compressor

Abstract

The application discloses a compressor, which comprises a lower shell, a pump body and an inner exhaust pipe assembly, wherein the lower shell is provided with an outer exhaust pipe; the pump body is arranged in the lower shell and is provided with a high-pressure cavity at an end far from the exhaust pipe; and the inner exhaust pipe assembly is arranged in the lower shell and comprises a first pipe, a silencer, a second pipe and a cover, wherein the pipe length of the first pipe is smaller than that of the second pipe, one end of the first pipe is communicated with the outer exhaust pipe and the other end is communicated with the silencer, the silencer is arranged close to the outer exhaust pipe, one end of the silencer far from the first pipe is communicated with the second pipe, one end of the second pipe far from the silencer is communicated with the cover, and the cover is sealingly arranged in the high-pressure cavity. The compressor can change the mass distribution of the inner exhaust pipe assembly, reduce the mode of the inner exhaust pipe assembly, reduce the vibration response of the pump body transmitted to the lower shell, improve the fatigue life of the inner exhaust pipe assembly and improve the reliability of the compressor.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and in particular to a compressor. Background Technology

[0002] As the core component of a refrigerator system, the compressor drives the piston in a reciprocating motion within the cylinder via a crankshaft and connecting rod system. During each refrigeration cycle, the refrigerant is expelled from the cylinder by the piston and flows into the high-pressure chamber through a throttling orifice on the crankcase. One end of the internal exhaust pipe is installed in the high-pressure chamber of the crankcase, and the other end is welded to the exhaust pipe on the casing. The high-pressure gas shock wave discharged by the piston moves and attenuates within the internal exhaust pipe before finally flowing into the refrigerator system. In flexible design, the internal exhaust pipe needs to be appropriately "soft" to facilitate vibration reduction, but the first-order mode should not be too small or too large, and the length of the internal exhaust pipe should not be too long, otherwise it may affect the compressor's performance. However, current internal exhaust pipe designs suffer from exhaust pulsation and excessive exhaust noise; how to solve this problem has become one of the urgent issues to be addressed. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a compressor that can change the mass distribution of the internal exhaust pipe assembly, reduce the modal characteristics of the internal exhaust pipe assembly, reduce the vibration response transmitted from the pump body to the lower housing, improve the fatigue life of the internal exhaust pipe assembly, and improve the reliability of the compressor.

[0004] According to an embodiment of the present invention, a compressor includes: a lower housing, wherein the lower housing is provided with an external exhaust pipe; a pump body, wherein the pump body is disposed within the lower housing and has a high-pressure chamber at one end away from the exhaust pipe; and an internal exhaust pipe assembly, wherein the internal exhaust pipe assembly is disposed within the lower housing and includes a first pipe, a muffler, a second pipe, and a cover, wherein the length of the first pipe is less than the length of the second pipe, one end of the first pipe is connected to the external exhaust pipe and the other end is connected to the muffler, the muffler is disposed adjacent to the external exhaust pipe, the end of the muffler away from the first pipe is connected to the second pipe, the end of the second pipe away from the muffler is connected to the cover, and the cover is sealed in the high-pressure chamber.

[0005] According to an embodiment of the present invention, the compressor has a first pipe with a length shorter than the second exhaust pipe. One end of the first pipe is connected to the external exhaust pipe and the other end is connected to a muffler. The muffler is arranged adjacent to the external exhaust pipe. This can change the mass distribution of the internal exhaust pipe assembly, reduce the modal characteristics of the internal exhaust pipe assembly, reduce the vibration response transmitted from the pump body to the lower housing, improve the fatigue life of the internal exhaust pipe assembly, reduce the noise of the compressor, and improve the reliability of the compressor.

[0006] In some embodiments of the present invention, the lower housing has a first direction and a second direction that are perpendicular to each other, the high-pressure chamber and the external exhaust pipe are arranged along the first direction, the first pipe and the muffler are arranged along the second direction, and the muffler is adjacent to the shell wall of the lower housing in the first direction.

[0007] In some embodiments of the present invention, the first pipe has a first end and a second end, the first end is connected to the external exhaust pipe, the second end is connected to the muffler, and in the second direction, the distance between the projections of the first end and the second end on the horizontal plane is L1, and the distance between the first end and the center plane of the lower housing in the second direction is L2, wherein L2 > L1.

