Air guide blade, top cover structure, outdoor unit, air conditioner and defrosting method

Abstract

The application relates to the technical field of electrical appliances, and discloses a guide vane, a top cover structure, an outdoor unit, an air conditioner and a defrosting method. The guide vane is arranged on a top cover of an outdoor unit in a radial direction. In the direction from the middle of the top cover to the edge, the guide vane gradually approaches a fan of the outdoor unit, and a convex part for accelerating water drop flow collection is arranged on the side of the guide vane close to the fan. By gradually approaching the fan of the outdoor unit in the direction from the middle of the top cover to the edge, water drops adhering to the guide vane can flow along the guide vane towards the edge. The convex part is arranged on the side of the guide vane close to the fan, the convex part can accelerate water drop flow collection, so that water drops are rapidly collected and dripped at the position of the convex part, and water drops adhering to the guide vane are further prevented. Therefore, water drops on the surface of the guide vane can flow towards the edge or drip downwards, and frost formation on the guide vane and the top cover is prevented, so that the outdoor unit can normally operate.

Description

Technical Field

[0001] This application relates to the field of electrical technology, specifically to a guide vane, a top cover structure, an outdoor unit, an air conditioner, and a defrosting method. Background Technology

[0002] The top-mounted air-discharge outdoor unit's guide vanes (grille blades) are typically straight or curved upwards. This shape of guide vane operates normally at both normal and high temperatures. However, during severe convective weather or when temperatures drop below -5°C, water droplets forming on the guide vane surface adhere to the edges under surface tension. Due to the low temperature and prolonged low-load operation, these droplets gradually freeze into ice particles, and subsequent droplets extend downwards along these ice particles, eventually forming icicles. When these icicles reach the fan blades, the fan will malfunction, and in severe cases, damage the blades. Summary of the Invention

[0003] This application aims to provide a guide vane, a top cover structure, an outdoor unit, an air conditioner, and a defrosting method. By gradually bringing the guide vane closer to the fan from the center of the top cover to the edge, the water droplets formed on the guide vane can be guided. In addition, the protrusions are used to accelerate the flow and collection of water droplets, so that the water droplets can drip or flow away from the edge, preventing water droplets from adhering to the guide vane and frosting, which would prevent the outdoor unit from operating.

[0004] This application provides a guide vane configured to be radially disposed on the top cover of an outdoor unit. From the center of the top cover to the edge, the guide vane gradually approaches the fan of the outdoor unit. Furthermore, the side of the guide vane closest to the fan is provided with a protrusion for accelerating the flow and collection of water droplets.

[0005] In some embodiments, the protrusion is arc-shaped, and the guide vane is constructed with at least two of the protrusions, such that the side of the guide vane facing the fan is wavy.

[0006] In some embodiments, the radius of at least two of the protrusions gradually increases from the center of the top cover to the edge.

[0007] In some embodiments, the guide vane has a first surface close to the fan, wherein the line connecting the higher end and the lower end of the first surface forms an angle a1 with the horizontal plane, satisfying: 5° < a1 < 45°.

[0008] In some embodiments, the guide vane has a second surface away from the fan, the second surface being a convex arc surface, wherein the line connecting the higher end and the lower end of the second surface forms an angle a2 with the horizontal plane, satisfying: 5° < a2 < 30°, and the curvature of the second surface is t1, satisfying: 0.2 < t1 < 0.5.

[0009] In some embodiments, along the width direction of the guide vane, the guide vane has an arc-shaped segment and a bent segment, the bent segment being connected to the lower end of the arc-shaped segment and bending towards the fan.

[0010] In some embodiments, the tangent at the higher end of the arc segment forms an angle b1 with the horizontal plane, satisfying: 30° < b1 < 80°; the tangent at the bend segment forms an angle b2 with the horizontal plane, satisfying: 95° < b2 < 145°; and the curvature of the arc segment is t2, satisfying: 0.3 < t2 < 0.5.

[0011] This application embodiment also provides a top cover structure, including:

[0012] The cover has an air vent.

[0013] As described above, the air guide blades;

[0014] The air guide vanes are installed at the air outlet along the radial direction of the cover.

[0015] In some embodiments, at least two air guide blades are arranged circumferentially within the air outlet, and the at least two air guide blades are connected by annular ribs.

[0016] In some embodiments, the air guide vane and / or the annular rib are provided with a connector, and the connector is connected to a heating unit for heating the air guide vane and / or the annular rib.

