Air conditioner indoor unit and air conditioner unit

Abstract

The utility model relates to an air conditioner indoor unit and an air conditioner unit. The cross-flow fan is arranged in the shell, the cross-flow fan comprises a volute assembly, the volute assembly is provided with an air outlet, and the volute assembly is rotatably switched between a first position and a second position around the central axis of the volute assembly, so that the air conditioner indoor unit is switched between an upper air outlet state of a refrigeration mode and a lower air outlet state of a heating mode; the first limiting air guiding assembly and the second limiting air guiding assembly are both movably connected to the inner wall of the shell, the first limiting air guiding assembly is configured to limit the volute assembly to the first position and is configured to form a first air guiding channel communicating with the air outlet and the first opening, and the second limiting air guiding assembly is configured to form a second air guiding channel communicating with the second opening. The second limiting air guide assembly is configured to limit the volute assembly to the second position and is configured to form a second air guide duct communicating with the air outlet and the second opening. According to the air conditioner indoor unit, the refrigerating and heating effects can be optimized.

Description

Technical Field

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

[0002] Improving the comfort of air conditioners is a common challenge in the industry. On the one hand, because cold air sinks, it tends to cool only the area below and in front of the air outlet, preventing the airflow from reaching further areas and resulting in uneven indoor temperatures. On the other hand, because hot air rises, it is difficult to heat areas near the ground, leading to uneven indoor temperatures as well. Utility Model Content

[0003] The embodiments of this disclosure provide an indoor air conditioning unit and an air conditioning system that can optimize cooling and heating performance.

[0004] According to a first aspect of this disclosure, an air conditioning indoor unit is provided, comprising:

[0005] The housing includes a top plate, a bottom plate, and a front plate. The top plate and the bottom plate are spaced apart from each other along a first direction. The front plate is connected between the top plate and the bottom plate. The front plate has a first opening for air outlet in cooling mode, the bottom plate has a second opening for air outlet in heating mode, and the top plate has a third opening for air return.

[0006] A cross-flow fan, housed within a casing, includes a volute assembly with an air outlet. The volute assembly is rotatably switched between a first position and a second position around its central axis, allowing the indoor unit of the air conditioner to switch between an upper air outlet state in cooling mode and a lower air outlet state in heating mode. The central axis extends along a second direction, perpendicular to the first direction.

[0007] Both the first limiting air guide assembly and the second limiting air guide assembly are movably connected to the inner wall of the housing. The first limiting air guide assembly is configured to limit the volute assembly to a first position and is configured to form a first air guide duct connecting the air outlet and the first opening. The second limiting air guide assembly is configured to limit the volute assembly to a second position and is configured to form a second air guide duct connecting the air outlet and the second opening.

[0008] In some embodiments, the first limiting air guide assembly is movably connected to the front panel, and / or the second limiting air guide assembly is movably connected to the bottom panel.

[0009] In some embodiments, the volute assembly includes a volute and a volute tongue.

[0010] When the indoor unit of the air conditioner is in cooling mode, the first limiting air guide component has a first overlapping section with the volute tongue and a second overlapping section with the volute casing, and / or when the indoor unit of the air conditioner is in heating mode, the second limiting air guide component has a third overlapping section with the volute tongue and a fourth overlapping section with the volute casing.

[0011] In some embodiments, when the indoor unit of the air conditioner is in cooling mode, the second limiting air guide assembly is configured to close the second opening, and / or when the indoor unit of the air conditioner is in heating mode, the first limiting air guide assembly is configured to close the first opening.

[0012] In some embodiments,

[0013] The first limiting air guide assembly includes a first limiting member and a second limiting member. When the volute assembly is in the first position, the first limiting member is configured to restrict the air outlet from rotating towards the direction near the top plate, and the second limiting member is configured to restrict the air outlet from rotating towards the direction near the bottom plate; and / or

[0014] The second limiting air guide assembly includes a third limiting member and a fourth limiting member. When the volute assembly is in the second position, the third limiting member is configured to restrict the air outlet from rotating toward the direction closer to the front panel, and the fourth limiting member is configured to restrict the air outlet from rotating toward the direction away from the front panel.

[0015] In some embodiments, the volute assembly includes a volute and a volute tongue, a first limiting member and a third limiting member are configured to limit the volute tongue, and a second limiting member and a fourth limiting member are configured to limit the volute.

[0016] In some embodiments,

[0017] The first limiting air guide assembly includes a first limiting member and a second limiting member. The first limiting member is rotatably disposed on the side of the first opening near the top plate, and the second limiting member is rotatably disposed on the side of the first opening near the bottom plate; and / or

[0018] The second limiting air guide assembly includes a third limiting member and a fourth limiting member. The third limiting member is rotatably disposed on the side of the second opening near the front panel, and the fourth limiting member is rotatably disposed on the side of the second opening away from the front panel.

[0019] In some embodiments,

[0020] The first limiting air guide assembly further includes a first driving component and a second driving component, wherein the first driving component is configured to drive the first limiting member to rotate, and the second driving component is configured to drive the second limiting member to rotate; and / or

[0021] The second limiting air guide assembly also includes a third driving component and a fourth driving component. The third driving component is configured to drive the third limiting member to rotate, and the fourth driving component is configured to drive the fourth limiting member to rotate.