[0008] In some embodiments of the present invention, the center of the silencing element is adjacent to the center plane of the lower housing in the second direction.

[0009] In some embodiments of the present invention, the pump body includes a main body and a first extension, a second extension, a third extension and a fourth extension disposed at four corner positions of the main body. The first extension and the second extension are disposed opposite to each other in a first direction, and the first extension is provided with the high-pressure chamber. The second extension is adjacent to the external exhaust pipe. The third extension and the second extension are disposed opposite to each other in a second direction. The fourth extension and the first extension are disposed opposite to each other in a second direction. The bottoms of the first extension, the second extension, the third extension and the fourth extension are connected to the lower housing by a seat spring. The muffler is disposed between the second extension and the third extension.

[0010] In some embodiments of the present invention, the first pipe includes a first horizontal section and a vertical section, one end of the vertical section is connected to the external exhaust pipe, and the other end is connected to the first horizontal section by a rounded transition. The first horizontal section is located on the upper side of the second extension and is connected to the muffler.

[0011] In some embodiments of the present invention, the second tube includes a second horizontal segment, a first U-shaped segment, a third horizontal segment, a second U-shaped segment, and a fourth horizontal segment. The second horizontal segment is located above the third extension and has one end arc-shaped to connect to the silencing component, and the other end arc-shaped to connect to the first U-shaped segment. The first U-shaped segment is arranged vertically and is disposed between the third extension and the fourth extension. The first U-shaped segment arc-shaped to connect to the third horizontal segment. The third horizontal segment is disposed above the fourth extension and arc-shaped to connect to the second U-shaped segment. The second U-shaped segment is arranged vertically and is disposed between the fourth extension and the first extension. The second U-shaped segment arc-shaped to connect to the fourth horizontal segment. The fourth horizontal segment is located above the first extension and connects to the cap.

[0012] In some embodiments of the present invention, the second tube includes a first part, a silencing part, and a second part. One end of the first part is connected to the cap and the other end is connected to the silencing part. The silencing part is disposed adjacent to the high-pressure chamber. One end of the second part is connected to the silencing part and the other end is connected to the silencing component.

[0013] In some embodiments of the present invention, the pump body includes a main body and a first extension, a second extension, a third extension, and a fourth extension disposed at four corner positions of the main body. The first extension and the second extension are disposed opposite to each other in a first direction, and the first extension is provided with the high-pressure chamber. The second extension is adjacent to the external exhaust pipe. The third extension and the second extension are disposed opposite to each other in a second direction. The fourth extension and the first extension are disposed opposite to each other in a second direction. The bottoms of the first extension, the second extension, the third extension, and the fourth extension are connected to the lower housing by seat springs. The silencing element is disposed between the second extension and the third extension, and the silencing part is disposed between the first extension and the fourth extension.

[0014] In some embodiments of the present invention, the compressor includes an intake pipe disposed on the lower housing and adjacent to the external exhaust pipe, and the muffler is disposed on the side of the intake pipe away from the external exhaust pipe.

[0015] 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. Attached Figure Description

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1A top view of a compressor section structure provided in some embodiments of the present invention;

[0018] Figure 2 A three-dimensional structural schematic diagram of the lower housing provided in some embodiments of the present invention;

[0019] Figure 3 A top view of the lower housing provided in some embodiments of the present invention;

[0020] Figure 4 A three-dimensional structural schematic diagram of the pump body and internal exhaust pipe assembly provided in some embodiments of the present invention;

[0021] Figure 5 A top view of a compressor section structure provided in some embodiments of the present invention;

[0022] Figure 6 A three-dimensional structural diagram of a compressor component provided in some embodiments of the present invention;

[0023] Figure 7 A side view of a compressor section structure provided in some other embodiments of the present invention;

[0024] Figure 8 This is a three-dimensional structural schematic diagram of an internal exhaust pipe assembly provided in some embodiments of the present invention.

