Air conditioner outdoor unit and control method thereof

Abstract

The invention discloses an outdoor unit of an air conditioner and a control method of the outdoor unit. The heat exchanger is arranged in the machine shell; the fan assembly is arranged in the machine shell; the compressor is arranged in the machine shell; the air suction pipe is connected with an air return port of the compressor; the exhaust pipe is connected with an exhaust port of the compressor; the air conditioner outdoor unit further comprises a vibration reduction device, the vibration reduction device comprises a vibration reduction ring, a plurality of elastic balls are contained in the vibration reduction ring, and the vibration reduction ring is arranged on the peripheral side of the air suction pipe and / or the exhaust pipe in a sleeving mode; one end of the elastic piece is connected with the base, the other end of the elastic piece is connected with the vibration reduction ring, and the elastic piece can be lengthened or compressed. Vibration of the air suction pipe or the exhaust pipe is restrained through the vibration reduction ring and the elastic piece, timely correction after vibration of the exhaust pipe and the air suction pipe exceeds the standard can be achieved, and the service life of a product is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to an outdoor unit of an air conditioner and its control method. Background Technology

[0002] The compressor piping is the weakest point of the outdoor unit of an air conditioner, and it is often prone to failure, leading to a reduction in the product's lifespan. The main type of failure in the outdoor unit piping is pipe rupture, which is primarily caused by the piping being subjected to excessive vibration for extended periods.

[0003] Pipelines are inherently elastic systems with natural frequencies. The main causes of pipeline vibration are pulsating vibrations and imbalances in rotating equipment. Mechanical resonance in pipelines typically occurs when the excitation frequency is equal to or close to a certain natural frequency. Vibrations caused by imbalances in rotating equipment are transmitted to connected pipelines. If the frequency of this transmitted vibration is close to the natural frequency of the pipeline, it will cause mechanical resonance in the pipeline system, directly leading to damage to the pipes and connections.

[0004] Compressors have variable frequency properties and operate in a wide frequency range of 10-100Hz, resulting in a variety of vibration sources at the compressor output. If a piping scheme is to meet the product's vibration / stress requirements, frequency limiting is required for compressor operating frequencies that cannot meet the requirements. Therefore, compressors may experience frequency hopping during actual operation, which can affect the cooling / heating comfort of the air conditioner. Summary of the Invention

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an outdoor unit for an air conditioner that uses vibration damping rings and elastic elements to suppress the vibration of the intake or exhaust pipe, enabling timely correction of excessive vibration in the intake and exhaust pipes and ensuring the product's service life.

[0006] An outdoor unit of an air conditioner according to a first aspect of the present invention includes: a housing having an outdoor air inlet and an outdoor air outlet; a heat exchanger disposed within the housing; a fan assembly disposed within the housing, wherein airflow from outside the housing is introduced into the housing through the outdoor air inlet via the fan assembly, and is discharged outward through the outdoor air outlet via heat exchange through the heat exchanger; and a compressor disposed within the housing. The outdoor unit further includes: an intake pipe connected to the return air port of the compressor; and an exhaust pipe connected to the exhaust port of the compressor. The outdoor unit also includes: a vibration damping device comprising: a vibration damping ring containing a plurality of elastic spheres, the vibration damping ring being sleeved on the outer periphery of the intake pipe and / or the exhaust pipe; and an elastic element, one end of which is connected to the base and the other end of which is connected to the vibration damping ring, the elastic element being stretchable or compressible.

[0007] The outdoor unit of the air conditioner according to the embodiment of the present application can suppress the vibration of the suction pipe or the exhaust pipe by the damping ring and the elastic member, and can correct the vibration of the suction pipe or the exhaust pipe in time when the vibration exceeds the standard, thereby ensuring the service life of the product.

[0008] According to some embodiments of the present application, the damping device further comprises a support connected to the base on one side and connected to one end of the elastic member on the other side.

[0009] According to some embodiments of the present application, the damping device comprises a piston rod connected to the support on the lower side and connected to one end of the elastic member on the upper side.

[0010] According to some embodiments of the present application, the damping device further comprises a driving member in transmission connection with the piston rod, the driving member being configured to drive the piston rod to slide in the height direction; and a controller in electrical connection with the driving member, the controller being configured to control the operation of the driving member.

