Air conditioner outdoor unit

Abstract

This application discloses an outdoor unit for an air conditioner, belonging to the technical field of air conditioning. The outdoor unit includes a casing, a heat exchanger, a compressor, a fan, and a fan shroud. The casing includes an air inlet and an air outlet. The compressor, heat exchanger, and fan are located inside the casing, with the fan's outlet side facing the air outlet. The fan shroud is located at the air outlet. The thickness direction of the fan shroud extends from its windward side to its leeward side. The fan shroud includes a first section, a second section, and a third section. The first section is located in the middle of the fan shroud, and the projection point of the fan's center along the thickness direction of the fan shroud is located within the first section. The second section is located on the outer periphery of the first section. The third section is located on the outer periphery of the second section. The third section is located on the outer edge of the fan shroud. By gradually reducing the thickness of the fan shroud in the first, second, and third sections, the requirements of different sections are met, thereby increasing the airflow and reducing the noise level.

Description

Technical Field

[0001] This application belongs to the technical field of air conditioning, and particularly relates to an outdoor unit of an air conditioner. Background Technology

[0002] The fan cover is an important component located at the air outlet of the outdoor unit of the air conditioner. On the one hand, the fan cover can prevent foreign objects (such as leaves, debris, etc.) from entering the outdoor unit, avoiding damage to core components such as fan blades and heat exchangers, and ensuring the safe operation of the equipment. On the other hand, through a specific grid structure design, the airflow exhausted by the fan can be guided, allowing the air to blow out more smoothly, reducing energy loss caused by airflow turbulence, thereby improving the heat dissipation efficiency and overall operating performance of the air conditioner.

[0003] In related technologies, the ribs of the fan shroud are typically designed with uniform thickness (the thickness of the rib is the distance from the windward side to the leeward side). The thickness of the fan shroud ribs affects its performance; thicker ribs obstruct airflow more effectively, reducing airflow efficiency, while thinner ribs have lower strength, reducing the lifespan of the fan shroud. A uniform rib thickness design cannot effectively balance the strength requirements of the fan shroud with the airflow performance requirements. Utility Model Content

[0004] In view of the shortcomings of the related technologies, this application provides an air conditioner outdoor unit that divides the fan cover into sections, so that the fan cover has different thicknesses in different sections, thereby reducing the obstruction effect of the fan cover on the air and making the fan cover have higher strength.

[0005] This application provides an outdoor unit for an air conditioner, comprising:

[0006] The housing includes the housing air inlet and the housing air outlet;

[0007] A compressor, located inside a casing, is used to drive the flow of refrigerant;

[0008] The heat exchanger is located inside the casing, with its windward side facing the air inlet of the casing.

[0009] The fan is located inside the casing, on the leeward side of the heat exchanger, with its outlet facing the air outlet of the casing.

[0010] A fan shroud is located at the air outlet of the casing; the thickness of the fan shroud extends from its windward side to its leeward side; the fan shroud includes:

[0011] The first section is located in the middle part of the fan cover, and the projection point of the center of the fan onto the fan cover along the thickness direction is located in the first section.

[0012] The second partition is located on the outer perimeter of the first partition;

[0013] The third section is located on the outer periphery of the second section; the third section is located on the outer edge of the fan shroud.

[0014] The thickness of the fan shroud gradually decreases in the first, second, and third sections.

[0015] This technical solution effectively balances the strength and airflow performance of the fan cover by differentiating the thickness of the fan cover. The first section, located in the middle of the fan cover, bears greater pressure, and its thicker design ensures the strength of the fan cover. The second and third sections are located away from the center of the fan cover or at the outer edge of the fan cover, so the thickness of the fan cover gradually decreases in the second and third sections. This reduces the obstruction of the fan cover to the airflow, improves the airflow performance of the fan cover, and meets the performance requirements of different areas of the fan cover for the outdoor unit of the air conditioner.

[0016] In some embodiments of this application, the fan cover is set with equal thickness in the first and third partitions, and the thickness of the fan cover in the second partition gradually decreases from the first partition toward the third partition.

