A sound attenuation device, pump body structure and compressor
By designing an outer and inner silencer cover in the silencer device, increasing the volume of the silencer cavity and optimizing the gas flow path, the problem of poor silencer performance in existing silencers is solved, and a better silencer effect is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PANASONIC WANBAO GUANGZHOU COMPRESSOR
- Filing Date
- 2025-07-01
- Publication Date
- 2026-06-19
AI Technical Summary
Existing silencers have a small silencing cavity and a small refrigerant gas flow path, resulting in limited silencing effect.
Design a silencing device including an outer silencing cover and an inner silencing cover. The outer periphery of the outer silencing cover forms an exhaust channel, and the axial end face of the inner silencing cover penetrates a flow hole. Refrigerant gas impacts in the inner silencing cavity and is discharged radially. The axial end face of the outer silencing cover forms a petal-shaped protrusion to increase the volume of the silencing cavity.
The volume of the silencing cavity and the refrigerant gas flow path of the silencing device have been increased, thus enhancing the silencing effect.
Smart Images
Figure CN224380113U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of compressor technology, and in particular to a silencer, pump body structure and compressor. Background Technology
[0002] A rotary compressor uses a motor to directly drive a rotary piston to compress refrigerant gas. The compressor motor stator is fixed inside the compressor housing, and the motor rotor is fixed on the crankshaft. When the compressor motor is powered on, the rotor rotates, which in turn drives the crankshaft to rotate. The crankshaft drives the piston inside the cylinder to rotate, compressing the refrigerant gas inside the cylinder. The compressed refrigerant gas enters the muffler through the exhaust valve seat on the bearing, and after being silenced by the muffler, it is discharged from the exhaust port of the muffler.
[0003] However, the existing mufflers have relatively small silencing chambers, and because they have axial exhaust holes, the refrigerant gas flow path is narrow, resulting in limited silencing capacity and an inability to achieve optimal silencing effect. Utility Model Content
[0004] Therefore, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a silencing device, a pump body structure, and a compressor. The silencing device provided by this utility model can effectively increase the volume of the silencing cavity and the flow path of the refrigerant gas, thereby effectively improving the silencing effect of the silencing device.
[0005] To achieve the above objectives, a first aspect of this utility model provides a silencing device, including an outer silencing cover and an inner silencing cover. The outer silencing cover covers the inner silencing cover, and the outer periphery of the outer silencing cover and the outer periphery of the inner silencing cover are sealed together. The inner wall of the outer silencing cover and the outer wall of the inner silencing cover enclose and form a sealed outer silencing cavity. The outer periphery of the outer silencing cover arches away from the outer periphery of the inner silencing cover to form an exhaust channel, which is connected to the outer silencing cavity. The interior of the inner silencing cover is the inner silencing cavity, and a flow hole is provided through the inner silencing cover to connect the inner silencing cavity and the outer silencing cavity. The axial end face of the outer silencing cover away from the inner silencing cover protrudes away from the inner silencing cover to form a petal-shaped protrusion. An external mounting hole is provided in the center of the protrusion, and an internal mounting hole is provided in the center of the inner silencing cover.
[0006] In one embodiment, the inner silencer cover has a through-hole at its axial end face.
[0007] Therefore, the silencing device according to this utility model embodiment has an exhaust channel connecting the outer silencing cavity opened on the outer periphery of the outer silencing cover, which cooperates with the flow hole opened through the axial end face of the inner silencing cover. When the refrigerant gas enters the outer silencing cavity from the inner silencing cavity through the flow hole in the axial direction, the refrigerant gas first impacts the inner wall of the end face of the outer silencing cover, then disperses in other directions, and finally exits the outer silencing cavity in the radial direction through the exhaust channel. This effectively improves the flow path of the refrigerant gas, thereby improving the silencing capability of the silencing device. In addition, this utility model forms a petal-shaped protrusion on the axial end face of the outer silencing cover, which effectively increases the volume of the outer silencing cavity, thereby effectively improving the overall silencing capacity of the silencing device and thus improving the silencing effect of the silencing device.
[0008] In one embodiment, the exhaust channel has an arc-shaped arched structure, and the exhaust direction of the exhaust channel is arranged radially.
[0009] In one embodiment, the edge of the inner mounting hole protrudes in a direction away from the inner silencing cavity to form a first flange, and the first flange is spaced apart from the outer mounting hole.
