Pipeline counterweight structure and control method thereof, and air conditioner

Abstract

The application belongs to the technical field of air conditioning, and particularly relates to a pipeline counterweight structure, a control method thereof and an air conditioner. The pipeline counterweight structure comprises a shell, an adjustable counterweight block arranged in the shell, a displacement driving element and a controller. The adjustable counterweight block is slidingly arranged in the shell. The displacement driving element is arranged on the shell and used for driving the adjustable counterweight block to slide along the radial direction of the pipeline. The controller is electrically connected with the displacement driving element and the adjustable counterweight block, and used for adjusting the weight and position of the adjustable counterweight block. The pipeline counterweight structure provided by the application adjusts the damping frequency of the counterweight block by adjusting the weight and position of the adjustable counterweight block, and solves the technical problem that the resonance suppression effect of the counterweight block is poor due to the uncertain external excitation working condition of the pipeline counterweight block in the prior art.

Description

Technical Field

[0001] This invention belongs to the field of air conditioning technology, specifically relating to a pipeline counterweight structure and its control method, and an air conditioner. Background Technology

[0002] Currently, in air conditioning systems, counterweights are typically placed on the pipes to alter their natural frequency in order to prevent pipe resonance. In existing technologies, some air conditioning pipe counterweights are made of rubber or damping blocks, which are fixed to the pipes to prevent resonance. However, in actual use, the effectiveness of the counterweights in suppressing resonance decreases due to the influence of the surrounding environment and external excitation conditions.

[0003] Especially compared to parking air conditioners, which are generally installed in the truck cab, the outdoor unit piping of a parking air conditioner is not only affected by the compressor running, but also by the road surface when the truck is running. Therefore, the counterweight's ability to suppress resonance is reduced. Summary of the Invention

[0004] In view of this, the present invention provides a pipeline counterweight structure and its control method, as well as an air conditioner. By adjusting the weight and position of the adjustable counterweight, the vibration reduction frequency of the counterweight is adjusted, which solves the technical problem of poor resonance suppression effect of the counterweight caused by the uncertainty of the external excitation conditions of the pipeline counterweight in the prior art.

[0005] To address the aforementioned problems, according to one aspect of this application, the present invention provides a pipeline counterweight structure. The pipeline counterweight structure is sleeved on a pipeline for vibration damping. The pipeline counterweight structure includes a housing, an adjustable counterweight block disposed within the housing, a displacement drive component, and a controller. The adjustable counterweight block is slidably disposed within the housing. The displacement drive component is disposed on the housing for driving the adjustable counterweight block to slide radially along the pipeline. The controller is electrically connected to the displacement drive component and the adjustable counterweight block for adjusting the weight and position of the adjustable counterweight block.

[0006] In some embodiments, the adjustable counterweight includes a counterweight liquid containing structure, a connecting pipe, and a liquid storage structure. The counterweight liquid containing structure is connected to one end of the connecting pipe, and the other end of the connecting pipe is connected to the liquid storage structure, for adjusting the weight of the counterweight liquid in the counterweight liquid containing structure.

[0007] In some embodiments, one side of the counterweight liquid containing structure forms a first chamber with the inner wall of one side of the outer shell, and the other side of the counterweight liquid containing structure forms a second chamber with the inner wall of the other side of the outer shell.

[0008] In some embodiments, the displacement drive includes a first pressure regulating member communicating with a first chamber and a second pressure regulating member communicating with a second chamber, the first pressure regulating member and the second pressure regulating member being used to adjust the moving position of the adjustable counterweight.

[0009] In some embodiments, the displacement drive further includes a lift, the lifting end of which is connected to an adjustable counterweight for driving the adjustable counterweight to slide.

[0010] In some embodiments, the counterweight liquid containing structure includes a first valve plate and a second valve plate spaced radially from the first valve plate in the pipeline, wherein the first valve plate, the second valve plate, the outer wall of the pipeline and the inner wall of the housing form a chamber for containing the counterweight liquid.

[0011] The lifting end of the elevator is connected to either the first or second valve plate.

[0012] In some embodiments, the counterweight liquid containment structure includes a first seal disposed at the connection between the first valve plate and the pipeline, and a second seal disposed between the first valve plate and the housing;

[0013] And / or, the counterweight fluid containment structure includes a third seal disposed at the connection between the second valve plate and the pipeline, and a fourth seal disposed between the second valve plate and the housing.

