003] This invention provides an air duct device and a cabinet air conditioner to at least solve the technical problems of small air volume and low air efficiency when using a single centrifugal air duct in existing ventilation equipment, and complex structure and uneven air volume when using a dual centrifugal air duct.

[0004] According to a first aspect of the embodiments of this application, an air duct device is provided for a cabinet-type air handling equipment; the air duct device forms a centrifugal air duct and a conversion air duct, the centrifugal air duct and the conversion air duct are arranged side by side, and multiple centrifugal air ducts are provided;

[0005] Each centrifugal air duct includes, from top to bottom, an upper air supply duct, a blade cavity, and a lower air supply duct. The blade cavity is used to house centrifugal blades. The blade cavity has a blade cavity outlet A on its radially upper side and a blade cavity outlet B on its radially lower side. The blade cavity has a blade cavity inlet C on its axial side. The lower end of the upper air supply duct is connected to the blade cavity outlet A, and the upper end of the upper air supply duct has an upper air supply outlet. The upper end of the lower air supply duct is connected to the blade cavity outlet B, and the lower end of the lower air supply duct has a lower air supply outlet. The upper end of the conversion air duct has a conversion air duct upper outlet, and the lower end of the conversion air duct has a conversion air duct lower outlet.

[0006] In the same centrifugal duct, an upper connecting port is formed between the upper air supply duct and the conversion duct, and the upper connecting port can be controlled to open or close; when the upper connecting port is closed, the upper air supply duct and the conversion duct are not connected; when the upper connecting port is open, the upper air supply duct and the conversion duct form a lower air outlet path between the outlet A of the fan blade cavity and the lower outlet of the conversion duct; or,

[0007] A lower connecting port is formed between the lower air supply duct and the conversion air duct, and the lower connecting port can be controlled to open or close; when the lower connecting port is closed, the lower air supply duct and the conversion air duct are not connected; when the lower connecting port is open, the lower air supply duct and the conversion air duct form an upper air outlet path between the B outlet of the fan blade cavity and the upper outlet of the conversion air duct.

[0008] In the plurality of centrifugal ducts, at least one upper air supply duct and at least one conversion duct have an upper connecting port, and at least one lower air supply duct and at least one conversion duct have a lower connecting port.

[0009] This embodiment achieves high air volume output, high air output efficiency, and uniform air output through multiple channels.

[0010] In conjunction with the first aspect, in one optional implementation of the embodiments of this application, an upper partition is provided at the upper connection port, and the upper partition is provided with a first working position and a second working position;

[0011] When the upper partition is in the first working position, the upper partition closes the upper communication port;

[0012] When the upper partition is in the second working position, the upper partition opens the upper connecting port, and the upper partition simultaneously separates the upper air supply duct, the upper connecting port and the conversion air duct;

[0013] The upper partition divides the upper air supply duct into an upper section and a lower section of the upper air supply duct that are arranged opposite each other, and the upper section and the lower section of the upper air supply duct are not connected.

[0014] The upper partition divides the upper connecting port into an upper connecting port area and a lower connecting port area that are arranged opposite each other, and the upper connecting port area and the lower connecting port area are not connected.

[0015] The upper partition divides the conversion air duct into conversion air duct section D and conversion air duct section E, which are arranged opposite each other, and the conversion air duct section D and conversion air duct section E are not connected.

[0016] The fan blade cavity outlet A, the lower section of the upper air supply duct, the lower area of ​​the upper connecting port, the E section of the conversion duct, and the lower outlet of the conversion duct are sequentially connected to form the lower air outlet path.

[0017] Further optionally, a lower partition is provided at the lower connecting port, and the lower partition is provided with a third working position and a fourth working position;

[0018] When the lower partition is in the third working position, the lower partition closes the lower connecting port;

[0019] When the lower partition is in the fourth working position, the lower partition opens the lower connecting port, and the lower partition simultaneously separates the lower air supply duct, the lower connecting port and the conversion air duct.

[0020] The lower partition divides the lower air supply duct into an upper section and a lower section of the lower air supply duct that are arranged opposite each other, and the upper section and the lower section of the lower air supply duct are not connected.

[0021] The lower partition divides the lower connecting port into an upper section and a lower section of the lower connecting port that are arranged opposite each other, and the upper section and the lower section of the lower connecting port are not connected.

[0022] The lower partition divides the conversion air duct into conversion air duct segment F and conversion air duct segment G, which are arranged opposite each other, and the conversion air duct segment F and conversion air duct segment G are not connected.

[0023] The fan blade cavity outlet B, the upper section of the lower air supply duct, the upper area of ​​the lower connecting port, the F section of the conversion duct, and the upper outlet of the conversion duct are sequentially connected to form the upper air outlet path.

[0024] Further optionally, the plurality of the fan blade cavities are staggered in the vertical direction, and the fan blade cavities have fan blade cavity C inlets on both sides of the axial direction;

[0025] The centrifugal fan blades are double-suction centrifugal fan blades, and each fan blade cavity is provided with multiple centrifugal fan blades arranged side by side.

[0026] Further optionally, the air duct device is provided with a simultaneous air outlet from the top and bottom, an air outlet from the top, and an air outlet from the bottom;

[0027] When neither the upper air supply duct nor the lower air supply duct is connected to the conversion air duct, a portion of the air in the fan blade cavity can be discharged through the upper air supply duct and the upper outlet of the air supply duct, and another portion of the air in the fan blade cavity can be discharged through the lower air supply duct and the lower outlet of the air supply duct. The air duct device can operate in the mode of simultaneous upper and lower air supply.

[0028] When the air duct device forms the upper air outlet flow path, a portion of the air in the fan blade cavity can be discharged through the upper air supply duct and the upper outlet of the air supply duct, and another portion of the air in the fan blade cavity can be discharged through the upper air outlet flow path. The air duct device can operate in the upper air outlet mode.

[0029] When the air duct device forms the downward air outlet path, a portion of the air in the fan blade cavity can be discharged through the downward air supply duct and the lower outlet of the air supply duct, and another portion of the air in the fan blade cavity can be discharged through the downward air outlet path, and the air duct device can operate in the downward air outlet mode.

[0030] Further optionally, the air duct device further includes a housing, the housing including a rear panel, a front panel and a top plate connected between the rear panel and the front panel; a rear air inlet is formed at the lower end of the rear panel, a lower air outlet is formed at the lower end of the front panel, and an upper air inlet and an upper air outlet are formed on the top plate; an installation cavity is formed inside the housing.

[0031] The centrifugal air duct and the conversion air duct are arranged in the mounting cavity. The inlet of the fan blade cavity C is connected to the upper air inlet and the rear air inlet through the mounting cavity. The upper outlet of the air supply duct and the upper outlet of the conversion air duct are both connected to the upper air outlet. The lower outlet of the air supply duct and the lower outlet of the conversion air duct are both connected to the lower air outlet.

[0032] Optionally, an air guiding mechanism is provided at the upper air outlet, the air guiding mechanism including multiple rotatable air guiding plates, the multiple air guiding plates being arranged sequentially at intervals along the front-rear direction of the housing; the multiple air guiding plates can open or close the upper air outlet or adjust the air outlet direction of the upper air outlet;

[0033] The lower air outlet is provided with a lower air outlet grille, and there are multiple lower air outlet grilles; the multiple lower air outlet grilles are arranged at intervals along the vertical direction of the housing, and the air outlet direction of the lower air outlet can be adjusted by the multiple lower air outlet grilles.

[0034] Optionally, the air duct device further comprises an upper air outlet duct and a lower air outlet duct, wherein the upper outlet of the air supply duct and the upper outlet of the conversion duct are connected to the upper air outlet through the upper air outlet duct, and the lower outlet of the air supply duct and the lower outlet of the conversion duct are connected to the lower air outlet through the lower air outlet duct.

[0035] Further optionally, the air duct device includes a volute assembly and an air outlet frame assembly, the volute assembly including a volute and a volute cover, the volute and the volute cover being fastened together to form the centrifugal air duct and the conversion air duct;

[0036] The air outlet frame assembly includes an upper air outlet frame and a lower air outlet frame. The upper air outlet frame is disposed above the volute assembly and forms the upper air outlet duct. The lower air outlet frame is disposed below the volute assembly and forms the lower air outlet duct.