[0017] This technical solution makes the thickness of the fan cover uniform in the first and third sections, while designing the thickness of the fan cover to be gradual only in the second section. This not only makes the structure of the fan cover more regular, but also simplifies the production process and reduces manufacturing difficulty and cost while ensuring the strength of the core area and appropriate edge strength. Furthermore, it allows for more precise control of the thickness variation in the second section, thus optimizing airflow performance.

[0018] In some embodiments of this application, the thickness of the fan shroud is reduced in the second partition using any of the linear, exponential, or power functions.

[0019] This technical solution reduces the thickness of the fan cover in the second partition using any of the linear, exponential, or power functions, precisely controlling the thickness change using mathematical functions. It also allows the fan cover to smoothly transition from the second partition to the third partition.

[0020] In some embodiments of this application, the outer diameter of the fan is D, and the radius R1 of the first partition satisfies: R1<αD; α satisfies: α≥0.55, α≤0.65; the value of α is negatively correlated with the outer diameter D of the fan.

[0021] This technical solution limits the radius of the first section based on the outer diameter D of the fan, and makes the value of α negatively correlated with the outer diameter D of the fan, so that the area of ​​the first section is within a reasonable range, avoiding the increase of air resistance of the fan cover due to the area of ​​the first section being too large, and at the same time avoiding the reduction of the overall strength of the fan cover due to the area of ​​the first section being too small.

[0022] In some embodiments of this application, the outer diameter of the fan is D, and the radius R2 of the second partition satisfies: R2≥αD, R2≤βD, α satisfies: α≥0.55, α≤0.65; β satisfies: β≥0.8, α≤0.9; the values ​​of α and β are negatively correlated with the outer diameter D of the fan.

[0023] This technical solution limits the radius of the second zone based on the outer diameter D of the fan, and makes the values ​​of α and β negatively correlated with the outer diameter D of the fan, so that the area of ​​the second zone is within a reasonable range, avoiding the situation where the area of ​​the second zone is too large, causing the area of ​​the first zone to be too small, and at the same time avoiding the situation where the area of ​​the second zone is too small, causing the area of ​​the first zone to be too large.

[0024] In some embodiments of this application, the fan cover includes a first rib and a second rib. The first rib is provided in a plurality of ways and the plurality of first ribs are arranged along the same straight line. The second rib is arranged to intersect with the first rib so that the plurality of first ribs are interconnected through the second rib.

[0025] This technical solution designs the fan cover with a first and second rib that are arranged in a cross pattern. This cross structure enhances the overall stability and strength of the fan cover. The ribs are connected to each other, which disperses the force and improves the ability of the fan cover to resist external deformation. At the same time, it has relatively little obstruction to the airflow.

[0026] In some embodiments of this application, the thickness of the first rib in the first partition is H1, and the thickness of the first rib in the third partition is H2, wherein H2 and H1 satisfy: H2≥0.4H1, H2≤0.7H1.

[0027] This technical solution ensures that the thickness of the first rib in the first and third zones meets the following conditions: H2≥0.4H1, H2≤0.7H1. This guarantees a reasonable ratio of rib strength between the core and edge areas of the fan shroud, meeting the high strength requirements of the core area while avoiding excessively thick ribs in the edge areas that could affect airflow, thus further balancing strength and airflow performance.

[0028] In some embodiments of this application, the side wall of the housing with the housing air outlet is defined by a first plane, the distance from the leeward side of the fan cover to the first plane is the same, and the distance from the windward side of the fan cover to the first plane gradually decreases along the arrangement direction of the first section, the second section and the third section.

[0029] This technical solution optimizes the airflow path into the fan cover by making the distance from the leeward side of the fan cover to the first plane the same, while the distance from the windward side to the first plane gradually decreases along the partition direction. This reduces wind resistance, improves airflow efficiency, and ensures the stability of the fan cover installation.

[0030] In some embodiments of this application, the sidewall of the housing with the housing air outlet is defined by a first plane, the distance from the windward side of the fan cover to the first plane is the same, and the distance from the leeward side of the fan cover to the first plane gradually decreases along the arrangement direction of the first section, the second section and the third section.

[0031] This technical solution makes the distance from the windward side of the fan cover to the first plane the same, while the distance from the leeward side to the first plane gradually decreases along the partition direction, so that the leeward side of the fan cover forms a specific shape. This helps to guide the airflow out smoothly, reduce turbulence, improve the stability and uniformity of the air outlet, and improve the overall performance of the outdoor unit of the air conditioner.