[0022] In some embodiments, at least one of the first drive component, the second drive component, the third drive component, and the fourth drive component includes a position holding mechanism, which is configured to lock the corresponding limit member in a limit position.

[0023] In some embodiments,

[0024] During the rotation of the volute assembly to the second position, the inner surfaces of both the third and fourth limiting members form acute angles with the base plate; and / or

[0025] During the rotation of the volute assembly to the first position, the inner surfaces of the first and second limiting members both form an acute angle with the front plate.

[0026] In some embodiments, the housing further includes a rear plate, which is spaced apart from the front plate along a third direction, which is perpendicular to the first and second directions. The rear plate has a fourth opening on the side near the top plate, which is used to open to assist in air return when the indoor unit of the air conditioner is in cooling mode, and to close when the indoor unit of the air conditioner is in heating mode.

[0027] In some embodiments, a first guide vane is provided on the rear plate, the first guide vane is connected to the side of the fourth opening away from the top plate, the first guide vane is arc-shaped and protrudes toward the top plate, and the first guide vane is configured to guide the return air of the fourth opening.

[0028] In some embodiments, the volute assembly is provided with an air inlet and a volute tongue, and the indoor unit of the air conditioner further includes:

[0029] The heat exchanger is located between the third opening and the air inlet; and

[0030] The second deflector is configured to guide the airflow blocked by the volute tongue into the air inlet when the volute assembly is in the first position.

[0031] In some embodiments, the second guide plate is connected between the first end of the volute tongue near the air inlet and the second end of the volute tongue near the air outlet, and the second guide plate is arc-shaped and protrudes toward the top plate.

[0032] According to a second aspect of this disclosure, an air conditioning unit is proposed, including the indoor unit of the above-described embodiments.

[0033] Based on the above technical solutions, the indoor unit of the air conditioner in this embodiment of the present disclosure, through the rotatable volute assembly, can switch between the upper air outlet state in cooling mode and the lower air outlet state in heating mode, thereby optimizing the cooling and heating effect and improving user comfort by delivering cold air as far as possible and hot air as close to the ground as possible. By setting a first opening for air outlet in cooling mode on the front plate and a second opening for air outlet in heating mode on the bottom plate, the uniformity of distribution of cold and hot airflow during indoor movement can be increased. By setting air outlets on the front plate and the bottom plate respectively to achieve upper and lower air outlets, it is not necessary to forcibly guide the airflow at the fan outlet to change the airflow direction, thereby reducing airflow impact loss and increasing the air delivery distance. The first limiting air guide assembly and the second limiting air guide assembly can not only limit the volute assembly, but also serve as extensions of the volute and the volute tongue. Attached Figure Description

[0034] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this application, illustrate exemplary embodiments of this disclosure and are used to explain this disclosure, but do not constitute an undue limitation of this disclosure. In the drawings:

[0035] Figure 1 This is a structural schematic diagram of some embodiments of the air conditioner indoor unit in the upward air outlet state of this disclosure.

[0036] Figure 2 This is a structural schematic diagram of some embodiments of the air conditioner indoor unit in the downward air outlet state of this disclosure.

[0037] Figure 3 This is a schematic diagram of the structure of some embodiments of the air conditioner indoor unit switching between the upper air outlet state and the lower air outlet state disclosed herein.

[0038] Figure 4 This is a schematic diagram of the structure of some other embodiments of the switching process of the indoor unit of the air conditioner in the present disclosure between the upper air outlet state and the lower air outlet state.

[0039] Explanation of reference numerals in the attached figures

[0040] 1. Shell; 2. Volute assembly; 4. Heat exchanger; 5. Second guide vane; 11. Top plate; 12. Bottom plate; 13. Front plate; 14. Rear plate; 141. First guide vane; 10. First opening; 20. Second opening; 30. Third opening; 40. Fourth opening; 21. Air outlet; 22. Air inlet; 201. Volute; 202. Volute tongue; 31. First limiting air guide assembly; 311. First limiting component; 312. Second limiting component; 32. Second limiting air guide assembly; 323. Third limiting component; 324. Fourth limiting component; x, second direction; y, third direction; z, first direction. Detailed Implementation

[0041] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the present disclosure or its application or use. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that the present disclosure will be thorough and complete, and will fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless specifically stated otherwise, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0042] The terms "first," "second," and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "above," "below," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.

[0043] In this disclosure, when a particular device is described as being located between a first device and a second device, an intermediary device may or may not be present between the particular device and the first or second device. When a particular device is described as being connected to other devices, the particular device may be directly connected to the other devices without an intermediary device, or it may be not directly connected to the other devices but have an intermediary device.

[0044] All terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as a dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0045] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0046] Based on the embodiments disclosed above, in the absence of explicit denial or conflict, the technical features of one embodiment may be advantageously combined with one or more other embodiments.

[0047] First, this disclosure proposes an indoor unit for an air conditioner, such as Figures 1 to 4 As shown, it includes:

[0048] The housing 1 includes a top plate 11, a bottom plate 12 and a front plate 13. The top plate 11 and the bottom plate 12 are arranged at intervals relative to each other along a first direction z. The front plate 13 is connected between the top plate 11 and the bottom plate 12. The front plate 13 is provided with a first opening 10 for air outlet in cooling mode. The bottom plate 12 is provided with a second opening 20 for air outlet in heating mode. The top plate 11 is provided with a third opening 30 for air return.