[0017] In some embodiments, the heating unit includes:

[0018] A heat-conducting ring, arranged in a disc shape, is connected to the connector.

[0019] An insulated coil is wound around the heat-conducting ring, and the insulated coil is adapted to be electrically connected to a power source.

[0020] In some embodiments, a temperature sensor and / or a humidity sensor are also installed on the cover.

[0021] This application also provides an outdoor unit, including the top cover structure as described above.

[0022] This application also provides an air conditioner, including the outdoor unit as described above.

[0023] This application also provides a defrosting method for an air conditioner, applied to the air conditioner described above, comprising the following steps:

[0024] In response to the fan speed being lower than the preset value, the environmental parameters of the outdoor unit are obtained;

[0025] In response to the environmental parameters meeting the defrost trigger conditions, the top cover of the outdoor unit is defrosted.

[0026] In some embodiments, before obtaining the environmental parameters of the outdoor unit in response to the fan speed being lower than a preset value, the method further includes: determining that the air conditioner is in a low-load operating state.

[0027] In some embodiments, the environmental parameters include temperature and humidity, and the defrosting triggering conditions include a temperature below a first threshold and humidity above a second threshold.

[0028] In some embodiments, defrosting the top cover of the outdoor unit includes:

[0029] Heating the top cover; and / or

[0030] Increase the rotational speed of the fan.

[0031] In some embodiments, heating the top cover includes activating a heating unit disposed on the top cover to heat the top cover.

[0032] In some embodiments, activating the heating unit disposed on the top cover to heat the top cover includes: activating the heating unit disposed on the top cover to heat the top cover and maintaining the heating for a preset time.

[0033] In some embodiments, after defrosting the top cover of the outdoor unit, the method further includes:

[0034] After the preset defrosting time has elapsed, defrosting will stop.

[0035] The air guide vanes, top cover structure, outdoor unit, air conditioner, and defrosting method provided in this application embodiment, by gradually bringing the air guide vanes closer to the fan of the outdoor unit from the center to the edge of the top cover, allow water droplets adhering to the air guide vanes to flow along the air guide vanes towards the edge. Furthermore, a protrusion is constructed on the side of the air guide vanes closest to the fan; this protrusion accelerates the flow and collection of water droplets, causing them to quickly gather and drip off at the protrusion, further preventing water droplets from adhering to the air guide vanes. Thus, water droplets on the surface of the air guide vanes can flow towards the edge or drip downwards, preventing frost buildup on the air guide vanes and top cover that could cause the outdoor unit to malfunction. Attached Figure Description

[0036] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0037] Figure 1 This is an exploded structural diagram of the top cover structure provided in an embodiment of this application.

[0038] Figure 2 This is one of the structural schematic diagrams of the cover provided in the embodiments of this application.

[0039] Figure 3 This is a second schematic diagram of the structure of the cover provided in an embodiment of this application.

[0040] Figure 4 This is a top view of the cover provided in an embodiment of this application.

[0041] Figure 5 for Figure 4 A sectional view of section AA in the middle.

[0042] Figure 6 for Figure 5 A magnified view of a section at point I.

[0043] Figure 7 This is a schematic diagram of the structure of the wind guide blade in the AA section direction provided in the embodiment of this application.

[0044] Figure 8 for Figure 4 A sectional view of section BB in the middle.

[0045] Figure 9 for Figure 8 A magnified view of section II in the middle.

[0046] Figure 10 This is a schematic diagram of the structure of the guide vane in the BB section direction provided in the embodiment of this application.

[0047] Figure 11 This is one of the flowcharts for the defrosting method provided in the embodiments of this application.

[0048] Figure 12 The second flowchart is a defrosting method provided in the embodiments of this application.

[0049] Figure label:

[0050] 10-Guide blade, 110-Protrusion, 120-First surface, 130-Second surface, 140-Arc segment, 150-Bent segment, 20-Cover, 210-Air outlet, 220-Annular rib, 230-Heat-conducting ring, 240-Insulated coil, 30-Temperature sensor, 40-Humidity sensor. Detailed Implementation

[0051] 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 a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0052] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0053] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0054] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0055] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0056] For details, please refer to Figures 1 to 10 This application provides an air guide blade configured to be radially disposed on the top cover of an outdoor unit. The air guide blade 10 gradually approaches the fan of the outdoor unit from the center to the edge of the top cover, and the side of the air guide blade 10 closest to the fan has a protrusion 110 for accelerating the flow and collection of water droplets.

