An air conditioner indoor unit

Abstract

This application relates to the field of household appliance technology and discloses an indoor unit of an air conditioner, including a casing with an air inlet and an air outlet. A receiving cavity is formed within the casing, and a fan assembly is housed within the cavity. The fan assembly is used to exchange heat with indoor air entering through the air inlet and to deliver the heat-exchanged air through the air outlet. The casing includes a front panel with an air outlet; a bottom plate located below the front panel; a bent portion connected to the bottom plate near the front panel and bent into the receiving cavity, the bent portion having a guide surface for guiding the heat-exchanged air towards the air outlet; and a baffle portion located at the bent portion and protruding from the guide surface, the baffle portion for blocking the heat-exchanged air flowing through the guide surface to increase the airflow resistance. This reduces the airflow resistance between the air inlet and outlet, decreases the fan load, and thus reduces vortex phenomena, solving the problem of surge noise during air conditioner operation.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, and more particularly to an indoor unit for an air conditioner. Background Technology

[0002] The field of home appliance technology encompasses a wide range of product categories, including but not limited to refrigerators, washing machines, air conditioners, microwave ovens, dishwashers, and vacuum cleaners. The technological development trends for these products primarily focus on intelligentization, energy conservation and environmental protection, optimized user experience, and the application of new materials. Optimized user experience is achieved through design innovation and functional enhancement to meet consumers' demands for health, convenience, and personalization.

[0003] As a core device for regulating indoor temperature, the operational stability of an air conditioner directly impacts the user experience. The indoor unit achieves heat exchange through circulating airflow, while the filter, acting as the first barrier to airflow, easily accumulates dust and dirt over time, increasing airflow resistance and disrupting the original airflow balance. When the filter is severely clogged, the airflow resistance at the inlet is much higher than at the outlet, forcing the fan to increase its power to maintain airflow. At this point, irregular vortices form behind the filter, generating airflow pulsations at specific frequencies. If this frequency is close to the natural frequency of the duct or fan blades, it can trigger structural resonance, manifesting as periodic "humming" or "snoring" sounds, severely affecting the air conditioner's quietness. Utility Model Content

[0004] This application discloses an indoor air conditioner unit that increases airflow resistance by adding a windbreak to the air outlet of the outer cover, thereby reducing the air resistance at the air inlet relative to the air outlet, reducing the fan load, and thus reducing vortex phenomenon and solving the problem of surge noise during air conditioner operation.

[0005] To achieve the above objectives, this application discloses an indoor air conditioning unit, comprising:

[0006] The housing has an air inlet and an air outlet, and a receiving cavity is formed inside the housing, wherein the receiving cavity contains:

[0007] A fan assembly, which is used to exchange heat with indoor air entering through the air inlet of the casing and to send the heat-exchanged gas out through the air outlet of the casing;

[0008] The housing includes:

[0009] Front panel, the front panel is provided with the air outlet of the housing;

[0010] The base plate is located below the front panel;

[0011] A bending section is connected to one end of the base plate near the front panel and bends into the receiving cavity. The bending section has an air guide surface, which is used to guide the heat exchange gas to the air outlet of the casing.

[0012] A windbreak is provided at the bend and protrudes from the air guide surface. The windbreak is used to block the heat exchange gas flowing through the air guide surface to increase the air outlet resistance.

[0013] This reduces the air resistance at the air inlet compared to the air outlet. Even when the filter is clogged, the air resistance at the air inlet is generally lower than that at the air outlet, reducing the fan load and consequently reducing airflow vortexing at the fan. This reduces airflow pulsation and prevents resonance in the duct or fan blades caused by airflow pulsation, thus solving the problem of surge noise during air conditioner operation and effectively reducing the operating noise of the indoor unit. Furthermore, the reduced fan load leads to lower overall power consumption, aligning with energy-saving and environmentally friendly design trends.

