Air conditioner outdoor unit

Abstract

The utility model discloses an air conditioner outdoor unit, and belongs to the technical field of air conditioners. The air conditioner outdoor unit comprises a shell; the outdoor heat exchanger is arranged in the shell; the fan is arranged on the air outlet side of the outdoor heat exchanger and used for driving air to flow; the motor support is connected with the shell, and the motor support comprises a motor mounting plate on which the fan is connected; the two supporting beams are connected to the two sides of the motor mounting plate respectively; the first cross beam is connected between the two supporting beams, and the first cross beam is arranged above the motor mounting plate; wherein projection on a plane parallel to the plate surface of the motor mounting plate, the distance from the center of the first cross beam to the center of the motor mounting plate is H1, the distance from the center of the motor mounting plate to the top end of the motor support is H3, and H1 / H3 is larger than or equal to 0.45. The air conditioner outdoor unit can reduce noise.

Description

Technical Field

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

[0002] An air conditioner is a device that controls the temperature and humidity of indoor air using a refrigeration cycle. An air conditioner may include an outdoor unit and an indoor unit that are separately installed.

[0003] When the outdoor unit of the air conditioner is working, the axial flow fan rotates to make the air flow into from the outdoor heat exchanger, flow through the motor bracket and then be sent out of the machine after being pressurized by the fan. In order to avoid blocking the wind, the axial projection area of the motor bracket is small. At the same time, in order to bear the weight of the motor and the axial flow fan, a cross beam is added between the two support beams of the motor bracket to improve the structural strength of the entire bracket. During the operation of the axial flow fan, noise will be generated when the air flow passes through the motor bracket. Utility Model Content

[0004] This application provides an outdoor unit of an air conditioner, which can reduce noise.

[0005] In one aspect of this application, an outdoor unit of an air conditioner includes: a housing; an outdoor heat exchanger disposed inside the housing; a fan disposed on the air outlet side of the outdoor heat exchanger for driving air flow; a motor bracket connected to the housing, the motor bracket including: a motor mounting plate to which the fan is connected; two support beams respectively connected to both sides of the motor mounting plate; a first cross beam connected between the two support beams, and the first cross beam is disposed above the motor mounting plate;

[0006] Wherein, in the plane projected parallel to the plate surface of the motor mounting plate, the distance from the center of the first cross beam to the center of the motor mounting plate is H1, and the distance from the center of the motor mounting plate to the top end of the motor bracket is H3, and H1 / H3≥0.45.

[0007] In this application, H1 / H3≥0.45 can ensure that the distance from the first cross beam to the motor mounting plate is not too small, avoiding the convergence of two low-speed eddy current areas flowing through the motor mounting plate and flowing through the first cross beam to cause a large-scale low-speed area, thereby improving the air supply volume of the whole machine; and due to the reduction of the low-speed area range, it is possible to avoid the coupling of the low-speed area and the high-speed flow near the fan, thereby reducing the air supply noise.

[0008] In some embodiments, H1 / H3≤0.75.

[0009] If the value of H1 / H3 is too large, the first cross beam 331 is at the position where the air inlet speed is the largest, which will cause the uniformity of the wind field to decline and the air volume to decline.

[0010] In some embodiments, the width of the first cross beam is H2, and 0.09≤H2 / H3≤0.11.

[0011] If the value of H2 / H3 is too small, the width of the first crossbeam is relatively small, resulting in insufficient strength of the first crossbeam. The connection between the support beam and the first crossbeam is prone to fracture, and the support beam swings as the fan rotates, which will deteriorate the noise.

[0012] If the value of H2 / H3 is too large, the width of the first crossbeam is relatively large, increasing the cost. At the same time, the first crossbeam blocks the air inlet path, resulting in a decrease in air volume.

[0013] In some embodiments, the distance from the center of the motor mounting plate to the bottom end of the motor bracket is H6, and 1.02 ≤ H3 / H6 ≤ 1.05.

[0014] If the value of H3 / H6 is too small, the center of gravity of the motor bracket moves upward, the stress at the connection between the bottom of the motor bracket and the housing increases, and the stability becomes poor, resulting in an increased noise risk.

[0015] If the value of H3 / H6 is too large, the motor mounting plate is relatively close to the lower part of the motor bracket, and the fan is located at the lower part of the housing, which will affect the air supply uniformity and the heat exchange capacity will become poor.