[0014] To address the aforementioned problems, according to another aspect of this application, the present invention provides a control method for a pipeline counterweight structure, the control method comprising the following steps: acquiring the real-time operating frequency of an external excitation, wherein the operating frequency of the external excitation includes the real-time operating frequency of the compressor;

[0015] The adjustable counterweight is controlled to a preset weight based on the real-time operating frequency of the external excitation, and simultaneously moved to a preset position. The preset weight is the weight corresponding to the minimum value of both the peak and average value of the pipeline vibration response at the real-time operating frequency of the external excitation, and the preset position is the position corresponding to the minimum value of both the peak and average value of the pipeline vibration response at the real-time operating frequency of the external excitation.

[0016] The preset weight and preset position are pre-stored in the controller.

[0017] In some embodiments, before obtaining the real-time operating frequency of the external stimulus, the following steps are included:

[0018] The preset weight and preset position of the adjustable counterweight are obtained when the peak and average values ​​of the vibration response of the pipeline are at their minimum under different external excitations.

[0019] In some embodiments, the preset weight and preset position of the adjustable counterweight corresponding to the minimum value of the peak and average vibration response of the pipeline under different external excitations include:

[0020] When the compressor's real-time operating frequency is 0 and the vehicle is in operation, the acceleration signal generated by the excitation of the pipeline by the vehicle body, and the peak and average values ​​of the vibration response of the pipeline under the acceleration signal are both at their minimum values, the weight and position of the adjustable counterweight can be determined as the preset weight and preset position corresponding to the excitation.

[0021] When the real-time operating frequency of the compressor is not 0 and the vehicle is in operation, the acceleration signal generated by the excitation of the pipeline by the vehicle body, and the peak and average values ​​of the vibration response of the pipeline under the acceleration signal are both at their minimum values, the weight and position of the counterweight can be adjusted, and the weight and position are determined as the preset weight and preset position corresponding to the excitation.

[0022] The vehicle body is a structure capable of driving the compressor to move.

[0023] In some embodiments, the preset weight and preset position of the adjustable counterweight corresponding to the peak value and minimum mean value of the pipeline vibration response under different external excitations further include:

[0024] When the compressor vibration frequency is not 0 and the vehicle body is not running, the acceleration signal generated by the excitation of the pipeline by the vehicle body is collected, and the peak value and average value of the vibration response of the pipeline under the acceleration signal are both at their minimum values. The weight and position of the adjustable counterweight are then determined as the preset weight and preset position corresponding to the excitation.

[0025] In some embodiments, controlling the adjustable counterweight to a preset counterweight based on the real-time operating frequency of the external stimulus, and simultaneously controlling the adjustable counterweight to move to a preset position, includes:

[0026] When the compressor's operating frequency remains constant, the preset counterweight and preset position of the adjustable counterweight block remain unchanged.

[0027] When the operating frequency of the compressor changes, adjust the preset counterweight and preset position of the adjustable counterweight block.

[0028] To address the aforementioned problems, according to another aspect of this application, the present invention provides an air conditioner that includes the aforementioned pipe counterweight structure.

[0029] Compared with the prior art, the pipeline counterweight structure of the present invention has at least the following beneficial effects:

[0030] A pipeline counterweight structure is used to reduce pipeline noise. For ease of understanding, the explanation will focus on the pipeline noise reduction in an air conditioner. A housing is fitted onto the pipeline to form a sound-absorbing space on at least a portion of the pipeline's exterior. An adjustable counterweight is slidably disposed within the housing. This serves two purposes: adjusting the center of gravity of the pipeline counterweight structure and changing its natural frequency. This allows the pipeline counterweight structure in this embodiment to withstand vibrations under different frequency excitations. The adjustable counterweight can adjust its own weight, resulting in the pipeline counterweight structure having more natural frequencies after adjustment, thus reducing pipeline noise under different operating conditions. A displacement drive is used to drive the adjustment of the weight and displacement of the adjustable counterweight. A controller is connected to the displacement drive and the adjustable counterweight to suppress pipeline vibrations under different operating conditions. This embodiment of the invention provides a pipeline counterweight structure that adjusts the vibration reduction frequency of the counterweight by adjusting its weight and position, solving the technical problem in the prior art where the counterweight's resonance suppression effect is poor due to uncertain external excitation conditions.

[0031] The control method for the pipeline counterweight structure provided by this invention is designed based on the above-mentioned pipeline counterweight structure. Therefore, the beneficial effects of the control of the pipeline counterweight structure are all the beneficial effects of the above-mentioned pipeline counterweight structure, and will not be repeated here.

[0032] The air conditioner provided by this invention is designed based on the above-mentioned pipeline counterweight structure. Therefore, the beneficial effects of the air conditioner are the same as all the beneficial effects of the above-mentioned pipeline counterweight structure, and will not be repeated here.

