An exhaust structure and a compressor having the same

Abstract

The present invention provides an exhaust structure and a compressor having the same, wherein the exhaust structure includes a balancing block and a push rod, wherein the first end of the push rod abuts against the balancing block, and the second end of the push rod abuts against an elastic component, and the elastic component is arranged in an exhaust pipe. The balancing block has a cam profile, and in the process of the balancing block driving the push rod to move, the cam profile forms a periodic motion trajectory to periodically close the exhaust port of the exhaust pipe. When the balancing block rotates within an angle range, the push rod moves inward relative to the exhaust pipe, and the push rod squeezes the elastic component, at which time the push rod closes the exhaust port of the exhaust pipe. When the balancing block rotates to another angle range, the push rod moves outward relative to the exhaust pipe, and the elastic component restores its deformation, at which time the push rod opens the exhaust port of the exhaust pipe to discharge the gas in the compressor. Periodically closing the exhaust port can delay the discharge process of the oil-gas mixture, can better achieve oil-gas separation, and prevent the compressor from being short of oil under high-frequency working conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to an exhaust structure and a compressor having the same. Background Art

[0002] The compressor is an important part of the air conditioning system, and the performance of the compressor is directly related to the energy efficiency ratio of the air conditioner. Existing compressors are gradually developing towards high speed and high efficiency. The oil discharge of the scroll compressor is positively correlated with the compressor frequency and compressor displacement, that is, the compressor oil discharge increases with the increase of frequency, and the compressor oil discharge also increases with the increase of compressor displacement.

[0003] The scroll compressor is a positive displacement compressor. The motor drives the crankshaft to rotate, and the movable scroll is driven by the crankshaft to orbit and translate around the stationary scroll, thereby realizing the periodic change of the enclosed volume and achieving the purpose of compressing the gas. When the compressor is exhausted, due to the mutual solubility of the refrigerant and the lubricating oil, the lubricating oil will be discharged from the compressor along with the refrigerant, resulting in a reduction in the lubricating oil of the compressor. In addition, too much lubricating oil mixed with the refrigerant will lead to a decrease in heat exchange efficiency and reduce energy efficiency. The exhaust ports of existing compressors are all opened in real time. The lubricating oil and refrigerant mixed gas coming out of the exhaust port of the stationary scroll is directly discharged from the exhaust port without sufficient oil separation, which accelerates the circulation of the compressor oil, increases the power consumption of the system, and in severe cases causes the compressor to lack oil.

[0004] Therefore, there is a need for an exhaust structure that can enable the compressor to exhaust within a specific rotation angle range, allowing the lubricating oil and refrigerant mixed gas to be separated in the compressor, thereby reducing the oil content in the gas and improving the compressor energy efficiency and compressor exhaust efficiency. Summary of the invention

[0005] In order to overcome the problems existing in the related technology, one of the objects of the present invention is to provide an exhaust structure, which can enable the compressor to exhaust within a specific rotation angle range, so that the lubricating oil and refrigerant mixed gas can be separated in the compressor, thereby reducing the oil content of the gas and improving the compressor energy efficiency and compressor exhaust efficiency.

[0006] An exhaust structure includes a balance block and a push rod, wherein the first end of the push rod abuts against the balance block, and the second end of the push rod abuts against an elastic component, and the elastic component is arranged in an exhaust pipe; the balance block has a cam profile, and when the balance block drives the push rod to move, the cam profile forms a periodic motion trajectory to periodically close the exhaust port of the exhaust pipe.