[0016] In some embodiments, the motor bracket includes: a second crossbeam connected between two support beams, and the second crossbeam is disposed below the motor mounting plate; the distance from the center of the second crossbeam to the center of the motor mounting plate is H4, and H4 / H6 ≥ 0.4.

[0017] If the value of H4 / H6 is too small, the second crossbeam is relatively close to the motor mounting plate, and the two low-speed eddy current regions flowing through the motor mounting plate and the second crossbeam will converge, resulting in a large-scale low-speed region. This will not only reduce the air volume but also easily couple with the high-speed flow near the fan, increasing the air supply noise.

[0018] In some embodiments, H4 / H6 ≤ 0.6. If the value of H4 / H6 is too large, the second crossbeam is at the position with the maximum inlet air velocity, which will cause the wind field uniformity to decrease and the air volume to decrease.

[0019] In some embodiments, the width of the second crossbeam is H5, and 0.09 ≤ H5 / H6 ≤ 0.11.

[0020] If the value of H5 / H6 is too small, the width of the second crossbeam is relatively small, resulting in insufficient strength of the second crossbeam. The connection between the support beam and the second crossbeam is prone to fracture, and the support beam swings as the fan rotates, which will deteriorate the noise.

[0021] If the value of H5 / H6 is too large, the width of the second crossbeam is relatively large, increasing the cost. At the same time, the second crossbeam blocks the air inlet path, resulting in a decrease in air volume.

[0022] In some embodiments, the support beam extends linearly in the height direction. It can ensure that the width of the support beam in the front-rear direction is relatively small, so that the width of the air conditioner outdoor unit in the front-rear direction is relatively small.

[0023] On the other hand, an air conditioner outdoor unit of the present application includes: a housing; an outdoor heat exchanger disposed inside the housing; a fan disposed on the air outlet side of the outdoor heat exchanger for driving air flow; a motor bracket connected to the housing, the motor bracket including: a motor mounting plate to which the fan is connected; two support beams respectively connected to both sides of the motor mounting plate; a cross beam connected between the two support beams, and the cross beam is spaced apart from the motor mounting plate;

[0024] When the cross beam is located above the motor mounting plate, the cross beam is the first cross beam; in the plane projected parallel to the plane of the motor mounting plate, the distance from the center of the first cross beam to the center of the motor mounting plate is H1, and the distance from the center of the motor mounting plate to the top end of the motor bracket is H3, and H1 / H3≥0.45;

[0025] When the cross beam is located below the motor mounting plate, the cross beam is the second cross beam; in the plane projected parallel to the plane of the motor mounting plate, the distance from the center of the second cross beam to the center of the motor mounting plate is H4, and the distance from the center of the motor mounting plate to the bottom end of the motor bracket is H6, and H4 / H6≥0.4.

[0026] In some embodiments, a plurality of ventilation portions arranged at intervals are provided on the cross beam for air circulation. The arrangement of the ventilation portions can reduce the blockage of the cross beam to the air flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Shows a perspective view of an air conditioner outdoor unit according to some embodiments;

[0028] Figure 2 Shows a cross-sectional view of an air conditioner outdoor unit according to some embodiments;

[0029] Figure 3 Shows a partial view of an air conditioner outdoor unit according to some embodiments;

[0030] Figure 4 Shows a perspective view of a motor bracket of an air conditioner outdoor unit according to some embodiments;

[0031] Figure 5 Shows a front view of a motor bracket of an air conditioner outdoor unit according to some embodiments;

[0032] Figure 6 Shows a perspective view of a motor bracket of an air conditioner outdoor unit according to other embodiments;

[0033] Figure 7Shows a front view of the motor bracket of an air conditioner outdoor unit according to some other embodiments;

[0034] Figure 8 Shows a comparison linear graph of air volume - noise between the motor bracket before optimization and the motor bracket after optimization used in the air conditioner outdoor unit.

