CN114151340A - Cylinder, compressor and refrigeration plant - Google Patents

Cylinder, compressor and refrigeration plant Download PDF

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Publication number
CN114151340A
CN114151340A CN202111470777.0A CN202111470777A CN114151340A CN 114151340 A CN114151340 A CN 114151340A CN 202111470777 A CN202111470777 A CN 202111470777A CN 114151340 A CN114151340 A CN 114151340A
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CN
China
Prior art keywords
cylinder
vibration
cantilever section
compressor
cantilever
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111470777.0A
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Chinese (zh)
Inventor
郭莉娟
张肃
叶容君
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Meizhi Compressor Co Ltd
Guangdong Meizhi Precision Manufacturing Co Ltd
Original Assignee
Guangdong Meizhi Compressor Co Ltd
Guangdong Meizhi Precision Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Meizhi Compressor Co Ltd, Guangdong Meizhi Precision Manufacturing Co Ltd filed Critical Guangdong Meizhi Compressor Co Ltd
Priority to CN202111470777.0A priority Critical patent/CN114151340A/en
Publication of CN114151340A publication Critical patent/CN114151340A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F04C18/3562—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0021—Systems for the equilibration of forces acting on the pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/06—Silencing

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

The invention discloses an air cylinder, a compressor and refrigeration equipment, wherein the air cylinder comprises a body part and a vibration reduction part, the vibration reduction part is connected to the peripheral wall of the body part, the vibration reduction part is provided with a cantilever section, the cantilever section extends along the direction far away from the body part, when the air cylinder vibrates, the vibration of the body part can be transmitted to the vibration reduction part, so that the vibration energy of the air cylinder is consumed when the cantilever section of the vibration reduction part vibrates, the vibration response of the air cylinder is inhibited, the noise generated by the vibration of the air cylinder is reduced, and the purposes of vibration reduction and noise reduction are achieved.