[0007] Since the balance block has a cam profile, the balance block rotates, driving the push rod to move in the exhaust pipe. When the balance block rotates within an angle range, the push rod moves inward relative to the exhaust pipe, and the push rod squeezes the elastic component. At this time, the push rod closes the exhaust port of the exhaust pipe. When the balance block rotates to another angle range, the push rod moves outward relative to the exhaust pipe, and the elastic component restores its deformation. At this time, the push rod opens the exhaust port of the exhaust pipe and discharges the gas in the compressor. For each rotation of the balance block, the exhaust port is closed for part of the time. When the exhaust port is closed, the oil-gas mixture cannot be discharged from the exhaust pipe. Periodically closing the exhaust port can delay the discharge process of the oil-gas mixture, better achieve oil-gas separation, improve the compressor energy efficiency and compressor exhaust efficiency, and prevent the compressor from lacking oil under high-frequency conditions.

[0008] In a preferred technical solution of the present invention, the exhaust structure further comprises a crankshaft, the balancing block is connected to the crankshaft, and the balancing block is driven to rotate when the crankshaft rotates.

[0009] The balancing block may be mounted on the crankshaft, or a connecting structure may be provided on the crankshaft to connect the balancing block and the crankshaft.

[0010] In a preferred technical solution of the present invention, the exhaust port is located on the side wall of the exhaust pipe; the push rod is located outside the exhaust port and is arranged close to the exhaust port.

[0011] The push rod moves inward until it blocks all exhaust ports. At this time, the gas in the upper half of the compressor cavity cannot enter the exhaust port. When the push rod moves outward, opening part or all of the exhaust port, the gas in the upper half of the compressor cavity passes through the exhaust port into the exhaust pipe and is discharged from the exhaust pipe.

[0012] In a preferred technical solution of the present invention, a first protrusion is provided on a side of the push rod close to the exhaust pipe, the first protrusion is inserted into the exhaust pipe, and the balance block drives the first protrusion to move in the exhaust pipe.

[0013] During the movement of the first protrusion of the push rod driven by the balancing block, when the rotation angle of the balancing block is within an angle range, the first protrusion moves toward the exhaust pipe to compress the elastic component, and the movable end of the elastic component moves toward the fixed end of the elastic component. The balancing block pushes the first protrusion into the exhaust pipe until the first protrusion blocks the exhaust port. When the rotation angle of the balancing block is within another angle range, the first protrusion moves toward the outside of the exhaust pipe until the first protrusion opens the exhaust port. Using the first protrusion to periodically close the exhaust port can extend the time that the oil-gas mixture stays in the upper cavity of the compressor housing, thereby better achieving oil-gas separation.

[0014] In a preferred technical solution of the present invention, the balancing weight includes a chassis, and a second protrusion is circumferentially arranged on the chassis.

[0015] When the cam profile forms a periodic motion trajectory within a certain angle range while the balance block drives the push rod to move, the second protrusion is fully in contact with the push rod, and the push rod is fully stressed. Driven by the second protrusion of the balance block, the push rod moves toward the elastic component at a certain speed until the push rod stops moving. At this time, the exhaust port is in a closed state, thereby separating the oil and gas mixture in the compressor casing, reducing the circulation rate of the compressor oil, and improving the utilization efficiency of the compressor oil.

[0016] In a preferred technical solution of the present invention, a filter assembly is provided in the exhaust pipe, the movable end of the elastic component abuts against the first protrusion, and the fixed end of the elastic component is connected to the filter assembly.

[0017] The gas in the compressor housing can flow into the exhaust pipe from the exhaust port, and then be discharged from the compressor after being filtered by the filter component in the exhaust pipe.

[0018] In a preferred technical solution of the present invention, the motion trajectory includes a near-rest segment, with the near-rest segment as the starting segment, and along the direction opposite to the rotation direction of the crankshaft, there are a push segment, a far-rest segment and a return segment in sequence.

[0019] When the balance block is in the resting section, the contour of the balance block is a constant radius arc, and the push rod will not be displaced when in contact with the constant radius arc, so that the exhaust port can be kept open or closed at this stage. The function of the push section and the return section is to change the opening and closing state of the exhaust port.

