Air duct structure and cabinet air conditioner

Abstract

This invention provides a duct structure and a cabinet-type air conditioner, belonging to the field of air conditioners. The duct structure includes at least adjacent duct components, each equipped with a dual-suction fan. Each duct component also includes a second air outlet channel that avoids the axial air inlet of the fan. By connecting two duct components through the second air outlet channel and combining this with the motion control of a volute mechanism, the duct structure can achieve airflow in different directions through the position switching of the volute mechanism. Furthermore, the connection of the two second air outlet channels increases the airflow volume when air is directed in different directions.

Description

Technical Field

[0001] This invention relates to the field of air conditioner technology, and more particularly to an air duct structure and a cabinet air conditioner. Background Art

[0002] Existing top and bottom air-discharge cabinet air conditioners mainly have two types of fan systems. One type is a single-suction centrifugal fan system with an additional auxiliary air outlet channel added along the fan blade axis to increase the air volume of single top or single bottom air outlet. The other type is a double-suction centrifugal fan system. Because this type of fan system requires air to be drawn in from both sides of the fan blades, it is not possible to add an auxiliary air outlet channel along the axis. Summary of the Invention

[0003] To overcome the problem in related technologies where dual-suction fans in air conditioners require suction from both sides of the fan axis, making it impossible to increase air volume by adding an auxiliary air outlet channel, this invention proposes a duct structure and a cabinet air conditioner. The duct structure includes at least adjacent duct components, and each duct component is equipped with a dual-suction fan. Each duct component has a second air outlet channel that avoids the fan axis air inlet. By connecting the two duct components through the second air outlet channel and combining the motion control of the volute mechanism, the air supply effect in different directions of the duct structure can be achieved by switching the position of the volute mechanism. Furthermore, the connection of the two second air outlet channels can increase the air volume when supplying air in different directions.

[0004] The first aspect of this invention provides a duct structure comprising multiple fluid-connected duct components, each duct component including:

[0005] The duct housing and the dual suction fan have a first housing opening and a second housing opening at one end of the housing wall in the height direction, and a third housing opening at the other end.

[0006] The interior of the duct shell forms a fan mounting cavity for installing the fan. Fan inlets are formed on both sides of the fan mounting cavity along the axial direction. Fan outlet 1 and fan outlet 2 are formed at one end of the fan mounting cavity in the height direction, and fan outlet 3 is formed at the other end.

[0007] A first air outlet channel A connects the first air outlet of the fan and the first housing outlet; a first air outlet channel B connects the second air outlet of the fan and the second housing outlet; and a second air outlet channel connects the third air outlet of the fan and the third housing outlet.

[0008] The volute motion mechanism is capable of circumferentially sliding around the preset rotation axis of the dual suction fan. The volute motion mechanism has a first sliding position and a second sliding position when sliding.

[0009] When the volute mechanism is in the first sliding position, it divides the fan mounting cavity into a first cavity and a second cavity. The first cavity is connected to the fan inlet and the first fan outlet, and the second cavity is connected to the second fan outlet and the third fan outlet. The air that enters the first cavity through the fan inlet can be discharged through the first fan outlet, the first air outlet channel A, and the first housing outlet.

[0010] When the volute mechanism is in the second sliding position, it divides the fan mounting cavity into a third cavity and a fourth cavity. The third cavity is connected to the fan inlet, the second fan outlet, and the third fan outlet, while the fourth cavity is connected to the first fan outlet. The air that enters the third cavity through the fan inlet can be discharged through the third fan outlet, the second air outlet channel, and the third housing outlet.

[0011] At least two of the multiple air duct components are arranged adjacent to each other, and the third housing port of one air duct component and the third housing port of the other air duct component are in fluid communication.

[0012] In the above technical solution, the two second air outlet channels of the two air duct components are fluidly connected through two third housing ports, and the two air duct components are arranged adjacent to each other in the height direction of the air duct structure.

[0013] The two interconnected second air outlet channels form an auxiliary air outlet channel that extends along the height of the air duct structure and avoids the axial air inlet of the dual suction fan.

[0014] In the above technical solution, an auxiliary air handling module is provided in the secondary air outlet duct;

[0015] The auxiliary air treatment module includes a fragrance module and / or a sterilization module and / or a humidification module.

[0016] In the above technical solution, the air duct housing has opposite sides A and B in its thickness direction, and the air duct housing is also provided with ventilation channels penetrating sides A and B in its thickness direction. The ventilation channels include ventilation channel opening A that opens on side A of the air duct housing and ventilation channel opening B that opens on side B of the air duct housing.

[0017] The axial air inlets of the dual suction fan include fan inlet A, which opens on side A of the duct housing, and fan inlet B, which opens on side B of the duct housing.

[0018] The air duct components also include:

[0019] A sealing element is installed on side B of the air duct housing. The sealing element and side B of the air duct housing form an auxiliary air duct of the air duct component. The auxiliary air duct of the air duct component connects the ventilation channel and the air inlet B of the dual suction fan.

[0020] When the air duct component is installed in the air conditioner, the A side of the air duct housing is positioned opposite the heat exchange component in the air conditioner, so that part of the airflow after heat exchange by the heat exchange component can directly enter the double suction fan through the fan inlet A opening on the A side of the air duct housing, and the other part can enter the double suction fan through the ventilation channel and the auxiliary air duct of the air duct component from the fan inlet B opening on the B side of the air duct housing.

[0021] In the above technical solution, the air duct structure includes two air duct components symmetrically arranged in its height direction, and the two air duct components on the two air duct components are connected to form an auxiliary air duct of the air duct structure.

[0022] The two sets of symmetrically arranged air duct components form an intermediate channel, with one end of the intermediate channel connected to the external environment of the ventilation duct structure and the other end connected to the auxiliary air duct of the ventilation duct structure.

[0023] A second aspect of this invention provides a cabinet-type air conditioner, comprising:

[0024] The casing has an upper air vent at the top and a lower air vent at the bottom. The casing has the aforementioned air duct structure inside. The air duct structure is arranged along the height of the casing, and the multiple air duct components of the air duct structure include an upper air duct component located near the upper air vent and a lower air duct component located near the lower air vent.

[0025] The first and second housing openings of the upper air duct component are both connected to the upper air vent, and the first and second housing openings of the lower air duct component are both connected to the lower air vent.

[0026] In the above technical solution, an air inlet is provided on the outer periphery of the housing, and a fuselage housing channel is defined between the housing and the air duct structure.