[0025] Figure label:

[0026] 100. Compressor;

[0027] 10. Lower housing; 10a. First hole; 10b. Second hole; 11. External exhaust pipe;

[0028] 20. Pump body; 201. High-pressure chamber; 21. Main body; 22. First extension; 23. Second extension; 24. Third extension; 25. Fourth extension;

[0029] 30. Internal exhaust pipe assembly;

[0030] 31. First pipe; 311. First horizontal segment; 312. Vertical segment; 313. First end; 314. Second end;

[0031] 32. Silencing components;

[0032] 33. Second pipe; 331. Second horizontal section; 332. First U-shaped section; 333. Third horizontal section; 334. Second U-shaped section; 335. Fourth horizontal section; 336. First part; 337. Muffler; 338. Second part;

[0033] 34. Cap; 34a. Sealing surface; 341. Screw;

[0034] 40. Inhalation tube. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] Furthermore, features specified as "first" or "second" may explicitly or implicitly include one or more of the same feature, used to distinguish and describe features, without any order or distinction of importance.

[0038] In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] The following is for reference. Figures 1-8 The compressor 100 of an embodiment of the present invention is described below.

[0041] like Figures 1 to 4As shown, the compressor 100 of this embodiment includes: a lower housing 10, a pump body 20, and an internal exhaust pipe assembly 30. The lower housing 10 is provided with an external exhaust pipe 11. The pump body 20 is disposed inside the lower housing 10, and a high-pressure chamber 201 is provided at one end away from the exhaust pipe. The internal exhaust pipe assembly 30 is disposed inside the lower housing 10 and includes a first pipe 31, a silencer 32, a second pipe 33, and a cover 34. The length of the first pipe 31 is less than the length of the second pipe 33. One end of the first pipe 31 is connected to the external exhaust pipe 11, and the other end is connected to the silencer 32. The silencer 32 is disposed adjacent to the external exhaust pipe 11. The end of the silencer 32 away from the first pipe 31 is connected to the second pipe 33. The end of the second pipe 33 away from the silencer 32 is connected to the cover 34. The cover 34 is sealed in the high-pressure chamber 201.

[0042] The lower housing 10 can refer to the housing that protects and installs internal components. The material can be, but is not limited to, alloy steel, stainless steel, aluminum alloy, and composite materials. The lower housing 10 is provided with an external exhaust pipe 11 for discharging the gas generated by the pump body 20 during operation from the compressor 100.

[0043] The pump body 20 can refer to a component that provides a sealed space for gas compression. The pump body 20 is located inside the lower housing 10, and the pump body 20 and the lower housing 10 are connected by a seat spring, which reduces the vibration response transmitted from the pump body 20 to the lower housing 10 of the compressor 100. At the same time, the pump body 20 can also move along the axial direction of the seat spring during operation. A high-pressure chamber 201 is provided at the end of the pump body 20 away from the exhaust pipe. The high-pressure chamber 201 can refer to the area inside the pump body 20 where the operating pressure is relatively high.

[0044] The internal exhaust pipe assembly 30 refers to the assembly that transports the gas from the pump body 20 to the external exhaust pipe 11. The internal exhaust pipe assembly 30 is located inside the lower housing 10. In the above technical solution, the internal exhaust pipe assembly 30 includes a first pipe 31, a muffler 32, a second pipe 33, and a cover 34. One end of the first pipe 31 is connected to the external exhaust pipe 11, and the other end is connected to the muffler 32. The end of the muffler 32 away from the first pipe 31 is connected to the second pipe 33. The end of the second pipe 33 away from the muffler 32 is connected to the cover 34. The cover 34 is sealed in the high-pressure chamber 201, so that the airflow is discharged from the pump body 20, undergoes pressure attenuation on the second pipe 33, and then flows into the expansion chamber of the muffler 32. The gas expands in the muffler 32, further reducing noise. The airflow enters the first pipe 31, which is connected to the external exhaust pipe 11. Finally, the gas flows to the external exhaust pipe 11, completing one cycle of high-pressure gas. The silencer 32 can exert a force on the pump body 20 through the first pipe 31, increasing the vibration intensity of the pump body 20 and thus increasing the noise of the compressor 100. Therefore, the length of the first pipe 31 is shorter than the length of the second exhaust pipe. The silencer 32 is positioned close to the external exhaust pipe 11, which can reduce the force exerted by the silencer 32 on the pump body 20, thereby reducing the vibration response transmitted from the pump body 20 to the lower housing 10 of the compressor 100 and reducing the noise of the compressor 100. The materials of the first pipe 31, the silencer 32, and the second pipe 33 can be metal to ensure the structural strength of the first pipe 31, the silencer 32, and the second pipe 33. Meanwhile, referring to... Figure 4 The silencing component 32 can be a silencing package.