[0049] A cross-flow fan, housed within a casing 1, includes a volute assembly 2. The volute assembly 2 has an air outlet 21. The volute assembly 2 is rotatably switched between a first position and a second position around its central axis, allowing the indoor unit of the air conditioner to switch between an upper air outlet state in cooling mode and a lower air outlet state in heating mode. The central axis extends along a second direction x, which is perpendicular to the first direction z.

[0050] The first limiting air guide assembly 31 and the second limiting air guide assembly 32 are both movably connected to the inner wall of the housing 1. The first limiting air guide assembly 31 is configured to limit the volute assembly 2 to a first position and is configured to form a first air guide duct connecting the air outlet 21 and the first opening 10. The second limiting air guide assembly 32 is configured to limit the volute assembly 2 to a second position and is configured to form a second air guide duct connecting the air outlet 21 and the second opening 20.

[0051] Specifically, the housing 1 also includes a rear plate 14, a front plate 13 and a rear plate 14, which are arranged relatively spaced along a third direction y, perpendicular to a first direction z and a second direction x. The first direction z can be the height direction. The top plate 11, the bottom plate 12, the front plate 13, the rear plate 14 and the two side plates close together to form an accommodating space for the cross-flow fan and the heat exchanger 4.

[0052] Specifically, the volute assembly 2 extends along the second direction x, and includes an air outlet 21 and an air inlet 22, both of which also extend along the second direction x. The cross-flow fan includes cross-flow blades disposed within the volute assembly 2, with the central axis of the volute assembly 2 passing through the center of the cross-flow blades. The heat exchanger 4 extends along the second direction x and is located between the third opening 30 and the air inlet 22.

[0053] Specifically, by providing a first opening 10 for cooling mode airflow on the front panel 13, the cold air is directed upwards at an angle, preventing direct airflow and allowing for more even distribution of the cold air throughout the room as it descends, creating a shower-like cooling effect and improving cooling efficiency and user comfort. Similarly, by providing a second opening 20 for heating mode airflow on the bottom panel 12, the hot air is directed downwards at an angle, allowing the hot air to be delivered directly to the ground and distributed more evenly throughout the room as it rises, creating a carpet-like heating effect and improving heating efficiency and user comfort. Both cold and hot air are directed forwards along a third direction (y) away from the rear panel 14.

[0054] Specifically, the volute assembly 2 is entirely within the dashed circle during rotation, which ensures that the volute and volute tongue structure will not interfere with the shell. The center of the dashed trajectory circle is the center of the cross-flow fan blade, and the radius is the length from the center to the farthest point of the volute upper cover plate. Obviously, the farthest point of the volute upper cover plate is always spaced apart from the bottom plate 12 and the front plate 13.

[0055] Optionally, the first limiting air guide assembly 31 can be disposed inside the front plate 13 or on other inner walls of the housing 1; the second limiting air guide assembly 32 can be disposed inside the bottom plate 12 or on other inner walls of the housing 1. Optionally, the limiting and air guiding functions of the first limiting air guide assembly 31 or the second limiting air guide assembly 32 can be integrated or implemented by multiple components working together. Optionally, the first limiting air guide assembly 31 or the second limiting air guide assembly 32 may include rotating components or telescopic components, etc.

[0056] Optionally, the top plate 11, bottom plate 12, front plate 13, and rear plate 14 may each include straight plates, curved plates, combinations of straight and curved plates, or other shapes. Optionally, the shapes of the first opening 10, the second opening 20, and the third opening 30 may be rectangular, trapezoidal, elliptical, or any other shape. Optionally, guide vanes may be installed at the first opening 10 and the second opening 20, and air guide grids may be installed at the third opening 30.

[0057] In this embodiment, the indoor unit of the air conditioner is rotatable via the volute assembly 2, enabling it to switch between an upward air outlet in cooling mode and a downward air outlet in heating mode. This allows the cold air to be delivered as far as possible and the hot air to be as close to the ground as possible, thereby optimizing the cooling and heating effects and improving user comfort. By providing a first opening 10 for air outlet in cooling mode on the front plate 13 and a second opening 20 for air outlet in heating mode on the bottom plate 12, the uniformity of the distribution of cold and hot airflow during indoor movement can be increased. By providing air outlets on the front plate 13 and the bottom plate 12 respectively to achieve upward and downward air outlets, it is not necessary to forcibly guide the airflow at the fan outlet to change the airflow direction, which can reduce airflow impact loss and increase the air delivery distance. The first limiting air guide assembly 31 and the second limiting air guide assembly 32 can not only limit the volute assembly 2, but also serve as extensions of the volute and volute tongue.

[0058] In some embodiments, such as Figures 1 to 4 As shown, the first limiting air guide assembly 31 is movably connected to the front plate 13, and / or the second limiting air guide assembly 32 is movably connected to the bottom plate 12.

[0059] This embodiment connects the first limiting air guide component 31 to the front panel 13 and the second limiting air guide component 32 to the bottom plate 12. This shortens the distance between the first limiting air guide component 31 or the second limiting air guide component 32 and the air outlet 21, improves the efficiency of the first limiting air guide component 31 or the second limiting air guide component 32 during the conversion process, reduces the amount of material used in the first limiting air guide component 31 and / or the second limiting air guide component 32, and lowers the production cost of the air conditioner indoor unit.