[0027] The casing channel is equipped with heat exchange components, with the windward side of the heat exchange components facing the air inlet of the casing and the leeward side facing the air inlet on one side of the axial direction of the dual suction fan.

[0028] A filter screen is installed between the windward side of the heat exchange component and the air inlet of the shell. The filter screen is used to filter the airflow flowing in from the air inlet of the shell. A heating element is installed between the leeward side of the heat exchange component and the air inlet on one side of the axial direction of the dual suction fan.

[0029] In the above technical solution, the heat exchange component is a plate-shaped heat exchanger, which extends along the height direction of the casing.

[0030] In the above technical solution, the casing includes a front panel facing the user and a rear panel opposite to the front panel;

[0031] The air inlet for the casing is located on the rear panel.

[0032] The casing also includes:

[0033] The left and right side panels are located between the front and rear panels, and the front, left, rear and right side panels are connected in sequence to form the casing.

[0034] In the above technical solution, the air conditioner also includes:

[0035] Air conditioners also include:

[0036] The upper air outlet frame and the lower air outlet frame form an upper air outlet duct and a lower air outlet duct. One end of the upper air outlet duct is connected to the first housing opening and the second housing opening of the upper air outlet component, and the other end is connected to the upper air outlet. One end of the lower air outlet duct is connected to the first housing opening and the second housing opening of the lower air outlet component, and the other end is connected to the lower air outlet.

[0037] Air conditioners also include:

[0038] A top cover located at the top of the upper air outlet frame and a chassis located at the bottom of the lower air outlet frame.

[0039] In the above technical solutions, the cabinet air conditioner has a single top air outlet cooling mode, a single bottom air outlet heating mode, and a simultaneous top and bottom air outlet cooling or heating mode.

[0040] When the cabinet air conditioner is running in the single top-outlet cooling mode, the volute mechanism in the upper air duct component is controlled to slide to the first sliding position, and the fan mounting cavity in the upper air duct component is divided into the first cavity and the second cavity. The volute mechanism in the lower air duct component is controlled to slide to the second sliding position, and the fan mounting cavity in the lower air duct component is divided into the third cavity and the fourth cavity. At this time, the airflow driven by the dual suction fans in the lower air duct component flows out through the secondary air outlet channel and then out through the first air outlet channel B with an upward opening in the upper air duct component. The airflow driven by the dual suction fans in the upper air duct component flows out through the first air outlet channel A with an upward opening in the upper air duct component.

[0041] When the cabinet air conditioner is operating in single-downward air outlet heating mode, the volute mechanism in the upper air duct component is controlled to slide to the second sliding position, and the fan mounting cavity in the upper air duct component is divided into the third and fourth cavities. The volute mechanism in the lower air duct component is controlled to slide to the first sliding position, and the fan mounting cavity in the lower air duct component is divided into the first and second cavities. At this time, the airflow driven by the dual suction fans in the upper air duct component flows out through the secondary air outlet channel and then out through the downward-opening first air outlet channel B in the lower air duct component. The airflow driven by the dual suction fans in the lower air duct component flows out downward through the downward-opening first air outlet channel A in the lower air duct component.

[0042] When the cabinet air conditioner is operating in cooling or heating mode with simultaneous airflow from both the top and bottom, the volute mechanism in the upper air duct component is controlled to slide to the first sliding position, and the fan mounting cavity in the upper air duct component is divided into a first cavity and a second cavity. The volute mechanism in the lower air duct component is also controlled to slide to the first sliding position, and the fan mounting cavity is divided into a first cavity and a second cavity. At this time, the airflow driven by the dual suction fans in the upper air duct component flows out through the first air outlet channel A with an upward opening in the upper air duct component, and the airflow driven by the dual suction fans in the lower air duct component flows downward through the first air outlet channel A with a downward opening in the lower air duct component.

[0043] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0044] The air duct structure provided in this embodiment of the invention includes at least adjacent air duct components, and each air duct component is equipped with a dual suction fan. Each air duct component is provided with a second air outlet channel that avoids the axial air inlet of the fan. By connecting the two air duct components through the second air outlet channel and combining the motion control of the volute mechanism, on the one hand, the air supply effect in different directions of the air duct structure can be achieved by switching the position of the volute mechanism, and on the other hand, the connection of the two second air outlet channels can also increase the air supply volume when supplying air in different directions. Attached Figure Description

[0045] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0046] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the air duct structure of the present invention from the perspective of side A of the air duct shell;

[0047] Figure 2 This is a three-dimensional structural schematic diagram of the air duct structure embodiment of the present invention from the B-side view of the air duct shell;

[0048] Figure 3 This is a cross-sectional view of an embodiment of the air duct structure of the present invention. Figure 1 ;

[0049] Figure 4 This is a cross-sectional view of an embodiment of the air duct structure of the present invention. Figure 2 ;

[0050] Figure 5 This is an exploded structural diagram of an embodiment of the air duct structure of the present invention;

[0051] Figure 6 This is an exploded structural diagram of an embodiment of the cabinet air conditioner of the present invention;

[0052] Figure 7 This is a schematic cross-sectional view of an embodiment of the cabinet air conditioner of the present invention. Figure 1 ;

[0053] Figure 8 This is a schematic cross-sectional view of an embodiment of the cabinet air conditioner of the present invention. Figure 1 The figure shows the airflow path of a cabinet air conditioner when it is in cooling / heating mode with simultaneous top and bottom airflow.

[0054] Figure 9 This is a schematic cross-sectional view of an embodiment of the cabinet air conditioner of the present invention. Figure 2 The figure shows the airflow path of a cabinet air conditioner when it is in cooling / heating mode with simultaneous top and bottom airflow.

[0055] Figure 10 This is a schematic cross-sectional view of an embodiment of the cabinet air conditioner of the present invention. Figure 2 The figure shows the airflow path of a cabinet air conditioner when it is in single-outlet heating mode.

[0056] Figure 11 This is a schematic cross-sectional view of an embodiment of the cabinet air conditioner of the present invention. Figure 2 The figure shows the airflow path of a cabinet air conditioner when it is in single-airflow cooling mode.