[0045] The muffler 32 refers to a component with an internal muffler cavity that can perform a muffler function, such as a muffler bag as defined in this art. The cover 34 and the second pipe 33 can be fixed by welding to ensure the connection strength between the cover 34 and the second pipe 33. The cover 34 is equipped with screws 341, and the cover 34 is mounted on the high-pressure chamber 201 by the screws 341. The end face of the cover 34 near the high-pressure chamber 201 is the sealing surface 34a, which needs to be polished to prevent air leakage. Simultaneously, the connection between the cover 34 and the second pipe 33 adopts a straight-out structure, which can improve the fatigue life of the internal exhaust pipe assembly 30.

[0046] In addition, the lower housing 10 is provided with a first hole 10a, through which the external exhaust pipe 11 is installed on the lower housing 10.

[0047] It is understandable that the two ends of the internal exhaust pipe assembly 30 are connected to the high-pressure chamber 201 and the external exhaust pipe 11, respectively. The high-pressure chamber 201 and the external exhaust pipe 11 can support and install the internal exhaust pipe assembly 30. Since the pump body 20 moves along the axial direction of the seat spring when it is working, the connection between the internal exhaust pipe assembly 30 and the external exhaust pipe 11 is equivalent to the fixed support section, and the connection between the internal exhaust pipe assembly 30 and the high-pressure chamber 201 is equivalent to the suspended section. Therefore, it can be regarded as a cantilever beam structure. The part where the internal exhaust pipe assembly 30 is welded to the lower housing 10 is equivalent to the fixed support of the cantilever beam. The position of the muffler 32 in the internal exhaust pipe assembly 30 is equivalent to adding mass to the cantilever beam, which will affect the vibration of the cantilever beam. If the mass is installed in the fixed support section of the cantilever beam, the vibration of the cantilever beam will be less than if the mass is installed at the end of the cantilever beam. The length of the first pipe 31 is less than the length of the second exhaust pipe. The muffler 32 is set close to the external exhaust pipe 11, which can reduce the vibration of the pump body 20 transmitted to the lower housing 10.

[0048] According to an embodiment of the present invention, the compressor 100 has a first pipe 31 with a length less than that of the second exhaust pipe. One end of the first pipe 31 is connected to the external exhaust pipe 11 and the other end is connected to the muffler 32. The muffler 32 is disposed adjacent to the external exhaust pipe 11. This can change the mass distribution of the internal exhaust pipe assembly 30, reduce the modal characteristics of the internal exhaust pipe assembly 30, reduce the vibration response transmitted from the pump body 20 to the lower housing 10, improve the fatigue life of the internal exhaust pipe assembly 30, reduce the noise of the compressor 100, and improve the reliability of the compressor 100.

[0049] In some embodiments of the present invention, a spring may be provided on the internal exhaust pipe assembly 30. In the above technical solution, the spring can be used as a counterweight to increase the mass of the internal exhaust pipe assembly 30, reduce the modal displacement of the internal exhaust pipe assembly 30, and further improve the reliability of the internal exhaust pipe assembly 30.

[0050] In some embodiments of the present invention, reference is made to Figure 1 The lower housing 10 has a first direction and a second direction that are perpendicular to each other. The high-pressure chamber 201 and the external exhaust pipe 11 are arranged along the first direction, and the first pipe 31 and the muffler 32 are arranged along the second direction. The muffler 32 is adjacent to the shell wall of the lower housing 10 in the first direction.

[0051] refer to Figure 1 The first direction can be Figure 1 The front and back directions, the second direction is Figure 1 In the above technical solution, the silencer 32 is close to the shell wall of the lower housing 10 in the first direction, which facilitates the arrangement and installation of other components, making the arrangement of the components of the compressor 100 compact and aesthetically pleasing, and improving the space utilization of the compressor 100.

[0052] In some embodiments of the present invention, reference is made to Figure 1 and Figure 4 The first pipe 31 has a first end 313 and a second end 314. The first end 313 is connected to the external exhaust pipe 11, and the second end 314 is connected to the muffler 32. In the second direction, the distance between the projections of the first end 313 and the second end 314 on the horizontal plane is L1, and the distance between the first end 313 and the center plane of the lower housing 10 in the second direction is L2, wherein L2 > L1.

