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 machine shell, an air inlet and an air outlet, the outdoor heat exchanger is arranged in the machine shell corresponding to the air inlet; the outdoor fan is arranged between the outdoor heat exchanger and the air outlet and used for blowing air subjected to heat exchange through the outdoor heat exchanger to the air outlet, the outdoor fan comprises a fan and a motor, and a connecting part is arranged on the motor; the motor support is used for installing the motor, and the end of the motor support is connected with the machine shell; the air conditioner outdoor unit further comprises a first supporting plate connected to the side, facing the motor support, of the connecting part, and a second supporting plate connected to the side, facing the motor support, of the connecting part. The second supporting plate is connected to the side, facing the first supporting plate, of the motor support, and the second supporting plate and the first supporting plate are separated by a vibration reduction piece. The air conditioner outdoor unit can reduce vibration 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 appropriately controls indoor air for use purposes and is a device for adjusting the temperature, humidity, air cleanliness, or air flow of indoor air. An air conditioner generally includes an indoor unit of the air conditioner and an outdoor unit of the air conditioner. Among them, the outdoor unit of the air conditioner includes a housing, an outdoor heat exchanger, an outdoor fan, a motor bracket, etc. The motor bracket is connected to the housing, and the motor of the outdoor fan is connected to the motor bracket.

[0003] Nowadays, air conditioning equipment on the market requires low vibration and low noise, and has high reliability in use to meet people's requirements for a quiet and comfortable environment in work and life. The motor speed of the top-outlet outdoor unit is several hundred to one thousand revolutions per minute. The motor and the motor bracket, the motor bracket and the frame structure of the outdoor unit, etc. are all rigidly connected. The motor speed is relatively fast, which is likely to generate structural vibration, generate low-frequency vibration noise, and even resonance occurs between the motor bracket and the motor. The large vibration amount causes the bracket to fatigue and break. Utility Model Content

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

[0005] The outdoor unit of the air conditioner includes: a housing, on which an air inlet and an air outlet are provided; an outdoor heat exchanger, which is arranged in the housing corresponding to the air inlet; an outdoor fan, which is arranged between the outdoor heat exchanger and the air outlet and is used to blow the air heated by the outdoor heat exchanger to the air outlet. The outdoor fan includes a fan and a motor, and a connecting part is arranged on the motor; and a motor bracket, which is used to install the motor, and the end of the motor bracket is connected to the housing;

[0006] Among them, the outdoor unit of the air conditioner further includes: a first support plate, which is connected to the side of the connecting part facing the motor bracket; a second support plate, which is connected to the side of the motor bracket facing the first support plate, and the second support plate and the first support plate are separated by a vibration damping member.

[0007] Through the arrangement of the first support plate and the second support plate, the stress of the entire motor bracket can be dispersed; a vibration damping member is arranged between the first support plate and the second support plate, which reduces the transmission of the vibration of the outdoor fan to the motor bracket, reduces the structural vibration from the transmission path, and reduces the noise of the whole machine.

[0008] In some embodiments, the second support plate and the first support plate are connected by a first fastener; the outdoor unit of the air conditioner further includes: a first rubber pad sleeved on the first fastener and located between the first support plate and the second support plate; a second rubber pad sleeved between the head of the first fastener and the first support plate or sleeved between the head of the first fastener and the second support plate.

[0009] The first support plate, the second support plate, the first rubber pad, and the second rubber pad form a two-stage vibration damping structure. Due to the effect of the rubber pad, the vibration transmission from the outdoor fan to the motor bracket is reduced.

[0010] In some embodiments, in the projection of the second support plate, the first fastener does not intersect with the motor bracket.

[0011] In some embodiments, the first support plate and the connecting portion are connected by a second fastener, and the vibration damping member is disposed adjacent to the second fastener.

[0012] In some embodiments, the first support plate and the connecting portion are connected by a second fastener, and the second support plate is provided with an avoidance hole for avoiding the second fastener, and there is a radial gap between the avoidance hole and the second fastener.