[0035] In the above figures, 10 is the housing; 11 is the top plate; 12 is the bottom plate; 13 is the side plate; 131 is the air outlet panel; 14 is the air inlet; 15 is the air outlet; 20 is the outdoor heat exchanger; 30 is the motor bracket; 31 is the support beam; 313 is the ventilation area; 32 is the motor mounting plate; 33 is the cross beam; 33A is the ventilation part; 331 is the first cross beam; 332 is the second cross beam; 34 is the flanging; 35 is the upper support plate; 351 is the first strengthening press type; 36 is the lower support plate; 361 is the second strengthening press type; 37 is the hemming; 40 is the fan; 41 is the motor; 42 is the fan. Detailed implementation manners

[0036] To make the purpose and implementation manners of this application clearer, the following will clearly and completely describe the exemplary implementation manners of this application with reference to the accompanying drawings in the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only a part of the embodiments of this application, rather than all of the embodiments.

[0037] In the description of this application, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of this application.

[0038] The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0039] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0040] The air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.

[0041] The compressor compresses the refrigerant gas in a low-temperature and low-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0042] The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration effect by using the latent heat of evaporation of the refrigerant to perform a heat exchange with the material to be cooled. Throughout the cycle, the air conditioner can adjust the temperature of the indoor space.

[0043] The outdoor unit of the air conditioner refers to the part of the refrigeration cycle including the compressor and the outdoor heat exchanger. The indoor unit of the air conditioner includes an indoor heat exchanger, and the expansion valve can be provided in the indoor unit or the outdoor unit.

[0044] The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger serves as a condenser, the air conditioner serves as a heater in the heating mode. When the indoor heat exchanger serves as an evaporator, the air conditioner serves as a cooler in the cooling mode.

[0045] Refer to Figure 1 and Figure 2 According to an embodiment of the present application, an outdoor unit of an air conditioner includes a housing 10.

[0046] The housing 10 forms the overall appearance of the outdoor unit of the air conditioner. The housing 10 includes a top plate 11, a bottom plate 12, and side plates 13 connected between the top plate 11 and the bottom plate 12.

[0047] An air inlet 14 and an air outlet 15 are provided on the side plate 13 of the housing 10. Outdoor air enters the housing 10 from the air inlet 14 and blows out of the housing 10 from the air outlet 15. Among them, the side where the air outlet 15 is located is defined as the front. An air outlet panel 131 is provided on the front side plate, and the air outlet 15 is provided on the air outlet panel 131. Usually, the air outlet panel 131 is an air outlet grille panel.

[0048] The air conditioner outdoor unit includes an outdoor heat exchanger 20. The outdoor heat exchanger 20 is disposed in the housing 10 corresponding to the air inlet 14 and is used to absorb heat from the air introduced into the air inlet 14 or transfer heat to the air.

[0049] The air conditioner outdoor unit includes a motor bracket 30. The motor bracket 30 is connected inside the housing 10, located between the outdoor heat exchanger 20 and the air outlet 15, and the motor bracket 30 is disposed close to the outdoor heat exchanger 20 and is used to support and fix the blower 40.

[0050] The air conditioner outdoor unit includes a blower 40. The blower 40 is located on the side of the motor bracket 30 away from the outdoor heat exchanger 30; the blower 40 includes a motor 41 and a fan blade 42, and the fan blade 42 is connected to the motor 41. The rotor of the motor 41 drives the fan blade 42 to rotate, thereby driving air to flow from the air inlet 14 to the air outlet 15. The motor 41 is connected to the motor bracket 30 to realize the connection of the blower 40 inside the housing 10.

[0051] Refer to Figure 5 and Figure 7 , the motor bracket 30 includes a support beam 31 and a motor mounting plate 32.

[0052] The support beam 31 is in a long strip shape, extends along the height direction (vertical direction), and the two support beams 31 are arranged at intervals.

[0053] The motor mounting plate 32 is in a square plate shape, is connected between the two support beams 31, and is located in the middle of the support beam 31 along the height direction. The motor 41 is mounted on the motor mounting plate 32 through fasteners such as screws.

[0054] The motor bracket 30 may include a cross beam 33. The space between the two support beams 31 is a ventilation area 313, and the cross beam 33 is located in the ventilation area 313 and is connected to the two support beams 31.

[0055] The cross beam 33 can improve the structural strength of the motor bracket 30, thereby reducing the vibration noise of the motor bracket 30.

[0056] At present, the size of air conditioner outdoor units is trending towards miniaturization, especially the width dimension (front-to-back dimension) is decreasing to reduce the requirement for the protruding area of the installation terrace on high-rise buildings. The main components determining the width dimension of the outdoor unit are the fan 40, the motor bracket 30, and the outdoor heat exchanger 20. Among them, the outdoor heat exchanger 20 is strongly related to the overall energy efficiency of the unit, and the fan 40 needs to meet the requirements of the overall heat dissipation capacity of the unit, and their sizes cannot be randomly reduced.