[0057] In this embodiment, by gradually moving the air guide blades 10 closer to the outdoor unit's fan from the center of the top cover to the edge, water droplets adhering to the air guide blades 10 can flow along the air guide blades 10 towards the edge. Furthermore, a protrusion 110 is constructed on the side of the air guide blades 10 closest to the fan. This protrusion 110 accelerates the flow and collection of water droplets, causing them to quickly gather and drip off at the protrusion 110, further preventing water droplets from adhering to the air guide blades 10. Thus, water droplets on the surface of the air guide blades 10 can flow towards the edge or drip downwards, preventing frost buildup on the air guide blades 10 and the top cover, which could lead to the outdoor unit malfunctioning.

[0058] In a top-discharge outdoor unit, the top cover is located at the top of the unit, and the fan is located inside. Therefore, the guide vanes 10 are positioned above the fan. Consequently, the guide vanes 10 gradually slope downwards from the center of the top cover towards the edge.

[0059] For example, the air guide vane 10 is an inclined plate shape, and a protrusion 110 is formed on the lower surface of the air guide vane 10. Water droplets on the upper surface of the air guide vane 10 can gradually flow along the upper surface of the air guide vane 10 towards the edge of the top cover and be discharged through the drainage mechanism at the edge of the top cover. Water droplets on the lower surface of the air guide vane 10 can flow along the lower surface of the air guide vane 10, quickly collect at the protrusion 110, and drip down. This prevents frost from forming on the air guide vane 10 and the top cover, which could cause the outdoor unit to malfunction.

[0060] For example, the air guide blade 10 can be configured as an arc-shaped structure, with the arc-shaped air guide blade 10 curving downwards from the center of the top cover to the edge, and a protrusion 110 constructed on the lower surface of the air guide blade 10. In this case, water droplets on the upper surface of the air guide blade 10 can gradually flow along the arc-shaped upper surface of the air guide blade 10 towards the edge of the top cover and be discharged through the drainage mechanism at the edge of the top cover. Water droplets on the lower surface of the air guide blade 10 can flow along the arc-shaped lower surface of the air guide blade 10, quickly gather at the protrusion 110, and drip down. This prevents frost from forming on the air guide blade 10 and the top cover, which could cause the outdoor unit to malfunction.

[0061] like Figure 3 and Figure 6 As shown, in some embodiments, the protrusion 110 is arc-shaped, and the guide vane 10 is constructed with at least two protrusions 110, making the side of the guide vane 10 facing the fan wavy. By making the lower surface of the guide vane 10 wavy, the adhesion of water droplets to the surface of the guide vane 10 can be reduced, allowing water droplets to flow and collect more quickly at multiple locations on the lower surface of the guide vane 10. This accelerates the flow and collection of water droplets, causing the formed droplets to fall rapidly and evaporate under the action of the fan, thus preventing condensation.

[0062] The arc-shaped protrusion 110 allows water droplets from both sides to converge towards the center of the arc, facilitating the dripping of water droplets from the lower surface of the guide vane 10. Simultaneously, the arc-shaped protrusion 110, in conjunction with the arc-shaped structure of the lower surface of the guide vane 10, allows the water droplets gathered at the protrusion 110 to continue flowing and converging towards the next protrusion 110. When the gravity of the gathered water droplets overcomes the surface tension, the droplets fall downwards and evaporate under the action of the fan and the blades.

[0063] like Figure 6 and Figure 7 As shown, in some embodiments, the radius of the protrusion 110 gradually increases from the center of the top cover to the edge. Thus, the guide vane 10 can form a continuous and gradually changing wavy lower surface. This gradually changing wavy lower surface can further accelerate the flow of water droplets, causing the formed water droplets to fall quickly and evaporate under the action of the fan, thereby preventing condensation.

[0064] Understandably, the lower surface of the guide vane 10 incorporates a continuous and gradually changing wave-like design on top of the curved surface, with the diameter of the wave gradually increasing from the center of the top cover to the edge. Consequently, water droplets can flow towards the edge under the guidance of the curved surface and continuously converge through the protrusions 110. After converging at one protrusion 110, the water droplets can continue to flow downwards along the curved surface and converge again at the next protrusion 110. Multiple convergences at multiple protrusions 110 accelerate the accumulation of water droplets, allowing them to diffuse and drip from high to low along the wave-like lower surface towards the edge, or allowing the water droplets to drip directly downwards at the protrusion 110 after accumulating to a certain extent.

