Damping device, compressor and air conditioner

Abstract

The application provides a damping device, a compressor and an air conditioner. The damping device comprises a supporting bottom shell, a conductive part arranged on the inner side of the supporting bottom shell, a bottom end of the conductive part connected to the bottom wall of the supporting bottom shell, a top end of the conductive part extending out of the top opening of the supporting bottom shell, a connecting top cover, a lifting sleeve arranged on the top end of the conductive part, used for connecting the bottom part of a target equipment, an inner insulation sleeve and an outer insulation sleeve, the inner and outer insulation sleeves being connected to the top end of the bottom wall and extending to the top opening, a containing space for containing magnetic fluid being formed between the inner and outer insulation sleeves, an upper sealing ring arranged on the inner side of the top opening, a lower sealing ring arranged between the bottom wall, the side wall of the supporting bottom shell and the conductive part, a plurality of first permanent magnets arranged on the inner side wall of the supporting bottom shell, a plurality of second permanent magnets arranged on the inner side wall of the supporting bottom shell and respectively arranged in a central symmetry with the first permanent magnets in the axial direction of the supporting bottom shell, and the polarity of the second permanent magnets being opposite to that of the first permanent magnets, and a lifting piston arranged on the outer side of the conductive part and connected to the connecting top cover.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to a vibration damping device, a compressor, and an air conditioner. Background Technology

[0002] In the traditional commercial air conditioning industry, the compressor, as the core driving component of the refrigeration system, generates significant vibration and noise during operation. This vibration not only puts stress on the internal structure of the air conditioning equipment, affecting its stability and lifespan, but also transmits it to the external environment through the contact points between the air conditioning equipment and the ground or supporting structure, thus generating noise pollution. Furthermore, compressor vibration may also trigger resonance in other components within the air conditioning equipment, further exacerbating the noise problem and affecting the overall performance of the air conditioning system and the user experience.

[0003] Therefore, the industry currently widely uses vibration-damping materials as compressor feet to absorb and dissipate vibration energy, thereby reducing the mechanical vibration generated by the compressor during operation. The sound insulation properties of these materials also reduce the propagation of noise generated during compressor operation. However, existing compressor feet are simply placed directly on the bottom of the compressor, resulting in limited vibration damping performance. During operation or transportation, the compressor will still vibrate vertically, making it difficult to avoid excessive localized pipeline stress or even pipeline rupture caused by excessive vertical vibration. Furthermore, traditional compressor feet can only reduce the vertical vibration of the compressor to a certain extent and cannot limit the horizontal torsional amplitude of the compressor. Summary of the Invention

[0004] This invention proposes a vibration damping device, a compressor, and an air conditioner to solve the technical problem in the prior art where compressor feet are directly installed at the bottom of the compressor, resulting in limited vibration damping and noise reduction performance during compressor operation and transportation.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0006] This invention provides a vibration damping device, comprising:

[0007] Supporting the bottom shell;

[0008] A conductive element is located inside the supporting base shell. The bottom end of the conductive element is connected to the bottom wall of the supporting base shell, and the top end of the conductive element extends out of the top opening of the supporting base shell.

[0009] The connecting top cover can be lifted and fitted onto the top of the conductive component for connecting to the bottom of the target device;

[0010] The inner insulating sleeve and the outer insulating sleeve are nested together and connected to the top of the bottom wall and extend to the top opening. The inner insulating sleeve and the outer insulating sleeve form a receiving space to accommodate the magnetofluid.

[0011] The upper sealing ring is located inside the top opening to seal the connection between the top opening and the connecting top cover;

[0012] The lower sealing ring is located between the bottom wall, the side wall supporting the bottom shell, and the conductive component to seal the connection between the conductive component and the bottom wall.

[0013] Several first permanent magnets are disposed on the inner sidewall of the supporting bottom shell;

[0014] Several second permanent magnets are disposed on the inner sidewall of the supporting bottom shell and are centrally symmetrical with respect to each first permanent magnet with respect to the axis of the supporting bottom shell, and the polarity of the second permanent magnets is opposite to that of the first permanent magnets.

[0015] The lifting piston is sleeved on the outside of the conductive component and connected to the connecting top cover.

[0016] Furthermore, the vibration damping device also includes:

[0017] Several third permanent magnets are disposed on the outer side wall of the outer insulating sleeve and respectively matched with the corresponding first permanent magnets, and the polarity of the third permanent magnets is the same as that of the first permanent magnets;

[0018] Several fourth permanent magnets are disposed on the outer side wall of the outer insulating sleeve and are centrally symmetrical with each of the third permanent magnets to support the bottom shell along the axis, and the polarity of the fourth permanent magnets is opposite to that of the first permanent magnets.