[0014] As an optional implementation, the windbreak includes a protruding structure disposed on the air guide surface, and the length of the protruding structure is adapted to the length of the air guide surface along the width direction of the indoor unit of the air conditioner.

[0015] Thus, when the length of the windbreak section is the same as the length of the bend section, the airflow resistance is balanced along the width of the indoor unit. This prevents the heat exchange gas from experiencing velocity differences due to sudden changes in local resistance as it flows through the air guide surface to the air outlet, thereby avoiding airflow turbulence and disturbances. Stable and uniform airflow not only reduces energy loss but also lowers noise caused by irregular airflow movement, resulting in quieter and more efficient operation.

[0016] As an optional implementation, the vertical distance between the highest point of the protruding structure and the windbreak is 1mm to 10mm.

[0017] When the height of the protruding structure is less than 1mm, its obstruction effect on airflow is weak and cannot significantly increase the outlet air resistance. The baffle needs to increase the outlet air resistance to reduce the relative air resistance at the inlet and reduce the fan load. If the protrusion height is insufficient, the airflow passes through the guide surface almost unimpeded, resulting in an outlet air resistance lower than the inlet air resistance. The fan still needs to operate at a high load to maintain the airflow. This not only fails to eliminate noise problems such as surging, but also increases energy consumption and reduces the operating efficiency of the air conditioner. If the height of the protruding structure exceeds 10mm, on the one hand, excessive air resistance will force the fan to operate under overload, increasing motor wear and shortening the fan's lifespan; on the other hand, insufficient airflow will make it difficult to meet the indoor air circulation and temperature regulation needs, resulting in poor cooling or heating effects and longer waiting time for users to reach the set room temperature. In addition, airflow is prone to turbulence in a high-resistance environment, leading to uneven air delivery and localized uneven heating and cooling, seriously affecting user comfort. When the height of the protruding structure is between 1mm and 10mm, it can effectively increase the air outlet resistance, optimize the air pressure distribution inside the casing, and reduce the fan load, without excessively weakening the air volume.

[0018] As an optional implementation, the windbreak includes a windward surface, which is the side of the windbreak facing the fan assembly, and the angle between the windward surface and the air guide surface is an obtuse angle.

[0019] When the windward side of the windbreak and the guide surface are at right or acute angles, the airflow encounters a significant geometric change as it passes through this area, leading to a sharp increase in wind resistance. This change forces the airflow speed to drop abruptly or even stagnate, severely affecting the airflow performance. By setting the angle to obtuse, the impact angle of the airflow when it contacts the windward side is gentler, avoiding insufficient airflow due to excessive wind resistance.

[0020] Furthermore, if the windward side and the guide side are at right angles or acute angles, the airflow is prone to strong separation as it passes through, leading to vortices. These vortices not only consume the kinetic energy of the airflow and reduce its effectiveness, but also cause strong airflow vibrations, producing harsh noise. An obtuse angle design effectively guides the airflow along the windward side, preventing airflow separation and reducing vortex generation. Stable airflow reduces pressure fluctuations caused by vortices, thereby eliminating abnormal noise caused by vortices, making the air conditioner operate more quietly and smoothly, and improving the user experience.

[0021] As an optional implementation, the windward surface is a horizontal plane.

[0022] In this way, the horizontal windward surface allows airflow to pass through the windbreak area more evenly and stably. When the airflow comes into contact with the horizontal surface, it will not generate local eddies or turbulence due to abrupt changes in surface angle, reducing energy loss caused by airflow collisions and friction. This allows the airflow to flow to the air outlet at an appropriate volume, ensuring the air outlet efficiency and stability of the indoor unit of the air conditioner, while reducing the additional energy consumption caused by airflow turbulence and improving the overall energy efficiency of the unit.

[0023] As an optional implementation, the windbreak is positioned close to the air outlet of the fan assembly along the air outlet direction.