[0053] In the above technical solution, by making L2 > L1, the muffler 32 can be moved closer to one end of the external exhaust pipe 11 and further away from the high-pressure chamber 201, thereby changing the mass distribution on the internal exhaust pipe assembly 30. This makes the center of gravity of the internal exhaust pipe assembly 30 closer to the external exhaust pipe 11 and further away from the high-pressure chamber 201, reducing the force exerted by the muffler 32 on the pump body 20. In turn, this reduces the vibration response transmitted from the pump body 20 to the lower housing 10 of the compressor 100, reduces the noise of the compressor 100, and improves the reliability of the compressor 100.

[0054] In some embodiments of the present invention, reference is made to Figure 1 The center of the muffler 32 is adjacent to the center plane of the lower housing 10 in the second direction. In the above technical solution, the center of the muffler 32 is adjacent to the center plane of the lower housing 10 in the second direction, which can make the center of gravity of the muffler 32 closer to the external exhaust pipe 11, so that the external exhaust pipe 11 bears most of the weight of the muffler 32, reducing the impact of the mass of the muffler 32 on the high-pressure chamber 201, thereby reducing the vibration response of the pump body 20 transmitted to the lower housing 10 of the compressor 100, and improving the reliability of the internal exhaust pipe assembly 30.

[0055] In some embodiments of the present invention, reference is made to Figure 1 and Figure 4 The pump body 20 includes a main body 21 and four extensions 22, 23, 24 and 25 located at the four corners of the main body 21. The first extension 22 and the second extension 23 are arranged opposite to each other in a first direction, and the first extension 22 is provided with a high-pressure chamber 201. The second extension 23 is adjacent to the external exhaust pipe 11. The third extension 24 and the second extension 23 are arranged opposite to each other in a second direction. The fourth extension 25 and the first extension 22 are arranged opposite to each other in a second direction. The bottoms of the first extension 22, the second extension 23, the third extension 24 and the fourth extension 25 are connected to the lower housing 10 by a seat spring. The muffler 32 is located between the second extension 23 and the third extension 24.

[0056] It is understandable that the bottoms of the first extension 22, the second extension 23, the third extension 24 and the fourth extension 25 are connected to the lower housing 10 by seat springs. The seat springs can stably support the pump body 20, prevent radial deformation of the seat springs, ensure that the pump body 20 moves along the axial direction of the seat springs when it vibrates during operation, reduce the vibration response of the pump body 20 transmitted to the lower housing 10, and thus reduce the noise of the compressor 100.

[0057] In the above technical solution, by setting the silencing component 32 between the second extension 23 and the third extension 24, the space on the pump body 20 can be fully utilized, making the layout of each component more compact and improving the space utilization of the compressor 100. At the same time, the center position of the lower housing 10 can be left as empty as possible, which is convenient for arranging other components and further improving the space utilization of the compressor 100.

[0058] In some embodiments of the present invention, reference is made to Figure 4 The first pipe 31 includes a first horizontal section 311 and a vertical section 312. One end of the vertical section 312 is connected to the external exhaust pipe 11, and the other end is connected to the first horizontal section 311 by a rounded transition. The first horizontal section 311 is located on the upper side of the second extension 23 and is connected to the muffler 32.

[0059] Understandably, the length of the first pipe 31 should not be too long or too short, and its design needs to take into account factors such as response, modality, and fatigue. In the above technical solution, the design of the first horizontal section 311 and the vertical section 312 can increase the length of the first pipe 31, thereby increasing the airflow transmission path and improving the pressure attenuation of the airflow on the first pipe 31, further improving the noise reduction effect of the internal exhaust pipe assembly 30. At the same time, the arc transition connection between the first horizontal section 311 and the vertical section 312 can avoid pressure concentration at the connection point and improve the structural strength of the first pipe 31.