[0065] In other embodiments of this application, the protrusion 110 may also be configured as a triangle, an ellipse or other shape, to ensure that the protrusion 110 can accelerate the flow and collection of water droplets and cause the water droplets to drip at the lower end of the protrusion 110.

[0066] like Figure 6 and Figure 7 As shown, in some embodiments, the guide vane 10 has a first surface 120 near the fan, wherein the line connecting the higher end and the lower end of the first surface 120 forms an angle α1 with the horizontal plane, satisfying: 5° < α1 < 45°. Based on the design of this angle α1, the lower surface of the guide vane 10 is beneficial for the drainage effect of water droplets, so that water droplets attached to the lower surface of the guide vane 10 can diffuse from high to low towards the edge and drip down, or allow water droplets to collect to a certain extent and then drip down directly at the position of the protrusion 110.

[0067] For example, the included angle a1 can be 10°, 15°, 20°, 25°, 30°, 35°, 40°, etc., or any value between 5° and 45°. The specific value of the included angle a1 can be selected based on the model of the outdoor unit to ensure that the air guide blade 10 has a good airflow guiding effect.

[0068] Please continue reading. Figure 6 and Figure 7 The guide vane 10 has a second surface 130 away from the fan. The second surface 130 is a convex arc surface. The line connecting the higher end and the lower end of the second surface 130 forms an angle α2 with the horizontal plane, satisfying: 5° < α2 < 30°. The curvature of the second surface 130 is t1, satisfying: 0.2 < t1 < 0.5. Based on the design of this angle α2 and curvature t1, the upper surface of the guide vane 10 is beneficial for the drainage effect of water droplets, allowing water droplets adhering to the upper surface of the guide vane 10 to diffuse and drip from high to low towards the edge.

[0069] For example, the included angle a2 can be 10°, 15°, 20°, 25°, etc., or any value between 5° and 30°. The specific value of the included angle a2 can be selected based on the model of the outdoor unit to ensure that the air guide blade 10 has a good airflow guiding effect.

[0070] For example, the curvature t1 can be 0.3 or 0.4, or any value between 0.2 and 0.5. The specific value of the curvature t1 can be selected based on the model of the outdoor unit to ensure that the air guide vane 10 has a good airflow guiding effect.

[0071] like Figure 9 and Figure 10 As shown, in some embodiments, along the width direction of the guide vane 10, the guide vane 10 has an arc-shaped section 140 and a bent section 150. The bent section 150 is connected to the lower end of the arc-shaped section 140, and the bent section 150 bends towards the fan. The arc-shaped section 140 allows water droplets to flow downwards and collect at the location of the bent section 150, where they then drip down. The arc-shaped section 140 facilitates the use of gravity to overcome the friction on the surface of the guide vane 10, making it more difficult for water droplets to adhere to the surface of the bent section 150, thus facilitating the dripping and removal of water. The reverse bending design of the bent section 150 allows water droplets to drip along its tangential direction at the bend, preventing water droplets from accumulating at the bottom due to surface tension.

[0072] The structure based on the arc-shaped section 140 and the bent section 150 allows water droplets to quickly collect at the bottom edge. Combined with the wavy lower surface of the guide vane 10, this enables water droplets to collect rapidly, facilitating the diversion of water droplets to the edge of the top cover or allowing the water droplets to drip directly.

[0073] In some embodiments, the bent section 150 is integrally formed on the arc section 140, and the bent section 150 and the arc section 140 are connected to form a generally J-shaped structure, which facilitates drainage.

[0074] Please continue reading. Figure 10 The tangent at the higher end of the arc segment 140 forms an angle b1 with the horizontal plane, satisfying: 30° < b1 < 80°. The tangent at the bend segment 150 forms an angle b2 with the horizontal plane, satisfying: 95° < b2 < 145°. The curvature of the arc segment 140 is t2, satisfying: 0.3 < t2 < 0.5. Based on the design of these angles b1 and b2 and the curvature t2, the surface of the guide vane 10 in the width direction is beneficial for the drainage effect on water droplets, allowing water droplets adhering to the surface of the guide vane 10 to diffuse and drip from high to low towards the edge.

[0075] For example, the included angle b1 can be 40°, 50°, 60°, 70°, etc., or any value between 30° and 80°. The specific value of the included angle b1 can be selected based on the model of the outdoor unit to ensure that the air guide blade 10 has a good airflow guiding effect.

[0076] For example, the included angle b2 can be 100°, 110°, 120°, 130°, 140°, etc., or any value between 95° and 145°. The specific value of the included angle b2 can be selected based on the model of the outdoor unit to ensure that the air guide blade 10 has a good airflow guiding effect.