[0024] In this way, placing the wind deflector close to the fan assembly outlet allows for effective intervention of the airflow as soon as it leaves the fan, before it diffuses or forms turbulent flow. At this point, the airflow velocity and direction are relatively concentrated, allowing the wind deflector to more precisely increase the outlet air resistance and guide the airflow along a predetermined path to the windward surface and outlet. Compared to placing it further away from the outlet, this layout avoids the formation of vortices due to free diffusion within the casing, reducing energy loss and allowing the airflow to pass through the bend more efficiently, improving overall airflow efficiency and ensuring the stability and uniformity of the outlet airflow.

[0025] As an optional implementation, the windbreak portion and the bending portion are integrally formed.

[0026] Thus, the unibody molding process, compared to traditional splicing or assembly methods, eliminates the need for additional connectors, simplifying the production process. During injection molding, the windbreak and bending sections can be formed in one step using the same mold, reducing the time and labor costs associated with processing and assembling multiple parts separately. Simultaneously, reducing assembly steps lowers the scrap rate due to insufficient component fit, improving production efficiency, shortening the production cycle, facilitating large-scale industrial production, reducing production costs, and enhancing product market competitiveness.

[0027] As an optional implementation, the side of the windbreak that faces away from the air guide surface is a concave surface.

[0028] Therefore, air conditioner casings are mostly made of plastic injection molding. If the air deflector is solid or has a convex structure, excessive thickness in some areas can lead to uneven shrinkage of the plastic during cooling. The recessed surface design reduces the actual thickness of the convex structure, making the material distribution more uniform. During the injection molding process, the cooling rate of the plastic tends to be uniform, reducing the phenomenon of inconsistent shrinkage (such as surface depressions and deformation) caused by thickness differences. This design reduces the scrap rate in the production process, simplifies post-processing, effectively controls manufacturing costs, and at the same time ensures the feasibility of integral molding of the bending part and the air deflector.

[0029] As an optional implementation, the windbreak includes a flange, which is disposed at the end of the bent portion away from the air outlet of the housing, and the length of the flange is less than the length of the air guide surface along the width direction of the indoor unit of the air conditioner.

[0030] Thus, increasing the flange height enhances the windproof effect on airflow, thereby more effectively increasing the airflow resistance. However, if the flange length is too long, it will excessively obstruct airflow, resulting in a significant decrease in airflow volume. Setting the flange length to be less than the length of the air guide surface retains the wind resistance adjustment advantage brought by the flange height while avoiding the impact on airflow performance due to complete obstruction of airflow.

[0031] As an optional implementation, the windproof portion further includes a reinforcing rib, which is connected between the flange and the bent portion.

[0032] In this way, the reinforcing rib forms a supporting structure between the flange and the bending part, dispersing the airflow impact force on the flange to the bending part and the entire casing structure. This effectively resists bending loads perpendicular to the flange direction and prevents the flange from undergoing plastic deformation or breakage under long-term airflow impact.

[0033] Compared with the prior art, the beneficial effects of this application are:

[0034] The air conditioner indoor unit provided in this application embodiment has a windbreak added to the air guide surface of the bent part of the base plate into the cavity, which increases the air outlet resistance, thereby reducing the air resistance of the air inlet relative to the air outlet, reducing the fan load, and thus reducing the vortex phenomenon and solving the problem of surge noise during air conditioner operation. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of an air conditioner indoor unit disclosed in an embodiment of this application;

[0037] Figure 2 This is another structural schematic diagram of the air conditioner indoor unit disclosed in the embodiments of this application;

[0038] Figure 3 This is a schematic diagram of the structure of the bent portion disclosed in the embodiments of this application;

[0039] Figure 4 for Figure 2 Sectional view at point AA;

[0040] Figure 5 for Figure 4 A magnified view of a section at point C;

[0041] Figure 6 for Figure 2 Sectional view at point BB;

[0042] Figure 7 for Figure 6 A magnified view of a section at point D;

[0043] Figure 8 This is a schematic diagram of a structure in which the windbreak part is a flange, as disclosed in an embodiment of this application.