[0032] In addition, this application also provides an outdoor unit for an air conditioner, comprising:

[0033] The housing includes the housing air inlet and the housing air outlet;

[0034] A compressor, located inside a casing, is used to drive the flow of refrigerant;

[0035] The heat exchanger is located inside the casing, with its windward side facing the air inlet of the casing.

[0036] The fan is located inside the casing, on the leeward side of the heat exchanger, with its outlet facing the air outlet of the casing.

[0037] The fan cover is located at the air outlet of the casing; the thickness of the fan cover extends from the windward side to the leeward side; the thickness of the fan cover gradually decreases from the center to the outer edge.

[0038] This technical solution reduces the fan cover's resistance to airflow and increases the fan cover's air volume by gradually decreasing the thickness from the center to the outer edge, while ensuring the overall strength of the fan cover.

[0039] In the above embodiments, an outdoor air conditioner unit divides the fan cover into sections and designs the fan cover with non-uniform thickness. The thickness of the fan cover is designed according to the requirements of different sections, so that the thickness of the fan cover can meet the requirements of different sections. This reduces the air obstruction effect of the fan cover while giving it higher strength. This not only increases the air volume of the fan cover but also reduces the noise of the air outlet. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the structure of one embodiment of the outdoor unit of the air conditioner in this application;

[0041] Figure 2 This is a schematic diagram of the structure of the outdoor unit of the air conditioner in one embodiment of this application when the fan cover is not installed;

[0042] Figure 3 This is a schematic diagram of the internal structure of the casing of an outdoor unit of an air conditioner in one embodiment of this application;

[0043] Figure 4 This is a schematic diagram of the fan cover in one embodiment of the outdoor unit of the air conditioner in this application;

[0044] Figure 5 yes Figure 4 Enlarged view of a portion of point A in the middle;

[0045] Figure 6 This is a schematic diagram of the fan cover from another angle in one embodiment of the outdoor unit of the air conditioner in this application;

[0046] Figure 7 yes Figure 6 Enlarged view of a section at point B in the middle;

[0047] Figure 8 This is a schematic diagram of the fan cover being partitioned in one embodiment of the outdoor unit of the air conditioner in this application;

[0048] Figure 9 This is a schematic diagram of the structure of the first rib in one embodiment of the outdoor unit of the air conditioner in this application;

[0049] Figure 10 This is a schematic diagram of the structure of the first rib in another embodiment of the outdoor unit of the air conditioner in this application.

[0050] 100. Housing; 200. Fan cover; 300. Fan; 400. Heat exchanger; 500. Compressor;

[0051] 101. Air inlet of the casing; 102. Air outlet of the casing;

[0052] 110. Top plate; 120. Front panel; 130. First side panel; 140. Bottom plate; 150. Partition;

[0053] 210. First reinforcing rib; 220. Second reinforcing rib;

[0054] 201, Partition 1; 202, Partition 2; 203, Partition 3. Detailed Implementation

[0055] To make the objectives and implementation methods of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the exemplary embodiments described are only some embodiments of this application, and not all embodiments.

[0056] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0057] The terms "first," "second," "third," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar or related objects or entities, and do not necessarily imply a specific order or sequence, unless otherwise specified. It should be understood that such terms are interchangeable where appropriate.

[0058] The terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device that includes a range of components is not necessarily limited to all of the components that are clearly listed, but may include other components that are not clearly listed or that are inherent to such product or device.

[0059] The outdoor unit of the air conditioner provided in this application can have various implementation forms, such as a side-discharge type outdoor unit or a top-discharge type outdoor unit. Figures 1-3 This is one specific implementation of the outdoor unit of the air conditioner in this application.

[0060] like Figure 1 As shown, the outdoor unit of the air conditioner provided in this application includes a housing 100, which forms the overall appearance of the outdoor unit. The top and bottom of the housing 100 are opposite ends, and the height direction of the housing 100 is from the top to the bottom. The left and right sides of the housing 100 are opposite sides, and the length direction of the housing 100 is from the left to the right. The front and rear sides of the housing 100 are opposite sides, and the thickness direction of the housing 100 is from the front to the rear.