[0013] In some embodiments, the length direction of the connecting portion is parallel to the length direction of the motor bracket.

[0014] In some embodiments, the motor bracket includes two spaced-apart support rods, and the ends of the support rods are provided with tongues extending downward; the support frame of the casing is provided with slots, and the tongues are adapted to the slots.

[0015] In some embodiments, the motor bracket includes two spaced-apart support rods, and the middle of the bottom ends of the support rods is provided with a reinforcing portion extending outward.

[0016] In some embodiments, the middle of the second support plate is provided with a second through groove for avoiding the end of the motor, and the edge of the second through groove is provided with a wind ring flange extending toward the air inlet side.

[0017] In some embodiments, the edge of the second support plate parallel to the width direction of the motor bracket is provided with a side line flange extending toward the air outlet side. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 and Figure 2 shows a perspective view of an outdoor unit of an air conditioner according to some embodiments;

[0019] Figure 3 shows a cross-sectional view of an outdoor unit of an air conditioner according to some embodiments;

[0020] Figure 4 shows an internal structure diagram of an outdoor unit of an air conditioner according to some embodiments;

[0021] Figure 5 Shows a perspective view of a motor bracket and a motor of an outdoor unit of an air conditioner according to some embodiments;

[0022] Figure 6 Shows a top view of a motor bracket and a motor of an outdoor unit of an air conditioner according to some embodiments;

[0023] Figure 7 Shows an exploded view of a motor bracket and a motor of an outdoor unit of an air conditioner according to some embodiments;

[0024] Figure 8 Shows a cross-sectional view of a first support plate and a second support plate at the connection of an outdoor unit of an air conditioner according to some embodiments;

[0025] Figure 9 Shows a perspective view of a motor and a first support plate of an outdoor unit of an air conditioner according to some embodiments;

[0026] Figure 10 Shows a perspective view of a first support plate of an outdoor unit of an air conditioner according to some embodiments;

[0027] Figure 11 Shows a perspective view of a second support plate of an outdoor unit of an air conditioner according to some embodiments;

[0028] Figure 12 Shows a perspective view of a motor bracket and a support frame body of an outdoor unit of an air conditioner according to some embodiments;

[0029] Figure 13 Shows a perspective view of a support frame body of an outdoor unit of an air conditioner according to some embodiments.

[0030] In the above figures, 10, housing; 11, support bottom plate; 12, frame column; 13, grille plate; 14, cover plate; 15, fan cover plate; 16, support frame body; 161, first plate part; 162, second plate part; 163, slot; 17, air inlet; 18, air outlet; 20, electrical box; 30, compressor; 40, outdoor heat exchanger; 50, outdoor fan; 51, motor; 511, connection part; 512, positioning column; 52, fan; 53, first support plate; 531, first insertion hole; 532, first through groove; 533, limiting hole; 534, mounting hole; 60, air guide ring; 70, motor bracket; 701, support rod; 71, second support plate; 711, second insertion hole; 712, avoidance hole; 713, second through groove; 714, air ring flange; 715, side flange; 72, strengthening part; 73, fixing part, 74, tongue; 80, rubber pad; 81, first rubber pad; 82, second rubber pad; 91, first fastener; 92, second fastener; 93, third fastener. Detailed Implementation Manner

[0031] To make the objectives 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.

[0032] 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 accompanying drawings. These 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. Therefore, it should not be construed as a limitation to this application.

[0033] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, 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.

[0034] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In this application, the air conditioner performs a refrigeration cycle 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.

[0036] 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.

[0037] The expansion valve expands the high-temperature and high-pressure liquid-phase refrigerant 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 the low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration effect by using the latent heat of vaporization of the refrigerant for heat exchange with the material to be cooled. Throughout the cycle, the air conditioner can adjust the temperature of the indoor space.

[0038] 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 the indoor heat exchanger, and the expansion valve can be provided in the indoor unit or the outdoor unit.