[0044] Explanation of reference numerals in the attached figures:

[0045] 100-Indoor unit of air conditioner; 1-Casing; 11-Front panel; 12-Base plate; 1a-Air outlet of casing; 1b-Receiving cavity; 13-Bending part; 13a-Air guide surface; 14-Wind deflector; 14a-Wind-facing surface; 141-Protruding structure; 142-Flanged edge; 143-Reinforcing rib; L1-Length of protruding structure; L2-Length of air guide surface; L3-Length of flange; D-Vertical distance between the highest point of the protruding structure and the wind deflector; a-Angle between the wind-facing surface and the air guide surface; X-Width direction of indoor unit of air conditioner; Y-Air outlet direction. Detailed Implementation

[0046] 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 skilled in the art without creative effort are within the scope of protection of this application.

[0047] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0048] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0049] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, 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.

[0050] 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.

[0051] The field of home appliance technology encompasses a wide range of product categories, including but not limited to refrigerators, washing machines, air conditioners, microwave ovens, dishwashers, and vacuum cleaners. The technological development trends for these products primarily focus on intelligentization, energy conservation and environmental protection, optimized user experience, and the application of new materials. Optimized user experience is achieved through design innovation and functional enhancement to meet consumers' demands for health, convenience, and personalization.

[0052] As a core device for regulating indoor temperature, the operational stability of an air conditioner directly impacts the user experience. The indoor unit achieves heat exchange through circulating airflow, while the filter, acting as the first barrier to airflow, easily accumulates dust and dirt over time, increasing airflow resistance and disrupting the original airflow balance. When the filter is severely clogged, the airflow resistance at the inlet is much higher than at the outlet, forcing the fan to increase its power to maintain airflow. At this point, irregular vortices form behind the filter, generating airflow pulsations at specific frequencies. If this frequency is close to the natural frequency of the duct or fan blades, it can trigger structural resonance, manifesting as periodic "humming" or "snoring" sounds, severely affecting the air conditioner's quietness.

[0053] Based on this, this application discloses an indoor air conditioner unit in which a windbreak is added to the air guide surface of the bent portion of the base plate into the cavity, increasing the air outlet resistance, thereby reducing the air resistance of the air inlet relative to the air outlet, reducing the fan load, and thus reducing the vortex phenomenon and solving the problem of surge noise during air conditioner operation.

[0054] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0055] Please see Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of an air conditioner indoor unit 100 disclosed in an embodiment of this application; Figure 2This is another structural schematic diagram of the air conditioner indoor unit 100 disclosed in the embodiments of this application;

[0056] Figure 3 This is a schematic diagram of the structure of the bent portion 13 disclosed in this application embodiment. This application embodiment discloses an air conditioner indoor unit 100. This embodiment takes a wall-mounted air conditioner as an example. The indoor unit is an important component of the wall-mounted air conditioner. The indoor unit performs air conditioning circulation by using an air supply system and a related heat exchange system. This circulation covers a series of processes, including air intake, heat exchange, airflow push, and temperature regulation, thereby providing a suitable temperature and air quality for the indoor space. A strong airflow is generated by the air supply system to draw indoor air into the ducted air conditioner. The intake air then flows through the heat exchange system to absorb heat from the air, achieving a cooling effect, and transfers the heat to the refrigerant through the heat exchange process. The cooled air after heat exchange is pushed back into the indoor space by the air supply system, forming a circulation. Through this circulation process, the temperature of the indoor space is regulated, and the indoor air quality is improved through airflow circulation, providing users with a comfortable and healthy indoor environment. In this embodiment, the indoor unit is mounted on the indoor wall.

[0057] In some embodiments, the indoor unit includes a housing 1, which is provided with a housing 1 air inlet (not shown in the figure) and a housing 1 air outlet 1a, and a receiving cavity 1b is formed inside the housing 1. The housing 1 air inlet is used to guide airflow into the interior of the housing 1, and the housing 1 air outlet 1a is used to guide airflow to the room.