[0037] Further optionally, the centrifugal duct includes a first centrifugal duct and a second centrifugal duct, and the switching duct is disposed between the first centrifugal duct and the second centrifugal duct; an upper connecting port is formed between the upper air supply duct of the first centrifugal duct and the switching duct, and a lower connecting port is formed between the lower air supply duct of the second centrifugal duct and the switching duct; in the vertical direction of the duct device, the position of the fan blade cavity of the first centrifugal duct is lower than the position of the fan blade cavity of the second centrifugal duct;

[0038] When the upper partition is in the first working position and the lower partition is in the fourth working position, the upper air supply duct and the conversion duct of the first centrifugal air duct are not connected. The part of the lower air supply duct of the second centrifugal air duct between the corresponding fan blade cavity B outlet and the lower connecting port is connected with the part of the conversion duct between the lower connecting port and the upper air outlet of the conversion duct to form the upper air outlet flow path.

[0039] When the upper partition is in the second working position and the lower partition is in the third working position, the lower air supply duct and the conversion duct of the second centrifugal air duct are not connected. The portion of the upper air supply duct of the first centrifugal air duct between the outlet of the corresponding fan blade cavity A and the upper connecting port is connected with the portion of the conversion duct between the upper connecting port and the lower air outlet of the conversion duct to form the lower air outlet flow path.

[0040] Further optionally, a movable lower baffle is provided at the outlet B of the fan blade cavity of the first centrifugal air duct, and the lower baffle can be controlled to open or close the outlet B of the fan blade cavity of the first centrifugal air duct; a movable upper baffle is provided at the outlet A of the fan blade cavity of the second centrifugal air duct, and the upper baffle can be controlled to open or close the outlet A of the fan blade cavity of the second centrifugal air duct.

[0041] When the outlet B of the first centrifugal air duct and the outlet A of the second centrifugal air duct are both opened, the upper partition is in the first working position and the lower partition is in the third working position, a portion of the air in the first centrifugal air duct is discharged through the upper air supply duct of the first centrifugal air duct, and another portion of the air in the first centrifugal air duct is discharged through the lower air supply duct of the first centrifugal air duct. A portion of the air in the second centrifugal air duct is discharged through the upper air supply duct of the second centrifugal air duct, and another portion of the air in the second centrifugal air duct is discharged through the lower air supply duct of the second centrifugal air duct. Thus, the air duct device achieves simultaneous air output from the top and bottom.

[0042] When the outlet B of the first centrifugal air duct's blade cavity is closed, the outlet A of the second centrifugal air duct's blade cavity is opened, the upper partition is in the first working position, and the lower partition is in the fourth working position, the air in the first centrifugal air duct's blade cavity is discharged through the upper air supply duct of the first centrifugal air duct, a portion of the air in the second centrifugal air duct's blade cavity is discharged through the upper air supply duct of the second centrifugal air duct, and another portion of the air in the second centrifugal air duct's blade cavity is discharged through the upper air outlet path, thereby enabling the air duct device to achieve upper air outlet;

[0043] When the outlet B of the fan blade cavity of the first centrifugal air duct is opened, the outlet A of the fan blade cavity of the second centrifugal air duct is closed, the upper partition is in the second working position and the lower partition is in the third working position, a portion of the air in the fan blade cavity of the first centrifugal air duct is discharged through the lower air supply duct of the first centrifugal air duct, another portion of the air in the fan blade cavity of the first centrifugal air duct is discharged through the lower air outlet path, and the air in the fan blade cavity of the second centrifugal air duct is discharged through the lower air supply duct of the second centrifugal air duct, thereby enabling the air duct device to achieve downward air outlet.

[0044] According to a second aspect of the embodiments of this application, a cabinet air conditioner is provided, including an indoor unit, the indoor unit including the air duct device described in any of the above claims.

[0045] Using this embodiment, the output is large, the airflow is uniform, the cooling and heating effects are obvious, and the indoor air is comfortable. Attached Figure Description

[0046] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0047] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0048] Figure 1 This is a schematic diagram of the external structure of an embodiment of the volute assembly provided by the present invention;

[0049] Figure 2a A schematic diagram of the internal structure of an embodiment of the volute assembly provided by the present invention in the air outlet mode during operation;

[0050] Figure 2b A schematic diagram of the internal structure of an embodiment of the volute assembly provided by the present invention in the air outlet mode during operation;

[0051] Figure 3 A schematic diagram of the structure of an embodiment of the centrifugal fan provided by the present invention;

[0052] Figure 4 This is an exploded structural diagram of an indoor unit embodiment provided by the present invention;

[0053] Figure 5a A schematic diagram of the external structure of an embodiment of the indoor unit provided by the present invention when it is operating in the mode of simultaneously discharging air from the top and bottom;

[0054] Figure 5b for Figure 5a Sectional view at HH;

[0055] Figure 6a A schematic diagram of the external structure of an embodiment of the indoor unit provided by the present invention when it is operating in the air outlet mode;

[0056] Figure 6b for Figure 6a Sectional view at point II;

[0057] Figure 7a A schematic diagram of the external structure of an embodiment of the indoor unit provided by the present invention when it is in operation and is discharging air.

[0058] Figure 7b for Figure 7a Sectional view at point JJ;

[0059] In the picture:

[0060] 1-Volume assembly; 111-Volume; 112-Volume cover; 121-First centrifugal air duct; 122-Second centrifugal air duct; 13-Upper air supply duct; 131-Upper outlet of air supply duct; 132-Upper section of upper air supply duct; 133-Lower section of upper air supply duct; 14-Lower air supply duct; 141-Lower outlet of air supply duct; 142-Upper section of lower air supply duct; 143-Lower section of lower air supply duct; 15-Ice blade cavity; 151-Outlet A of ice blade cavity; 152-Outlet B of ice blade cavity; 153-Inlet C of ice blade cavity; 161-Centrifugal fan blade; 162- Fan motor; 17-Converter duct; 171-Converter duct upper outlet; 172-Converter duct lower outlet; 173-Converter duct section D; 174-Converter duct section E; 175-Converter duct section F; 176-Converter duct section G; 181-Upper connecting port; 1811-Upper connecting port upper area; 1812-Upper connecting port lower area; 182-Lower connecting port; 1821-Lower connecting port upper area; 1822-Lower connecting port lower area; 183-Upper partition; 184-Lower partition; 191-Upper baffle; 192-Lower baffle;

[0061] 21-Upper air outlet frame; 211-Upper air outlet duct; 22-Lower air outlet frame; 221-Lower air outlet duct;

[0062] 3-Casing; 31-Front panel; 311-Lower air outlet; 32-Rear panel; 321-Rear air inlet; 33-Left side panel; 34-Right side panel; 35-Top panel; 351-Upper air outlet; 352-Upper air inlet; 36-Chassis;

[0063] 41-Air guide plate; 421-Upper air inlet grille; 422-Rear air inlet grille; 43-Lower air outlet grille; 44-Indoor heat exchanger. Detailed Implementation

[0064] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0065] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” used in the embodiments of this invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. “Multiple” generally includes at least two, but does not exclude the inclusion of at least one.

[0066] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0067] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0068] It should be noted that the names A outlet, B outlet, and C inlet of the fan blade cavity are used to distinguish different air outlets in the fan blade cavity, and are not intended to limit the structure and function of the air outlets in the fan blade cavity; similarly, the names D section, E section, F section, and G section of the switching duct are used to distinguish different sections of the switching duct under different conditions, and are not intended to limit the structure and function of the switching duct.

[0069] In existing ventilation equipment, when using a single centrifugal duct for air supply, if upward air supply is required, the lower outlet of the fan blade cavity is closed, and the air inside the fan blade cavity is discharged through the upper air supply duct; if downward air supply is required, the upper outlet of the fan blade cavity is closed, and the air inside the fan blade cavity is discharged through the lower air supply duct. However, this solution has a small air volume, low air supply efficiency, and large air supply pressure loss. When using dual centrifugal ducts for air supply, the cooperation of the two centrifugal ducts is required to achieve a large air volume for upward or downward air supply; however, this solution has a complex structure, poor air supply consistency, and uneven air volume.

[0070] This invention creatively provides an air duct device, including a conversion air duct and a centrifugal air duct, which are arranged side by side and multiple centrifugal air ducts are provided. Each centrifugal air duct includes an upper air supply duct, a fan blade cavity, and a lower air supply duct arranged sequentially from top to bottom. The upper air supply duct and the fan blade cavity are connected through the fan blade cavity outlet A, and the lower air supply duct and the fan blade cavity are connected through the fan blade cavity outlet B. An upper connecting port is formed between the upper air supply duct and the conversion air duct. When the upper connecting port is closed, the upper air supply duct and the conversion air duct are not connected. When the upper connecting port is open, the air duct device can form a lower air outlet path. Alternatively, a lower connecting port is formed between the lower air supply duct and the conversion air duct. When the lower connecting port is closed, the lower air supply duct and the conversion air duct are not connected. When the lower connecting port is open, the air duct device can form an upper air outlet path.