[0039] The indoor heat exchanger and the outdoor heat exchanger are used as condensers or evaporators. When the indoor heat exchanger is used as a condenser, the air conditioner functions as a heater in the heating mode. When the indoor heat exchanger is used as an evaporator, the air conditioner functions as a cooler in the cooling mode.

[0040] Refer to Figures 1 to 4 As shown in

[0041] The housing 10 includes a support bottom plate 11 and frame columns 12 connected to the four corners of the support bottom plate 11. The frame columns 12 play a role in supporting the entire outdoor unit of the air conditioner.

[0042] The side surface of the housing 10 is provided with a grille plate 13 connected to the frame columns 12. The grille holes on the grille plate 13 form an air inlet 17.

[0043] A plate may not be provided between the frame columns 12. In this way, the space between the frame columns 12 forms an air inlet 17.

[0044] The side surface of the housing 10 is provided with a cover plate 14 connected to the frame columns 12, which is used to connect the electrical box 20 or cover the internal components of the housing 10.

[0045] In some embodiments, the rear side surface of the housing 10 does not have the cover plate 14 and the grille plate 13; the left side surface, the left part of the front side surface, and the rear part of the right side surface of the housing 10 are provided with the grille plate 13. Therefore, the rear side, the left side, the left part of the front side, and the rear part of the right side of the housing 10 form an air inlet 17 for allowing outdoor air to enter the housing 10.

[0046] The right part of the front side surface and the front part of the right side surface of the housing 10 are provided with the cover plate 14. Among them, the cover plate 14 in the front part of the right side surface can be integrally formed with the grille plate 13 in its rear part.

[0047] The electrical box 20 can be connected to the front cover plate 14. Components related to the refrigerant such as the compressor 30 can be connected to the support bottom plate 11. The right cover plate 14 can cover the electrical box 20, the compressor 30, etc., to play a protective role.

[0048] According to an embodiment of the present application, a blower cover plate 15 connected between the frame columns 12 is provided at the upper part of the side surface of the housing 10. The top end of the blower cover plate 15 is open to form an air outlet 18 for discharging the air inside the housing 10.

[0049] A support frame body 16 is provided at the bottom of the blower cover plate 15, and the support frame body 16 is connected to the frame column 12.

[0050] The air conditioner outdoor unit includes an outdoor heat exchanger 40, and the outdoor heat exchanger 40 is arranged inside the housing 10 corresponding to the air inlet 17. The outdoor heat exchanger 40 is used to absorb heat from the air introduced into the air inlet 17 or transfer heat to the air.

[0051] In the vertical direction, the outdoor heat exchanger 40 is located between the support bottom plate 11 and the support frame body 16.

[0052] The air conditioner outdoor unit includes an outdoor blower 50. The outdoor blower 50 is arranged inside the blower cover plate 15 corresponding to the air outlet 18, and the outdoor blower 50 is used to blow out air. Figure 3 The arrow in [Figure] indicates the air flow direction. Under the action of the outdoor blower 50, the air can flow from the air inlet 17, through the outdoor heat exchanger 40 to the air outlet 18. The outdoor blower 50 can be an axial flow blower.

[0053] Specifically, the outdoor blower 50 is located between the outdoor heat exchanger 40 and the air outlet 18.

[0054] The outdoor blower 50 includes a motor 51 and a fan 52. The motor 51 serves as a power source for the rotation of the fan 52, and the fan 52 is connected to the motor 51 to rotate under the drive of the motor 51.

[0055] A wind guide ring 60 is sleeved on the outer periphery of the fan 52 for guiding the air flow blown out by the fan 52. The wind guide ring 60 can be connected to the upper end of the support frame body 16.

[0056] Refer to Figures 5 to 8 , a connecting portion 511 extending laterally outward is provided on the motor 51 for realizing the installation of the motor 51.