[0060] In some embodiments, such as Figure 1 and Figure 2 As shown, the volute assembly 2 includes a volute 201 and a volute tongue 202.

[0061] When the indoor unit of the air conditioner is in cooling mode, the first limiting air guide assembly 31 has a first overlapping section with the volute tongue 202 and a second overlapping section with the volute 201, and / or when the indoor unit of the air conditioner is in heating mode, the second limiting air guide assembly 32 has a third overlapping section with the volute tongue 202 and a fourth overlapping section with the volute 201.

[0062] Specifically, the overlapping section is located at the end of the volute 201 and the volute tongue 202 near the air outlet 21.

[0063] This embodiment increases the contact area between the limiting air guide component and the volute 201 and volute tongue 202 by forming an overlapping section, thereby improving the limiting stability of the limiting air guide component; it also ensures that the air outlet 21 will not leak air at the contact surface, so that all the air outlet 21 enters the first air guide duct or the second air guide duct, thereby improving the air outlet efficiency of the first opening 10 or the second opening 20.

[0064] In some embodiments, such as Figure 1 and Figure 2 As shown, when the indoor unit of the air conditioner is in cooling mode, the second limiting air guide assembly 32 is configured to close the second opening 20, and / or when the indoor unit of the air conditioner is in heating mode, the first limiting air guide assembly 31 is configured to close the first opening 10.

[0065] Specifically, by closing the second opening 20 with the second limiting air guide component 32 in the cooling mode, air leakage from the second opening 20 can be prevented from causing disordered airflow from the first opening 10; by closing the first opening 10 with the first limiting air guide component 31 in the heating mode, air leakage from the first opening 10 can be prevented from causing disordered airflow from the second opening 20.

[0066] This embodiment uses a limiting air guide component to close the opening where no airflow occurs when the air is not in the limiting state. This can prevent airflow turbulence, improve the overall airflow stability inside the casing 1, and improve the airflow stability of the indoor unit of the air conditioner.

[0067] In some embodiments,

[0068] The first limiting air guide assembly 31 includes a first limiting member 311 and a second limiting member 312. When the volute assembly 2 is in the first position, the first limiting member 311 is configured to restrict the air outlet 21 from rotating toward the direction close to the top plate 11, and the second limiting member 312 is configured to restrict the air outlet 21 from rotating toward the direction close to the bottom plate 12; and / or

[0069] The second limiting air guide assembly 32 includes a third limiting member 323 and a fourth limiting member 324. When the volute assembly 2 is in the second position, the third limiting member 323 is configured to restrict the air outlet 21 from rotating toward the direction close to the front panel 13, and the fourth limiting member 324 is configured to restrict the air outlet 21 from rotating toward the direction away from the front panel 13.

[0070] Specifically, the first limiting member 311 and the second limiting member 312 can be limiting plates or limiting members of other shapes, and the third limiting member 323 and the fourth limiting member 324 can be limiting plates or limiting members of other shapes.

[0071] Optionally, the first limiting member 311, the second limiting member 312, the third limiting member 323 and the fourth limiting member 324 can all switch states by rotation, thereby achieving the limiting and guiding functions, or they can switch states by extension or folding.

[0072] This embodiment achieves the limiting and air guiding of the volute assembly by combining the first limiting member 311 and the second limiting member 312, or by combining the third limiting member 323 and the fourth limiting member 324. This can improve the stability of the volute assembly at the corresponding air outlet position and the flexibility of position fine adjustment, thereby improving the air outlet stability of the indoor unit of the air conditioner and optimizing the cooling and heating effect.

[0073] In some embodiments, such as Figure 1 and Figure 2 As shown, the volute assembly 2 includes a volute 201 and a volute tongue 202. The first limiting member 311 and the third limiting member 323 are configured to limit the volute tongue 202, and the second limiting member 312 and the fourth limiting member 324 are configured to limit the volute 201.

[0074] Specifically, in cooling mode, the volute assembly 2 is in the first position, with the first limiting member 311 abutting against the outer wall of the volute tongue 202 and the second limiting member 312 abutting against the outer wall of the volute 201; in heating mode, the volute assembly 2 is in the second position, with the third limiting member 323 abutting against the outer wall of the volute tongue 202 and the fourth limiting member 324 abutting against the outer wall of the volute 201, the aforementioned outer wall being relative to the air outlet duct between the volute 201 and the volute tongue 202.

[0075] In this embodiment, the first limiting member 311 and the third limiting member 323 limit the volute tongue 202, and the second limiting member 312 and the fourth limiting member 324 limit the volute shell 201, which facilitates the first opening 10 to discharge air upward and forward, and facilitates the second opening 20 to discharge air downward and forward.

[0076] In some embodiments, such as Figure 1 and Figure 2 As shown,

[0077] The first limiting air guide assembly 31 includes a first limiting member 311 and a second limiting member 312. The first limiting member 311 is rotatably disposed on the side of the first opening 10 near the top plate 11, and the second limiting member 312 is rotatably disposed on the side of the first opening 10 near the bottom plate 12; and / or

[0078] The second limiting air guide assembly 32 includes a third limiting member 323 and a fourth limiting member 324. The third limiting member 323 is rotatably disposed on the side of the second opening 20 near the front plate 13, and the fourth limiting member 324 is rotatably disposed on the side of the second opening 20 away from the front plate 13.