Description

Cylinder, compressor and refrigeration plant
Technical Field
The invention relates to the field of compressors, in particular to an air cylinder, 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 cylinder is an important component of the pump body, so how to reduce the vibration of the cylinder 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 cylinder which can inhibit the response of vibration and reduce noise caused by vibration.
The invention also provides a compressor with the cylinder.
The invention also provides refrigeration equipment with the compressor.
According to a first aspect embodiment of the present invention, a cylinder includes:
a body portion;
a vibration damping portion connected to an outer peripheral wall of the body portion;
the vibration reduction part is provided with a cantilever section, and the cantilever section extends along the direction far away from the body part.
The cylinder according to the embodiment of the first aspect of the invention has at least the following beneficial effects:
this cylinder is through being provided with damping portion, and damping portion is provided with the cantilever section, and when the cylinder took place the vibration, the vibration of this somatic part can transmit to damping portion for the cantilever section of damping portion takes place the vibration and consumes the vibration energy of cylinder, thereby suppresses the vibration response of cylinder, reduces the noise that produces because of the cylinder vibration, reaches the purpose of damping and falling the noise.
According to some embodiments of the invention, the thickness 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.
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 a distance between a point along an extending direction of the cantilever segment and the free end, h is a thickness of the cantilever segment at the point, A is a constant and A > 0, and m is a powerThe index m 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 thickness of the free end is h1, satisfying h1 ≧ 0.05 mm.
According to some embodiments of the invention, the cantilever section is arranged to extend circumferentially or radially of the body portion.
According to some embodiments of the invention, the outer peripheral wall of the body portion is provided with a protrusion portion, and the vibration attenuating portion is connected to the protrusion portion.
According to some embodiments of the present invention, the vibration attenuating portion is provided in plurality, and the plurality of vibration attenuating portions are provided at intervals on an outer periphery of the body portion.
A compressor according to an embodiment of the second aspect of the present invention comprises a cylinder according to an embodiment of the first aspect of the present invention.
The compressor according to the embodiment of the second aspect of the invention has at least the following advantages:
the cylinder of the compressor is provided with the vibration damping part, so that when the vibration of the body part is transmitted to the vibration damping part, the cantilever section of the vibration damping part vibrates to consume the vibration energy of the bearing, the vibration response of the cylinder is inhibited, the noise generated by the vibration of the cylinder is reduced, and the working noise of the compressor can be reduced.
The refrigeration equipment according to the embodiment of the third aspect of the invention comprises the compressor of the embodiment of the second aspect of the invention.
According to the refrigeration equipment of the third aspect of the invention, at least the following advantages are achieved:
according to the refrigeration equipment, as the compressor provided by the embodiment of the second aspect of the invention is adopted, the cylinder of the compressor is provided with the vibration damping part, and when the vibration of the body part is transmitted to the vibration damping part, the cantilever section of the vibration damping part vibrates to consume the vibration energy of the bearing, so that the vibration response of the cylinder is inhibited, the noise generated by the vibration of the cylinder is reduced, the working noise of the compressor can be reduced, and the use comfort of the refrigeration equipment is improved.
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 cylinder according to some embodiments of the present invention;
FIG. 2 is a top view structural view of the cylinder of FIG. 1;
FIG. 3 is an enlarged view taken at A in FIG. 2;
FIG. 4 is a schematic perspective view of a cylinder according to further embodiments of the present invention;
FIG. 5 is a top view structural view of the cylinder of FIG. 4;
FIG. 6 is a schematic perspective view of a cylinder according to further embodiments of the present invention;
fig. 7 is a top view structural view of the cylinder of fig. 6.
Reference numerals:
a body portion 100; a slide groove 110; a phase position 120;
a vibration damping portion 200; a cantilever section 210; a free end 211; a fixed end 212.
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 can vibrate, through sound source positioning discovery, the vibration of the pump body assembly is an important reason for causing the compressor to generate noise, and the cylinder is a main component part of the pump body assembly, so that the technical problem of how to reduce the vibration of the cylinder is needed to be solved at present.
In order to solve at least one of the above technical problems, the present invention provides a cylinder, which is applied to a pump body assembly of a compressor and is capable of suppressing noise generated by vibration to achieve the purpose of vibration and noise reduction.
Referring to fig. 1 to 7, the cylinder according to the embodiment of the first aspect of the present invention includes a body portion 100 and a vibration damping portion 200, the vibration damping portion 200 is connected to an outer peripheral wall of the body portion 100, and the vibration damping portion 200 and the body portion 100 constitute a main body portion of the cylinder. When the cylinder is manufactured, the damping portion 200 may be integrally formed with the body portion 100, or the damping portion 200 and the body portion 100 may be separately manufactured and then welded or otherwise connected to each other to constitute a main body portion of the cylinder. The damping portion 200 is further provided with a cantilever section 210, the cantilever section 210 extends outward relative to the main body portion 100 to form a cantilever structure, a thickness of the cantilever section 210 is set to be equal in thickness along a direction from the fixed end 212 to the free end 211, or a thickness of the cantilever section 210 gradually decreases along a direction from the fixed end 212 to the free end 211.
Specifically, the outer contour of the main body 100 is substantially circular, the vibration damping portion 200 is protruded from the outer peripheral wall of the main body 100, and the cantilever section 210 is extended outward relative to the main body 100.
When the cylinder vibrates, the vibration of the body part 100 can be transmitted to the vibration damping part 200, and the cantilever section 210 of the vibration damping part 200 can vibrate to consume the energy of the cylinder vibration, so that the vibration response of the cylinder is inhibited, the noise generated by the cylinder due to the vibration is reduced, and the purposes of vibration damping and noise reduction are achieved.