[0071] When neither the upper nor lower air supply duct is connected to the conversion air duct, the upper and lower air supply ducts can supply air simultaneously; when the air duct device forms an upper air outlet flow path, the upper air supply duct and the upper air outlet flow path can supply air simultaneously; when the air duct device forms a lower air outlet flow path, the lower air supply duct and the lower air outlet flow path can supply air simultaneously; the structure is simple, with a large air volume, high air outlet efficiency, and uniform air outlet.

[0072] Example 1

[0073] like Figures 1 to 3 As shown, this embodiment provides an air duct device for cabinet-type air handling equipment, especially for cabinet-type air conditioners, wherein the height direction of the cabinet-type air handling equipment is vertical; the air duct device forms a centrifugal air duct and a conversion air duct 17, which are arranged side by side and multiple centrifugal air ducts are provided; specifically, the centrifugal air ducts and the conversion air ducts 17 are arranged side by side on a horizontal plane, and both the centrifugal air ducts and the conversion air ducts 17 extend in the vertical direction;

[0074] Each centrifugal air duct includes, from top to bottom, an upper air supply duct 13, a fan blade cavity 15, and a lower air supply duct 14. A centrifugal fan blade 161 is installed inside the fan blade cavity 15. The centrifugal fan blade 161 is driven by a fan blade motor 162. The fan blade motor 162, when running, drives the centrifugal fan blade 161 to rotate. The fan blade cavity 15 has a fan blade cavity outlet A 151 formed on its radially upper side and a fan blade cavity outlet B 152 formed on its radially lower side. The fan blade cavity 15 has a fan blade cavity inlet C 153 formed on its axial side. 151. Both the outlet 152 of the fan blade cavity B and the inlet 153 of the fan blade cavity C are connected to the fan blade cavity 15; the lower end of the upper air supply duct 13 is connected to the outlet 151 of the fan blade cavity A, and the upper end of the upper air supply duct 13 forms an upper air supply duct outlet 131; the upper end of the lower air supply duct 14 is connected to the outlet 152 of the fan blade cavity B, and the lower end of the lower air supply duct 14 forms a lower air supply duct outlet 141; the upper end of the conversion air duct 17 forms a conversion air duct upper outlet 171, and the lower end of the conversion air duct 17 forms a conversion air duct lower outlet 172.

[0075] In the same centrifugal air duct, an upper connection port 181 is formed between the upper air supply duct 13 and the conversion air duct 17. The upper connection port 181 can be controlled to be opened or closed.

[0076] When the upper connection port 181 is closed, the upper air supply duct 13 and the conversion air duct 17 are not connected;

[0077] When the upper connecting port 181 is opened, the upper air supply duct 13 and the conversion duct form a downward airflow path between the fan blade cavity A outlet 151 and the conversion duct lower outlet 172. That is, the portion of the upper air supply duct 13 between the fan blade cavity A outlet 151 and the upper connecting port 181 connects with the portion of the conversion duct 17 between the upper connecting port 181 and the conversion duct lower outlet 172 to form a downward airflow path; or,

[0078] A lower connecting port 182 is formed between the lower air supply duct 14 and the conversion air duct 17, and the lower connecting port 182 can be controlled to be opened or closed.

[0079] When the lower connection port 182 is controlled to be closed, the lower air supply duct 14 and the conversion air duct 17 are not connected;

[0080] When the lower connecting port 182 is opened, the lower air supply duct 14 and the conversion duct form an upward airflow path between the fan blade cavity B outlet 152 and the upper outlet 171 of the conversion duct. That is, the part of the lower air supply duct 14 between the fan blade cavity B outlet 152 and the lower connecting port 182 is connected to the part of the conversion duct 17 between the lower connecting port 182 and the upper outlet 171 of the conversion duct to form an upward airflow path.

[0081] In the plurality of centrifugal air ducts, at least one upper air supply duct 13 and the conversion air duct 17 are connected by an upper connection 181, and at least one lower air supply duct 14 and the conversion air duct 17 are connected by a lower connection 182.

[0082] When neither the upper air supply duct 13 nor the lower air supply duct 14 is connected to the conversion air duct 17, a portion of the air in the fan blade cavity 15 can be discharged through the upper air supply duct 13 and the upper outlet 131 of the air supply duct, and another portion of the air in the fan blade cavity 15 can be discharged through the lower air supply duct 14 and the lower outlet 141 of the air supply duct. The air duct device can realize simultaneous upper and lower air outlets; realize multi-channel upper and lower air outlets, and improve the air volume.

[0083] When the air duct device forms an upward air outlet path, a portion of the air in the fan blade cavity 15 can be discharged through the upward air supply duct 13 and the upper outlet 131 of the air supply duct, and another portion of the air in the fan blade cavity 15 can be discharged through the upward air outlet path, so the air duct device can achieve upward air outlet; with the help of the conversion air duct 17, multi-channel upward air outlet is achieved, which increases the air volume.

[0084] When the air duct device forms a downward air outlet path, a portion of the air in the fan blade cavity 15 can be discharged through the downward air supply duct 14 and the lower outlet 141 of the air supply duct, and another portion of the air in the fan blade cavity 15 can be discharged through the downward air outlet path. The air duct device can achieve downward air outlet. With the help of the conversion air duct 17, multi-channel downward air outlet is achieved, which increases the air volume.

[0085] In summary, by connecting or disconnecting the upper air supply duct 13, the lower air supply duct 14, and the conversion air duct 17, air can be discharged from different directions. The structure is simple, the air discharge efficiency is high, and the air discharge is uniform. This solves the problems of small air volume and low air discharge efficiency when using a single centrifugal air duct in existing ventilation equipment, as well as the complex structure and uneven air volume when using a double centrifugal air duct.

[0086] Example 2

[0087] like Figures 1 to 3 As shown, based on Embodiment 1, this embodiment proposes that the upper connecting port 181 and the lower connecting port 182 are arranged vertically opposite each other, and the upper partition 183 and the lower partition 184 are arranged vertically opposite each other; an upper partition 183 is provided at the upper connecting port 181; the upper partition 183 is provided with a first working position and a second working position; when the upper partition 183 is in the first working position, the upper partition 183 closes the upper connecting port 181, and when the upper partition 183 is in the second working position, the upper partition 183 opens the upper connecting port 181;

[0088] The upper partition 183 is rotatably disposed at the upper connecting port 181, and the pivot of the upper partition 183 is located between the upper edge and the lower edge of the upper connecting port 181; the lower partition 184 is rotatably disposed at the lower connecting port 182, and the pivot of the lower partition 184 is located between the upper edge and the lower edge of the lower connecting port 182.

[0089] When the upper partition 183 is in the second working position, a part of the upper partition 183 is located in the upper air supply duct 13 and separates the upper air supply duct 13; another part of the upper partition 183 is located in the conversion air duct 17 and separates the conversion air duct 17; at the same time, the upper partition 183 also separates the upper connecting port 181.

[0090] The upper partition 183 divides the upper air supply duct 13 into an upper section 132 and a lower section 133 of the upper air supply duct, which are arranged opposite each other and are not connected. The upper end of the upper section 132 forms the upper outlet 131 of the air supply duct, and the lower end of the lower section 133 of the upper air supply duct is connected to the outlet 151 of the fan blade cavity A.

[0091] The upper partition 183 divides the upper connecting port 181 into an upper connecting port upper area 1811 and an upper connecting port lower area 1812 that are arranged opposite to each other, and the upper connecting port upper area 1811 and the upper connecting port lower area 1812 are not connected.

[0092] The upper partition 183 divides the conversion air duct 17 into conversion air duct section D 173 and conversion air duct section E 174, which are arranged opposite each other and are not connected. The upper end of conversion air duct section D 173 forms the upper outlet 171 of the conversion air duct, and the lower end of conversion air duct section E 174 forms the lower outlet 172 of the conversion air duct.

[0093] The fan blade cavity A outlet 151, the lower section of the upper air supply duct 133, the lower area of ​​the upper connecting port 1812, the E section of the conversion air duct 174 and the lower outlet of the conversion air duct 172 are connected in sequence to form a lower air outlet path; the upper section of the upper air supply duct 132 and the D section of the conversion air duct 173 are connected through the upper area of ​​the upper connecting port 1811.

[0094] In this way, both the downward air supply duct 14 and the downward air outlet path can supply air, achieving a large volume of air supply downwards.

[0095] A lower partition 184 is provided at the lower connecting port 182; the lower partition 184 has a third working position and a fourth working position; when the lower partition 184 is in the third working position, the lower partition 184 closes the lower connecting port 182; when the lower partition 184 is in the fourth working position, the lower partition 184 opens the lower connecting port 182.