[0011] According to some embodiments of the present application, the damping device comprises a first plate connected to the upper side of the piston rod on the lower side and connected to one end of the elastic member on the upper side; and / or, the damping device further comprises a second plate connected to the other end of the elastic member on the lower side and connected to the damping ring on the upper side.

[0012] According to some embodiments of the present application, the damping ring comprises at least two accommodating cavities arranged around the circumferential side of the damping ring and not communicated with each other, and a plurality of elastic balls are accommodated in any of the accommodating cavities.

[0013] According to some embodiments of the present application, the damping ring comprises a first ring part provided with at least one accommodating cavity; and a second ring part provided with at least one accommodating cavity, one end of the second ring part being connected to one end of the first ring part and the other end of the second ring part being arranged opposite to the other end of the first ring part.

[0014] According to the control method of the outdoor unit of the air conditioner according to the second aspect of the embodiment of the present application, the control method comprises: obtaining motion parameters of the current suction pipe or exhaust pipe in a plurality of directions, and calculating the maximum value of the difference of the plurality of motion parameters; obtaining phase values of the current suction pipe or exhaust pipe in the plurality of directions, and calculating the phase difference values of the plurality of directions; when the maximum value is greater than a first preset value and at least one of the phase difference values is equal to a second preset value, controlling the damping device to damp the suction pipe or the exhaust pipe; wherein the plurality of directions include a first direction and a second direction perpendicular to the radial direction of the suction pipe and the exhaust pipe, and an axial direction.

[0015] According to some embodiments of the present application, the control method further comprises: when the maximum value is less than the first preset value, controlling the damping device to be inaction.

[0016] According to some embodiments of the present application, the control method further comprises: when the maximum value is greater than the first preset value and the phase difference value is not equal to a second preset value, controlling the damping device to be inaction.

[0017] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0019] Figure 1 is a schematic diagram of internal structure of an air conditioner outdoor unit according to an embodiment of the present application in one direction;

[0020] Figure 2 is a schematic diagram of internal structure of an air conditioner outdoor unit according to an embodiment of the present application in another direction;

[0021] Figure 3 is a schematic diagram of internal structure of an air conditioner outdoor unit according to an embodiment of the present application in still another direction;

[0022] Figure 4 is a partial schematic diagram A of Figure 3

[0023] Figure 5 is a schematic diagram of connection of a damping device and a suction pipe according to an embodiment of the present application;

[0024] Figure 6 is a schematic diagram of structure of a damping device according to an embodiment of the present application in one direction;

[0025] Figure 7 is a schematic diagram of structure of a damping device according to an embodiment of the present application in another direction;

[0026] Figure 8 is a schematic diagram of structure of a damping device according to an embodiment of the present application in still another direction;

[0027] Figure 9 is a schematic diagram of structure of a damping device according to an embodiment of the present application in yet another direction;

[0028] Figure 10 is a sectional view of a damping device according to an embodiment of the present application;

[0029] Figure 11 ​is a control logic diagram of the control method according to the embodiment of the present application.

[0030] Reference signs:

[0031] 100, an air conditioner outdoor unit;

[0032] 11, a base; 12, a heat exchanger; 13, a fan assembly; 14, a compressor; 15, a suction pipe;

[0033] 20, a damping device; 21, a damping ring; 211, a first ring part; 212, a second ring part; 213, an opening; 214, a containing cavity; 22, an elastic member; 23, a support; 24, a piston rod; 25, a first plate member; 26, a second plate member. DETAILED DESCRIPTION

[0034] The embodiments of the present application are described in detail below, the embodiments described with reference to the accompanying drawings are exemplary, the embodiments of the present application are described in detail below.

[0035] The embodiments of the present application are described in detail below, the embodiments described with reference to the accompanying drawings are exemplary, the embodiments of the present application are described in detail below. Figures 1-11 The air conditioner outdoor unit 100 according to the embodiment of the present application is described below, and the present application also proposes a control method of the above-mentioned air conditioner outdoor unit 100.

[0036] Combined Figures 1-3 As shown in the figure, the air conditioner outdoor unit 100 comprises a casing, a heat exchanger 12, a fan assembly 13 and a compressor 14.

[0037] The casing comprises a base 11 and a shell, the base 11 and the shell are connected, and the base 11 and the shell constitute a containing space for containing the heat exchanger 12, the fan assembly 13 and the compressor 14. The shell is provided with an outdoor air inlet and an outdoor air outlet, that is, the shell has an air outlet for discharging air in the shell and an air inlet for sucking air outside the shell, and the air inlet and the air outlet are arranged at intervals.