[0020] In a preferred technical solution of the present invention, the near rest segment corresponds to a first central angle, the push segment corresponds to a second central angle, the far rest segment corresponds to a third central angle, and the return segment corresponds to a fourth central angle. The sum of the first central angle, the second central angle, the third central angle and the fourth central angle is 360 degrees; the maximum displacement of the push rod is determined by the difference between the arc radii of the far rest segment and the near rest segment.

[0021] The four arcs of the cam profile can be modified accordingly according to different needs. The exhaust port can be designed to be in an open state when the pump body is compressed and exhausted, and in a closed state when the pump body is not exhausted, so as to facilitate the oil separation of the gas in the compressor casing.

[0022] In a preferred technical solution of the present invention, in the pushing section and the return section, the push rod performs uniform acceleration motion and constant deceleration motion; the push rod performs uniform acceleration motion with a first acceleration in the pushing section, and the push rod performs uniform acceleration motion with a second acceleration in the return section.

[0023] Both the push stroke section and the return stroke section include a constant acceleration curve section and a constant deceleration curve section, which can make the push rod move smoothly and avoid rigid impact of the push rod.

[0024] The second object of the present invention is to provide a compressor, including a shell, in which a first bracket and a second bracket are arranged, and the first bracket is located above the second bracket; an exhaust structure described in any one of the above items is arranged between the first bracket and the second bracket, and an intake pipe is opened on the top of the shell.

[0025] The top of the compressor is provided with an upper cover, and the upper cover is connected to an air intake pipe. A fixed scroll is provided near the upper cover, and a movable scroll is provided on the side of the fixed scroll away from the upper cover, and the fixed scroll is connected to the movable scroll. A first bracket is provided on the side of the movable scroll away from the fixed scroll. A lower cover is provided at the bottom of the compressor, and a second bracket is provided near the lower cover, and the second bracket is connected to a lower support ring.

[0026] The beneficial effects of the present invention are:

[0027] The present invention provides an exhaust structure, including a balance block and a push rod, wherein the first end of the push rod abuts against the balance block, and the second end of the push rod abuts against an elastic component, and the elastic component is arranged in an exhaust pipe; the balance block has a cam profile, and in the process of the balance block driving the push rod to move, the cam profile forms a periodic motion trajectory to periodically close the exhaust port of the exhaust pipe. The balance block has a cam profile, and the rotation of the balance block will form a periodic motion trajectory, and in the process of the rotation of the balance block, the push rod is driven to perform periodic reciprocating motion in the exhaust pipe. When the balance block rotates within an angle range, the push rod moves inward relative to the exhaust pipe, and the push rod squeezes the elastic component, and at this time the push rod closes the exhaust port of the exhaust pipe. When the balance block rotates to another angle range, the push rod moves outward relative to the exhaust pipe, and the elastic component recovers its deformation, and at this time the push rod opens the exhaust port of the exhaust pipe to discharge the gas in the compressor. For each rotation of the balance block, the exhaust port is partially in a closed state. When the exhaust port is closed, the oil-gas mixture cannot be discharged from the exhaust pipe. Periodically closing the exhaust port can delay the discharge process of the oil-gas mixture, thereby better achieving oil-gas separation, improving the compressor energy efficiency and compressor exhaust efficiency, and preventing the compressor from lacking oil under high-frequency working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a cross-sectional view of a compressor having an exhaust structure of the present invention;

[0029] Figure 2 is a cross-sectional view of the exhaust structure of the present invention;

[0030] Figure 3 is a schematic structural diagram of an exhaust pipe of the present invention;

[0031] Figure 4 It is a schematic structural diagram of a push rod of the present invention;

[0032] Figure 5 It is a structural schematic diagram of the balancing weight of the present invention;

[0033] Figure 6 is a schematic diagram of the motion trajectory of the balancing weight of the present invention;

[0034] Figure 7 is a schematic diagram showing the displacement of the push rod of the present invention changing with angle;

[0035] Figure 8 It is a schematic diagram of the change of the speed of the push rod of the present invention with the angle.