[0096] When the lower partition 184 is in the fourth working position, a part of the lower partition 184 is located in the lower air supply duct 14 and separates the lower air supply duct 14; another part of the lower partition 184 is located in the conversion air duct 17 and separates the conversion air duct 17; at the same time, the lower partition 184 also separates the lower connecting port 182.

[0097] The lower partition 184 divides the lower air supply duct 14 into an upper section 142 and a lower section 143 of the lower air supply duct, which are arranged opposite each other and are not connected. The upper end of the upper section 142 of the lower air supply duct is connected to the outlet 152 of the fan blade cavity B, and the lower end of the lower section 143 of the lower air supply duct forms a lower air supply outlet 141.

[0098] The lower partition 184 divides the lower connecting port 182 into an upper lower connecting port area 1821 and a lower lower connecting port area 1822 that are arranged opposite to each other, and the upper lower connecting port area 1821 and the lower lower connecting port area 1822 are not connected.

[0099] The lower partition 184 divides the conversion air duct 17 into conversion air duct section F 175 and conversion air duct section G 176, which are arranged opposite each other and are not connected; conversion air duct section F 175 has an upper outlet 171 at the upper end and conversion air duct section G 176 has a lower outlet 172 at the lower end.

[0100] The fan blade cavity outlet B 152, the upper section of the lower air supply duct 142, the upper area of ​​the lower connecting port 1821, the conversion air duct section F 175 and the upper outlet of the conversion air duct 171 are connected in sequence to form the upper air outlet path; the lower section of the lower air supply duct 143 and the conversion air duct section G 176 are connected through the upper area of ​​the lower connecting port 1821.

[0101] Furthermore, multiple fan blade chambers 15 are staggered in the vertical direction, and fan blade chambers 15 have fan blade chamber C inlets 153 on both sides of the axial direction; when the centrifugal fan blade 161 rotates, the air can enter the fan blade chamber 15 through the fan blade chamber C inlets 153 on both sides of the axial direction; this improves the air intake efficiency of the fan blade chamber 15 and increases the air supply volume, resulting in good heating and cooling effects when applied to cabinet air conditioners;

[0102] The centrifugal fan blade 161 is a double-suction centrifugal fan blade 161, and multiple centrifugal fan blades 161 are arranged side by side in each fan blade cavity 15; preferably, two centrifugal fan blades 161 are arranged side by side in each fan blade cavity 15.

[0103] This embodiment also proposes that the air duct device has a simultaneous air outlet mode, an air outlet mode, and a lower air outlet mode;

[0104] When neither the upper air supply duct 13 nor the lower air supply duct 14 is connected to the conversion air duct 17, a portion of the air in the fan blade cavity 15 can be discharged through the upper air supply duct 13 and the upper outlet 131 of the air supply duct, and another portion of the air in the fan blade cavity 15 can be discharged through the lower air supply duct 14 and the lower outlet 141 of the air supply duct. The air duct device can operate in a mode of simultaneous upper and lower air supply.

[0105] When the air duct device forms an upward air outlet path, a portion of the air in the fan blade cavity 15 can be discharged through the upward air supply duct 13 and the upper outlet 131 of the air supply duct, and another portion of the air in the fan blade cavity 15 can be discharged through the upward air outlet path. The air duct device can operate in the upward air outlet mode, which increases the air volume and maintains the consistency of the air outlet.

[0106] When the air duct device forms a downward air outlet path, a portion of the air in the fan blade cavity 15 can be discharged through the downward air supply duct 14 and the lower outlet 141 of the air supply duct, while another portion of the air in the fan blade cavity 15 can be discharged through the downward air outlet path. The air duct device can operate in the downward air outlet mode, which increases the air volume and maintains the consistency of the air outlet.

[0107] This embodiment also proposes that the air duct device further includes a housing 3, which includes a left side plate 33, a right side plate 34, a front panel 31, a rear panel 32, a top plate 35, and a chassis 36. The left side plate 33 and the right side plate 34 are arranged opposite each other horizontally, the front panel 31 and the rear panel 32 are arranged opposite each other front to back, and the top plate 35 and the chassis 36 are arranged vertically opposite each other. The left side plate 33, the rear panel 32, the right side plate 34, and the front panel 31 are sequentially connected in the horizontal direction to form the main body of the housing. The top plate 35 is located on the top of the main body of the housing and is attached to the main body of the housing. The chassis 36 is located at the bottom of the main body of the housing and connected to the main body of the housing; the lower end of the rear panel 32 forms a rear air inlet 321 or a rear air inlet 321 is formed between the lower end of the rear panel 32 and the chassis 36; the lower end of the front panel 31 forms a lower air outlet 311; the top plate 35 forms an upper air inlet 352 and an upper air outlet 351, with the upper air inlet 352 located behind the upper air outlet 351; the interior of the housing 3 forms an installation cavity, specifically, the main body of the housing, the top plate 35 and the chassis 36 surround the installation cavity;

[0108] Centrifugal air duct and conversion air duct 17 are installed in the mounting cavity. The inlet 153 of the fan blade cavity C is connected to the upper air inlet 352 and the rear air inlet 321 through the mounting cavity. The upper outlet 131 of the air supply duct and the upper outlet 171 of the conversion air duct are connected to the upper air outlet 351. The lower outlet 141 of the air supply duct and the lower outlet 172 of the conversion air duct are connected to the lower air outlet 311.

[0109] Air in the upper air supply duct 13 can be discharged through the upper outlet 131 and the upper air outlet 351 of the air supply duct, and air in the lower air supply duct 14 can be discharged through the lower outlet 141 and the lower air outlet 311 of the air supply duct.

[0110] When the upper partition 183 is in the second working position, the air in the lower air outlet path can be discharged through the lower outlet 172 and the lower air outlet 311 of the conversion air duct; when the lower partition 184 is in the fourth working position, the air in the upper air outlet path can be discharged through the upper outlet 171 and the upper air outlet 351 of the conversion air duct.

[0111] Furthermore, an air guiding mechanism is provided at the upper air outlet 351. The air guiding mechanism includes multiple rotatable air guiding plates 41, which are arranged sequentially and spaced apart along the front-back direction of the housing 3. The length direction of each air guiding plate 41 is consistent with the left-right direction of the housing 3. The multiple air guiding plates 41 can open or close the upper air outlet 351 or adjust the air outlet direction of the upper air outlet 351. When the multiple air guiding plates 41 close the upper air outlet 351, dust can be prevented from entering the interior of the housing 3 through the upper air outlet 351, thus improving the aesthetics. By controlling the rotation of the multiple air guiding plates 41, the air outlet direction of the upper air outlet 351 can be adjusted to achieve air delivery at different angles and meet different air delivery needs.

[0112] An upper air inlet grille 421 is provided at the upper air inlet 352, and multiple upper air inlet grilles 421 are provided; multiple upper air inlet grilles 421 are arranged sequentially at intervals along the front and rear direction of the housing 3, and multiple upper air inlet grilles 421 can open or close the upper air inlet 352, or adjust the air intake direction of the upper air inlet 352.

[0113] A rear air intake grille 422 is provided at the rear air intake 321, and there are multiple rear air intake grilles 422; the multiple rear air intake grilles 422 are arranged sequentially at intervals along the front and rear direction of the housing 3, and the multiple rear air intake grilles 422 can open or close the rear air intake 321, or adjust the air intake direction of the rear air intake 321.

[0114] A lower air outlet 311 is provided with a lower air outlet grille 43, and there are multiple lower air outlet grilles 43; the multiple lower air outlet grilles 43 are arranged sequentially at intervals along the vertical direction of the housing 3, and the multiple lower air outlet grilles 43 can adjust the air outlet direction of the lower air outlet 311.

[0115] This embodiment also proposes that the air duct device further forms an upper air outlet duct 211 and a lower air outlet 221. The upper outlet 131 of the air supply duct and the upper outlet 171 of the conversion air duct are connected to the upper air outlet 351 through the upper air outlet 211, and the lower outlet 141 of the air supply duct and the lower outlet 172 of the conversion air duct are connected to the lower air outlet 311 through the lower air outlet 221.

[0116] Air in the upper air supply duct 13 can be discharged through the upper outlet 131, the upper air outlet 211 and the upper air outlet 351, and air in the lower air supply duct 14 can be discharged through the lower outlet 141, the lower air outlet 221 and the lower air outlet 311.