[0010] In one embodiment, the edge of the outer mounting hole protrudes in a direction away from the inner mounting hole to form a second flange.
[0011] In one embodiment, the axial end face of the inner silencing cover opposite to the inner silencing cavity is recessed to form a groove.
[0012] In one embodiment, the outer mounting hole is adapted to be fitted onto the object to be installed, the inner mounting hole is coaxially arranged with the outer mounting hole, and the radius of the inner mounting hole is greater than or equal to the radius of the outer mounting hole.
[0013] In one embodiment, the outer periphery of the outer silencing cover and the outer periphery of the inner silencing cover are coaxially provided with fixing holes of equal size.
[0014] A second aspect of this utility model provides a pump body structure, which includes the silencing device described in any of the above embodiments, and further includes an upper bearing, a cylinder assembly, and a lower bearing connected sequentially along the axial direction. The silencing device is disposed on the upper bearing, and the outer periphery of the inner silencing cover is sealed to the end face of the upper bearing away from the cylinder assembly. According to the pump body structure of this utility model embodiment, the volume of the silencing cavity of the silencing device and the flow path of the refrigerant gas can be effectively increased, thereby effectively improving the silencing effect of the silencing device.
[0015] A third aspect of this utility model provides a compressor comprising the pump body structure described in any of the preceding embodiments. The compressor according to this utility model embodiment can effectively increase the volume of the silencing cavity and the flow path of the refrigerant gas in the silencing device, thereby effectively improving the silencing effect of the silencing device.
[0016] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description
[0017] Figure 1 This is one of the structural schematic diagrams of the silencing device according to an embodiment of the present utility model;
[0018] Figure 2 This is a second schematic diagram of the structure of the silencing device according to an embodiment of the present utility model;
[0019] Figure 3 This is the third schematic diagram of the structure of the silencing device according to an embodiment of the present utility model;
[0020] Figure 4 for Figure 3 A schematic cross-sectional view along direction AA is shown.
[0021] Figure 5 This is a schematic diagram of the structure of the outer silencer cover of the silencer device according to an embodiment of the present utility model;
[0022] Figure 6 This is one of the structural schematic diagrams of the inner silencer cover of the silencer device according to an embodiment of the present utility model;
[0023] Figure 7 This is a second schematic diagram of the structure of the inner silencing cover of the silencing device according to an embodiment of the present utility model;
[0024] Figure 8 This is a schematic diagram showing the connection between the noise reduction device and the upper bearing in an embodiment of the present invention;
[0025] Figure 9 This is a schematic diagram of the pump body structure according to an embodiment of the present utility model.
[0026] Explanation of reference numerals in the attached figures:
[0027] 10. Outer muffler cover; 11. Outer muffler cavity; 12. Exhaust passage; 13. Protrusion; 14. Outer mounting hole; 15. Second flange; 20. Inner muffler cover; 21. Inner muffler cavity; 22. Flow hole; 23. Inner mounting hole; 24. First flange; 25. Groove; 30. Fixing hole; 100. Muffler device; 200. Upper bearing; 300. Cylinder assembly; 400. Lower bearing; 500. Crankshaft. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this application clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0029] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.
[0030] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0031] In related technologies, rotary compressors use a motor to directly drive a rotary piston to compress refrigerant gas. The compressor motor stator is fixed inside the compressor housing, and the motor rotor is fixed on the crankshaft. When the compressor motor is energized, the rotor rotates, which in turn drives the crankshaft to rotate. The crankshaft then drives the piston inside the cylinder to rotate, compressing the refrigerant gas within the cylinder. The compressed refrigerant gas enters the muffler through the exhaust valve seat on the bearing, and after being silenced by the muffler, it is discharged from the muffler's exhaust port. However, existing mufflers have relatively small silencing chambers, and because they have axially spaced exhaust ports, the flow path for the refrigerant gas is narrow, resulting in limited silencing capacity and an inability to achieve optimal noise reduction.
[0032] Therefore, this utility model provides a silencing device, a pump body structure, and a compressor. According to the silencing device, pump body structure, and compressor of this utility model, the volume of the silencing cavity and the flow path of the refrigerant gas in the silencing device can be effectively increased, thereby effectively improving the silencing effect of the silencing device.