[0036] Figure numerals: 1. balancing block; 2. push rod; 3. elastic component; 4. exhaust pipe; 5. exhaust port; 6. crankshaft; 7. first protrusion; 8. filter assembly; 9. chassis; 10. second protrusion; 11. shell; 12. first bracket; 13. second bracket; 14. intake pipe; 15. upper cover; 16. static scroll; 17. movable scroll; 18. motor; 19. lower support ring; 20. lower cover. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0038] Example 1

[0039] like Figure 1-Figure 2 As shown, this embodiment provides an exhaust structure, including a balancing block 1 and a push rod 2, wherein the first end of the push rod 2 abuts against the balancing block 1, and the second end of the push rod 2 abuts against an elastic component 3, and the elastic component 3 is arranged in an exhaust pipe 4; the balancing block 1 has a cam profile, and in the process of the balancing block 1 driving the push rod 2 to move, the cam profile forms a periodic motion trajectory to periodically close the exhaust port 5 of the exhaust pipe 4.

[0040] The exhaust structure is arranged in the shell of the compressor, and the balancing block 1 is a disc cam and a cylindrical cam with a cam profile. A driving mechanism is also arranged in the shell of the compressor, and the driving mechanism is connected to the balancing block 1. The driving mechanism rotates, driving the balancing block 1 to rotate periodically.

[0041] The push rod 2 is of pointed top push rod 2, roller push rod 2 or flat bottom push rod 2, and the movement forms of the push rod 2 include centrifugal direct motion and eccentric direct motion. In this embodiment, the push rod 2 is a flat bottom push rod 2, and the movement form of the push rod 2 is centrifugal direct motion as an example.

[0042] The driving mechanism drives the balancing block 1 to rotate. When the rotation angle of the balancing block 1 is within an angle range, the push rod 2 moves toward the exhaust pipe 4, compressing the elastic component 3, and the push rod 2 extends into the exhaust pipe 4 to cover the exhaust port 5 on the side wall of the exhaust pipe 4, preventing the oil-gas mixture from entering the exhaust pipe 4 through the exhaust port 5 from the compressor housing. When the rotation angle of the balancing block 1 is within another angle range, the push rod 2 moves toward the outside of the exhaust pipe 4, the elastic component 3 restores its deformation, and the push rod 2 is withdrawn from the exhaust pipe 4 to open the exhaust port 5 on the side wall of the exhaust pipe 4, so that the gas separated from the oil and gas is discharged from the exhaust pipe 4.

[0043] Each rotation of the balancing block 1 corresponds to a cycle, and the exhaust port 5 is closed for part of the time and open for another part of the time in a cycle. By periodically closing the exhaust port 5, the residence time of the oil-gas mixture in the upper cavity of the compressor housing is prolonged, so that the oil-gas separation is more fully performed, and the lubricating oil in the compressor housing is prevented from being brought out, so as to avoid serious wear of the pump body due to lack of oil in the compressor under high-frequency working conditions.

[0044] Figure 2 It is a schematic diagram of the gas flow direction when the exhaust port 5 is opened. At this time, the balance block 1 is in the pushing process, the exhaust port 5 is in the open state, and the gas enters the exhaust pipe 4 through the exhaust port 5 and is discharged from the exhaust pipe 4.