[0033] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the overall structure of the pipeline counterweight structure provided in an embodiment of the present invention;

[0036] Figure 2 This is a cross-sectional structural diagram of the pipeline counterweight structure provided in an embodiment of the present invention;

[0037] Figure 3 for Figure 2Enlarged view of the structure at point A;

[0038] Figure 4 for Figure 2 Enlarged view of the structure at point B;

[0039] Figure 5 A schematic diagram of the main structure of the adjustable counterweight block of the pipeline counterweight structure provided in the embodiment of the present invention;

[0040] Figure 6 This is a schematic diagram of the external structure of the elevator with a pipeline counterweight structure provided in an embodiment of the present invention;

[0041] Figure 7 This is a schematic diagram of the internal structure of the elevator with a pipeline counterweight structure provided in an embodiment of the present invention;

[0042] Figure 8 This is a schematic diagram of the overall structure of the outdoor unit of an air conditioner provided in an embodiment of the present invention;

[0043] Figure 9 The control flowchart of the pipeline counterweight structure control method provided in the embodiment of the present invention;

[0044] Figure 10 This is a flowchart illustrating the acquisition of the preset weight and preset position of the adjustable counterweight block in the pipeline counterweight structure control method provided in this embodiment of the invention.

[0045] The components are as follows: 1. Pipeline; 21. First chamber; 22. Second chamber; 2. Outer shell; 3. Adjustable counterweight; 31. Counterweight liquid containing structure; 311. First valve plate; 312. Second valve plate; 313. First seal; 314. Second seal; 315. Third seal; 316. Fourth seal; 32. Connecting pipe; 33. Liquid storage structure; 4. Displacement drive component; 41. First pressure regulating component; 42. Second pressure regulating component; 43. Elevator; 5. Base. Detailed Implementation

[0046] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the specific embodiments, structures, features, and effects according to the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0047] In the description of this invention, it should be clearly stated that the terms "first," "second," etc., in the specification, claims, and accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence; the terms "vertical," "lateral," "longitudinal," "front," "rear," "left," "right," "up," "down," "horizontal," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are merely for the convenience of describing this invention, and do not mean that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this invention.

[0048] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] Example 1

[0050] This invention provides a pipeline counterweight structure, for reference. Figures 1 to 7 The pipeline counterweight structure is fitted onto the pipeline 1 to reduce vibration in the pipeline 1. The pipeline counterweight structure includes a shell 2, an adjustable counterweight 3 disposed inside the shell 2, a displacement drive 4, and a controller. The adjustable counterweight 3 is slidably disposed inside the shell 2. The displacement drive 4 is disposed on the shell 2 to drive the adjustable counterweight 3 to slide radially along the pipeline 1. The controller is electrically connected to the displacement drive 4 and the adjustable counterweight 3 to adjust the weight and position of the adjustable counterweight 3.

[0051] Specifically, the pipeline counterweight structure is used to reduce noise in the pipeline. For ease of understanding, the noise reduction of the pipeline in an air conditioner is used as an example. The outer casing 2 is fitted onto the pipeline 1 to form a sound-absorbing space on at least a portion of the outer side of the pipeline 1. The adjustable counterweight 3 is slidably disposed within the outer casing 2. It serves two purposes: firstly, to adjust the center of gravity of the pipeline counterweight structure, and secondly, to change the natural frequency of the pipeline counterweight structure. This allows the pipeline counterweight structure in this embodiment to withstand vibrations under different frequency excitations. The adjustable counterweight 3 can adjust its own weight, thus giving the pipeline counterweight structure more natural frequencies after adjustment, thereby reducing noise in the pipeline 1 under different operating conditions. The displacement drive 4 is used to drive and adjust the weight and displacement of the adjustable counterweight 3. The controller is connected to the displacement drive 4 and the adjustable counterweight 3 to suppress vibrations in the pipeline 1 under different operating conditions. The pipeline counterweight structure provided in this embodiment of the invention adjusts the vibration reduction frequency of the counterweight by adjusting the weight and position of the adjustable counterweight 3, thus solving the technical problem of poor resonance suppression effect of the counterweight due to the uncertainty of the external excitation conditions of the pipeline counterweight in the prior art.