[0117] When the upper partition 183 is in the second working position, the air in the lower air outlet path can be discharged through the lower outlet 172 of the conversion air duct, the lower air outlet 221 and the lower air outlet 311; when the lower partition 184 is in the fourth working position, the air in the upper air outlet path can be discharged through the upper outlet 171 of the conversion air duct, the upper air outlet 211 and the upper air outlet 351.

[0118] Furthermore, the air duct device includes a volute assembly 1 and an air outlet frame assembly. The volute assembly 1 includes a volute 111 and a volute cover 112. The volute 111 and the volute cover 112 are fastened together to form a centrifugal air duct and a conversion air duct 17. This improves the installation efficiency of the air duct device and avoids abnormal assembly noise.

[0119] The air outlet frame assembly includes an upper air outlet frame 21 and a lower air outlet frame 22. The upper air outlet frame 21 is disposed above the volute assembly 1 and forms an upper air outlet duct 211, while the lower air outlet frame 22 is disposed below the volute assembly 1 and forms a lower air outlet duct 221.

[0120] In summary, when the upper partition 183 is in the first working position and the lower partition 184 is in the third working position, neither the upper air supply duct 13 nor the lower air supply duct 14 is connected to the conversion duct 17. At this time, the duct device can operate in a simultaneous upper and lower air supply mode. When the upper partition 183 is in the first working position and the lower partition 184 is in the fourth working position, the upper air supply duct 13 is not connected to the conversion duct 17, but the lower air supply duct 14 is connected to the conversion duct 17. At this time, the duct device can operate in an upper air supply mode. When the upper partition 183 is in the second working position and the lower partition 184 is in the third working position, the lower air supply duct 14 is connected to the conversion duct 17, and the upper air supply duct 13 is connected to the conversion duct 17. At this time, the duct device can operate in a lower air supply mode.

[0121] It can achieve multiple air outlet modes, with large air volume, high air outlet efficiency and uniform air outlet.

[0122] Example 3

[0123] like Figures 1 to 3 As shown, based on Embodiment 2, the centrifugal air duct includes a first centrifugal air duct 121 and a second centrifugal air duct 122, which are arranged opposite to each other along the left and right directions of the housing 3; a conversion air duct 17 is arranged between the first centrifugal air duct 121 and the second centrifugal air duct 122; an upper connecting port 181 is formed between the upper air supply duct 13 of the first centrifugal air duct 121 and the conversion air duct 17, and a lower connecting port 182 is formed between the lower air supply duct 14 of the second centrifugal air duct 122 and the conversion air duct 17; in the vertical direction of the air duct device, the position of the fan blade cavity 15 of the first centrifugal air duct 121 is lower than the position of the fan blade cavity 15 of the second centrifugal air duct 122.

[0124] When the upper partition 183 is in the first working position and the lower partition 184 is in the fourth working position, the upper air supply duct 13 and the conversion duct 17 of the first centrifugal air duct 121 are not connected. The part of the lower air supply duct 14 of the second centrifugal air duct 122 between the corresponding fan blade cavity B outlet 152 and the lower connecting port 182 is connected with the part of the conversion duct 17 between the lower connecting port 182 and the upper outlet 171 of the conversion duct to form an upper air outlet flow path.

[0125] When the upper partition 183 is in the second working position and the lower partition 184 is in the third working position, the lower air supply duct 14 and the conversion duct 17 of the second centrifugal air duct 122 are not connected. The part of the upper air supply duct 13 of the first centrifugal air duct 121 between the corresponding fan blade cavity A outlet 151 and the upper connecting port 181 is connected with the part of the conversion duct 17 between the upper connecting port 181 and the lower outlet 172 of the conversion duct to form a lower air outlet path.

[0126] Furthermore, a movable lower baffle 192 is provided at the outlet 152 of the fan blade cavity B of the first centrifugal air duct 121, and the lower baffle 192 can be controlled to open or close the outlet 152 of the fan blade cavity B of the first centrifugal air duct 121; a movable upper baffle 191 is provided at the outlet 151 of the fan blade cavity A of the second centrifugal air duct 122, and the upper baffle 191 can be controlled to open or close the outlet 151 of the fan blade cavity A of the second centrifugal air duct 122.

[0127] When the outlet 152 of the fan blade cavity B of the first centrifugal air duct 121 and the outlet 151 of the fan blade cavity A of the second centrifugal air duct 122 are both opened, the upper partition 183 is in the first working position and the lower partition 184 is in the third working position, a portion of the air in the fan blade cavity 15 of the first centrifugal air duct 121 is discharged through the upper air supply duct 13 of the first centrifugal air duct 121, and another portion of the air in the fan blade cavity 15 of the first centrifugal air duct 121 is discharged through the lower air supply duct 14 of the first centrifugal air duct 121. A portion of the air in the fan blade cavity 15 of the second centrifugal air duct 122 is discharged through the upper air supply duct 13 of the second centrifugal air duct 122, and another portion of the air in the fan blade cavity 15 of the second centrifugal air duct 122 is discharged through the lower air supply duct 14 of the second centrifugal air duct 122, thereby achieving simultaneous air outlet from the top and bottom of the air duct device.

[0128] Specifically, the air in the upper air supply duct 13 of the first centrifugal air duct 121 can be discharged through the corresponding upper air supply outlet 131, upper air outlet 211 and upper air outlet 351, and the air in the lower air supply duct 14 of the first centrifugal air duct 121 can be discharged through the corresponding lower air supply outlet 141, lower air outlet 221 and lower air outlet 311.

[0129] The air in the upper air supply duct 13 of the second centrifugal air duct 122 can be discharged through the corresponding upper air supply outlet 131, upper air outlet 211 and upper air outlet 351, and the air in the lower air supply duct 14 of the second centrifugal air duct 122 can be discharged through the corresponding lower air supply outlet 141, lower air outlet 221 and lower air outlet 311.

[0130] When the outlet 152 of the fan blade cavity B of the first centrifugal air duct 121 is closed, the outlet 151 of the fan blade cavity A of the second centrifugal air duct 122 is opened, the upper partition 183 is in the first working position and the lower partition 184 is in the fourth working position, the air in the fan blade cavity 15 of the first centrifugal air duct 121 is discharged through the upper air supply duct 13 of the first centrifugal air duct 121, a part of the air in the fan blade cavity 15 of the second centrifugal air duct 122 is discharged through the upper air supply duct 13 of the second centrifugal air duct 122, and another part of the air in the fan blade cavity 15 of the second centrifugal air duct 122 is discharged through the upper air outlet path, so that the air duct device can achieve upper air outlet;

[0131] Specifically, the air in the upper air supply duct 13 of the first centrifugal air duct 121 can be discharged through the corresponding upper air outlet 131, upper air outlet 211 and upper air outlet 351; the air in the upper air supply duct 13 of the second centrifugal air duct 122 can be discharged through the corresponding upper air outlet 131, upper air outlet 211 and upper air outlet 351; the air in the upper air outlet flow path can be discharged through the corresponding upper outlet 171, upper air outlet 211 and upper air outlet 351 of the conversion air duct.

[0132] When the outlet 152 of the fan blade cavity B of the first centrifugal air duct 121 is opened, the outlet 151 of the fan blade cavity A of the second centrifugal air duct 122 is closed, the upper partition 183 is in the second working position and the lower partition 184 is in the third working position, a portion of the air in the fan blade cavity 15 of the first centrifugal air duct 121 is discharged through the lower air supply duct 14 of the first centrifugal air duct 121, and another portion of the air in the fan blade cavity 15 of the first centrifugal air duct 121 is discharged through the lower air outlet path, and the air in the fan blade cavity 15 of the second centrifugal air duct 122 is discharged through the lower air supply duct 14 of the second centrifugal air duct 122, thereby enabling the air duct device to achieve downward air outlet.

[0133] Specifically, the air in the lower air supply duct 14 of the first centrifugal air duct 121 can be discharged through the corresponding lower air supply duct outlet 141, lower air outlet 221 and lower air outlet 311; the air in the lower air supply duct 14 of the second centrifugal air duct 122 can be discharged through the corresponding lower air supply duct outlet 141, lower air outlet 221 and lower air outlet 311; the air in the lower air outlet path can be discharged through the corresponding lower outlet 172, lower air outlet 221 and lower air outlet 311 of the conversion air duct.