[0019] Preferably, the lifting piston is annular and has multiple magnetohydrodynamic channels evenly spaced along its circumference.

[0020] Preferably, the magnetofluid channel is a spiral channel hole that extends spirally along the axial direction of the lifting piston.

[0021] Preferably, the number of magnetofluid channels is four.

[0022] Furthermore, the vibration damping device also includes:

[0023] A flexible hose connects the top cover and the lower sealing ring.

[0024] Preferably, the conductive element is a conductive rod.

[0025] Preferably, the conductive rod is a hollow rod, and the hollow inner and outer walls of the conductive rod are coated with a conductive coating.

[0026] The present invention also provides a compressor, including a housing and a support foot pad disposed at the bottom of the housing, and further including the above-mentioned vibration damping device, with a connecting top cover connected to the support foot pad.

[0027] The present invention also provides an air conditioner, including the compressor described above.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The vibration damping device provided by this invention can be used at the foot pads of a compressor to suppress the vibration generated by the compressor during high-speed operation. It adopts a controllable damping damping block, which can achieve the purpose of controllable damping of the damping block under external excitation, reducing the resonant displacement of the compressor, improving noise, reducing transportation stress, reducing operating stress, and increasing service life. Attached Figure Description

[0030] To more clearly illustrate the technical solution proposed by this invention, the invention will be described in detail below with reference to embodiments and accompanying drawings. It should be understood that the embodiments and drawings described in the following detailed description and specification are merely some embodiments of this invention, and those skilled in the art can make changes to these drawings within the framework of this invention.

[0031] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the vibration reduction device of the present invention;

[0032] Figure 2 for Figure 1 A cross-sectional structural schematic diagram of an embodiment of the vibration damping device;

[0033] Figure 3 for Figure 2 A magnified schematic diagram of a portion of region A in the diagram;

[0034] Figure 4 for Figure 1 A perspective structural schematic diagram of an embodiment of the vibration damping device;

[0035] Figure 5 This is a front view schematic diagram of an embodiment of the vibration reduction device of the present invention;

[0036] Figure 6 This is a side view of an embodiment of the vibration damping device of the present invention;

[0037] Figure 7 This is a top view schematic diagram of an embodiment of the vibration reduction device of the present invention;

[0038] Figure 8 This is a bottom view schematic diagram of an embodiment of the vibration reduction device of the present invention.

[0039] The main markings in the attached figures are as follows:

[0040] 1. Supporting base shell; 11. Bottom wall; 12. Side wall; 13. Top opening;

[0041] 2. Conductive components;

[0042] 3. Connect the top cover;

[0043] 4. Inner insulating sleeve;

[0044] 5. External insulating sleeve;

[0045] 6. Magnetofluids;

[0046] 7. Install the sealing ring;

[0047] 8. Lower sealing ring;

[0048] 9. The first permanent magnet;

[0049] 10. Second permanent magnet;

[0050] 20. Lifting piston; 201. Spiral channel hole. Detailed Implementation

[0051] To make the technical problem to be solved, the technical solution and the beneficial effects of the present invention clearer, the following description is provided in conjunction with the appendix. Figure 1-8 The present invention will be further described in detail below with reference to the embodiments.

[0052] Please refer to the following: Figure 1-8 The vibration damping device provided by the present invention includes:

[0053] The supporting base shell 1 serves as the main supporting structure for the vibration damping device, and the interior of the supporting base shell 1 forms a sealed chamber.

[0054] Conductive component 2 is located inside the supporting base shell 1. The bottom end of the conductive component 2 is connected to the bottom wall 11 of the supporting base shell 1, and the top end of the conductive component 2 extends out of the top opening 13 of the supporting base shell.

[0055] The top cover 3 is detachably mounted on the top of the conductive part 2 and is used to connect to the bottom of the target device. The target device can be the casing of a compressor, specifically the support pads at the bottom of the compressor casing.

[0056] Inner insulating sleeve 4 and outer insulating sleeve 5 are nested together and connected to the top of bottom wall 11 and extend to top opening 13. The inner insulating sleeve 4 and outer insulating sleeve 5 form a receiving space to receive the magnetic fluid 6.