[0060] In some embodiments of the present invention, reference is made to Figure 4 The second tube 33 includes a second horizontal section 331, a first U-shaped section 332, a third horizontal section 333, a second U-shaped section 334, and a fourth horizontal section 335. The second horizontal section 331 is located on the upper side of the third extension 24, and one end is connected to the muffler 32 by an arc transition, while the other end is connected to the first U-shaped section 332 by an arc transition. The first U-shaped section 332 is arranged vertically and is located between the third extension 24 and the fourth extension 25. The first U-shaped section 332 is connected to the third horizontal section 333 by an arc transition. The third horizontal section 333 is located on the upper side of the fourth extension 25 and is connected to the second U-shaped section 334 by an arc transition. The second U-shaped section 334 is arranged vertically and is located between the fourth extension 25 and the first extension 22. The second U-shaped section 334 is connected to the fourth horizontal section 335 by an arc transition. The fourth horizontal section 335 is located on the upper side of the first extension 22 and is connected to the cap 34.

[0061] The length of the second pipe 33 should be neither too long nor too short, and its design should take into account factors such as response, modality, and fatigue. In the above technical solution, the design of the second horizontal segment 331, the first U-shaped segment 332, the third horizontal segment 333, the second U-shaped segment 334, and the fourth horizontal segment 335 can increase the length of the second pipe 33, thereby increasing the airflow transmission path, improving the pressure attenuation amplitude on the second pipe 33, and further improving the noise reduction effect of the internal exhaust pipe assembly 30. At the same time, the arc transition connection between the components can avoid pressure concentration at the connection point and improve the structural strength of the second pipe 33.

[0062] In some embodiments of the present invention, reference is made to Figures 5 to 8 The second tube 33 includes a first part 336, a silencing part 337, and a second part 338. One end of the first part 336 is connected to the cover 34 and the other end is connected to the silencing part 337. The silencing part 337 is disposed adjacent to the high-pressure chamber 201. One end of the second part 338 is connected to the silencing part 337 and the other end is connected to the silencing component 32.

[0063] refer to Figure 8 The silencing part 337 can be a silencing structure, and its structure can be the same as or different from that of the silencing component 32.

[0064] In the above technical solution, the design of the muffler 32 and the muffler section 337 allows for a more uniform distribution of the center of mass of the internal exhaust pipe assembly 30. This avoids the large mass at one end of the cantilever structure of the internal exhaust pipe assembly 30, which would affect the vibration reduction effect. This reduces the modal vibrations of the internal exhaust pipe assembly 30 and the vibration response transmitted to the lower housing 10, thereby reducing the noise of the compressor 100. Furthermore, after the high-pressure gas exits the high-pressure chamber 201, it dissipates through the muffler 32 and the muffler section 337 before finally entering the external exhaust pipe 11 on the lower housing 10. This further enhances the vibration attenuation effect on the pump body 20, further reducing the noise of the compressor 100.

[0065] In some embodiments of the present invention, reference is made to Figures 5 to 8 The pump body 20 includes a main body 21 and four extensions 22, 23, 24 and 25 located at the four corners of the main body 21. The first extension 22 and the second extension 23 are arranged opposite to each other in a first direction, and the first extension 22 is provided with a high-pressure chamber 201. The second extension 23 is adjacent to the external exhaust pipe 11. The third extension 24 and the second extension 23 are arranged opposite to each other in a second direction. The fourth extension 25 and the first extension 22 are arranged opposite to each other in a second direction. The bottoms of the first extension 22, the second extension 23, the third extension 24 and the fourth extension 25 are connected to the lower housing 10 by a seat spring. The muffler 32 is located between the second extension 23 and the third extension 24, and the muffler 337 is located between the first extension 22 and the fourth extension 25.

[0066] In the above technical solution, by placing the muffler 32 between the second extension 23 and the third extension 24, and by placing the muffler 337 between the first extension 22 and the fourth extension 25, the distance between the internal exhaust pipe assembly 30 and the pump body 20 can be reduced, making full use of the space on the pump body 20, making the layout of each component more compact, and improving the space utilization rate of the compressor 100. At the same time, the center position of the lower housing 10 can be left as empty as possible, which is convenient for arranging other components and further improving the space utilization rate of the compressor 100.

[0067] In some embodiments of the present invention, reference is made to Figure 1 , Figure 5 , Figure 5 and Figure 7 The compressor 100 includes a suction pipe 40, which is located on the lower housing 10 and adjacent to the external exhaust pipe 11. The muffler 32 is located on the side of the suction pipe 40 away from the external exhaust pipe 11.

