CN114151304A - Bearing, compressor and refrigeration plant - Google Patents
Bearing, compressor and refrigeration plant Download PDFInfo
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- CN114151304A CN114151304A CN202111470972.3A CN202111470972A CN114151304A CN 114151304 A CN114151304 A CN 114151304A CN 202111470972 A CN202111470972 A CN 202111470972A CN 114151304 A CN114151304 A CN 114151304A
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 13
- 230000009467 reduction Effects 0.000 claims abstract description 31
- 238000013016 damping Methods 0.000 claims description 52
- 230000002829 reductive effect Effects 0.000 claims description 26
- 230000007423 decrease Effects 0.000 claims description 9
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 13
- 230000002401 inhibitory effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 15
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000003584 silencer Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002026 carminative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000003190 viscoelastic substance Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0044—Pulsation and noise damping means with vibration damping supports
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/12—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
The invention discloses a bearing, a compressor and refrigeration equipment, wherein the bearing comprises a body part and a vibration reduction part, the vibration reduction part is connected to one end of the body part along the axial direction, the vibration reduction part is provided with a cantilever section, the cantilever section is arranged around the axial lead of the body part, when the bearing vibrates, the vibration of the body part can be transmitted to the vibration reduction part, so that the cantilever section of the vibration reduction part vibrates to consume the vibration energy of the bearing, thereby inhibiting the vibration response of the bearing, reducing the noise generated by the vibration of the bearing and achieving the purposes of vibration reduction and noise reduction.
Description
Technical Field
The invention relates to the field of compressors, in particular to a bearing, a compressor and refrigeration equipment.
Background
Along with the improvement of the requirement of people on the noise of the air conditioner and the reduction of the cost of each part of the air conditioning system, the noise problem of the compressor is more prominent. Since the magnitude of the compressor vibration noise directly affects the customer's judgment of the comfort level of the air conditioner, it is necessary to further reduce the noise of the compressor. In the related art, sound source positioning finds that the vibration of the pump body is an important cause of noise generated by the compressor, and the bearing is an important component of the pump body, so how to reduce the vibration of the bearing is a technical problem to be solved at present.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a bearing which can inhibit the response of vibration and reduce noise caused by vibration.
The invention also provides a compressor with the bearing.
The invention further provides refrigeration equipment with the compressor.
According to an embodiment of the first aspect of the invention, the bearing comprises:
a body portion;
a vibration damping part connected to one end of the body part along the axial direction;
the vibration reduction part is provided with a cantilever section which is arranged around the axis of the body part.
The bearing according to the embodiment of the first aspect of the invention has at least the following beneficial effects:
the bearing is provided with the body part and the vibration damping part, the vibration damping part is provided with the cantilever section surrounding the axial lead of the body part, when the bearing vibrates, the vibration of the body part can be transmitted to the vibration damping part, so that the cantilever section of the vibration damping part vibrates to consume the vibration energy of the bearing, the vibration response of the bearing is inhibited, the noise generated by the vibration of the bearing is reduced, and the purposes of vibration damping and noise reduction are achieved.
According to some embodiments of the invention, the thickness of at least a part of the cantilever segment is arranged to be equal in thickness or gradually reduced along the direction from the fixed end to the free end.
According to some embodiments of the invention, the cantilever segment comprises a first arm segment and a second arm segment, two ends of the first arm segment are respectively connected with the body part and the second arm segment, the thickness of the first arm segment is set to be equal, and the thickness of the second arm segment is gradually reduced along the direction from the fixed end to the free end.
According to some implementations of the inventionFor example, the thickness of the cantilever segment decreases in a power exponent manner along the direction from the fixed end to the free end, and the power exponent curve h is satisfiedmWherein x is the distance between a point along the extension direction of the cantilever section and the free end, h is the thickness of the cantilever section at the point, A is a constant and is more than 0, m is a power exponent and is more than or equal to 2.
According to some embodiments of the invention, the damping portion is further provided with a weight block connected to the free end.
According to some embodiments of the invention, the weight is a viscoelastic mass.
According to some embodiments of the invention, the body portion is provided with a boss at one end in the axial direction, and the vibration reduction portion is connected to the boss.
According to some embodiments of the invention, the cantilever section is helical, and a maximum equivalent diameter of the cantilever section is less than or equal to an outer diameter of the body portion.