[0038] The heat exchanger 12 is arranged in the casing, and the heat exchanger 12 is arranged in the casing. The outdoor air enters the inside of the casing, and the outdoor air can exchange heat with the refrigerant transmitted in the heat exchanger 12. The outdoor air entering the inside of the casing flows to the heat exchanger 12 to exchange heat with the refrigerant.

[0039] The fan assembly 13 is arranged in the casing, and the fan assembly 13 is arranged in the casing for driving the airflow to flow through the heat exchanger 12 for heat exchange. Under the driving of the fan assembly 13, the outdoor air enters the casing from the outside, flows to the heat exchanger 12, and is discharged to the outside under the driving of the fan assembly 13 after exchanging heat with the refrigerant at the heat exchanger 12.

[0040] The heat exchanger 12 works as a condenser in the refrigeration mode of the mobile air conditioner, so that the refrigerant compressed by the compressor 14 is condensed by emitting heat to the outdoor air through the heat exchanger 12. The heat exchanger 12 works as an evaporator in the heating mode of the mobile air conditioner, so that the refrigerant after pressure reduction is evaporated by absorbing heat of the outdoor air through the heat exchanger 12.

[0041] The arrangement and connection of the compressor 14 and the heat exchanger 12 in the casing can adopt any existing manner, which should be known by those skilled in the art, and therefore, the arrangement position and connection manner of the compressor 14 and the heat exchanger are not specifically limited and described in detail herein so as not to cover and obscure the key points of the present application.

[0042] The fan assembly 13 includes a fan and a fan, which are drivingly connected, and the fan drives the fan to rotate, so that the outdoor air source continuously enters the inside of the casing and flows to the heat exchanger 12, so that the outdoor air exchanges heat with the refrigerant at the heat exchanger 12 to realize the operation of the air conditioner outdoor unit 100.

[0043] The compressor 14 is arranged in the casing. The compressor 14 is provided with an exhaust port and a return port, and the compressor 14 compresses the refrigerant so that the low-pressure refrigerant becomes high-pressure gaseous refrigerant. The low-pressure refrigerant enters the compressor 14 from the return port, and the compressor 14 compresses the low-pressure refrigerant into high-pressure refrigerant, and the high-pressure refrigerant is discharged from the exhaust port, and the refrigerant is cooled at the condenser, and is heated at the evaporator after pressure reduction, and finally enters the compressor 14 from the return port.

[0044] The air conditioner outdoor unit 100 further comprises a suction pipe 15 connected to the return port of the compressor 14. The suction pipe 15 can be connected to the evaporator, and the high-pressure refrigerant flows out of the exhaust port of the compressor 14, flows to the evaporator after being cooled at the condenser, and flows back to the compressor 14 from the return port through the suction pipe 15 after being heated at the evaporator.

[0045] The air conditioner outdoor unit 100 further comprises an exhaust pipe connected to the exhaust port of the compressor 14. One end of the exhaust pipe is in communication with the exhaust port of the compressor 14, and the other end of the exhaust pipe can be in communication with the condenser. The high-pressure refrigerant flows out of the exhaust port of the compressor 14, flows to the evaporator through the exhaust pipe after being cooled at the condenser, and finally returns to the compressor 14 after being heated at the evaporator.

[0046] The pipeline (including the exhaust pipe and the suction pipe 15) connected with the compressor 14 is also an elastic system itself and has a certain inherent frequency. The main reasons causing the pipeline vibration are the pulse vibration of the pipeline and the imbalance of the rotating equipment. The mechanical resonance of the pipeline generally occurs when the excitation frequency is equal to or close to a certain order of the inherent frequency. The vibration caused by the imbalance of the rotating equipment is transmitted to the pipeline connected with the rotating equipment. If the frequency of the transmitted vibration is close to the inherent frequency of the pipeline, the mechanical resonance of the pipeline system is caused, which directly leads to the damage of the pipeline and the connection.

[0047] The rupture of the pipeline (including the exhaust pipe and the suction pipe 15) of the outdoor unit 100 of the air conditioner caused by excessive stress vibration is one of the most typical faults of the air conditioner. For some variable frequency air conditioners, the compressor 14 needs to operate in a wide frequency range of 10-100 Hz, and the vibration source force output by the compressor 14 at each frequency is different, so the properties of the vibration transmitted to the pipeline are also different. The reason for the excessive vibration stress of the pipeline is that the vibration source force output by the compressor 14 is coupled with the inherent frequency of the pipeline to produce resonance.

