Silencing assembly and compressor

Abstract

The invention relates to the field of compressor noise reduction, and provides a noise reduction assembly and a compressor. The noise reduction assembly comprises an upper cylinder cover, the upper cylinder cover comprises a base body and an exhaust hole penetrating through the base body in the axial direction of the base body, an exhaust slope is arranged at the position, surrounding the exhaust hole, of the base body, a cavity and a channel are formed in the exhaust slope, and the cavity is located below the interior of the exhaust slope; the channel penetrates through the exhaust slope surface to the cavity; the silencer comprises a silencer air outlet, the silencer covers the upper cylinder cover, a space defined by the silencer and the upper cylinder cover forms a silencer cavity, and the channel is communicated with the cavity and the silencer cavity; the cavity, the channel and the silencer cavity jointly form a silencing cavity of the silencing assembly, and a refrigerant exhausted from the exhaust hole passes through the silencing cavity and flows out of the silencing assembly from the silencer air outlet. According to the silencing assembly and the compressor, noise in the exhaust stage of the compressor is effectively reduced, meanwhile, the cylinder volume efficiency is prevented from being reduced, and therefore the performance of the compressor is improved.

Description

Technical Field

[0001] The invention relates to the field of compressor silencing, and in particular to a silencing component and a compressor. Background Art

[0002] The working cycle of a rotary compressor can be divided into three processes: suction, compression, and exhaust. Airflow noise is an important noise source for rotary compressors. During the exhaust process, high-temperature and high-pressure refrigerant enters the muffler from the cylinder through the exhaust port. To reduce exhaust noise, mufflers and exhaust silencer holes are usually used. However, the use of exhaust silencer holes will reduce the cylinder volume efficiency and affect performance.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0004] In view of this, the present invention provides a silencer assembly and a compressor.

[0005] One aspect of the present invention provides a muffler assembly for a compressor, comprising:

[0006] An upper cylinder cover, the upper cylinder cover comprises a base body and an exhaust hole penetrating the base body along the axial direction of the base body, the base body has an exhaust slope around the exhaust hole, the exhaust slope has a cavity and a channel, the cavity is located below the inside of the exhaust slope, and the channel penetrates the exhaust slope surface to the cavity;

[0007] a muffler, the muffler comprising a plurality of muffler air outlets, the muffler covering the upper cylinder head, the space enclosed by the muffler and the upper cylinder head constituting a muffler cavity, the passage communicating with the cavity and the muffler cavity;

[0008] The cavity, the passage and the muffler cavity together constitute a muffler cavity of the muffler assembly, and the refrigerant discharged from the exhaust hole passes through the muffler cavity and flows out of the muffler assembly from the muffler outlet.

[0009] In some embodiments, the exhaust slope semi-surrounds the exhaust hole, and the cavity is located inside the substrate and extends along the direction in which the exhaust slope surrounds the exhaust hole.

[0010] In some embodiments, the channel is located at the bottom end of the exhaust slope, and the cavity is connected to the outside only through the channel.

[0011] In some embodiments, the geometric structures of the cavity and the channel satisfy the K value range of (0, 1020):

[0012]

[0013] L ′ =L+βd,

[0014] Wherein, L represents the length of the channel, β represents the length coefficient, d represents the equivalent diameter of the channel, L' represents the equivalent length of the channel, V represents the volume of the cavity, and K represents a dimensionless parameter for measuring the silencing bandwidth of the silencing component.

[0015] In some embodiments, the silencer assembly further includes: at least one flow guide device, which is located in the silencer cavity and arranged between the exhaust slope and the silencer; the flow guide device is a sheet structure; the refrigerant discharged from the exhaust hole passes through the exhaust slope and the flow guide device, and flows out of the silencer from the silencer outlet.

[0016] In some embodiments, the upper cylinder head further includes a valve seat, which is recessed in the base along the axial direction of the base, the exhaust hole is located in the valve seat, and the exhaust hole is inclined toward the outside of the base along the exhaust slope from the bottom to the top.

