Air duct assembly and cabinet type air conditioner indoor unit

Abstract

This utility model provides an air duct assembly and a cabinet-type air conditioner indoor unit. The air duct assembly includes a main shell and a secondary shell. The shell wall of the main shell forms a main upper air outlet, a main lower air outlet, and a main middle air outlet. The interior of the main shell forms a main upper air duct, an upper air blade cavity, a main middle air duct, a lower air blade cavity, and a main lower air duct. The secondary shell and the main shell enclose a secondary air duct. The upper air blade cavity, the upper air blade cavity outlet, the main upper air duct, and the main upper air outlet are sequentially connected to form a main upper air outlet path. The lower air blade cavity, the lower air blade cavity upper outlet, and the main air outlet are connected sequentially to form a main upper air outlet path. The main central air duct, main central air outlet, and secondary air duct are connected in sequence to form the secondary upper air outlet flow path; the lower air blade cavity, lower outlet of the lower air blade cavity, main lower air duct, and main lower air outlet are connected in sequence to form the main lower air outlet flow path; the main upper air outlet flow path and the main lower air outlet flow path are connected by a short path to reduce airflow resistance, increase air volume, and extend air delivery distance; the three flow paths of the main upper air outlet flow path, secondary upper air outlet flow path, and main lower air outlet flow path are set independently, and the upper and lower air outlets do not interfere with each other, thus improving the stability of air delivery.

Description

Technical Field

[0001] This utility model belongs to the field of ventilation technology, and in particular relates to a duct component and a cabinet-type air conditioner indoor unit. Background Technology

[0002] In existing ventilation equipment, the casing typically has an upper air outlet and a lower air outlet arranged vertically opposite each other, as well as an air inlet located between the upper and lower air outlets. Inside the casing, a single main air duct is formed, which connects to the upper air outlet, lower air outlet, and air inlet. A fan is installed within this main air duct to drive air through the upper air outlet for upward exhaust and through the lower air outlet for downward exhaust. However, because the fan's position is fixed and its distance from the upper and lower air outlets is relatively large, the airflow path from the fan to the air outlets is long. This results in a significant increase in airflow resistance, a decrease in air volume, and a limited air delivery distance. Utility Model Content

[0003] In view of this, the present invention provides an air duct assembly and a cabinet-type air conditioner indoor unit to solve the problems of large distances between the fan and the upper and lower air outlets in existing ventilation equipment, resulting in long air flow paths, low air volume and short air delivery distance.

[0004] This utility model provides a duct assembly, including a main shell and a secondary shell. The upper end of the shell wall of the main shell has a main upper air outlet, and the lower end of the shell wall of the main shell has a main lower air outlet. The interior of the main shell has a main upper air duct, an upper air blade cavity, a main middle air duct, a lower air blade cavity, and a main lower air duct arranged sequentially from top to bottom. The shell wall of the main shell has a main middle air outlet at a position corresponding to the main middle air duct. The interior of the main shell has an upper air blade cavity outlet at the upper end of the upper air blade cavity, and an upper outlet and a lower outlet of the lower air blade cavity at the upper and lower ends of the lower air blade cavity, respectively.

[0005] The secondary shell is disposed outside the main shell, and the secondary shell and the main shell enclose a secondary air duct; the secondary air duct extends from the main central air outlet to the main upper air outlet;

[0006] The upper wind vane cavity, the upper wind vane cavity outlet, the main upper wind duct, and the main upper wind outlet are sequentially connected to form the main upper air outlet path; the lower wind vane cavity, the lower wind vane cavity upper outlet, the main middle wind duct, the main middle wind outlet, and the auxiliary wind duct are sequentially connected to form the auxiliary upper air outlet path; the lower wind vane cavity, the lower wind vane cavity lower outlet, the main lower wind duct, and the main lower wind outlet are sequentially connected to form the main lower air outlet path.

[0007] Further optionally, a first windbreak structure is provided at the lower outlet of the lower blade cavity, the first windbreak structure having a first working position for closing the lower outlet of the lower blade cavity and a second working position for opening the lower outlet of the lower blade cavity;

[0008] When the first windbreak structure is in the first working position, the air duct assembly can achieve upward air discharge through the main upward air discharge path and the auxiliary upward air discharge path;

[0009] When the first windbreak structure is in the second working position, the air duct assembly can achieve upward air outlet through the main upper air outlet path and the secondary upper air outlet path, and achieve downward air outlet through the main lower air outlet path.

[0010] Further optionally, the shell wall of the main shell forms an upper wind blade cavity inlet at one axial end corresponding to the upper wind blade cavity and is closed at the other axial end corresponding to the upper wind blade cavity; the shell wall of the main shell forms a lower wind blade cavity inlet at one axial end corresponding to the lower wind blade cavity and is closed at the other axial end corresponding to the lower wind blade cavity.

[0011] The upper and lower blade cavity inlets are on the same side of the main shell, and the closed end of the upper blade cavity, the closed end of the lower blade cavity, and the main air outlet are on the same side of the main shell.

[0012] Further optionally, the main shell includes a volute and a volute cover arranged opposite to each other, the volute forming a closed end of the upper blade cavity, a closed end of the lower blade cavity and a main air inlet, and the volute and the secondary shell enclose the secondary air duct.

[0013] The volute has the upper blade cavity inlet and the lower blade cavity inlet.

[0014] Further optionally, an upper guide ring is provided at the inlet of the upper blade cavity, and an upper guide rib is provided on the upper guide ring, the upper guide rib being disposed near the outlet of the upper blade cavity; and / or,

[0015] The lower airflow chamber inlet is provided with a lower airflow guide ring, and the lower airflow guide ring is provided with a lower airflow guide rib, which is located near the lower outlet of the lower airflow chamber.

[0016] Further optionally, when the upper guide ring is provided with an upper guide rib, the upper guide rib is an arc-shaped structure, and the upper guide rib and the upper guide ring are coaxially arranged;

[0017] The arc length of the upper guide rib is L1, and the circumference of the upper guide ring is C1. L1 and C1 satisfy: 0.2≤L1 / C1≤0.25; and / or, the thickness of the upper guide rib is H1, and H1 satisfies: 10mm≤H1≤15mm.