[0057] in:

[0058] 100 - Air duct components;

[0059] 10-Air duct housing; 10a-First housing opening; 10b-Second housing opening; 10c-Third housing opening; 11-First air outlet channel; 111-First air outlet channel A; 112-First air outlet channel B; 12-Second air outlet channel; 13-Ventilation channel; 1212-Secondary air outlet channel;

[0060] 20-Double suction fan; 20a-Fan outlet 1; 20b-Fan outlet 2; 20c-Fan outlet 3; 201-Fan inlet A; 202-Fan inlet B; 203-Worm tongue mechanism;

[0061] 30 - Seals;

[0062] 40 - Auxiliary air duct components;

[0063] 50 - Middle Channel;

[0064] 2-Housing; 21-Upper air vent; 22-Lower air vent; 23-Housing air inlet; 2a-Front panel; 2b-Rear panel; 2c-Upper air outlet frame; 2d-Lower air outlet frame; 2e-Left side panel; 2f-Right side panel; 2g-Top cover; 2h-Chassis;

[0065] 3-Heat exchange components;

[0066] 4-Filter screen;

[0067] 5-Heating element. Detailed Implementation

[0068] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims.

[0069] Currently, existing air conditioners with dual-suction fans cannot increase airflow by adding secondary air outlet channels because both sides of the fan axis need to draw air. This invention proposes a duct structure and a cabinet air conditioner. The duct structure includes at least adjacent duct components, and each duct component is equipped with a dual-suction fan. Each duct component has a second air outlet channel that avoids the fan axis air inlet. By connecting the two duct components through the second air outlet channel and combining it with the motion control of the volute mechanism, the airflow effect in different directions of the duct structure can be achieved by switching the position of the volute mechanism. Furthermore, the connection of the two second air outlet channels can increase the airflow volume when air is delivered in different directions.

[0070] The following is in conjunction with the appendix Figure 1 - Appendix Figure 11 The technical solution of this embodiment is described in detail. Unless otherwise specified, the following implementation methods and embodiments can be combined with each other.

[0071] Example

[0072] like Figures 1-11 As shown, the first aspect of this invention proposes a duct structure, including multiple fluid-connected duct components 100, specifically, as... Figures 1-4 As shown, each air duct component 100 includes:

[0073] The air duct housing 10 and the dual suction fan 20 have a first housing opening 10a and a second housing opening 10b formed at one end of the shell wall in the height direction, and a third housing opening 10c formed at the other end.

[0074] The interior of the air duct housing 10 forms a fan mounting cavity for mounting the dual suction fans 20. Fan inlets are formed on both axial sides of the fan mounting cavity. Fan outlet 1 20a and fan outlet 20b are formed at one end of the fan mounting cavity in the height direction, and fan outlet 3 20c is formed at the other end.

[0075] The first air outlet channel 11 includes a first air outlet channel A111 and a first air outlet channel B112. The first air outlet channel A111 connects the fan outlet 20a and the first housing outlet 10a. The first air outlet channel B112 connects the fan outlet 20b and the second housing outlet 10b. The second air outlet channel 12 connects the fan outlet 20c and the third housing outlet 10c. The first air outlet channel A111 and the first air outlet channel B112 are adjacent and spaced apart.

[0076] The volute motion mechanism 203 is capable of circumferentially sliding around the preset rotation axis of the dual suction fan 20. The volute motion mechanism 203 has a first sliding position and a second sliding position when sliding.

[0077] When the volute mechanism 203 is in the first sliding position, it divides the fan mounting cavity into a first cavity and a second cavity. The first cavity is connected to the fan inlet and the fan outlet 20a, and the second cavity is connected to the fan outlet 20b and the fan outlet 20c. The air that enters the first cavity through the fan inlet can be discharged through the fan outlet 20a, the first air outlet channel A111, and the first housing port 10a.

[0078] When the volute mechanism 203 is in the second sliding position, it divides the fan mounting cavity into a third cavity and a fourth cavity. The third cavity is connected to the fan inlet, the second fan outlet 20b, and the third fan outlet 20c, while the fourth cavity is connected to the first fan outlet. The air that enters the third cavity through the fan inlet can be discharged through the third fan outlet 20c, the second air outlet channel 12, and the third housing outlet 10c.

[0079] At least two of the multiple air duct components 100 are arranged adjacent to each other, and the third housing port 10c of one air duct component 100 and the third housing port 10c of the other air duct component are in fluid communication.

[0080] Taking an air duct structure comprising two air duct components 100 as an example, such as Figures 1-4 As shown, in the height direction of the air duct structure, the two air duct components include an upper air duct component 100 and a lower air duct component 100 arranged along the height direction of the air duct structure.

[0081] like Figure 3As shown, when it is desired that the airflow is discharged from the upper part of the duct structure, the dual suction fans 20 in the upper duct component 100 and the dual suction fans 20 in the lower duct component 100 can be turned on simultaneously. The volute mechanism 203 in the upper duct component 100 is simultaneously controlled to slide to the first sliding position, and the volute mechanism 203 in the lower duct component 100 is controlled to slide to the second sliding position. At this time, the fan mounting cavity in the upper duct component 100 is divided into a first cavity and a second cavity. The first cavity connects to the fan inlet and the fan outlet 20a, and the second cavity connects to the fan outlet 20b and the fan outlet 20c. Air entering the first cavity through the fan inlet in the upper duct component 100 can be discharged upwards through the fan outlet 20a, the first air outlet channel A111, and the first housing opening 10a. The fan mounting cavity in the lower duct component 100 is divided into a third cavity and a fourth cavity, where the third cavity connects to the fan... The fourth chamber is connected to the first ventilator outlet, which includes an air inlet, a second air outlet 20b, and a third air outlet 20c. Air entering the third chamber through the air inlet in the lower duct component 100 can be discharged through the third air outlet 20c, the second air outlet duct 12, and the third housing outlet 10c. Since the upper and lower duct components 100 are connected via the third housing outlet 10c, the airflow in the lower duct component 100 can pass through the lower duct component 10c. The third housing port 10c of 0 enters the upper air duct component 100 and is discharged upward through the fan outlet 20b of the upper air duct component 100. That is, the airflow driven by both the upper air duct component 100 and the lower air duct component 100 can be discharged upward. At the same time, since the axial air inlets on both sides of the double suction fan 20 in the upper air duct component 100 and the double suction fan 20 in the lower air duct component 100 are not blocked, the air volume of the air duct structure when discharging upward can be increased.