[0057] Upper sealing ring 7 is provided inside the top opening 13 to seal the connection between the top opening 13 and the connecting top cover 3, so as to ensure that no magnetic fluid 6 leakage occurs at the corresponding position.

[0058] The lower sealing ring 8 is located between the bottom wall 11, the side wall 12 supporting the bottom shell 1 and the conductive element 2 to seal the connection between the conductive element 2 and the bottom wall 11, so as to ensure that no magnetic fluid 6 leakage occurs at the corresponding position.

[0059] A plurality of first permanent magnets 9 are disposed on the inner sidewall 12 of the supporting bottom shell 1, and their magnetic poles are N poles or S poles;

[0060] A plurality of second permanent magnets 10 are disposed on the inner sidewall 12 of the supporting bottom shell 1 and are centrally symmetrical with respect to each of the first permanent magnets 9 about the axis of the supporting bottom shell 1, and the polarity of the second permanent magnets 10 is opposite to that of the first permanent magnets 9.

[0061] The lifting piston 20 is sleeved on the outside of the conductive component 2 and connected to the connecting top cover 3. The lifting piston 20 can be driven by the connecting top cover 3 to move up and down synchronously with the target equipment.

[0062] When the air conditioner is running and the compressor is operating, the compressor generates irregular vibrations and displacements under different operating conditions. This causes the connecting top cover 3 to push the lifting piston 20 in a reciprocating linear motion within the vibration damping device under the action of external force (compressor vibration). The acceleration of the lifting piston 20 varies with the intensity of the compressor vibration. When the lifting piston 20 generates vertical displacement, it cuts the magnetic field generated by the permanent magnet inside the vibration damping device. As the magnetic flux changes, the lifting piston 20 generates a current that flows to the magnetofluid 6 (due to the inherent characteristics of the magnetofluid 6, its damping varies with the magnitude of the current). Therefore, the more intense the compressor vibration, the greater the damping of the vibration damping device, which reduces the vertical vibration displacement of the compressor and achieves dynamic balance in the vertical direction of the compressor.

[0063] The vibration damping device provided by this invention is a torsional vibration damping device with controllable damping magnetic fluid 6, which can be installed on the bottom of target equipment such as compressors (e.g., at the compressor feet at the bottom of the compressor casing). Because a lifting piston 20 with internal magnetic fluid 6 is used as a controllable damping vibration damping block, the vertical vibration displacement of the compressor driven by the lifting piston 20 at its original support position can be reduced during daily operation or packaging and transportation of the air conditioner. This also reduces the resonance amplitude of the compressor input frequency with the fixed frequency of the pipeline, avoiding excessive local pipeline stress or even rupture caused by excessive vertical vibration displacement during daily operation or packaging and transportation of the air conditioner, while simultaneously improving compressor noise.

[0064] Please refer to the following: Figure 1-4 In one embodiment of the vibration damping device provided by the present invention, the vibration damping device further includes:

[0065] Several third permanent magnets are disposed on the outer side wall 12 of the outer insulating sleeve 5 and respectively matched with the corresponding first permanent magnets 9. The polarity of the third permanent magnets is the same as that of the first permanent magnets 9, and their magnetic poles are N poles or S poles.

[0066] Several fourth permanent magnets are disposed on the outer side wall 12 of the outer insulating sleeve 5 and are centrally symmetrical with each of the third permanent magnets to support the axial direction of the bottom shell 1. The polarity of the fourth permanent magnets is opposite to that of the first permanent magnet 9.

[0067] Therefore, to achieve magnetic field control, two sets of permanent magnets are symmetrically installed on the inner wall 12 of the supporting base shell 1 and the outer wall 12 of the outer insulating sleeve 5, respectively. Each set of permanent magnets consists of two permanent magnet units arranged diagonally with N and S poles, meaning that the two permanent magnet units on the same side have the same pole (either both N poles or both S poles), while the permanent magnet units at diagonal positions have different poles. This permanent magnet layout ensures that the magnetic field distribution within the vibration damping device will change significantly when the two sets of permanent magnet units undergo relative displacement or torsion as the target equipment moves up and down.