[0048] In the embodiment of the present application, the outdoor unit 100 of the air conditioner further comprises a damping device 20. Specifically, the damping device 20 can damp the suction pipe 15 and / or the exhaust pipe. When the suction pipe 15 and the exhaust pipe vibrate due to the vibration of the compressor 14, the damping device 20 suppresses the vibration of the suction pipe 15 and / or the exhaust pipe, avoids the resonance of the suction pipe 15 and / or the exhaust pipe, and thus prevents the rupture.

[0049] As shown in FIG. 1, Figures 4-8 the damping device 20 comprises a damping ring 21, and the damping ring 21 contains a plurality of elastic balls. Specifically, the damping ring 21 is in the shape of a ring, and a cavity is formed in the damping ring 21. The cavity contains a plurality of elastic balls, and the plurality of elastic balls are arranged adjacent to each other in the cavity.

[0050] As shown in FIG. 1, Figure 4 and Figure 5 the damping ring 21 is sleeved on the outer circumferential side of the suction pipe 15. Specifically, the damping ring 21 can be sleeved on the outer circumferential side of the suction pipe 15. When the suction pipe 15 vibrates due to the vibration of the compressor 14, the elastic balls dissipate energy by mutual friction, thereby reducing the vibration of the suction pipe 15 in the radial and axial directions, and avoiding the resonance of the suction pipe 15 and the exhaust pipe to prevent the rupture.

[0051] In some other embodiments, the damping ring 21 is sleeved on the outer circumferential side of the exhaust pipe (not shown in the figure). Specifically, the damping ring 21 can be sleeved on the outer circumferential side of the exhaust pipe. When the exhaust pipe vibrates due to the vibration of the compressor 14, the elastic balls in the damping ring 21 sleeved on the outer circumferential side of the exhaust pipe dissipate energy by mutual friction, thereby reducing the vibration of the exhaust pipe in the radial and axial directions.

[0052] AsFigures 5-10 As shown, the damping device 20 further comprises an elastic member 22, one end of which is connected with the base 11 and the other end of which is connected with the damping ring 21, and the elastic member 22 can be elongated or compressed. Specifically, the elastic member 22 is connected between the damping ring 21 and the base 11, and can buffer the vibration of the air inlet pipe 15 or the air outlet pipe. The elastic member 22 can be elongated or compressed due to its elasticity.

[0053] The elastic member 22 can be a spring.

[0054] When the air inlet pipe 15 or the air outlet pipe vibrates due to the vibration of the compressor 14, the elastic member 22 deforms due to the force of the air inlet pipe 15 or the air outlet pipe, and the elastic member 22 applies a force in the opposite direction to the air inlet pipe 15 or the air outlet pipe to weaken the vibration of the air inlet pipe 15 or the air outlet pipe in the axial and radial directions, so as to suppress the vibration of the air inlet pipe 15 and / or the air outlet pipe, and avoid the resonance of the air inlet pipe 15 and the air outlet pipe to cause the pipeline to burst.

[0055] Thus, the damping ring 21 and the elastic member 22 form a two-stage vibration isolation system, which suppresses the radial and axial vibrations of the air inlet pipe 15 and the air outlet pipe to avoid the resonance of the air inlet pipe 15 and the air outlet pipe to cause the pipeline to burst. By suppressing the vibration of the air inlet pipe 15 or the air outlet pipe through the damping ring 21 and the elastic member 22, timely correction of the excessive vibration of the air outlet pipe and the air inlet pipe 15 can be achieved, and the service life of the product can be ensured.

[0056] Further, the damping device 20 further comprises a support 23, one side of which is connected with the upper surface of the base 11 and the other side of which is connected with one end of the elastic member 22. Specifically, one side of the support 23 is fixedly connected with the upper surface of the base 11, which can be fixedly connected in a welding or screwing manner, and the operation is simple and the connection strength is high. The other side of the support 23 is connected with one end of the elastic member 22 away from the damping ring 21, which provides a fulcrum for one end of the elastic member 22, so that the elastic member 22 can be elongated or compressed to suppress the vibration of the air inlet pipe 15 or the air outlet pipe.