[0057] The air conditioner outdoor unit includes a motor bracket 70. The motor bracket 70 is connected to the support frame body 16 on the housing 10 for supporting the motor 51 of the outdoor blower 50.

[0058] The motor support 70 is rod-shaped. Exemplarily, the motor support 70 extends in the front-rear direction. The front end of the motor support 70 is connected to the support frame 16 at the front side of the housing 10 by screws, and the rear end of the motor support 70 is connected to the support frame 16 at the rear side of the housing 10 by screws.

[0059] The outdoor unit of the air conditioner includes a first support plate 53. The first support plate 53 is plate-shaped and is connected to the side of the connecting portion 511 facing the motor support 70.

[0060] The outdoor unit of the air conditioner includes a second support plate 71. The second support plate 71 is plate-shaped and is connected to the side of the motor support 70 facing the connecting portion 511.

[0061] The first support plate 53 and the second support plate 71 are separated by a vibration damping member to reduce the vibration transmission from the first support plate 53 to the second support plate 71.

[0062] The vibration damping member can be an elastic member such as a spring or a flexible member such as rubber.

[0063] In the following, the vibration damping member is taken as an example of a rubber pad 80 for introduction:

[0064] A rubber pad 80 is provided at the connection between the first support plate 53 and the second support plate 71. A first fastener 91 passes through the rubber pad 80 to connect the first support plate 53 and the second support plate 71.

[0065] The rubber pad 80 can separate the first support plate 53 and the second support plate 54. The vibration generated when the outdoor fan 60 operates is transmitted to the rubber pad 80 through the first support plate 53, and the rubber pad 80 can significantly consume the vibration.

[0066] In the embodiments provided by the present application, due to the vibration isolation effect of the rubber pad 80, the vibration transmission from the motor 51 and the fan 52 to the motor support 70 is reduced, the structural vibration is reduced from the transmission path, and the overall noise of the machine is reduced.

[0067] If the first support plate 53 and the second support plate 71 are omitted, the connecting portion 511 of the motor 51 is directly connected to the motor support 70, and a rubber pad 80 is provided between the connecting portion 511 and the motor support 70; or, the second support plate 71 is omitted, the first support plate 53 is connected to the motor support 70, and a rubber pad 80 is provided between the first support plate 53 and the motor support 70. In this case, the connection position between the motor 51 and the motor support 70 is on the motor support 70. Considering reducing wind resistance, the motor support 70 is usually rod-shaped and has a narrow width. On the one hand, the stress on the motor support 70 will be relatively concentrated, and the motor support 70 is more likely to break; on the other hand, due to the narrow width of the motor support 70, the size of the rubber pad 80 is limited, and the vibration damping effect will also be unsatisfactory.

[0068] Therefore, in the embodiments provided in the present application, through the arrangement of the first support plate 53 and the second support plate 71, the stress of the entire motor bracket 70 can be dispersed, the size and quantity of the rubber pad 80 are not limited, and the vibration damping effect can be ensured.

[0069] In some embodiments, a first insertion hole 531 is provided on the first support plate 53, and a second insertion hole 711 is provided on the second support plate 71.

[0070] The rubber pad 80 includes a first rubber pad 81. The first rubber pad 81 is disposed between the first support plate 53 and the second support plate 71 to separate the first support plate 53 and the second support plate 71.

[0071] The rubber pad 80 includes a second rubber pad 82. The first support plate 53 is sandwiched between the second rubber pad 82 and the first rubber pad 81.

[0072] The first fastener 91 sequentially passes through the second rubber pad 82, the first insertion hole 531 of the first support plate 53, the first rubber pad 81, and the second insertion hole 711 of the second support plate 71.

[0073] The first fastener 91 may be a bolt. The second rubber pad 82 is located between the head of the bolt and the first support plate 53. By utilizing the vibration isolation effect of the second rubber pad 82, the vibration transmission from the first support plate 53 to the bolt can be weakened.

