Vibration damping device and refrigeration system

Abstract

The present invention provides a vibration reduction device and a refrigeration system. The vibration reduction device includes a vibration reduction part, which is used to be installed between the device to be vibration reduced and a base to reduce vibration of the device to be vibration reduced; the vibration reduction part includes: a vibration reduction part body, which has a plurality of accommodating cavities; a magnetorheological fluid, each accommodating cavity is filled with a magnetorheological fluid; a coil, which is connected to the vibration reduction part body, and each accommodating cavity is wound with a coil around the circumference of each accommodating cavity, so as to adjust the stiffness of the magnetorheological fluid in the corresponding accommodating cavity through the coil. The technical solution of the present invention solves the problem of poor vibration reduction effect of the vibration reduction device in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration reduction, and in particular to a vibration reduction device and a refrigeration system. Background Art

[0002] The compressor is the core component of the refrigeration system. Due to the unbalanced inertia force and inertia moment of its internal rotating parts, the compressor may experience problems such as vibration and noise during operation. The vibration of the compressor will also be transmitted to the pipes connected to the compressor, affecting the operation of the entire refrigeration system.

[0003] In the related art, in order to solve the vibration problem of the compressor, a rubber pad is arranged between the compressor and the base, and the characteristics of the rubber material are used to achieve a vibration reduction effect. However, since the stiffness of the rubber pad cannot be changed according to the vibration of the compressor, the vibration reduction effect is poor. Summary of the invention

[0004] The main purpose of the present invention is to provide a vibration reduction device and a refrigeration system to solve the problem of poor vibration reduction effect of the vibration reduction device in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a vibration reduction device is provided, which includes a vibration reduction part, which is used to be installed between a device to be vibration reduced and a base to reduce vibration of the device to be vibration reduced; the vibration reduction part includes: a vibration reduction part body, which has a plurality of accommodating cavities; a magnetorheological fluid, each accommodating cavity is filled with the magnetorheological fluid; a coil, which is connected to the vibration reduction part body, and the circumference of each accommodating cavity is wound with a coil, so as to adjust the stiffness of the magnetorheological fluid in the corresponding accommodating cavity through the coil.

[0006] Furthermore, the vibration reduction device also includes: a controller, which is electrically connected to each coil; a detection unit, which is used to be installed on the device to be vibration reduced to obtain the vibration intensity of the device to be vibration reduced; the detection unit is electrically connected to the controller so that the controller adjusts the stiffness of the magnetorheological fluid in each accommodating cavity according to the vibration intensity.

[0007] Furthermore, the detection unit includes: three vibration sensors, which are arranged at intervals on the device to be damped, and the three vibration sensors are all electrically connected to the controller.

[0008] Furthermore, each coil is embedded in the vibration reduction part body; the vibration reduction part body has an avoidance hole, and the end of the coil extends out of the avoidance hole and is electrically connected to the controller.

[0009] Furthermore, the vibration damping part body is made of rubber material; the vibration damping device also includes: a connecting part, which is arranged on the vibration damping part body, and the vibration damping part body is connected to the device to be damped through the connecting part; the connecting part is made of metal material, the connecting part and the vibration damping part body are connected by a vulcanization process, the connecting part and the device to be damped are welded, and the vibration damping part body and the base are connected by a vulcanization process.

[0010] Furthermore, the vibration damping part body is arranged in an annular shape, the vibration damping part body has a clearance hole, and a plurality of accommodating cavities are arranged at circumferential intervals around the vibration damping part body; the connecting part is arranged in an annular shape; along the axial direction of the connecting part, the connecting part includes a first connecting plate segment and a second connecting plate segment connected to each other, the outer diameter of the first connecting plate segment is greater than the outer diameter of the second connecting plate segment, and the outer diameter of the second connecting plate segment is equal to the diameter of the clearance hole; when the connecting part is arranged on the vibration damping part body, the first connecting plate segment is fitted with the vibration damping part body, and the second connecting plate segment extends into the clearance hole.

[0011] Further, along the axial direction of the connecting portion, the length of the second connecting plate segment is smaller than the length of the vibration-damping portion body.

[0012] Further, the outer diameter of the first connecting plate section is equal to the outer diameter of the vibration reduction part body.

[0013] Furthermore, the device to be damped is a compressor; the connecting portion is arranged in a ring shape, and has a mounting hole, and the diameter of the mounting hole is equal to the outer diameter of the tank body of the compressor.