[0057] Existing low-noise motor brackets 30 are all arched. Although the axial distance between the fan 42 and the motor bracket 30 is increased, and the coupling pulsation effect of the airflow between the fan 42 and the motor bracket 30 is reduced, at the same time, the dimension of the motor bracket 30 in the front-to-back direction is increased, which raises the requirement for outdoor installation. If the dimension of the motor bracket 30 in the front-to-back direction is not increased, there will be a problem of high noise. Therefore, the noise reduction design of the motor bracket 30 needs to be considered.

[0058] The cross beam 33 of the existing motor bracket 30 is often close to the position of the motor mounting plate 32, resulting in the convergence of two low-speed eddies flowing through the cross beam 33 and the motor mounting plate 32, generating a large-scale low-speed area. This will not only reduce the overall air volume of the unit, but also easily couple with the high-speed flow near the fan 42, increasing the blowing noise.

[0059] According to the position of the cross beam 33 relative to the motor mounting plate 32, the cross beam 33 located above the motor mounting plate 32 is called the first cross beam 331; the cross beam 33 located below the motor mounting plate 32 is called the second cross beam 332.

[0060] In some embodiments, the motor bracket 30 includes the first cross beam 331. The two transverse ends of the first cross beam 331 are respectively connected to two support beams 31.

[0061] Refer to Figure 5 and Figure 7 In the plane parallel to the plate surface of the motor mounting plate 32, the distance from the center of the first cross beam 331 to the center of the motor mounting plate 32 is denoted as H1, and the distance from the center of the motor mounting plate 32 to the top of the motor bracket 30 is denoted as H3.

[0062] H1 / H3≥0.45. If the value of H1 / H3 is too small, then the first cross beam 331 is relatively close to the motor mounting plate 32, and the two low-speed eddy current areas flowing through the motor mounting plate 32 and the first cross beam 331 will converge, resulting in a large-scale low-speed area, which will not only reduce the air volume, but also easily couple with the high-speed flow near the fan 42, increasing the blowing noise.

[0063] Therefore, in the present application, setting H1 / H3≥0.45 can ensure that the distance from the first cross beam 331 to the motor mounting plate 32 is not too small, avoiding the convergence of two low-speed eddy current regions after flowing through the motor mounting plate 32 and the first cross beam 331, which may cause a large-scale low-speed region, thereby improving the air supply volume of the whole machine; and since the range of the low-speed region is reduced, the coupling between the low-speed region and the high-speed flow near the fan 42 can be avoided, thus reducing the air supply noise.

[0064] In some embodiments, H1 / H3≤0.75. If the value of H1 / H3 is too large, the first cross beam 331 is at the position with the maximum air inlet speed, which will cause the wind field uniformity to decrease and the air volume to decrease.

[0065] Therefore, in the present application, setting H1 / H3≤0.75 can avoid the influence of the first cross beam 331 on the wind field uniformity and ensure the air supply volume.

[0066] As a preferred embodiment, H1 / H3 = 0.6. At this value, the air supply volume and air supply noise of the whole machine are the smallest.

[0067] In some embodiments, the width of the first cross beam 331 is denoted as H2.

[0068] H2 / H3≥0.09. If the value of H2 / H3 is too small, the width of the first cross beam 331 is relatively small, which will cause insufficient strength of the first cross beam 331, and it is easy to break at the connection between the support beam 31 and the first cross beam 331. The support beam 31 swings with the rotation of the fan 40, which will deteriorate the noise.

[0069] Therefore, in the present application, setting H2 / H3≥0.09 can ensure the structural strength of the first cross beam 331 and increase the stability of the two support beams 31 through the first cross beam 331, avoiding the problem of noise deterioration caused by the swing of the support beam 31 with the rotation of the fan 40.

[0070] In some embodiments, H2 / H3≤0.11. If the value of H2 / H3 is too large, the width of the first cross beam 331 is relatively large, resulting in increased costs. At the same time, the first cross beam 331 blocks the air inlet path, which will cause a decrease in air volume.

[0071] Therefore, in the present application, setting H2 / H3 = 0.09 - 0.11 can reduce the blockage of the air inlet path on the premise of ensuring the strength of the first cross beam 331 and ensure the air supply volume.