[0074] The first support plate 53, the second support plate 71, and the rubber pad 80 form a two - stage vibration damping structure. Due to the function of the rubber pad 80, the vibration transmitted from the motor 51 and the fan 52 to the motor bracket 70 is reduced.

[0075] In the above - mentioned embodiment, the second rubber pad 82 is located on the upper side of the first support plate 71. In other embodiments, the rubber pad 80 may be disposed on the lower side of the second support plate 71. That is, the first rubber pad 81 is located between the first support plate 53 and the second support plate 71, the second support plate 71 is sandwiched between the second rubber pad 82 and the first rubber pad 81, and the bolt sequentially passes through the second rubber pad 82, the second insertion hole 711 of the second support plate 71, the first rubber pad 81, and the first insertion hole 531 of the first support plate 53. In this embodiment, both between the first support plate 53 and the second support plate 71 and between the head of the bolt and the second support plate 71 are separated by the rubber pad 80.

[0076] According to the embodiments of the present application, the first support plate 53 and the second support plate 71 are structural members made of hot - dip galvanized sheet, the material is DC - 51D, and the thickness range is between 2 millimeters and 3 millimeters.

[0077] The connecting part 511 on the electric motor 51 abuts against the first support plate 53. The second fastener 92 passes through the connecting part 511 and the first support plate 53, thereby tightly connecting the connecting part 511 and the first support plate 53. Specifically, there may be four connecting parts 511 symmetrically arranged in the front-back direction and left-right direction to ensure the firm connection between the first support plate 53 and the electric motor 51.

[0078] The first support plate 53 is provided with mounting holes 534, and the second fastener 92 can be a bolt, which passes through the mounting holes 534 of the first support plate 53.

[0079] Combined Figure 11 , if the distance between the first support plate 53 and the second support plate 71 is relatively small, the tail of the second fastener 92 will extend downward to the second support plate 71. In order to avoid the second fastener 92, the second support plate 71 is provided with an avoidance hole 712.

[0080] There is a radial gap between the avoidance hole 712 and the second fastener 92, which is used to prevent the second fastener 92 from touching the second support plate 71 at the avoidance hole 712 when the first support plate 53 vibrates following the electric motor 51.

[0081] If the distance between the first support plate 53 and the second support plate 71 is relatively large, and there is still a distance between the tail end of the second fastener 92 and the second support plate 71, then the second support plate 71 may not be provided with an avoidance hole 712.

[0082] In some embodiments, if the length direction of the connecting part 511 is perpendicular to the length direction of the motor bracket 70. In order to prevent the second fastener 92 between the connecting part 511 and the first support plate 53 from corresponding to the motor bracket 70, it is necessary that the interval space between the two support rods 701 in the motor bracket 70 is greater than the distance between the two second fasteners 92 on the connecting part 511. Thus, the distance between the two support rods 701 is increased.

[0083] Therefore, in the embodiments of the present application, the length direction of the connecting part 511 can be set parallel to the length direction of the motor bracket 70. This can shorten the interval distance between the two support rods 701, making the structure at the motor bracket 70 more compact.

[0084] According to the embodiments of the present application, a plurality of first insertion holes 531 are arranged at intervals on the first support plate 53. Among the plurality of first insertion holes 531, at least some of the first insertion holes 531 are arranged adjacent to the second fastener 92. Since a rubber pad 80 is connected at the first insertion hole 531, it is equivalent to at least some of the rubber pads 80 being arranged adjacent to the second fastener 92.

[0085] Exemplarily, there are at least four groups of rubber pads 80. The four groups of rubber pads 80 are arranged in one-to-one correspondence with the four second fasteners 92. The rubber pads 80 can be located outside the second fasteners 92 in the width direction.

[0086] Exemplarily, there are at least eight groups of rubber pads 80. Every two groups of rubber pads 80 are arranged adjacent to one second fastener 92. The two groups of rubber pads 80 are respectively located on both sides of the second fastener 92 in the width direction.