[0045] The exhaust structure provided in this embodiment includes a balancing block 1 and a push rod 2, wherein the first end of the push rod 2 abuts against the balancing block 1, and the second end of the push rod 2 abuts against the elastic component 3, and the elastic component 3 is arranged in the exhaust pipe 4; the balancing block 1 has a cam profile, and in the process of the balancing block 1 driving the push rod 2 to move, the cam profile forms a periodic motion trajectory to periodically close the exhaust port 5 of the exhaust pipe 4. The balancing block 1 has a cam profile, and the rotation of the balancing block 1 will form a periodic motion trajectory, and in the process of the rotation of the balancing block 1, the push rod 2 is driven to perform periodic reciprocating motion in the exhaust pipe 4. When the balancing block 1 rotates within an angle range, the push rod 2 moves inward relative to the exhaust pipe 4, and the push rod 2 squeezes the elastic component 3, and at this time, the push rod 2 closes the exhaust port 5 of the exhaust pipe 4. When the balancing block 1 rotates to another angle range, the push rod 2 moves outward relative to the exhaust pipe 4, and the elastic component 3 recovers its deformation, and at this time, the push rod 2 opens the exhaust port 5 of the exhaust pipe 4 to discharge the gas in the compressor. For every rotation of the balancing block 1, the exhaust port 5 is partially in a closed state. When the exhaust port 5 is closed, the oil-gas mixture cannot be discharged from the exhaust pipe 4. Periodically closing the exhaust port 5 can delay the discharge process of the oil-gas mixture, thereby better realizing oil-gas separation, improving the energy efficiency of the compressor and the exhaust efficiency of the compressor, and preventing the compressor from lacking oil under high-frequency working conditions.

[0046] Example 2

[0047] like Figure 1-Figure 2 As shown, this embodiment provides an exhaust structure, including a balancing block 1 and a push rod 2, wherein the first end of the push rod 2 abuts against the balancing block 1, and the second end of the push rod 2 abuts against an elastic component 3, and the elastic component 3 is arranged in an exhaust pipe 4; the balancing block 1 has a cam profile, and in the process of the balancing block 1 driving the push rod 2 to move, the cam profile forms a periodic motion trajectory to periodically close the exhaust port 5 of the exhaust pipe 4.

[0048] The exhaust structure further includes a crankshaft 6, and the balancing block 1 is connected to the crankshaft 6. When the crankshaft 6 rotates, the balancing block 1 is driven to rotate.

[0049] The exhaust port 5 is located on the side wall of the exhaust pipe 4 ; the push rod 2 is located outside the exhaust port 5 and is arranged close to the exhaust port 5 .

[0050] The compressor housing also includes a motor 18, which is connected to the crankshaft 6. The motor 18 drives the crankshaft 6 to rotate, and the crankshaft 6 drives the balance block 1 to rotate. During the periodic rotation of the balance block 1, the push rod 2 reciprocates in the exhaust pipe 4, that is, when the rotation angle of the balance block 1 is within a certain angle range, the push rod 2 moves into the exhaust pipe 4, squeezing the elastic component 3, and the exhaust port 5 is in a closed state; when the rotation angle of the balance block 1 is within another angle range, the push rod 2 moves out of the exhaust pipe 4, the elastic component 3 recovers its deformation, and the exhaust port 5 is in an open state.

[0051] The balancing weight 1 may be installed on the crankshaft 6, or a connecting structure may be provided on the crankshaft 6 to connect the balancing weight 1 and the crankshaft 6 using the connecting structure, which is not limited here.

[0052] The crankshaft 6 is also connected to a movable scroll 17, which is driven by the crankshaft 6 to make an orbital and translational motion around the fixed scroll 16, thereby realizing a periodic change in the closed volume in the compressor housing and achieving the purpose of compressing the gas. When the compressor is exhausted, due to a certain degree of mutual solubility between the refrigerant and the lubricating oil, the lubricating oil will be discharged from the compressor along with the refrigerant, resulting in a reduction in the lubricating oil of the compressor. At the same time, too much lubricating oil mixed with the refrigerant will cause a decrease in heat exchange efficiency and reduce energy efficiency. Since the balance block 1 has a cam profile, the balance block 1 can drive the push rod 2 to periodically block the exhaust port 5 during the rotation process, so that the exhaust port 5 is in a closed state, prolonging the residence time of the oil-gas mixture in the upper cavity of the compressor housing, thereby more fully performing oil-gas separation.