[0014] According to another aspect of the present invention, a refrigeration system is provided, the refrigeration system comprising: a base; a compressor, the compressor is arranged on the base, the compressor is a device to be damped; a vibration damping device, the vibration damping device is the above-mentioned vibration damping device, and the vibration damping part of the vibration damping device is installed between the compressor and the base.

[0015] By applying the technical solution of the present invention, the magnetorheological fluid in a receiving chamber and the corresponding coil form a vibration reduction unit. By adjusting the magnitude of the current in the coil, the magnetic field strength in the corresponding receiving chamber can be changed, thereby changing the stiffness of the magnetorheological fluid in the receiving chamber. The vibration reduction part of the vibration reduction device provided by the present application has a plurality of vibration reduction units, so that the vibration reduction device to be vibration-reduced can be reduced by adjusting the stiffness of each vibration reduction unit, thereby facilitating improving the vibration reduction effect of the vibration reduction device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A structural schematic diagram showing a partial structure of a refrigeration system according to an optional embodiment of the present invention;

[0018] Figure 2 Shows Figure 1 Schematic diagram of the cross-sectional structure at AA in the middle;

[0019] Figure 3 Shows Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0020] Figure 4 Shows Figure 1 An enlarged structural diagram of the vibration reduction device and the base;

[0021] Figure 5 Shows Figure 1 A schematic diagram of a top view of the connecting portion of the vibration reduction device;

[0022] Figure 6 Shows Figure 5 Schematic diagram of the main structure of the connection part.

[0023] The above drawings include the following reference numerals:

[0024] 1. Device to be damped; 2. Base; 3. Vibration damping device; 100. Vibration damping part; 110. Vibration damping part body; 111. Accommodating chamber; 120. Magnetorheological fluid; 130. Coil; 200. Connecting part; 210. First connecting plate section; 220. Second connecting plate section; 300. Detecting part; 310. Vibration sensor. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In order to solve the problem of poor vibration reduction effect of the vibration reduction device in the prior art, the present invention provides a vibration reduction device and a refrigeration system.

[0027] like Figures 1 to 6As shown, the vibration reduction device includes a vibration reduction part 100, which is used to be installed between the device to be vibration reduced 1 and the base 2 to reduce vibration of the device to be vibration reduced 1; the vibration reduction part 100 includes a vibration reduction part body 110, a magnetorheological fluid 120 and a coil 130, the vibration reduction part body 110 has a plurality of accommodating cavities 111, each accommodating cavity 111 is filled with the magnetorheological fluid 120, the coil 130 is connected to the vibration reduction part body 110, and the coil 130 is wound around the circumference of each accommodating cavity 111, so as to adjust the stiffness of the magnetorheological fluid 120 in the corresponding accommodating cavity 111 through the coil 130.

[0028] In this embodiment, the magnetorheological fluid 120 in a receiving cavity 111 and the corresponding coil 130 form a vibration reduction unit, and the magnitude of the current in the coil 130 can be adjusted to change the magnetic field strength in the corresponding receiving cavity 111, thereby changing the stiffness of the magnetorheological fluid 120 in the receiving cavity 111. The vibration reduction part 100 of the vibration reduction device provided in the present application has a plurality of vibration reduction units, so that the vibration reduction device 1 can be damped by adjusting the stiffness of each vibration reduction unit, thereby facilitating improving the vibration reduction effect of the vibration reduction device.

[0029] like Figure 1 As shown, the vibration reduction device further includes a controller and a detection unit 300. The controller is electrically connected to each coil 130. The detection unit 300 is used to be installed on the device 1 to be vibration reduced to obtain the vibration intensity of the device 1 to be vibration reduced. The detection unit 300 is electrically connected to the controller so that the controller adjusts the stiffness of the magnetorheological fluid 120 in each accommodating cavity 111 according to the vibration intensity. In this way, the vibration reduction unit 100 and the detection unit 300 cooperate to achieve dynamic control of the stiffness of the magnetorheological fluid 120 in each accommodating cavity 111, so that the stiffness of the magnetorheological fluid 120 matches the vibration state of the device 1 to be vibration reduced to achieve the best vibration reduction effect.