[0061] like Figure 2 As shown, the housing 100 includes a top plate 110, which is located at the top of the housing 100 and forms the top surface of the housing 100.

[0062] like Figure 3 As shown, the housing 100 includes a bottom plate 140, which is located at the bottom of the housing 100 and forms the bottom surface of the housing 100; the bottom plate 140 and the top plate 110 are arranged opposite to each other along the height direction of the housing 100.

[0063] like Figure 2 As shown, the housing 100 includes a front panel 120, which is located on the front side of the housing 100 and forms the front side surface of the housing 100.

[0064] The housing 100 includes a rear side panel located at the rear of the housing 100, which forms the rear side surface of the housing 100. It should be noted that in some embodiments, the housing 100 may not include a rear side panel to increase the air intake volume of the outdoor unit of the air conditioner.

[0065] like Figure 2 and Figure 3 As shown, the housing 100 includes a first side plate 130, which is located on the left or right side of the housing 100 and is used to form the left or right side of the housing 100.

[0066] The housing 100 includes a second side plate, which is disposed opposite to the first side plate 130 along the length of the housing 100; the second side plate is located on the left or right side of the housing 100 and is used to form the left or right side of the housing 100.

[0067] It should be noted that the first side plate 130 and the second side plate are respectively located on different sides of the casing 100 in the length direction. In this embodiment, the first side plate 130 is located on the left side of the casing 100, the second side plate is located on the right side of the casing 100, and part of the casing air outlet 102 is located on the second side plate.

[0068] like Figure 3 As shown, the housing 100 includes a partition 150, which is located inside the housing 100. The partition 150 is arranged along the height direction of the housing 100 and divides the interior of the housing 100 into a first chamber and a second chamber.

[0069] like Figure 1 As shown, the housing 100 includes a housing air inlet 101, which is connected to the first chamber. Air from outside the housing 100 enters the housing 100 through the housing air inlet 101.

[0070] There are multiple ways to position the air inlet 101 in the housing. One way is to position it on the rear side of the housing 100. Another way is to position it not only on the rear side of the housing 100, but also on the side wall of the first chamber away from the second chamber.

[0071] like Figure 2 As shown, the housing 100 includes a housing air outlet 102, which is located on the front side of the housing 100 and communicates with the first chamber. Air inside the housing 100 is output to the outside through the housing air outlet 102.

[0072] like Figure 3As shown, the outdoor unit of the air conditioner includes a heat exchanger 400, which is located inside the casing 100. The heat exchanger 400 is used to exchange heat with the air passing through it. The heat exchanger 400 is placed on the base plate 140, and the windward side of the heat exchanger 400 is set towards the air inlet 101 of the casing so that the air can come into contact with the heat exchanger as soon as possible after entering the casing, thereby increasing the contact efficiency between the heat exchanger and the air.

[0073] The heat exchanger 400 extends from the left side of the casing 100, past the rear side, to a position near the right side of the casing 100. This increases the heat exchange area of ​​the heat exchanger 400 without changing the internal space of the casing 100, thereby increasing its heat exchange efficiency. It should be noted that the extension direction of the heat exchanger 400 is its length.

[0074] like Figure 3 As shown, the outdoor unit of the air conditioner includes a compressor 500, which is located in the second chamber and connected to the base plate 140. The compressor 500 is used to drive the flow of refrigerant.

[0075] like Figure 2 and Figure 3 As shown, the outdoor unit of the air conditioner includes a fan 300, which is located in the first chamber. The air outlet side of the fan 300 faces the air outlet 102 of the casing. The air inlet side of the fan 300 is located on the leeward side of the heat exchanger 400.

[0076] By operating the fan 300, air from outside the casing 100 is introduced into the casing 100 through the casing air inlet 101, and / or air from inside the casing 100 is output to the outside of the casing 100 through the casing air outlet 102, so as to accelerate the heat exchange between the air and the heat exchanger 400, thereby increasing the heat exchange effect of the heat exchanger 400.

[0077] In this embodiment, the fan 300 is an axial flow fan, and the rotation axis of the fan 300 is set along the thickness direction of the casing 100.