[0079] Specifically, when the first opening 10 is a rectangular opening, the rotation axis of the first limiting member 311 coincides with the side of the first opening 10 near the top plate 11, that is, the rotation axis of the first limiting member 311 extends along the second direction x, and the rotation axis of the second limiting member 312 coincides with the side of the first opening 10 near the bottom plate 12, that is, the rotation axis of the second limiting member 312 extends along the second direction x.

[0080] Specifically, when the second opening 20 is a rectangular opening, the rotation axis of the third limiting member 323 coincides with the side of the second opening 20 near the front plate 13, that is, the rotation axis of the third limiting member 323 extends along the second direction x, and the rotation axis of the fourth limiting member 324 coincides with the side of the second opening 20 away from the front plate 13, that is, the rotation axis of the fourth limiting member 324 extends along the second direction x.

[0081] Specifically, when the indoor unit of the air conditioner is in cooling mode, the volute assembly 2 rotates to the first position, the first limiting air guide assembly 31 is in the limiting position and connects the air outlet 21 and the first opening 10. The first limiting member 311 is an extension of the volute tongue 202, the second limiting member 312 is an extension of the volute 201, the second limiting air guide assembly 32 is in the closed position and closes the second opening 20, the third limiting member 323 and the fourth limiting member 324 are both parallel to the base plate 12, the third limiting member 323 and the fourth limiting member 324 cooperate to close the second opening 20, and the length of the third limiting member 323 and the fourth limiting member 324 along the third direction y is not less than the length of the second opening 20 along the third direction y.

[0082] Specifically, when the indoor unit of the air conditioner is in heating mode, the volute assembly 2 rotates to the second position, the second limiting air guide assembly 32 is in the limiting position and connects the air outlet 21 and the second opening 20, the third limiting member 323 is an extension of the volute tongue 202, the fourth limiting member 324 is an extension of the volute 201, the first limiting air guide assembly 31 is in the closed position and closes the first opening 10, the first limiting member 311 and the second limiting member 312 are both parallel to the front plate 13, the first limiting member 311 and the second limiting member 312 cooperate to close the first opening 10, and the length of the first limiting member 311 and the second limiting member 312 along the first direction z is not less than the length of the first opening 10 along the first direction z.

[0083] In this embodiment, each limiting component is rotatably disposed on the side of the first opening 10 or the second opening 20, which facilitates the switching of the first limiting air guide assembly 31 or the second limiting air guide assembly 32 between the limiting position and the closed position, thereby improving the limiting stability, air guiding smoothness, and non-air outlet sealing.

[0084] In some embodiments,

[0085] The first limiting air guide assembly 31 further includes a first driving component and a second driving component, the first driving component being configured to drive the first limiting member 311 to rotate, and the second driving component being configured to drive the second limiting member 312 to rotate; and / or

[0086] The second limiting air guide assembly 32 also includes a third driving component and a fourth driving component. The third driving component is configured to drive the third limiting member 323 to rotate, and the fourth driving component is configured to drive the fourth limiting member 324 to rotate.

[0087] This embodiment improves the flexibility of the limiting air guide assembly's state switching and enhances the smoothness of the limiting component's rotation and the consistency of its position by driving the corresponding limiting component to rotate.

[0088] In some embodiments, at least one of the first drive component, the second drive component, the third drive component, and the fourth drive component includes a position holding mechanism, which is configured to lock the corresponding limit member in a limit position.

[0089] Optionally, the first drive component, the second drive component, the third drive component, and the fourth drive component can be motors, etc., and the position holding mechanism can be a built-in brake of the motor or a built-in gear reduction device, etc.

[0090] This embodiment, by setting a position holding mechanism in the drive component, can lock the limiting component in the limiting position, improve the positional stability of the volute assembly 2 in the working state, thereby improving the air outlet stability in the air-conditioned room and optimizing the cooling and heating effect; the mechanical structure of the position holding mechanism can prevent the drive component from being in the working state at all times, such as preventing the motor from being in the energized state, thereby saving energy consumption and improving the limit safety and reliability.

[0091] In some embodiments, such as Figure 3 and Figure 4 As shown,

[0092] During the rotation of the volute assembly 2 to the second position, the inner surfaces of both the third limiting member 323 and the fourth limiting member 324 form an acute angle with the base plate 12; and / or

[0093] During the rotation of the volute assembly 2 to the first position, the inner side of the first limiting member 311 and the inner side of the second limiting member 312 both form an acute angle with the front plate 13.

[0094] Specifically, the inner surfaces of the third limiting member 323 and the fourth limiting member 324 are the sides facing the inside of the housing when they are in the closed position, and the inner surfaces of the first limiting member 311 and the second limiting member 312 are the sides facing the inside of the housing when they are in the closed position.

[0095] In this embodiment, the third limiting member 323 and the fourth limiting member 324 rotate and open in advance before the volute assembly 2 rotates to the second position, which can smoothly achieve the limiting of the second limiting air guide assembly 32 on the volute assembly 2 and avoid interference between the volute assembly 2 and the limiting member that rotates after it is in the second position; and the first limiting member 311 and the second limiting member 312 rotate and open in advance before the volute assembly 2 rotates to the first position, which can smoothly achieve the limiting of the first limiting air guide assembly 31 on the volute assembly 2 and avoid interference between the volute assembly 2 and the limiting member that rotates after it is in the first position.