[0018] Further optionally, when the lower guide ring is provided with a lower guide rib, the lower guide rib is an arc-shaped structure, and the lower guide rib and the lower guide ring are coaxially arranged;

[0019] The arc length of the lower guide rib is L2, and the circumference of the lower guide ring is C2. L2 and C2 satisfy: 0.2≤L2 / C2≤0.25; and / or, the thickness of the lower guide rib is H2, and H2 satisfies: 10mm≤H2≤15mm.

[0020] Alternatively, the interior of the main housing is provided with a rib at the outlet of the upper blade cavity, and the rib and the inlet of the upper blade cavity are located on the same side of the main housing.

[0021] Further optionally, the thickness of the rib is H3, wherein H3 satisfies: 10mm ≤ H3 ≤ 15mm; and / or,

[0022] The vertical width of the rib is b, where b satisfies: 40mm ≤ b ≤ 60mm; and / or,

[0023] The main shell's shell walls include a first shell wall, a second shell wall, and a third shell wall. The second and third shell walls are both connected to the first shell wall and are arranged opposite each other in the horizontal direction. A rib is provided on the first shell wall, with one end extending to the second shell wall and the other end extending to the third shell wall; and / or,

[0024] The distance between the lower edge of the rib and the axis of the upper blade cavity is s1, and s1 satisfies: 130mm≤s1≤160mm.

[0025] Further optionally, the axis of the upper blade cavity and the axis of the lower blade cavity are both horizontal, and the vertical distance between the axis of the upper blade cavity and the axis of the lower blade cavity is s2, wherein s2 satisfies: 550mm≤s2≤600mm.

[0026] Further optionally, the air duct assembly further includes an upper air outlet frame disposed on the top of the main housing and the secondary housing, the upper air outlet frame forming an upper air outlet duct; the upper ends of both the main upper air outlet and the secondary air duct are connected to the lower end of the upper air outlet duct; and / or,

[0027] The air duct assembly also includes a lower air outlet frame, which is disposed at the bottom of the main housing and forms a lower air outlet duct; the upper end of the main lower air outlet and the lower air outlet duct are connected.

[0028] Further optionally, the distance between the axis of the upper air blade cavity and the upper edge of the upper air outlet duct is s3, wherein s3 satisfies: 400mm≤s3≤500mm;

[0029] The distance between the axis of the lower blade cavity and the lower edge of the lower air outlet is s4, and s4 satisfies: 700mm≤s4≤800mm.

[0030] Further optionally, the air duct assembly further includes a housing, the upper end of which has an upper air outlet and the lower end of which has a lower air outlet; an installation cavity is formed inside the housing.

[0031] The upper air outlet frame, main shell, and lower air outlet frame are arranged sequentially from top to bottom in the mounting cavity. The upper end of the upper air outlet duct is connected to the upper air outlet, and the lower end of the lower air outlet duct is connected to the lower air outlet. The secondary shell is arranged in the mounting cavity and is located in front of the main shell. The secondary air duct and the upper air blade cavity are arranged opposite each other.

[0032] Further optionally, the air duct assembly further includes a functional component disposed within the mounting cavity, and the functional component is located in front of the main housing and below the secondary housing; the functional component has the function of at least one of introducing fresh air, humidifying, sterilizing, and lighting.

[0033] This utility model also provides a cabinet-type air conditioner indoor unit, including an indoor heat exchanger and the air duct assembly described in any of the above claims, wherein the indoor heat exchanger is disposed on the air inlet side of the upper and lower air duct chambers; the cabinet-type air conditioner indoor unit is provided with a cooling mode and a heating mode.

[0034] When the indoor unit of the cabinet air conditioner is in the cooling mode, both the main upper air outlet path and the auxiliary upper air outlet path output indoor air that has exchanged heat with the indoor heat exchanger upwards.

[0035] When the indoor unit of the cabinet air conditioner is in the heating mode, both the main upper air outlet path and the secondary upper air outlet path output a portion of the indoor air that has exchanged heat with the indoor heat exchanger upwards, and the main lower air outlet path outputs another portion of the indoor air that has exchanged heat with the indoor heat exchanger downwards.

[0036] Compared with the prior art, the main advantages of this utility model are:

[0037] The main upper air outlet path (upper blade cavity → main upper air outlet) and the main lower air outlet path (lower blade cavity → main lower air outlet) are connected by a shorter path, which reduces airflow resistance, increases air volume, extends air delivery distance, expands air delivery range, and reduces blade power consumption.

[0038] The system features three independent airflow paths: a main upper airflow path, a secondary upper airflow path, and a main lower airflow path. The upper and lower airflows do not interfere with each other, thus improving the stability of the air supply.

[0039] The main shell vertically integrates the main upper air duct, upper / lower fan blade cavity, main middle air duct, and main lower air duct, while the secondary shell only needs to wrap the outer wall of the main shell to form the secondary air duct; compared with traditional single-duct equipment, the size is reduced and it is suitable for installation in confined spaces.

[0040] The airflow from the main central duct is guided to the main upwind area through the secondary duct to achieve the "downwind blade cavity driven upward air outlet" mode; it supports 3 air outlet modes (main upward air outlet only, main downward air outlet only, and simultaneous upward and downward air outlet); the secondary upward air outlet flow path expands the coverage of the upward air outlet (especially for high-altitude air supply needs). Attached Figure Description

[0041] To more clearly illustrate the embodiments of this utility model 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.