[0082] Similarly, when it is desired to exhaust airflow from the lower part of the duct structure, the dual suction fans 20 in the upper duct component 100 and the dual suction fans 20 in the lower duct component 100 can be turned on simultaneously. At the same time, the volute mechanism 203 in the upper duct component 100 is controlled to slide to the second sliding position, and the volute mechanism 203 in the lower duct component 100 is controlled to slide to the first sliding position. At this time, the fan mounting cavity in the upper duct component is divided into a third cavity and a fourth cavity. The third cavity connects to the fan inlet, the second fan outlet 20b, and the third fan outlet 20c, while the fourth cavity connects to the first fan outlet. Air entering the third cavity through the fan inlet in the upper duct component 100 can then be discharged downwards through the third fan outlet 20c, the second exhaust channel 12, and the third housing opening 10c. The fan mounting cavity in the lower duct component is divided into a first cavity and a second cavity. The first cavity connects to the fan inlet and the first fan outlet. 20a, the second chamber is connected to the second ventilator outlet 20b and the third ventilator outlet 20c; at this time, the air entering the first chamber through the ventilator inlet in the lower air duct component 100 can be discharged downward through the first ventilator outlet 20a, the first air outlet channel A111 and the first housing port 10a. Since the upper air duct component 100 and the lower air duct component 100 are connected through the third housing port 10c, the airflow in the upper air duct component 100 can enter the lower air duct component 100 through the third housing port 10c and be discharged downward through the second ventilator outlet 20b of the lower air duct component 100. That is, the airflow driven by the upper air duct component 100 and the lower air duct component 100 can be discharged downward. At the same time, since the axial air inlets on both sides of the double suction fan 20 in the upper air duct component 100 and the double suction fan 20 in the lower air duct component 100 are not blocked, the airflow volume of the duct structure when discharging downward can be increased.

[0083] In this embodiment of the invention, the two air duct components 100 are connected by two second air outlet channels 12, and combined with the control of the volute tongue movement mechanism 203, on the one hand, the position switching of the volute tongue movement mechanism 203 can realize the air supply effect in different directions of the air duct structure, and on the other hand, the connection of the two second air outlet channels 12 can also realize the effect of increasing the air supply volume when supplying air in different directions.

[0084] It should be noted that, preferably, when the two second air outlet channels 12 of the two air duct components 100 are fluidly connected through the two third housing ports 10c, the two air duct components 100 are arranged adjacent to each other in the height direction of the air duct structure; and the two fluidly connected second air outlet channels 12 constitute an auxiliary air outlet channel 1212 extending along the height direction of the air duct structure and avoiding the axial air inlet of the dual suction fan. Figure 3 and Figure 4 As shown.

[0085] It should also be noted that since the aforementioned secondary air outlet duct 1212 is used to connect the two air duct components 100, the secondary air outlet duct 1212 is an independent air outlet duct. Therefore, some auxiliary air handling modules can be added to this duct, such as fragrance modules and / or sterilization modules and / or humidification modules, to achieve auxiliary processing of the airflow while supplying air. Preferably, a sterilization module can be set in the secondary air outlet duct 1212, so that the sterilization function can be activated when the air duct structure is either single upper air outlet or single lower air outlet, so that it is not necessary to add the same functional device to both the upper air duct component 100 and the lower air duct component 100. The sterilization module is not shown in the figure.

[0086] It should also be noted that, such as Figure 5 As shown, the air duct structure in this embodiment of the invention is a detachable structure. Specifically, the air duct structure includes an air duct volute and an air duct volute cover. When the air duct volute and the air duct volute cover are joined together, they can define an air duct component 100 with a fan mounting cavity and an air outlet channel inside.

[0087] It should also be noted that, Figure 5 The air duct structure shown has one side of the upper air duct component 100 and the lower air duct component 100 integrally formed as an air duct volute, and the other side integrally formed as an air duct volute cover. Of course, in some embodiments not shown, the upper air duct component 100 and the lower air duct component 100 can also be two independent air duct components, and each independent air duct component can be configured as a detachable structure with a volute and a volute cover. The specific composition of the air duct structure is not limited in this embodiment. However, relatively preferably, when the upper air duct component 100 and the lower air duct component 100 in the air duct structure are designed such that one side is integrally formed as an air duct volute and the other side is integrally formed as an air duct volute cover, the assembly efficiency is higher when assembling the air duct structure.

[0088] In any of the above embodiments, such as Figure 1 and Figure 2 As shown, the duct housing 10 has opposing sides A and B in its thickness direction. Figure 1 The image shows side A of the duct housing 10. Figure 2 The image shows side B of the duct housing 10, wherein the duct housing 10 is further provided with a ventilation channel 13 in its thickness direction, which penetrates side A and side B of the duct housing. The ventilation channel 13 includes a ventilation channel opening A that opens to side A of the duct housing and a ventilation channel opening B that opens to side B of the duct housing.

[0089] like Figure 4 As shown, the air inlets on both sides of the axial direction of the dual suction fan 20 include a fan inlet A201 that opens on the A side of the air duct housing and a fan inlet B202 that opens on the B side of the air duct housing.

[0090] like Figure 2 As shown, the air duct component 100 also includes:

[0091] A sealing element 30 is installed on the B side of the air duct housing. The sealing element 30 and the B side of the air duct housing form an auxiliary air duct 40 for the air duct component. The auxiliary air duct 40 for the air duct component is connected to the ventilation channel 13 and the fan inlet B202 of the dual suction fan 20.

[0092] When the air duct component 100 is installed in the air conditioner, the A side of the air duct housing is opposite to the heat exchange component 3 in the air conditioner, so that part of the airflow after heat exchange by the heat exchange component 3 can directly enter the double suction fan 20 through the fan inlet A201 opening on the A side of the air duct housing, and the other part can enter the double suction fan 20 through the ventilation channel 13 and the auxiliary air duct 40 of the air duct component from the fan inlet B202 opening on the B side of the air duct housing.

[0093] The air duct structure proposed in this embodiment of the invention involves opening a ventilation channel 13 on the air duct component 100 where the dual suction fan 20 is installed, and setting a sealing element 30 on the B side of the air duct component 100. The cooperation between the sealing element 30 and the ventilation channel 13 enables the sealing element 30 and the air duct component 100 to form an auxiliary air duct 40. This auxiliary air duct 40 can introduce the airflow from one axial side of the dual suction fan 20 to the other axial side of the dual suction fan 20. Therefore, when the air duct component 100 is installed in an air conditioner, only a heat exchanger needs to be set on one axial side of the dual suction fan 20 to allow the airflow after heat exchange to enter the dual suction fan 20 from the air inlets on both axial sides of the dual suction fan 20. This eliminates the need to set heat exchangers on both axial sides of the dual suction fan 20, thereby reducing the production cost and size of the air conditioner. It also eliminates the need to make the shape of the heat exchanger too complex to meet the air intake requirements on both axial sides of the dual suction fan 20.

[0094] It should be noted that the "dual suction fan" mentioned in the embodiments of the present invention refers to a centrifugal fan that can draw air from both sides of the fan axis.