[0052] It should be noted that the pipeline counterweight structure in this embodiment can not only be designed according to... Figure 1 and Figure 2 It can be placed vertically, or horizontally (not shown in the diagram). For example, when using this structure to reduce noise in vertical pipelines, it can be arranged as follows: Figure 1 and Figure 2 The structure is placed as shown; when reducing noise in a horizontal pipe, it can be placed horizontally. That is, the extension direction of the pipe counterweight structure is parallel to the extension direction of pipe 1, which requires noise reduction. Furthermore, the pipe counterweight structure in this embodiment can not only suppress excitation from the compressor but also reduce noise from other external excitations. For example, when the pipe counterweight structure in this embodiment is applied to a parking air conditioner, it not only suppresses excitation from the compressor but also from the road surface, thereby improving the noise reduction effect.

[0053] In a specific embodiment, reference is made to... Figure 1 , Figure 2 and Figure 5 The adjustable counterweight 3 includes a counterweight liquid containing structure 31, a connecting pipe 32, and a liquid storage structure 33. The counterweight liquid containing structure 31 is connected to one end of the connecting pipe 32, and the other end of the connecting pipe 32 is connected to the liquid storage structure 33, which is used to adjust the weight of the counterweight liquid in the counterweight liquid containing structure 31.

[0054] Specifically, the counterweight liquid containing structure 31 is used to contain the counterweight liquid. A connecting pipe 32 connects the counterweight liquid containing structure 31 and the storage structure 33, and is used to guide the counterweight liquid. The storage structure 33 is used to store the counterweight liquid. A controller is electrically connected to the storage structure 33 to control the storage structure 33 to extract or inject counterweight liquid into the counterweight liquid containing structure 31, thereby adjusting the weight of the counterweight.

[0055] It should be noted that the counterweight liquid containing structure 31 includes a fluid pump connected to a controller. The controller controls the fluid pump, thereby controlling the amount of fluid in the counterweight liquid containing structure 31. The counterweight liquid can also be any other fluid that serves a noise reduction function. The connecting pipe 32 can be a rubber hose or a hose of other structures.

[0056] In a specific embodiment, one side of the counterweight liquid containing structure 31 forms a first chamber 21 with the inner wall of one side of the outer shell 2, and the other side of the counterweight liquid containing structure 31 forms a second chamber 22 with the inner wall of the other side of the outer shell 2.

[0057] Specifically, the counterweight liquid containing structure 31 divides the sound-absorbing space inside the outer shell 2 into a first chamber 21 and a second chamber 22. The first chamber 21 and the second chamber 22 can be connected, or they can be disconnected. To ensure the stability of the counterweight liquid containing structure 31 during the sliding process, preferably, the first chamber 21 and the second chamber 22 are not connected. That is to say, during the sliding process, the sidewall of the counterweight liquid containing structure 31 abuts against the inner wall of the outer shell 2.

[0058] In a specific embodiment, the displacement drive 4 includes a first pressure regulating member 41 communicating with the first chamber 21 and a second pressure regulating member 42 communicating with the second chamber 22. The first pressure regulating member 41 and the second pressure regulating member 42 are used to adjust the moving position of the adjustable counterweight 3.

[0059] Specifically, the first pressure regulating component 41 is connected to the first chamber 21 to adjust the air pressure inside the first chamber 21, and the second pressure regulating component 42 is connected to the second chamber 22 to adjust the air pressure inside the second chamber 22, thereby allowing the counterweight liquid containing structure 31 to move within the outer casing 2. Furthermore, adjusting the pressure near the first pressure regulating component 41 and the second pressure regulating component 42 can change the stiffness of the counterweight liquid containing structure 31 vibrating axially along the pipeline 1, thereby adjusting the vibration absorption effect of the counterweight liquid containing structure 31 on the axial direction of the pipeline 1.

[0060] It should be noted that the first pressure regulating component 41 and the second pressure regulating component 42 can be air pumps to adjust the pressure inside the chamber by injecting or extracting air. To facilitate the sliding of the adjustable counterweight 3, the pipeline counterweight structure in this embodiment is fitted onto the straight-through pipeline 1.

[0061] When the pressure in the first chamber 21 is greater than or equal to the pressure in the second chamber 22, the counterweight liquid containing structure 31 can move to one side of the outer shell 2; when the pressure in the first chamber 21 is equal to the pressure in the second chamber 22, the counterweight liquid containing structure 31 can be stabilized within the outer shell 2; when the pressure in the first chamber 21 is less than the pressure in the second chamber 22, the counterweight liquid containing structure can move to the other side of the outer shell 2.