[0030] In a specific implementation, the controller is used to monitor the vibration of the vibration reduction device 1 and is also used to control the magnetic field intensity in the accommodating cavity 111 of the vibration reduction part 100 of the vibration reduction device 3 .

[0031] Optionally, the detection unit 300 includes three vibration sensors 310, which are arranged at intervals on the device to be damped 1, and the three vibration sensors 310 are electrically connected to the controller. In this way, the vibration signal of the device to be damped 1 is collected by the three vibration sensors 310, and the collected vibration signal is sent to the controller. The controller calculates the vibration intensity at each damping unit according to the collected vibration signal, and controls the current intensity in the coil 130 of each damping unit according to the vibration intensity, so as to adjust the magnetic field intensity in the accommodating cavity 111 of each damping unit, and finally realizes dynamic control of the stiffness of each damping unit.

[0032] like Figure 1 As shown, when the vibration reduction device 1 is a compressor, three points are selected on the side wall of the compressor tank to arrange vibration sensors 310 to collect the vibration signal of the compressor, and the vibration intensity at each corresponding vibration reduction unit point on the compressor can be calculated using the vibration signals of the three points and the rigid body kinematic equation.

[0033] The method for the controller to calculate the vibration intensity at each vibration reduction unit according to the collected vibration signal specifically includes: establishing a coordinate system for the vibration reduction device 1 and the vibration reduction device 3, selecting three points on the vibration reduction device 1 to be reduced to arrange vibration sensors 310, the three vibration sensors 310 send the collected vibration signals of the vibration reduction device 1 to the controller, and the controller substitutes the collected vibration signals of the three known points into the rigid body kinematic equation (1) for calculation, thereby obtaining , and , and then substitute the coordinates of each vibration reduction unit into the rigid body kinematics equation (1), and then the vibration intensity of each vibration reduction unit can be calculated. The rigid body kinematics equation (1) is as follows:

[0034] ⑴.

[0035] Optionally, the vibration sensor is an electrodynamic sensor. When a moving conductor cuts magnetic lines of force under a fixed magnetic field force, an electromotive force is induced at both ends of the conductor. The generated electromotive force is proportional to the vibration intensity of the vibration reduction device being measured.

[0036] like Figure 3 As shown, each coil 130 is embedded in the vibration reduction body 110; the vibration reduction body 110 has an avoidance hole, and the end of the coil 130 extends out of the avoidance hole and is electrically connected to the controller. In this way, the coil 130 is fixed to the vibration reduction body 110 by embedding, so that the coil 130 is prevented from moving relative to the vibration reduction body 110, which has the advantages of simple and reliable assembly.

[0037] Optionally, the vibration reduction body 110 is made of rubber material; Figures 1 to 6 As shown, the vibration reduction device further includes a connecting portion 200, which is arranged on the vibration reduction body 110, and the vibration reduction body 110 is connected to the device 1 to be vibration reduced through the connecting portion 200; the connecting portion 200 is made of metal material, and the connecting portion 200 and the vibration reduction body 110 are connected by a vulcanization process, the connecting portion 200 and the device 1 to be vibration reduced are welded, and the vibration reduction body 110 and the base 2 are connected by a vulcanization process. The vibration reduction body 110 made of rubber material has good vibration reduction and buffering functions; the connecting portion 200 made of metal material is conducive to connecting the vibration reduction device 3 with the device 1 to be vibration reduced.

[0038] Optionally, the connecting part 200 is made of steel.

[0039] like Figure 1 and Figure 2 As shown, the vibration reduction body 110 is arranged in an annular shape, and the vibration reduction body 110 has a clearance hole, and a plurality of accommodating cavities 111 are arranged at intervals around the circumference of the vibration reduction body 110; Figures 2 to 6 As shown, the connection part 200 is arranged in an annular shape; along the axial direction of the connection part 200, the connection part 200 includes a first connecting plate segment 210 and a second connecting plate segment 220 connected to each other, the outer diameter of the first connecting plate segment 210 is greater than the outer diameter of the second connecting plate segment 220, and the outer diameter of the second connecting plate segment 220 is equal to the diameter of the clearance hole; when the connection part 200 is arranged on the vibration reduction part body 110, the first connecting plate segment 210 fits with the vibration reduction part body 110, and the second connecting plate segment 220 extends into the clearance hole. In this way, installing the second connecting plate segment 220 in the clearance hole is conducive to preventing the vibration reduction part body 110 from deforming along its radial direction; the vibration reduction part body 110 arranged in an annular shape is arranged around the circumference of the vibration reduction device 1 to be reduced, which is conducive to improving the vibration reduction effect.