[0042] 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 implementation conditions of this utility model. 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 this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0043] Figure 1a A schematic diagram of the internal structure of the air duct assembly (without upper and lower air outlet frames) provided by this utility model;

[0044] Figure 1b for Figure 1a Sectional view at point AA;

[0045] Figure 2a A left-side view of the internal structure of the air duct assembly (with an upper air outlet frame and a lower air outlet frame) provided by this utility model;

[0046] Figure 2b for Figure 2a Sectional view at point BB;

[0047] Figure 3a A rear view structural schematic diagram of an embodiment of the air duct assembly (without upper and lower air outlet frames) provided by this utility model;

[0048] Figure 3b for Figure 3a Enlarged view at point C;

[0049] Figure 3c for Figure 3a Enlarged view at point D;

[0050] Figure 4aA schematic diagram of the isometric structure of an embodiment of the air duct assembly (without upper and lower air outlet frames) provided by this utility model;

[0051] Figure 4b for Figure 4a Enlarged view at point E in the middle;

[0052] Figure 4c for Figure 4a Enlarged view at point F;

[0053] Figure 5a A schematic diagram of the internal structure of the air duct assembly (with an upper air outlet frame and a lower air outlet frame) provided by this utility model;

[0054] Figure 5b A cross-sectional structural schematic diagram of an embodiment of the air duct assembly (with an upper air outlet frame and a lower air outlet frame) provided by this utility model;

[0055] Figure 5c for Figure 5b Enlarged view at point G;

[0056] Figure 6 An exploded structural diagram of an embodiment of the cabinet-type air conditioner indoor unit (with an upper air outlet frame and a lower air outlet frame) provided by this utility model;

[0057] Figure 7a A schematic diagram of the main structure of an embodiment of the cabinet-type air conditioner indoor unit (with an upper air outlet frame and a lower air outlet frame) provided by this utility model;

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

[0059] Figure 7c for Figure 7b Enlarged view at point I;

[0060] Figure 8a A schematic diagram of the structure of an embodiment of the cabinet-type air conditioner indoor unit (without upper and lower air outlet frames) provided by this utility model in cooling mode;

[0061] Figure 8b A schematic diagram of the structure of an embodiment of the cabinet-type air conditioner indoor unit (without upper and lower air outlet frames) provided by this utility model in heating mode;

[0062] Figure 9a A schematic diagram of an embodiment of the cabinet-type air conditioner indoor unit (with an upper air outlet frame and a lower air outlet frame) provided by this utility model in cooling mode;

[0063] Figure 9b A schematic diagram of an embodiment of the cabinet-type air conditioner indoor unit (with an upper air outlet frame and a lower air outlet frame) provided by this utility model in heating mode;

[0064] In the picture:

[0065] 1-Main shell; 11-Vortex shell; 12-Vortex cover; 131-Main upper air inlet; 132-Main middle air inlet; 133-Main lower air inlet; 141-Main upper air duct; 142-Upper air blade cavity; 143-Main middle air duct; 144-Lower air blade cavity; 145-Main lower air duct; 151-Upper air blade cavity outlet; 152-Lower air blade cavity upper outlet; 153-Lower air blade cavity lower outlet; 161-Upper air blade cavity inlet; 162-Lower air blade cavity inlet; 171-Upper guide ring; 172-Upper guide rib; 173-Lower guide ring; 174-Lower guide rib; 18-Protruding rib; 191-First shell wall; 192-Second shell wall; 193-Third shell wall;

[0066] 21-Secondary shell; 211-Secondary air duct; 22-First windbreak structure;

[0067] 31-Upper centrifugal fan blade; 32-Lower centrifugal fan blade;

[0068] 41-Upper air outlet frame; 411-Upper air outlet duct; 42-Lower air outlet frame; 421-Lower air outlet duct; 43-Chassis;

[0069] 5-Indoor heat exchanger. Detailed Implementation

[0070] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0071] The terminology used in the embodiments of this utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model. The singular forms “a,” “said,” and “the” used in the embodiments of this utility model 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.

[0072] 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.

[0073] 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.

[0074] In existing ventilation equipment, a main air duct is formed inside the casing, which is connected to the upper air outlet, lower air outlet, and air inlet. The fan is installed in this main air duct, achieving upper air outlet and lower air outlet. However, the distance between the fan and the upper and lower air outlets is relatively large, resulting in a long airflow path from the fan to the air outlet, which significantly increases airflow resistance, reduces air volume, and limits the air delivery distance.

[0075] This utility model creatively provides a duct assembly, including a main shell and a secondary shell. The upper end of the shell wall of the main shell has a main upper air outlet, the lower end of the shell wall has a main lower air outlet, and a main middle air outlet is formed between the main upper air outlet and the main lower air outlet. The interior of the main shell has a main upper air duct, an upper blade cavity, a main middle air duct, a lower blade cavity, and a main lower air duct arranged sequentially from top to bottom. The secondary shell is disposed outside the main shell and surrounds the main shell to form a secondary air duct. The upper blade cavity, the upper blade cavity outlet, the main upper air duct, and the main upper air outlet are sequentially connected to form a main upper air outlet path. The lower blade cavity, the lower blade cavity upper outlet, the main middle air duct, the main middle air outlet, and the secondary air duct are sequentially connected to form a secondary upper air outlet path. The lower blade cavity, the lower blade cavity lower outlet, the main lower air duct, and the main lower air outlet are sequentially connected to form a main lower air outlet path.

[0076] Both the main upper air outlet path and the main lower air outlet path are connected by a short path, which reduces airflow resistance, increases air volume, extends air delivery distance, expands air delivery range, and reduces fan blade power consumption. The main upper air outlet path, the auxiliary upper air outlet path, and the main lower air outlet path are set up independently, so the upper and lower air outlets do not interfere with each other, and the air delivery stability is improved.

[0077] <Airflow Components>

[0078] like Figures 1a to 5c As shown, this embodiment provides a duct assembly, including a main housing 1 and a secondary housing.

[0079] 21. A main upwind opening 131 is formed at the upper end of the shell wall of the main shell 1, and a main downwind opening 133 is formed at the lower end of the shell wall of the main shell 1. The interior of the main shell 1 is formed with a main upwind duct 141, an upwind blade cavity 142, a main middle wind duct 143, a downwind blade cavity 144, and a main downwind duct 145 arranged sequentially from top to bottom. A main middle wind opening 132 is formed at the shell wall of the main shell 1 at the position corresponding to the main middle wind duct 143. An upwind blade cavity outlet 151 is formed at the upper end of the upwind blade cavity 142, and an upwind blade cavity upper outlet 152 and a downwind blade cavity lower outlet 153 are formed at the upper and lower ends of the downwind blade cavity 144, respectively.

[0080] The secondary shell 21 is disposed outside the main shell 1, and the secondary shell 21 and the main shell 1 enclose a secondary air duct 211; the secondary air duct 211 extends from the main central air outlet 132 to the main upper air outlet 131.