[0072] As a preferred embodiment, H2 / H3 = 0.1. At this value, on the premise of ensuring the strength of the first cross beam 331, the blockage of the first cross beam 331 to the air inlet is the smallest and the air supply volume is the largest.

[0073] In this application, setting the width of the first crossbeam 331 too large will result in a larger windshield area, while setting the width of the first crossbeam 331 too small will result in insufficient structural strength, which can easily lead to fatigue fracture during long-term operation under the high-speed windshield of the fan 42. Therefore, this application optimizes the width and relative position of the first crossbeam 331 from the perspectives of airflow movement and structural strength, reducing the turbulent pulsation of the airflow near the motor bracket 30, reducing the turbulent kinetic energy and vortex intensity of the airflow, and improving the measured air supply noise performance of the entire machine.

[0074] In some embodiments, the distance from the center of the motor mounting plate 32 to the bottom end of the motor bracket 30 is denoted as H6.

[0075] H3 / H6 ≥ 1.02. Since the motor bracket 30 bears the weight of the motor 41 and the fan 42, if the value of H3 / H6 is too small, the center of gravity of the motor bracket 30 will move upward, and the fixing force between the bottom of the motor bracket 30 and the bottom plate 12 will increase, resulting in poor stability and increased noise risk.

[0076] Therefore, the present application sets H3 / H6≥1.02 to ensure the stability of the connection between the bottom of the motor bracket 30 and the housing 10, thereby avoiding an increase in noise risk.

[0077] In some embodiments, H3 / H6≤1.05. If the value of H3 / H6 is too large, the motor mounting plate 32 is relatively close to the lower portion of the motor bracket 30, and the fan 42 and the motor 41 are located at the lower portion of the housing 10, which will affect the uniformity of air supply and reduce the heat exchange capacity.

[0078] Therefore, the present application sets H3 / H6≤1.05, which can ensure that the fan 42 and the motor 41 are located in the middle of the housing 10, thereby ensuring air supply uniformity and heat exchange capacity.

[0079] In the present application, H3 / H6=1.02~1.05 is set, which can ensure the stability of the connection between the motor bracket 30 and the housing 10 and avoid the increase of noise risk, while not affecting the uniformity of air supply and ensuring heat exchange capacity.

[0080] As a preferred embodiment, H3 / H6=1.035. At this value, under the premise of ensuring air supply uniformity and heat exchange capacity, the motor bracket 30 has the least impact on the noise of the entire machine.

[0081] In some embodiments, reference Figure 6 The motor bracket 30 includes a second crossbeam 332. The two ends of the second crossbeam 332 are connected to the two support beams 31 respectively.

[0082] Reference Figure 7 , projected onto a plane parallel to the surface of the motor mounting plate 32 , the distance from the center of the second beam 332 to the center of the motor mounting plate 32 is recorded as H4.

[0083] H4 / H6 ≥ 0.4. If the value of H4 / H6 is too small, then the second crossbeam 332 is relatively close to the motor mounting plate 32, and the two low-speed eddy current regions flowing through the motor mounting plate 32 and the second crossbeam 332 will converge, resulting in a large-scale low-speed region, which will not only reduce the air volume but also easily couple with the high-speed flow near the fan 42, increasing the air supply noise.

[0084] Therefore, in this application, setting H4 / H6 ≥ 0.4 can ensure that the distance between the second crossbeam 332 and the motor mounting plate 32 is not too small, avoiding the large-scale low-speed region caused by the convergence of the two low-speed eddy current regions flowing through the motor mounting plate 32 and the second crossbeam 332, and improving the air supply volume of the whole machine; and since the range of the low-speed region is reduced, it is possible to avoid the coupling of the low-speed region with the high-speed flow near the fan 42, thereby reducing the air supply noise.

[0085] In some embodiments, H4 / H6 ≤ 0.6. If the value of H4 / H6 is too large, then the second crossbeam 332 is at the position where the inlet air velocity is the largest, which will cause the uniformity of the wind field to decrease and the air volume to decrease.

[0086] Therefore, in this application, setting H4 / H6 ≤ 0.6 can avoid the influence of the second crossbeam 332 on the uniformity of the wind field and ensure the air supply volume.