[0040] like Figure 1 and Figure 4 As shown, along the axial direction of the connecting portion 200, the length of the second connecting plate segment 220 is less than the length of the vibration reduction portion body 110. In this way, it is possible to avoid the second connecting plate segment 220 being too long to affect the vibration reduction effect of the vibration reduction device.

[0041] Optionally, by adjusting the length of the second connecting plate segment 220 , it is possible to prevent the vibration reduction body 110 from deforming in its radial direction and avoid the second connecting plate segment 220 being too long to affect the vibration reduction effect of the vibration reduction device.

[0042] Optionally, the outer diameter of the first connecting plate segment 210 is equal to the outer diameter of the vibration damping body 110. In this way, the first connecting plate segment 210 and the vibration damping body 110 can be conveniently connected together by vulcanization process, and the assembled vibration damping device 3 has a good appearance.

[0043] Optionally, the vibration reduction device 1 is a compressor; the connecting portion 200 is arranged in an annular shape, and has a mounting hole, and the diameter of the mounting hole is equal to the outer diameter of the tank body of the compressor. In this way, part of the structure of the tank body of the compressor extends into the mounting hole, which is conducive to the stable and reliable installation of the compressor on the vibration reduction device 3.

[0044] Optionally, the outer peripheral wall of the tank body of the compressor is welded to the inner wall of the mounting hole.

[0045] Optionally, the connecting part 200 is used as a metal gasket and welded to the bottom of the tank body of the compressor; the first connecting plate segment 210 and the second connecting plate segment 220 are vulcanized with the vibration damping part 100 to form an integral structure; the vibration damping part 100 and the base 2 are made into an integral structure by vulcanization process.

[0046] like Figure 1 As shown, the refrigeration system includes a compressor, a base 2 and a vibration reduction device 3, the compressor is the device to be vibration-reduced 1, the compressor is arranged on the base 2, the vibration reduction device 3 is the vibration reduction device described above and below, and the vibration reduction part 100 of the vibration reduction device 3 is installed between the compressor and the base 2. Since the stiffness of the vibration reduction part 100 can be changed according to the vibration intensity of the compressor, the vibration reduction device 3 can have a good vibration reduction effect on the compressor, thereby avoiding the vibration of the pipeline caused by the vibration of the compressor during the use of the refrigeration system, which is beneficial to reduce noise and ensure the reliable and safe operation of the refrigeration system.

[0047] Specifically, compared with traditional rubber foot pads, due to the presence of magnetorheological fluid, the stiffness of the vibration damping part 100 of the vibration damping device 3 can be matched with the vibration intensity of the device to be damped 1 in real time, so that the vibration control of the compressor can achieve a better effect, wherein the stiffness of the vibration damping part 100 increases with the increase of the vibration intensity of the compressor.

[0048] Among them, the rheological properties of the magnetorheological fluid will change dramatically under the action of an external magnetic field, and its viscosity can increase rapidly within milliseconds. It can change from a liquid state with good flow characteristics to a solid-like state in a short time. The vibration reduction device 3 provided in this application is designed according to the characteristics of the magnetorheological fluid. The stiffness of the vibration reduction part 100 is adapted to the vibration amplitude of the compressor so as to realize dynamic control of the vibration of the compressor, thereby realizing better control of the vibration of the compressor.

[0049] Optionally, the vibration sensor 310 is connected to the side wall of the tank body of the compressor, and three vibration sensors 310 are arranged at equal intervals around the circumference of the tank body.

[0050] The vibration-damping part 100 of the vibration-damping device 3 is arranged between the tank body and the base 2 of the compressor to avoid rigid contact between the tank body and the base 2 of the compressor. At the same time, the stiffness of the vibration-damping part 100 can change with the stress caused by the vibration of the compressor, which is beneficial to improve the vibration-damping effect of the vibration-damping device 3 on the compressor.

[0051] The vibration sensor 310 collects the vibration signal of the compressor tank and the controller receives the signal, thereby controlling the change of the external magnetic field of the multiple accommodating cavities 111 of the vibration reduction unit 100 array, and realizing dynamic control of the stiffness of the vibration reduction unit 100 to match it with the vibration state of the compressor, so as to achieve the maximum vibration reduction effect of the compressor.