[0058] In some embodiments, the indoor unit 100 of the air conditioner includes a fan assembly (not shown in the figure), which is used to exchange heat with indoor air entering through the air inlet of the casing 1, and to send the heat-exchanged gas out through the air outlet 1a of the casing.

[0059] In some embodiments, the indoor unit 100 of the air conditioner includes a filter screen, which is typically disposed between the fan assembly and the air inlet, arranged parallel to the heat exchanger, or covering the air inlet path, for filtering dust, hair, fibers, etc. in the indoor air.

[0060] In some embodiments, the fan assembly includes a heat exchanger disposed within a housing cavity 1b for exchanging heat with the airflow passing through the air inlet of the casing 1. The heat exchanger is a heat exchanger that utilizes the characteristic that a liquid cryogenic refrigerant easily evaporates under low pressure. By absorbing heat from the medium being cooled, it lowers the temperature of the surrounding air, thereby achieving a cooling effect. The cooled air, after passing through the heat exchanger, is then returned to the room via an air supply system, providing a comfortable indoor environment.

[0061] In some embodiments, the fan assembly includes a fan, which rotates when the motor is powered on, driving the impeller to rotate and forcing indoor air to be drawn in from the air inlet, exchanged with heat in the heat exchanger, and then sent out from the air outlet.

[0062] In some embodiments, the indoor unit 100 of the air conditioner further includes an electric heater, which is disposed within the housing cavity 1b of the casing 1 and located between the heat exchanger and the fan. The heat exchanger portion surrounds the electric heater. The electric heater is used to assist in heating when the indoor unit 100 of the air conditioner is in heating mode, thereby ensuring the heating capacity of the indoor unit to reach the user's required temperature and improve the user's comfort.

[0063] In some embodiments, the fan assembly further includes a duct module, which is disposed within the housing 1 receiving cavity 1b. A duct is formed within the duct module, and the fan is disposed within the duct. The airflow after heat exchange flows within the duct under the action of the fan, and then flows into the room through the housing outlet 1a.

[0064] In some embodiments, the housing 1 includes a front panel 11, on which a housing air outlet 1a is provided.

[0065] In some embodiments, the housing 1 further includes a base plate 12 disposed below the front panel 11 to support the bottom of the entire housing 1.

[0066] In some embodiments, one end of the base plate 12 near the air outlet 1a of the housing is bent into the receiving cavity 1b to form a bent portion 13. The bent portion 13 includes a guide surface 13a inclined toward the air outlet of the fan assembly. The guide surface 13a is used to guide the heat exchanged gas after heat exchange of the fan assembly to flow toward the air outlet 1a of the housing.

[0067] In some embodiments, the housing 1 further includes a windbreak portion 14, which is disposed on the bending portion 13 and protrudes from the air guide surface 13a. The windbreak portion 14 is used to block the heat exchange gas flowing through the air guide surface 13a to increase the air outlet resistance, thereby making the air outlet resistance greater than the air inlet resistance.

[0068] This reduces the air resistance at the air inlet compared to the air outlet. Even when the filter is clogged, the air resistance at the air inlet is generally lower than that at the air outlet, reducing the fan load and consequently reducing airflow vortexing at the fan. This reduces airflow pulsation and prevents resonance in the duct or fan blades caused by airflow pulsation, thus solving the problem of surge noise during air conditioner operation. The operating noise of the indoor unit 100 is effectively reduced. Furthermore, the reduced fan load decreases the overall power consumption of the unit, aligning with energy-saving and environmentally friendly design trends.

[0069] In some embodiments, combined with Figure 3 , Figure 4 and Figure 5 , Figure 4 for Figure 2 Sectional view at point AA. Figure 5 for Figure 4 The enlarged view at point C shows that the windbreak 14 includes a protruding structure 141 disposed on the air guide surface 13a. Along the width direction of the indoor air conditioning unit 100, the length of the protruding structure 141 is adapted to the length of the air guide surface 13a.