[0078] like Figure 1 As shown, the outdoor unit of the air conditioner includes a fan cover 200, which is located at the air outlet 102 of the casing and is installed on the casing. The fan cover 200 can protect the fan 300 from entering the casing 100 through the air outlet 102 and contacting the fan 300, thus affecting the normal operation of the fan 300. On the other hand, it can make the air drawn in by the fan 300 more concentrated, thereby increasing the speed and pressure of the air and ultimately increasing the output air force of the fan.

[0079] The fan cover 200 has its windward side facing inward toward the housing 100, and its leeward side facing away from the housing 100. The distance from the windward side to the leeward side of the fan cover 200 is the thickness direction of the fan cover 200.

[0080] like Figures 4-7 As shown, the fan cover 200 includes a first rib 210, and multiple first ribs 210 are provided, with the multiple first ribs 210 arranged along the same straight line; the first ribs 210 are used to guide airflow.

[0081] It should be noted that the distance from the windward side to the leeward side of the first rib 210 is the thickness of the first rib 210.

[0082] In some embodiments, the fan cover 200 is square, and the first ribs 210 are arranged along opposite sides of the fan cover 200.

[0083] like Figures 4-7 As shown, the fan cover 200 includes a second rib 220, which is intersected with the first rib 210. The second rib 220 is used to connect multiple first ribs 210 together to increase the overall strength of the first ribs 210. It should be noted that the first ribs 210 and the second ribs 220 are interconnected to form a mesh structure of the fan cover 200.

[0084] The first rib 210 is longer, and the second rib 220 is shorter. The two ends of the second rib 220 are connected to two adjacent first ribs 210 in the length direction, so that the second rib 220 connects multiple first ribs 210 into one unit, without affecting the effect of the first ribs 210 on the air.

[0085] In some embodiments, the first rib 210 and the second rib 220 are arranged perpendicular to each other to increase the overall strength of the fan cover 200.

[0086] A larger thickness of the first rib 210 increases air resistance and reduces the airflow efficiency of the fan cover 200. While a smaller thickness of the first rib 210 can reduce air resistance, it can easily lead to a decrease in the overall strength of the fan cover 200. In related technologies, it is difficult to effectively balance the requirements of air resistance and strength for the fan cover 200 when determining the thickness of the first rib 210.

[0087] Based on this, in this application, the thickness of the fan cover 200 gradually decreases from the center of the fan cover 200 towards the outer edge, so as to reduce the resistance of the fan cover 200 to airflow while ensuring the overall strength of the fan cover 200.

[0088] In some embodiments of this application, the fan cover 200 is divided into sections according to the outer diameter of the fan 300, so that the first rib 210 has different thicknesses in different sections. This allows the thickness of the first rib 210 to be designed differently according to the requirements of different sections, thereby reducing the air resistance of the first rib 210, ensuring the airflow of the fan cover 200, and ensuring the air guiding effect of the first rib 210 and the overall strength of the fan cover 200.

[0089] like Figure 8 As shown, the fan cover 200 includes a first partition 201, which is located in the middle part of the fan cover 200. The projection point of the center of the fan 300 onto the fan cover 200 along the thickness direction is located within the first partition 201.

[0090] It should be noted that the center of the fan cover 200 is located within the first partition 201.

[0091] The airflow velocity through the first section 201 is relatively low, and the air volume of the first section 201 is also relatively low. Therefore, it can be seen that the first rib 210 plays a more important role in the first section 201 in ensuring the strength of the fan cover 200.

[0092] like Figure 8 As shown, the fan shroud 200 includes a second partition 202, which is located on the outer periphery of the first partition 201.

[0093] like Figure 8 As shown, the fan shroud 200 includes a third partition 203, which is located on the outer periphery of the second partition 202; the third partition 203 is located on the outer edge of the fan shroud 200.

[0094] The thickness of the fan cover 200 gradually decreases in the first section 201, the second section 202, and the third section 203. That is, the thickness of the first rib 210 gradually decreases in the first section 201, the second section 202, and the third section 203. The thickness of the first rib 210 in the first section 201 is greater than the thickness in the second section 202, and the thickness of the first rib 210 in the second section 202 is greater than the thickness in the third section 203.