[0081] The upper wind vane cavity 142, the upper wind vane cavity outlet 151, the main upper wind duct 141, and the main upper wind inlet 131 are connected in sequence to form the main upper air outlet path; the lower wind vane cavity 144, the lower wind vane cavity upper outlet 152, the main middle wind duct 143, the main middle wind inlet 132, and the auxiliary wind duct 211 are connected in sequence to form the auxiliary upper air outlet path; the lower wind vane cavity 144, the lower wind vane cavity lower outlet 153, the main lower wind duct 145, and the main lower wind inlet 133 are connected in sequence to form the main lower air outlet path.

[0082] Air in the upper air blade cavity 142 can be discharged upward through the main upper air outlet path, a portion of air in the lower air blade cavity 144 can be discharged upward through the auxiliary upper air outlet path, and another portion of air in the lower air blade cavity 144 can be discharged downward through the main lower air outlet path. Compared with the auxiliary air duct 211 in traditional ventilation equipment, the length of the auxiliary air duct 211 in this application is reduced by half, avoiding air volume loss in the auxiliary air duct 211. This effectively solves the problem that when traditional ventilation equipment achieves upper air outlet, a portion of the air needs to be discharged through the main lower air duct 145 to the main upper air outlet 131, resulting in small air volume and short air outlet distance. It also reduces the space occupied by the air duct components, providing installation space for the newly added functional components.

[0083] Specifically, a main upper air outlet 131 is formed at the top of the shell wall of the main shell 1, and a main lower air outlet 133 is formed at the bottom of the shell wall of the main shell 1; the axis of the upper air blade cavity 142 and the axis of the lower air blade cavity 144 are both horizontal, and the vertical distance between the axis of the upper air blade cavity 142 and the axis of the lower air blade cavity 144 is s2, which satisfies: 550mm≤s2≤600mm; the position between the upper air blade cavity 142 and the lower air blade cavity 144 is optimized to reduce the mutual interference between the air outlet of the auxiliary air duct 211 and the air outlet of the main upper air outlet 131, while shortening the length of the main upper air outlet flow path, the auxiliary upper air outlet flow path and the main lower air outlet flow path, ensuring the air volume of the air outlet of the air duct assembly, and solving the problem of air volume attenuation of the air duct assembly caused by the unreasonable distance between the upper air blade cavity 142 and the lower air blade cavity 144;

[0084] The upper fan blade cavity 142 is equipped with a rotatable upper centrifugal fan blade 31, and the lower fan blade cavity 144 is equipped with a rotatable lower centrifugal fan blade 32; the secondary shell 21 is located in front of the main shell 1, and the secondary air duct 211 and the upper fan blade cavity 142 are arranged opposite each other; the secondary shell 21 is a foam baffle, one end of which completely covers the main air inlet 132, and the other end extends upward to the main upper air inlet 131; the baffle and the main shell 1 are sealed together to form the secondary air duct 211, which realizes upward airflow;

[0085] Specifically, the outer diameter of both the upper and lower wind vanes is 246 mm.

[0086] The following further describes the windproof structure at the lower outlet 153 of the lower blade cavity. A first windproof structure 22 is provided at the lower outlet 153 of the lower blade cavity. The first windproof structure 22 has a first working position that closes the lower outlet 153 of the lower blade cavity and a second working position that opens the lower outlet 153 of the lower blade cavity.

[0087] When the first windbreak structure 22 is in the first working position, the air duct assembly can achieve upward air discharge through the main upward air discharge path and the auxiliary upward air discharge path.

[0088] When the first windbreak structure 22 is in the second working position, the air duct assembly can achieve upward air discharge through the main upper air discharge path and the auxiliary upper air discharge path, and achieve downward air discharge through the main lower air discharge path.

[0089] Specifically, the first windbreak structure 22 includes a first windbreak plate and a first drive motor. The first windbreak plate includes a first rotating end and a first free end that are arranged opposite to each other. The first rotating end is rotatably mounted on the main housing 1. The output shaft of the first drive motor is driven to connect with the first rotating end. When the first drive motor is running, the first windbreak plate rotates, thereby opening or closing the lower outlet 153 of the lower air blade cavity or adjusting the air volume of the lower outlet 153 of the lower air blade cavity.

[0090] The following further explains the air inlets of the upper blade cavity 142 and the lower blade cavity 144. The shell wall of the main shell 1 forms an upper blade cavity inlet 161 at one end of the axial direction corresponding to the upper blade cavity 142, and is closed at the other end of the axial direction corresponding to the upper blade cavity 142.

[0091] The shell wall of the main shell 1 has a lower blade cavity inlet 162 formed at one end of the axial direction corresponding to the lower blade cavity 144, and is closed at the other end of the axial direction corresponding to the lower blade cavity 144.

[0092] The upper wind vane cavity inlet 161 and the lower wind vane cavity inlet 162 are on the same side of the main shell 1. The closed end of the upper wind vane cavity 142, the closed end of the lower wind vane cavity 144 and the main air outlet 132 are on the same side of the main shell 1.

[0093] When the upper fan blade rotates, indoor air can enter the upper fan blade cavity 142 through the upper fan blade cavity inlet 161, and then flow sequentially through the upper fan blade cavity outlet 151, the main upper air duct 141, and the main upper air outlet 131 before being discharged; when the lower fan blade rotates, indoor air can enter the lower fan blade cavity 144 through the lower fan blade cavity inlet 162; when the first windbreak structure 22 is in the first working position, the air in the lower fan blade cavity 144 flows sequentially through the lower fan blade cavity upper outlet 152 and the secondary air duct 211 before being discharged; when the first windbreak structure 22 is in the second working position... At this time, a portion of the air in the lower blade cavity 144 flows sequentially through the upper outlet 152 and the secondary air duct 211 of the lower blade cavity and is discharged; another portion of the air in the lower blade cavity 144 flows sequentially through the lower outlet 153 and the main lower air duct 145 of the lower blade cavity and is discharged; in this way, it can be achieved that only the main upper air outlet flow path and the secondary upper air outlet flow path discharge air at the same time, so that both blades work to deliver air at the same time when discharging air at the top, or that both the main upper air outlet flow path and the secondary upper air outlet flow path discharge air at the same time, and the main lower air outlet flow path discharges air at the bottom, so that air is discharged from the top and bottom at the same time.