[0070] When the length of the baffle 14 is the same as the length of the bend 13, the airflow resistance is balanced along the width of the indoor unit 100. This ensures that the heat exchange gas does not experience velocity differences due to sudden changes in local resistance as it flows through the air guide surface 13a to the air outlet, thus avoiding airflow turbulence and disturbances. Stable and uniform airflow not only reduces energy loss but also lowers noise caused by irregular airflow, resulting in quieter and more efficient operation.

[0071] It should be noted that the protrusion structure 141 can be detachably connected to the bending part 13, or it can be integrally formed with the bending part 13. This embodiment does not limit this.

[0072] In some embodiments, combined with Figure 5 The vertical distance between the highest point of the protruding structure 141 and the windbreak 14 is 1mm to 10mm.

[0073] When the height of the protrusion 141 is less than 1 mm, its obstruction effect on airflow is weak and cannot significantly increase the outlet air resistance. The baffle 14 needs to increase the outlet air resistance to reduce the relative air resistance at the inlet and reduce the fan load. If the protrusion height is insufficient, the airflow passes through the guide surface 13a almost unimpeded, resulting in an outlet air resistance lower than the inlet air resistance. The fan still needs to operate at a high load to maintain the airflow. This not only fails to eliminate noise problems such as surging, but also increases energy consumption and reduces the operating efficiency of the air conditioner.

[0074] If the height of the protruding structure 141 exceeds 10mm, on the one hand, excessive wind resistance will force the fan to operate under overload, increasing motor losses and shortening the fan's lifespan; on the other hand, insufficient airflow will make it difficult to meet the indoor air circulation and temperature regulation needs, resulting in poor cooling or heating effects and extending the time it takes for users to reach the set room temperature. Furthermore, airflow is prone to turbulence in high-resistance environments, leading to uneven air distribution and localized uneven heating or cooling, severely impacting user comfort.

[0075] When the height of the protruding structure 141 is between 1mm and 10mm, it can effectively increase the air outlet resistance, optimize the air pressure distribution inside the casing 1, and reduce the fan load, without excessively weakening the air volume.

[0076] In some embodiments, combined with Figure 5The windbreak 14 includes a windward surface 14a, which is the side of the windbreak 14 facing the fan assembly, and the angle between the windward surface 14a and the air guide surface 13a is an obtuse angle.

[0077] When the windward surface 14a of the windbreak 14 and the air guide surface 13a form a right angle or an acute angle, the airflow will encounter a large geometric change when flowing through this area, resulting in a sharp increase in wind resistance. This change will force the airflow speed to drop sharply or even stagnate, seriously affecting the airflow effect. When set to an obtuse angle, the impact angle of the airflow when it contacts the windward surface 14a is gentler, avoiding the problem of insufficient airflow due to excessive wind resistance.

[0078] Furthermore, if the windward surface 14a and the guide surface 13a are at right angles or acute angles, the airflow is prone to strong separation as it passes through, resulting in vortices. These vortices not only consume the kinetic energy of the airflow and reduce its effectiveness, but also cause strong airflow vibrations, producing harsh noise. The obtuse angle design effectively guides the airflow along the windward surface 14a, preventing airflow separation and reducing vortex generation. Stable airflow reduces pressure fluctuations caused by vortices, thereby eliminating abnormal noise caused by vortices, making the air conditioner operate more quietly and smoothly, and improving the user experience.

[0079] Optionally, the guide surface 13a and the windward surface 14a are smoothly connected, preventing strong separation and turbulence caused by abrupt surface changes when airflow passes through this area. The smooth transition guides the airflow smoothly towards the outlet, reducing frictional losses and energy loss between the airflow and the wall. Compared to connections with sharp edges or steps, a smooth connection ensures sufficient airflow volume and velocity, while reducing noise and turbulence caused by airflow impacting the windward surface 14a.