Specifically, when the thickness of the cantilever segment 210 is set to be equal in thickness along the direction from the fixed end 212 to the free end 211, the cantilever segment 210 can achieve a narrow-band vibration damping effect, and has a good vibration damping effect on the vibration with the same vibration frequency as the resonance frequency of the cantilever segment 210 and the vibration with the vibration frequency near the resonance frequency of the cantilever segment 210, so as to reduce the noise generated by the vibration of the cylinder.
When the thickness of the cantilever section 210 gradually decreases along the direction from the fixed end 212 to the free end 211, the cantilever section 210 can achieve a broadband vibration reduction effect, which is beneficial to damping medium-high frequency vibration, thereby reducing medium-high frequency noise generated by the cylinder due to vibration. 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 the 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 cylinder can be effectively inhibited, and the medium-high frequency noise generated by the vibration of the cylinder is reduced.
Referring to fig. 2, 5 and 7, it will be appreciated that in some embodiments of the inventionIn an embodiment, 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 on the cantilever section 210 and the free end 211 along the extending direction of the cantilever section 210, h is the thickness of the cantilever section 210 at the point, a is a constant and a is greater than 0, 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 herein should be understood as the length of the straight line segment or the length of the curved line segment between the origin and any point. 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 cylinder, and obtaining a good noise reduction effect.
Referring to fig. 3, 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 order to further suppress the low frequency noise of the cylinder, 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 end of the cantilever section 210 far away from the main body portion 100, that is, the weight block is connected to the free end 211 of the cantilever section 210. Through being provided with the balancing weight, can increase the consumption to the vibration energy to improve cantilever section 210 and to the effect of shaking, be favorable to restraining the low frequency vibration of cylinder, thereby reduce the low frequency noise's of cylinder production.
It can be understood that, the damping portion 200 adopts the cantilever section 210 that the thickness reduces gradually and combines the structure of balancing weight, can realize the damping of the full frequency channel vibration of cylinder to effectively restrain the full frequency channel noise's of cylinder production, consequently can obtain better damping noise reduction effect.
It is understood that in some embodiments of the present invention, the weight may be a viscoelastic mass, which may be made of rubber or other viscoelastic material, and may be connected and fixed to the free end 211 of the cantilever segment 210 by vulcanization or bonding.
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 cylinder 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.
Referring to fig. 1 to 5, it can be understood that, in some embodiments of the present invention, the cantilever segment 210 extends along the circumferential direction of the body portion 100, so as to form a cantilever beam structure around the outer circumference of the body portion 100, at this time, the cantilever segment 210 may be set to a longer length, so as to facilitate improving the vibration damping effect, and at the same time, the occupation of the vibration damping portion 200 on the radial space of the cylinder can be reduced. In an actual product, the main body 100 is generally provided with a protrusion at the slide groove 110 and the phase position 120, and the specific phase position 120 may be specifically defined according to the requirement of the actual product, for example, may be a position that forms an angle of 180 ° with the center line of the slide groove 110 along the rotation direction of the motor. The vibration attenuating portions 200 may be coupled to the corresponding protrusions for convenience of processing.
Referring to fig. 1 to 2, in some embodiments of the invention, two damping portions 200 are disposed and connected to two sides of the protrusion portion of the phase position 120 of the main body 100, respectively, and each damping portion 200 has a cantilever section 210, and the cantilever section 210 surrounds the outer circumference of the main body 100. At this time, the two cantilever sections 210 are symmetrical to the two sides of the periphery of the body portion 100, so that on one hand, the processing and manufacturing are more convenient, and on the other hand, the vibration and noise reduction effect of the cylinder can be improved by increasing the number of the cantilever sections 210.
Referring to fig. 4 and 5, of course, the two cantilever segments 210 may also be asymmetric around the outer circumference of the body 100. For example, two vibration damping portions 200 are respectively connected to two sides of the protruding portion where the sliding sheet groove 110 of the main body portion 100 is located, wherein the length of the cantilever section 210 of one vibration damping portion 200 is relatively short, the length of the cantilever section 210 of the other vibration damping portion 200 is relatively long, and the two cantilever sections 210 surround the outer periphery of the main body portion 100, so that a good vibration damping and noise reduction effect can be achieved.
Referring to fig. 6 and 7, it should be noted that in some embodiments of the present invention, the cantilever segments 210 may also be disposed along the radial extension of the body portion 100, so as to form an outwardly diverging cantilever beam structure at the outer periphery of the body portion 100, where the single cantilever segment 210 occupies less circumferential space of the cylinder. Therefore, the plurality of cantilever sections 210 are arranged in the circumferential layout of the cylinder, and the vibration and noise reduction effect of the cylinder is improved.
A compressor according to an embodiment of the second aspect of the present invention includes a cylinder according to an embodiment of the first 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 pump body assembly is located at the lower end in the inner cavity, and the motor assembly is located at the upper end in the inner cavity.
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 can vibrate, and the vibration of the pump body assembly is an important reason for generating noise of the compressor. Therefore, the cylinder of the pump assembly is provided with the body part 100 and the vibration damping part 200, the vibration damping part 200 is provided with the cantilever section 210, when the vibration of the body part 100 is transmitted to the vibration damping part 200, the cantilever section 210 of the vibration damping part 200 can absorb the energy of the vibration and suppress the vibration response of the cylinder, so that the vibration of the pump assembly during operation can be reduced, the operation noise of the compressor can be reduced, and the use comfort can be improved.
The refrigeration equipment of the embodiment of the third aspect of the invention comprises the compressor of the embodiment of the second 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 (11)