[0095] It should be noted that the fan cover 200 is set with the same thickness in the first partition 201 and the third partition 203, and the thickness of the fan cover 200 in the second partition 202 gradually decreases from the first partition 201 toward the third partition 203.

[0096] That is, the thickness of the first rib 210 is the same in the first partition 201, the thickness of the first rib 210 is the same in the third partition 203, and the thickness of the first rib 210 varies in the second partition 202, so as to achieve the transition from the thickness dimension of the first partition 201 to the thickness dimension of the third partition 203.

[0097] In some embodiments, the thickness of the first rib 210 is reduced in the second partition 202 in any form of linear, exponential, or power function so that the first rib 210 changes smoothly within the second partition 202, thereby achieving a smooth transition of the first rib 210 between the first partition 201 and the third partition 203.

[0098] The first zone 201 has the lowest airflow, and in practical applications, backflow may also occur. The airflow speed gradually increases in the second zone 202, reaching its maximum speed near the third zone 203, and then gradually decreases in the third zone 203. That is, the airflow speed is lowest when passing through the first zone 201, and the airflow speed is highest when passing through the boundary between the second zone 202 and the third zone 203.

[0099] In some embodiments of this application, the area of ​​the first partition 201 is circular, the outer diameter of the fan 300 is D, and the radius R1 of the first partition 201 satisfies: R1 < αD; α is a constant.

[0100] If R1≥αD, the area of ​​the first partition 201 is larger, and the first rib 210 increases its air-blocking effect; if R1<αD, the area of ​​the first partition 201 is smaller, and the overall strength of the fan cover 200 is lower.

[0101] The larger the outer diameter of the fan 300, the smaller the value of α. The larger the outer diameter of the fan 300, the larger the radius of the first partition 201 and the larger the area of ​​the first partition 201. If the area of ​​the first partition 201 is too large, the first rib 210 will have a strong blocking effect on the air. Therefore, by making the value of α negatively correlated with the outer diameter of the fan 300, the area of ​​the first partition 201 is balanced, and the blocking effect of the first rib 210 on the air is reduced.

[0102] In some embodiments, α satisfies: α≥0.55, α≤0.65.

[0103] If α < 0.55, the area of ​​the first partition 201 is small, and the overall strength of the fan cover 200 is low; if α > 0.65, the area of ​​the first partition 201 is large, and the air blocking effect of the first rib 210 is increased.

[0104] In some embodiments of this application, the area of ​​the second partition 202 is an annulus, and the radius R2 of the second partition 202 satisfies: R2≥αD, R2≤βD, where α and β are constants.

[0105] If R2 < αD, the area of ​​the second partition 202 is larger and the area of ​​the first partition 201 is smaller, which can easily result in lower overall strength of the fan cover 200. If R2 > βd, the area of ​​the second partition 202 is larger and the thickness of the first rib 210 in the second partition 202 is still relatively large, which can easily result in greater airflow resistance of the fan cover 200 and affect the airflow performance of the fan cover 200.

[0106] The larger the outer diameter of the fan 300, the smaller the values ​​of α and β. The larger the outer diameter of the fan 300, the larger the radius of the second partition 202 and the larger the area of ​​the second partition 202. If the area of ​​the second partition 202 is too large, the first rib 210 will have a strong blocking effect on the air. Therefore, by making the values ​​of α and β negatively correlated with the outer diameter of the fan 300, the area of ​​the second partition 202 is balanced, and the blocking effect of the first rib 210 on the air is reduced.

[0107] β satisfies: β≥0.8, α≤0.9; if β<0.8, the area of ​​the second partition 202 is smaller and the overall strength of the fan cover 200 is lower; if β>0.9, the area of ​​the second partition 202 is larger and the air blocking effect of the first rib 210 is increased.

[0108] The thickness of the first rib 210 in the first partition 201 is H1, and the thickness of the first rib 210 in the third partition 203 is H2. H2 and H1 satisfy: H2≥0.4H1, H2≤0.7H1.

[0109] If H2 < 0.4H1, the thickness of the first rib 210 varies significantly between the first section 201 and the third section 203, which may reduce the overall strength of the fan cover 200. If H2 > 0.7H1, the thickness of the first rib 210 varies less between the first section 201 and the third section 203, which may not effectively reduce the air-blocking effect of the first rib 210.