[0080] In some embodiments, the windward surface 14a is a horizontal plane. A horizontal windward surface 14a allows airflow to pass through the windbreak area 14 more evenly and stably. When the airflow comes into contact with the horizontal plane, it does not generate local eddies or turbulence due to abrupt changes in surface angle, reducing energy loss caused by airflow collisions and friction. This allows the airflow to reach the air outlet at an appropriate volume, ensuring the air outlet efficiency and stability of the indoor unit 100, while reducing additional energy consumption caused by airflow turbulence and improving overall unit energy efficiency.

[0081] In some embodiments, combined with Figure 1 For example, in step 5, the windbreak part 14 is set close to the air outlet of the fan assembly along the air outlet direction Y, where the air outlet direction Y is the tilt direction of the air guide surface 13a.

[0082] By positioning the wind deflector 14 close to the air outlet of the fan assembly, it can effectively intervene in the airflow as soon as it leaves the fan, before it diffuses or forms a turbulent flow pattern. At this time, the airflow velocity and direction are relatively concentrated, allowing the wind deflector 14 to more precisely increase the airflow resistance and guide the airflow along a predetermined path to the wind guide surface 13a and the air outlet. Compared to positioning it further away from the air outlet, this layout avoids the formation of vortices due to free diffusion of the airflow within the casing 1, reducing energy loss and allowing the airflow to pass through the bend 13 more efficiently, improving the overall airflow efficiency and ensuring the stability and uniformity of the airflow.

[0083] In some embodiments, the windbreak portion 14 and the bending portion 13 are integrally formed.

[0084] Compared to traditional splicing or assembly methods, unibody molding eliminates the need for additional connectors, simplifying the production process. During injection molding, the windshield 14 and the bending part 13 can be formed in one step using the same mold, reducing the time and labor costs associated with processing and assembling multiple parts separately. Simultaneously, reducing assembly steps lowers the scrap rate due to insufficient component fit, improves production efficiency, shortens the production cycle, facilitates large-scale industrial production, reduces production costs, and enhances product market competitiveness.

[0085] Furthermore, the one-piece molding creates a continuous, seamless structure between the wind deflector 14 and the bending portion 13, avoiding weak points caused by stress concentration at the joints. This reduces the risk of localized deformation or breakage due to airflow impact during air conditioning operation. Compared to modular assembly structures, one-piece molding maintains structural integrity better over long-term use, improving the durability of the indoor unit 100, reducing maintenance costs due to structural damage, and extending product lifespan. Moreover, it ensures a seamless connection between the wind deflector 14 and the bending portion 13, effectively preventing airflow leakage and ensuring that the heat exchange gas flows from the air guide surface 13a to the air outlet along the designed path.

[0086] In some embodiments, combined with Figure 5 The side of the windproof part 14 away from the air guide surface 13a is a concave surface, and the shape of the concave surface matches the shape of the convex surface of the convex structure 141.

[0087] Air conditioner housing 1 is mostly made of plastic injection molding. If the windshield 14 is solid or has an outward convex structure, excessive local thickness can easily lead to uneven plastic cooling and shrinkage. The recessed surface design reduces the actual thickness of the protruding structure 141, making the material distribution more uniform. During the injection molding process, the cooling rate of the plastic tends to be uniform, reducing the phenomenon of inconsistent shrinkage (such as surface depressions and deformation) caused by thickness differences. This design reduces the scrap rate in the production process, simplifies post-processing, effectively controls manufacturing costs, and at the same time ensures the feasibility of integral molding of the bending part 13 and the windshield 14.

