Air conditioner indoor unit and air conditioner

Abstract

This application discloses an indoor air conditioning unit and an air conditioner. The indoor air conditioning unit has a movable damper on its casing, which is used to open or close a first air outlet of the casing. When the damper opens the first air outlet, the damper and the first side wall of the casing are spaced apart to form a vortex cavity. A movable first partition is provided inside the vortex cavity, which divides the vortex cavity into a vortex duct and a return duct. Part of the airflow entering the vortex cavity circulates between the vortex duct and the return duct, mixing with the airflow at the fan outlet to generate self-excited oscillation and achieve diffused airflow. When the damper and the first partition are moved, part of the airflow entering the vortex duct forms a vortex airflow between the first partition and the damper, thereby changing the air outlet angle of the indoor air conditioning unit. Since the damper is used to open or close the first air outlet and is also reused as the cavity wall of the vortex cavity, the number of components in the indoor air conditioning unit can be reduced, thereby reducing manufacturing processes and the overall size of the indoor air conditioning unit.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and in particular to an indoor air conditioning unit and an air conditioner. Background Technology

[0002] The air delivery method of an air conditioner affects indoor airflow distribution and comfort. Traditional air conditioners primarily control the direction and speed of the airflow. For example, setting the airflow direction horizontally forward creates a gentle, refreshing breeze, while setting it vertically downward creates a carpet-like breeze, thus avoiding direct hot or cold air from the user. This air delivery mode is essentially a straight, unidirectional airflow, which has the following problems: First, the directional, beam-like airflow, due to reflection from the wall, still creates a large temperature difference, easily causing discomfort and potentially leading to air conditioning sickness; second, unidirectional airflow has low mixing efficiency, resulting in increased energy consumption during prolonged operation. Summary of the Invention

[0003] The air conditioning indoor unit and air conditioner provided in this application can achieve diffused airflow and large-angle directional airflow while reducing the overall size of the air conditioning indoor unit, thus achieving efficient and balanced heat exchange and reducing energy consumption.

[0004] The first aspect of this application provides an air handling apparatus, comprising:

[0005] The housing is provided with a first air outlet;

[0006] A duct component is disposed inside the housing, forming a fan duct, and the fan duct has a fan outlet.

[0007] A fan, wherein the fan is installed inside the fan duct;

[0008] The indoor unit of the air conditioner also includes:

[0009] A damper is movably connected to the housing and located on the air outlet side of the fan duct. The damper is used to open or close the first air outlet. The damper is spaced apart from at least a portion of the first sidewall of the housing to form a vortex cavity. The vortex cavity is connected to the fan duct through the fan outlet and is connected to the first air outlet to discharge air to the outside of the housing.

[0010] A first partition is movably disposed within the vortex cavity, dividing the vortex cavity into a vortex air duct and a return air duct, which are used to circulate airflow within the vortex air duct and the return air duct.

[0011] When the damper opens the first air outlet, both the first partition and the damper are configured to move relative to the first sidewall to change the air outlet angle of the vortex duct.

[0012] The indoor air conditioning unit of this application features a movable damper on its casing, used to open or close the first air outlet of the casing. Simultaneously, the damper can be spaced apart from the first sidewall of the casing to form a vortex cavity. A movable first partition is installed within the vortex cavity, dividing it into a vortex duct and a return duct. A portion of the airflow entering the vortex cavity circulates between the vortex duct and the return duct, causing self-excited oscillation of the airflow within the vortex duct, thus achieving diffused airflow. Both the duct and the first partition are movable relative to the first sidewall, causing a portion of the airflow within the vortex duct to form a vortex airflow, thereby allowing the vortex airflow to alter the air outlet angle of the indoor air conditioning unit.

[0013] Since the damper can be used to open or close the first air outlet, and when the damper is open, it can also be reused as part of the vortex cavity, that is, the damper can be formed as part of the cavity wall of the vortex cavity. Thus, while enabling the normal opening and closing of the first air outlet of the air conditioner indoor unit, the structural design of the oscillator of the air conditioner indoor unit is also simplified, which helps to reduce the number of parts and simplify the assembly of parts.

[0014] In addition, a portion of the vortex cavity wall is formed by a damper. When the damper is opened, the vortex cavity is also formed. This makes the vortex cavity resemble a retractable, movable cavity. When the indoor unit is not in use, closing the damper causes the vortex cavity to contract, reducing the overall size of the indoor unit.

[0015] In addition, since part of the damper is located inside the casing when the first air outlet is opened, the casing can be used to accommodate part of the damper, making the vortex cavity an embedded design, which helps to reduce the overall size of the air conditioner indoor unit.

[0016] In one possible implementation, the indoor unit of the air conditioner has a first air supply mode, a second air supply mode, and a third air supply mode;

[0017] In the first air supply mode, the vortex air duct is constructed between the first partition and the damper, and the return air duct is constructed between the first partition and the first sidewall.

[0018] The first partition can be movable relative to the first side wall so that the air outlet end of the first partition is close to the first side wall, so that the indoor unit of the air conditioner switches to the second air supply mode;

[0019] The first partition can move relative to the first side wall so that the windward end of the first partition is close to the first side wall, and the windward end of the damper can move toward the direction close to the first partition so that the indoor unit of the air conditioner switches to the third air supply mode.

[0020] Among them, the first air supply mode, the second air supply mode and the third air supply mode are all different air supply modes, the air outlet end of the first partition is the end close to the first air outlet, the windward end of the first partition is the end close to the air outlet of the fan; the windward end of the damper is the end close to the air outlet of the fan.

[0021] As can be seen, in the first air supply mode, the airflow, under the influence of the vortex duct and return duct at the first partition and damper structure, can generate self-excited oscillation, achieving diffused airflow. Based on this, this application, by moving the first partition, changes the position of the air outlet end of the first partition relative to the first sidewall, thereby generating vortex airflow within the vortex duct. Using this vortex airflow, the air outlet angle of the first sub-air outlet can be changed, thus switching the indoor unit of the air conditioner to the second air supply mode. Furthermore, this application can also, by moving the damper and the first partition, change the position of the windward end of the damper and the first partition relative to the first sidewall, thereby generating vortex airflow within the vortex duct. Using this vortex airflow, the air outlet angle of the first sub-air outlet can be changed, thus switching the indoor unit of the air conditioner to the third air supply mode.

[0022] In one possible implementation, the indoor unit of the air conditioner further includes:

[0023] The second partition is fixed to the damper, and the vortex air duct is formed between the first partition and the second partition;

[0024] The return air duct includes:

[0025] The first return air duct is constructed by spacing between the first partition and the first sidewall;

[0026] The second return air duct is formed between the second partition and the damper.

[0027] By adding a second partition on top of the first partition, the vortex cavity can be divided into two return channels and a vortex duct located between the two return channels. This increases the return flow rate within the vortex cavity, enhances the self-excited oscillation of the airflow, and further optimizes the diffusion effect. Furthermore, since the second partition is fixed to the damper, when the damper moves, the second partition is also moved synchronously, thereby adjusting the airflow direction within the vortex duct. No additional drive mechanism is needed for the second partition, thus reducing the number of components in the indoor unit and simplifying its internal structural design.

[0028] In one possible implementation, the indoor unit of the air conditioner has a first air supply mode; the air duct component includes:

[0029] Snail shell;

[0030] The volute tongue is spaced apart from the volute shell to form the fan duct and the fan outlet. In the first air supply mode, the distance between the position of the volute tongue forming the fan outlet and the windward end of the damper is d7, and the distance between the windward end of the first partition and the windward end of the second partition is d2, where d7 < d2.

[0031] The windward end of the second partition is the end closest to the air outlet of the fan.

[0032] This configuration ensures that the airflow returning from the return duct to the fan outlet is deflected at the fan outlet, resulting in a different flow direction between the returned airflow and the airflow at the fan outlet. This ensures the mixing of airflows with different directions, generating self-excited oscillation. If d7 > d2, when the airflow in the return duct returns to the fan outlet, it may flow in the opposite direction to the airflow at the fan outlet. This would significantly weaken the airflow within the vortex cavity, causing substantial airflow loss and turbulence within the vortex cavity, hindering vortex formation.

[0033] In one possible implementation, the distance d7 between the volute tongue at the location forming the fan outlet and the windward end of the damper also satisfies the following:

[0034] 1.1d7 < d2, and / or, d2 < 2d7.

[0035] When 1.1d7 < d2, it ensures that the fan outlet is smaller than the inlet of the vortex duct formed by the first and second baffles. This avoids situations where the fan outlet is equal to or larger than the vortex duct inlet due to manufacturing tolerances or other reasons. This ensures that the recirculated airflow mixes with the airflow at the fan outlet and prevents the airflow output from the fan outlet from directly entering the recirculation duct at the fan outlet, thus avoiding a collision with the airflow in the recirculation duct. When d2 < 2d7, it prevents the vortex duct inlet from being too large, preventing the airflow from failing to form circulation and vortex airflow between the first and second baffles and exiting directly from the first outlet.

[0036] In one possible implementation, the indoor unit of the air conditioner has a second air supply mode; the housing further includes:

[0037] The second sidewall is disposed opposite to the first sidewall, and the first air outlet is formed between the first sidewall and the second sidewall. The volute is connected to the second sidewall.

[0038] The cross-section of the volute tongue in the direction perpendicular to the length of the indoor unit of the air conditioner includes:

[0039] An arc segment, the arc segment protruding toward the volute;

[0040] A straight segment connects to the arc segment and extends along the direction of the fan outlet toward the first air outlet; in the second air supply mode, the distance between the straight segment and the windward end of the damper on the cross section is d0, and the distance between the straight segment and the extension line of the connection position of the volute and the second sidewall on the cross section is d1, wherein 3d0 > d1.

[0041] With the above settings, when the indoor unit of the air conditioner is in the second air supply mode, the inlet of the vortex air duct still has a sufficiently large size to ensure that enough airflow enters the vortex cavity, thereby ensuring that the indoor unit of the air conditioner has a sufficiently large angle of airflow in the down-flow mode.

[0042] In one possible implementation, the damper includes:

[0043] A door panel, wherein the vortex cavity is formed between the door panel and the first sidewall;

[0044] Two side panels are respectively disposed at two opposite ends of the door panel along the length direction of the door panel. The two ends of the second partition along the length direction of the door panel are respectively fixed to the two side panels. The two side panels enclose the two sides of the second return air duct along the length direction of the door panel.

[0045] By setting a side plate on each of the two opposite sides of the door panel, the two side plates can be used to close the two sides of the second return air duct along the length of the door panel. This can prevent air leakage on both sides of the second return air duct, reduce airflow loss, and facilitate the return of airflow through the second return air duct, as well as the formation of vortexes in the vortex air duct.

[0046] In one possible implementation, the damper is rotatably connected to the housing. When the damper opens the first air outlet, the damper can rotate relative to the first side wall by a preset angle, so that the indoor unit of the air conditioner switches to the third air supply mode; wherein the preset angle is 10° to 30°.

[0047] By limiting the rotation angle of the damper, the inlet of the vortex cavity formed after the damper rotates can be made to a reasonable size, ensuring sufficient airflow within the vortex cavity and thus creating the desired vortex airflow. This vortex airflow can then be used to increase the air outlet angle of the indoor unit of the air conditioner. When the damper rotation angle exceeds 30°, the inlet of the vortex cavity becomes too small, resulting in insufficient airflow into the vortex cavity and insufficient intensity of the vortex airflow formed within the vortex duct.

[0048] In one possible implementation, the damper includes:

[0049] outer shell;

[0050] An inner shell is disposed on the side of the outer shell facing the first partition, and a hollow space is provided between the outer shell and the inner shell to reduce heat transfer between the outer shell and the inner shell.