[0094] The following further explains the windproof structure at the upper outlet 152 of the lower blade cavity. A second windproof structure is provided at the upper outlet 152 of the lower blade cavity. The second windproof structure has a third working position that closes the upper outlet 152 of the lower blade cavity and a fourth working position that opens the upper outlet 152 of the lower blade cavity.

[0095] When the second windbreak structure is in the third working position, the air duct assembly can achieve downward air discharge through the main downward air outlet path;

[0096] When the first windbreak structure 22 is in the fourth working position, the air duct assembly can achieve upward air discharge through the main upper air discharge path and the auxiliary upper air discharge path, and achieve downward air discharge through the main lower air discharge path.

[0097] Specifically, the second windbreak structure includes a second windbreak plate and a second drive motor. The second windbreak plate includes a second rotating end and a second free end. The second rotating end is rotatably mounted on the main housing 1. The output shaft of the second drive motor is driven to connect with the second rotating end. When the second drive motor is running, the second windbreak plate rotates, thereby opening or closing the upper outlet 152 of the lower air blade cavity or adjusting the air volume of the upper outlet 152 of the lower air blade cavity.

[0098] The specific structure of the main shell 1 is described below. The main shell 1 includes a volute 11 and a volute cover 12 arranged opposite to each other. The volute 11 forms a closed end of the upper blade cavity 142, a closed end of the lower blade cavity 144, and a main air inlet 132. The volute 11 and the secondary shell 21 form a secondary air duct 211. The volute cover 12 forms an upper blade cavity inlet 161 and a lower blade cavity inlet 162.

[0099] Specifically, the volute 11 and the volute cover 12 are arranged opposite each other, with the volute 11 in front and the volute cover 12 behind. The closed end of the upper blade cavity 142, the closed end of the lower blade cavity 144, and the main air inlet 132 are located on the front side of the volute 11. The secondary shell 21 is located in front of the volute 11. The upper blade cavity inlet 161 and the lower blade cavity inlet 162 are located on the rear side of the volute cover 12. That is, indoor air enters the upper blade cavity 142 and the lower blade cavity 144 through the rear side of the main shell 1. A part of the air in the lower blade cavity 144 flows to the front side of the main shell 1 through the main air inlet 132 and then flows to the top of the main shell 1.

[0100] The following describes the guide ring at the inlet 161 of the upper air blade cavity. An upper guide ring 171 is provided at the inlet 161 of the upper air blade cavity, and an upper guide rib 172 is provided on the upper guide ring 171. The upper guide rib 172 is set close to the outlet 151 of the upper air blade cavity, which effectively changes the velocity field, pressure and velocity when the air enters at the inlet 161 of the upper air blade cavity, so as to achieve a relatively uniform air intake velocity and solve the problem of air intake friction caused by excessive air intake velocity at the inlet 161 of the upper air blade cavity.

[0101] Specifically, the upper guide rib 172 has an arc-shaped structure, and the upper guide rib 172 and the upper guide ring 171 are coaxially arranged;

[0102] The arc length of the upper guide rib 172 is L1, and the circumference of the upper guide ring 171 is C1. L1 and C1 satisfy: 0.2≤L1 / C1≤0.25; and / or, the thickness of the upper guide rib 172 is H1, and H1 satisfies: 10mm≤H1≤15mm.

[0103] The following describes the guide ring at the inlet 162 of the lower blade cavity. A lower guide ring 173 is provided at the inlet 162 of the lower blade cavity, and a lower guide rib 174 is provided on the lower guide ring 173. The lower guide rib 174 is set close to the lower outlet 153 of the lower blade cavity, which effectively changes the velocity field, pressure and velocity when the air enters at the inlet 162 of the lower blade cavity, so as to achieve a relatively uniform air intake velocity and solve the problem of air intake friction caused by excessive air intake velocity at the inlet 162 of the lower blade cavity.

[0104] Specifically, the lower guide rib 174 has an arc-shaped structure, and the lower guide rib 174 and the lower guide ring 173 are coaxially arranged;

[0105] The arc length of the lower guide rib 174 is L2, and the circumference of the lower guide ring 173 is C2. L2 and C2 satisfy: 0.2≤L2 / C2≤0.25; and / or, the thickness of the lower guide rib 174 is H2, and H2 satisfies: 10mm≤H2≤15mm.

[0106] The following describes the rib 18 at the outlet 151 of the upper wind blade cavity. The main shell 1 has a rib 18 at the outlet 151 of the upper wind blade cavity. The rib 18 and the inlet 161 of the upper wind blade cavity are located on the same side of the main shell 1. This effectively changes the air velocity field, pressure and speed when the air is discharged from the outlet 151 of the upper wind blade cavity, thereby reducing the air friction of the air entering and exiting the main upper air duct 141, reducing the airflow noise in the main upper air duct 141 and improving the noise quality.

[0107] Specifically, the thickness of the rib 18 is H3, where H3 satisfies: 10mm ≤ H3 ≤ 15mm; and / or,

[0108] The vertical width of the protruding rib 18 is b, where b satisfies: 40mm ≤ b ≤ 60mm; and / or,

[0109] Furthermore, the shell walls of the main shell 1 include a first shell wall 191, a second shell wall 192, and a third shell wall 193. The second shell wall 192 and the third shell wall 193 are both connected to the first shell wall 191 and are arranged opposite each other in the horizontal direction. A rib 18 is provided on the first shell wall 191, with one end of the rib 18 extending to the second shell wall 192 and the other end extending to the third shell wall 193; and / or,

[0110] The distance between the lower edge of the rib 18 and the axis of the upper blade cavity 142 is s1, and s1 satisfies: 130mm≤s1≤160mm.

[0111] In addition, the air duct assembly also includes an upper air outlet frame 41, which is disposed on the top of the main housing 1 and the secondary housing 21, and forms an upper air outlet duct 411; the upper ends of the main upper air outlet 131 and the secondary air duct 211 are both connected to the lower end of the upper air outlet 411; that is, the air discharged from the main upper air outlet 131 and the secondary air duct 211 can converge in the upper air outlet 411; and / or,

[0112] The air duct assembly also includes a lower air outlet frame 42, which is located at the bottom of the main housing 1 and forms a lower air outlet duct 421; the main lower air outlet 133 and the upper end of the lower air outlet duct 421 are connected.