[0017] In some embodiments, the upper cylinder cover also includes a valve plate, which is located on the valve seat. The valve plate can cover the exhaust hole in an openable and closable manner. When the pressure in the cylinder of the compressor is greater than the pressure provided by the valve plate, the refrigerant is discharged through the exhaust hole.

[0018] In some embodiments, the substrate includes a plurality of waist-shaped holes penetrating the substrate and distributed along the circumference of the substrate.

[0019] In some embodiments, the base includes a plurality of threaded holes penetrating the base and distributed along the circumference of the base, and the upper cylinder cover is detachably connected to the cylinder of the compressor through the plurality of threaded holes.

[0020] Another aspect of the present invention provides a compressor, comprising: a cylinder, a lower cylinder head and any one of the above-mentioned silencer components.

[0021] The beneficial effects of the present invention compared with the prior art include at least:

[0022] The silencer assembly and the compressor of the present invention provide a silencer assembly, and adopt a method of opening a cavity and a channel under the exhaust slope, so that the cavity and the silencer cavity together constitute the silencer cavity of the silencer assembly. When the high-speed refrigerant flows out from the exhaust hole, the acoustic response in the cavity is reduced, thereby effectively reducing the noise in the exhaust stage of the compressor. At the same time, the silencer assembly is located outside the cylinder to avoid occupying the space of the cylinder and causing the cylinder volume efficiency to be reduced, thereby improving the performance of the compressor.

[0023] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present invention, and together with the specification are used to explain the principles of the present invention. Obviously, the accompanying drawings described below are only some embodiments of the present invention, and for those of ordinary skill in the art, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0025] Figure 1 A schematic diagram showing the structure of an upper cylinder cover in one embodiment of the present invention is shown;

[0026] Figure 2 The noise reduction assembly of the present invention is shown in Figure 1 Schematic diagram of the middle BB section;

[0027] Figure 3 Show Figure 2 Enlarged view of the middle circled part;

[0028] Figure 4 Another schematic structural diagram of an upper cylinder cover in one embodiment of the present invention is shown;

[0029] Figure 5 The noise reduction assembly of the present invention is shown in Figure 4 Partial schematic diagram of the AA section;

[0030] Figure 6 Show Figure 5 Enlarged view of the middle circled part;

[0031] Figure 7 A schematic diagram showing the structure of the exhaust ramp of the present invention;

[0032] Figure 8 The acoustic response test diagram in the exhaust chamber of the compressor of the present invention and the prior art is shown.

[0033] Reference numerals:

[0034] 10 Upper cylinder head

[0035] 11. Matrix

[0036] 111 Exhaust ramp

[0037] 112 Cavity

[0038] 113 channels

[0039] 114 waist hole

[0040] 115 threaded hole

[0041] 12 Exhaust holes

[0042] 13 Valve seat

[0043] 20 Silencer DETAILED DESCRIPTION

[0044] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0045] The words "first", "second" and the like used in the specific description do not indicate any order, quantity or importance, but are only used to distinguish different components. In addition, in the description of the present invention, the orientation or position relationship indicated by the terms "upper" and "lower" are based on the orientation or position relationship shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0046] It should be noted that, in the absence of conflict, the embodiments of the present invention and features in different embodiments may be combined with each other.

[0047] The inventor of this case has provided a solution to the problems existing in the prior art through careful and in-depth research. Figure 1 and 7 As shown, Figure 1 A schematic diagram showing the structure of an upper cylinder cover in one embodiment of the present invention is shown; Figure 2 The noise reduction assembly of the present invention is shown in Figure 1 Schematic diagram of the middle BB section;