The bearing of the embodiment of the second aspect of the invention is applied to a compressor and comprises:
a body portion;
the vibration damping part is provided with a connecting seat, and the connecting seat is connected to one end of the body part along the axial direction;
the damping part is further provided with an annular plate, the annular plate is wound on the periphery of the connecting seat, and the thickness of the annular plate is arranged in an equal thickness mode or gradually reduced along the direction far away from the connecting seat.
The bearing according to the embodiment of the second aspect of the invention has at least the following beneficial effects:
the bearing is provided with the vibration damping part, and the vibration damping part can absorb the vibration energy of the bearing through the annular plate, so that the vibration response of the bearing is inhibited, the noise caused by the vibration of the bearing is reduced, and the purposes of vibration damping and noise reduction are achieved.
According to some embodiments of the invention, the thickness of the annular plate is arranged or tapered to be equal in thickness along the center of the annular plate towards the outer edge.
According to some embodiments of the invention, the thickness of the annular plate decreases exponentially from the center towards the outer edge.
A compressor according to an embodiment of the third aspect of the present invention comprises a bearing according to the embodiment of the first aspect of the present invention or the embodiment of the second aspect of the present invention.
According to the compressor of the embodiment of the third aspect of the invention, at least the following beneficial effects are achieved:
in the compressor, the bearing according to the first or second aspect of the present invention is provided with the vibration damping portion, and when the vibration of the main body is transmitted to the vibration damping portion, the vibration damping portion can absorb the energy of the vibration, thereby suppressing the vibration response of the bearing, reducing the noise generated by the vibration, and reducing the operating noise of the compressor.
A refrigeration device according to an embodiment of the fourth aspect of the present invention includes the compressor of the embodiment of the third aspect of the present invention.
The refrigeration equipment according to the fourth aspect of the invention has at least the following advantages:
by adopting the compressor in the embodiment of the third aspect of the invention, the bearing of the compressor is provided with the vibration reduction part, and the vibration reduction part can inhibit the vibration response of the bearing, reduce the working noise of the compressor and improve the use comfort of the refrigeration equipment.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic perspective view of a bearing according to some embodiments of the present invention;
FIG. 2 is a top view block diagram of the bearing of FIG. 1;
FIG. 3 is a schematic perspective view of a damping portion of a bearing according to further embodiments of the present invention;
FIG. 4 is a top view structural view of the vibration damping portion of FIG. 3;
FIG. 5 is an enlarged view taken at A in FIG. 4;
FIG. 6 is a schematic perspective view of a bearing according to further embodiments of the present invention;
fig. 7 is a top view structural view of the bearing of fig. 6.
Reference numerals:
a body portion 100; a boss 110; a through-hole 111;
a vibration damping portion 200; a cantilever section 210; a free end 211; a fixed end 212; a first arm segment 213; a second arm segment 214; a connecting section 220; a connecting socket 230; an annular plate 240.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly defined, terms such as set, mounted, connected, assembled, matched and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the terms in the present invention by combining the specific contents of the technical solutions.
Along with the improvement of the requirement of people on the noise of the air conditioner and the reduction of the cost of each part of the air conditioning system, the noise problem of the compressor is more prominent, the judgment of the comfort degree of the air conditioner by a client is directly influenced by the quality of the vibration noise of the compressor, so that the noise of the compressor is necessary to be further reduced, and the satisfaction degree of the client is improved. When the compressor works, the pump body assembly vibrates, and the vibration of the pump body assembly is an important reason causing the compressor to generate noise through sound source positioning discovery, and the bearing is an important component of the pump body assembly, so that how to reduce the vibration of the bearing is the technical problem needing to be solved at present.
In order to solve at least one of the above technical problems, the present invention provides a bearing, which is applied to a pump assembly of a compressor, and is capable of suppressing a vibration response of the pump assembly, and reducing noise generated by the pump assembly due to vibration, thereby achieving the purpose of vibration reduction and noise reduction.