[0068] refer to Figure 1 and 2 The lower housing 10 is provided with a second hole 10b, through which the suction pipe 40 is installed on the lower housing 10. In the above technical solution, the suction pipe 40 can be connected to the pump body 20 through a pipe, which facilitates the entry of external air into the pump body 20, and the compressor 100 performs the function of compressing air.

[0069] The following is combined with Figures 1 to 4 This describes a specific embodiment of the compressor 100 of the present invention.

[0070] The compressor 100 includes: a lower housing 10, a pump body 20, an internal exhaust pipe assembly 30, and an intake pipe 40.

[0071] The lower housing 10 is provided with an external exhaust pipe 11, and the lower housing 10 has a first direction and a second direction that are perpendicular to each other. The high pressure chamber 201 and the external exhaust pipe 11 are arranged along the first direction, the first pipe 31 and the muffler 32 are arranged along the second direction, and the muffler 32 is adjacent to the shell wall of the lower housing 10 in the first direction.

[0072] The pump body 20 includes a main body 21 and four extensions 22, 23, 24 and 25 located at the four corners of the main body 21. The first extension 22 and the second extension 23 are arranged opposite to each other in a first direction, and the first extension 22 is provided with a high-pressure chamber 201. The second extension 23 is adjacent to the external exhaust pipe 11. The third extension 24 and the second extension 23 are arranged opposite to each other in a second direction. The fourth extension 25 and the first extension 22 are arranged opposite to each other in a second direction. The bottoms of the first extension 22, the second extension 23, the third extension 24 and the fourth extension 25 are connected to the lower housing 10 by a seat spring. The muffler 32 is located between the second extension 23 and the third extension 24.

[0073] The internal exhaust pipe assembly 30 is located inside the lower housing 10 and includes a first pipe 31, a muffler 32, a second pipe 33, and a cover 34. The length of the first pipe 31 is shorter than the length of the second pipe 33. One end of the first pipe 31 is connected to the external exhaust pipe 11 and the other end is connected to the muffler 32. The muffler 32 is located adjacent to the external exhaust pipe 11. The end of the muffler 32 away from the first pipe 31 is connected to the second pipe 33. The end of the second pipe 33 away from the muffler 32 is connected to the cover 34. The cover 34 is sealed in the high-pressure chamber 201.

[0074] The first pipe 31 includes a first horizontal section 311 and a vertical section 312. One end of the vertical section 312 is connected to the external exhaust pipe 11, and the other end is connected to the first horizontal section 311 by a rounded transition. The first horizontal section 311 is located above the second extension 23 and is connected to the muffler 32. The first pipe 31 also has a first end 313 and a second end 314. The first end 313 is connected to the external exhaust pipe 11, and the second end 314 is connected to the muffler 32. In the second direction, the distance between the projections of the first end 313 and the second end 314 onto the horizontal plane is L1, and the distance between the first end 313 and the center plane of the lower housing 10 in the second direction is L2, where L2 > L1.

[0075] The center of the silencing component 32 is adjacent to the center surface of the lower housing 10 in the second direction.

[0076] The second tube 33 includes a second horizontal section 331, a first U-shaped section 332, a third horizontal section 333, a second U-shaped section 334, and a fourth horizontal section 335. The second horizontal section 331 is located on the upper side of the third extension 24, and one end is connected to the muffler 32 by an arc transition, while the other end is connected to the first U-shaped section 332 by an arc transition. The first U-shaped section 332 is arranged vertically and is located between the third extension 24 and the fourth extension 25. The first U-shaped section 332 is connected to the third horizontal section 333 by an arc transition. The third horizontal section 333 is located on the upper side of the fourth extension 25 and is connected to the second U-shaped section 334 by an arc transition. The second U-shaped section 334 is arranged vertically and is located between the fourth extension 25 and the first extension 22. The second U-shaped section 334 is connected to the fourth horizontal section 335 by an arc transition. The fourth horizontal section 335 is located on the upper side of the first extension 22 and is connected to the cap 34.

[0077] The intake pipe 40 is located on the lower housing 10 and is adjacent to the external exhaust pipe 11. The muffler 32 is located on the side of the intake pipe 40 away from the external exhaust pipe 11.