[0087] Since the vibration transfer position from the motor 51 to the first support plate 53 mainly occurs at their connection, that is, at the second fastener 92, in this application, rubber pads 80 are arranged near the second fastener 92, so that the vibration at the first support plate 53 can be quickly consumed by the rubber pads 80, improving the vibration damping effect.

[0088] In some embodiments, referring to Figure 9 and Figure 10 , a limiting hole 533 is provided on the first support plate 53. Correspondingly, a positioning post 512 extending downward is provided on the connecting portion 511. The positioning post 512 is adapted to be fitted in the limiting hole 533, and the installation and positioning of the motor 51 relative to the first support plate 53 can be realized, thereby improving the assembly efficiency of the motor 51 and the first support plate 53.

[0089] If the inner diameters of the installation hole 534 and the limiting hole 533 are the same, or the inner diameter of the installation hole 534 is larger than that of the limiting hole 533, then the positioning post 512 may be misinserted into the installation hole 534, causing inconvenience to the assembly. Therefore, in the embodiments of this application, the inner diameter of the limiting hole 533 can be larger than that of the installation hole 534. In this way, the limiting hole 533 and the installation hole 534 can be distinguished to prevent the positioning post 512 from being misinstalled into the installation hole 534.

[0090] According to the embodiments of this application, referring to Figure 5 and Figure 6 , on the projection of the second support plate 71, there is an area on the second support plate 71 that coincides with the motor bracket 70 and does not coincide with the first support plate 53. The third fastener 93 connects the second support plate 71 and the motor bracket 70 at this area.

[0091] The first support plate 53 can be in the shape of an octagonal plate. The second support plate 71 can be in the shape of a rectangular plate. The four corner portions of the second support plate 71 are located outside the first support plate 53, and the third fasteners 92 can be connected at the four corner portions of the second support plate 71.

[0092] Threaded holes can be provided on the motor bracket 70. The third fastener 93 can be a screw, and the screw passes through the second support plate 71 and is screwed into the threaded holes on the motor bracket 70.

[0093] In some embodiments, referring toFigure 7 The lower end of the motor 51 has a portion protruding from the connecting portion 511.

[0094] A first through groove 532 for avoiding the motor 51 is provided in the middle of the first support plate 53. A second through groove 713 for avoiding the motor 51 is provided in the middle of the second support plate 71.

[0095] The size of the first through groove 532 can be larger than that of the second through groove 713. In this way, the solid area of the first support plate 53 is relatively small, which can reduce the material consumption and the vibration transmission area, and can also reduce the weight of the first support plate 53 and reduce the bearing capacity of the second support plate 71.

[0096] Combined Figure 5 and Figure 11 , a wind ring flange 714 extending towards the air inlet side (downward) can be provided at the edge of the second through groove 713. A side line flange 715 extending towards the air outlet side (upward) is provided at the edge of the second support plate 71 parallel to the width direction of the motor bracket 70.

[0097] The wind ring flange 714 and the side line flange 715 have a guiding effect on the air flow, can improve the air flow path when the air passes through the second support plate 71, reduce the impact of the air flow on the edge of the second support plate 71, and improve the stability performance at the motor bracket 70.

[0098] In some embodiments, referring to Figure 5 , the cross-section of the support rod 701 parallel to the width direction can be in a right-angled "U" shape. The "U" shaped open ends of the two support rods 701 face each other.

[0099] Since components such as the motor 51 are mainly connected to the middle of the motor bracket 70, the middle position bears a relatively large force. In this application, a strengthening portion 72 extending away from the outdoor fan direction (downward) is provided in the middle of the side of the support rod 701 opposite to the second support plate 71 (lower end). The strengthening portion 72 can increase the structural strength of the middle of the motor bracket 70.

[0100] In some embodiments, referring to Figure 12 and Figure 13 , the support frame body 16 includes a first plate portion 161 and a second plate portion 162 connected at an angle. The first plate portion 161 extends horizontally, and the second plate portion 162 extends vertically.