[0077] For example, the curvature t2 can be 0.35, 0.4, 0.45, or any value between 0.3 and 0.5. The specific value of the curvature t2 can be selected based on the model of the outdoor unit to ensure that the air guide vane 10 has a good airflow guiding effect.

[0078] This application also provides a top cover structure for use in the outdoor unit of an air conditioner. The top cover structure includes a cover body 20 and the air guide vanes 10 described in the previous embodiments. The cover body 20 has an air outlet 210. The air guide vanes 10 are radially mounted on the air outlet 210 along the cover body 20.

[0079] In this embodiment, by gradually moving the air guide blades 10 closer to the outdoor unit's fan from the center of the top cover to the edge, water droplets adhering to the air guide blades 10 can flow along the air guide blades 10 towards the edge. Furthermore, a protrusion 110 is constructed on the side of the air guide blades 10 closest to the fan. This protrusion 110 accelerates the flow and collection of water droplets, causing them to quickly gather and drip off at the protrusion 110, further preventing water droplets from adhering to the air guide blades 10. Thus, water droplets on the surface of the air guide blades 10 can flow towards the edge or drip downwards, preventing frost buildup on the air guide blades 10 and the top cover, which could lead to the outdoor unit malfunctioning.

[0080] Among them, such as Figure 1 and Figure 2 As shown, the cover 20 is usually designed as an annular shape to accommodate the rotation of the fan blades.

[0081] Based on the radially installed guide vanes 10, water droplets generated at the center of the cover 20 can flow along the guide vanes 10 to the edge of the cover 20 to prevent frost formation from affecting the normal operation of the fan.

[0082] like Figure 1 and Figure 3 As shown, at least two air guide blades 10 are arranged at intervals along the circumference inside the air outlet 210, and the at least two air guide blades 10 are connected by annular ribs 220.

[0083] At least two guide vanes 10 spaced circumferentially can guide water droplets at multiple locations, and together with the annular ribs 220, the top cover structure has good structural strength.

[0084] The annular ribs 220 can be configured as multiple rings, and the air outlets 210 are arranged at radial intervals. Each annular rib 220 has a different diameter.

[0085] like Figure 2 and Figure 3 As shown, in some embodiments, the air guide vane 10 and / or the annular rib 220 are equipped with a connector, which is connected to a heating unit for heating the air guide vane 10 and / or the annular rib 220. Based on the design of the heating unit, when frost occurs or the critical point for frost regulation is approaching, the air guide vane 10 and / or the annular rib 220 can be heated by the heating unit to raise the ambient temperature and prevent water droplets from condensing into ice particles.

[0086] For example, if the connector can be a snap-fit, the heating unit can be directly snapped onto the snap-fit.

[0087] For example, the connector can be a connecting block, and the heating unit can be mounted to the connecting block using fasteners.

[0088] For example, the connector can be a cable tie or other binding material, in which case the heating unit is directly bound to the air guide vane 10 and / or the annular rib 220.

[0089] For example, multiple connectors can be installed at intervals on the annular rib 220, and the heating unit can be installed on the annular rib 220 through multiple connectors.

[0090] For example, connectors can be constructed on at least two air guide vanes 10, and the heating unit can be mounted on the air guide vanes 10 through multiple connectors.

[0091] Please see Figure 1 The heating unit includes a heat-conducting ring 230 and an insulated coil 240. The heat-conducting ring 230 is arranged in a disc shape and is connected to a connector. The insulated coil 240 is wound around the heat-conducting ring 230 and is adapted to be electrically connected to a power source.

[0092] When the power supply supplies power to the insulated coil 240, the current passing through the insulated coil 240 will generate eddy currents on the surface of the heat-conducting ring 230, causing the heat-conducting ring 230 to heat up, thereby achieving the effect of defrosting and de-icing.

[0093] The heat-conducting ring 230 is made of a thermally conductive metal material, such as copper, copper-aluminum, or stainless steel. The disc-shaped heat-conducting ring 230 has metallic elasticity, allowing it to adapt to the design requirements of covers 20 with varying curvatures. This allows the heat-conducting ring 230 to be installed on various types of covers 20 through its own stretching or compression. The heat-conducting ring 230 can be connected to the air guide vane 10 and / or the annular rib 220 via snap-fit ​​connections.

[0094] The insulated coil 240 can be made of silicone. The insulated coil 240 is continuously wound around the surface of the heat-conducting ring 230 along the extension direction of the heat-conducting ring 230, thereby generating eddy currents on the surface of the heat-conducting ring 230 under the action of current, so as to make the heat-conducting ring 230 heat up.