[0051] By designing the damper as a two-layer structure consisting of an outer shell and an inner shell, with a hollow space between them, heat transfer between the outer and inner shells is reduced. When the indoor unit is in cooling mode, the influence of the inner shell within the vortex cavity on the outer shell is reduced, avoiding excessive temperature differences between the outer shell and the outside air, and preventing condensation on the outer shell.

[0052] In one possible implementation, the damper further includes:

[0053] A heat insulation component is disposed in the hollow space.

[0054] By installing heat insulation components within the hollow space, heat transfer between the outer and inner shells can be further reduced, thereby improving the anti-condensation effect of the outer shell.

[0055] In one possible implementation, the inner shell is stacked on the air outlet end of the outer shell, and the thickness of the inner shell at the air outlet end of the outer shell is reduced in the direction from the air outlet end of the outer shell to the air front end of the outer shell.

[0056] Wherein, the air outlet end of the outer shell is the end near the first air outlet, the windward end of the outer shell is the end near the air outlet of the fan, and the windward end of the inner shell is the end near the air outlet of the fan.

[0057] By incorporating an inner shell at the air outlet of the outer casing, the area and volume of the inner shell can be reduced, saving materials used in manufacturing the damper. Simultaneously, the size of the hollow space can be reduced, further decreasing the materials needed for insulation components and lowering the manufacturing cost of the indoor air conditioning unit. Furthermore, this design reduces the weight of the damper, thereby reducing the driving force required to move it and consequently lowering power consumption.

[0058] In one possible implementation, the inner housing is provided with a diversion section on the side facing the first partition. The diversion section is configured to divert the airflow in the vortex duct when the damper opens the first air outlet, so that part of the airflow in the vortex duct is discharged through the first air outlet, and another part of the airflow is returned to the fan outlet through the return duct.

[0059] By setting up a diversion section, when the airflow in the vortex duct reaches the first air outlet, the diversion section can split the airflow, allowing a portion of the airflow to enter the return duct, thereby enabling part of the airflow in the vortex duct to circulate in the vortex duct and the return duct, so that the airflow can smoothly generate self-excited oscillation.

[0060] In one possible implementation, the housing further includes:

[0061] The second sidewall is disposed opposite to the first sidewall, and the first air outlet is formed between the first sidewall and the second sidewall. The damper is configured to form a guide air duct with at least a portion of the second sidewall when the first air outlet is opened. The guide air duct is connected to the fan air duct through the fan outlet.

[0062] The first air outlet includes:

[0063] The first sub-air outlet is formed between the first sidewall and the air damper, and the vortex air duct is connected to the first sub-air outlet to deliver airflow to the outside of the housing.

[0064] The second sub-air outlet is formed between the second sidewall and the air damper, and the air guide duct is connected to the second sub-air outlet to deliver airflow to the outside of the housing.

[0065] By allowing the damper to form a guide air duct with the second side wall of the casing while the first air outlet is open, a vortex cavity and a guide air duct can be constructed in the space between the first and second side walls of the casing when the damper is open. Thus, when the fan of the indoor unit blows air, part of the airflow enters the vortex cavity, undergoes self-excited oscillation, and is then output as diffused air from the first sub-outlet. The other part of the airflow directly enters the guide air duct, passes through it, and is output from the second sub-outlet, mixing with the diffused air from the first sub-outlet. This reduces the airflow loss caused by the vortex cavity, thereby increasing the air volume of the indoor unit and improving heat exchange efficiency.

[0066] In one possible implementation, the damper includes:

[0067] The first drainage segment has a first end and a second end that are opposite each other;

[0068] The second drainage section has a third end and a fourth end opposite to each other, the third end being connected to the second end;

[0069] When the damper opens the first air outlet, the first guide section is located at the end of the second guide section near the air outlet of the fan. The first guide section is used to guide part of the airflow at the air outlet of the fan into the guide duct; the second guide section is used to guide the airflow to the second sub-air outlet.

[0070] When the damper opens the first air outlet, the first diversion section is located on the side of the second diversion section closer to the fan outlet. This allows for proper diversion of the airflow at the fan outlet, enabling some airflow to enter the guide duct, thus achieving the effect of compensating for the air volume output of the indoor unit of the air conditioner.

[0071] In one possible implementation, both the first drainage segment and the second drainage segment are arc-shaped segments, the curvature at the position where the second end connects to the third end is c1, and the curvature at any position of the second drainage segment is c2, wherein c2≤c1.

[0072] By ensuring that the curvature at any point in the second diversion section is no greater than the curvature at the junction of the first and second diversion sections, the diversion surface of the second diversion section can be made relatively flat, which can reduce wind resistance during the diversion process and thus reduce airflow loss.

[0073] In one possible implementation, the second drainage segment includes:

[0074] The first sub-drainage segment has a fifth end and a sixth end opposite to each other, and the fifth end is connected to the second end;

[0075] The second sub-drainage section has a seventh end and an eighth end, the seventh end being connected to the sixth end, and the eighth end being configured with the first sidewall to form the first sub-air outlet.

[0076] The first sub-guide section is used to guide the airflow to the second sub-guide section. The second sub-guide section is located on the side of the first sub-guide section close to the second sub-outlet. The second sub-guide section is used to guide the airflow in the guide duct to mix with the airflow output by the vortex duct through the second sub-outlet.

[0077] After the airflow is guided from the first sub-flow section to the second sub-flow section, the airflow output from the second sub-air outlet can be guided to mix with the airflow output from the first sub-air outlet, thereby increasing the air volume of the indoor unit of the air conditioner.

[0078] In one possible implementation, both the first sub-drainage segment and the second sub-drainage segment are arc-shaped segments, the curvature of the first sub-drainage segment at any position is c2, and the curvature at the position where the sixth end and the seventh end are connected is c3, wherein c2≤c3.

[0079] By setting the curvature c2 at any position on the first sub-drainage section to be no greater than the curvature c3 at the connection point of the second sub-drainage section, the overall curvature change of the first sub-drainage section is small, and the overall curvature is relatively gentle, which is conducive to generating the wall effect and further effectively guiding the flow direction of the airflow.

[0080] A second aspect of this application provides an indoor air conditioning unit, comprising:

[0081] The housing is provided with a first air outlet;

[0082] A duct component is disposed inside the housing, forming a fan duct, and the fan duct has a fan outlet.

[0083] A fan, wherein the fan is installed inside the fan duct;

[0084] The indoor unit of the air conditioner also includes:

[0085] A damper is movably connected to the housing and located on the air outlet side of the fan duct. The damper is used to open or close the first air outlet. The damper is spaced apart from at least a portion of the first sidewall of the housing to form a vortex cavity. The vortex cavity is connected to the fan duct through the fan outlet and is connected to the first air outlet to discharge air to the outside of the housing.

[0086] A first partition is movably disposed within the vortex cavity, dividing the vortex cavity into a vortex air duct and a return air duct, which are used to circulate airflow within the vortex air duct and the return air duct.

[0087] The air conditioner indoor unit has a first air supply mode, a second air supply mode and a third air supply mode. When the damper opens the first air outlet, both the first partition and the damper are configured to be movable relative to the first side wall so that the air conditioner indoor unit can switch to different air supply modes.

[0088] In the first air supply mode, part of the airflow in the vortex duct circulates between the vortex duct and the return duct, and mixes with the airflow at the fan outlet before being discharged through the first outlet.

[0089] In the second air supply mode, part of the airflow in the vortex duct forms a vortex airflow in the vortex duct, and another part of the airflow is directed towards the first sidewall and discharged through the first air outlet.

[0090] In the third air supply mode, part of the airflow in the vortex duct forms a vortex airflow in the vortex duct, and another part of the airflow is directed towards the damper and discharged through the first air outlet.

[0091] Because the damper can be used to open or close the first air outlet, and when open, it can also be reused as part of the vortex cavity, meaning the damper can form part of the cavity wall, this simplifies the structural design of the air conditioner's oscillator while ensuring the normal opening and closing of the first air outlet. This reduces the number of components and simplifies assembly. Furthermore, by using the damper to form part of the vortex cavity wall, the vortex cavity is formed when the damper is opened. Also, since part of the damper is located inside the casing when the first air outlet is open, the casing can accommodate part of the damper, creating an embedded vortex cavity design that reduces the overall size of the air conditioner's indoor unit. Additionally, moving the first partition within the vortex cavity switches the indoor unit to a second air supply mode, and moving the damper and the first partition within the vortex cavity switches it to a third air supply mode, maintaining a consistent appearance for the indoor unit.

[0092] Compared with the prior art, the beneficial effects of this application are as follows:

[0093] The air conditioner indoor unit of this application features a movable damper on its casing, used to open or close the first air outlet of the casing. When the damper is open relative to the first air outlet, the damper and the first side wall of the casing are spaced apart to form a vortex cavity. A movable first partition is installed within the vortex cavity, dividing it into a vortex duct and a return duct. Part of the airflow entering the vortex cavity circulates between the vortex duct and the return duct, mixing with the airflow exiting the fan outlet to generate self-excited oscillation and achieve diffused airflow. Moving the first partition, or moving the damper and the first partition, allows part of the airflow entering the vortex duct to form a vortex airflow between the first partition and the damper, changing the air outlet angle of the air conditioner indoor unit. Since the damper serves both to open or close the first air outlet and as a cavity wall for the vortex cavity, the number of components in the air conditioner indoor unit can be reduced, thereby reducing manufacturing processes and the overall size of the air conditioner indoor unit. Attached Figure Description

[0094] Figure 1 This is a three-dimensional structural diagram of the air damper of the indoor unit of the air conditioner in the open state according to an embodiment of this application;

[0095] Figure 2 This is a front view of the indoor unit of the air conditioner according to this application;

[0096] Figure 3 yes Figure 2 The diagram shows a cross-sectional view of the indoor unit of the air conditioner along line A-A'.

[0097] Figure 4 yes Figure 3 Enlarged view of region A in the middle;

[0098] Figure 5 This is a three-dimensional structural diagram of the air damper of the indoor unit of the air conditioner in the closed state according to an embodiment of this application;

[0099] Figure 6 yes Figure 5 A front view of the indoor unit of the air conditioner shown;

[0100] Figure 7 yes Figure 6 The diagram shows a cross-sectional view of the indoor unit of the air conditioner along line B-B'.

[0101] Figure 8 yes Figure 7 Enlarged view of region B in the middle;

[0102] Figure 9 This is a schematic diagram of the air damper of the indoor unit of the air conditioner in this application from the state of opening to closing;

[0103] Figure 10This is a schematic diagram of airflow in the first air supply mode of the embodiments of this application;

[0104] Figure 11 This is a schematic diagram of airflow in the second air supply mode in the embodiments of this application;

[0105] Figure 12 This is a schematic diagram of airflow in the third air supply mode in the embodiments of this application;

[0106] Figure 13 This is a three-dimensional structural diagram of the air damper of the indoor unit of the air conditioner according to an embodiment of this application;

[0107] Figure 14 yes Figure 13 A front view of the damper shown;

[0108] Figure 15 yes Figure 14 The diagram shows a cross-sectional view of the damper along line C-C'.