[0033] Please see Figures 1 to 9 The first aspect of this utility model provides a silencing device 100, including an outer silencing cover 10 and an inner silencing cover 20. The outer silencing cover 10 covers the inner silencing cover 20. The outer periphery of the outer silencing cover 10 and the outer periphery of the inner silencing cover 20 are sealed together. The inner wall of the outer silencing cover 10 and the outer wall of the inner silencing cover 20 enclose and form a sealed outer silencing cavity 11. The outer periphery of the outer silencing cover 10 arches away from the outer periphery of the inner silencing cover 20 to form an exhaust channel 1. 2. The exhaust passage 12 is connected to the outer muffler cavity 11; the interior of the inner muffler cover 20 is the inner muffler cavity 21, and the inner muffler cover 20 has a through hole 22 that connects the inner muffler cavity 21 and the outer muffler cavity 11; the axial end face of the outer muffler cover 10 away from the inner muffler cover 20 protrudes in a direction away from the inner muffler cover 20 to form a petal-shaped protrusion 13, and the center of the protrusion 13 is provided with an outer mounting hole 14, and the center of the inner muffler cover 20 is provided with an inner mounting hole 23.
[0034] In this embodiment of the invention, the inner silencing cover 20 has a through-hole 22 at its axial end face.
[0035] Therefore, according to the embodiment of the present invention, the silencing device 100 has an exhaust channel 12 connected to the outer silencing cavity 11 by opening an exhaust channel 12 on the outer periphery of the outer silencing cover 10, which cooperates with the flow hole 22 through which the inner silencing cover 20 is opened at its axial end face. When the refrigerant gas enters the outer silencing cavity 11 from the inner silencing cavity 21 through the flow hole 22 in the axial direction, the refrigerant gas first hits the inner wall of the end face of the outer silencing cover 10, then disperses in other directions, and finally exits the outer silencing cavity 11 in the radial direction through the exhaust channel 12. This effectively improves the flow path of the refrigerant gas, thereby improving the silencing capability of the silencing device 100. In addition, the present invention forms a petal-shaped protrusion 13 on the axial end face of the outer silencing cover 10, which effectively increases the volume of the outer silencing cavity 11, thereby effectively increasing the overall silencing capacity of the silencing device 100, and thus improving the silencing effect of the silencing device 100.
[0036] Optionally, in some embodiments of this utility model, the exhaust channel 12 is an arc-shaped arched structure, and the exhaust direction of the exhaust channel 12 is arranged radially. It can be understood that in these embodiments, the exhaust channel 12 arches from the outer periphery of the outer muffler cover 10 in a direction away from the inner muffler cover 20 and forms an arc-shaped channel connecting the outer muffler cavity 11, so that the refrigerant gas in the outer muffler cavity 11 is finally discharged radially along the exhaust channel 12 from the outer muffler cavity 11.
[0037] Optionally, in some embodiments of this utility model, the edge of the inner mounting hole 23 protrudes in a direction away from the inner silencing cavity 21 to form a first flange 24, and the first flange 24 is spaced apart from the outer mounting hole 14. It can be understood that, in these embodiments, by forming the first flange 24 by protruding the edge of the inner mounting hole 23, the rigidity of the inner mounting hole 23 can be strengthened by the first flange 24, so that when the inner mounting hole 23 is assembled with the bushing of the crankshaft 500 or the upper bearing 200 to be installed, the rigidity of the inner mounting hole 23 can be strengthened.
[0038] Optionally, in some embodiments of this utility model, the edge of the outer mounting hole 14 protrudes in a direction away from the inner mounting hole 23 to form a second flange 15. It can be understood that, in these embodiments, by forming a second flange 15 by protruding the edge of the outer mounting hole 14, the rigidity of the outer mounting hole 14 can be strengthened by the second flange 15, so that when the outer mounting hole 14 is assembled with the bushing of the crankshaft 500 or the upper bearing 200 to be installed, the rigidity of the outer mounting hole 14 can be strengthened.
[0039] Optionally, in some embodiments of the present invention, the outer mounting hole 14 is adapted to be fitted onto the object to be installed, the inner mounting hole 23 is coaxially arranged with the outer mounting hole 14, and the radius of the inner mounting hole 23 is greater than or equal to the radius of the outer mounting hole 14.