[0095] It should also be noted that the aforementioned seal 30 is disposed on the B side of the air duct component 100. However, in some alternative embodiments, the seal 30 can be disposed on the A side of the air duct component 100, and the B side of the air duct component 100 can be disposed opposite to the heat exchange component 3. The effect produced is the same. In this embodiment of the invention, the seal 30 is disposed on the B side of the air duct housing only as an example of the installation position of the seal 30, and it does not mean that the installation position of the seal 30 is limited.

[0096] In any of the above embodiments, such as Figures 1-4As shown, when the air duct structure includes two air duct components 100, preferably, the two air duct components 100 are symmetrically arranged in the height direction of the air duct structure, and the two air duct component auxiliary air ducts 40 on the two air duct components 100 are connected to form an auxiliary air duct of the air duct structure; that is, two fan axial air inlets located on the B side of the air duct housing can be covered simultaneously by a sealing member 30.

[0097] The two sets of symmetrically arranged air duct components 100 can also form an intermediate channel 50, one end of which is connected to the external environment of the ventilation duct structure and the other end is connected to the auxiliary air duct of the ventilation duct structure.

[0098] It should be noted that the intermediate channel 50 has the same function as the ventilation channel 13 mentioned above. That is, when the air duct structure is installed in the air conditioner, part of the airflow after heat exchange by the heat exchange component can directly enter the double suction fan 20 through the fan inlet A201 opening on the A side of the air duct housing, and another part can enter the double suction fan 20 through the two ventilation channels 13, the intermediate channel 50 and the auxiliary air duct 40 of the air duct component, and then enter the double suction fan 20 through the fan inlet B202 opening on the B side of the air duct housing, thereby increasing the air intake of the double suction fan 20.

[0099] It should also be noted that although the above description uses the example of a duct structure including two sets of duct components 100, in some embodiments not shown, the duct components 100 in the duct structure can also be set to three, four or five sets, etc., and can achieve the same effect of increasing air volume through reasonable arrangement. In this embodiment of the invention, the duct structure with three, four or five sets of duct components will not be specifically described.

[0100] In summary, the air duct structure provided in this embodiment of the invention effectively solves the bottleneck problems of existing dual-suction centrifugal fan systems, such as the inability to add an auxiliary air outlet duct and the inability to further increase the overall air volume. Through the design of the air duct structure and its coordination with the volute mechanism, it can increase air volume without reducing production efficiency or increasing costs, thereby effectively enhancing product competitiveness.

[0101] Furthermore, when the aforementioned air duct structure is installed in a cabinet air conditioner, it can increase the air volume of the air conditioner under different air outlet modes.

[0102] Specifically, the second aspect of the present invention provides a method such as... Figures 6-11 The cabinet-type air conditioner shown includes:

[0103] The housing 2 has an upper air vent 21 at its upper part and a lower air vent 22 at its lower part. The housing 2 has the aforementioned air duct structure inside. The air duct structure is arranged along the height direction of the housing 2, and the multiple air duct components 100 of the air duct structure include an upper air duct component located near the upper air vent 21 and a lower air duct component located near the lower air vent 22.

[0104] The first housing opening 10a and the second housing opening 10b of the upper air duct component are both connected to the upper air vent 21, and the first housing opening 10a and the second housing opening 10b of the lower air duct component are both connected to the lower air vent 22.

[0105] When a cabinet air conditioner is equipped with the air duct structure provided in the first aspect of the above embodiments, the air conditioner can achieve at least the following air supply modes.

[0106] Specifically, cabinet air conditioners can have a single top air outlet cooling mode, a single bottom air outlet heating mode, and a simultaneous top and bottom air outlet cooling or heating mode.

[0107] like Figure 11 As shown, when the cabinet air conditioner operates in single-airflow cooling mode, the volute mechanism 203 in the upper air duct component is controlled to slide to the first sliding position, and the fan mounting cavity in the upper air duct component is divided into a first cavity and a second cavity. The first cavity is connected to the fan inlet and the fan outlet 20a, and the second cavity is connected to the fan outlet 20b and the fan outlet 20c. At this time, the air entering the first cavity through the fan inlet in the upper air duct component 100 can be discharged upward through the fan outlet 20a, the first air outlet channel A111, and the first housing opening 10a. The volute mechanism 203 in the lower air duct component is controlled to slide to the second sliding position, and the fan mounting cavity in the lower air duct component is divided into a third cavity and a fourth cavity. The third cavity is connected to the fan inlet, the fan outlet 20b, and the fan outlet 20c, and the fourth cavity is connected to the fan outlet 20a. Air entering the third chamber through the fan inlet in the current air duct component 100 can be discharged through the fan outlet 20c, the second air outlet channel 12, and the third housing outlet 10c. Since the upper air duct component 100 and the lower air duct component 100 are connected through the third housing outlet 10c, the airflow in the lower air duct component 100 can enter the upper air duct component 100 through the third housing outlet 10c and be discharged upward through the fan outlet 20b of the upper air duct component 100. That is, the airflow driven by both the upper and lower air duct components 100 can be discharged upward. At the same time, since the axial air inlets on both sides of the double suction fan 20 in the upper air duct component 100 and the double suction fan 20 in the lower air duct component 100 are not blocked, the airflow volume of the air duct structure when discharging upward can be increased, thereby achieving a large airflow upward cooling effect.

[0108] like Figure 10When the cabinet air conditioner is operating in single-outlet heating mode, the volute mechanism 203 in the upper air duct component is controlled to slide to the second sliding position. The fan mounting cavity in the upper air duct component is divided into a third cavity and a fourth cavity. The third cavity is connected to the fan inlet, fan outlet 20b, and fan outlet 30c, and the fourth cavity is connected to the fan outlet 1. At this time, the air entering the third cavity through the fan inlet in the upper air duct component 100 can be discharged downward through the fan outlet 30c, the second air outlet channel 12, and the third housing opening 10c. The volute mechanism 203 in the lower air duct component is controlled to slide to the first sliding position. The fan mounting cavity in the lower air duct component is divided into a first cavity and a second cavity. The first cavity is connected to the fan inlet and fan outlet 10a, and the second cavity is connected to the fan outlet 20b and fan outlet 30c. At this time, the lower air duct... Air entering the first chamber through the fan inlet in component 100 can be discharged downward through the fan outlet 20a, the first air outlet channel A111, and the first housing outlet 10a. Since the upper air duct component 100 and the lower air duct component 100 are connected through the third housing outlet 10c, the airflow in the upper air duct component 100 can enter the lower air duct component 100 through the third housing outlet 10c and be discharged downward through the fan outlet 20b of the lower air duct component 100. That is, the airflow driven by both the upper air duct component 100 and the lower air duct component 100 can be discharged downward. At the same time, since the axial air inlets on both sides of the double suction fan 20 in the upper air duct component 100 and the double suction fan 20 in the lower air duct component 100 are not blocked, the airflow volume of the air duct structure when discharging downward can be increased, thereby achieving a large airflow downward air supply heating effect.