[0057] In some embodiments of the present application, the outdoor unit 100 of the air conditioner further comprises a plurality of fasteners, a plurality of first mounting holes are provided on the support 23, a plurality of second mounting holes can be formed on the base 11, and the plurality of fasteners are respectively passed through the plurality of first mounting holes and the plurality of second mounting holes and then fixedly connected with the base 11 to fix the support 23 on the base 11, thereby completing the installation and fixation of the damping device 20.

[0058] According to the present application, Figures 6-10As shown, the damping device 20 comprises a piston rod 24, the lower side of which is in sliding connection with the support 23 and the upper side of which is connected with one end of the elastic member 22. Specifically, the piston rod 24 is in sliding connection with the support 23, so that the piston rod 24 can move along the height direction relative to the support 23, so as to move one end of the elastic member 22 along the height direction, change the elongation or compression state of the elastic member 22, change the rigidity of the air inlet pipe 15 or the exhaust pipe, thereby inhibiting the vibration of the air inlet pipe 15 or the exhaust pipe, and avoiding resonance to cause the pipeline to burst.

[0059] The piston rod 24 can move along the height direction to move one end of the elastic member 22 upward or downward, so as to change the direction and size of the force of the elastic member 22 acting on the air inlet pipe 15 or the exhaust pipe, and the direction and size of the force of the elastic member 22 acting on the air inlet pipe 15 or the exhaust pipe can be adjusted according to the amplitude and vibration direction of the air inlet pipe 15 or the exhaust pipe.

[0060] When the piston rod 24 moves upward, one end of the elastic member 22 moves upward, and there are three cases:

[0061] When the elastic member 22 is initially in a compression state and is currently in a compression state, the pushing force of the elastic member 22 acting on the air inlet pipe 15 and the exhaust pipe is increased.

[0062] When the elastic member 22 is initially in an elongation state and is currently in an elongation state, the pulling force of the elastic member 22 acting on the elastic member 22 and the exhaust pipe is reduced.

[0063] When the elastic member 22 is initially in an elongation state and is currently in a compression state, the force of the elastic member 22 acting on the air inlet pipe 15 and the exhaust pipe is changed from a pulling force to a pushing force.

[0064] When the piston rod 24 moves downward, one end of the elastic member 22 moves downward, and there are three cases:

[0065] When the elastic member 22 is initially in an elongation state and is currently in an elongation state, the pulling force of the elastic member 22 acting on the air inlet pipe 15 and the exhaust pipe is increased.

[0066] When the elastic member 22 is initially in a compression state and is currently in a compression state, the pushing force of the elastic member 22 acting on the elastic member 22 and the exhaust pipe is reduced.

[0067] When the elastic member 22 is initially in a compression state and is currently in an elongation state, the force of the elastic member 22 acting on the air inlet pipe 15 and the exhaust pipe is changed from a pushing force to a pulling force.

[0068] In some embodiments, the vibration damping device 20 further comprises a driving member, the driving member and the piston rod 24 are in transmission connection, and the driving member is used to drive the piston rod 24 to slide along the height direction. Specifically, the movement direction of the piston rod 24 can be adjusted according to the amplitude and vibration direction of the air inlet pipe 15 and the exhaust pipe, the driving member drives the piston rod 24 to move up and down along the height direction, so as to change the extension state of the elastic member 22, thereby adjusting the direction and size of the force applied by the elastic member 22 to the air inlet pipe 15 or the exhaust pipe, and achieving the purpose of suppressing the vibration of the air inlet pipe 15 and the exhaust pipe.

[0069] The vibration damping device 20 further comprises a controller, the controller and the driving member are in electrical connection, and the controller is used to control the operation of the driving member. Specifically, the movement direction of the piston rod 24 can be adjusted according to the amplitude and vibration direction of the air inlet pipe 15 and the exhaust pipe, and the controller can control the operation of the driving member, so that the driving member drives the piston rod 24 to move along the height direction, so that one end of the elastic member 22 moves along the height direction, thereby adjusting the direction and size of the force applied by the elastic member 22 to the air inlet pipe 15 or the exhaust pipe, and achieving the purpose of suppressing the vibration of the air inlet pipe 15 and the exhaust pipe.