[0040] Optionally, in some embodiments of this utility model, the outer periphery of the outer silencing cover 10 and the outer periphery of the inner silencing cover 20 are coaxially provided with fixing holes 30 of equal size.
[0041] Optionally, in some embodiments of the present invention, the inner silencing cover 20 has a groove 25 recessed on the axial end face opposite to the inner silencing cavity 21, and the groove 25 is elongated.
[0042] The following is combined Figures 1 to 9 The following is a detailed description of a specific embodiment of the silencing device 100 according to the present invention. It is worth understanding that the following is merely an illustrative description and should not be construed as limiting the present invention.
[0043] This embodiment provides a muffler device 100, including an outer muffler cover 10 and an inner muffler cover 20. The outer muffler cover 10 covers the inner muffler cover 20, and the outer periphery of the outer muffler cover 10 and the outer periphery of the inner muffler cover 20 are sealed together. The inner wall of the outer muffler cover 10 and the outer wall of the inner muffler cover 20 enclose and form a sealed outer muffler cavity 11. The outer periphery of the outer muffler cover 10 arches away from the outer periphery of the inner muffler cover 20 to form an exhaust channel 12. 2. It is connected to the outer silencing cavity 11; the interior of the inner silencing cover 20 is the inner silencing cavity 21, and a flow hole 22 is provided through the axial end face of the inner silencing cover 20 to connect the inner silencing cavity 21 and the outer silencing cavity 11; the axial end face of the outer silencing cover 10 away from the inner silencing cover 20 protrudes in the direction away from the inner silencing cover 20 to form a petal-shaped protrusion 13, and an outer mounting hole 14 is provided in the center of the protrusion 13, and an inner mounting hole 23 is provided in the center of the inner silencing cover 20.
[0044] In this embodiment, the exhaust channel 12 has an arc-shaped arched structure, and the exhaust direction of the exhaust channel 12 is arranged radially. The edge of the inner mounting hole 23 protrudes away from the inner muffler cavity 21 to form a first flange 24, and the first flange 24 is spaced apart from the outer mounting hole 14; the edge of the outer mounting hole 14 protrudes away from the inner mounting hole 23 to form a second flange 15; wherein, the first flange 24 and the second flange 15 are both annular structures, the length of the first flange 24 in the axial direction is 4mm, and the length of the second flange 15 in the axial direction is 2mm. Further, the outer mounting hole 14 is suitable for fitting onto the object to be installed, the inner mounting hole 23 and the outer mounting hole 14 are arranged coaxially, and the radius of the inner mounting hole 23 is equal to the radius of the outer mounting hole 14. In addition, the outer periphery of the outer muffler cover 10 and the outer periphery of the inner muffler cover 20 are coaxially provided with fixing holes 30 of equal size.
[0045] The following is combined Figures 1 to 9 The following is a detailed description of a specific embodiment of the silencing device 100 according to the present invention. It is worth understanding that the following is merely an illustrative description and should not be construed as limiting the present invention.
[0046] This embodiment provides a muffler device 100, including an outer muffler cover 10 and an inner muffler cover 20. The outer muffler cover 10 covers the inner muffler cover 20, and the outer periphery of the outer muffler cover 10 and the outer periphery of the inner muffler cover 20 are sealed together. The inner wall of the outer muffler cover 10 and the outer wall of the inner muffler cover 20 enclose and form a sealed outer muffler cavity 11. The outer periphery of the outer muffler cover 10 arches away from the outer periphery of the inner muffler cover 20 to form an exhaust channel 12. 2. It is connected to the outer silencing cavity 11; the interior of the inner silencing cover 20 is the inner silencing cavity 21, and a flow hole 22 is provided through the axial end face of the inner silencing cover 20 to connect the inner silencing cavity 21 and the outer silencing cavity 11; the axial end face of the outer silencing cover 10 away from the inner silencing cover 20 protrudes in a direction away from the inner silencing cover 20 to form a petal-shaped protrusion 13, and an outer mounting hole 14 is provided in the center of the protrusion 13, and an inner mounting hole 23 is provided in the center of the inner silencing cover 20. In addition, in this embodiment, the axial end face of the inner silencing cover 20 away from the inner silencing cavity 21 is recessed to form a long strip-shaped groove 25.