[0062] Taking a straight-through pipeline as an example, for ease of calculation, the outer shell 2 is a columnar structure, P1 is the pressure in the first chamber 21, P2 is the pressure in the second chamber 22, R is the inner diameter of the outer shell, r is the outer diameter of the pipeline 1, and G is the mass of the counterweight liquid:

[0063] when This ensures that the counterweight liquid containing structure 31 can move to one side of the outer shell 2; when P1×(πR) 2 -πr 2 )+G=P2×(πR 2 -πr 2 When P1×(πR) is reached, the counterweight liquid containing structure 31 is stable within the outer shell 2; when P1×(πR) is reached, the counterweight liquid containing structure 31 is stable within the outer shell 2. 2 -πr 2 )+G>P2×(πR 2 -πr 2 Only when this is done can the counterweight liquid containing structure 31 be moved to the other side of the outer shell 2.

[0064] In a specific embodiment, reference is made to... Figure 2 , Figure 3 , Figure 6 and Figure 7 The displacement drive component 4 includes a lift 43, the lifting end of which is connected to an adjustable counterweight 3 for driving the adjustable counterweight 3 to slide.

[0065] Specifically, while ensuring the pressure within the first chamber 21 and the second chamber 22, the adjustable counterweight 3 is reciprocated within the outer casing 2 by controlling the elevator 43, thereby adjusting the center of gravity of the pipeline counterweight structure and reducing noise in the pipeline 1 under different operating conditions. A displacement drive 4 is mounted on the outer casing 2, and a sealing gasket is provided at the connection between the displacement drive 4 and the outer casing 2 to improve the sealing performance of the first chamber 21 or the second chamber 22.

[0066] In a specific embodiment, reference is made to... Figures 2 to 5 The counterweight liquid containing structure 31 includes a first valve plate 311 and a second valve plate 312 that is arranged radially from the first valve plate 311 in the pipeline 1. The first valve plate 311, the second valve plate 312, the outer wall of the pipeline 1 and the inner wall of the outer shell 2 form a chamber for containing the counterweight liquid.

[0067] refer to Figure 2 and Figure 3 The lifting end of the elevator 43 is connected to either the first valve plate 311 or the second valve plate 312. Specifically, both the first valve plate 311 and the second valve plate 312 are slidably disposed within the housing 2 along the axial direction of the pipeline 1. The first valve plate 311, the second valve plate 312, the outer wall of the pipeline 1, and the inner wall of the housing 2 form a chamber for containing the counterweight liquid. The volume of the counterweight liquid containing structure 31 is adjusted by sliding the first valve plate 311 and the second valve plate 312, so that the volume of the counterweight liquid containing structure 31 is adjusted simultaneously with the weight of the counterweight liquid, so that the counterweight liquid containing structure 31 can be filled with counterweight liquid, thereby ensuring the stability of the center of gravity of the pipeline counterweight structure.

[0068] Specifically, during the process of injecting counterweight liquid into the counterweight liquid containing structure 31, the first valve plate 311 can be moved towards one side of the outer casing 2 by the elevator 43 to expand the volume of the counterweight liquid containing structure 31. The elevator 43 is located on one side of the outer casing 2 (e.g., Figure 2 and Figure 3 (as shown); the lifting end of the elevator 43 can also drive the second valve plate 312 to move to the other side of the outer casing 2 to expand the volume of the counterweight liquid containing structure 31 (not shown in the figure).

[0069] Similarly, during the process of extracting the counterweight liquid from the counterweight liquid containing structure 31, the elevator 43 drives the first valve plate 311 to move to the other side of the outer shell 2 to reduce the volume of the counterweight liquid containing structure 31; the elevator 43 can also drive the second valve plate 312 to move to one side of the outer shell 2 to reduce the volume of the counterweight liquid containing structure 31.

[0070] In a specific embodiment, the counterweight liquid containing structure 31 includes a first sealing member 313 disposed at the connection between the first valve plate 311 and the pipeline 1, and a second sealing member 314 disposed between the first valve plate 311 and the outer shell 2.

[0071] And / or, the counterweight liquid containment structure 31 includes a third seal 315 disposed at the connection between the second valve plate 312 and the pipeline 1, and a fourth seal 316 disposed between the second valve plate 312 and the housing 2.

[0072] Specifically, the first seal 313 and the second seal 314 are disposed on the first valve plate 311 to seal one end of the counterweight liquid receiving structure 31, and the third seal 315 and the fourth seal 316 are disposed on the second valve plate 312 to seal the other end of the counterweight liquid receiving structure 31. Furthermore, when the pipeline 1 vibrates, the counterweight liquid forms a damping structure within the outer casing 2. Under the inertia of the counterweight liquid, it forms a vibration reduction system with the first valve plate 311 and the second valve plate 312, and the vibration energy is dissipated through the friction between the first seal 313, the second seal 314, the third seal 315, and the fourth seal 316 and the outer casing 2.