[0109] Figure 16 This is a cross-sectional schematic diagram of an air conditioner indoor unit with two partitions according to an embodiment of this application;

[0110] Figure 17 yes Figure 16 Enlarged view of region C in the middle;

[0111] Figure 18 This is a schematic diagram of the gas flow in the first air supply mode of an indoor air conditioning unit with two partitions according to an embodiment of this application;

[0112] Figure 19 This is a schematic diagram of the gas flow in the second air supply mode of an indoor air conditioning unit with two partitions according to an embodiment of this application;

[0113] Figure 20 This is a schematic diagram of the gas flow in the third air supply mode of an indoor air conditioning unit with two partitions according to an embodiment of this application;

[0114] Figure 21 This is a three-dimensional structural diagram of an air conditioner according to an embodiment of this application. Detailed Implementation

[0115] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0116] In this application, the terms "upper," "lower," "front," "rear," "bottom," "inner," "outer," and "middle," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0117] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0118] Furthermore, the terms "installation," "setup," "equipped with," "opening," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable link, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0119] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0120] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0121] The air delivery method of an air conditioner directly affects the distribution of indoor airflow and user comfort. Current air conditioners use a unidirectional, beam-like airflow method, which is essentially a mechanical, harsh breeze and can easily cause discomfort and lead to "air conditioning sickness." Therefore, related technologies control the airflow direction to avoid direct airflow onto the body. For example, setting the air conditioner's outlet direction to horizontal allows the airflow to naturally descend and create a gentle, refreshing breeze, or setting the outlet direction vertically downwards allows the airflow to flow over the floor, creating a carpet-like breeze. Furthermore, the airflow speed is controlled to reduce the feeling of a draft. For example, using perforated plates to apply air resistance reduces the airflow speed. However, these control methods still have problems: First, the beam-like airflow still generates a significant temperature difference after being reflected off the wall, affecting user comfort. Second, unidirectional airflow has low mixing efficiency, reducing heat exchange and increasing energy consumption during prolonged operation.

[0122] To address the aforementioned technical problems, the inventors attempted to incorporate a fluid oscillator connected to a fan into the air conditioner. When the airflow output from the fan enters the fluid oscillator, it undergoes self-excited oscillation under the influence of the oscillator, resulting in a multi-directional diffused airflow from the air conditioner, thus producing a gentler breeze. Furthermore, because the airflow is diffused, the local mixing efficiency is higher, improving the heat exchange effect in the local space, reducing the air conditioner's operating time, and thereby saving power consumption.

[0123] However, the inventors discovered through research that because the fluid oscillator is directly connected to the fan, it has significant wind resistance, resulting in a smaller designed airflow volume. This reduces the amount of air supplied by the air conditioner, affecting the cooling effect. Furthermore, the fluid oscillator requires additional space, increasing the overall size of the indoor unit and hindering its miniaturization design.

[0124] Based on this, the inventors further attempted to reduce the overall size of the air conditioner indoor unit by reducing the volume of the fluid oscillator or by using a combination of multiple small fluid oscillators. However, while miniaturization was achieved, reducing the fluid oscillator size further reduced the airflow output, significantly impacting the airflow performance. Furthermore, using a combination of multiple small fluid oscillators not only increased the complexity of the internal structure and the number of components in the air conditioner indoor unit but also wasted the unit's limited internal space.

[0125] Therefore, it is clear that none of the above methods can achieve the design requirements of minimizing structural improvements to reduce modification costs and achieving air conditioner miniaturization while taking into account the air volume and heat dissipation efficiency of the air conditioner.

[0126] In view of this, this application provides an indoor air conditioning unit and an air conditioner. The indoor air conditioning unit has a movable damper on its casing, which is used to open or close a first air outlet of the casing. When the damper is open relative to the first air outlet, the damper and the first side wall of the casing are spaced apart to form a vortex cavity. A movable first partition is provided inside the vortex cavity, which divides the vortex cavity into a vortex duct and a return duct. Part of the airflow entering the vortex cavity circulates between the vortex duct and the return duct, mixing with the airflow from the fan outlet to generate self-excited oscillation and achieve diffused airflow. When the first partition is moved, or when the damper and the first partition are moved, part of the airflow entering the vortex duct can form a vortex airflow between the first partition and the damper, using the vortex airflow to change the air outlet angle of the indoor air conditioning unit. Since the damper is used both to open or close the first air outlet and as the cavity wall of the vortex cavity, the number of components in the indoor air conditioning unit can be reduced, thereby reducing manufacturing processes and the overall size of the indoor air conditioning unit.

[0127] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0128] Please see Figures 1 to 6 , Figure 1 This is a three-dimensional structural diagram of the air damper of the indoor unit of the air conditioner in the open state according to an embodiment of this application. Figure 2 This is a front view of the indoor unit of the air conditioner according to this application. Figure 3 for Figure 2 The diagram shows a cross-sectional view of the indoor unit of an air conditioner along line A-A'. Figure 4 for Figure 3 An enlarged schematic diagram of region A in the middle.

[0129] In some embodiments, the indoor unit of the air conditioner may be, for example, a wall-mounted indoor unit, that is, the indoor unit can be mounted on a wall. Alternatively, the indoor unit may be, for example, a floor-standing indoor unit, that is, the indoor unit can be placed on the ground, a table, or the like.

[0130] This application takes the indoor unit of the air conditioner as an example, which is a wall-mounted indoor unit.

[0131] In some embodiments, the indoor unit 100 of the air conditioner includes a housing 110, an air duct component 120, and a fan 130. The housing 110 includes an outer shell and a bottom shell, which together form an internal space for installing the air duct component 120, a heat exchanger, and other devices.

[0132] In some embodiments, the housing 110 is provided with a first air outlet 111, which can connect the internal space of the housing 110 with the outside, so as to output the heat exchange airflow generated inside the air conditioner indoor unit 100 to the outside through the first air outlet 111.

[0133] In some embodiments, the air duct component 120 is disposed in the internal space of the housing 110, and the air duct component 120 forms a fan air duct 121. The fan air duct 121 has a fan outlet 121a, and the fan air duct 121 is connected to a first air outlet 111 through the fan outlet 121a, so as to blow the air from the internal space of the housing 110 out through the first air outlet.

[0134] In some embodiments, the duct component 120 includes a volute 122 and a volute tongue 123, which are arranged opposite to each other to form a fan duct 121 and a fan outlet 121a.

[0135] In some embodiments, the fan 130 is disposed in the fan duct 121, and the fan 130 is configured to blow the air after heat exchange by the heat exchanger out through the fan outlet 121a to the first outlet 111.

[0136] Please see also Figures 5 to 8 , Figure 5This is a three-dimensional structural diagram of the air damper of the indoor unit of the air conditioner in the closed state according to an embodiment of this application. Figure 6 for Figure 5 The diagram shown is a front view of the indoor unit of the air conditioner. Figure 7 for Figure 6 The diagram shows a cross-sectional view of the indoor unit of an air conditioner along line B-B'. Figure 8 for Figure 7 Enlarged schematic diagram of region B in the middle.

[0137] In some embodiments, the housing includes a first sidewall 112 and a second sidewall 113 along its width direction W, with a first air outlet 111 defined between the first sidewall 112 and the second sidewall 113.

[0138] In some embodiments, the indoor unit 100 of the air conditioner further includes a damper 140, which is movably connected to the housing 110 and located on the air outlet side of the fan duct 121. When the damper 140 moves relative to the housing 110, it can open or close the first air outlet 111. For example, when the indoor unit 100 of the air conditioner is in a sleep state or a shutdown state, the damper 140 can move relative to the housing to cover the first air outlet 111, that is, the damper 140 closes the first air outlet 111. When the user starts the indoor unit 100 of the air conditioner, putting it into operation, the damper 140 can move relative to the housing 110 to expose the first air outlet 111, that is, the damper 140 opens the first air outlet 111. Therefore, the movable setting of the damper 140 enables the opening and closing of the first air outlet 111. When the indoor unit 100 of the air conditioner is not in use, the setting of the damper 140 can also prevent dust, debris, water vapor and other contaminants from entering the first air outlet 111, effectively achieving the waterproof and dustproof effect of the indoor unit 100 of the air conditioner.

[0139] In some embodiments, the damper 140 may be movably connected to the housing 110, or the damper 140 may be slidably connected to the housing 110. For example, if the damper 140 is rotatably connected to the housing 110, the opening or closing of the first air outlet 111 can be achieved by rotating the damper 140. For example, a motor can be used to directly drive the damper 140 to rotate, or a motor can be used in conjunction with a gear transmission mechanism to drive the damper 140 to rotate. If the damper 140 is slidably connected to the housing 110, the opening or closing of the first air outlet 111 can be achieved by sliding the damper 140. For example, the damper 140 can be slidably mounted on an arc-shaped track, driving the damper 140 to move along the track, or an arc-shaped rack can be provided on the damper 140, and the rack can be driven to move by gears, thereby moving the damper 140.

[0140] It is evident that, regardless of the method described above, as long as the damper 140 can open or close the first air outlet 111, this embodiment does not impose any specific limitations on it.

[0141] It is understandable that, since the damper 140 can be partially located in the internal space of the housing 110 when the first air outlet 111 is opened or closed, at least part of the damper 140 can be accommodated in the internal space of the air conditioner indoor unit 100, making the internal structure of the air conditioner indoor unit 100 more compact and facilitating the miniaturization design of the air conditioner indoor unit 100.

[0142] See also Figure 9 , Figure 9 This is a schematic diagram of the air damper of the indoor unit of the air conditioner in an embodiment of this application, showing its movement from opening to closing.

[0143] In some embodiments, when the damper 140 is open at the first air outlet, the damper 140 is spaced apart from a portion of the first sidewall 112, thereby forming a vortex cavity 150 between the damper 140 and the first sidewall 112. The vortex cavity 150 is connected to the fan duct 121 via the fan outlet 121a, so that the fan 130 can input airflow into the vortex cavity 150 through the fan duct 121 and the fan outlet 121a. The vortex cavity 150 is also connected to the first air outlet 111, so that the airflow in the vortex cavity 150 can flow to the outside of the housing 110 through the first air outlet 111.

[0144] As can be seen, the damper 140 can not only open or close the first air outlet 111, but also can be reused as a component to form the vortex cavity 150. Therefore, there is no need to set up an independent dust door and fluid oscillator for the air conditioner indoor unit 100, which can reduce the number of components of the air conditioner indoor unit 100, reduce the manufacturing cost of the air conditioner indoor unit 100, save the internal space of the casing 110, and reduce the overall volume of the air conditioner indoor unit 100.

[0145] In some embodiments, the profile of the vortex cavity 150 can be constructed as a relatively regular shape in a cross section perpendicular to the length direction L of the indoor unit 100. For example, it can be an axisymmetric shape with an axis of symmetry LA. This configuration makes the housing 110 and damper 140 used to construct the vortex cavity 150 easier to manufacture.

[0146] In some embodiments, the indoor unit 100 of the air conditioner further includes a first partition 161, which is movably disposed inside the vortex cavity 150. The first partition 161 divides the vortex cavity 150 into a vortex air duct 151 and a return air duct 152. The arrangement of the vortex air duct 151 and the return air duct 152 allows a portion of the airflow entering the vortex cavity 150 to circulate between the vortex air duct 151 and the return air duct 152.

[0147] In some embodiments, when the damper 140 opens the first air outlet 111, the direction of airflow in the vortex duct 151 can be changed by moving the first partition 161 relative to the first side wall 112 of the housing 110, thereby changing the air outlet angle of the vortex duct 151 at the first air outlet 111.

[0148] In some embodiments, when the damper 140 opens the first air outlet 111, by moving the damper 140 and the first partition 161 relative to the first side wall 112 of the housing 110, the direction of airflow in the vortex duct 151 can be changed, thereby changing the air outlet angle of the vortex duct 151 at the first air outlet 111.