[0095] In some embodiments, a temperature sensor 30 and / or a humidity sensor 40 are also installed on the cover 20 to detect the ambient temperature and / or humidity of the outdoor unit, so as to determine whether the heating unit needs to be activated based on the ambient temperature and / or humidity. The temperature sensor 30 and / or humidity sensor 40 need only be able to detect the ambient temperature and / or humidity; there are no restrictions on their models.

[0096] In some embodiments, the air guide vane 10, the cover 20, and the annular rib 220 can all be made of a hydrophobic material. Alternatively, a hydrophobic material layer can be coated on the outer surface of the air guide vane 10, the cover 20, and the annular rib 220. This allows water droplets to flow quickly along the air guide vane 10, facilitating water droplet discharge.

[0097] For example, if only the temperature sensor 30 is installed on the cover 20, then the decision on whether to start the heating unit can be based solely on the ambient temperature parameter.

[0098] For example, if only a humidity sensor 40 is installed on the cover 20, the decision on whether to start the heating unit can be based solely on the ambient humidity parameter.

[0099] For example, by installing a temperature sensor 30 and a humidity sensor 40 on the cover 20, it is possible to determine whether the heating unit needs to be activated based on the coordinated operation of ambient temperature and humidity parameters.

[0100] Understandably, the air conditioner has a central control system. Based on the ambient temperature and humidity parameters fed back by the temperature sensor 30 and the humidity sensor 40, the central control system can send a start signal to the heating unit, causing the heating unit to heat the guide vanes 10 and / or the annular ribs 220.

[0101] The temperature sensor 30 and humidity sensor 40 can be fixedly installed on the air guide blade 10 and / or the annular rib 220 by means of clips, fasteners, magnetic components, adhesive components, etc.

[0102] This application also provides an outdoor unit, including the top cover structure as described in the foregoing embodiments.

[0103] In this embodiment, by gradually moving the air guide blades 10 closer to the outdoor unit's fan from the center of the top cover to the edge, water droplets adhering to the air guide blades 10 can flow along the air guide blades 10 towards the edge. Furthermore, a protrusion 110 is constructed on the side of the air guide blades 10 closest to the fan. This protrusion 110 accelerates the flow and collection of water droplets, causing them to quickly gather and drip off at the protrusion 110, further preventing water droplets from adhering to the air guide blades 10. Thus, water droplets on the surface of the air guide blades 10 can flow towards the edge or drip downwards, preventing frost buildup on the air guide blades 10 and the top cover, which could lead to the outdoor unit malfunctioning.

[0104] This application also provides an air conditioner, including the outdoor unit as described in the foregoing embodiments.

[0105] In this embodiment, by gradually moving the air guide blades 10 closer to the outdoor unit's fan from the center of the top cover to the edge, water droplets adhering to the air guide blades 10 can flow along the air guide blades 10 towards the edge. Furthermore, a protrusion 110 is constructed on the side of the air guide blades 10 closest to the fan. This protrusion 110 accelerates the flow and collection of water droplets, causing them to quickly gather and drip off at the protrusion 110, further preventing water droplets from adhering to the air guide blades 10. Thus, water droplets on the surface of the air guide blades 10 can flow towards the edge or drip downwards, preventing frost buildup on the air guide blades 10 and the top cover, which could lead to the outdoor unit malfunctioning.

[0106] like Figure 11 As shown in the illustration, this application also provides an air conditioner defrosting method, applied to the air conditioner in the foregoing embodiments, comprising the following steps:

[0107] S110: In response to the fan speed being lower than the preset value, obtain the environmental parameters of the outdoor unit.

[0108] S120: In response to environmental parameters meeting the defrost trigger conditions, defrost the top cover of the outdoor unit.

[0109] If the fan speed is lower than the preset value, frost may form on the top cover of the outdoor unit. Therefore, the environmental parameters of the outdoor unit under this condition are obtained. When the environmental parameters meet the defrosting trigger conditions, the top cover of the outdoor unit is defrosted to prevent icicles from forming on the top cover and affecting the normal operation of the outdoor unit.

[0110] Understandably, when the fan speed is high, water droplets adhering to the surface of the guide vanes 10 can be blown away or evaporated by the vanes, thus preventing frost formation. Therefore, when the fan speed is below the preset value, the system determines whether to defrost based on the subsequent response process, preventing the heating unit from being activated when the speed is above the preset value, thus avoiding energy waste.