[0047] In this embodiment, the exhaust channel 12 has an arc-shaped arched structure, and the exhaust direction of the exhaust channel 12 is arranged radially. The edge of the inner mounting hole 23 protrudes away from the inner muffler cavity 21 to form a first flange 24, and the first flange 24 is spaced apart from the outer mounting hole 14; the edge of the outer mounting hole 14 protrudes away from the inner mounting hole 23 to form a second flange 15; wherein, the first flange 24 and the second flange 15 are both annular structures, the length of the first flange 24 in the axial direction is 4mm, and the length of the second flange 15 in the axial direction is 2mm. Further, the outer mounting hole 14 is suitable for fitting onto the object to be installed, the inner mounting hole 23 is coaxially arranged with the outer mounting hole 14, and the radius of the inner mounting hole 23 is 1mm larger than the radius of the outer mounting hole 14. In addition, the outer periphery of the outer muffler cover 10 and the outer periphery of the inner muffler cover 20 are coaxially provided with fixing holes 30 of equal size.
[0048] Please see Figure 8 and 9 A second aspect of this utility model provides a pump body structure, which includes a silencing device 100 as described above, and further includes an upper bearing 200, a cylinder assembly 300, and a lower bearing 400 connected sequentially along the axial direction. The silencing device 100 is disposed on the upper bearing 200, and the outer periphery of the inner silencing cover 20 is sealed to the end face of the upper bearing 200 away from the cylinder assembly 300. According to the pump body structure of this utility model embodiment, the volume of the silencing cavity of the silencing device 100 and the flow path of the refrigerant gas can be effectively increased, thereby effectively improving the silencing effect of the silencing device 100.
[0049] A third aspect of this utility model provides a compressor that includes the pump body structure described above. The compressor according to this utility model embodiment can effectively increase the volume of the silencing cavity of the silencing device 100 and the flow path of the refrigerant gas, thereby effectively improving the silencing effect of the silencing device 100.
[0050] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model's silencer, pump structure, and compressor. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.
Claims
1. A noise reduction device, characterized in that: The device includes an outer muffler cover and an inner muffler cover. The outer muffler cover covers the inner muffler cover, and the outer periphery of the outer muffler cover and the outer periphery of the inner muffler cover are sealed together. The inner wall of the outer muffler cover and the outer wall of the inner muffler cover enclose and form a sealed outer muffler cavity. The outer periphery of the outer muffler cover arches away from the outer periphery of the inner muffler cover to form an exhaust channel, which is connected to the outer muffler cavity. The interior of the inner muffler cover is the inner muffler cavity, and a flow hole is provided through the inner muffler cover to connect the inner muffler cavity and the outer muffler cavity. The axial end face of the outer muffler cover away from the inner muffler cover protrudes away from the inner muffler cover to form a petal-shaped protrusion. An external mounting hole is provided in the center of the protrusion, and an internal mounting hole is provided in the center of the inner muffler cover.
2. The silencing device according to claim 1, characterized in that: The inner silencer cover has a through-hole at its axial end face.
3. The silencing device according to claim 1, characterized in that: The exhaust channel has an arc-shaped arched structure, and the exhaust direction of the exhaust channel is arranged radially.
4. The silencing device according to claim 1, characterized in that: The edge of the inner mounting hole protrudes in a direction away from the inner silencing cavity to form a first flange, and the first flange is spaced apart from the outer mounting hole.
5. The silencing device according to claim 1, characterized in that: The edge of the external mounting hole protrudes in a direction away from the internal mounting hole to form a second flange.
6. The silencing device according to claim 1, characterized in that: The inner silencing cover has a recessed groove formed on its axial end face opposite to the inner silencing cavity.
7. The silencing device according to claim 1, characterized in that: The outer mounting hole is adapted to be fitted onto the object to be installed. The inner mounting hole is coaxial with the outer mounting hole, and the radius of the inner mounting hole is greater than or equal to the radius of the outer mounting hole.
8. The silencing device according to claim 1, characterized in that: The outer periphery of the outer silencing cover and the outer periphery of the inner silencing cover are coaxially connected by fixing holes of equal size.
9. A pump body structure, characterized in that: Includes the silencing device according to any one of claims 1 to 8.
10. A compressor, characterized in that: Includes the pump body structure according to claim 9.