[0109] like Figure 8 and Figure 9As shown, when the cabinet air conditioner operates in cooling or heating mode with simultaneous airflow from both the top and bottom, the volute mechanism 203 in the upper air duct component is controlled to slide to the first sliding position. The fan mounting cavity in the upper air duct component is divided into a first cavity and a second cavity. The first cavity of the upper air duct component 100 is connected to the fan inlet and the fan outlet 20a, and the second cavity is connected to the fan outlet 20b and the fan outlet 20c. At this time, the air entering the first cavity through the fan inlet in the upper air duct component 100 can be discharged upward through the fan outlet 20a, the first air outlet channel A111, and the first housing opening 10a. The volute mechanism 203 in the lower air duct component... The actuator 203 is controlled to slide to the first sliding position, dividing the fan mounting cavity into a first cavity and a second cavity. The first cavity connects to the fan inlet and the fan outlet 20a, while the second cavity connects to the fan outlet 20b and the fan outlet 20c. At this time, the air entering the first cavity through the fan inlet in the lower duct component 100 can be discharged downwards through the fan outlet 20a, the first air outlet channel A111, and the first housing opening 10a. That is, the upper duct component 100 exhausts air upwards, and the lower duct component 100 exhausts air downwards. In this mode, the overall air volume can reach its maximum, thereby achieving rapid cooling or rapid heating of the air conditioner. Specifically, when the air conditioner is turned on, the air intake path of the air conditioner is as follows: Figure 8 and Figure 9 As shown, indoor air, under the action of the air duct system, passes through the air inlet panel components and then undergoes heat exchange with the evaporator assembly. Part of the airflow is directly drawn in from the guide ring near the evaporator and then blown out by the centrifugal fan blades. Another part of the airflow passes through ventilation channel 13 and intermediate channel 50 and is then drawn in from the guide ring away from the evaporator assembly, and then blown out by the centrifugal fan blades of the dual-suction fan 20. This achieves the dual-suction function of the air duct system, meaning the air conditioner operates in either a cooling mode or a heating mode with simultaneous airflow from both the top and bottom. In this mode, both the upper and lower air vents of the air conditioner open simultaneously, and air is discharged from both the top and bottom. The volute motion mechanism 203 of the upper air duct component 100 slides to the first sliding position under the action of the volute drive mechanism, and the volute motion mechanism 203 of the lower air duct component 100 slides to the first sliding position under the action of the volute drive mechanism, thereby realizing that the upper air duct component 100 discharges air upward and the lower air duct component 100 discharges air downward. At this time, no air passes through the secondary air outlet duct 1212. In this mode, the air volume of the whole unit can reach the maximum, realizing the rapid cooling or rapid heating effect of the air conditioner.

[0110] For example, taking the air conditioner operating in a simultaneous upper and lower airflow cooling mode as an example, when the ambient temperature of the floor-standing air conditioner reaches the set value in cooling mode, the air conditioner automatically shuts off the simultaneous upper and lower airflow cooling mode. At this time, the volute mechanism 203 in the upper air duct component 100 remains in the same position, while the volute mechanism 203 in the lower air duct component 100 slides to the second sliding position under the drive of the volute drive mechanism, thereby enabling the lower air duct component 100 to discharge air upwards. The air from the lower air duct component 100 passes through the secondary air outlet 1212 and is then blown out from the upper air outlet 21 of the air conditioner. This achieves simultaneous upward airflow from both fan systems in cooling mode, ensuring sufficient air volume while improving comfort. {If cold air were to continuously blow out from the lower air outlet 22 during cooling, it would cause the cold air to blow directly onto the user, causing discomfort. Simultaneously, because cold air sinks, blowing the air out from the upper air outlet during cooling allows the cold air to be evenly distributed throughout the room.}

[0111] For example, taking the air conditioner in the simultaneous upper and lower air outlet heating mode as an example, when the room temperature reaches the set value in the heating mode, the air conditioner automatically turns off the simultaneous upper and lower air outlet heating mode. At this time, the volute movement mechanism 203 of the upper air duct component 100 slides to the second sliding position under the drive of the volute drive mechanism, while the position of the volute movement mechanism 203 in the lower air duct component 100 remains unchanged, thereby realizing that the upper air duct component 100 outlets air downwards. The air from the upper air duct component 100 passes through the secondary air outlet channel 1212 and is blown out from the lower air outlet 22, thereby realizing that the two fan systems simultaneously outlet air downwards in the heating mode, thereby improving heating comfort {because hot air rises, when heating, the airflow is blown out from the lower air outlet, which can make the hot airflow evenly fill the entire room}.

[0112] It should be noted that the worm tongue drive mechanism described above for driving the worm tongue motion mechanism 203 can be referred to in the appendix. Figure 5 However, the worm tongue drive mechanism is not marked with a drawing number in the figure.

[0113] In any of the above embodiments, such as Figures 6-8 As shown, the outer periphery of the housing 2 is provided with a housing air inlet 23, wherein the housing 2 and the air duct structure define a housing channel;

[0114] The casing channel is equipped with a heat exchange component 3 {i.e. the evaporator component mentioned above}, with the windward side of the heat exchange component 3 facing the air inlet 23 of the casing and the leeward side facing the air inlet on one side of the axial direction of the dual suction fan 20.

[0115] A filter screen 4 is provided between the windward side of the heat exchange component 3 and the air inlet 23 of the shell. The filter screen 4 is used to filter the airflow flowing in from the air inlet 23 of the shell. A heating element 5 is provided between the leeward side of the heat exchange component 3 and the air inlet on one side of the axial direction of the dual suction fan 20. Preferably, the heating element 5 is an electric heating element.

[0116] In this embodiment of the invention, by placing the heat exchange component 3 between the air inlet 23 of the housing and the air inlet of the dual suction fan 20, the airflow can directly exchange heat with the heat exchange component 3 after entering the air conditioner, and be directly drawn into the dual suction fan after the heat exchange. This ensures the heat exchange effect while avoiding the loss of airflow. In addition, by placing a heating element between the air inlet of the dual suction fan and the heat exchange component 3, this embodiment of the invention can also increase the heating capacity of the air conditioner when the heating mode is turned on, thereby improving the heating efficiency.