[0070] Referring to Figures 6-10 The vibration damping device 20 comprises a first plate member 25, the lower side of the first plate member 25 and the upper side of the piston rod 24 are fixedly connected, and the upper side is fixedly connected with one end of the elastic member 22. Specifically, the first plate member 25 provides a mounting point for one end of the elastic member 22, and ensures the mounting stability of one end of the elastic member 22. The lower side of the first plate member 25 is connected with the upper side of the piston rod 24, so as to connect one end of the elastic member 22 and the upper side of the piston rod 24, and then one end of the elastic member 22 moves along the height direction with the piston rod 24.

[0071] In some embodiments, the vibration damping device 20 further comprises a second plate member 26, the lower side of the second plate member 26 is connected with the other end of the elastic member 22, and the upper side is fixedly connected with the damping ring 21. Specifically, the upper side of the second plate member 26 provides a mounting point for the damping ring 21, and the lower side of the second plate member 26 provides a mounting point for the other end of the elastic member 22, so as to ensure the mounting stability of the damping ring 21 and the other end of the elastic member 22. The first plate member 25 connects the other end of the elastic member 22 and the damping ring 21, so as to transmit the elastic force of the elastic member 22 to the damping ring 21, thereby suppressing the vibration of the air inlet pipe 15 or the exhaust pipe.

[0072] As Figure 10As shown in the drawings, the damping ring 21 comprises at least two accommodating cavities 214, which are arranged around the circumferential side of the damping ring 21 and are not communicated with each other, and a plurality of elastic balls are accommodated in any accommodating cavity 214. Specifically, the at least two accommodating cavities 214 are spaced apart from each other, and a plurality of elastic balls are arranged in each accommodating cavity 214, so that the elastic balls in the damping ring 21 are uniformly arranged, and the elastic balls in the damping ring 21 can absorb the vibration energy in each direction of the circumference of the exhaust pipe or the air intake pipe 15.

[0073] As shown in the drawings, Figure 9 and Figure 10 the damping ring 21 comprises a first ring part 211, in which at least one accommodating cavity 214 is arranged. That is, the first ring part 211 is a semi-circular ring, and a plurality of elastic balls can be accommodated in the first ring part 211, so that when the part of the air intake pipe 15 or the part of the exhaust pipe abutting against the first ring part 211 vibrates, the elastic balls in the first ring part 211 rub against each other, the elastic balls dissipate the vibration energy of the air intake pipe 15 or the exhaust pipe through mutual friction, and then the vibration of the air intake pipe 15 or the exhaust pipe in the radial direction and the axial direction is reduced.

[0074] Further, the damping ring 21 comprises a second ring part 212, in which at least one accommodating cavity 214 is arranged. Specifically, that is, the second ring part 212 is a semi-circular ring, and a plurality of elastic balls can be accommodated in the second ring part 212, so that when the part of the air intake pipe 15 or the part of the exhaust pipe abutting against the second ring part 212 vibrates, the plurality of elastic balls in the second ring part 212 rub against each other, the plurality of elastic balls in the second ring part 212 dissipate the vibration energy of the air intake pipe 15 or the exhaust pipe through mutual friction, and then the vibration of the air intake pipe 15 or the exhaust pipe is suppressed.

[0075] As shown in the drawings, Figure 5 and Figure 10 one end of the second ring part 212 is connected with one end of the first ring part 211, and the other end of the second ring part 212 is arranged opposite to the other end of the first ring part 211. That is, the other end of the first ring part 211 and the other end of the second ring part 212 form an opening 213. The material of the damping ring 21 is an elastic material, and the damping ring 21 can be deformed from the opening 213 to adapt to air intake pipes 15 or exhaust pipes with different diameters.

[0076] The accommodating cavities 214 in the damping ring 21 can be two, three, four, five, six, etc.

[0077] In some embodiments of the present application, as shown in the drawings, Figure 10 the accommodating cavities 214 in the damping ring 21 can be four, two of which are arranged in the first ring part 211 and are spaced apart from each other, and the other two of which are arranged in the second ring part 212 and are spaced apart from each other.

[0078] Combination Figure 11 As shown in the figure, after the air conditioner outdoor unit 100 is started, the compressor 14 is stably operated.

[0079] The control method of the air conditioner outdoor unit 100 of the embodiment of the application comprises the following steps:

[0080] Step S1: Obtain the motion parameters of the current suction pipe 15 or the exhaust pipe in multiple directions, and calculate the maximum value of the difference values of the multiple motion parameters.