Referring to fig. 1 to 2, a bearing according to an embodiment of the first aspect of the present invention includes a body portion 100 and a damping portion 200, and the damping portion 200 is connected to one end of the body portion 100 in an axial direction. In the compressor, the bearing is mounted on the end surface of the cylinder and is assembled in the inner cavity of the compressor as a part of the pump body assembly, and at this time, the gap between the bearing and the cavity wall of the inner cavity is generally small in the radial direction of the bearing, and the distance between one end of the bearing away from the cylinder and other components is large in the axial direction of the bearing, so that the vibration damping portion 200 can be connected to one end of the body portion 100 in the axial direction when the bearing is manufactured.
Specifically, the damping portion 200 and the main body 100 may be integrally formed, or the damping portion 200 and the main body 100 may be separately formed and then connected and fixed by welding or the like.
Referring to fig. 1 to 4, the damping portion 200 is further provided with a cantilever section 210, and the cantilever section 210 is disposed around the axis of the body portion to constitute a cantilever structure. The cantilever structure has a shock-absorbing characteristic, which can dissipate vibration energy transmitted from the body portion 100.
Referring to fig. 1 and 2, the main body 100 is a main body of the bearing, and has a substantially disc shape, a boss 110 is disposed at a middle portion of one end of the main body 100 in an axial direction, and a through hole 111 is formed at a center of the boss 110 in the axial direction for facilitating penetration of a crankshaft. When the bearing is manufactured, the vibration damping portion 200 may be connected to the sidewall of the boss 110, and at this time, one end of the cantilever section 210 is connected to the sidewall of the boss 110, and the other end thereof is far away from the boss 110 and extends outward and surrounds the axial lead of the body portion 100, so that the occupation of the vibration damping portion 200 on the axial space of the bearing may be reduced.
Referring to fig. 3 and 4, of course, in some embodiments of the present invention, the vibration damping portion 200 may also be connected to another position at one end of the body portion 100 along the axial direction, in which case, the vibration damping portion 200 further includes a connecting section 220, one end of the connecting section 220 is fixedly connected to the body portion 100, and the other end of the connecting section 220 is fixedly connected to the cantilever section 210, and the connecting section 220 may sufficiently transmit the vibration of the body portion 100 to the cantilever section 210.
Referring to fig. 3, specifically, one end of the connecting section 220 along the width thereof protrudes relative to the cantilever section 210, and the connecting section 220 is connected to the body 100 through the protruding end, so that a gap is formed between the cantilever section 210 and the body 100, and thus, the noise caused by collision between the cantilever section 210 and the body 100 when vibrating can be prevented.
The bearing is provided with the body part 100 and the vibration damping part 200, and the vibration damping part 200 is provided with the cantilever section 210, so that when the bearing vibrates, the vibration of the body part 100 can be transmitted to the cantilever section 210, the vibration energy of the bearing is consumed when the cantilever section 210 vibrates, the vibration response of the bearing can be inhibited, the noise generated by the vibration of the bearing is reduced, and the purposes of vibration damping and noise reduction are achieved.
It is understood that in some embodiments of the present invention, the thickness of at least a portion of the cantilever segment 210 may be equally thick along the direction from the fixed end 212 to the free end 211, or the thickness of the cantilever segment 210 gradually decreases along the direction from the fixed end 212 to the free end 211.
Specifically, when the thickness of the cantilever segment 210 is set to be equal in the direction from the fixed end 212 to the free end 211, that is, the thickness of the cantilever segment 210 is substantially the same, the cantilever segment 210 can achieve the effect of narrow-band vibration reduction. Specifically, the cantilever section 210 has a good vibration absorbing effect for vibrations having the same vibration frequency as the resonance frequency of the cantilever section 210 and vibrations having a vibration frequency near the resonance frequency of the cantilever section 210, thereby reducing noise generated by the bearings due to the vibrations.
Referring to fig. 3 and 4, when the thickness of the cantilever segment 210 gradually decreases along the direction from the fixed end 212 to the free end 211, the cantilever segment 210 can achieve the effect of broadband vibration reduction. Specifically, when the vibration is transmitted from the fixed end 212 to the free end 211 of the cantilever section 210, the wave velocity of the vibration is reduced when the thickness of the cantilever section 210 is gradually reduced, so that the waves are collected, and the amplitude of the vibration is increased according to the energy conservation theorem, so that the energy of the vibration can be rapidly consumed. Particularly, for medium-high frequency vibration, the vibration absorbing effect of the cantilever section 210 with the gradually reduced thickness is better, so that the medium-high frequency vibration of the bearing can be effectively inhibited, and medium-high frequency noise generated by the vibration of the bearing is reduced.