[0149] This application incorporates a movable damper 140 on the housing 110, which opens or closes the first air outlet 111 of the housing 110. When the damper 140 is open relative to the first air outlet 111, the damper 140 and the first sidewall 112 of the housing 110 are spaced apart to form a vortex cavity 150. A movable first partition 161 is disposed within the vortex cavity 150, dividing it into a vortex duct 151 and a return duct 152. Part of the airflow entering the vortex cavity 150 circulates between the vortex duct 151 and the return duct 152, mixing with the airflow at the fan outlet 121a to generate self-excited oscillation, thus achieving diffused airflow. When the first partition 161 is moved, or when the damper 140 and the first partition 161 are moved, some of the airflow entering the vortex duct 151 can form a vortex airflow between the first partition 161 and the damper 140, thereby changing the air outlet angle of the air conditioner indoor unit 100. Since the damper 140 is used both to open or close the first air outlet 111 and as the cavity wall of the vortex cavity 150, the number of components in the air conditioner indoor unit 100 can be reduced, thereby reducing manufacturing processes and the overall size of the air conditioner indoor unit 100.

[0150] In some embodiments, the indoor unit 100 of the air conditioner may include a first air supply mode, which may be a diffused air supply mode, which can reduce the feeling of airflow blowing directly on the human body when the indoor unit 100 supplies air. In the first air supply mode, part of the airflow entering the vortex cavity 150 from the fan outlet 121a circulates in the vortex duct 151 and the return duct 152, and mixes with the airflow at the fan outlet 121a to generate self-excited oscillation, and then flows from the first outlet 111 to the outside of the casing 110 to form a diffused airflow.

[0151] See also Figure 10 , Figure 10 This is a schematic diagram of airflow in the first air supply mode according to an embodiment of this application. In some embodiments, the indoor unit 100 of the air conditioner further includes a second air supply mode, which can be an upward air supply mode. The upward air supply mode means that when the indoor unit 100 supplies air, the airflow is directed towards the first side wall 112, that is, the indoor unit 100 supplies air upward along the height direction. When the damper 140 opens the first air outlet 111, the indoor unit 100 can switch to the second air supply mode by moving the first partition 161 relative to the first side wall 112, so that the air outlet end 161d of the first partition 161 is close to the first side wall 112.

[0152] In the second air supply mode, the first partition 161 moves relative to the first side wall 112, causing the airflow entering the vortex cavity 150 to form a vortex airflow in the vortex air duct 151. The vortex airflow can change the air outlet angle of another part of the airflow at the first air outlet 111, so that it outputs the airflow with the changed air outlet angle through the first air outlet 111 in a direction biased towards the first side wall 112.

[0153] In some embodiments, the indoor unit 100 of the air conditioner further includes a third air supply mode, which can be a downward air supply mode. The downward air supply mode means that when the indoor unit 100 supplies air, the airflow is directed towards the second side wall 113, that is, the indoor unit 100 supplies air downwards along the height direction. When the damper 140 opens the first air outlet 111, the indoor unit 100 can switch to the third air supply mode by moving the windward end 161e of the first partition 161 closer to the first side wall 112 and moving the windward end 140f of the damper 140 towards the first partition 161.

[0154] In the third air supply mode, the damper 140 and the first partition 161 move relative to the first side wall 112, causing the airflow entering the vortex cavity 150 to form a vortex airflow in the vortex air duct 151. The vortex airflow can change the air outlet angle of another part of the airflow at the first air outlet 111, so that it outputs the airflow with the changed air outlet angle through the first air outlet 111 in a direction biased towards the damper 140.

[0155] It should be noted that the windward end of the damper 140 is the end closest to the fan outlet 121a, and the air outlet end 140e of the damper 140 is the end closest to the first air outlet 111. The windward end of the first partition 161 is the end closest to the fan outlet 121a, and the air outlet end 161d of the first partition 161 is the end closest to the first air outlet 111.

[0156] As can be seen, the first air supply mode mentioned above refers to the following: when the damper 140 opens the first air outlet, the first partition 161 is spaced apart from the first side wall 112 and the damper 140, so that the vortex cavity 150 is divided into a vortex air duct 151 and a return air duct 152. As a result, the airflow can circulate between the vortex air duct 151 and the return air duct 152, and can mix with the airflow at the fan outlet 121a to generate self-excited oscillation, and then be discharged through the first air outlet 111 to form a diffused airflow mode.

[0157] Accordingly, the second air supply mode mentioned above refers to the following: when the damper 140 opens the first air outlet 111, the first partition 161 moves relative to the first side wall 112, so that the air outlet end 161d of the first partition 161 approaches the first side wall 112, so that the airflow entering the vortex cavity 150 forms a vortex airflow in the vortex air duct 151, thereby increasing the airflow angle at the first air outlet 111 towards the first side wall 112, and outputting the airflow with the changed airflow angle through the first air outlet 111.

[0158] In addition, the aforementioned third air supply mode refers to the following: when the damper 140 opens the first air outlet 111, the damper 140 and the first partition 161 move relative to the first side wall 112, causing the windward end of the damper 140 to move towards the direction close to the first partition 161, and causing the windward end of the first partition 161 to approach the first side wall 112, thereby causing the airflow entering the vortex cavity 150 to form a vortex airflow in the vortex air duct 151, so as to change the airflow angle deflected towards the damper 140 at the first air outlet 111, and output the airflow with the changed airflow angle through the first air outlet 111.

[0159] It is understood that the switching between the first, second, and third air supply modes can be performed independently. When the damper 140 is open, the indoor unit 100 can initially be in the first air supply mode. The indoor unit 100 can switch from the first air supply mode to the second air supply mode by adjusting the position of the first partition 161 relative to the first side wall 112, so that the air outlet 161d of the first partition 161 is closer to the first side wall 112. Alternatively, the indoor unit 100 can switch from the first air supply mode to the third air supply mode by adjusting the positions of the damper 140 and the first partition 161 relative to the first side wall 112. Alternatively, the indoor unit 100 can switch from the second air supply mode to the third air supply mode by adjusting the positions of the damper 140 and the first partition 161 relative to the first side wall 112. Alternatively, the indoor unit 100 can switch from the third air supply mode to the second air supply mode by adjusting the positions of the damper 140 and the first partition 161 relative to the first side wall 112.

[0160] As can be seen, this application, through the independently set first partition and air damper, enables the indoor unit of the air conditioner to switch independently between multiple air supply modes, thereby adjusting different air supply modes according to the different air blowing needs of users, resulting in a better user experience.

[0161] See also Figure 10 and Figure 12 , Figure 11 This is a schematic diagram of airflow in the second air supply mode in the embodiments of this application. Figure 12 This is a schematic diagram of airflow in the third air supply mode in the embodiments of this application.

[0162] In the first air supply mode, such as Figure 10 As shown, the airflow entering the vortex duct 151 is divided into two parts. One part flows from the first air outlet 111 to the outside of the casing 110, and the other part enters the return duct 152 at the first air outlet 111. It circulates in the vortex duct 151 and the return duct 152, and mixes with the airflow at the fan outlet 121a to generate self-excited oscillation. After forming a diffused airflow, it is output from the first air outlet 111.

[0163] In the second air supply mode, such as Figure 11As shown. The first partition 161 moves relative to the first sidewall 112 until the air outlet 161d is close to the first sidewall 112, thereby reducing the flow rate of the return air duct 152. At this time, part of the airflow entering the vortex cavity 150 through the fan outlet 121a enters the return air duct 152 from the fan outlet 121a. Since the airflow in the return air duct 152 is small, it has little impact on the airflow direction in the vortex air duct 151. The other part of the airflow entering the vortex cavity 150 through the fan outlet 121a flows along the side of the damper 140 facing the first partition 161 to the first air outlet 111. This part of the airflow is divided into two parts again at the first sidewall 112. One part flows from the first air outlet 111 in a direction biased towards the first sidewall 112 to the outside of the casing 110. Another portion flows along the side of the first sidewall 112 facing the damper 140 to the outlet 161d of the first partition 161, and then along the side of the first partition 161 facing the damper 140 to the fan outlet 121a, where it mixes with the airflow at the fan outlet 121a to form a vortex airflow. The vortex airflow can further drive the airflow towards the first sidewall 112 at the first outlet 111, further increasing the airflow outlet angle, thereby achieving a large-angle airflow.

[0164] Understandably, in the second air supply mode, the first baffle 161 can rotate relative to the first sidewall 112, causing the air outlet 161d of the first baffle 161 to abut against the first sidewall 112. At this time, the return air duct 152 is blocked, and the airflow entering the return air duct 152 at the fan outlet 121a cannot circulate, causing static pressure to be generated in the area between the first sidewall 112 and the first baffle 161, which can increase the gas velocity at the outlet to a certain extent, thereby increasing the deflection angle.

[0165] In the third air supply mode, such as Figure 12 As shown. The windward end of the damper 140 moves towards the direction close to the first partition 161, and the windward end of the first partition 161 moves towards the first sidewall 112, or even directly abuts against the first sidewall 112. At this time, the airflow in the return air duct 152 is reduced, and the influence of the airflow in the return air duct 152 can be ignored. The airflow at the fan outlet 121a flows along the side of the first partition 161 facing the damper to the first outlet. Here, part of the airflow is discharged from the first outlet 111 in a direction deflected towards the damper 140, and another part of the airflow is affected by the damper 140 and flows along the surface of the damper 140 facing the first partition 161 to the fan outlet 121a, where it mixes with the airflow from the fan outlet 121a and forms a vortex airflow. The vortex airflow can drive the airflow at the first outlet 111 to continue to deflect in a direction deflected towards the damper 140, so as to increase the airflow outlet angle in the third air supply mode and achieve a large-angle airflow.

[0166] Optionally, the first partition 161 can rotate relative to the first sidewall 112, so that the windward end of the first partition 161 abuts against the first sidewall 112. At this time, the return air duct 152 is blocked, and the airflow entering the return air duct 152 at the fan outlet 121a cannot circulate, causing static pressure to be generated in the area between the first sidewall 112 and the first partition 161, which can increase the gas velocity at the outlet to a certain extent, thereby increasing the deflection angle.

[0167] See you again Figures 10 to 12 In some embodiments, the housing 110 further includes a second sidewall 113, which is disposed opposite to the first sidewall 112, and the first sidewall 112 and the second sidewall 113 together form the first air outlet 111. When the damper 140 opens the first air outlet 111, the damper 140 can be located between the first sidewall 112 and the second sidewall 113, so that the damper 140 is spaced apart from both the first sidewall 112 and the second sidewall 113. Furthermore, the vortex cavity 150 is formed between the damper 140 and the first sidewall 112, and the air guide duct 153 is formed between the damper 140 and the second sidewall 113. The air guide duct 153 is connected to the fan duct 121 through the fan outlet 121a. In other words, when the damper 140 is in the state of opening the first air outlet 111, the damper 140 can divide the internal space enclosed between the first side wall 112 and the second side wall 113 into a vortex cavity 150 and a flow channel 153.

[0168] Because some airflow circulates within the vortex cavity 150 in the vortex duct 151 and the return channel 152, meaning that not all airflow entering the vortex duct 151 is delivered to the outside of the casing 110, there is a certain degree of air loss before the airflow is output, resulting in a reduction in the air volume. Furthermore, since the airflow output after passing through the vortex cavity 150 is diffused airflow, its velocity is significantly lower than the airflow velocity at the fan outlet 121a, affecting the overall air volume.

[0169] Based on this, this application utilizes the guide channel 153 formed between the damper 140 and the second sidewall 113, connecting the guide channel 153 to the fan outlet 121a. Simultaneously, the guide channel 153 can also connect to the first outlet 111a. Thus, the airflow output from the fan outlet 121a can not only enter the vortex cavity 150 but also the guide channel 153. Specifically, part of the airflow from the fan outlet 121a enters the vortex cavity 150, while another part enters the guide channel 153 and is directly output to the first outlet 111a. This output airflow mixes with the diffused airflow output from the vortex cavity 150, thereby compensating for the air volume and increasing the airflow velocity, effectively improving the heat exchange efficiency of the indoor unit 100.