[0110] When the outer diameter D of the fan 300 is less than the first threshold, the thickness of the fan cover 200 is h1, h1≥10mm, h1≤16mm.

[0111] If h1 < 10 mm, the thickness of the first rib 210 is relatively large, and the fan cover 200 has a stronger air blocking effect; if h1 > 16 mm, the thickness of the first rib 210 is relatively small, and the overall strength of the fan cover 200 is relatively low.

[0112] When the outer diameter D of the fan 300 is greater than the second threshold, the thickness of the fan cover 200 is h2, h2≥0.6h1, h2≤0.8h1; h2≥6mm, h2≤10.8mm.

[0113] If h2 < 6 mm, the thickness of the first rib 210 is relatively large, and the fan cover 200 has a stronger air blocking effect; if h2 > 10.8 mm, the thickness of the first rib 210 is relatively small, and the overall strength of the fan cover 200 is relatively low.

[0114] When the outer diameter D of the fan 300 is greater than or equal to the first threshold and / or less than or equal to the second threshold, the thickness of the fan cover 200 is h3, h3=h1-(h1-h2)*ln(e^((D-300) / 320)), in order to reduce the obstruction effect of the fan cover 200 on the air and to make the fan cover 200 have higher strength.

[0115] In some embodiments, the first threshold is 300 mm and the second threshold is 620 mm.

[0116] In some embodiments of this application, the thickness of the fan shroud 200 is changed by altering the windward side of the fan shroud 200.

[0117] Specifically, such as Figure 9 As shown, the front panel 120 of the housing 100, which has a housing air outlet 102, is defined by a first plane. The distance from the leeward side of the fan cover 200 to the first plane is the same, and the distance from the windward side of the fan cover 200 to the first plane gradually decreases along the arrangement direction of the first partition 201, the second partition 202 and the third partition 203. That is, the distance from the leeward side of the first rib 210 to the first plane is the same, and the distance from the windward side of the first rib 210 to the first plane gradually decreases along the arrangement direction of the first partition 201, the second partition 202 and the third partition 203.

[0118] It should be noted that the leeward side of the fan cover 200 can be considered as a flat surface, while the windward side of the fan cover 200 is a curved surface.

[0119] In other embodiments of this application, the thickness of the fan shroud 200 is changed by altering the leeward side of the fan shroud 200.

[0120] Specifically, such as Figure 10As shown, the front panel 120 of the housing 100, which has a housing air outlet 102, defines a first flat surface. The distance from the windward side of the fan shroud 200 to the first flat surface is the same, and the distance from the leeward side of the fan shroud 200 to the first flat surface gradually decreases along the arrangement direction of the first partition 201, the second partition 202, and the third partition 203. That is, the distance from the windward side of the first rib 210 to the first flat surface is the same, and the distance from the leeward side of the first rib 210 to the first flat surface gradually decreases along the arrangement direction of the first partition 201, the second partition 202, and the third partition 203.

[0121] It should be noted that the windward side of the fan cover 200 can be considered as a flat surface, while the leeward side of the fan cover 200 is a curved surface.

[0122] For ease of description, the fan cover 200 with the same thickness as the first rib 210 in the relevant technology is called the first fan cover, the fan cover 200 with the windward side equidistant from the first plane is called the second fan cover, and the fan cover 200 with the leeward side equidistant from the first plane is called the third fan cover. The first fan cover, the second fan cover and the third fan cover are tested below to verify the performance of different fan covers 200.

[0123] Under experimental conditions of a fan speed of 8000 rpm and a fan speed of 300, the air volume of the first fan cover was 4750 CMH, the air volume of the second fan cover was 4920 CMH, and the air volume of the third fan cover was 4940 CMH.

[0124] Under experimental conditions with an airflow of 4750 CMH, the noise level of the first fan cover was 49.4 dB, while that of the second fan cover was 47.7 dB and that of the third fan cover was 47.1 dB.

[0125] In some embodiments, by making the thickness of the first rib 210 inconsistent in different zones, this application can increase the air volume by 4% at the same rotation speed and reduce the noise by 1.6~2.3dB at the same air volume compared with related technologies.