[0068] In this embodiment, compared with traditional air conditioner vibration damping blocks, this vibration damping device also possesses anti-torsional characteristics. When the compressor experiences horizontal torsional displacement (horizontal rotation around the vertical axis), the connecting top cover 3 causes the outer insulating sleeve 5 and the third and fourth permanent magnets to undergo coaxial angular displacement relative to the supporting bottom shell 1. Since the permanent magnets on the same side of the vibration damping device have the same pole, when the connecting top cover 3 and the supporting bottom shell 1 experience torsional misalignment, the repulsive torque between the same poles increases. This repulsive torque directly acts on the connecting top cover 3, forming a restoring torque that resists torsional motion, thereby significantly increasing the vibration damping device's resistance to horizontal torsion and effectively suppressing the occurrence of torsional resonance in the compressor.

[0069] Since the connecting top cover 3 of the vibration damping device and the lifting piston 20 are in two degrees of freedom of vertical translation and horizontal rotation, and are connected to the bottom of the vibration damping device through an elastic hose (not shown in the figure) and a permanent magnet, the vibration damping device has a better anti-torsion effect on the compressor when the compressor vibrates and displaces violently, thereby achieving dynamic anti-torsion of the compressor.

[0070] Please refer to the following: Figure 1-4 In one embodiment of the vibration damping device provided by the present invention, the lifting piston 20 is annular and has a plurality of magnetofluid channels 6 evenly spaced along the circumference of the lifting piston 20.

[0071] Please refer to the following: Figure 1-4 In a preferred embodiment of the vibration damping device provided by the present invention, the magnetofluid 6 channel is a spiral channel hole 201 that extends spirally along the axial direction of the lifting piston 20, that is, the lifting piston 20 is a spiral hole type piston.

[0072] Please refer to the following: Figure 1-4 In a preferred embodiment of the vibration damping device provided by the present invention, the number of magnetic fluid channels is four.

[0073] Therefore, in this embodiment, when the compressor is subjected to vertical vibration excitation, if the vertical displacement of the connecting top cover 3 connected to the compressor foot pad exceeds a certain range, the lifting piston 20 (spiral hole piston) is fixedly connected to the compressor through the connecting top cover 3 and moves synchronously between the inner insulating sleeve 4 and the outer insulating sleeve 5. This drives the spiral hole piston to cut the radial magnetic field generated by the permanent magnet, thereby generating an induced current between the spiral hole piston and the conductive component 2. In addition, four spiral channel holes 201 are opened on the piston body as magnetic fluid channels, so that the induced current flows through the magnetic fluid 6 in the spiral channel holes 201 at the same time. This causes the chain structure inside the magnetic fluid 6 to rearrange, which is visually manifested as a sharp increase in the viscosity of the magnetic fluid 6 and an overall hardening, thereby generating a huge damping force. As the vertical vibration amplitude of the compressor changes, the damping coefficient of the magnetofluid 6 inside the spiral channel hole 201 increases or decreases accordingly. When the vertical vibration of the compressor is more intense, the lifting piston 20 moves faster and the induced current is greater. As a result, the magnetofluid 6 becomes harder and the damping is higher. Thus, when the damping coefficient of the magnetofluid 6 increases, a negative feedback closed loop is formed. At this time, it becomes more difficult for the magnetofluid 6 to pass through the spiral channel hole 201, effectively suppressing vertical displacement and achieving buffering and vibration reduction effects.

[0074] Please refer to the following: Figure 1-4 In a preferred embodiment of the vibration damping device provided by the present invention, the vibration damping device further includes:

[0075] A flexible hose is connected between the top cover 3 and the lower sealing ring 8.

[0076] Please refer to the following: Figure 1-4 In a preferred embodiment of the vibration damping device provided by the present invention, the elastic hose is a spring hose.

[0077] Please refer to the following: Figure 1-4 In a preferred embodiment of the vibration damping device provided by the present invention, the conductive element 2 is a conductive rod.

[0078] Please refer to the following: Figure 1-4 In a more preferred embodiment of the vibration damping device provided by the present invention, the conductive rod is a hollow rod, and the hollow inner sidewall 12 and outer sidewall 12 of the conductive rod are respectively coated with a conductive coating to ensure that the lifting piston 20 forms a closed current loop with the external circuit through the conductive component 2.

[0079] The present invention also provides a compressor (not shown in the figure), including a housing and a support foot pad disposed at the bottom of the housing, and also including the above-mentioned vibration damping device, with the connecting top cover 3 connected to the support foot pad.

[0080] The present invention also provides an air conditioner (not shown in the figure) including the compressor described above.