[0073] Example 2

[0074] This invention provides a control method for a pipeline counterweight structure, with reference to... Figure 9 and Figure 10 The method includes the following steps:

[0075] Obtain the real-time operating frequency of the external stimulus, including the real-time operating frequency of the compressor;

[0076] The adjustable counterweight 3 is controlled to a preset weight based on the real-time operating frequency of the external excitation, and at the same time, the adjustable counterweight 3 is controlled to move to a preset position. The preset weight is the weight corresponding to the minimum value of the peak and average value of the vibration response of pipeline 1 under the real-time operating frequency of the external excitation, and the preset position is the position corresponding to the minimum value of the peak and average value of the vibration response of pipeline 1 under the real-time operating frequency of the external excitation.

[0077] The preset weight and preset position are pre-stored in the controller.

[0078] Specifically, the present invention provides a method for controlling a pipeline counterweight structure, which is used to control the pipeline counterweight structure in embodiment 1. For ease of understanding, the method is described using the noise reduction of pipeline 1 of the parking air conditioner as an example.

[0079] The operating frequency of the external excitation is obtained to target noise reduction in the pipeline under that excitation. It should be noted that the external excitation in this embodiment includes, but is not limited to, the real-time operating frequency of the compressor. During operation, the parking air conditioner's pipeline 1 mainly receives vibrations from the vehicle body caused by uneven road surfaces and vibrations generated by the air conditioner compressor during use. Therefore, the real-time operating frequency generated by vehicle body vibration can also be obtained. Based on the real-time operating frequency of the external excitation, the weight and position of the adjustable counterweight 3 are controlled to adjust the natural frequency of the pipeline counterweight structure, thereby suppressing resonance in pipeline 1.

[0080] In a specific embodiment, before obtaining the real-time operating frequency of the external stimulus, the following steps are included:

[0081] The preset weight and preset position of the adjustable counterweight 3 are obtained when the peak and average values ​​of the vibration response of pipeline 1 are at their minimum under different external excitations.

[0082] Specifically, the data acquisition method involves establishing a simulation system model of the pipeline counterweight structure under different excitations from the compressor to the road surface. When the peak and average vibration values ​​of pipeline 1 under the adjustment of the adjustable counterweight 3 are both at their minimum, the weight and position of the adjustable counterweight 3 at this time are recorded. This weight is the preset weight under this excitation, and this position is the preset position under this excitation, forming a database. At this time, a one-to-one correspondence is formed between the value of the external excitation and the weight and position of the adjustable counterweight 3. Then, during use, the controller can automatically match the corresponding weight and position of the adjustable counterweight 3 through the database based on the verticality of the external excitation. This allows the adjustable counterweight 3 to shorten the response time and improve the vibration reduction effect during vibration reduction, while reducing computation.

[0083] In a specific embodiment, reference is made to... Figure 10 The preset weight and preset position of the adjustable counterweight 3 are obtained when the peak and mean values ​​of the vibration response of pipeline 1 are at their minimum under different external excitations, including:

[0084] When the compressor's real-time operating frequency is 0 and the vehicle is in operation, the acceleration signal generated by the vehicle body excitation of pipeline 1, and the peak and average values ​​of the vibration response of pipeline 1 under the acceleration signal are both at their minimum values, the weight and position of the counterweight 3 can be adjusted, and the weight and position are determined as the preset weight and preset position corresponding to the excitation.

[0085] When the real-time operating frequency of the compressor is not 0 and the vehicle body is in operation, the acceleration signal generated by the vehicle body excitation of the pipeline 1, and the peak and average values ​​of the vibration response of the pipeline 1 under the acceleration signal are both at their minimum values, the weight and position of the counterweight 3 can be adjusted, and the weight and position can be determined as the preset weight and preset position corresponding to the excitation.

[0086] The vehicle body is a structure capable of driving the compressor to move.

[0087] Specifically, when the compressor's real-time operating frequency is 0 and the vehicle body is in operation, the compressor is not working, and pipeline 1 is mainly subjected to the excitation generated by the road surface on the vehicle body during operation. When the compressor's real-time operating frequency is not 0 and the vehicle body is in operation, the compressor is working, and pipeline 1 is mainly subjected to the excitation generated by the road surface on the vehicle body during operation, as well as the excitation generated by the compressor.