[0096] In some embodiments, such as Figures 1 to 4 As shown, the housing 1 also includes a rear plate 14, which is spaced apart from the front plate 13 along a third direction y. The third direction y is perpendicular to the first direction z and the second direction x. The rear plate 14 has a fourth opening 40 on the side near the top plate 11. The fourth opening 40 is used to open to assist the return air when the indoor unit of the air conditioner is in cooling mode, and to close when the indoor unit of the air conditioner is in heating mode.

[0097] Specifically, when the indoor unit of the air conditioner is in cooling mode, the volute 202 will block part of the airflow, thereby reducing the airflow entering the centrifugal fan blades.

[0098] This embodiment provides a fourth opening 40 on the rear panel 14, which can be opened in cooling mode to assist in the return air, increase the return air volume, and improve the cooling effect; the fourth opening 40 is closed in heating mode to avoid affecting the return air entering through the third opening 30 in heating mode, thereby improving the airflow stability inside the housing.

[0099] In some embodiments, such as Figures 1 to 4 As shown, a first guide plate 141 is provided on the rear plate 14. The first guide plate 141 is connected to the side of the fourth opening 40 away from the top plate 11. The first guide plate 141 is arc-shaped and protrudes towards the top plate 11. The first guide plate 141 is configured to guide the return air of the fourth opening 40.

[0100] In this embodiment, the return air entering the fourth opening 40 in the cooling mode is guided by the first guide plate 141, which enables the return air to enter the air inlet 22 of the cross-flow fan more smoothly, improves the air intake effect of the cross-flow fan, and thus improves the cooling effect.

[0101] In some embodiments, the volute assembly 2 is provided with an air inlet 22 and a volute tongue 202, and the indoor unit of the air conditioner further includes:

[0102] Heat exchanger 4 is located between the third opening 30 and the air inlet 22; and

[0103] The second deflector 5 is configured to guide the airflow blocked by the volute tongue 202 into the air inlet 22 when the volute assembly 2 is in the first position.

[0104] Specifically, the heat exchanger 4 includes a first heat exchange section and a second heat exchange section, which are arranged in a V-shape with the V-shaped opening facing the air inlet 22.

[0105] Specifically, when the indoor unit of the air conditioner is in cooling mode, the area near the volute 202 has a faster airflow speed due to its proximity to the cross-flow fan blades. This faster airflow cannot fully enter the air inlet 22 due to the influence of the structure of the volute 202, thus affecting the cooling effect. By setting the second guide plate 5, the air intake can be made smoother, allowing the airflow to fully enter the air inlet 22, thereby improving the cooling effect.

[0106] The second guide plate 5 in this embodiment can make the air intake smoother. The second guide plate 5 and the first guide plate 141 can achieve dual airflow guidance, which can not only supplement the return air volume, but also ensure that the airflow passing through the evaporator in the cooling mode is not blocked by the volute structure, thereby improving the cooling effect.

[0107] In some embodiments, the second guide plate 5 is connected between the first end of the volute tongue 202 near the air inlet 22 and the second end of the volute tongue 202 near the air outlet 21, and the second guide plate 5 is arc-shaped and protrudes toward the top plate 11.

[0108] In this embodiment, the second guide plate 5 guides the airflow in the volute tongue blocking part in the cooling mode, which can make the airflow enter the air inlet 22 more smoothly, thereby improving the cooling effect.

[0109] Secondly, this disclosure proposes an air conditioning unit, including the indoor unit of the above embodiments.

[0110] The air conditioning unit of this embodiment can switch between the upper air outlet state in cooling mode and the lower air outlet state in heating mode. It can deliver cold air as far as possible and hot air as close to the ground as possible, resulting in good cooling and heating effects. The distribution of cold and hot air during indoor movement is highly uniform, and the user comfort is high.

[0111] Furthermore, this disclosure also proposes a control method for an indoor air conditioning unit based on the above embodiments, comprising:

[0112] When the indoor unit of the air conditioner is in cooling mode, the volute assembly 2 is rotated to the first position and the first limiting air guide assembly 31 is in the limiting position, connecting the air outlet 21 and the first opening 10, and the second limiting air guide assembly 32 is in the closed position to close the second opening 20.

[0113] When the indoor unit of the air conditioner is in heating mode, the volute assembly 2 is rotated to the second position and the second limiting air guide assembly 32 is in the limiting position, connecting the air outlet 21 and the second opening 20, and the first limiting air guide assembly 31 is in the closed position to close the first opening 10.

[0114] The control method of this embodiment achieves reliable limiting of the volute assembly 2 through the limiting air guide assembly and ensures smooth airflow from the air outlet 21, thereby optimizing the cooling and heating effect of the indoor unit of the air conditioner. At the same time, another limiting air guide assembly closes the non-airflow opening when it is not limited, which can avoid airflow turbulence and improve the airflow stability of the indoor unit of the air conditioner.