Referring to fig. 1 and 2, it will be appreciated that in some embodiments of the present invention, the cantilever segment may also include both of the above-described cantilever beam structures of varying thickness. Specifically, the cantilever section includes a first arm section 213 and a second arm section 214, two ends of the first arm section 213 are respectively connected to the body portion and the second arm section 214, the thickness of the first arm section 213 is set to be equal in thickness, and the thickness of the second arm section 214 is gradually reduced along the direction from the fixed end 212 to the free end 211, so that the cantilever section has the advantages of the cantilever structure with two thicknesses changed.
Referring to fig. 3 to 5, it can be understood that, in some embodiments of the present invention, the thickness of the cantilever segment 210 gradually decreases in a power exponent direction from the fixed end 212 to the free end 211, and satisfies a power exponent curve h ═ a × xmWherein x is the distance between any point along the extending direction of the cantilever segment 210 and the free end 211, h is the thickness of the cantilever segment 210 at the point, A is a constant and A > 0, and m is a power exponent and m is greater than or equal to 2. It will be appreciated that with the free end 211 of the cantilever segment 210 as the origin, x is the distance between the origin and any point on the cantilever segment 210. It should be noted that the extending direction locus of the cantilever segment 210 may be a straight line segment or a curved line segment, and therefore x should be understood as a straight line between the origin and any pointThe length of a segment or the length of a curved segment. That is, the thickness of the cantilever segment 210 decreases exponentially from the fixed end 212 toward the free end 211. For example, the power exponent curve is h 2 ×2The distance between the cantilever section 210 and the free end 211 is 2mm, and the thickness of the corresponding cantilever section 210 is 8 mm; the cantilever section 210 is located at a distance of 1mm from the free end 211, corresponding to a thickness of 2mm of the cantilever section 210. It can be seen that the thickness of the cantilever segment 210 is smaller and varies in a power decreasing manner closer to the free end 211.
It can be understood that, since the thickness of the cantilever section 210 varies in a power exponent manner, the region on the cantilever section 210 that varies in a power exponent manner can also be understood as an acoustic black hole region, and the acoustic black hole effect is that the propagation speed of a wave in the acoustic black hole region is gradually reduced by using the power exponent variation of the geometric parameter or the material characteristic parameter of the thin-wall structure, and the wave speed can be reduced to zero under ideal conditions, so that the phenomenon of reflection does not occur. The acoustic black hole can be used for gathering the wave energy transmitted in the structure at a specific position, so that the acoustic black hole has obvious advantages in the application of vibration and noise reduction of the thin-wall structure, and has the characteristics of wide frequency, high efficiency, simple and flexible implementation method and the like for gathering the waves.
According to the acoustic black hole effect, it can be understood that the cantilever section 210 adopts an acoustic black hole structure, and the thickness of the cantilever section 210 is distributed according to the law that the power exponent is gradually reduced, so that the cantilever section 210 can reduce the propagation speed of the wave in the structure and convert the supersonic wave into the subsonic wave, thereby gathering the broadband wave in a region with a reduced thickness of the structure on a certain spatial scale, playing a role in inhibiting acoustic radiation in the structure, remarkably reducing the vibration response of the bearing and obtaining a good noise reduction effect.
Referring to fig. 5, it can be appreciated that the smaller the thickness h1 of the free end 211 of the cantilever segment 210, the better the acoustic black hole effect that the cantilever segment 210 can perform. However, considering the restrictions of the process and the processing, it is sufficient to set the thickness of the free end 211 to a size equal to or slightly larger than 0.05mm in the actual manufacturing. For example, the thickness of the free end 211 is set to 0.1mm, and at this time, the above size of the cantilever segment 210 can be realized by using the existing process, and meanwhile, the cantilever segment 210 can realize a better vibration damping effect.