[0088] The data acquisition process for the preset weight and preset position under these two operating conditions is as follows: First, a vibration model of the pipeline counterweight structure under different excitations of the vehicle body is established. By adjusting the weight and position of the adjustable counterweight 3, the peak and average vibration response of pipeline 1 are observed. When the peak and average vibration response of pipeline 1 are at their minimum values, the pipeline counterweight structure has the best effect on suppressing resonance of pipeline 1 under this excitation. The weight and position of the adjustable counterweight 3 at this time are recorded. Then, a compressor vibration module is added to the vibration model. Similarly, by adjusting the weight and position of the adjustable counterweight 3, the peak and average vibration response of pipeline 1 are observed. When the peak and average vibration response of pipeline 1 are at their minimum values, the pipeline counterweight structure has the best effect on suppressing resonance of pipeline 1 under this excitation. The weight and position of the adjustable counterweight 3 at this time are recorded.

[0089] Further reference Figure 10 The system also includes the preset weight and preset position of the adjustable counterweight 3 corresponding to the peak and minimum mean values ​​of the vibration response of pipeline 1 under different external excitations, and further includes:

[0090] When the compressor vibration frequency is not 0 and the vehicle body is not running, the acceleration signal generated by the vehicle body excitation of pipeline 1, and the peak and average values ​​of the vibration response of pipeline 1 under the acceleration signal are both at their minimum values, the weight and position of the adjustable counterweight 3 are determined, and the weight and position are set as the preset weight and preset position corresponding to the excitation.

[0091] Specifically, when the compressor vibration frequency is not zero and the vehicle body is not running, only the compressor is working. At this time, pipeline 1 is mainly excited by the compressor. A vibration model of the pipeline counterweight structure under different compressor frequencies is established. By adjusting the weight and position of the adjustable counterweight 3, the peak value and mean value of the vibration response of pipeline 1 are observed. When the peak value and mean value of the vibration response of pipeline 1 are at their minimum, the pipeline counterweight structure has the best effect on suppressing resonance of pipeline 1 under this kind of excitation. The weight and position of the adjustable counterweight 3 at this time are recorded and used as the preset weight and preset position.

[0092] In a specific embodiment, reference is made to... Figure 9 The adjustable counterweight 3 is controlled to a preset counterweight based on the real-time operating frequency of the external excitation, and simultaneously controlled to move to a preset position, including:

[0093] When the operating frequency of the compressor remains constant, the preset counterweight and preset position of the adjustable counterweight block 3 remain unchanged.

[0094] When the operating frequency of the compressor changes, adjust the preset counterweight and preset position of the adjustable counterweight block 3.

[0095] Specifically, the first step is to obtain the frequency of implementation of external incentives;

[0096] Based on the real-time operating frequency of the acquired external stimulus, the preset weight and preset position of the adjustable counterweight 3 are obtained.

[0097] Adjust the weight and position of the adjustable counterweight 3 according to whether the compressor operating frequency changes.

[0098] Example 3

[0099] This invention provides an air conditioner, see reference. Figure 8 The air conditioner includes the pipe counterweight structure of Embodiment 1.

[0100] Specifically, the air conditioner includes a base 5 and a compressor and a pipeline counterweight structure disposed on the base 5. The pipeline counterweight structure is sleeved on the compressor pipeline to achieve the purpose of vibration reduction and noise reduction. The air conditioner provided in this embodiment of the invention is designed based on the pipeline counterweight structure of Embodiment 1. Therefore, the beneficial effects of the air conditioner are all the beneficial effects of the pipeline counterweight structure of Embodiment 1, and will not be repeated here.

[0101] In summary, it is readily understood by those skilled in the art that, without conflict, the aforementioned advantageous technical features can be freely combined and superimposed.

[0102] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A pipeline counterweight structure, characterized in that, The pipeline counterweight structure is sleeved on the pipeline for vibration damping. The pipeline counterweight structure includes a shell, an adjustable counterweight block disposed within the shell, a displacement drive component, and a controller. The adjustable counterweight block is slidably disposed within the shell. The displacement drive component is disposed on the shell for driving the adjustable counterweight block to slide radially along the pipeline. The controller is electrically connected to the displacement drive component, and the displacement drive component is connected to the adjustable counterweight block for adjusting the weight and position of the adjustable counterweight block. The displacement driving component includes a lift, the lifting end of which is connected to the adjustable counterweight and is used to drive the adjustable counterweight to slide. The adjustable counterweight includes a counterweight liquid containing structure, which includes a first valve plate and a second valve plate spaced radially from the first valve plate in the pipeline. The first valve plate, the second valve plate, the outer wall of the pipeline, and the inner wall of the housing form a chamber for containing the counterweight liquid. The lifting end of the elevator is connected to the first valve plate or the second valve plate.