[0052] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0053] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0054] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0055] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0056] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vibration reduction device, characterized in that: The vibration reduction device comprises a vibration reduction portion (100), wherein the vibration reduction portion (100) is used to be installed between the device to be vibration reduced (1) and a base (2) to reduce vibration of the device to be vibration reduced (1); The vibration reduction part (100) comprises: A vibration reduction portion body (110), wherein the vibration reduction portion body (110) has a plurality of accommodating cavities (111); Magnetorheological liquid (120), each of the accommodating chambers (111) is filled with the magnetorheological liquid (120); a coil (130), the coil (130) being connected to the vibration reduction part body (110), and the coil (130) being wound around the circumference of each accommodating cavity (111), so as to adjust the stiffness of the magnetorheological fluid (120) in the corresponding accommodating cavity (111) through the coil (130); The vibration reduction device further comprises: A connecting portion (200), the connecting portion (200) being arranged on the vibration reduction portion body (110), the vibration reduction portion body (110) being connected to the device to be vibration reduced (1) via the connecting portion (200); The vibration damping part body (110) has a clearance hole. Along the axial direction of the connecting part (200), the connecting part (200) comprises a first connecting plate segment (210) and a second connecting plate segment (220) connected to each other. The outer diameter of the first connecting plate segment (210) is greater than the outer diameter of the second connecting plate segment (220), and the outer diameter of the second connecting plate segment (220) is equal to the diameter of the clearance hole. When the connecting part (200) is arranged on the vibration damping part body (110), the first connecting plate segment (210) fits the vibration damping part body (110), and the second connecting plate segment (220) extends into the clearance hole.

2. The vibration reduction device according to claim 1, characterized in that: The vibration reduction device further comprises: a controller, the controller being electrically connected to each of the coils (130); A detection part (300) is used to be mounted on the device to be damped (1) to obtain the vibration intensity of the device to be damped (1); the detection part (300) is electrically connected to the controller so that the controller adjusts the stiffness of the magnetorheological fluid (120) in each of the accommodating cavities (111) according to the vibration intensity.

3. The vibration reduction device according to claim 2, characterized in that: The detection unit (300) comprises: Three vibration sensors (310), the three vibration sensors (310) are arranged at intervals on the device to be damped (1), and the three vibration sensors (310) are all electrically connected to the controller.

4. The vibration reduction device according to claim 2, characterized in that: Each coil (130) is embedded in the vibration reduction part body (110); the vibration reduction part body (110) has an avoidance hole, and the end of the coil (130) extends out from the avoidance hole and is electrically connected to the controller.

5. The vibration reduction device according to claim 1, characterized in that: The vibration-damping part body (110) is made of a rubber material; the connecting part (200) is made of a metal material; the connecting part (200) and the vibration-damping part body (110) are connected by a vulcanization process; the connecting part (200) and the device to be damped (1) are welded; and the vibration-damping part body (110) and the base (2) are connected by a vulcanization process.

6. The vibration reduction device according to claim 5, characterized in that: The vibration reduction part body (110) is arranged in an annular shape, and a plurality of the accommodating cavities (111) are arranged at intervals in the circumferential direction of the vibration reduction part body (110); The connecting portion (200) is arranged in a ring shape.

7. The vibration reduction device according to claim 6, characterized in that: Along the axial direction of the connecting portion (200), the length of the second connecting plate segment (220) is smaller than the length of the vibration-damping portion body (110).

8. The vibration reduction device according to claim 6, characterized in that: The outer diameter of the first connecting plate section (210) is equal to the outer diameter of the vibration damping part body (110).

9. The vibration reduction device according to claim 5, characterized in that: The device to be damped (1) is a compressor; the connecting portion (200) is arranged in a ring shape, the connecting portion (200) has a mounting hole, and the diameter of the mounting hole is equal to the outer diameter of the tank body of the compressor.

10. A refrigeration system, characterized in that: The refrigeration system comprises: Base (2); A compressor, the compressor being arranged on the base (2), the compressor being the device to be vibration-damped (1); A vibration damping device (3), wherein the vibration damping device (3) is the vibration damping device according to any one of claims 1 to 9, and the vibration damping part (100) of the vibration damping device (3) is installed between the compressor and the base (2).

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