It should be noted that, in some embodiments of the present invention, in order to further suppress the low frequency noise of the bearing, the vibration damping portion 200 may further be provided with a weight block (not shown in the figure), the weight block is specifically set according to the vibration frequency to be eliminated, and the weight block is connected to the free end 211 of the cantilever section 210. The consumption of vibration energy can be increased by arranging the balancing weight on the cantilever section 210, so that the vibration absorption effect of the cantilever section 210 on low-frequency vibration is improved, the low-frequency vibration of the bearing is favorably inhibited, and the low-frequency noise of the bearing is reduced.
It can be understood that, adopt the structure that thickness reduces gradually as cantilever degree 210, the balancing weight is installed to cantilever section 210's free end 211 simultaneously, and damping portion 200 all has good effect of inhaling to full frequency channel vibration this moment, can restrain the response of the full frequency channel vibration of bearing to effectively reduce the full frequency channel noise's of bearing production, consequently can obtain better damping noise reduction effect.
It will be appreciated that in some embodiments of the invention, the weight may be a viscoelastic mass, which may be made of rubber or other viscoelastic material. During installation, the viscoelastic mass may be coupled and fixed to the free end 211 of the cantilever segment 210 by vulcanization, bonding, or the like.
The viscoelastic mass block has a damping function, can convert solid mechanical vibration energy into heat energy for dissipation, can effectively reduce vibration and noise without changing a structure, can measure the damping performance of a material according to the vibration energy dissipation capacity of the material, and has a damping coefficient as a standard for evaluating the damping size. Therefore, when the free end 211 of the cantilever segment 210 is connected with the viscoelastic mass, the vibration response of the bearing can be further reduced, and the vibration damping effect of the vibration damping part 200 can be improved.
Of course, in some embodiments of the present invention, the weight block may also be a rigid mass block, the rigid mass block may be made of the same material as the cantilever section 210, and the weight block and the cantilever section 210 are integrally formed during manufacturing, so that the processing is more convenient.
It can be understood that, in order to improve the vibration damping effect, the cantilever segment 210 may be spirally wound along the axis of the body portion 100, so that on one hand, the cantilever segment 210 has a longer length, so that the vibration damping portion 200 has a wider vibration damping frequency band, and on the other hand, the space occupied by the cantilever segment 210 is smaller, so as to reduce the influence of the cantilever segment 210 on other components.
It is understood that in the above embodiment, the maximum equivalent diameter of the spiral cantilever segment 210 is smaller than or equal to the outer diameter of the main body 100, that is, the maximum diameter of the outer ring of the cantilever segment 210 is smaller than or equal to the outer diameter of the main body 100, so as to avoid that the cantilever segment 210 protrudes outward relative to the main body 100 in the radial direction of the main body 100 to affect other components.
It should be noted that the cantilever section 210 may be formed by spirally winding the fixed end 212 outward, where the fixed end 212 is located at an end of an innermost circle of the cantilever section 210; of course, referring to FIG. 4, the cantilever segment 210 may also be formed by spirally winding the fixed end 212 inward, wherein the fixed end 212 is located at the end of the outermost turn of the cantilever segment 210.
Referring to fig. 6 and 7, the bearing according to the second embodiment of the present invention differs from the bearing according to the first embodiment of the present invention mainly in the specific structure of the vibration damping portion 200.
Referring to fig. 7, in particular, the bearing according to the embodiment of the second aspect of the present invention includes a body portion and a vibration damping portion, the vibration damping portion is provided with a connecting seat 230 and an annular plate 240, the connecting seat 230 is connected to one end of the body portion in an axial direction, and the annular plate 240 is wound around an outer periphery of the connecting seat 230. When processing, the annular plate 240 may be integrally formed with the connection seat 230, and the connection seat 230 may be sleeved on the outer circumferential wall of the boss 110 of the body portion 100.
Because the annular plate 240 is wound on the periphery of the connecting seat 230, the annular plate 240 is in a structure similar to a cantilever beam, and the annular plate 240 can absorb the vibration energy of the bearing, so that the vibration response of the bearing is inhibited, the noise caused by the vibration of the bearing is reduced, and the purposes of vibration reduction and noise reduction are achieved.
It will be appreciated that in some embodiments of the invention, the thickness of the annular plate 240 is arranged to be constant or gradually decrease from the center towards the outer edge. The annular plate 240 with the uniform thickness can achieve narrow-band vibration reduction, and the annular plate 240 with the thickness gradually decreasing from the center to the outer edge can achieve wide-band vibration reduction.