[0101] The lower end of the motor bracket 70 abuts against the upper surface of the first plate portion 161. A fixing portion 73 is provided at the end of the motor bracket 70. The fixing portion 73 abuts against the second plate portion 162.

[0102] Threaded holes can be provided on the fixing part 73, and the screw passes through the second plate part 162 and is screwed into the threaded hole on the fixing part 73 to achieve the firm connection between the motor bracket 70 and the support frame body 16.

[0103] In some embodiments, in combination with Figure 5 and Figure 13 , a tongue 74 extending downward is provided on the fixing part 73, and a slot 163 is provided on the support frame body 16. The tongue 74 is adapted to be within the slot 163 to achieve the positioning between the motor bracket 70 and the support frame body 16 and improve the assembly efficiency.

[0104] During assembly, first insert the tongue 74 of the motor bracket 70 into the slot 163, and then screw to fix the motor bracket 70 and the support frame body 16.

[0105] At the above-mentioned fastener connection points, spring washers are equipped. The material of the spring washer is spring steel. After assembly, the washer is flattened, and its resilience can keep the pressing force and frictional force between the threads, thus achieving anti-loosening.

[0106] The outdoor fan 50, the first support plate 53, the rubber pad 80, the second support plate 71 and the motor bracket 70 constitute the entire motor bracket module. Before assembly on the production line, the entire motor bracket module is pre-installed as a modular component and then assembled to the support frame body 16 by screws to improve the installation efficiency of the outdoor fan 50 on the outdoor unit.

[0107] In a specific application example, the weight of the fan 52 is 3.3 kg, and the weight of the motor 51 is 9.5 kg. The outdoor fan 50 is arranged on the motor bracket 70 through the first support plate 53, the rubber pad 80 and the second support plate 71. After strength checking, the maximum stress of the motor bracket 70 is 7.5 MPa, which is less than the material yield strength and meets the requirements. After modal analysis of the motor bracket module, the natural modes within 100 Hz are obtained. The natural frequency of the first-order mode is 28 Hz (up and down swing), the natural frequency of the second-order mode is 43 Hz (up and down swing), the natural frequency of the third-order mode is 78 Hz (left and right torsion), and there is no natural frequency point between 79 Hz and 100 Hz. The natural frequency is far from the excitation frequencies of the fan 52 and the motor 51, and it is not easy to resonate. Through the combination of the above theory and practice, the strength and vibration noise of each part of the motor bracket module reach the optimal state.

[0108] Perform a blowing noise experiment on the air conditioner outdoor unit of this application, that is, the noise generated when only the outdoor fan 50 is running, and obtain the following table data:

[0109] Fan speed (rpm) Outdoor unit noise dB(A) Transmitted sound from outdoor unit to indoor side dB(A) 660 58.5 9.1 720 61.0 13.2 780 63.1 14.6 840 66.8 18.1 900 67.2 14.1 960 68.9 15.3 1020 70.2 13.8

[0110] It can be seen from the experimental results that the air supply noise of the air conditioner outdoor unit of the present application meets the use requirements; the transmitted sound on the outdoor side is less than 20 dB(A), which also meets the use requirements.

[0111] In the above embodiments, the top air outlet type outdoor unit is used for display. It can be understood that the connection structure between the motor and the motor bracket in the present application is also applicable to the side air outlet type outdoor unit.

[0112] As described above, for the air conditioner outdoor unit according to the embodiment of the present application, due to the vibration isolation effect of the rubber pad 80, the vibration generated by the motor 51 and the fan 52 is reduced from being transmitted to the motor bracket 70, and the structural vibration is reduced from the transmission path, thereby reducing the overall machine noise.

[0113] In addition, by providing the first support plate 53 and the second support plate 71, the stress of the entire motor bracket 70 can be dispersed, and the size and quantity of the rubber pad 80 are not limited, which can ensure the vibration reduction effect.