[0048] Figure 3 Show Figure 2 Enlarged view of the middle circled part; Figure 4 Another schematic structural diagram of an upper cylinder cover in one embodiment of the present invention is shown; Figure 5The noise reduction assembly of the present invention is shown in Figure 4 Partial schematic diagram of the AA section; Figure 6 Show Figure 5 Enlarged view of the middle circled part; Figure 7 The schematic diagram of the structure of the exhaust slope of the present invention is shown. The present invention discloses a muffler assembly and a compressor. The muffler assembly is used for a compressor, and specifically comprises: an upper cylinder head 10, the upper cylinder head 10 comprises a base 11 and an exhaust hole 12 penetrating the base 11 along the axial direction of the base 11, the base 11 has an exhaust slope 111 around the exhaust hole 12, the exhaust slope 111 has a cavity 112 and a channel 113, the cavity 112 is located below the exhaust slope 111, and the channel 113 penetrates the surface of the exhaust slope 111 to the cavity 112; a muffler The muffler 20 includes a muffler 20 outlet, the muffler 20 is covered on the upper cylinder head 10, the space enclosed by the muffler 20 and the upper cylinder head 10 constitutes a muffler 20 cavity, and the channel 113 connects the cavity 112 and the muffler 20 cavity; wherein, the cavity 112, the channel 113 and the muffler 20 cavity together constitute a muffler cavity of the muffler assembly, and the refrigerant discharged from the exhaust hole 12 passes through the muffler cavity and flows out of the muffler assembly from the muffler 20 outlet. The silencer assembly and the compressor of the present invention provide a silencer assembly, and adopt a method of opening a cavity 112 and a channel 113 under the exhaust slope 111, so that they and the silencer cavity together constitute the silencer cavity of the silencer assembly. When the high-speed refrigerant flows out from the exhaust hole, the acoustic response in the cavity is reduced, thereby effectively reducing the noise in the exhaust stage of the compressor; at the same time, the silencer assembly is located outside the cylinder, avoiding the reduction of the cylinder volume efficiency caused by occupying the space of the cylinder, thereby improving the performance of the compressor.

[0049] The present invention is further described below in conjunction with the accompanying drawings.

[0050] refer to Figure 1 , 5 According to one aspect of the present invention, a muffler assembly is disclosed, which is used for a compressor and specifically comprises at least: an upper cylinder head 10 and a muffler 20.

[0051] In some embodiments, the upper cylinder head 10 includes a base 11 and an exhaust hole 12 that penetrates the base 11 along the axial direction of the base 11, and the base 11 has an exhaust slope 111 around the exhaust hole 12. Generally, the base of the upper cylinder head used for the compressor is annular to match the overall shape of the compressor. The exhaust hole 12 is located at a point off-center of the base 11, and the axial direction of the base 11 is also the axial direction of the compressor. The exhaust slope 111 semi-surrounds the exhaust hole 12, and the semi-surrounded position of the exhaust slope 111 completely covers the direction of the refrigerant outflow, so that after the refrigerant flows out of the exhaust hole 12, it is discharged upward through the exhaust slope 111. In addition, the exhaust slope 111 can be a smooth curved surface, or it can be a combination of multiple planes, or other forms.

[0052] In some embodiments, the upper cylinder head 10 further includes a valve seat 13, which is recessed in the axial direction of the base 11. That is, the valve seat 13 is formed by opening a groove on the upper surface of the base 12, and a part of the bottom of the groove is the valve seat 13. The exhaust slope 111 is the inclined inner wall of the groove of the valve seat 13, and the other inner walls of the groove can be parallel to the axial direction of the base 11, or there can be a certain angle, without limitation. The exhaust hole 12 is located in the valve seat 13. In a preferred embodiment, the exhaust hole 12 is inclined toward the outside of the base 11 along the direction from the bottom to the top of the exhaust slope 111, that is, there is a certain angle between the axial direction of the exhaust hole 12 from bottom to top and the axial direction of the base 11. In a more preferred embodiment, the inclination direction of the exhaust hole 12 matches the inclination direction of the exhaust slope 111 to reduce the collision between the refrigerant flow and the base 11 and components such as the muffler 20, so as to reduce power consumption and reduce noise.

[0053] In some embodiments, the upper cylinder head 10 further includes a valve plate (not shown in the figure), which is located on the valve seat 13 and can cover the exhaust hole 12 in an openable and closable manner. Generally, the valve plate is elastic, and one end of the valve plate is detachably arranged on the end of the valve seat 13 away from the exhaust hole, and the other end of the valve plate closes the exhaust hole 12. The valve seat is subjected to the air pressure in the working chamber and the air pressure of the external environment. When the pressure difference is greater than a certain critical value, the end of the valve plate located on the exhaust hole 12 is lifted and opens the exhaust hole 12 to discharge the gas.