[0134] In summary, when the upper partition 183 is in the first working position and the lower partition 184 is in the third working position, neither the upper air supply duct 13 nor the lower air supply duct 14 of the two centrifugal air ducts are connected to the conversion air duct 17. At this time, the air duct device can operate in a simultaneous upper and lower air supply mode. When the upper partition 183 is in the first working position and the lower partition 184 is in the fourth working position, the upper air supply duct 13 of the first centrifugal air duct 121 is not connected to the conversion air duct 17, and the fan blade cavity B outlet 152 of the first centrifugal air duct 121 is closed. The upper air supply duct 13 of the second centrifugal air duct 122 is connected to the conversion air duct 17. When the air exchange duct 17 is not connected, an upward airflow path is formed between the fan blade cavity B outlet 152 of the second centrifugal air duct 122 and the upper outlet 171 of the conversion air duct. At this time, the air duct device can operate in the upward airflow mode. When the upper partition 183 is in the second working position and the lower partition 184 is in the third working position, the lower air supply duct 14 of the first centrifugal air duct 121 is not connected to the conversion air duct 17. The fan blade cavity A outlet 151 of the first centrifugal air duct 121 and the lower outlet 172 of the conversion air duct are connected to form a downward airflow path. At this time, the air duct device can operate in the downward airflow mode.

[0135] It can achieve multiple air outlet modes, with large air volume, high air outlet efficiency and uniform air outlet.

[0136] Example 4

[0137] Unlike embodiment 3, a lower connecting port 182 is formed between the lower air supply duct 14 and the conversion air duct 17 of the first centrifugal air duct 121, and an upper connecting port 181 is formed between the upper air supply duct 13 and the conversion air duct 17 of the second centrifugal air duct 122.

[0138] When the upper partition 183 is in the first working position and the lower partition 184 is in the third working position, the upper air supply duct 13 and the lower air supply duct 14 of the two centrifugal air ducts are not connected to the conversion air duct 17. At this time, the air duct device can operate in the mode of simultaneous air supply from the upper and lower parts.

[0139] When the upper partition 183 is in the second working position and the lower partition 184 is in the third working position, the upper air supply duct 13 and the conversion duct 17 of the second centrifugal air duct 122 are not connected. The lower air supply duct 14 of the first centrifugal air duct 121 is connected to the part between the corresponding fan blade cavity B outlet 152 and the lower connecting port 182 and the part between the lower connecting port 182 and the upper outlet 171 of the conversion duct to form an upper air outlet flow path. At this time, the air duct device can operate in the upper air outlet mode.

[0140] When the upper partition 183 is in the first working position and the lower partition 184 is in the fourth working position, the lower air supply duct 14 and the conversion duct 17 of the first centrifugal air duct 121 are not connected. The part of the upper air supply duct 13 of the second centrifugal air duct 122 between the corresponding fan blade cavity A outlet 151 and the upper connecting port 181 is connected with the part of the conversion duct 17 between the upper connecting port 181 and the lower outlet 172 of the conversion duct to form a lower air outlet flow path. At this time, the air duct device can operate in the lower air outlet mode.

[0141] It can achieve multiple air outlet modes, with large air volume, high air outlet efficiency and uniform air outlet.

[0142] Example 5

[0143] like Figures 4 to 7b As shown, this embodiment provides a cabinet air conditioner, including an indoor unit, which includes an air duct device according to any one of embodiments 2 to 4; an indoor heat exchanger 44 is provided between the rear panel 32 and the fan blade cavity C inlet 153 and the upper air inlet 352 and the fan blade cavity C inlet 153.

[0144] When the fan blades rotate, a portion of the indoor air enters the mounting cavity through the rear air inlet 321, and another portion of the indoor air enters the mounting cavity through the upper air inlet 352. When the air in the mounting cavity flows through the indoor heat exchanger 44, it completes heat exchange with the indoor heat exchanger 44, and then enters the fan blade cavity 15 through the fan blade cavity C inlet 153.

[0145] In summary, when the cabinet air conditioner is operating in air supply mode, the upper partition 183 can be in the first working position and the lower partition 184 can be in the third working position, allowing the indoor unit to operate with simultaneous upper and lower air outlets; when the cabinet air conditioner is operating in cooling mode, the upper partition 183 can be in the second working position and the lower partition 184 can be in the third working position, allowing the indoor unit to operate with upper air outlets; when the cabinet air conditioner is operating in heating mode, the upper partition 183 can be in the first working position and the lower partition 184 can be in the fourth working position, allowing the indoor unit to operate with lower air outlets.

[0146] It features high output, uniform air distribution, and significant cooling and heating effects, ensuring comfortable indoor air and solving the problems of low air volume, uneven air distribution, and poor cooling and heating effects in existing cabinet air conditioners with top or bottom air outlets.

[0147] Example 6

[0148] like Figures 4 to 7bAs shown, based on embodiments 1 to 3 and embodiment 5, the left side panel 33 is disposed on the rear panel 32 and serves a decorative purpose; the right side panel 34 is disposed on the air inlet panel and serves a decorative purpose; the front panel 31 is connected between the left side panel 33 and the right side panel 34 and serves a decorative purpose, and a lower air outlet 311 is formed at the lower end of the front panel 31; the rear panel 32 is located at the rear of the main body of the casing and serves to support the entire casing 3; the chassis 36 is disposed at the bottom of the main body of the casing and serves a supporting purpose; the top panel 35 is disposed at the top of the main body of the casing and can form an upper air inlet 352 and an upper air outlet 351, serving a sealing purpose;

[0149] The volute 111 is mounted on the rear panel 32 and can be used to install the fan motor 162; the volute cover 112 is fixed on the rear panel 32, and the volute cover 112 and the volute 111 cooperate to form a centrifugal air duct and a conversion air duct 17; the centrifugal fan blade 161 is mounted in the fan blade cavity 15, and the fan motor 162 is fixed on the volute 111. When the fan motor 162 runs, it can drive the centrifugal fan blade 161 to rotate, and then air can enter the fan blade cavity 15 through the fan blade cavity C inlet 153;

[0150] An upper partition 183 is rotatably mounted at the upper connecting port 181. The upper partition 183 is connected to a motor, and when the motor operates, it rotates the upper partition 183, thereby controlling the connection or disconnection of the upper air supply duct 13 and the conversion duct 17. A lower partition 184 is rotatably mounted at the lower connecting port 182. The lower partition 184 is connected to a motor, and when the motor operates, it rotates the lower partition 184, thereby controlling the connection or disconnection of the lower air supply duct 14 and the conversion duct 17. The upper baffle 191 is rotatably disposed at the outlet 151 of the fan blade cavity A. The upper baffle 191 and the upper baffle 191 motor are connected. When the motor of the upper baffle 191 is running, it can drive the upper baffle 191 to rotate, thereby controlling the opening or closing of the outlet 151 of the fan blade cavity A. The lower baffle 192 is rotatably disposed at the outlet 152 of the fan blade cavity B. The lower baffle 192 and the lower baffle 192 motor are connected. When the motor of the lower baffle 192 is running, it can drive the lower baffle 192 to rotate, thereby controlling the opening or closing of the outlet 152 of the fan blade cavity B.

[0151] The air guiding mechanism is set on the upper air outlet frame 21 and close to the upper air outlet 351. The air guiding mechanism includes an air guide plate 41 and an air guiding motor. The air guiding motor and the air guide plate 41 are drivenly connected. Multiple air guide plates 41 are provided. Multiple air guide plates 41 can be controlled to rotate to open the upper air outlet 351 or adjust the air outlet direction of the upper air outlet 351.

[0152] The upper air outlet frame 21 is set on the top of the volute assembly 1 and fixed on the rear panel 32. The upper air outlet frame 21 forms an upper air outlet duct 211, which is sealed to the upper air supply duct 13 and the conversion duct 17. The lower air outlet frame 22 is set at the bottom of the volute assembly 1 and forms a lower air outlet duct 221, which is sealed to the lower air supply duct 14 and the conversion duct 17. The lower air outlet duct 221 serves as a guide, which can guide the air in the lower air supply duct 14 to the lower air outlet 311 and the air in the conversion duct 17 to the lower air outlet 311.

[0153] The indoor heat exchanger 44 is installed in the mounting cavity and located between the rear panel 32 and the volute assembly 1, and plays a role in regulating the air temperature.

[0154] like Figure 5a and Figure 5b As shown, when the indoor unit needs to supply air from both the top and bottom simultaneously, simply press the "top and bottom air supply" button on the remote control. Both the upper partition 183 and the lower partition 184 are in their initial state. Neither the upper air supply duct 13 of the first centrifugal air duct 121 nor the lower air supply duct 14 of the second centrifugal air duct 122 are connected to the conversion air duct 17. Both the upper baffle 191 and the lower baffle 192 are in their initial state. The upper baffle 191 is attached to the inner wall of the upper air supply duct 13 of the first centrifugal air duct 121, and the fan blade cavity B outlet 152 is opened. The lower baffle 192 is attached to the inner wall of the lower air supply duct 14 of the second centrifugal air duct 122, and the fan blade cavity A outlet 151 is opened. At this time, the two double centrifugal air ducts are independent, and the air duct device forms two upper air supply ducts 13 and two lower air supply ducts 14, so that the indoor unit can achieve top and bottom air supply with gentle airflow.