[0115] In some embodiments, the first limiting air guide assembly 31 includes a first limiting member 311 and a second limiting member 312. The first limiting member 311 is rotatably disposed on the side of the first opening 10 near the top plate 11, and the second limiting member 312 is rotatably disposed on the side of the first opening 10 near the bottom plate 12. The second limiting air guide assembly 32 includes a third limiting member 323 and a fourth limiting member 324. The third limiting member 323 is rotatably disposed on the side of the second opening 20 near the front plate 13, and the fourth limiting member 324 is rotatably disposed on the side of the second opening 20 away from the front plate 13. The control method further includes:

[0116] During the process of switching from the self-heating mode to the cooling mode of the indoor unit of the air conditioner, the fourth limiting member 324 rotates from the limiting position toward the free end away from the front plate 13.

[0117] Rotate the volute assembly 2 toward the air outlet 21 in a direction away from the front panel 13;

[0118] The third limiting member 323 rotates from the limiting position to the closed position;

[0119] Rotate the volute assembly 2 toward the direction closer to the first position;

[0120] Rotate the fourth limiting member 324 to the closed position.

[0121] Specifically, during the switching process of the volute assembly 2 to cooling mode, the fourth limiting member 324 first rotates to the left by a certain angle, for example, angle 'a' within the range of 45° to 50°. At this time, after the cross-flow volute and volute tongue rotate to the left, space is left for the third limiting member 323 to rotate to the left. Subsequently, the third limiting member 323 rotates to the left to the closed position, allowing the volute assembly 2 to rotate smoothly to the right. The fourth limiting member 324 then rotates to the right to the closed position, thereby achieving the closure of the second opening 20 by the second limiting air guide assembly 32. Correspondingly, the same control principle exists during the switching process of the volute assembly 2 to heating mode, which will not be elaborated here.

[0122] This embodiment provides space for the rotation of the volute assembly 2 by having two limiting members of the limiting air guide assembly and the volute assembly 2 rotate in an orderly manner, thereby avoiding interference between the volute assembly 2 and the limiting air guide assembly during rotation and improving the smoothness and safety of the operation of the indoor unit of the air conditioner.

[0123] In some embodiments, the control method further includes:

[0124] During the process of switching from the self-heating mode to the cooling mode of the indoor unit of the air conditioner, the first limiting member 311 rotates from the closed position toward the free end away from the base plate 12.

[0125] The second limiting member 312 rotates from its closed position toward the free end near the base plate 12;

[0126] Rotate the volute assembly 2 to the first position;

[0127] Rotate the second limiting member 312 to the limiting position;

[0128] The first limiting member 311 is rotated to the limiting position.

[0129] Specifically, during the switching process of the volute assembly 2 to cooling mode, the first limiting member 311 and the second limiting member 312 need to be rotated by a certain angle in advance. Otherwise, when the cross-flow volute and the volute tongue rotate to the upper air outlet position, the first limiting member 311 and the second limiting member 312 will not be able to rotate open, and will not achieve the intended limiting effect. The first limiting member 311 can rotate to the right by a certain angle after the vertical opening position, for example, angle b with a value range of 15° to 20°. The second limiting member 312 can rotate to the left by a certain angle after the vertical opening position, for example, angle c with a value range of 28° to 34°. Correspondingly, the same control principle exists during the switching process of the volute assembly 2 to heating mode, which will not be elaborated here.

[0130] This embodiment uses the two limiting components of the limiting air guide assembly to rotate and open in advance before the volute assembly 2 is in place. This can prevent the volute assembly 2 from interfering with the limiting components that rotate after it is in place, thereby improving the smoothness and safety of the operation of the indoor unit of the air conditioner.

[0131] The present disclosure provides a detailed description of an indoor air conditioning unit and an air conditioning system. Specific embodiments have been used to illustrate the principles and implementation methods of the present disclosure. These embodiments are merely illustrative and are intended to aid in understanding the method and core concepts of the present disclosure. It should be noted that those skilled in the art can make various improvements and modifications to the present disclosure without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of this disclosure.

Claims

1. An indoor unit for an air conditioner, characterized in that, include: The housing (1) includes a top plate (11), a bottom plate (12) and a front plate (13). The top plate (11) and the bottom plate (12) are arranged at intervals relative to each other along a first direction (z). The front plate (13) is connected between the top plate (11) and the bottom plate (12). The front plate (13) is provided with a first opening (10) for air outlet in cooling mode. The bottom plate (12) is provided with a second opening (20) for air outlet in heating mode. The top plate (11) is provided with a third opening (30) for air return. A cross-flow fan is provided inside the housing (1). The cross-flow fan includes a volute assembly (2). The volute assembly (2) is provided with an air outlet (21). The volute assembly (2) is rotatably switched between a first position and a second position around its central axis so that the indoor unit of the air conditioner switches between the upper air outlet state in the cooling mode and the lower air outlet state in the heating mode. The central axis extends along a second direction (x), which is perpendicular to the first direction (z). and The first limiting air guide assembly (31) and the second limiting air guide assembly (32) are both movably connected to the inner wall of the housing (1). The first limiting air guide assembly (31) is configured to limit the volute assembly (2) to the first position and is configured to form a first air guide duct connecting the air outlet (21) and the first opening (10). The second limiting air guide assembly (32) is configured to limit the volute assembly (2) to the second position and is configured to form a second air guide duct connecting the air outlet (21) and the second opening (20).

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The first limiting air guide assembly (31) is movably connected to the front plate (13), and / or the second limiting air guide assembly (32) is movably connected to the bottom plate (12).