[0113] Furthermore, the distance between the axis of the upper air blade cavity 142 and the upper edge of the upper air outlet duct 411 is s3, and s3 satisfies: 400mm≤s3≤500mm; the profile of the upper air blade cavity 142 is preserved, and the distance between the axis of the upper air blade cavity 142 and the upper edge of the upper air outlet duct 411 is reduced to avoid airflow loss.

[0114] The distance between the axis of the lower air blade cavity 144 and the lower edge of the lower air outlet duct 421 is s4, and s4 satisfies: 700mm≤s4≤800mm; the distance between the upper air blade cavity 142 and the upper air outlet duct 411 and the lower air blade cavity 144 and the lower air outlet duct 421 are optimized to solve the problem of airflow attenuation caused by unreasonable design of the distance between the upper air blade cavity 142 and the upper air outlet duct 411 and the lower air blade cavity 144 and the lower air outlet duct 421.

[0115] Specifically, the air duct assembly also includes a chassis 43, which is located at the bottom of the lower air outlet frame 42 and is used to support the lower air outlet frame 42; the chassis 43 and the lower air outlet frame 42 can be integrally formed or separately formed.

[0116] The following describes the housing of the air duct assembly. The air duct assembly also includes a housing. An upper air outlet is formed at the upper end of the housing, and a lower air outlet is formed at the lower end of the housing. An installation cavity is formed inside the housing.

[0117] The upper air outlet frame 41, the main shell 1, and the lower air outlet frame 42 are arranged in the mounting cavity from top to bottom. The upper end of the upper air outlet duct 411 is connected to the upper air outlet, and the lower end of the lower air outlet duct 421 is connected to the lower air outlet. The secondary shell 21 is arranged in the mounting cavity and is located in front of the main shell 1.

[0118] The main upper air inlet 131, upper air outlet 411, and upper air outlet are connected in sequence. When the upper air blade rotates, indoor air enters the upper air blade cavity 142 through the upper air blade cavity inlet 161. The air in the upper air blade cavity 142 flows through the main upper air outlet flow path, upper air outlet 411, and upper air outlet in sequence and is then discharged. The secondary air duct 211, upper air outlet 411, and upper air outlet are connected in sequence. When the lower air blade rotates, indoor air enters the lower air blade cavity 144 through the lower air blade cavity inlet 162. A portion of the air in the lower air blade cavity 144 flows through the secondary upper air outlet flow path, upper air outlet 411, and upper air outlet in sequence and is then discharged. The other portion of the air in the lower air blade cavity 144 flows through the main lower air outlet flow path, lower air outlet 421, and lower air outlet in sequence and is then discharged.

[0119] The duct assembly also includes functional components, which are disposed within the mounting cavity and located in front of the main housing 1 and below the secondary housing 21. The functions of the functional components include at least one of introducing fresh air, humidifying, sterilizing, and lighting. Compared to the dual centrifugal fan setup in traditional ventilation equipment, the secondary housing 21 in this application has a certain assembly space below it, allowing for the addition of functional components according to actual needs, thus meeting the multi-functional requirements of users and solving the problem of large space occupation of duct assemblies in traditional ventilation equipment.

[0120] <Indoor unit of cabinet air conditioner>

[0121] like Figures 6 to 9bAs shown, this embodiment also provides a cabinet-type air conditioner indoor unit, including an indoor heat exchanger 5 and the air duct assembly described in any of the above-mentioned embodiments. The indoor heat exchanger 5 is disposed on the air inlet side of the upper air blade cavity 142 and the lower air blade cavity 144; that is, the indoor heat exchanger 5 is disposed behind the upper air blade cavity inlet 161 and the lower air blade cavity inlet 162. When the upper air blade rotates, indoor air flows through the indoor heat exchanger 5 and exchanges heat with the indoor heat exchanger 5. The air after heat exchange enters the upper air blade cavity 142 through the upper air blade cavity inlet 161. When the lower air blade rotates, indoor air flows through the indoor heat exchanger 5 and exchanges heat with the indoor heat exchanger 5. The air after heat exchange enters the lower air blade cavity 144 through the lower air blade cavity inlet 162.

[0122] The indoor unit of the cabinet air conditioner has both cooling and heating modes;

[0123] When the indoor unit of the cabinet air conditioner is in cooling mode, both the main upper air outlet path and the auxiliary upper air outlet path output indoor air that has undergone heat exchange with the indoor heat exchanger 5 upwards; that is, the first wind deflector structure 22 is in the first working position, and both the upper and lower fan blades rotate. The indoor air flows through the indoor heat exchanger 5 and exchanges heat with it. A portion of the air after heat exchange enters the upper fan blade cavity 142 through the upper fan blade cavity inlet 161. The air in the upper fan blade cavity 142 flows sequentially through the main upper air outlet path, the upper air outlet duct 411, and the upper air outlet... The air is discharged through the vent; another part of the air after heat exchange enters the lower air blade cavity 144 through the lower air blade cavity inlet 162, and the air in the lower air blade cavity 144 flows through the secondary upper air outlet path, the upper air outlet duct 411 and the upper air outlet and is discharged; in this way, both the main upper air outlet path and the secondary upper air outlet path output the indoor air after heat exchange with the indoor heat exchanger 5 upwards; effectively supplementing and increasing the air volume of the main upper air outlet 131, so that the dual air blades provide air volume when the air is discharged upwards, thereby greatly increasing the air volume discharged upwards during cooling;