[0170] See you again Figure 12 In some embodiments, the volute 122 is connected to the second sidewall 113. The volute tongue 123, in a cross-section perpendicular to the length L of the indoor unit 100, includes an arc segment 123a and a straight segment 123b. In this cross-section, the arc segment 123a protrudes towards the volute 122, and the straight segment 123b connects to one end of the arc segment 123a facing the first air outlet 111 and extends along the direction of the fan outlet 121a towards the first air outlet 111. The first straight segment 123b coincides with the tangent of the arc segment 123a at the connection point in this cross-section. In the second air supply mode, the distance between the straight segment 123b and the windward end of the damper 140 in this cross-section is d0, and the distance between the extension line LB of the connection point of the volute 122 and the second sidewall 113 in this cross-section and the straight segment 123b is d1, where 3d0 > d1, i.e., d0 > d1 / 3. This configuration ensures that when the indoor unit 100 is in the second air supply mode, the inlet of the vortex duct 151 still has a sufficiently large size to ensure that enough airflow enters the vortex cavity 150, thereby ensuring that the indoor unit 100 has a sufficiently large angle airflow in the down-flow mode.

[0171] In some embodiments, when the damper 140 opens the first air outlet 111, the first air outlet 111 may include a first sub-air outlet 111a and a second sub-air outlet 111b. The first sub-air outlet 111a can be constructed between the first sidewall 112 and the damper 140, and the vortex duct 151 communicates with the first sub-air outlet 111a, through which airflow in the vortex duct 151 is delivered to the outside of the housing 110. The second sub-air outlet 111b can be constructed between the second sidewall 113 and the damper 140, and the guide duct 153 communicates with the second sub-air outlet 111b.

[0172] By setting the first sub-air outlet 111a and the second sub-air outlet 111b, the airflow through the vortex cavity 150 and the guide air duct 153 can be discharged separately, avoiding the loss of airflow caused by the airflow in the guide air duct 153 entering the vortex cavity 150, and at the same time avoiding the airflow in the guide air duct 153 from disturbing the airflow inside the vortex cavity 150.

[0173] See you again Figures 10 to 12In some embodiments, the edge portion of the first sidewall 112 forming the first sub-outlet 111a is provided with a first guide portion 112a, which is used to guide the airflow deflection at the first sub-outlet 111a. For example, when airflow is delivered from the first sub-outlet 111a to the outside of the housing 110, the first guide portion 112a can deflect the airflow toward the damper 140. In this way, by using the first guide portion 112a, the airflow exiting through the first sub-outlet 111a can be deflected to achieve large-angle air delivery.

[0174] In some embodiments, the first guide portion 112a may be a protrusion protruding from the first sidewall, and the side of the first guide portion facing the fan outlet 121a is an arc-shaped concave surface, which is recessed toward the side away from the fan outlet 121a.

[0175] See you again Figures 10 to 12 In some embodiments, the edge portion of the damper 140 forming the first sub-outlet 111a is provided with a second guide portion 140a. The second guide portion 140a is used to guide the airflow deflection at the first sub-outlet 111a. For example, when the airflow is delivered from the first sub-outlet 111a to the outside of the housing 110, the second guide portion 140a can deflect the airflow toward the first sidewall 112. By using the second guide portion 140a, the airflow exiting through the first sub-outlet 111a can be deflected to achieve large-angle air delivery.

[0176] In some embodiments, the second guide portion 140a is an arc-shaped concave surface disposed on the side of the damper 140 facing the fan outlet 121a, and the arc-shaped concave surface is recessed towards the side away from the fan outlet 121a.

[0177] See also Figures 13 to 15 , Figure 13 This is a three-dimensional structural diagram of the air damper of the indoor unit of the air conditioner according to an embodiment of this application. Figure 14 for Figure 13 The diagram shown is a front view of the damper. Figure 15 for Figure 14 The diagram shows a cross-sectional view of the damper along line CC'.

[0178] In some embodiments, the damper 140 may include a first guide section 141. When the damper 140 opens the first air outlet 111, the first guide section 141 faces the fan outlet 121a and is inclined relative to the fan outlet 121a. For example, the first guide section 141 has a first end and a second end, the first end being close to the first sidewall 112 and the second end being close to the second sidewall 113. Along the direction of gas flow at the fan outlet 121a, the distance between the first end and the fan outlet 121a is less than the distance between the second end and the fan outlet 121a. Thus, the first guide section 141 can guide part of the airflow into the guide duct 153, so that the guide duct 153 has a certain air volume, ensuring that the guide duct 153 can compensate for the air volume of the indoor unit 100 of the air conditioner.

[0179] In some embodiments, the damper 140 further includes a second guide section, which is located on the side of the first guide section 141 near the first sub-outlet 111a when the damper 140 opens the first outlet 111. The second guide section has a third end and a fourth end, the third end of which connects to the second end of the first guide section 141, and the fourth end is used to form the first sub-outlet 111a. After the first guide section 141 guides part of the airflow into the guide duct 153, the second guide section can guide the airflow to the second sub-outlet 111b, through which the air is discharged.

[0180] In some embodiments, the first drainage segment 141 has a first drainage surface, and the second drainage segment has a second drainage surface. Both the first and second drainage surfaces are curved surfaces. The curvature of the first drainage surface at the junction of the second and third ends is c2. The curvature of any point on the second drainage surface is c2. Then, c1 and c2 satisfy the relationship: c2 ≤ c1. By ensuring that the curvature c2 at any position of the second drainage segment is not greater than the curvature c1 at the junction of the first and second drainage segments, the drainage surface of the second drainage segment can be made relatively gentle, which can reduce wind resistance during the drainage process and thus reduce airflow loss.

[0181] In some embodiments, the second drainage section includes a first sub-drainage section 142 and a second sub-drainage section 143. Specifically, the first sub-drainage section 142 has opposing fifth and sixth ends, and the second sub-drainage section 143 has opposing seventh and eighth ends, wherein the fifth and third ends are connected, the sixth and seventh ends are connected, and the eighth end, together with the first sidewall 112, forms a first sub-outlet 111a. It can be seen that the fifth end of the first sub-drainage section 142 can be considered as the third end of the second drainage section, and the eighth end of the second sub-drainage section 143 can be considered as the fourth end of the second drainage section.

[0182] The first sub-guide section 142 guides airflow to the second sub-guide section 143, which is located on the side of the first sub-guide section 142 near the second sub-outlet 111b. The second sub-guide section 143 guides the airflow within the guide duct 153 to mix with the airflow output from the vortex duct 151 through the second sub-outlet 111b. After the first sub-guide section 142 guides the airflow to the second sub-guide section 143, the second sub-guide section 143 can guide the airflow output from the second sub-outlet 111b to mix with the airflow output from the first sub-outlet 111a, thereby increasing the airflow volume of the indoor unit 100.

[0183] For example, the cross-sectional shape of the damper 140 perpendicular to the length direction L of the indoor unit 100 is approximately U-shaped. The first guide section 141 and the second sub-guide section 143 are the two arms of the U-shaped structure, and the first sub-guide section 142 is the bottom connecting the first guide section 141 and the second sub-guide section 143. When the damper 140 opens the first air outlet 111, the first guide section 141 and the second sub-guide section 143 extend toward the first sidewall 112, and the first end of the first guide section 141 can serve as a diversion point to divert the airflow at the fan outlet 121a. Thus, when the airflow output by the fan is delivered to the fan outlet 121a, the first end of the first guide section 141 allows part of the airflow to flow along the surface of the first guide section 141 and enter the guide duct 153.

[0184] In some embodiments, the first sub-drainage segment 142 has a first sub-drainage surface, and the second sub-drainage segment 143 has a second sub-drainage surface. Both the first and second sub-drainage surfaces are arc surfaces. The curvature of the third drainage surface at the junction of the sixth and seventh ends is c3, where c2 ≤ c3. By setting the curvature c2 at any position on the first sub-drainage segment 142 to be no greater than the curvature c3 at the junction of the second sub-drainage segment 143, the overall curvature change of the first sub-drainage segment 142 is small, and the overall surface is relatively smooth, which is conducive to generating a wall attachment effect and further effectively guiding the flow direction of the airflow.

[0185] See you again Figure 15In some embodiments, the outer wall surface of the damper 140 may be provided with a clearance notch 144, thereby forming a mating step 145 on the outer wall surface of the damper 140. When the damper 140 closes the first air outlet 111, the mating step 145 can abut against the edge portion of the first side wall 112 forming the first sub-air outlet 111a. Since the edge portion of the damper 140 forming the first sub-air outlet 111a is recessed due to the clearance notch 144, the mating step 145 can extend into the inner side of the edge portion of the first side wall 112 forming the first sub-air outlet 111a, thus forming a zero-gap or near-zero-gap contact. This achieves good dustproof and waterproof effects and improves the uniformity of the appearance of the indoor air conditioning unit 100 after the damper 140 is closed.

[0186] See you again Figure 15 In some embodiments, the outer edge of the edge portion of the damper 140 constituting the first sub-air outlet 111a can be set as an arc edge 140b. When the damper 140 closes the first air outlet 111, the arc edge 140b can maintain a fixed distance from the endpoint of the edge portion of the first sidewall 112 constituting the first sub-air outlet 111a, so as to prevent interference and collision during the closing process of the damper 140.

[0187] See you again Figure 15 In some embodiments, when a return air duct 152 is formed between the damper 140 and the first partition 161, a diversion section 146 can be provided on the side of the damper 140 facing the first partition 161. When the airflow in the vortex air duct 151 flows to the first sub-outlet 111a, the diversion section 146 can divert the airflow at the sub-outlet 111a, so that part of the airflow in the vortex air duct 151 enters the return air duct 152.

[0188] In some embodiments, the diversion section 146 is connected to the second guide section 140a. After the airflow is diverted in the diversion section 146, part of it enters the return air duct 152, while the other part is guided by the second guide section 140a and exits from the first sub-air outlet 111a.

[0189] In some embodiments, the diversion section 146 may be a protrusion protruding toward the first partition 161, and the end point of the protrusion may form a diversion point, that is, the airflow may be diverted at this point. It is understood that, in order to reduce wind resistance, the protrusion may be set as an arc-shaped protrusion.

[0190] See you again Figure 15In some embodiments, the damper 140 includes an outer shell 140c and an inner shell 140d. The outer shell 140c and the inner shell 140d are stacked, and a hollow space is formed between them. By configuring the damper 140 as a two-layer structure of outer shell 140c and inner shell 140d, and creating a hollow space between them, heat transfer between the outer shell 140c and inner shell 140d can be reduced. When the indoor unit 100 of the air conditioner is in cooling mode, the influence of the inner shell 140d within the vortex cavity 150 on the outer shell 140c can be reduced, avoiding excessive temperature differences between the outer shell 140c and the outside air of the casing 110, and preventing condensation on the outer shell 140c.

[0191] In some embodiments, a heat insulation element 147 is provided in the hollow space. By providing the heat insulation element 147 in the hollow space, the heat transfer between the outer shell 140c and the inner shell 140d can be further reduced, thereby improving the anti-condensation effect of the outer shell 140c.

[0192] Understandably, when the indoor unit 100 of the air conditioner outputs cold air, the temperature of the inner casing 140c will drop significantly. The heat transfer between the inner casing 140d and the outer casing 140c may cause the temperature of the outer casing 140c to decrease, leading to condensation on the outer casing 140c. Therefore, this application utilizes a heat-insulating element 147 between the outer casing 140c and the inner casing 140d to further reduce heat transfer between them and improve the anti-condensation effect of the outer casing 140c.