3. The indoor unit of the air conditioner according to claim 1, characterized in that, The volute assembly (2) includes a volute (201) and a volute tongue (202). When the indoor unit of the air conditioner is in cooling mode, the first limiting air guide assembly (31) has a first overlapping section with the volute tongue (202) and a second overlapping section with the volute shell (201), and / or when the indoor unit of the air conditioner is in heating mode, the second limiting air guide assembly (32) has a third overlapping section with the volute tongue (202) and a fourth overlapping section with the volute shell (201).

4. The indoor unit of the air conditioner according to claim 1, characterized in that, When the indoor unit of the air conditioner is in cooling mode, the second limiting air guide assembly (32) is configured to close the second opening (20), and / or when the indoor unit of the air conditioner is in heating mode, the first limiting air guide assembly (31) is configured to close the first opening (10).

5. The indoor unit of the air conditioner according to claim 1, characterized in that, The first limiting air guide assembly (31) includes a first limiting member (311) and a second limiting member (312). When the volute assembly (2) is in the first position, the first limiting member (311) is configured to restrict the air outlet (21) from rotating toward the direction close to the top plate (11), and the second limiting member (312) is configured to restrict the air outlet (21) from rotating toward the direction close to the bottom plate (12); and / or The second limiting air guide assembly (32) includes a third limiting member (323) and a fourth limiting member (324). When the volute assembly (2) is in the second position, the third limiting member (323) is configured to restrict the air outlet (21) from rotating toward the front plate (13), and the fourth limiting member (324) is configured to restrict the air outlet (21) from rotating toward the front plate (13).

6. The indoor unit of the air conditioner according to claim 5, characterized in that, The volute assembly (2) includes a volute (201) and a volute tongue (202), wherein the first limiting member (311) and the third limiting member (323) are configured to limit the volute tongue (202), and the second limiting member (312) and the fourth limiting member (324) are configured to limit the volute (201).

7. The indoor unit of the air conditioner according to claim 1, characterized in that, The first limiting air guide assembly (31) includes a first limiting member (311) and a second limiting member (312). The first limiting member (311) is rotatably disposed on the side of the first opening (10) near the top plate (11), and the second limiting member (312) is rotatably disposed on the side of the first opening (10) near the bottom plate (12); and / or The second limiting air guide assembly (32) includes a third limiting member (323) and a fourth limiting member (324). The third limiting member (323) is rotatably disposed on the side of the second opening (20) near the front plate (13), and the fourth limiting member (324) is rotatably disposed on the side of the second opening (20) away from the front plate (13).

8. The indoor unit of the air conditioner according to claim 7, characterized in that, The first limiting air guide assembly (31) further includes a first driving component and a second driving component, the first driving component being configured to drive the first limiting member (311) to rotate, and the second driving component being configured to drive the second limiting member (312) to rotate; and / or The second limiting air guide assembly (32) further includes a third driving component and a fourth driving component, the third driving component being configured to drive the third limiting member (323) to rotate, and the fourth driving component being configured to drive the fourth limiting member (324) to rotate.

9. The indoor unit of the air conditioner according to claim 8, characterized in that, At least one of the first driving component, the second driving component, the third driving component, and the fourth driving component includes a position holding mechanism, which is configured to lock the corresponding limiting member in a limiting position.

10. The indoor unit of the air conditioner according to claim 7, characterized in that, During the rotation of the volute assembly (2) to the second position, the inner surfaces of the third limiting member (323) and the fourth limiting member (324) both form acute angles with the base plate (12); and / or During the rotation of the volute assembly (2) toward the first position, the inner side of the first limiting member (311) and the inner side of the second limiting member (312) form an acute angle with the front plate (13).

11. The air conditioning indoor unit according to any one of claims 1 to 10, characterized in that, The housing (1) further includes a rear plate (14), which is spaced apart from the front plate (13) along a third direction (y). The third direction (y) is perpendicular to the first direction (z) and the second direction (x). The rear plate (14) has a fourth opening (40) on the side near the top plate (11). The fourth opening (40) is used to open to assist the return air when the indoor unit of the air conditioner is in cooling mode, and to close when the indoor unit of the air conditioner is in heating mode.

12. The indoor unit of the air conditioner according to claim 11, characterized in that, The rear plate (14) is provided with a first guide plate (141), which is connected to the side of the fourth opening (40) away from the top plate (11). The first guide plate (141) is arc-shaped and protrudes towards the top plate (11). The first guide plate (141) is configured to guide the return air of the fourth opening (40).

13. The indoor unit of the air conditioner according to any one of claims 1 to 10, characterized in that, The volute assembly (2) is provided with an air inlet (22) and a volute tongue (202), and the indoor unit of the air conditioner further includes: A heat exchanger (4) is disposed between the third opening (30) and the air inlet (22); and The second deflector (5) is configured to guide the airflow blocked by the volute tongue (202) into the air inlet (22) when the volute assembly (2) is in the first position.

14. The indoor unit of the air conditioner according to claim 13, characterized in that, The second guide plate (5) is connected between the first end of the volute tongue (202) near the air inlet (22) and the second end of the volute tongue (202) near the air outlet (21). The second guide plate (5) is arc-shaped and protrudes toward the top plate (11).

15. An air conditioning unit, characterized in that, Includes the air conditioning indoor unit as described in any one of claims 1 to 14.

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