[0111] In some embodiments, before obtaining the environmental parameters of the outdoor unit when the fan speed is lower than a preset value, the method further includes: determining that the air conditioner is in a low-load operating state.

[0112] It's understandable that when an air conditioner is operating under high load, the fan speed is higher, and frost won't form on the outdoor unit's top cover. Therefore, before determining if the fan speed is lower than the preset value, first ensure the air conditioner is operating under low load. This reduces the need to judge the fan speed under high load conditions and prevents energy waste caused by activating the heating unit under high load.

[0113] In some embodiments, environmental parameters include temperature and humidity. Defrosting triggering conditions include: temperature below a first threshold and humidity above a second threshold.

[0114] It is understandable that when the temperature is low and the humidity is high, frost is likely to form on the top cover of the outdoor unit. Therefore, when the temperature of the outdoor unit's environment is low and the humidity is high, the defrosting conditions are triggered to defrost the top cover or prevent frost from forming on it.

[0115] When the temperature and humidity do not meet the conditions for frosting, the water droplets adhering to the surface of the air guide vane 10 can be guided along the air guide vane 10 to the edge or drip from the protrusion 110 of the air guide vane 10, thus preventing the problem of frosting. Therefore, defrosting is only performed when both the temperature and humidity meet the defrosting trigger conditions, preventing the heating unit from being turned on when the ambient temperature is high or the ambient humidity is low, thus avoiding energy waste.

[0116] The first threshold and the second threshold can be selected based on the size of the top cover and the model of the air conditioner.

[0117] In some embodiments, the step of defrosting the top cover of the outdoor unit includes: heating the top cover; and / or increasing the fan speed.

[0118] It is understandable that heating the top cover can defrost and melt ice, thus achieving defrosting. Increasing the fan speed can accelerate airflow and speed up the evaporation of frost, also achieving a defrosting effect. In this embodiment, it is preferable to increase the fan speed while heating the top cover.

[0119] In some embodiments, the step of heating the top cover includes: activating a heating unit disposed on the top cover to heat the top cover. That is, power is supplied to the insulated coil 240 by a power source. When current passes through the insulated coil 240, eddy currents are generated on the surface of the heat-conducting ring 230, causing the heat-conducting ring 230 to heat up, thereby achieving the effect of defrosting and de-icing.

[0120] In some embodiments, the step of activating a heating unit disposed on the top cover to heat the top cover includes: activating the heating unit disposed on the top cover to heat the top cover and maintaining the heating for a preset time. Maintaining the heating for the preset time ensures effective defrosting and prevents incomplete defrosting.

[0121] The preset duration can be selected based on the size of the top cover and the model of the air conditioner.

[0122] In some embodiments, after defrosting the top cover of the outdoor unit, the method further includes: stopping defrosting after a preset defrosting duration.

[0123] Based on the above defrosting method, it can achieve the effect of defrosting and de-icing. Combined with the shape of the air guide blade 10, it can quickly guide water droplets to the edge, or make water droplets fall and be blown away and evaporated by the air guide blade.

[0124] like Figure 12 As shown, the defrosting process is roughly as follows: The operating status of the air conditioner is determined. When the air conditioner is operating under high load, it maintains normal operation. When the air conditioner is operating under low load, the fan speed signal is detected to obtain the fan speed parameters. When the speed parameters are greater than or equal to a preset value, the air conditioner maintains normal operation. When the speed parameters are less than the preset value, the environmental parameters of the outdoor unit are obtained, and it is determined whether the temperature is lower than a first threshold and whether the humidity is higher than a second threshold. When the ambient temperature is greater than or equal to the first threshold and / or the ambient humidity is less than or equal to the second threshold, the air conditioner maintains normal operation. When the ambient temperature is less than the first threshold and the ambient humidity is greater than the second threshold, the heating unit is activated to heat the air guide vanes 10 and / or the annular ribs 220, maintaining the heating for a preset duration, while simultaneously increasing the fan speed. Heating the air guide vanes 10 and / or the annular ribs 220 achieves the effect of defrosting and de-icing, causing the frost or ice to melt into water droplets and flow along the air guide vanes 10 to the edge, or causing the water droplets to drip from the protrusions 110 of the air guide vanes 10. Simultaneously, the high-speed rotation of the fan causes water droplets and / or water beads to evaporate rapidly. After defrosting is completed within the preset time, the heating unit is turned off to stop heating, and the fan is returned to its original speed, ending the defrosting process. This completes one round of defrosting.