Of course, in some embodiments of the invention, the thickness of the annular plate 240 decreases exponentially from the center toward the outer edge. The region with power exponent change on the annular plate 240 can also be understood as an acoustic black hole region, and the acoustic black hole effect is that the propagation speed of waves in the acoustic black hole region is gradually reduced by using the power exponent change of geometric parameters or material characteristic parameters of a thin-wall structure, and the wave speed can be reduced to zero under ideal conditions, so that the phenomenon of reflection does not occur. The acoustic black hole can be used for gathering the wave energy transmitted in the structure at a specific position, so that the acoustic black hole has obvious advantages in the application of vibration and noise reduction of the thin-wall structure, and has the characteristics of wide frequency, high efficiency, simple and flexible implementation method and the like for gathering the waves.
The compressor of the embodiment of the third aspect of the present invention includes the bearing of the embodiment of the first aspect of the present invention or the embodiment of the second aspect of the present invention. The compressor may be a rotary compressor, but may be other types of compressors.
The rotary compressor is described as an example, and the compressor comprises a pump body assembly and a motor assembly, wherein the pump body assembly and the motor assembly are arranged in an inner cavity of a shell. Specifically, the motor assembly is located at the upper part in the inner cavity, and the pump body assembly is located below the motor assembly.
The motor assembly comprises a rotor and a stator, the stator is fixed on the inner wall of the shell, and the rotor can rotate relative to the stator. The rotor is connected with a crankshaft of the pump body assembly and can drive the crankshaft to rotate.
The pump body assembly comprises an air cylinder, an upper bearing, a lower bearing, a silencer and a crankshaft, wherein the upper bearing is installed on the upper end face of the air cylinder in a matched mode, and the lower bearing is installed on the lower end face of the air cylinder in a matched mode, so that a compression cavity is formed inside the air cylinder. The silencer is arranged at the upper end of the upper bearing and used for reducing airflow noise generated when the compression cavity exhausts.
One end of the crankshaft is connected with the rotor, the other end of the crankshaft is sleeved with a piston, the piston is located in the compression cavity, and the piston is driven by the crankshaft to do eccentric rotation motion in the compression cavity, so that the working volume of the compression cavity generates periodic change. The piston and the matched slide sheet divide the compression cavity into a low-pressure cavity and a high-pressure cavity.
The compressor still is equipped with the reservoir usually, and the reservoir is connected with pump body subassembly, provides the refrigerant for pump body subassembly, and the bent axle of pump body subassembly is rotatory under motor element's rotor drive for pump body subassembly can accomplish and inhale, compress, carminative process, and the refrigerant is discharged through the blast pipe of casing after pump body subassembly's compression, then gets into the refrigerating plant circulation.
When the compressor works, the pump body assembly vibrates to enable the compressor to generate working noise. Therefore, the vibration damping part is arranged at one end of the upper bearing or the lower bearing of the pump body assembly, which is far away from the cylinder along the axial direction, and the vibration damping part can absorb the vibration energy of the bearing, so that the vibration response of the bearing can be inhibited, and the working noise of the compressor can be reduced.
The refrigeration equipment of the embodiment of the fourth aspect of the invention comprises the compressor of the embodiment of the third aspect of the invention. The refrigeration equipment can be household appliances such as an air conditioner, a refrigerator and the like, and the refrigeration equipment is provided with the compressor of the embodiment. Since the refrigeration equipment adopts all technical solutions of the compressor of the above embodiment, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (13)
1. Bearing, applied to compressor, characterized by, includes:
a body portion;
a vibration damping part connected to one end of the body part along the axial direction;
the vibration reduction part is provided with a cantilever section which is arranged around the axis of the body part.
2. The bearing of claim 1, wherein: the thickness of at least part of the cantilever section is arranged in an equal thickness mode or gradually reduced along the direction from the fixed end to the free end.
3. The bearing of claim 2, wherein: the cantilever section comprises a first arm section and a second arm section, two ends of the first arm section are respectively connected with the body section and the second arm section, the thickness of the first arm section is in equal thickness arrangement, and the thickness of the second arm section gradually decreases along the direction from the fixed end to the free end.