[0087] As a preferred embodiment, H4 / H6 = 0.5. At this value, the air supply volume and air supply noise of the whole machine are the smallest.

[0088] In some embodiments, the width of the second crossbeam 332 is denoted as H5.

[0089] H5 / H6 ≥ 0.09. If the value of H5 / H6 is too small, then the width of the second crossbeam 332 is relatively small, which will cause insufficient strength of the second crossbeam 332, and it is easy to break at the connection between the support beam 31 and the second crossbeam 332. The support beam 31 swings with the rotation of the fan 40, which will deteriorate the noise.

[0090] In some embodiments, H5 / H6 ≤ 0.11. If the value of H5 / H6 is too large, then the width of the second crossbeam 332 is relatively large, resulting in an increase in cost. At the same time, the second crossbeam 332 blocks the air inlet path, which will cause a decrease in air volume.

[0091] Therefore, in this application, setting H5 / H6 = 0.09 - 0.11 can reduce the blockage of the air inlet path while ensuring the strength of the second crossbeam 332 and ensure the air supply volume.

[0092] As a preferred embodiment, H5 / H6 = 0.1. At this value, while ensuring the strength of the second crossbeam 332, the second crossbeam 332 has the least blockage of the incoming air, and the maximum air supply volume.

[0093] In this application, if the width of the second crossbeam 332 is set too large, it will result in a large wind-blocking area, while if the width of the second crossbeam 332 is set too small, it will lead to insufficient structural strength and fatigue fracture is likely to occur during long-term operation at the high-speed wind setting of the fan 42. Therefore, in this application, considering the air flow movement and structural strength, the width and relative position of the second crossbeam 332 are optimized, reducing the turbulent pulsation of the air flow near the motor bracket 30, and the turbulent kinetic energy and vorticity intensity of the air flow decrease, and the measured whole-machine air supply noise performance becomes better.

[0094] In this application, after optimizing the size of the motor bracket 30, the air volume is increased compared with that before optimization, and at the same air volume, the air supply noise is reduced.

[0095] The following are the comparison test data of the air conditioner outdoor unit using the motor bracket 30 before optimization and the motor bracket 30 after optimization:

[0096]

[0097]

[0098] As can be seen from the above table, for the air conditioner outdoor unit, under the condition of the same fan speed, the air volume generated by using the motor bracket after optimization is higher than that generated by using the motor bracket before optimization, and the noise is lower.

[0099] This application also conducts a comparative test on the noise generated by the air conditioner outdoor unit using the motor bracket before optimization and the motor bracket after optimization at the same air volume. Referring to Figure 8 , as can be seen from the figure, the whole-machine noise of using the motor bracket after optimization is 0.7 - 1.5 dB lower than that of using the motor bracket before optimization.

[0100] In some embodiments, the width H2 of the first crossbeam 331 and the width H5 of the second crossbeam 332 may be the same.

[0101] In some embodiments, the support beam 31 extends linearly in the height direction. In this way, the size of the support beam 31 in the front-rear direction can be made smaller, thereby ensuring that the front-rear size of the air conditioner outdoor unit is relatively small.

[0102] In some embodiments, a through hole penetrating front and rear may be provided on the crossbeam 33 to form a ventilation part 33A, so that while strengthening the structural strength of the motor bracket 30, the crossbeam 33 reduces its blockage of the air flow. The ventilation part 33A is in the shape of a kidney-shaped hole, and the area of the ventilation part 33A can be increased as much as possible while ensuring the strength of the crossbeam 33.

[0103] The ventilation parts 331 can be provided in multiple numbers. Compared with the area of each ventilation part 33A, the influence on the strength is relatively small.

[0104] In some embodiments, flanges 34 are provided at the edges of the support beam 31, the cross beam 33 and the motor mounting plate 32, and the flanges 34 extend in the direction close to the fan 40, so that the direction of the flanges is the same as the direction of the air flow.

[0105] Due to the blocking effect of the motor bracket 30, eddy currents will be generated after the air flow passes through the motor bracket 30. The eddy currents continue to flow and impact the surface of the blades of the fan 42, which will cause an increase in the interaction between the fan 42 and the air flow, and further cause an increase in noise. In this application, the direction of the flange 34 is set to be the same as the direction of the air flow, which can reduce the generation of eddy currents, thereby reducing noise.