[0124] When the indoor unit of the cabinet air conditioner is in heating mode, both the main upper air outlet and the secondary upper air outlet both output a portion of the indoor air after heat exchange with the indoor heat exchanger 5 upwards, and the main lower air outlet outputs another portion of the indoor air after heat exchange with the indoor heat exchanger 5 downwards; that is, the first baffle structure 22 is in the second working position, with both the upper and lower fan blades rotating, and the indoor air flows through the indoor heat exchanger 5 and exchanges heat with it. A portion of the air after heat exchange enters the upper fan blade cavity 142 through the upper fan blade cavity inlet 161, and the air in the upper fan blade cavity 142 flows sequentially through the main upper air outlet and the upper air outlet duct 41. 1. The air is discharged from the upper air outlet; another part of the air after heat exchange enters the lower air outlet cavity 144 through the lower air outlet cavity inlet 162. A part of the air in the lower air outlet cavity 144 flows through the secondary upper air outlet flow path, the upper air outlet duct 411 and the upper air outlet and is discharged; another part of the air in the lower air outlet cavity 144 flows through the main lower air outlet flow path, the lower air outlet duct 421 and the lower air outlet and is discharged; in this way, the main upper air outlet flow path and the secondary upper air outlet flow path both output a part of the indoor air after heat exchange with the indoor heat exchanger 5 upwards, and the main lower air outlet flow path outputs another part of the indoor air after heat exchange with the indoor heat exchanger 5 downwards.

[0125] In summary, the indoor unit of the cabinet air conditioner achieves upward airflow through the main and secondary upper airflow paths in cooling mode, and upward airflow through the main and secondary upper airflow paths and downward airflow through the main and lower airflow paths in heating mode. The new duct layout shortens the airflow path, increases the air volume, and extends the air delivery distance, solving the problems of low air volume and poor performance in traditional cabinet air conditioner indoor units. Furthermore, the addition of guide ribs and raised ribs (18) alters the air velocity field and pressure, resulting in more uniform airflow and reduced noise, thus resolving the hissing noise problem associated with traditional cabinet air conditioner indoor units.

[0126] By designing the windbreak structure, the basic conditions for the formation of the high-efficiency secondary air duct 211 were established, and the stroke of the secondary air duct 211 was reduced by at least half. This also reduced the space occupied by the air duct components, laying a solid foundation for the multi-functionality of the cabinet air conditioner indoor unit. By setting multi-functional components below the secondary casing 21, multi-functional needs are met, realizing the diversification of functions of the cabinet air conditioner indoor unit. The distance between the fan blade cavity and the air outlet was rearranged, especially the positions of the main central air outlet 132 and the main upper air outlet 131, to avoid the main central air outlet 132 being too far from the main upper air outlet. The proximity of the main air outlet 131 results in a higher air velocity in the secondary air duct 211, which mixes and interferes with the airflow from the main upper air outlet 131, leading to a decrease in airflow volume. This avoids the loss of airflow volume caused by the increased distance between the main middle air outlet 132 and the main upper air outlet 131 in traditional cabinet air conditioner indoor units. The main upper air outlet 131 is connected to the upper air outlet duct 411, and the main lower air outlet 133 is connected to the lower air outlet duct 421. This maintains the complete appearance of the front of the unit while achieving a high level of comfort with cold air sinking and hot air rising.

[0127] In summary, the cabinet-type air conditioner indoor unit of this application has the characteristics of large air volume, low noise, high performance and diversified functions, which solves the problems of low air volume and poor performance of traditional cabinet-type air conditioner indoor units, improves the phenomenon of hissing sound in the air duct, and solves the problem of large space occupation of the air duct components.

[0128] 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 duct assembly, characterized in that, The system includes a main shell (1) and a secondary shell (21). The upper end of the shell wall of the main shell (1) has a main upper air inlet (131), and the lower end of the shell wall of the main shell (1) has a main lower air inlet (133). The interior of the main shell (1) has a main upper air duct (141), an upper air blade cavity (142), a main middle air duct (143), a lower air blade cavity (144), and a main lower air duct (145) arranged sequentially from top to bottom. The shell wall of the main shell (1) has a main middle air inlet (132) at a position corresponding to the main middle air duct (143). The interior of the main shell (1) has an upper air blade cavity outlet (151) at the upper end of the upper air blade cavity (142), and an upper lower air blade cavity outlet (152) and a lower lower air blade cavity outlet (153) at the upper and lower ends of the lower air blade cavity (144), respectively. The sub-shell (21) is disposed outside the main shell (1), and the sub-shell (21) and the main shell (1) enclose a sub-air duct (211); the sub-air duct (211) extends from the main central air outlet (132) to the main upper air outlet (131); The upper wind vane cavity (142), upper wind vane cavity outlet (151), main upper wind duct (141) and main upper wind inlet (131) are connected in sequence to form a main upper air outlet path. The lower wind vane cavity (144), lower wind vane cavity upper outlet (152), main middle wind duct (143), main middle wind inlet (132) and auxiliary wind duct (211) are connected in sequence to form an auxiliary upper air outlet path. The lower wind vane cavity (144), lower wind vane cavity lower outlet (153), main lower wind duct (145) and main lower wind inlet (133) are connected in sequence to form a main lower air outlet path.

2. The air duct assembly according to claim 1, characterized in that, A first windbreak structure (22) is provided at the lower outlet (153) of the lower blade cavity. The first windbreak structure (22) has a first working position that closes the lower outlet (153) of the lower blade cavity and a second working position that opens the lower outlet (153) of the lower blade cavity. When the first windbreak structure (22) is in the first working position, the air duct assembly can achieve upward air outlet through the main upward air outlet path and the auxiliary upward air outlet path; When the first windbreak structure (22) is in the second working position, the air duct assembly can achieve upward air outlet through the main upper air outlet path and the auxiliary upper air outlet path, and achieve downward air outlet through the main lower air outlet path.

3. The air duct assembly according to claim 1, characterized in that, The shell wall of the main shell (1) has an upper blade cavity inlet (161) at one axial end corresponding to the upper blade cavity (142), and is closed at the other axial end corresponding to the upper blade cavity (142); the shell wall of the main shell (1) has a lower blade cavity inlet (162) at one axial end corresponding to the lower blade cavity (144), and is closed at the other axial end corresponding to the lower blade cavity (144); The upper blade cavity inlet (161) and the lower blade cavity inlet (162) are on the same side of the main shell (1), and the closed end of the upper blade cavity (142), the closed end of the lower blade cavity (144), and the main air inlet (132) are on the same side of the main shell (1).