[0081] The multiple directions include the circumferential direction and the axial direction of the suction pipe 15 and the exhaust pipe. In the embodiment of the application, three directions are selected, that is, the first direction and the second direction perpendicular to the radial direction of the suction pipe 15 and the exhaust pipe, and the axial direction.

[0082] Wherein, the absolute value of the difference value of the motion parameter and the phase difference value are both referred to.

[0083] When the damping device 20 is used for damping, the motion parameters (including acceleration or speed) of the suction pipe 15 and the exhaust pipe can be obtained, and a certain motion parameter of the suction pipe 15 and the exhaust pipe can be selected according to the actual design requirements. In actual design, one or more motion parameters of the suction pipe 15 or the exhaust pipe can be selected, such as acceleration, speed, displacement and amplitude.

[0084] When the motion parameter of the suction pipe 15 and the exhaust pipe is acceleration, an acceleration sensor is arranged on the suction pipe 15 or the exhaust pipe, the acceleration sensor can obtain the acceleration (for example, a x , a y , a z ) of the current suction pipe 15 or the exhaust pipe in multiple directions, calculate the difference values (for example, a xy , a yz , a zx ) of the acceleration in multiple directions, and compare the absolute values of the difference values of the acceleration to obtain the first maximum value M1.

[0085] When the motion parameter of the suction pipe 15 and the exhaust pipe is speed, a speed sensor is arranged on the suction pipe 15 or the exhaust pipe, the speed sensor can obtain the speed (for example, v x , v y , v z ) of the current suction pipe 15 or the exhaust pipe in multiple directions, calculate the difference values (for example, v xy , v yz , v zx ) of the speed in multiple directions, and compare the absolute values of the difference values of the speed to obtain the second maximum value M2.

[0086] Step S2: Obtain phase values in multiple directions of the current intake pipe 15 or exhaust pipe, and calculate phase difference values in the multiple directions.

[0087] Specifically, the sensors arranged on the intake pipe 15 or exhaust pipe can measure phase values (for example, θ x , θ y , θ z ) in multiple directions, and calculate phase difference values (for example, θ xy , θ yz , θ zx ) in the multiple directions.

[0088] Step S3: The first preset value is a threshold value of the intake pipe 15 or exhaust pipe set by the system, and the maximum value (for example, the first maximum value M1 or the second maximum value M2) is compared with the first preset value.

[0089] If the maximum value is less than the first preset value, step S4 is performed: the damping device 20 is controlled not to act. At this time, the vibration of the intake pipe 15 or exhaust pipe can be damped by the two-stage vibration isolation system composed of the elastic member 22 and the damping ring 21.

[0090] When the maximum value is greater than or equal to the first preset value, step S5 is performed: it is judged whether the phase difference value is equal to the second preset value.

[0091] The second preset value is 0 and 180. The phase difference values (for example, θ xy , θ yz , θ zx ) in the multiple directions are compared with the second preset value (for example, θ xy , θ yz , θ z x at least one of which is equal to 0 or 180.

[0092] If the phase difference values in the multiple directions are not equal to the second preset value, the damping device 20 is controlled not to act. At this time, the vibration of the intake pipe 15 or exhaust pipe can be damped by the two-stage vibration isolation system composed of the elastic member 22 and the damping ring 21.

[0093] If at least one of the phase difference values in the multiple directions is equal to the second preset value, the damping device 20 is controlled to operate. The driving member can drive the piston rod 24 to move in the height direction, so that one end of the elastic member 22 moves in the height direction, thereby adjusting the direction and size of the force exerted by the elastic member 22 on the intake pipe 15 or exhaust pipe, and achieving suppression of the vibration of the intake pipe 15 and exhaust pipe.

[0094] The elastic member 22 is elongated or compressed, which can change the stiffness of the intake pipe 15 or exhaust pipe, thereby changing the natural frequency and avoiding the resonance region. It can realize full-band operation of the compressor 14, and it is not necessary to limit the frequency of the compressor 14.

[0095] During the operation of the vibration reduction device 20, the phase values in each direction are continuously monitored, and when the phase difference values in each direction are not equal to 0 or 180, it indicates that the current has avoided the resonance region, at this time, the control of the vibration reduction device 20 is not in action, and the piston rod 24 remains in the current position state.