[0106] According to an embodiment of the present application, the motor bracket 30 further includes an upper support plate 35 and a lower support plate 36. The upper support plate 35 is connected to the upper end of the support beam 31, and the lower support plate 36 is connected to the lower end of the support beam 31.

[0107] The upper support plate 35 extends from the upper end of the support beam 31 in the direction away from the outdoor heat exchanger 20. Define the end of the upper support plate 35 connected to the support beam 31 as the rear end, and the end of the upper support plate 35 away from the support beam 31 as the front end. The front end of the upper support plate 35 is connected to the front side plate of the housing 10.

[0108] Refer to Figure 4 and Figure 6 , a first reinforcing rib 351 can be provided on the upper support plate 35. The setting of the first reinforcing rib 351 can strengthen the strength of the upper support plate 35 and reduce the vibration of the upper support plate 35.

[0109] The first reinforcing rib 351 is formed by the partial upward or downward protrusion of the upper support plate 35.

[0110] In this embodiment, only the first reinforcing rib 351 is added to the upper support plate 35, and the overall structure of the upper support plate 35 is not changed, which has the advantages of simple structure and low cost.

[0111] A folded edge 37 extending backward is connected to the rear end of the upper support plate 35, and the folded edge 37 is stuck on the upper end of the outdoor heat exchanger 20, which can enhance the connection stability of the motor bracket 30.

[0112] The lower support plate 36 extends from the lower end of the support beam 31 in the direction away from the outdoor heat exchanger 20. The lower support plate 36 is connected to the bottom plate 12 of the housing 10.

[0113] A second reinforcing corrugation 361 is provided on the lower support plate 36. The provision of the second reinforcing corrugation 361 can improve the strength of the lower support plate 36 and effectively prevent the shaking of the motor bracket 30 caused during the operation of the fan 40.

[0114] The second reinforcing corrugation 361 is formed by a part of the lower support plate 36 protruding upward or downward.

[0115] As can be seen from the above, in the embodiment of the present application, the distance H1 from the center of the first cross beam 331 to the center of the motor mounting plate 32 and the distance H3 from the center of the motor mounting plate 32 to the top end of the motor bracket 30 satisfy: H1 / H3≥0.45, which can ensure that the distance from the first cross beam 331 to the motor mounting plate 32 is not too small, avoiding the large-scale low-speed area caused by the convergence of the two low-speed eddy current areas flowing through the motor mounting plate 32 and flowing through the first cross beam 331, thereby improving the air supply volume of the whole machine; and since the range of the low-speed area is reduced, the coupling of the low-speed area and the high-speed flow near the fan 42 can be avoided, thereby reducing the air supply noise.

[0116] In addition, H1 / H3≤0.75 can avoid the influence of the first cross beam 331 on the air field uniformity and ensure the air supply volume.

[0117] In addition, the relationship between the width H2 of the first cross beam 331 and H3 satisfies: H2 / H3≥0.09, which can ensure that the width of the first cross beam 331 is not too small, so as to ensure the structural strength of the first cross beam 33, and ensure the stability of the two support beams 31 through the first cross beam 331, avoiding the problem of noise deterioration caused by the swing of the support beam 31 accompanying the rotation of the fan 40.

[0118] In addition, H2 / H3≤0.11 can ensure that the width of the first cross beam 331 is not too large, thereby avoiding the problem of air volume reduction caused by the first cross beam 331 blocking the air inlet path.

[0119] In addition, the distance H6 from the center of the motor mounting plate 32 to the bottom end of the motor bracket 30 and H3 satisfy: H3 / H6≥1.02, which can ensure the stability of the connection between the bottom of the motor bracket 30 and the housing 10, thereby avoiding the increase of noise risk.

[0120] In addition, H3 / H6≤1.05 can ensure that the fan 42 and the motor 41 are located in the middle of the housing 10, thereby ensuring the air supply uniformity and heat exchange capacity.

[0121] In addition, the relationship between the distance H4 from the center of the second cross beam 332 to the center of the motor mounting plate 32 and H6 satisfies: H4 / H6 ≥ 0.4, which can ensure that the distance from the second cross beam 332 to the motor mounting plate 32 is not too small, avoiding the large-scale low-speed area caused by the convergence of two low-speed eddy current areas flowing through the motor mounting plate 32 and the second cross beam 332, and improving the air supply volume of the whole machine; and since the range of the low-speed area is reduced, the coupling between the low-speed area and the high-speed flow near the fan 42 can be avoided, thereby reducing the air supply noise.