1. A cylinder, characterized by comprising:
a body portion;
a vibration damping portion connected to an outer peripheral wall of the body portion;
the vibration reduction part is provided with a cantilever section, and the cantilever section extends along the direction far away from the body part.
2. The cylinder of claim 1, wherein: the thickness 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 cylinder 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.
4. The cylinder of claim 3, wherein: the vibration reduction part is further provided with a balancing weight which is connected with the free end.
5. The cylinder of claim 4, wherein: the balancing weight is a viscoelastic mass block.
6. The cylinder of claim 3, wherein: the thickness of the free end is h1, and the requirement that h1 is more than or equal to 0.05mm is met.
7. The cylinder of claim 1, wherein: the cantilever section extends along the circumferential direction or the radial direction of the body part.
8. The cylinder of claim 1, wherein: the outer peripheral wall of the body part is provided with a protruding part, and the vibration damping part is connected to the protruding part.
9. The cylinder according to any one of claims 1 to 8, wherein: the vibration reduction parts are arranged in plurality and are arranged on the peripheral wall of the body part at intervals.
10. Compressor, characterized in that it comprises a cylinder according to any one of claims 1 to 9.
11. Refrigeration appliance, characterized in that it comprises a compressor as claimed in claim 10.
CN202111470777.0A 2021-12-03 2021-12-03 Cylinder, compressor and refrigeration plant Pending CN114151340A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111470777.0A CN114151340A (en) 2021-12-03 2021-12-03 Cylinder, compressor and refrigeration plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111470777.0A CN114151340A (en) 2021-12-03 2021-12-03 Cylinder, compressor and refrigeration plant

Publications (1)

Publication Number Publication Date
CN114151340A true CN114151340A (en) 2022-03-08

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Application Number Title Priority Date Filing Date
CN202111470777.0A Pending CN114151340A (en) 2021-12-03 2021-12-03 Cylinder, compressor and refrigeration plant

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CN (1) CN114151340A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115199547A (en) * 2022-06-30 2022-10-18 珠海凌达压缩机有限公司 Pump body subassembly, compressor and air conditioner

Citations (2)

* Cited by examiner, † Cited by third party
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CN115199547B (en) * 2022-06-30 2023-09-29 珠海凌达压缩机有限公司 Pump body assembly, compressor and air conditioner

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