[0125] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0126] The foregoing has provided a detailed description of the air guide vane, top cover structure, outdoor unit, air conditioner, and defrosting method provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. 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 of the technical features. These 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. A guide vane, configured radially on the top cover of an outdoor unit, characterized in that, From the center of the top cover to the edge, the air guide blades gradually approach the fan of the outdoor unit, and the side of the air guide blades near the fan is provided with a protrusion for accelerating the flow and collection of water droplets; the protrusion is set in an arc shape, and the air guide blades are provided with at least two of the protrusions, so that the side of the air guide blades facing the fan is wavy, and the radius of at least two of the protrusions gradually increases from the center of the top cover to the edge.

2. The wind guide blade as described in claim 1, characterized in that, The guide vane has a first surface close to the fan, wherein the line connecting the higher end and the lower end of the first surface forms an angle a1 with the horizontal plane, satisfying: 5° < a1 < 45°.

3. The wind guide blade as described in claim 1, characterized in that, The guide vane has a second surface away from the fan. The second surface is a convex arc surface. The line connecting the higher end and the lower end of the second surface forms an angle a2 with the horizontal plane, satisfying: 5° < a2 < 30°. The curvature of the second surface is t1, satisfying: 0.2 < t1 < 0.

5.

4. The wind guide blade as described in any one of claims 1-3, characterized in that, Along the width direction of the guide vane, the guide vane has an arc-shaped section and a bent section, the bent section is connected to the lower end of the arc-shaped section, and the bent section bends toward the fan.

5. The wind guide blade as described in claim 4, characterized in that, The tangent at the higher end of the arc segment forms an angle b1 with the horizontal plane, satisfying: 30° < b1 < 80°; the tangent at the bend segment forms an angle b2 with the horizontal plane, satisfying: 95° < b2 < 145°; and the curvature of the arc segment is t2, satisfying: 0.3 < t2 < 0.

5.

6. A top cover structure, characterized in that, include: The cover has an air vent. The wind guide blade as described in any one of claims 1-5; The air guide vanes are installed at the air outlet along the radial direction of the cover.

7. The top cover structure as described in claim 6, characterized in that, At least two air guide blades are arranged circumferentially inside the air outlet, and the at least two air guide blades are connected by annular ribs.

8. The top cover structure as described in claim 7, characterized in that, The air guide blade and / or the annular rib are provided with a connector, and the connector is connected to a heating unit for heating the air guide blade and / or the annular rib.

9. The top cover structure as described in claim 8, characterized in that, The heating unit includes: A heat-conducting ring, arranged in a disc shape, is connected to the connector. An insulated coil is wound around the heat-conducting ring, and the insulated coil is adapted to be electrically connected to a power source.

10. The top cover structure as described in any one of claims 6-9, characterized in that, The cover is also equipped with a temperature sensor and / or a humidity sensor.

11. An outdoor unit, characterized in that, Includes the top cover structure as described in any one of claims 6-10.

12. An air conditioner, characterized in that, Including the outdoor unit as described in claim 11.

13. The air conditioner as described in claim 12, characterized in that, The air conditioner is configured to acquire environmental parameters of the outdoor unit in response to the fan speed being lower than a preset value. The air conditioner is also configured to defrost the top cover of the outdoor unit in response to the environmental parameters meeting the defrost trigger condition.

14. The air conditioner as described in claim 13, characterized in that, Before the air conditioner obtains the environmental parameters of the outdoor unit in response to the fan speed being lower than a preset value, the air conditioner is configured to determine that the air conditioner is in a low-load operating state.

15. The air conditioner as described in claim 13, characterized in that, The environmental parameters include temperature and humidity, and the defrosting triggering conditions include a temperature below a first threshold and humidity above a second threshold.

16. The air conditioner as described in claim 13, characterized in that, The defrosting of the top cover of the outdoor unit includes: Heating the top cover; and / or Increase the rotational speed of the fan.

17. The air conditioner as described in claim 16, characterized in that, Heating the top cover includes activating a heating unit mounted on the top cover to heat the top cover.

18. The air conditioner as claimed in claim 17, characterized in that, The step of activating the heating unit mounted on the top cover to heat the top cover includes: activating the heating unit mounted on the top cover to heat the top cover and maintaining the heating for a preset time.

19. The air conditioner as described in claim 18, characterized in that, After defrosting the top cover of the outdoor unit, the air conditioner is configured to stop defrosting after a preset defrosting duration.

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