[0126] In the aforementioned outdoor air conditioning unit, by designing the first rib 210 with non-uniform thickness, the fan cover 200 is divided into sections according to the outer diameter of the fan 300. The thickness of the first rib 210 is designed according to the requirements of different sections, so that the thickness of the first rib 210 has different thickness values ​​in different sections. This allows the thickness of the first rib 210 to meet the requirements of different sections, thereby reducing the air obstruction effect of the fan cover 200 while giving it higher strength. This not only increases the air volume of the fan cover 200 but also reduces the noise from the airflow.

[0127] 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.

[0128] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. An air conditioner outdoor unit characterized by comprising: include: The housing includes the housing air inlet and the housing air outlet; A compressor, located inside the housing, is used to drive the flow of refrigerant; A heat exchanger is disposed inside the casing, with the windward side of the heat exchanger facing the air inlet of the casing; A fan is located inside the casing, on the leeward side of the heat exchanger, with the fan's outlet facing the casing's outlet. A fan cover is provided at the air outlet of the housing; The thickness direction of the fan shroud extends from the windward side to the leeward side; the fan shroud includes: The first partition is located in the middle part of the fan cover, and the projection point of the center of the fan onto the fan cover along the thickness direction is located in the first partition; The second partition is located on the outer periphery of the first partition; The third partition is located on the outer periphery of the second partition; the third partition is located on the outer edge of the fan shroud. The thickness of the fan shroud gradually decreases in the first, second, and third partitions.

2. The air conditioner outdoor unit according to claim 1, characterized by The fan cover is provided with equal thickness in the first partition and the third partition, and the thickness of the fan cover in the second partition gradually decreases from the first partition toward the third partition.

3. The air conditioner outdoor unit according to claim 1 or 2, characterized by The thickness of the fan shroud is reduced in the second partition using any of the linear, exponential, or power functions.

4. The air conditioner outdoor unit according to claim 1, characterized by The outer diameter of the fan is D, and the radius R1 of the first partition satisfies: R1<αD; the α satisfies: α≥0.55, α≤0.65; the value of α is negatively correlated with the outer diameter D of the fan.

5. The air conditioner outdoor unit according to claim 1, wherein The outer diameter of the fan is D, and the radius R2 of the second partition satisfies: R2≥αD, R2≤βD, where α satisfies: α≥0.55, α≤0.65; and β satisfies: β≥0.8, α≤0.

9. The values ​​of α and β are negatively correlated with the outer diameter D of the fan.

6. The air conditioner outdoor unit according to claim 1, characterized by The fan cover includes a first rib and a second rib. Multiple first ribs are arranged along the same straight line. The second rib is arranged to intersect with the first ribs so that the multiple first ribs are interconnected through the second rib.

7. The air conditioner outdoor unit according to claim 6, characterized by The thickness of the first rib in the first partition is H1, and the thickness of the first rib in the third partition is H2. H2 and H1 satisfy: H2≥0.4H1, H2≤0.7H1.

8. The air conditioner outdoor unit according to claim 1, characterized by The side wall of the housing with the housing air outlet is defined to form a first plane. The distance from the leeward side of the fan cover to the first plane is the same, and the distance from the windward side of the fan cover to the first plane gradually decreases along the arrangement direction of the first partition, the second partition and the third partition.

9. The outdoor unit of the air conditioner according to claim 1, characterized in that, The side wall of the housing with the housing air outlet is defined to form a first plane. The distance from the windward side of the fan cover to the first plane is the same, and the distance from the leeward side of the fan cover to the first plane gradually decreases along the arrangement direction of the first partition, the second partition and the third partition.

10. An outdoor unit for an air conditioner, characterized in that, include: The housing includes the housing air inlet and the housing air outlet; A compressor, located inside the housing, is used to drive the flow of refrigerant; A heat exchanger is disposed inside the casing, with the windward side of the heat exchanger facing the air inlet of the casing; A fan is located inside the casing, on the leeward side of the heat exchanger, with the fan's outlet facing the casing's outlet. A fan cover is provided at the air outlet of the housing; the thickness direction of the fan cover is from the windward side to the leeward side of the fan cover; the thickness of the fan cover gradually decreases from the center of the fan cover towards the outer edge.

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