[0054] In some embodiments, the base 11 includes a plurality of waist-shaped holes 114 that penetrate the base 11 and are distributed along the circumference of the base 11. The plurality of waist-shaped holes 114 may be of the same shape and size or may be different. The working chamber of the compressor includes an air intake chamber and a compression chamber. During the operation of the compressor, most of the cylinder is immersed in the oil pool. The area of ​​the waist-shaped holes 114 can be filled with the oil pool, which is conducive to the heat dissipation of the high temperature in the compression chamber to the oil pool.

[0055] In some embodiments, the base 11 includes a plurality of threaded holes 115 that penetrate the base 11 and are distributed along the circumference of the base 11, and the upper cylinder head 10 is detachably connected to the cylinder of the compressor through the plurality of threaded holes 115. The threaded holes 115 are closer to the axis of the base 11 than the waist-shaped holes 114. Specifically, the cylinder is also provided with a plurality of threaded holes, and the threaded holes on the cylinder correspond one-to-one to the threaded holes 115 on the base 11, and then the two are detachably connected by bolts.

[0056] In some embodiments, reference Figure 2The muffler 20 includes a plurality of muffler outlets (not shown in the figure), which can be opened on the side of the muffler 20 or on the top surface of the muffler 20. The muffler 20 covers the upper cylinder head 10, and the space enclosed by the muffler 20 and the upper cylinder head 10 constitutes a muffler cavity. After the gas is discharged from the exhaust hole 12, it passes through the muffler cavity and is discharged from the muffler outlet. The muffler 20 is used to eliminate the noise generated by the compressor during operation, especially the noise generated when the gas is discharged from the exhaust hole 12.

[0057] refer to Figure 7 In some embodiments, the exhaust slope 111 has a cavity 112 ( Figure 7 The cavity formed by the long dashed line) and a channel 113 ( Figure 7 The cavity 112 is located below the exhaust slope 111 , and the channel 113 passes through the surface of the exhaust slope 111 to the cavity 112 .

[0058] Specifically, refer to Figure 1 , 4 7, the exhaust slope 111 semi-surrounds the exhaust hole 12, and the cavity 112 is located inside the substrate 11 and extends in the direction in which the exhaust slope 111 surrounds the exhaust hole 12. The shape of the cross section of the cavity 112 perpendicular to its own extension direction can be polygonal, circular, etc., and the cross section is preferably rectangular. The shape of the cavity 112 can be changed according to the shape of the exhaust slope 111 to adapt to the exhaust slope 111. For example, when the exhaust slope 111 is a smooth curved surface, the turning point of the cavity 112 is a smooth transition. When the exhaust slope 111 is composed of multiple planes, the turning point of the cavity 112 is an uneven transition.

[0059] Specifically, the channel 113 is located at the bottom end of the exhaust slope 111, and the cavity 112 is connected to the outside only through the channel 113. In other embodiments, the channel 113 may also be located at other positions of the exhaust slope 111, as long as the channel 113 passes through the surface of the exhaust slope 111 to the cavity 112. The shape of the cross section of the channel 113 perpendicular to its own length direction can be polygonal, circular, etc., and the cross section is preferably rectangular.

[0060] The cavity 112, the channel 113 and the cavity of the muffler 20 together constitute the muffler cavity of the muffler assembly. The refrigerant discharged from the exhaust hole 12 passes through the muffler cavity and flows out of the muffler assembly from the outlet of the muffler 20. The cavity 112 and the channel 113 are opened under the exhaust slope 111, so that the cavity 112 and the channel 113 together with the muffler cavity constitute the muffler cavity of the muffler assembly. When the high-speed refrigerant flows out from the exhaust hole 12, the acoustic response in the cavity is reduced, which effectively reduces the noise of the compressor exhaust stage.