[0155] like Figure 6a and Figure 6b As shown, when the indoor unit vents air from the top, it generally vents cold air. When top airflow from the indoor unit is needed, simply press the "Top Airflow" button on the remote control. The lower partition 184 rotates 90° clockwise, connecting the lower air duct 14 of the second centrifugal duct 122 with the conversion duct 17. The upper partition 183 remains in its initial state, preventing the upper air duct 13 of the first centrifugal duct 121 from connecting with the conversion duct 17. The lower baffle 192 rotates 90° clockwise, opening the fan blade cavity B outlet 152 of the first centrifugal duct 121. With the upper baffle 191 closed and in its initial state, the outlet 151 of the fan blade cavity A of the second centrifugal air duct 122 is sealed. At this time, the air duct device includes three upward air outlet channels, namely the upper air supply channel 13 of the first centrifugal air duct 121, the upper air supply channel 13 of the second centrifugal air duct 122, and the upper air outlet flow path. Compared with the traditional double centrifugal air duct, the three upper air outlet channels have one more air outlet channel, which increases the air outlet area, improves the air outlet efficiency, has a large air volume, and the cold air does not blow on people, resulting in a good cooling effect.

[0156] like Figure 7a and Figure 7bAs shown, when the indoor unit discharges air downwards, it generally discharges warm air. When downward air discharge is needed, simply press the "downward air discharge" button on the remote control. The upper baffle 183 rotates 90 degrees clockwise, connecting the upper air supply duct 13 of the first centrifugal air duct 121 with the conversion air duct 17. The lower baffle 184 remains in its initial state, disconnecting the lower air supply duct 14 of the second centrifugal air duct 122 from the conversion air duct 17. The lower baffle 192 rotates 90 degrees clockwise, closing the B outlet 152 of the fan blade chamber of the first centrifugal air duct 121. The upper baffle 191 remains in its initial state, and the outlet 151 of the fan blade cavity A of the second centrifugal air duct 122 is closed. At this time, the air duct device includes three downward air outlet channels, namely the downward air supply channel 14 of the first centrifugal air duct 121, the downward air supply channel 14 of the second centrifugal air duct 122, and the downward air outlet flow path. The three downward air outlet channels are more than the traditional double centrifugal air duct, which also has one more air outlet channel, increases the air outlet area, improves the air outlet efficiency, has a large air volume, and the indoor temperature rises quickly, with warm air starting from the feet.

[0157] It should be noted that the names A and B outlets of the wind turbine cavity are used to distinguish the outlets at different locations within the wind turbine cavity, and do not limit the structure and function of the wind turbine cavity outlets; C inlet of the wind turbine cavity is named to distinguish the inlet at different locations within the wind turbine cavity, and does not limit the structure and function of the wind turbine cavity inlet; and sections D, E, F, and G of the switching duct are named to distinguish the duct sections at different locations within the switching duct, and do not limit the structure and function of the duct sections.

[0158] Exemplary embodiments of this disclosure have been specifically shown and described above. It should be understood that this disclosure is not limited to the detailed structures, arrangements, or implementations described herein; rather, this disclosure is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended claims.

Claims

1. A ductwork device for use in cabinet-type air handling equipment; characterized in that, The air duct device forms a centrifugal air duct and a conversion air duct (17), the centrifugal air duct and the conversion air duct (17) are arranged side by side, and there are multiple centrifugal air ducts; Each centrifugal air duct includes, from top to bottom, an upper air supply duct (13), a fan blade cavity (15), and a lower air supply duct (14). The fan blade cavity (15) is used to house centrifugal fan blades (161). The fan blade cavity (15) has a fan blade cavity outlet A (151) formed on its radially upper side and a fan blade cavity outlet B (152) formed on its radially lower side. The fan blade cavity (15) has a fan blade cavity inlet C (153) formed on its axial side. The lower air supply duct (14) of the upper air supply duct (13) has a fan blade cavity outlet A (151) formed on its radially upper side and a fan blade cavity outlet B (152) formed on its radially lower side. The upper end of the upper air supply duct (13) is connected to the outlet (151) of the fan blade cavity A, and the upper end of the lower air supply duct (14) is connected to the outlet (152) of the fan blade cavity B, and the lower end of the lower air supply duct (14) is connected to the outlet (141) of the fan blade cavity B; the upper end of the conversion air duct (17) is connected to the outlet (171) of the conversion air duct, and the lower end of the conversion air duct (17) is connected to the outlet (172) of the conversion air duct. In the same centrifugal duct, an upper connecting port (181) is formed between the upper air supply duct (13) and the conversion duct (17), and the upper connecting port (181) can be controlled to open or close; when the upper connecting port (181) is closed, the upper air supply duct (13) and the conversion duct (17) are not connected; when the upper connecting port (181) is open, the upper air supply duct (13) and the conversion duct form a lower air outlet path between the A outlet (151) of the fan blade cavity and the lower outlet (172) of the conversion duct; or, A lower connecting port (182) is formed between the lower air supply duct (14) and the conversion air duct (17), and the lower connecting port (182) can be controlled to open or close; when the lower connecting port (182) is closed, the lower air supply duct (14) and the conversion air duct (17) are not connected; when the lower connecting port (182) is opened, the lower air supply duct (14) and the conversion air duct form an upper air outlet path between the B outlet (152) of the fan blade cavity and the upper outlet (171) of the conversion air duct. In the plurality of centrifugal ducts, at least one upper air supply duct (13) and the conversion duct (17) have an upper connection (181), and at least one lower air supply duct (14) and the conversion duct (17) have a lower connection (182).

2. The air duct device according to claim 1, characterized in that, An upper partition (183) is provided at the upper connecting port (181), and the upper partition (183) is provided with a first working position and a second working position; When the upper partition (183) is in the first working position, the upper partition (183) closes the upper communication port (181); When the upper partition (183) is in the second working position, the upper partition (183) opens the upper connecting port (181), and the upper partition (183) simultaneously separates the upper air supply duct (13), the upper connecting port (181) and the conversion air duct (17). The upper partition (183) divides the upper air supply duct (13) into an upper section (132) and a lower section (133) of the upper air supply duct, which are arranged opposite to each other, and the upper section (132) and the lower section (133) of the upper air supply duct are not connected; the upper partition (183) divides the upper connecting port (181) into an upper area (1811) and a lower area (1812) of the upper connecting port, which are arranged opposite to each other, and the upper area (1811) and the lower area (1812) of the upper connecting port are not connected; the upper partition (183) divides the conversion air duct (17) into a conversion air duct section D (173) and a conversion air duct section E (174) of the conversion air duct, which are arranged opposite to each other, and the conversion air duct section D (173) and the conversion air duct section E (174) are not connected; The fan blade cavity A outlet (151), the lower section of the upper air supply duct (133), the lower area of ​​the upper connecting port (1812), the conversion air duct E section (174), and the conversion air duct lower outlet (172) are sequentially connected to form the lower air outlet path.

3. The air duct device according to claim 2, characterized in that, A lower partition (184) is provided at the lower connecting port (182), and the lower partition (184) is provided with a third working position and a fourth working position; When the lower partition (184) is in the third working position, the lower partition (184) closes the lower connecting port (182); When the lower partition (184) is in the fourth working position, the lower partition (184) opens the lower connecting port (182), and the lower partition (184) simultaneously separates the lower air supply duct (14), the lower connecting port (182) and the conversion air duct (17). The lower partition (184) divides the lower air supply duct (14) into an upper section (142) and a lower section (143) of the lower air supply duct, which are arranged opposite to each other, and the upper section (142) and the lower section (143) of the lower air supply duct are not connected; the lower partition (184) divides the lower connecting port (182) into an upper area (1821) and a lower area (1822) of the lower connecting port, which are arranged opposite to each other, and the upper area (1821) and the lower area (1822) of the lower connecting port are not connected; the lower partition (184) divides the conversion air duct (17) into a conversion air duct section F (175) and a conversion air duct section G (176) of the conversion air duct, which are arranged opposite to each other, and the conversion air duct section F (175) and the conversion air duct section G (176) are not connected; The fan blade cavity outlet B (152), the upper section of the lower air supply duct (142), the upper area of ​​the lower connecting port (1821), the conversion air duct section F (175), and the upper outlet of the conversion air duct (171) are sequentially connected to form the upper air outlet path.