[0078] In the description of this specification, references to terms such as "some embodiments," "optionally," "furthermore," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0079] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A compressor, characterized in that, include: The lower housing is provided with an external exhaust pipe; The pump body is located inside the lower housing, and a high-pressure chamber is provided at one end away from the exhaust pipe; An internal exhaust pipe assembly is disposed within the lower housing and includes a first pipe, a muffler, a second pipe, and a cover. The length of the first pipe is shorter than the length of the second pipe. One end of the first pipe is connected to the external exhaust pipe, and the other end is connected to the muffler. The muffler is disposed adjacent to the external exhaust pipe. The end of the muffler away from the first pipe is connected to the second pipe, and the end of the second pipe away from the muffler is connected to the cover. The cover is sealed within the high-pressure chamber. The lower housing has a first direction and a second direction that are perpendicular to each other. The high-pressure chamber and the external exhaust pipe are arranged along the first direction, the first pipe and the muffler are arranged along the second direction, and the muffler is adjacent to the shell wall of the lower housing in the first direction. The first pipe has a first end and a second end. The first end is connected to the external exhaust pipe, and the second end is connected to the muffler. In the second direction, the distance between the projections of the first end and the second end on the horizontal plane is L1, and the distance between the first end and the center plane of the lower housing in the second direction is L2, wherein L2 > L1. The center of the silencing component is adjacent to the center plane of the lower housing in the second direction.

2. The compressor according to claim 1, characterized in that, The pump body includes a main body and four extensions located at the four corners of the main body: a first extension, a second extension, a third extension, and a fourth extension. The first extension and the second extension are arranged opposite each other in the first direction, and the first extension has the high-pressure chamber. The second extension is adjacent to the external exhaust pipe. The third extension and the second extension are arranged opposite each other in the second direction, and the fourth extension and the first extension are arranged opposite each other in the second direction. The bottoms of the first extension, the second extension, the third extension, and the fourth extension are connected to the lower housing by seat springs. The muffler is located between the second extension and the third extension.

3. The compressor according to claim 2, characterized in that, The first pipe includes a first horizontal section and a vertical section. One end of the vertical section is connected to the external exhaust pipe, and the other end is connected to the first horizontal section by a rounded transition. The first horizontal section is located on the upper side of the second extension and is connected to the muffler.

4. The compressor according to claim 2 or 3, characterized in that, The second tube includes a second horizontal segment, a first U-shaped segment, a third horizontal segment, a second U-shaped segment, and a fourth horizontal segment. The second horizontal segment is located above the third extension and has one end connected to the silencing component via an arc transition, while the other end is connected to the first U-shaped segment via an arc transition. The first U-shaped segment is arranged vertically and is located between the third extension and the fourth extension. The first U-shaped segment is connected to the third horizontal segment via an arc transition. The third horizontal segment is located above the fourth extension and is connected to the second U-shaped segment via an arc transition. The second U-shaped segment is arranged vertically and is located between the fourth extension and the first extension. The second U-shaped segment is connected to the fourth horizontal segment via an arc transition. The fourth horizontal segment is located above the first extension and is connected to the cap.

5. The compressor according to claim 1, characterized in that, The second tube includes a first part, a silencing part, and a second part. One end of the first part is connected to the cover and the other end is connected to the silencing part. The silencing part is disposed adjacent to the high-pressure chamber. One end of the second part is connected to the silencing part and the other end is connected to the silencing component.

6. The compressor according to claim 5, characterized in that, The pump body includes a main body and four extensions located at the four corners of the main body: a first extension, a second extension, a third extension, and a fourth extension. The first extension and the second extension are arranged opposite each other in a first direction, and the first extension has the high-pressure chamber. The second extension is adjacent to the external exhaust pipe. The third extension and the second extension are arranged opposite each other in a second direction, and the fourth extension and the first extension are arranged opposite each other in a second direction. The bottoms of the first extension, the second extension, the third extension, and the fourth extension are connected to the lower housing via seat springs. The silencing element is located between the second extension and the third extension, and the silencing part is located between the first extension and the fourth extension.

7. The compressor according to claim 1, characterized in that, The compressor includes an intake pipe, which is disposed on the lower housing and adjacent to the exhaust pipe, and the muffler is disposed on the side of the intake pipe away from the exhaust pipe.

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