[0061] When the muffler cavity is working, it can cancel the noise of a specific frequency, which is the muffler frequency of the muffler component. In some preferred embodiments, the geometric structure of the cavity 112 and the channel 113 satisfies the following formula:

[0062]

[0063] L ′ =L+βd,

[0064] Wherein, L represents the length of the channel 113, β represents the length coefficient, which can be between (0.3, 1.0), d represents the equivalent diameter of the channel 113, L' represents the equivalent length of the channel 113, V represents the volume of the cavity 112, and K represents a dimensionless parameter used to measure the silencing bandwidth of the silencing component. Preferably, the K value range should be (0, 1020). In order to make the silencing cavity have a better silencing effect, the silencing bandwidth of the silencing cavity should be increased as much as possible. The larger the K is, the larger the silencing bandwidth of the silencing cavity is, and the better the noise reduction effect of the silencing cavity is. Therefore, the geometric design of the cavity 112 and the channel 113 should make the K value as large as possible.

[0065] In some embodiments, the muffler assembly further includes at least one flow guide device, which is located in the muffler cavity and arranged between the exhaust slope and the muffler; the flow guide device is a protruding structure; the refrigerant discharged from the exhaust hole passes through the exhaust slope, changes its flow direction under the action of the flow guide device, and flows out of the muffler from the muffler outlet. Specifically, the flow guide device is fixedly connected to the exhaust slope; or is fixedly connected to the muffler, and its width gradually increases in the vertical upward direction of the exhaust slope.

[0066] In some embodiments, the flow guide device is a sheet-like protruding structure. In the sheet-like cross-section of the flow guide device, the height of the flow guide device is h and the bottom width is b, and the two satisfy h / b≧0.15. The sheet-like cross-section of the flow guide device and the direction parallel to the upward direction of the exhaust slope form a first angle with the direction of the refrigerant flow, and the absolute value range of the first angle is 0 to 60°. Preferably, the absolute value range of the first angle is 20° to 40°. A second angle is formed between the sheet-like cross-section of the flow guide device and the slope surface of the exhaust slope where the flow guide device is located, and the numerical range of the second angle is 45° to 135°. Preferably, the numerical range of the second angle is 60° to 120°. The tail of the flow guide device has a third angle, and the numerical range of the third angle is 30° to 150°. The number of flow guide devices provided by the silencer assembly is 1 to 10. When the number of flow guide devices is greater than 1, the flow guide devices are symmetrically distributed in a fan shape. Preferably, the number of the guide devices of the silencer assembly is 2 to 4; when the number of the guide devices is 2 to 3, the guide devices are arranged in one row; when the number of the guide devices is 4, the guide devices are arranged in two rows.

[0067] In some embodiments, the flow guide device is a V-shaped protruding structure, and the refrigerant flows through the flow guide device from the bottom end of the V to the top end. Optionally, the flow guide device of the V-shaped protruding structure can be regarded as being composed of two flow guide devices of sheet-like structures spliced ​​together. At this time, the parameters of the flow guide device of the V-shaped protruding structure can refer to the flow guide device of the sheet-like structure, which will not be repeated here. Preferably, when the flow guide device of the V-shaped protruding structure is fixedly connected to the exhaust slope 111, its cross-sectional area gradually decreases in the vertical upward direction of the exhaust slope 111. When the flow guide device of the V-shaped protruding structure is fixedly connected to the muffler 20, its cross-sectional area gradually decreases in the vertical downward direction of the muffler 20.

[0068] Another aspect of the present invention provides a compressor, comprising: a cylinder, a lower cylinder head and the above-mentioned muffler assembly. The upper cylinder head and the lower cylinder head of the muffler assembly are respectively arranged at the two ends of the cylinder along the axial direction of the cylinder to form a compression chamber for compressing refrigerant. The axial direction of the base 11 of the muffler assembly is parallel to the axial direction of the cylinder. The exhaust hole 12 is connected to the compression chamber. Since the compressor includes the muffler assembly as described above. Therefore, the compressor also has the beneficial effects brought by the muffler assembly. Specifically, please refer to Figure 8 , Figure 8 The acoustic response test graphs of the exhaust chamber of the compressors of the present invention and the prior art are shown. Among them, the M curve represents the acoustic response test curve of the exhaust chamber of the compressor of the prior art, and the N curve represents the acoustic response test curve of the exhaust chamber of the compressor of the present invention. The test is obtained by introducing airflow into the compressor, testing the acoustic response of multiple points inside, and summing the results. Compared with the prior art, the compressor of the present invention effectively reduces the noise of the compressor exhaust stage by opening cavities and channels under the exhaust slope, thereby improving the performance of the compressor.