[0114] In addition, the length direction of the connecting portion 511 is parallel to the length direction of the motor bracket 70. This can shorten the distance between the two support rods 701, making the structure at the motor bracket 70 relatively compact.

[0115] In addition, the air duct flange 714 and the edge line flange 715 on the second support plate 71 have a guiding effect on the air flow, which can improve the air flow path when the air passes through the second support plate 71, reduce the impact of the air flow on the edge of the second support plate 71, and improve the stability performance at the motor bracket 70.

[0116] 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 recorded 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.

[0117] For the sake of convenience of explanation, the above description has been made 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. 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 actual applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. An outdoor unit of an air conditioner, characterized in that, Comprising: A housing, on which an air inlet and an air outlet are provided; An outdoor heat exchanger, which is arranged in the housing corresponding to the air inlet; An outdoor fan, which is arranged between the outdoor heat exchanger and the air outlet and is used to blow the air heat-exchanged by the outdoor heat exchanger towards the air outlet. The outdoor fan includes a fan and a motor, and a connecting portion is provided on the motor; And A motor bracket, which is used to mount the motor, and the end of the motor bracket is connected to the housing; Wherein, the outdoor unit of the air conditioner further includes: A first support plate, which is connected to one side of the connecting portion facing the motor bracket; A second support plate, which is connected to one side of the motor bracket facing the first support plate, and the second support plate and the first support plate are separated by a vibration damping member.

2. The air conditioner outdoor unit according to claim 1, wherein The first support plate and the connecting portion are connected by a second fastener, and the vibration damping member is arranged adjacent to the second fastener.

3. The air conditioner outdoor unit according to claim 1, characterized in that, The first support plate and the connecting portion are connected by a second fastener. An avoidance hole for avoiding the second fastener is provided on the second support plate, and there is a radial gap between the avoidance hole and the second fastener.

4. The air conditioner outdoor unit according to claim 1, characterized in that, The length direction of the connecting portion is parallel to the length direction of the motor bracket.

5. The air conditioner outdoor unit according to claim 1, characterized in that, The motor bracket includes two spaced-apart support rods, and a tongue is provided at the end of the support rod; a slot is provided on the support frame of the housing, and the tongue is adapted to the slot.

6. The air conditioner outdoor unit according to claim 1, characterized in that, The motor bracket includes two spaced-apart support rods, and a reinforcing portion extending outward is provided in the middle of one side of the support rod opposite to the second support plate.

7. The air conditioner outdoor unit according to claim 1, wherein, A second through groove is provided in the middle of the second support plate for avoiding the end of the motor, and a wind ring flange extending towards the air inlet side is provided at the edge of the second through groove.

8. The air conditioner outdoor unit according to claim 1, characterized in that, A side flange extending towards the air outlet side is provided at the edge of the second support plate parallel to the width direction of the motor bracket.

9. An outdoor unit of an air conditioner, characterized in that, Comprising: A housing, on which an air inlet and an air outlet are provided; An outdoor heat exchanger, which is arranged in the housing corresponding to the air inlet; An outdoor fan, which is arranged between the outdoor heat exchanger and the air outlet and is used to blow the air heat-exchanged by the outdoor heat exchanger towards the air outlet. The outdoor fan includes a fan and a motor, and a connecting portion is provided on the motor; And A motor bracket, which is used to mount the motor, and the end of the motor bracket is connected to the housing; Wherein, the outdoor unit of the air conditioner further includes: A first support plate, which is connected to one side of the connecting portion facing the motor bracket; A second support plate, which is connected to one side of the motor bracket facing the first support plate, and the second support plate and the first support plate are connected by a first fastener; A first rubber pad, which is sleeved on the first fastener and is located between the first support plate and the second support plate; A second rubber pad, which is sleeved between the head of the first fastener and the first support plate, or sleeved between the head of the first fastener and the second support plate.

10. The air conditioner outdoor unit according to claim 9, characterized in that, In the projection of the second support plate, the first fastener does not intersect with the motor bracket.

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