[0193] Optionally, the heat insulation component 147 can be made of materials with good heat insulation properties, such as heat insulation sponge, felt, or foam. Furthermore, the outer shell 140c and the inner shell 140d can be fixed together by means of snap-fit, screw-fit, or adhesive. This application does not specifically limit the above settings.

[0194] It is understandable that the diversion section 146 is mounted on the inner housing 140d.

[0195] In some embodiments, the inner housing 140d is stacked on the outer housing 140c near its own air outlet end. For example, the inner housing 140d may only cover no more than half of the area of ​​the outer housing 140c near the first sub-air outlet 111a. In this way, the area and volume of the inner housing 140d can be reduced, saving materials for manufacturing the damper 140, and at the same time, the size of the hollow space can be reduced to a certain extent to reduce the material consumption for manufacturing the heat insulation component 147, thereby reducing the manufacturing cost of the air conditioner indoor unit 100. In addition, by reducing the size of the inner housing 140d, the weight of the damper 140 can also be reduced, thereby reducing the driving force for driving the damper 140 to move, and thus reducing the driving power consumption.

[0196] In some embodiments, the thickness of the inner shell 140d is reduced in the direction from the air outlet end of the outer shell 140c to the windward end of the outer shell 140c. This reduces the step difference between the edge of the inner shell 140d and the surface of the outer shell 140c, thereby reducing the wind resistance to gas recirculation.

[0197] In some embodiments, the thickness of the inner housing 140d gradually decreases from the air outlet end of the outer housing 140c towards the windward end of the outer housing 140c, until the edge thickness of the inner housing 140d approaches zero. This effectively reduces the air resistance of the return air duct 152.

[0198] In some embodiments, the damper 140 further includes two side plates 148. The outer shell 140c and the inner shell 140d together constitute the door panel of the damper 140, and the two side plates 148 are respectively disposed at two opposite ends of the door panel in its own length direction. The length direction of the door panel can be the length direction of the indoor unit 100 of the air conditioner. The damper 140 can be movably connected to the housing 110 through the two side plates 148.

[0199] Please see also Figure 16 and Figure 17 , Figure 16 A cross-sectional view of an air conditioner indoor unit with two partitions, according to an embodiment of this application. Figure 17 for Figure 16 A magnified diagram of region D in the middle.

[0200] In some embodiments, the partition can be one or more. If there are multiple partitions, the indoor unit 100 may further include a second partition 162, which is fixed to the damper 140. When the damper 140 is driven, the second partition 162 moves synchronously with the damper 140. The first partition 161 and the second partition 162 are spaced apart, forming a vortex duct 151 between them. By fixing the second partition 162 to the damper 140, when the damper 140 is driven, the second partition 162 and the damper 140 move synchronously, eliminating the need for an additional drive mechanism for the second partition 162. This simplifies the internal structure of the indoor unit 100 and reduces the number of components, thereby lowering the manufacturing cost and assembly process of the indoor unit 100.

[0201] In some embodiments, the first partition 161 and the first sidewall 112 are spaced apart, thereby forming a first return air duct 152a between the first partition 161 and the first sidewall 112. The second partition 162 is located on the side of the first partition 161 opposite to the first sidewall 112 and is spaced apart from the door panel of the damper 140, thereby forming a second return air duct 152b between the second partition 162 and the door panel. The first return air duct 152a and the second return air duct 152b together constitute the aforementioned return air duct 152. This arrangement can increase the return flow rate of the airflow in the vortex cavity 150, and the returned airflow includes two parts with opposite flow directions, which can further improve the oscillation effect of the airflow in the vortex air duct 151.

[0202] Understandably, when the second partition 162 and the damper 140 form the second return air duct 152b, the diversion part 146 of the damper 140 protrudes toward the second partition 162.

[0203] In some embodiments, the two side plates 148 of the damper 140 can close the two ends of the second return air duct 152b in the length direction of the damper plate, which can prevent air leakage on both sides of the second return air duct 152b, reduce airflow loss, and facilitate the return of airflow through the second return air duct 152b and the formation of vortex in the vortex air duct 151.

[0204] Similarly, the inner wall of the casing 110 can be used to seal the two ends of the first return air duct 152a formed by the first side wall 112 and the first partition 161 along the length of the indoor unit 100, thereby increasing the length of the two ends of the first return air duct 152a along the length of the indoor unit 100. This prevents air leakage at both ends of the first return air duct 152a, reduces airflow loss, and facilitates airflow recirculation and the generation of vortex airflow.

[0205] In some embodiments, the side of the first sidewall 112 facing the first partition 161 may also be provided with the same diversion portion, in which case the diversion portion on the first sidewall 112 protrudes toward the first partition 161.

[0206] In some embodiments, the gap between the first partition 161 and the second partition 162 increases in the direction from the fan outlet 121a to the first outlet 111, that is, the vortex duct 151 is flared on one side of the first outlet 111. In other words, the distance between the windward ends of the first partition 161 and the second partition 162 is less than the distance between their outlet ends. With this configuration, when an oscillating airflow is formed within the vortex duct 151, as the airflow flows from the fan outlet 121a to the first outlet 111a, the hydraulic diameter of the vortex duct 151 increases, the wind resistance decreases, and the airflow gradually diffuses, thereby optimizing the airflow effect.

[0207] In some embodiments, the first partition 161 and the second partition 162 can be configured to have the same shape and structure. For example, both the first and second partitions can be elongated strips. In this way, the first partition 161 and the second partition 162 can be manufactured using the same tool, thereby reducing the manufacturing cost of the air conditioner indoor unit 100. Of course, the first partition 161 and the second partition 162 can also have different shapes and structures. This application uses the example of the first partition 161 and the second partition 162 having the same shape and structure for illustration.

[0208] See you again Figure 17 In some embodiments, the first partition 161 includes a first arc-shaped segment 161a, which protrudes toward the first sidewall 112. One end of the first arc-shaped segment 161a is close to the fan outlet 121a, and the other end is close to the first sub-outlet 111a. The second partition 162 includes a second arc-shaped segment 162a, which protrudes toward the damper 140. One end of the second arc-shaped segment 162a is close to the fan outlet 121a, and the other end is close to the first sub-outlet 111a. That is, the first arc-shaped segment 161a and the second arc-shaped segment 162a protrude in directions away from each other. This arrangement, in the first air supply mode, facilitates the generation of vortices between the first arc-shaped segment 161a and the second arc-shaped segment 162a, making it easier for the fluid to form an attached wall oscillation effect.

[0209] In some embodiments, the first partition 161 further includes a first straight segment 161b, which has two opposing ends, one end of which is close to the fan outlet 121a and the other end of which is close to the first sub-outlet 111a. The first straight segment 161b is located on the side of the first arc-shaped segment 161a that is close to the fan outlet 121a, and the end of the first straight segment 161b that is close to the first sub-outlet 111a is connected to the end of the first arc-shaped segment 161a that is close to the fan outlet 121a.

[0210] Accordingly, the second partition 162 also includes a second straight segment 162b, which has two opposite ends, one end of which is close to the fan outlet 121a and the other end of which is close to the first sub-outlet 111a. The second straight segment 162b is located on the side of the second arc-shaped segment 162a that is close to the fan outlet 121a, and the end of the second straight segment 162b that is close to the first sub-outlet 111a is connected to the end of the second arc-shaped segment 162a that is close to the fan outlet 121a.

[0211] By setting straight sections on the side of the first arc segment 161a and the second arc segment 162a near the fan outlet 121a, the airflow entering the vortex duct 151 from the fan outlet 121a is more likely to form a wall attachment effect at the position of the first baffle 161 and the second baffle 162 near the fan outlet 121a, thereby effectively guiding the direction of airflow.

[0212] In some embodiments, the first partition 161 further includes a third straight segment 161c, which has two opposing ends, one end of which is close to the fan outlet 121a and the other end of which is close to the first sub-outlet 111a. The third straight segment 161c is located on the side of the first arc-shaped segment 161a that is close to the first sub-outlet 111a, and the end of the third straight segment 161c that is close to the fan outlet 121a is connected to the end of the first arc-shaped segment 161a that is close to the first sub-outlet 111a.

[0213] Correspondingly, the second partition 162 also includes a fourth straight segment 162c, which has two opposite ends, one end of which is close to the fan outlet 121a and the other end is close to the first sub-outlet 111a. The fourth straight segment 162c is located on the side of the second arc-shaped segment 162a that is close to the first sub-outlet 111a, and the end of the fourth straight segment 162c that is close to the fan outlet 121a is connected to the end of the second arc-shaped segment 162a that is close to the first sub-outlet 111a. By setting a straight segment on the side of the first arc-shaped segment 161a and the second arc-shaped segment 162a that is close to the first sub-outlet 111a, the airflow close to the surface of the first partition 161 and the second partition 162 in the vortex duct 151 can be guided to their respective return ducts by utilizing the wall attachment effect. This effectively guides the airflow into the return duct, forming a circulating airflow inside the vortex cavity 150, thereby causing the airflow to generate self-excited oscillation, which is beneficial for achieving diffused airflow.

[0214] See you again Figure 17In some embodiments, in the first air supply mode, the distance between the end of the first straight segment 161b near the fan outlet 121a and the end of the second straight segment 162b near the fan outlet 121a is d2; the distance between the end of the first arc-shaped segment 161a near the fan outlet 121a and the end of the second arc-shaped segment 162a near the fan outlet 121a is d3; the distance between the end of the first arc-shaped segment 161a near the first sub-outlet 111a and the end of the second arc-shaped segment 162a near the first sub-outlet 111a is d4; and the distance between the end of the third straight segment 161c near the first sub-outlet 111a and the end of the fourth straight segment 162c near the first sub-outlet 111a is d5. Wherein, d2, d3, d4, and d5 satisfy the following relationships: d2 < d3, and / or d2 < d4, and / or d2 < d5. Thus, in the direction from the fan outlet 121a to the first sub-outlet 111a, the distance between the first partition 161 and the second partition 162 is increased, forming an expanded opening. This allows the airflow between the first partition 161 and the second partition 162 to gradually diffuse as it flows from the fan outlet 121a to the first sub-outlet 111a. This facilitates the continued entry of some airflow into the return air duct 152 for circulation and also helps to achieve diffused airflow, reducing the feeling of being blown out.

[0215] In some embodiments, d3, d4, and d5 also satisfy the relationship: d3 < d4, and / or d3 < d5. Thus, an expansion opening is also provided between the first arc segment 161a and the second arc segment 162a, which can gradually expand the vortex airflow between the first arc segment 161a and the second arc segment 162a, effectively guiding the airflow at the first sub-outlet 111a.

[0216] In some embodiments, d4 and d5 also satisfy the relationship: d4 < d5. Thus, when the indoor unit 100 of the air conditioner is in the first air supply mode, the third straight segment 161c can better guide the airflow to the first return air duct 152a, and the fourth straight segment 162c can better guide the airflow to the second return air duct 152b.

[0217] See you again Figure 17 In some embodiments, the distance between the diversion portion of the first sidewall 112 and the diversion portion 146 of the damper 140 is d6, and d5 and d6 satisfy the relationship: d5≥d6. This arrangement ensures that the airflow guided to the first sub-outlet 111a by the first straight segment 161c and the second straight segment 162c is diverted and partially diverted, thereby correspondingly entering the first return air duct 152a and the second return air duct 152b.

[0218] Optionally, the first partition 161 can move by rotating or sliding, and the position of the first straight segment 161b and the third straight segment 161c of the first partition 161 relative to the first sidewall 112 can be changed by rotating or sliding.

[0219] Accordingly, the damper 140 can move by rotating or sliding, and by rotating or sliding, the position of the damper 140 can be changed to drive the second partition 162 to change the position of the second straight segment 162b and the fourth straight segment 162c relative to the first side wall 112.