4. The air duct device according to claim 1, characterized in that, The multiple blade chambers (15) are staggered in the vertical direction, and the blade chambers (15) have blade chamber C inlets (153) on both sides of the axial direction; The centrifugal fan (161) is a double-suction centrifugal fan, and each fan blade cavity (15) is provided with multiple centrifugal fan blades (161) arranged side by side.

5. The air duct device according to claim 1, characterized in that, The air duct device is equipped with a simultaneous air outlet from top and bottom, an air outlet from top, and an air outlet from bottom. When neither the upper air supply duct (13) nor the lower air supply duct (14) is connected to the conversion air duct (17), a portion of the air in the fan blade cavity (15) can be discharged through the upper air supply duct (13) and the upper outlet (131) of the air supply duct, and another portion of the air in the fan blade cavity (15) can be discharged through the lower air supply duct (14) and the lower outlet (141) of the air supply duct. The air duct device can operate in the mode of simultaneous upper and lower air supply. When the air duct device forms the upper air outlet flow path, a portion of the air in the fan blade cavity (15) can be discharged through the upper air supply duct (13) and the upper outlet (131) of the air supply duct, and another portion of the air in the fan blade cavity (15) can be discharged through the upper air outlet flow path. The air duct device can operate the upper air outlet mode. When the air duct device forms the lower air outlet path, a portion of the air in the fan blade cavity (15) can be discharged through the lower air supply duct (14) and the lower outlet (141) of the air supply duct, and another portion of the air in the fan blade cavity (15) can be discharged through the lower air outlet path. The air duct device can operate the lower air outlet mode.

6. The air duct device according to claim 1, characterized in that, The air duct device also includes a housing (3), which includes a rear panel (32), a front panel (31), and a top plate (35) connecting the rear panel (32) and the front panel (31); a rear air inlet (321) is formed at the lower end of the rear panel (32), a lower air outlet (311) is formed at the lower end of the front panel (31), and an upper air inlet (352) and an upper air outlet (351) are formed on the top plate (35); an installation cavity is formed inside the housing (3); The centrifugal air duct and the conversion air duct (17) are arranged in the mounting cavity. The inlet (153) of the fan blade cavity C is connected to the upper air inlet (352) and the rear air inlet (321) through the mounting cavity. The upper outlet (131) of the air supply duct and the upper outlet (171) of the conversion air duct are connected to the upper air outlet (351). The lower outlet (141) of the air supply duct and the lower outlet (172) of the conversion air duct are connected to the lower air outlet (311).

7. The air duct device according to claim 6, characterized in that, An air guide mechanism is provided at the upper air outlet (351). The air guide mechanism includes multiple rotatable air guide plates (41). The multiple air guide plates (41) are arranged sequentially at intervals along the front and rear direction of the housing (3). The multiple air guide plates (41) can open or close the upper air outlet (351) or adjust the air outlet direction of the upper air outlet (351). A lower air outlet grille (43) is provided at the lower air outlet (311), and there are multiple lower air outlet grilles (43); the multiple lower air outlet grilles (43) are arranged sequentially at intervals along the vertical direction of the housing (3), and the multiple lower air outlet grilles (43) can adjust the air outlet direction of the lower air outlet (311).

8. The air duct device according to claim 6, characterized in that, The air duct device also forms an upper air outlet duct (211) and a lower air outlet duct (221). The upper outlet (131) of the air supply duct and the upper outlet (171) of the conversion duct are connected to the upper air outlet (351) through the upper air outlet duct (211). The lower outlet (141) of the air supply duct and the lower outlet (172) of the conversion duct are connected to the lower air outlet (311) through the lower air outlet duct (221).

9. The air duct device according to claim 8, characterized in that, The air duct device includes a volute assembly (1) and an air outlet frame assembly. The volute assembly (1) includes a volute (111) and a volute cover (112). The volute (111) and the volute cover (112) are fastened together to form the centrifugal air duct and the conversion air duct (17). The air outlet frame assembly includes an upper air outlet frame (21) and a lower air outlet frame (22). The upper air outlet frame (21) is disposed above the volute assembly (1) and forms the upper air outlet duct (211). The lower air outlet frame (22) is disposed below the volute assembly (1) and forms the lower air outlet duct (221).

10. The air duct device according to claim 3, characterized in that, The centrifugal duct includes a first centrifugal duct (121) and a second centrifugal duct (122), and the conversion duct (17) is disposed between the first centrifugal duct (121) and the second centrifugal duct (122); an upper connecting port (181) is formed between the upper air supply duct (13) of the first centrifugal duct (121) and the conversion duct (17), and a lower connecting port (182) is formed between the lower air supply duct (14) of the second centrifugal duct (122) and the conversion duct (17); in the vertical direction of the duct device, the position of the fan blade cavity (15) of the first centrifugal duct (121) is lower than the position of the fan blade cavity (15) of the second centrifugal duct (122); When the upper partition (183) is in the first working position and the lower partition (184) is in the fourth working position, the upper air supply duct (13) and the conversion duct (17) of the first centrifugal air duct (121) are not connected. The lower air supply duct (14) of the second centrifugal air duct (122) between the corresponding fan blade cavity B outlet (152) and the lower connecting port (182) is connected to the conversion duct (17) between the lower connecting port (182) and the upper outlet (171) of the conversion duct to form the upper air outlet path. When the upper partition (183) is in the second working position and the lower partition (184) is in the third working position, the lower air supply duct (14) and the conversion duct (17) of the second centrifugal air duct (122) are not connected. The portion of the upper air supply duct (13) of the first centrifugal air duct (121) between the corresponding fan blade cavity A outlet (151) and the upper connecting port (181) is connected to the portion of the conversion duct (17) between the upper connecting port (181) and the lower outlet (172) of the conversion duct to form the lower air outlet path.

11. The air duct device according to claim 10, characterized in that, A movable lower baffle (192) is provided at the fan blade cavity B outlet (152) of the first centrifugal air duct (121), and the lower baffle (192) can be controlled to open or close the fan blade cavity B outlet (152) of the first centrifugal air duct (121); a movable upper baffle (191) is provided at the fan blade cavity A outlet (151) of the second centrifugal air duct (122), and the upper baffle (191) can be controlled to open or close the fan blade cavity A outlet (151) of the second centrifugal air duct (122); When both the B outlet (152) of the first centrifugal duct (121) and the A outlet (151) of the second centrifugal duct (122) are open, the upper partition (183) is in the first working position, and the lower partition (184) is in the third working position, a portion of the air in the fan blade cavity (15) of the first centrifugal duct (121) is discharged through the upper air supply duct (13) of the first centrifugal duct (121), and the fan blades of the first centrifugal duct (121) are... Another part of the air in the cavity (15) is discharged through the lower air supply duct (14) of the first centrifugal air duct (121), a part of the air in the fan blade cavity (15) of the second centrifugal air duct (122) is discharged through the upper air supply duct (13) of the second centrifugal air duct (122), and another part of the air in the fan blade cavity (15) of the second centrifugal air duct (122) is discharged through the lower air supply duct (14) of the second centrifugal air duct (122), so that the air duct device can realize simultaneous air outlet from the top and bottom; When the outlet (152) of the blade cavity B of the first centrifugal duct (121) is closed, the outlet (151) of the blade cavity A of the second centrifugal duct (122) is opened, the upper partition (183) is in the first working position and the lower partition (184) is in the fourth working position, the air in the blade cavity (15) of the first centrifugal duct (121) is discharged through the upper air supply duct (13) of the first centrifugal duct (121), a part of the air in the blade cavity (15) of the second centrifugal duct (122) is discharged through the upper air supply duct (13) of the second centrifugal duct (122), and another part of the air in the blade cavity (15) of the second centrifugal duct (122) is discharged through the upper air outlet path, and thus the duct device can realize upper air outlet; When the outlet (152) of the blade cavity B of the first centrifugal duct (121) is opened, the outlet (151) of the blade cavity A of the second centrifugal duct (122) is closed, the upper partition (183) is in the second working position and the lower partition (184) is in the third working position, a portion of the air in the blade cavity (15) of the first centrifugal duct (121) is discharged through the lower air supply duct (14) of the first centrifugal duct (121), another portion of the air in the blade cavity (15) of the first centrifugal duct (121) is discharged through the lower air outlet path, and the air in the blade cavity (15) of the second centrifugal duct (122) is discharged through the lower air supply duct (14) of the second centrifugal duct (122), thereby enabling the duct device to achieve lower air outlet.

12. A cabinet-type air conditioner, characterized in that, Includes an indoor unit, said indoor unit comprising the air duct device as described in any one of claims 1 to 11.

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