2. The pipeline counterweight structure according to claim 1, characterized in that, The adjustable counterweight includes a counterweight liquid containing structure, a connecting pipe, and a liquid storage structure. The counterweight liquid containing structure is connected to one end of the connecting pipe, and the other end of the connecting pipe is connected to the liquid storage structure, for adjusting the weight of the counterweight liquid in the counterweight liquid containing structure.

3. The pipeline counterweight structure according to claim 2, characterized in that, One side of the counterweight liquid containing structure forms a first chamber with the inner wall of one side of the outer shell, and the other side of the counterweight liquid containing structure forms a second chamber with the inner wall of the other side of the outer shell.

4. The pipeline counterweight structure according to claim 3, characterized in that, The displacement drive includes a first pressure regulating component communicating with the first chamber and a second pressure regulating component communicating with the second chamber. The first pressure regulating component and the second pressure regulating component are used to adjust the moving position of the adjustable counterweight.

5. The pipeline counterweight structure according to claim 1, characterized in that, The counterweight liquid containing structure includes a first sealing element disposed at the connection between the first valve plate and the pipeline, and a second sealing element disposed between the first valve plate and the outer shell; And / or, the counterweight fluid containing structure includes a third seal disposed at the connection between the second valve plate and the pipeline, and a fourth seal disposed between the second valve plate and the housing.

6. A control method for a pipeline counterweight structure as described in any one of claims 1 to 5, characterized in that, Includes the following steps: The real-time operating frequency of the external stimulus is obtained, including the real-time operating frequency of the compressor; The adjustable counterweight is controlled to a preset weight based on the real-time operating frequency of the external excitation, and the adjustable counterweight is also controlled to move to a preset position. The preset weight is the weight corresponding to the minimum value of the peak and average value of the pipeline vibration response under the real-time operating frequency of the external excitation, and the preset position is the position corresponding to the minimum value of the peak and average value of the pipeline vibration response under the real-time operating frequency of the external excitation. The preset weight and the preset position are pre-stored in the controller.

7. The control method for the pipeline counterweight structure according to claim 6, characterized in that, Before obtaining the real-time operating frequency of the external stimulus, the following steps are included: The preset weight and preset position of the adjustable counterweight are obtained when the peak and average values ​​of the vibration response of the pipeline are at their minimum under different external excitations.

8. The control method for the pipeline counterweight structure according to claim 7, characterized in that, The preset weight and preset position of the adjustable counterweight are obtained when the peak and mean values ​​of the vibration response of the pipeline are at their minimum under different external excitations, including: When the compressor's real-time operating frequency is 0 and the vehicle is in operation, the acceleration signal generated by the vehicle body excitation on the pipeline, and the weight and position of the adjustable counterweight when the peak and average values ​​of the pipeline's vibration response under the acceleration signal are both at their minimum values, are collected, and the weight and position are determined as the preset weight and preset position corresponding to the external excitation. When the real-time operating frequency of the compressor is not 0 and the vehicle body is in operation, the acceleration signal generated by the excitation of the vehicle body on the pipeline, and the peak value and average value of the vibration response of the pipeline under the acceleration signal are both at their minimum values, the weight and position of the adjustable counterweight are collected, and the weight and position are determined as the preset weight and preset position corresponding to the external excitation. The vehicle body is a structure capable of driving the compressor to move.

9. The control method for the pipeline counterweight structure according to claim 7, characterized in that, The method also includes collecting the preset weight and preset position of the adjustable counterweight when the peak and mean values ​​of the vibration response of the pipeline are at their minimum under different external excitations, and further includes: When the compressor vibration frequency is not 0 and the vehicle body is not running, the acceleration signal generated by the excitation of the vehicle body on the pipeline, and the weight and position of the adjustable counterweight when the peak value and average value of the vibration response of the pipeline under the acceleration signal are both at their minimum values, are collected, and the weight and position are determined as the preset weight and preset position corresponding to the external excitation.

10. The control method for the pipeline counterweight structure according to claim 7, characterized in that, Controlling the adjustable counterweight to a preset weight based on the real-time operating frequency of the external excitation, and simultaneously controlling the adjustable counterweight to move to a preset position, includes: When the operating frequency of the compressor remains constant, the preset weight and preset position of the adjustable counterweight remain unchanged. When the operating frequency of the compressor changes, the preset weight and preset position of the adjustable counterweight are adjusted.

11. An air conditioner, characterized in that, The air conditioner includes the pipeline counterweight structure as described in any one of claims 1 to 5.

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