[0117] Specifically, such as Figures 6-8 As shown, the heat exchange component 3 is a plate-shaped heat exchanger that extends along the height direction of the casing 2.

[0118] In this embodiment of the invention, by setting the heat exchanger in a plate shape, heat exchange with the airflow entering from the air inlet 23 of the shell can be maximized, thereby improving the heat exchange effect of the heat exchange component 3.

[0119] In any of the above embodiments, such as Figure 6 As shown, the housing 2 includes a front panel 2a facing the user and a rear panel 2b opposite to the front panel 2a;

[0120] The air inlet 23 of the housing is located on the rear panel 2b;

[0121] The casing also includes:

[0122] The left side panel 2e and the right side panel 2f are located between the front panel 2a and the rear panel 2b. The front panel 2a, the left side panel 2e, the rear panel 2b and the right side panel 2f are connected in sequence to form the housing 2.

[0123] In any of the above embodiments, the air conditioner further includes:

[0124] The upper air outlet frame 2c and the lower air outlet frame 2d form an upper air outlet duct and a lower air outlet frame 2d form a lower air outlet duct. One end of the upper air outlet duct is connected to the first housing opening 10a and the second housing opening 10b of the upper air outlet component, and the other end is connected to the upper air outlet 21. One end of the lower air outlet duct is connected to the first housing opening 10a and the second housing opening 10b of the lower air outlet component, and the other end is connected to the lower air outlet 22.

[0125] Air conditioners also include:

[0126] The top cover 2g is located at the top of the upper air outlet frame 2c, and the chassis 2h is located at the bottom of the lower air outlet frame 2d.

[0127] In this embodiment of the invention, by setting an upper air outlet frame 2c and a lower air outlet frame 2d, when the air conditioner is venting air from the top only, the airflow blown from the first air outlet channel A111 and the first air outlet channel B112 of the upper air duct component 100 can be mixed in the upper air outlet frame 2c before being discharged from the upper air outlet 21, thereby making the airflow discharged from the upper air outlet 21 more uniform. Similarly, when the air conditioner is venting air from the bottom only, the airflow blown from the first air outlet channel A111 and the first air outlet channel B112 of the lower air duct component 100 can be mixed in the lower air outlet frame 2d before being discharged from the lower air outlet 22, thereby making the airflow discharged from the lower air outlet 22 more uniform.

[0128] In summary, the cabinet air conditioner mentioned in the second aspect of the present invention, by adopting the air duct structure provided in the first aspect of the present invention, can effectively solve the bottleneck problem that the overall air volume of the air conditioner cannot be further increased due to the inability to add an auxiliary air outlet duct in the existing dual-suction centrifugal fan system. The air conditioner in the present invention, by adopting the above-mentioned air duct structure, can increase the overall air volume while ensuring that production efficiency is not reduced and costs are not increased, effectively enhancing the product's competitiveness.

[0129] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0130] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A duct structure, characterized in that, It includes multiple fluid-connected duct components (100), each of which includes: The air duct housing (10) and the dual suction fan (20) have a first housing opening (10a) and a second housing opening (10b) at one end of the shell wall in the height direction, and a third housing opening (10c) at the other end. The interior of the air duct housing (10) is formed with a fan mounting cavity for mounting the dual suction fan (20). Fan inlets are formed on both sides of the fan mounting cavity along the axial direction. Fan outlet 1 (20a) and fan outlet 2 (20b) are formed at one end of the fan mounting cavity in the height direction, and fan outlet 3 (20c) is formed at the other end. A first air outlet channel A (111) connects the first air outlet (20a) of the fan and the first housing outlet (10a); a first air outlet channel B (112) connects the second air outlet (20b) of the fan and the second housing outlet (10b); a second air outlet channel (12) connects the third air outlet (20c) of the fan and the third housing outlet (10c). The volute motion mechanism (203) is capable of circumferentially sliding around the preset rotation axis of the dual suction fan (20). The volute motion mechanism (203) has a first sliding position and a second sliding position when sliding. When the volute tongue mechanism (203) is in the first sliding position, the volute tongue mechanism (203) divides the fan mounting cavity into a first cavity and a second cavity. The first cavity is connected to the fan inlet and the fan outlet one (20a), and the second cavity is connected to the fan outlet two (20b) and the fan outlet three (20c). The air entering the first cavity through the fan inlet can be discharged through the fan outlet one (20a), the first air outlet channel A (111), and the first housing port (10a). When the volute tongue mechanism (203) is in the second sliding position, the volute tongue mechanism (203) divides the fan mounting cavity into a third cavity and a fourth cavity. The third cavity is connected to the fan inlet, the second fan outlet (20b) and the third fan outlet (20c). The fourth cavity is connected to the first fan outlet. The air entering the third cavity through the fan inlet can be discharged through the third fan outlet (20c), the second air outlet channel (12) and the third housing port (10c). At least two of the plurality of air duct components (100) are arranged adjacent to each other, and the third housing port (10c) of one of the two air duct components (100) and the third housing port (10c) of the other air duct component are in fluid communication.

2. The air duct structure according to claim 1, characterized in that, The two second air outlet channels (12) of the two air duct components (100) are in fluid communication through the two third housing ports (10c), and the two air duct components (100) are arranged adjacent to each other in the height direction of the air duct structure; The two second air outlet channels (12) that are in fluid communication form an auxiliary air outlet channel (1212) that extends along the height direction of the air duct structure and avoids the axial air inlet of the dual suction fan.

3. The air duct structure according to claim 2, characterized in that, An auxiliary air handling module is provided in the secondary air outlet duct (1212); The auxiliary air treatment module includes a fragrance module and / or a sterilization module and / or a humidification module.