[0081] In one embodiment of the compressor provided by the present invention, considering the self-weight of the compressor, the connecting top cover 3, elastic hose, inner insulating sleeve 4, outer insulating sleeve 5 and supporting bottom shell 1 are all made of high-strength lightweight alloy or engineering plastic, which not only meets the load-bearing requirements of the vibration damping device, but also ensures that the vibration damping device has a certain dynamic response sensitivity, and meets the durability, temperature adaptability and installation convenience of the materials in high temperature or low temperature environments.

[0082] In one embodiment of the compressor provided by the present invention, the thickness (height) and shape of the vibration damping device are optimized according to the specific size and vibration characteristics of the compressor to ensure the best vibration damping and noise reduction effect.

[0083] In summary, the vibration reduction device provided by this invention has the following advantages:

[0084] First, it can reduce the vertical vibration of the compressor and provide a certain degree of torsional resistance;

[0085] Second, it helps to improve the noise level of the compressor;

[0086] Third, it can reduce the resonance amplitude of the compressor's input frequency and the pipeline's fixed frequency;

[0087] Fourth, it acts as a lubricant, providing long-term protection for the instruments.

[0088] Fifth, extend service life and avoid unnecessary wear and tear.

[0089] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art should understand that any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vibration damping device, characterized in that, include: Supporting the bottom shell (1); A conductive element (2) is disposed on the inner side of the supporting bottom shell (1). The bottom end of the conductive element (2) is connected to the bottom wall (11) of the supporting bottom shell (1), and the top end of the conductive element (2) extends out of the top opening (13) of the supporting bottom shell. The top cover (3) is mounted on the top of the conductive part (2) in a liftable manner and is used to connect to the bottom of the target device; The inner insulating sleeve (4) and the outer insulating sleeve (5) are nested together and connected to the top of the bottom wall (11) and extend to the top opening (13). The inner insulating sleeve (4) and the outer insulating sleeve (5) form a receiving space for accommodating the magnetic fluid (6). An upper sealing ring (7) is provided on the inside of the top opening (13) to seal the connection between the top opening (13) and the connecting top cover (3); The lower sealing ring (8) is provided between the bottom wall (11), the side wall (12) supporting the bottom shell (1) and the conductive element (2) to seal the connection between the conductive element (2) and the bottom wall (11); Several first permanent magnets (9) are disposed on the inner sidewall (12) of the supporting bottom shell (1); A plurality of second permanent magnets (10) are disposed on the inner sidewall (12) of the supporting bottom shell (1) and are centrally symmetrical with respect to each of the first permanent magnets (9) with respect to the axis of the supporting bottom shell (1), and the polarity of the second permanent magnets (10) is opposite to that of the first permanent magnets (9). The lifting piston (20) is sleeved on the outside of the conductive part (2) and connected to the connecting top cover (3).

2. The vibration damping device as described in claim 1, characterized in that, Also includes: Several third permanent magnets are disposed on the outer side wall (12) of the outer insulating sleeve (5) and respectively matched with the corresponding first permanent magnets (9), and the polarity of the third permanent magnets is the same as that of the first permanent magnets (9). Several fourth permanent magnets are disposed on the outer side wall (12) of the outer insulating sleeve (5) and are centrally symmetrical with each of the third permanent magnets to support the bottom shell (1) along the axis, and the polarity of the fourth permanent magnets is opposite to that of the first permanent magnet (9).

3. The vibration damping device as described in claim 2, characterized in that, The lifting piston (20) is annular and has multiple magnetohydrodynamic (6) channels evenly spaced along the circumference of the lifting piston (20).

4. The vibration damping device as described in claim 3, characterized in that, The magnetofluid (6) channel is a spiral channel hole (201) that extends spirally along the axial direction of the lifting piston (20).

5. The vibration damping device as described in claim 4, characterized in that, The number of channels in the magnetofluid (6) is four.

6. The vibration damping device according to any one of claims 1-5, characterized in that, Also includes: An elastic hose is connected between the connecting top cover (3) and the lower sealing ring (8).

7. The vibration damping device according to any one of claims 1-5, characterized in that, The conductive element (2) is a conductive rod.

8. The vibration damping device as described in claim 7, characterized in that, The conductive rod is a hollow rod, and the hollow inner sidewall (12) and outer sidewall (12) of the conductive rod are respectively coated with a conductive coating.

9. A compressor, comprising a housing and support feet disposed at the bottom of the housing, characterized in that, It also includes the vibration damping device as described in any one of claims 1-8, wherein the connecting top cover (3) is connected to the supporting foot pad.

10. An air conditioner, characterized in that, Includes the compressor as described in claim 9.

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