[0096] The outdoor unit 100 of the air conditioner and the control method thereof in the embodiment of the present application monitor the parameters and phase difference values of the vibration of the pipeline (suction pipe 15 and / or exhaust pipe) through the sensor, judge whether the pipeline is in resonance, and perform different operations. When the pipeline is not in resonance but the vibration is severe, the two-stage vibration isolation system composed of the damping ring 21 and the elastic element 22 of the vibration reduction device 20 is used to suppress the radial vibration and axial vibration of the pipeline; when the pipeline is in resonance (the maximum value of the motion parameter is greater than or equal to the first preset value and at least one of the phase difference values is equal to the second preset value), the piston rod 24 is used to compress / lengthen the linkage spring, so as to change the stiffness of the pipeline, so that the natural frequency of the pipeline is offset from the characteristic vibration source force frequency output by the compressor 14, and after the resonance region is offset, the vibration stress of the pipeline can be reduced.

[0097] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0098] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0099] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An outdoor unit of an air conditioner, comprising: a casing, comprising a base and a shell, the shell and the base being connected, and the shell being provided with an outdoor air inlet and an outdoor air outlet; a heat exchanger arranged in the casing; a fan assembly arranged in the casing, through which an airflow outside the casing is introduced into the casing through the outdoor air inlet, and is outputted outside through the outdoor air outlet after heat exchange through the heat exchanger; a compressor arranged in the casing; characterized in that the outdoor unit of the air conditioner further comprises: a suction pipe connected to a return air outlet of the compressor; an exhaust pipe connected to an exhaust air outlet of the compressor; wherein the outdoor unit of the air conditioner further comprises a damping device, comprising: a damping ring, the damping ring containing a plurality of elastic balls, the damping ring being sleeved on the outer circumferential side of the suction pipe and / or the exhaust pipe; a resilient member, one end of which is connected to the base and the other end of which is connected to the damping ring, the resilient member being elongatable or compressible.

2. The outdoor unit of claim 1, wherein The damping device further comprises: a support, one side of which is connected to the base and the other side of which is connected to one end of the resilient member.

3. The outdoor unit of claim 2, wherein The damping device comprises: a piston rod, the lower side of which is in sliding connection with the support and the upper side of which is connected to one end of the resilient member.

4. The outdoor unit of claim 3, wherein The damping device further comprises: a driving member, which is in transmission connection with the piston rod, and is used to drive the piston rod to slide in the height direction; a controller, which is in electrical connection with the driving member, and is used to control the operation of the driving member.

5. The outdoor unit of claim 3, wherein The damping device comprises: a first plate member, the lower side of which is fixedly connected to the upper side of the piston rod and the upper side of which is fixedly connected to one end of the resilient member; and / or The damping device further comprises: a second plate member, the lower side of which is connected to the other end of the resilient member and the upper side of which is fixedly connected to the damping ring.

6. The air conditioner outdoor unit as claimed in claim 1, wherein The damping ring comprises: at least two accommodating cavities, which are arranged around the circumferential side of the damping ring and are not in communication with each other, and each of the accommodating cavities contains a plurality of elastic balls.

7. The outdoor unit of claim 6, wherein The damping ring comprises: a first ring portion, in which at least one accommodating cavity is arranged; a second ring portion, in which at least one accommodating cavity is arranged, one end of the second ring portion being connected to one end of the first ring portion and the other end of the second ring portion being oppositely arranged to the other end of the first ring portion.

8. A control method of the outdoor unit of the air conditioner according to any one of claims 1 to 7, characterized by, The control method comprises: obtaining motion parameters in a plurality of directions of the current suction pipe or exhaust pipe, and calculating a maximum value of the difference values of the plurality of motion parameters; obtaining phase values in the plurality of directions of the current suction pipe or exhaust pipe, and calculating phase difference values of the plurality of directions; when the maximum value is greater than a first preset value and at least one of the phase difference values is equal to a second preset value, controlling the damping device to damp the suction pipe or the exhaust pipe; wherein the plurality of directions include a first direction and a second direction perpendicular to the radial direction of the suction pipe and the exhaust pipe, and an axial direction.

9. The control method of the outdoor unit of the air conditioner according to claim 8, wherein Further comprising: when the maximum value is less than the first preset value, controlling the damping device not to act.

10. The control method of the outdoor unit of the air conditioner according to claim 8, wherein Further comprising: when the maximum value is greater than the first preset value and the phase difference value is not equal to the second preset value, controlling the damping device not to act.

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