[0069] In summary, the silencer assembly and the compressor of the present invention provide a silencer assembly, and adopt a method of opening a cavity and a channel under the exhaust slope, so that the cavity and the silencer cavity together constitute the silencer cavity of the silencer assembly. When the high-speed refrigerant flows out from the exhaust hole, the acoustic response in the cavity is reduced, thereby effectively reducing the noise in the exhaust stage of the compressor; at the same time, the silencer assembly is located outside the cylinder to avoid occupying the space of the cylinder and causing the cylinder volume efficiency to be reduced, thereby improving the performance of the compressor.

[0070] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A silencer assembly for a compressor, characterized in that: include: An upper cylinder cover, the upper cylinder cover comprises a base body and an exhaust hole penetrating the base body along the axial direction of the base body, the base body has an exhaust slope around the exhaust hole, the exhaust slope has a cavity and a channel, the cavity is located below the inside of the exhaust slope, and the channel penetrates the exhaust slope surface to the cavity; a muffler, the muffler comprising a plurality of muffler air outlets, the muffler covering the upper cylinder head, the space enclosed by the muffler and the upper cylinder head constituting a muffler cavity, the passage communicating with the cavity and the muffler cavity; The cavity, the passage and the muffler cavity together constitute a muffler cavity of the muffler assembly, and the refrigerant discharged from the exhaust hole passes through the muffler cavity and flows out of the muffler assembly from the muffler outlet.

2. The sound-absorbing assembly according to claim 1, characterized in that: The exhaust slope semi-surrounds the exhaust hole, and the cavity is located inside the base body and extends along the direction in which the exhaust slope surrounds the exhaust hole.

3. The sound-absorbing assembly according to claim 1, characterized in that: The channel is located at the bottom end of the exhaust slope, and the cavity is connected with the outside only through the channel.

4. The sound-absorbing assembly according to claim 1, characterized in that: The geometric structure of the cavity and the channel should satisfy K value (0, 1020): L ′ =L+βd, Wherein, L represents the length of the channel, β represents the length coefficient, d represents the equivalent diameter of the channel, L' represents the equivalent length of the channel, V represents the volume of the cavity, and K represents a dimensionless parameter for measuring the silencing bandwidth of the silencing component.

5. The sound-absorbing assembly according to claim 1, characterized in that: Also includes: At least one flow guide device, the flow guide device is located in the muffler cavity and arranged between the exhaust slope and the muffler; the flow guide device is a sheet structure; The refrigerant discharged from the exhaust hole passes through the exhaust slope and the guide device, and flows out of the muffler from the muffler outlet.

6. The sound-absorbing assembly according to claim 1, characterized in that: The upper cylinder cover also includes a valve seat, which is recessed in the base along the axial direction of the base, and the exhaust hole is located in the valve seat. The exhaust hole is inclined toward the outside of the base along the exhaust slope from the bottom end to the top end.

7. The sound-absorbing assembly according to claim 6, characterized in that: The upper cylinder cover also includes a valve plate, which is located on the valve seat. The valve plate can cover the exhaust hole in an openable and closable manner. When the pressure in the cylinder of the compressor is greater than the pressure provided by the valve plate, the refrigerant is discharged through the exhaust hole.

8. The sound-absorbing assembly according to claim 1, characterized in that: The base body includes a plurality of waist-shaped holes penetrating the base body and distributed along the circumference of the base body.

9. The sound-absorbing assembly according to claim 1, characterized in that: The base body comprises a plurality of threaded holes penetrating the base body and distributed along the circumference of the base body, and the upper cylinder cover is detachably connected to the cylinder of the compressor through the plurality of threaded holes.

10. A compressor, characterized in that: include: A cylinder, a lower cylinder head and a silencer assembly according to any one of claims 1 to 9.

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