4. The air duct structure according to any one of claims 1-3, characterized in that, The air duct housing (10) has opposing A side and B side in its thickness direction. The air duct housing (10) is also provided with a ventilation channel (13) penetrating the A side and B side in its thickness direction. The ventilation channel (13) includes a ventilation channel opening A that opens to the A side of the air duct housing and a ventilation channel opening B that opens to the B side of the air duct housing. The axial air inlets of the dual suction fan (20) include a fan inlet A (201) opening on the A side of the air duct housing and a fan inlet B (202) opening on the B side of the air duct housing. The air duct component (100) also includes: A sealing element (30) is provided on the B side of the air duct housing. The sealing element (30) and the B side of the air duct housing form an auxiliary air duct (40) for the air duct component. The auxiliary air duct (40) for the air duct component connects the ventilation channel (13) and the fan inlet B (202) of the dual suction fan (20). When the air duct component (100) is installed in the air conditioner, the A side of the air duct housing is used to face the heat exchange component in the air conditioner so that part of the airflow after heat exchange by the heat exchange component can directly enter the double suction fan (20) through the fan inlet A (201) opened on the A side of the air duct housing, and the other part can enter the double suction fan (20) through the ventilation channel (13) and the auxiliary air duct (40) of the air duct component and then enter the double suction fan (20) through the fan inlet B (202) opened on the B side of the air duct housing.

5. The air duct structure according to claim 4, characterized in that, The air duct structure includes two air duct components (100) symmetrically arranged in its height direction, and two auxiliary air ducts (40) on the two air duct components (100) are connected to form an auxiliary air duct of the air duct structure; A middle channel (50) is formed between the two sets of symmetrically arranged air duct components (100). One end of the middle channel (50) is connected to the external environment of the air duct structure, and the other end is connected to the auxiliary air duct of the air duct structure.

6. A cabinet-type air conditioner, characterized in that, The air conditioner includes: The housing (2) has an upper air vent (21) at its upper part and a lower air vent (22) at its lower part. The housing (2) has an internal air duct structure as described in any one of claims 1-5. The air duct structure is arranged along the height direction of the housing (2), and the multiple air duct components (100) of the air duct structure include an upper air duct component arranged near the upper air vent (21) and a lower air duct component arranged near the lower air vent (22). The first housing opening (10a) and the second housing opening (10b) of the upper air duct component are both connected to the upper air vent (21), and the first housing opening (10a) and the second housing opening (10b) of the lower air duct component are both connected to the lower air vent (22).

7. The cabinet-type air conditioner according to claim 6, characterized in that, The outer periphery of the housing (2) is provided with a housing air inlet (23), and the housing (2) and the air duct structure define a housing channel; The housing channel of the fuselage is provided with a heat exchange component (3), the windward side of the heat exchange component (3) faces the air inlet (23) of the housing, and the leeward side faces the air inlet on one side of the axial direction of the dual suction fan (20); A filter screen (4) is provided between the windward side of the heat exchange component (3) and the air inlet (23) of the housing. The filter screen (4) is used to filter the airflow flowing in from the air inlet (23) of the housing. A heating element (5) is provided between the leeward side of the heat exchange component (3) and the air inlet on one side of the axial direction of the dual suction fan (20).

8. The cabinet-type air conditioner according to claim 7, characterized in that, The heat exchange component (3) is a plate-shaped heat exchanger that extends along the height direction of the casing (2).

9. The cabinet-type air conditioner according to claim 7, characterized in that, The housing (2) includes a front panel (2a) facing the user and a rear panel (2b) opposite to the front panel (2a); The housing air inlet (23) is provided on the rear panel (2b); The housing (2) also includes: A left side panel (2e) and a right side panel (2f) are disposed between the front panel (2a) and the rear panel (2b), and the front panel (2a), the left side panel (2e), the rear panel (2b) and the right side panel (2f) are connected in sequence to form the housing (2).

10. The cabinet-type air conditioner according to claim 6, characterized in that, The air conditioner also includes: An upper air outlet frame (2c) and a lower air outlet frame (2d) are provided. The upper air outlet frame (2c) forms an upper air outlet duct, and the lower air outlet frame (2d) forms a lower air outlet duct. One end of the upper air outlet duct is connected to the first housing opening (10a) and the second housing opening (10b) of the upper air outlet component, and the other end is connected to the upper air outlet (21). One end of the lower air outlet duct is connected to the first housing opening (10a) and the second housing opening (10b) of the lower air outlet component, and the other end is connected to the lower air outlet (22). The air conditioner also includes: A top cover (2g) is provided on the top of the upper air outlet frame (2c) and a chassis (2h) is provided on the bottom of the lower air outlet frame (2d).

11. The cabinet air conditioner according to claim 6, wherein the cabinet air conditioner has a single top air outlet cooling mode, a single bottom air outlet heating mode, and a simultaneous top and bottom air outlet cooling or heating mode. When the cabinet air conditioner is running in the single top air outlet cooling mode, the volute movement mechanism (203) in the upper air duct component is controlled to slide to the first sliding position, the fan mounting cavity in the upper air duct component is divided into the first cavity and the second cavity, the volute movement mechanism (203) in the lower air duct component is controlled to slide to the second sliding position, the fan mounting cavity in the lower air duct component is divided into the third cavity and the fourth cavity, at this time the airflow driven by the dual suction fan (20) in the lower air duct component flows out through the auxiliary air outlet channel (1212) and then out through the first air outlet channel B (112) with the opening facing upward in the upper air duct component, the airflow driven by the dual suction fan (20) in the upper air duct component flows out through the first air outlet channel A (111) with the opening facing upward in the upper air duct component; When the cabinet air conditioner is operating in single-downward air outlet heating mode, the volute movement mechanism (203) in the upper air duct component is controlled to slide to the second sliding position, the fan mounting cavity in the upper air duct component is divided into the third cavity and the fourth cavity, the volute movement mechanism (203) in the lower air duct component is controlled to slide to the first sliding position, the fan mounting cavity in the lower air duct component is divided into the first cavity and the second cavity, at this time the airflow driven by the dual suction fan (20) in the upper air duct component flows out through the auxiliary air outlet channel (1212) and then out through the first downward-opening air outlet channel B (112) in the lower air duct component, the airflow driven by the dual suction fan (20) in the lower air duct component flows out downward through the first downward-opening air outlet channel A (111) in the lower air duct component; When the cabinet air conditioner is operating in cooling or heating mode with simultaneous airflow from the top and bottom, the volute motion mechanism (203) in the upper air duct component is controlled to slide to the first sliding position, and the fan mounting cavity in the upper air duct component is divided into the first cavity and the second cavity. The volute motion mechanism (203) in the lower air duct component is controlled to slide to the first sliding position, and the fan mounting cavity is divided into the first cavity and the second cavity. At this time, the airflow driven by the dual suction fan (20) in the upper air duct component flows out through the first air outlet channel A (111) with the opening facing upward in the upper air duct component, and the airflow driven by the dual suction fan (20) in the lower air duct component flows downward through the first air outlet channel A (111) with the opening facing downward in the lower air duct component.

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