4. The air duct assembly according to claim 3, characterized in that, The main shell (1) includes a volute (11) and a volute cover (12) arranged opposite to each other. The volute (11) forms a closed end of the upper blade cavity (142), a closed end of the lower blade cavity (144), and a main air inlet (132). The volute (11) and the secondary shell (21) surround the secondary air duct (211). The volute (12) has the upper blade cavity inlet (161) and the lower blade cavity inlet (162).

5. The air duct assembly according to claim 3, characterized in that, An upper guide ring (171) is provided at the inlet (161) of the upper blade cavity, and an upper guide rib (172) is provided on the upper guide ring (171), the upper guide rib (172) being disposed near the outlet (151) of the upper blade cavity; and / or, A lower guide ring (173) is provided at the inlet (162) of the lower blade cavity, and a lower guide rib (174) is provided on the lower guide ring (173). The lower guide rib (174) is located near the lower outlet (153) of the lower blade cavity.

6. The air duct assembly according to claim 5, characterized in that, When the upper guide ring (171) is provided with an upper guide rib (172), the upper guide rib (172) is an arc-shaped structure, and the upper guide rib (172) and the upper guide ring (171) are coaxially arranged; The arc length of the upper guide rib (172) is L1, and the circumference of the upper guide ring (171) is C1. L1 and C1 satisfy: 0.2≤L1 / C1≤0.25; and / or, the thickness of the upper guide rib (172) is H1, and H1 satisfies: 10mm≤H1≤15mm.

7. The air duct assembly according to claim 5, characterized in that, When the lower guide ring (173) is provided with a lower guide rib (174), the lower guide rib (174) is an arc-shaped structure, and the lower guide rib (174) and the lower guide ring (173) are coaxially arranged; The arc length of the lower guide rib (174) is L2, and the circumference of the lower guide ring (173) is C2. L2 and C2 satisfy: 0.2≤L2 / C2≤0.25; and / or, the thickness of the lower guide rib (174) is H2, and H2 satisfies: 10mm≤H2≤15mm.

8. The air duct assembly according to claim 3, characterized in that, The interior of the main shell (1) is provided with a rib (18) at the outlet (151) of the upper blade cavity, and the rib (18) and the inlet (161) of the upper blade cavity are located on the same side of the main shell (1).

9. The air duct assembly according to claim 8, characterized in that, The thickness of the rib (18) is H3, wherein H3 satisfies: 10mm ≤ H3 ≤ 15mm; and / or, The vertical width of the rib (18) is b, where b satisfies: 40mm ≤ b ≤ 60mm; and / or, The shell walls of the main shell (1) include a first shell wall (191), a second shell wall (192), and a third shell wall (193). The second shell wall (192) and the third shell wall (193) are both connected to the first shell wall (191) and are arranged opposite each other in the horizontal direction. The rib (18) is provided on the first shell wall (191), and one end of the rib (18) extends to the second shell wall (192), and the other end of the rib (18) extends to the third shell wall (193); and / or, The distance between the lower edge of the rib (18) and the axis of the upper blade cavity (142) is s1, and s1 satisfies: 130mm≤s1≤160mm.

10. The air duct assembly according to claim 1, characterized in that, The axis of the upper blade cavity (142) and the axis of the lower blade cavity (144) are both horizontal, and the vertical distance between the axis of the upper blade cavity (142) and the axis of the lower blade cavity (144) is s2, wherein s2 satisfies: 550mm≤s2≤600mm.

11. The air duct assembly according to claim 1, characterized in that, It also includes an upper air outlet frame (41), which is disposed on the top of the main shell (1) and the secondary shell (21), and the upper air outlet frame (41) forms an upper air outlet duct (411); the upper ends of the main upper air outlet (131) and the secondary air duct (211) are both connected to the lower end of the upper air outlet duct (411); and / or, The air duct assembly also includes a lower air outlet frame (42), which is disposed at the bottom of the main shell (1) and forms a lower air outlet duct (421); the upper ends of the main lower air outlet (133) and the lower air outlet duct (421) are connected.

12. The air duct assembly according to claim 11, characterized in that, The distance between the axis of the upper air blade cavity (142) and the upper edge of the upper air outlet duct (411) is s3, and s3 satisfies: 400mm≤s3≤500mm; The distance between the axis of the lower blade cavity (144) and the lower edge of the lower air outlet duct (421) is s4, and s4 satisfies: 700mm≤s4≤800mm.

13. The air duct assembly according to claim 11, characterized in that, It also includes a housing, with an upper air outlet at the upper end and a lower air outlet at the lower end; the housing has an installation cavity inside. The upper air outlet frame (41), the main shell (1), and the lower air outlet frame (42) are arranged sequentially from top to bottom in the mounting cavity. The upper end of the upper air outlet duct (411) is connected to the upper air outlet, and the lower end of the lower air outlet duct (421) is connected to the lower air outlet. The secondary shell (21) is arranged in the mounting cavity and is located in front of the main shell (1). The secondary air outlet duct (211) and the upper air blade cavity (142) are arranged opposite each other.

14. The air duct assembly according to claim 13, characterized in that, It also includes functional components disposed within the mounting cavity and located in front of the main housing (1) and below the sub-housing (21); the functions of the functional components include at least one of introducing fresh air, humidifying, sterilizing and lighting.

15. A cabinet-type air conditioner indoor unit, characterized in that, The air conditioner includes an indoor heat exchanger (5) and a duct assembly as described in any one of claims 1 to 14, wherein the indoor heat exchanger (5) is disposed on the air inlet side of the upper air blade cavity (142) and the lower air blade cavity (144); the indoor unit of the cabinet air conditioner is provided with a cooling mode and a heating mode. When the indoor unit of the cabinet air conditioner is in the cooling mode, both the main upper air outlet path and the auxiliary upper air outlet path output the indoor air that has exchanged heat with the indoor heat exchanger (5) upwards. When the indoor unit of the cabinet air conditioner is in the heating mode, the main upper air outlet path and the auxiliary upper air outlet path both output a portion of the indoor air after heat exchange with the indoor heat exchanger (5) upwards, and the main lower air outlet path outputs another portion of the indoor air after heat exchange with the indoor heat exchanger (5) downwards.

Images