[0220] Understandably, when the first partition 161 and the damper 140 move by rotation, the rotation center of the first partition 161 and the damper 140 can be set at their respective centers of gravity. In this way, the driving force required to drive the first partition 161 and the damper 140 to rotate can be reduced, and the vibration during the rotation process can be reduced, thereby reducing the noise during the operation of the indoor unit 100 of the air conditioner. On this basis, there is no need to carry out additional motion balance design for the first partition 161 and the damper 140, which can also reduce the design cost.

[0221] See you again Figure 17 In some embodiments, when the indoor unit 100 of the air conditioner is in the first air supply mode, in order to ensure that the diffused air has a large air volume, it is necessary to ensure that the inlet of the vortex duct 151 has an appropriate size, thereby increasing the air intake of the vortex duct 151. At this time, the distance between the volute tongue 123 at the position forming the fan outlet 121a and the windward end of the damper 140 is d7. d7 and the distance d2 between the end of the first straight segment 161b near the fan outlet 121a and the end of the second straight segment 162b near the fan outlet 121a in the first air supply mode satisfy the relationship: d7 < d2. This setting can ensure the air volume entering the vortex duct 151, and also ensure that the airflow returning from the first return duct 152a can mix with the airflow at the fan outlet 121a and drive the airflow direction to change. If d7 > d2, when the airflow in the return air duct 152 flows back to the fan outlet 121a, it may be completely opposite to the airflow direction at the fan outlet 121a, which will significantly weaken the airflow in the vortex cavity 150, causing a large loss of air volume and causing turbulence in the airflow inside the vortex cavity 150, which is not conducive to the formation of vortex.

[0222] In some embodiments, the distance d7 between the volute tongue 123 at the position forming the fan outlet 121a and the end of the damper near the fan outlet, and the distance d2 between the end of the first straight segment 161b near the fan outlet 121a and the end of the second straight segment 162b near the fan outlet 121a in the first air supply mode, also satisfy the relationship: 1.1d7 < d2, and / or, d2 < 2d7.

[0223] When d7 and d2 satisfy the inequality 1.1d7<d2, it can be ensured that the fan outlet 121a is smaller than the inlet of the vortex duct 151 formed by the first partition 161 and the second partition 162. This can avoid the situation where the fan outlet 121a is equal to or larger than the inlet of the vortex duct 151 due to manufacturing tolerances or other reasons. This ensures that the airflow after recirculation can mix with the airflow at the fan outlet 121a. It can also prevent the airflow output from the fan outlet 121a from directly entering the return duct 152 at the fan outlet 121a and causing it to collide with the airflow in the return duct 152.

[0224] When d2 < 2d7, the inlet of the vortex duct 151 can be prevented from being too large, thus preventing the airflow from failing to form a circulation and vortex airflow between the first partition 161 and the second partition 162 and directly exiting from the first sub-outlet 111a.

[0225] Please see also Figure 18 , Figure 18 This is a schematic diagram of gas flow in the first air supply mode of an air conditioner indoor unit with two partitions according to an embodiment of this application. When the air conditioner indoor unit 100 is in the first air supply mode, the first partition 161 is spaced apart from the first side wall 112, and spaced apart from the second partition 162 and the damper 140. When the airflow enters the air supply cavity formed by the casing 110 from the fan outlet 121a, the airflow is affected by the first guide section 141 of the damper 140 at the fan outlet 121a and is divided into two parts. One part enters the vortex cavity 150, and the other part enters the guide air duct 153 and is transported to the outside of the casing 110 from the second sub-outlet 111b. When the airflow entering the vortex cavity 150 reaches the first sub-outlet 111a, it is divided into three parts: one part is transported from the first sub-outlet 111a to the outside of the casing 110; one part flows back from the first return air duct 152a to the fan outlet 121a; and one part flows back from the second return air duct 152b to the fan outlet 121a. The two parts of airflow that flow back to the fan outlet 121a mix with the airflow at the fan outlet 121a, generating self-excited oscillation. After forming an oscillating airflow, it is transported to the outside of the casing 110 through the first sub-outlet 111a.

[0226] Please combine Figure 19 As shown, Figure 19This is a schematic diagram of gas flow in the second air supply mode of an indoor air conditioning unit with two partitions according to an embodiment of this application. When the indoor air conditioning unit 100 is in the second air supply mode, the first partition 161 moves relative to the first side wall 112, while the damper 140 can remain stationary relative to the first side wall 112. When the first partition 161 moves to the point where the end of the first straight segment 161b near the fan outlet 121a approaches the second partition 162, and the end of the third straight segment 161c near the first sub-outlet 111a abuts against the first side wall 112, the first return air duct 152a is blocked, preventing backflow. Part of the airflow entering the vortex air duct 151 enters the space defined by the surface of the first partition 161 away from the second partition 162 and the first side wall 112. Since the first return air duct 152a cannot flow, static pressure is generated in this space, which can increase the gas velocity to a certain extent, thereby increasing the deflection angle. Another portion of the airflow entering the vortex duct 151 flows along the surface of the second partition 162 toward the first partition 161. When this portion of the airflow reaches the first sub-outlet 111a, it splits into two parts. One part is influenced by the second guide section 140a on the damper 140 and is transported to the outside of the housing 110 in a direction deflected toward the first sidewall 112. The other part flows along the first sidewall 112, guided by the first guide section 112a, and flows to the surface of the first partition 161 toward the second partition 162. It then flows again from the surface of the first partition 161 to the surface of the second partition 162 toward the first partition 161, mixing with the airflow at the fan outlet 121a to form a vortex airflow. The vortex airflow can drive the airflow output from the first sub-outlet 111a to the outside of the housing 110 to continue to deflect toward the first sidewall 112, thereby achieving a larger angle of airflow.

[0227] For example, when the first partition 161 rotates about 30° relative to the first side wall 112, the indoor unit 100 of the air conditioner can achieve an upward air supply angle of 45°. Of course, the first partition 161 can also rotate at other angles relative to the first side wall 112, or rotate until the air outlet end 161d of the first partition 161 abuts against the first side wall 112, which can also increase the upward air supply angle of the indoor unit 100 of the air conditioner.

[0228] It should be noted that the vortex airflow has the following main effects on the airflow within the vortex duct 151: First, the vortex airflow impacts the airflow between the first straight section 161b and the second straight section 162b, causing it to further adhere to the surface of the second partition 162 facing the first partition 161, and flow along the surface of the second partition 162. Second, when the airflow flowing along the surface of the second partition 162 to the first sub-outlet 111a is deflected by the second guide section 140a, the vortex airflow further drives the deflected airflow to deflect further in the same direction.

[0229] It is understandable that, taking the vortex cavity 150 as an axisymmetric figure with an axis of symmetry LA on the cross section perpendicular to the length direction L of the air conditioner indoor unit 100 as an example, in the second air supply mode, when a part of the airflow is affected by the second guide part 140a on the damper 140 and is delivered to the outside of the casing 110 in a direction deflected towards the first side wall 112 at the first sub-air outlet 111a, the angle between the flow direction of the airflow and the flow direction of the airflow at the fan outlet 121a is α1, that is, the angle between the flow direction of the airflow deflected by the second guide part 140a and the axis of symmetry LA of the vortex cavity 150 is α1. The airflow at the first sub-outlet 111a is driven by the vortex airflow and further deflected. The angle between the airflow direction at this time and the airflow direction at the fan outlet 121a is α2. That is, the angle between the airflow direction further deflected by the vortex airflow and the axis of symmetry LA of the vortex cavity 150 is α1, and α1 < α2.

[0230] It should be noted that in the second air supply mode, a portion of the airflow entering the air supply chamber enters the guide air duct 153 and is transported to the outside of the housing 110 from the second sub-outlet 111b. Because the airflow output from the first sub-outlet 111a deflects towards the first sidewall 112, a low-pressure area is formed in the second sub-guide section 143 of the damper 140. This allows the airflow at the connection between the first sub-guide section 142 and the second sub-guide section 143 to deflect towards the first sidewall 112 under the influence of the air pressure difference, and mix with the airflow output from the first sub-outlet 111a.

[0231] See also Figure 20 , Figure 20This is a schematic diagram of gas flow in the third air supply mode of an air conditioner indoor unit with two partitions according to an embodiment of this application. When the air conditioner indoor unit 100 is in the third air supply mode, the damper 140 moves relative to the first side wall 112, and the first partition 161 moves relative to the first side wall 112. For example, the damper 140 rotates relative to the first side wall 112, causing the windward end of the damper 140 to move towards the first partition 161, and the first partition 161 rotates relative to the first side wall 112 until its windward end abuts against the first side wall 112. At this time, the first return air duct 152a is cut off, and no return flow can be formed. Part of the airflow entering the vortex air duct 151 enters the space defined by the surface of the first partition 161 away from the second partition 162 and the first side wall 112. Since the first return air duct 152a cannot flow, static pressure is generated in this space, which can increase the gas velocity to a certain extent, thereby increasing the deflection angle. Another portion of the airflow entering the vortex duct 151 flows along the surface of the first partition 161 toward the second partition 162. This portion of airflow splits into two parts upon reaching the first sub-outlet 111a. One part, influenced by the first guide section 112a on the first sidewall 112, is directed towards the damper and delivered to the outside of the housing 110. The other part flows along the damper 140, guided by the second guide section 140a, and enters the second return duct 152b. From there, it flows to the fan outlet 121a, where it mixes with the airflow, forming a vortex airflow. This vortex airflow can further deflect the airflow output from the first sub-outlet 111a to the outside of the housing 110 toward the damper 140, achieving a larger angle of airflow. It should be noted that in the third air supply mode, the direction of the vortex airflow is opposite to that in the second air supply mode.

[0232] In one example, the cross-sectional profile of the vortex cavity 150 along the length L perpendicular to the indoor unit 100 is described as an axisymmetric figure with an axis of symmetry LA. The airflow at the fan outlet 121a is divided into two parts at the windward end of the damper 140. The airflow entering the guide duct 153 is affected by the windward end of the damper 140 and deflects towards the second sidewall 113. The angle between the deflection direction and the axis of symmetry LA of the vortex cavity 150 is α3. The airflow entering the vortex duct 151 is affected by the outlet 161d of the first baffle 161 and deflects towards the second sidewall 113. The angle between the deflection direction and the axis of symmetry LA of the vortex cavity 150 is α4. The airflow is further deflected towards the second sidewall 113 due to the influence of the vortex airflow, and the angle between the deflection direction and the axis of symmetry L of the vortex cavity 150 is α5. Where α4 < α5. The specific sizes of α3 and α4 are actually determined by the rotation angles of the damper 140 and the first partition 161 relative to the first sidewall 112. In one example, α3 = 10°, α4 = 30°, and α5 = 45°.

[0233] Optionally, in the third air supply mode, the rotation angle of the damper 140 relative to the first sidewall 112 is 10° to 30°. By limiting the rotation angle of the damper 140, the inlet of the vortex cavity 150 formed after the damper 140 rotates can be made to a reasonable size, ensuring sufficient airflow in the vortex cavity 150, thereby forming the expected vortex airflow. This allows the vortex airflow to be used to increase the air outlet angle of the indoor unit 100. When the damper rotation angle is less than 10° or more than 30°, the inlet of the vortex cavity 150 is too small, resulting in insufficient airflow into the vortex cavity 150 and insufficient vortex airflow intensity formed in the vortex duct 151.