[0088] In some embodiments, combined with Figures 6 to 8 , Figure 6 for Figure 2 Sectional view at point BB. Figure 7 for Figure 6 A magnified view of a section at point D. Figure 8 This is a schematic diagram of the structure of the windbreak 14 disclosed in the embodiment of this application, which is a flange 142. The windbreak 14 includes a flange 142, which is disposed at the end of the bent portion 13 away from the air outlet 1a of the housing. The vertical distance between the highest point of the protruding structure 141 and the windbreak 14 is greater than 10mm. Along the width direction of the indoor unit 100 of the air conditioner, the length of the flange 142 is less than the length of the air guide surface 13a.

[0089] Increasing the height of the flange 142 enhances the airflow blocking effect of the windbreak 14, thereby more effectively increasing the airflow resistance. However, if the flange 142 is too long, it will excessively obstruct the airflow, resulting in a significant decrease in the airflow volume. Setting the length of the flange 142 to be less than the length of the air guide surface 13a retains the airflow resistance adjustment advantage brought by the height of the flange 142 while avoiding the impact on the airflow effect due to complete obstruction of the airflow.

[0090] It should be noted that, along the width direction of the indoor unit 100, the flange 142 can be provided in the middle or on both sides of the bent portion 13, and this embodiment does not limit this.

[0091] In some embodiments, combined with Figure 8 The windproof part 14 also includes a reinforcing rib 143, which is connected between the flange 142 and the bending part 13.

[0092] The reinforcing rib 143 forms a support structure between the flange 142 and the bending part 13, dispersing the airflow impact force on the flange 142 to the bending part 13 and the entire housing 1 structure. It can effectively resist the bending load perpendicular to the flange 142 and prevent the flange 142 from undergoing plastic deformation or breakage under long-term airflow impact.

[0093] Optionally, the reinforcing rib 143 includes multiple ribs, which are equally spaced along the width direction of the air conditioner to further enhance the support effect on the flange 142.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An air conditioner indoor unit characterized by comprising: include: The housing has an air inlet and an air outlet, and a receiving cavity is formed inside the housing, wherein the receiving cavity contains: A fan assembly, which is used to exchange heat with indoor air entering through the air inlet of the casing and to send the heat-exchanged gas out through the air outlet of the casing; The housing includes: Front panel, wherein the front panel is provided with the air outlet of the housing; The base plate is located below the front panel; A bending section is connected to one end of the base plate near the front panel and bends into the receiving cavity. The bending section has an air guide surface, which is used to guide the heat exchange gas to the air outlet of the casing. A windbreak is provided at the bend and protrudes from the air guide surface. The windbreak is used to block the heat exchange gas flowing through the air guide surface to increase the air outlet resistance. 2.The indoor unit of the air conditioner according to claim 1, characterized by, The windbreak includes a protruding structure disposed on the air guide surface, and the length of the protruding structure is adapted to the length of the air guide surface along the width direction of the indoor unit of the air conditioner. 3.The indoor unit of the air conditioner according to claim 2, characterized by, The vertical distance between the highest point of the protruding structure and the windbreak is 1mm to 10mm. 4.The indoor unit of the air conditioner according to claim 2, characterized by, The windbreak includes a windward surface, which is the side of the windbreak facing the fan assembly, and the angle between the windward surface and the air guide surface is an obtuse angle. 5.The indoor unit of the air conditioner according to claim 4, characterized in that, The windward side is a horizontal plane. 6.The indoor unit of the air conditioner according to claim 1, characterized by, The windbreak is positioned close to the air outlet of the fan assembly along the air outlet direction.

7. The air conditioner indoor unit according to any one of claims 2-6, characterized by, The windproof part and the bending part are integrally formed. 8.The indoor unit of the air conditioner according to claim 7, characterized by, The side of the windbreak that is away from the air guide surface is a concave surface. 9.The indoor unit of the air conditioner according to claim 1, characterized by, The windbreak includes a flange, which is located at the end of the bent portion away from the air outlet of the casing. Along the width direction of the indoor unit of the air conditioner, the length of the flange is less than the length of the air guide surface.

10. The indoor unit of claim 9, wherein, The windproof portion also includes a reinforcing rib, which is connected between the flange and the bend.

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