4. The bearing of claim 1, wherein: the thickness of the cantilever section is gradually reduced in a power exponent along the direction from the fixed end to the free end, and the power exponent curve h is satisfiedmWherein x is the distance between a point along the extension direction of the cantilever section and the free end, h is the thickness of the cantilever section at the point, A is a constant and is more than 0, m is a power exponent and is more than or equal to 2.
5. The bearing of claim 4, wherein: the vibration reduction part is further provided with a balancing weight which is connected with the free end.
6. The bearing of claim 5, wherein: the balancing weight is a viscoelastic mass block.
7. The bearing of claim 1, wherein: the body part is provided with a boss at one axial end, and the vibration damping part is connected with the boss.
8. The bearing of any one of claims 1 to 7, wherein: the cantilever section is spiral, and the maximum equivalent diameter of the cantilever section is smaller than or equal to the outer diameter of the body part.
9. Bearing, applied to compressor, characterized by, includes:
a body portion;
the vibration damping part is provided with a connecting seat, and the connecting seat is connected to one end of the body part along the axial direction;
the vibration reduction part is further provided with an annular plate, and the annular plate is wound on the periphery of the connecting seat.
10. The bearing of claim 9, wherein: the thickness of the annular plate is arranged in an equal thickness mode or gradually reduced towards the outer edge along the center of the annular plate.
11. The bearing of claim 10, wherein: the thickness of the annular plate is gradually decreased from the center to the outer edge in a power exponent manner.
12. Compressor, characterized in that it comprises a bearing according to any one of claims 1 to 11.
13. Refrigeration appliance, characterized in that it comprises a compressor as claimed in claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111470972.3A CN114151304A (en) | 2021-12-03 | 2021-12-03 | Bearing, compressor and refrigeration plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111470972.3A CN114151304A (en) | 2021-12-03 | 2021-12-03 | Bearing, compressor and refrigeration plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114151304A true CN114151304A (en) | 2022-03-08 |
Family
ID=80452968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111470972.3A Pending CN114151304A (en) | 2021-12-03 | 2021-12-03 | Bearing, compressor and refrigeration plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114151304A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5145327A (en) * | 1990-04-11 | 1992-09-08 | Zexel Corporation | Variable capacity vane compressor having an improved bearing for a capacity control element |
| CN104819155A (en) * | 2015-05-08 | 2015-08-05 | 广东美芝制冷设备有限公司 | Crankshaft used for rotary type compressor, rotary type compressor and refrigerating cycle device |
| CN206221267U (en) * | 2016-11-18 | 2017-06-06 | 广东美芝精密制造有限公司 | Compressor and the refrigeration plant with it |
| CN107084112A (en) * | 2017-03-10 | 2017-08-22 | 安徽美芝制冷设备有限公司 | Compressor |
| CN110735987A (en) * | 2019-11-25 | 2020-01-31 | 珠海格力电器股份有限公司 | Pipeline vibration absorber and air conditioning unit |
| CN112727764A (en) * | 2021-01-15 | 2021-04-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump body structure, compressor, air conditioner |
-
2021
- 2021-12-03 CN CN202111470972.3A patent/CN114151304A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5145327A (en) * | 1990-04-11 | 1992-09-08 | Zexel Corporation | Variable capacity vane compressor having an improved bearing for a capacity control element |
| CN104819155A (en) * | 2015-05-08 | 2015-08-05 | 广东美芝制冷设备有限公司 | Crankshaft used for rotary type compressor, rotary type compressor and refrigerating cycle device |
| CN206221267U (en) * | 2016-11-18 | 2017-06-06 | 广东美芝精密制造有限公司 | Compressor and the refrigeration plant with it |
| CN107084112A (en) * | 2017-03-10 | 2017-08-22 | 安徽美芝制冷设备有限公司 | Compressor |
| CN110735987A (en) * | 2019-11-25 | 2020-01-31 | 珠海格力电器股份有限公司 | Pipeline vibration absorber and air conditioning unit |
| CN112727764A (en) * | 2021-01-15 | 2021-04-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump body structure, compressor, air conditioner |
Non-Patent Citations (1)
| Title |
|---|
| SEONGMIN PARK, MINKYU KIM, WONJU JEON: "Experimental validation of vibration damping using an Archimedean spiral acoustic black hole" * |
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Application publication date: 20220308 |
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