[0122] In addition, H4 / H6 ≤ 0.6, which can avoid the influence of the second cross beam 332 on the air field uniformity and ensure the air supply volume.

[0123] In addition, the relationship between the width H5 of the second cross beam 332 and H6 satisfies: H5 / H6 ≥ 0.09, which can ensure that the width of the second cross beam 332 is not too small, so as to ensure the structural strength of the second cross beam 332 and the stability of the two support beams 31 through the second cross beam 332, and avoid the problem of noise deterioration caused by the swing of the support beam 31 accompanying the rotation of the fan 40.

[0124] In addition, H5 / H6 ≤ 0.11, which can ensure that the width of the second cross beam 332 is not too large, thereby avoiding the problem of air volume reduction caused by the second cross beam 332 blocking the air inlet path.

[0125] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0126] For the sake of convenience of explanation, the above description has been made in combination 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. According to the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are for better explaining the principles and practical applications, so that those skilled in the art can better use the embodiments and various different modified embodiments suitable for specific use considerations.

Claims

1. An outdoor unit of an air conditioner, characterized in that, Comprising: A housing; An outdoor heat exchanger disposed within the housing; A fan disposed on the air outlet side of the outdoor heat exchanger for driving air flow; A motor bracket connected to the housing, the motor bracket comprising: A motor mounting plate to which the fan is connected; Two support beams respectively connected to both sides of the motor mounting plate; A first cross beam connected between the two support beams, the first cross beam being disposed above the motor mounting plate; Wherein, in a plane projected parallel to the plane of the motor mounting plate, the distance from the center of the first cross beam to the center of the motor mounting plate is H1, and the distance from the center of the motor mounting plate to the top end of the motor bracket is H3, and H1 / H3 ≥ 0.

45.

2. The air conditioner outdoor unit according to claim 1, characterized in that, H1 / H3 ≤ 0.

75.

3. The air conditioner outdoor unit according to claim 1, characterized in that, The width of the first cross beam is H2, and 0.09 ≤ H2 / H3 ≤ 0.

11.

4. The air conditioner outdoor unit according to claim 1, characterized in that, The distance from the center of the motor mounting plate to the bottom end of the motor bracket is H6, and 1.02 ≤ H3 / H6 ≤ 1.

05.

5. The air conditioner outdoor unit according to claim 4, characterized in that, The motor bracket further comprises: A second cross beam connected between the two support beams, the second cross beam being disposed below the motor mounting plate; The distance from the center of the second cross beam to the center of the motor mounting plate is H4, and H4 / H6 ≥ 0.

4.

6. The air conditioner outdoor unit according to claim 5, characterized in that, H4 / H6 ≤ 0.

6.

7. The air conditioner outdoor unit according to claim 5, characterized in that, The width of the second cross beam is H5, and 0.09 ≤ H5 / H6 ≤ 0.

11.

8. The air conditioner outdoor unit according to claim 1, wherein, The support beams extend linearly in the height direction.

9. An outdoor unit of an air conditioner, characterized in that, Comprising: A housing; An outdoor heat exchanger disposed within the housing; A fan disposed on the air outlet side of the outdoor heat exchanger for driving air flow; A motor bracket connected to the housing, the motor bracket comprising: A motor mounting plate to which the fan is connected; Two support beams respectively connected to both sides of the motor mounting plate; At least one cross beam connected between the two support beams, the cross beam being spaced apart from the motor mounting plate; When the cross beam is located above the motor mounting plate, the cross beam is the first cross beam; in a plane projected parallel to the plane of the motor mounting plate, the distance from the center of the first cross beam to the center of the motor mounting plate is H1, and the distance from the center of the motor mounting plate to the top end of the motor bracket is H3, and H1 / H3 ≥ 0.45; When the cross beam is located below the motor mounting plate, the cross beam is the second cross beam; in a plane projected parallel to the plane of the motor mounting plate, the distance from the center of the second cross beam to the center of the motor mounting plate is H4, and the distance from the center of the motor mounting plate to the bottom end of the motor bracket is H6, and H4 / H6 ≥ 0.

4.

10. The air conditioner outdoor unit according to claim 9, characterized in that, A plurality of ventilation portions arranged at intervals are provided on the cross beam for air circulation.

Images