[0234] When the rotation angle of the damper 140 relative to the first sidewall 112 is 10° to 16°, such as 10°, 13°, and 15°, the rotation stroke of the damper 140 can be reduced while ensuring sufficient airflow to the vortex cavity 150, thereby accelerating the switching speed of the indoor unit 100 to the third air supply mode. When the rotation angle of the damper 140 relative to the first sidewall 112 is 17° to 24°, the inlet size of the vortex cavity 150 can be appropriately increased while balancing the rotation stroke of the damper 140, thereby increasing the airflow entering the vortex cavity 150, which is beneficial for increasing the airflow output of the large-angle air supply. When the rotation angle of the damper 140 relative to the first sidewall 112 is 25° to 30°, the airflow entering the vortex cavity 150 can be significantly increased, which is beneficial for increasing the airflow output of the large-angle air supply.

[0235] It is understandable that in the third air supply mode, the influence of the first guide section 112a and the vortex airflow on the airflow in the vortex duct 151 is the same as the influence of the second guide section 140a and the vortex airflow on the airflow in the vortex duct 151 in the second air supply mode, and will not be elaborated here.

[0236] In the third air supply mode, similar to the first air supply mode, a portion of the airflow entering the air supply chamber enters the guide duct 153 and is transported to the outside of the housing 110 from the second sub-outlet 111b. At the junction of the first sub-guide section 142 and the second sub-guide section 143 of the damper 140, due to the large curvature, the airflow undergoes boundary separation, thereby enabling it to change direction and mix with the airflow output from the first sub-outlet 111a.

[0237] Therefore, the air conditioner indoor unit 100 of this application can have different air supply modes, and the switching of different air supply modes can be achieved by simply driving the first partition 161 or the second partition 162 to make a small angle movement, so that the air conditioner indoor unit 100 has the characteristics of short switching time and fast response when switching different modes.

[0238] Meanwhile, this application utilizes the first partition 161 and the second partition 162 to form a first return air duct 152a and a second return air duct 152b inside the vortex cavity 150. Through the first return air duct 152a and the second return air duct 152b, part of the airflow is returned to the fan outlet 121a. The returned airflow can mix with the airflow output from the fan outlet 121a to generate self-excited oscillation, thereby realizing the diffused airflow of the air conditioner indoor unit 100, improving the heat exchange efficiency of the air conditioner indoor unit 100 during operation, and thus reducing power consumption.

[0239] In addition, by moving the first partition 161 or the second partition 162 relative to the first side wall 112, this application enables the first partition 161 and the second partition 162 to change the direction of the airflow inside the vortex cavity 150, thereby forming a vortex airflow inside the vortex duct 151. The vortex airflow can be used to guide the airflow output from the fan outlet 121a, further increasing the air supply angle of the air conditioner indoor unit 100 to supply air upwards and / or downwards, thereby enabling the air conditioner indoor unit 100 to supply air at a large angle and over a wide range.

[0240] See also Figure 21 , Figure 21 This is a three-dimensional structural diagram of an air conditioner according to an embodiment of this application.

[0241] A second aspect of this application also provides an air conditioner 200, see [link to document]. Figure 21 It includes an outdoor unit 210 and an indoor air conditioner 100 as described in any of the above embodiments. The outdoor unit 210 can be connected to the indoor air conditioner 100 through pipes, cables, etc.

[0242] The air conditioner indoor unit and air conditioner provided in the embodiments of the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the idea of ​​the present invention. There may be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An air conditioner indoor unit characterized by comprising: include: The housing is provided with a first air outlet; A duct component is disposed inside the housing, forming a fan duct, and the fan duct has a fan outlet. A fan, wherein the fan is installed inside the fan duct; The indoor unit of the air conditioner also includes: A damper is movably connected to the housing and located on the air outlet side of the fan duct. The damper is used to open or close the first air outlet. The damper is spaced apart from at least a portion of the first sidewall of the housing to form a vortex cavity. The vortex cavity is connected to the fan duct through the fan outlet and is connected to the first air outlet to discharge air to the outside of the housing. A first partition is movably disposed within the vortex cavity, dividing the vortex cavity into a vortex air duct and a return air duct, which are used to circulate airflow within the vortex air duct and the return air duct. When the damper opens the first air outlet, both the first partition and the damper are configured to move relative to the first sidewall to change the air outlet angle of the vortex duct.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The indoor unit of the air conditioner has a first air supply mode, a second air supply mode and a third air supply mode; In the first air supply mode, the vortex air duct is constructed between the first partition and the damper, and the return air duct is constructed between the first partition and the first sidewall. The first partition can be movable relative to the first side wall so that the air outlet end of the first partition is close to the first side wall, so that the indoor unit of the air conditioner switches to the second air supply mode; The first partition can move relative to the first side wall so that the windward end of the first partition is close to the first side wall, and the windward end of the damper can move toward the direction close to the first partition so that the indoor unit of the air conditioner switches to the third air supply mode. Among them, the first air supply mode, the second air supply mode and the third air supply mode are all different air supply modes, the air outlet end of the first partition is the end close to the first air outlet, the windward end of the first partition is the end close to the air outlet of the fan; the windward end of the damper is the end close to the air outlet of the fan.

3. The indoor unit of the air conditioner according to claim 1, characterized in that, The indoor unit of the air conditioner also includes: The second partition is fixed to the damper, and the vortex air duct is formed between the first partition and the second partition; The return air duct includes: The first return air duct is constructed by spacing between the first partition and the first sidewall; The second return air duct is formed between the second partition and the damper.

4. The indoor unit of the air conditioner according to claim 3, characterized in that, The indoor unit of the air conditioner has a first air supply mode; The air duct component includes: Snail shell; The volute tongue is spaced apart from the volute shell to form the fan duct and the fan outlet. In the first air supply mode, the distance between the position of the volute tongue forming the fan outlet and the windward end of the damper is d7, and the distance between the windward end of the first partition and the windward end of the second partition is d2, where d7 < d2. The windward end of the second partition is the end closest to the air outlet of the fan.

5. The indoor unit of the air conditioner according to claim 4, characterized in that, The distance d7 between the volute tongue at the location forming the air outlet of the fan and the windward end of the damper, and the distance d2 between the windward ends of the first partition and the second partition, also satisfy the following: 1.1d7 < d2, and / or, d2 < 2d7.

6. The indoor unit of the air conditioner according to claim 4, characterized in that, The indoor unit of the air conditioner has a second air supply mode; The housing also includes: The second sidewall is disposed opposite to the first sidewall, and the first air outlet is formed between the first sidewall and the second sidewall. The volute is connected to the second sidewall. The cross-section of the volute tongue in the direction perpendicular to the length of the indoor unit of the air conditioner includes: An arc segment, the arc segment protruding toward the volute; A straight segment, which connects to the arc segment, extends along the direction of the fan outlet toward the first air outlet; In the second air supply mode, the distance between the straight segment and the windward end of the damper on the cross section is d0, and the distance between the straight segment and the extension line of the connection position of the volute and the second sidewall on the cross section is d1, where 3d0 > d1.

7. The indoor unit of the air conditioner according to claim 3, characterized in that, The damper includes: A door panel, wherein the vortex cavity is formed between the door panel and the first sidewall; Two side panels are respectively disposed at two opposite ends of the door panel along the length direction of the door panel. The two ends of the second partition along the length direction of the door panel are respectively fixed to the two side panels. The two side panels enclose the two sides of the second return air duct along the length direction of the door panel.

8. The indoor unit of the air conditioner according to any one of claims 2-7, characterized in that, The indoor unit of the air conditioner has a third air supply mode; The damper is rotatably connected to the housing. When the damper opens the first air outlet, the damper can rotate relative to the first side wall by a preset angle, so that the indoor unit of the air conditioner switches to the third air supply mode. The preset angle is 10°-30°.

9. The indoor unit of the air conditioner according to any one of claims 1-7, characterized in that, The damper includes: outer shell; An inner shell is disposed on the side of the outer shell facing the first partition, and a hollow space is formed between the outer shell and the inner shell to reduce heat transfer between the outer shell and the inner shell.

10. The indoor unit of the air conditioner according to claim 9, characterized in that, The inner shell is stacked on the air outlet end of the outer shell, and the thickness of the inner shell at the air outlet end of the outer shell is reduced in the direction from the air outlet end of the outer shell to the air-facing end of the outer shell. Wherein, the air outlet end of the outer shell is the end near the first air outlet, the windward end of the outer shell is the end near the air outlet of the fan, and the windward end of the inner shell is the end near the air outlet of the fan.

11. The indoor unit of the air conditioner according to any one of claims 1-7, characterized in that, The housing also includes: The second sidewall is disposed opposite to the first sidewall, and the first air outlet is formed between the first sidewall and the second sidewall. The damper is configured to form a guide air duct with at least a portion of the second sidewall when the first air outlet is opened. The guide air duct is connected to the fan air duct through the fan outlet. The first air outlet includes: The first sub-air outlet is formed between the first sidewall and the air damper, and the vortex air duct is connected to the first sub-air outlet to deliver airflow to the outside of the housing. The second sub-air outlet is formed between the second sidewall and the air damper, and the air guide duct is connected to the second sub-air outlet to deliver airflow to the outside of the housing.

12. The indoor unit of the air conditioner according to claim 11, characterized in that, The damper includes: The first drainage segment has a first end and a second end that are opposite each other; The second drainage section has a third end and a fourth end opposite to each other, the third end being connected to the second end; When the damper opens the first air outlet, the first guide section is located at the end of the second guide section near the air outlet of the fan. The first guide section is used to guide part of the airflow at the air outlet of the fan into the guide duct; the second guide section is used to guide the airflow to the second sub-air outlet.

13. The indoor unit of the air conditioner according to claim 12, characterized in that, The second drainage segment includes: The first sub-drainage segment has a fifth end and a sixth end opposite to each other, and the fifth end is connected to the second end; The second sub-drainage section has a seventh end and an eighth end, the seventh end being connected to the sixth end, and the eighth end being configured with the first sidewall to form the first sub-air outlet. The first sub-guide section is used to guide the airflow to the second sub-guide section. The second sub-guide section is located on the side of the first sub-guide section close to the second sub-outlet. The second sub-guide section is used to guide the airflow in the guide duct to mix with the airflow output by the vortex duct through the first sub-outlet.

14. An indoor unit for an air conditioner, characterized in that, The housing is provided with a first air outlet; A duct component is disposed inside the housing, forming a fan duct, and the fan duct has a fan outlet. A fan, wherein the fan is installed inside the fan duct; The indoor unit of the air conditioner also includes: A damper is movably connected to the housing and located on the air outlet side of the fan duct. The damper is used to open or close the first air outlet. The damper is spaced apart from at least a portion of the first sidewall of the housing to form a vortex cavity. The vortex cavity is connected to the fan duct through the fan outlet and is connected to the first air outlet to discharge air to the outside of the housing. A first partition is movably disposed within the vortex cavity, dividing the vortex cavity into a vortex air duct and a return air duct, which are used to circulate airflow within the vortex air duct and the return air duct. The air conditioner indoor unit includes a first air supply mode, a second air supply mode and a third air supply mode. When the damper opens the first air outlet, both the first partition and the damper are configured to be movable relative to the first side wall so that the air conditioner indoor unit can switch to different air supply modes. In the first air supply mode, part of the airflow in the vortex duct circulates between the vortex duct and the return duct, and mixes with the airflow at the fan outlet before being discharged through the first outlet. In the second air supply mode, part of the airflow in the vortex duct forms a vortex airflow in the vortex duct, and another part of the airflow is directed towards the first sidewall and discharged through the first air outlet. In the third air supply mode, part of the airflow in the vortex duct forms a vortex airflow in the vortex duct, and another part of the airflow is directed towards the damper and discharged through the first air outlet.

15. An air conditioner characterized by comprising: Including the air conditioning indoor unit as described in any one of claims 1-14.

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