[0053] The exhaust pipe 4 is L-shaped, the push rod 2 is inserted into the first end of the exhaust pipe 4, and a plurality of exhaust ports 5 are circumferentially arranged on the side wall of the first end of the exhaust pipe 4. The push rod 2 moves inward until it blocks all the exhaust ports 5, and at this time, the gas in the upper cavity of the compressor cannot enter the exhaust ports 5; when the push rod 2 moves outward, opening part or all of the exhaust ports 5, the gas in the upper cavity of the compressor enters the exhaust pipe 4 through the exhaust ports 5, and then is discharged from the exhaust pipe 4.

[0054] The exhaust structure of this embodiment also includes a crankshaft 6, and the balance block 1 is connected to the crankshaft 6. When the crankshaft 6 rotates, the balance block 1 is driven to rotate. The exhaust port 5 is located on the side wall of the exhaust pipe 4; the push rod 2 is located outside the exhaust port 5 and is arranged close to the exhaust port 5. The crankshaft 6 drives the balance block 1 to rotate. When the balance block 1 rotates within an angle range, the push rod 2 blocks all the exhaust ports 5 to prevent the oil-gas mixture from entering the exhaust pipe 4, prolonging the residence time of the oil-gas mixture in the upper half of the compressor cavity, thereby fully separating the oil and gas from the oil-gas mixture; when the balance block 1 rotates to another angle range, the push rod 2 opens part or all of the exhaust port 5, so that the gas after oil-gas separation flows into the exhaust pipe 4 through the exhaust port 5 and is then discharged from the exhaust pipe 4.

[0055] Example 3

[0056] like Figure 1-Figure 2 As shown, this embodiment provides an exhaust structure, including a balancing block 1 and a push rod 2, wherein the first end of the push rod 2 abuts against the balancing block 1, and the second end of the push rod 2 abuts against an elastic component 3, and the elastic component 3 is arranged in an exhaust pipe 4; the balancing block 1 has a cam profile, and in the process of the balancing block 1 driving the push rod 2 to move, the cam profile forms a periodic motion trajectory to periodically close the exhaust port 5 of the exhaust pipe 4.

[0057] A first protrusion 7 is provided on one side of the push rod 2 close to the exhaust pipe 4 . The first protrusion 7 is inserted into the exhaust pipe 4 , and the balancing block 1 drives the first protrusion 7 to move in the exhaust pipe 4 .

[0058] A filter assembly 8 is disposed in the exhaust pipe 4 , the movable end of the elastic component 3 abuts against the first protrusion 7 , and the fixed end of the elastic component 3 is connected to the filter assembly 8 .

[0059] During the movement of the first protrusion 7 of the push rod 2 driven by the balancing block 1, when the rotation angle of the balancing block 1 is within an angle range, the first protrusion 7 moves toward the exhaust pipe 4 to compress the elastic component 3, and at this time, the movable end of the elastic component 3 moves toward the fixed end of the elastic component 3. The balancing block 1 pushes the first protrusion 7 into the exhaust pipe 4 until the first protrusion 7 blocks the exhaust port 5. When the rotation angle of the balancing block 1 is within another angle range, the first protrusion 7 moves toward the outside of the exhaust pipe 4 until the first protrusion 7 opens the exhaust port 5. Using the first protrusion 7 to periodically close the exhaust port 5 can extend the time that the oil-gas mixture stays in the upper cavity of the compressor housing, thereby better achieving oil-gas separation.

[0060] Since the balancing block 1 has a cam profile, when the balancing block 1 rotates within a certain angle range, the balancing block 1 moves outward, and the elastic component 3 compressed by the first protrusion 7 begins to rebound until the elastic component 3 returns to a naturally extended state, during which the exhaust port 5 changes from a closed state to an open state. The gas in the compressor housing can flow from the exhaust port 5 into the exhaust pipe 4, and then be discharged from the compressor after being filtered by the filter assembly 8 in the exhaust pipe 4.

[0061] Preferably, a slide rail is also provided at the first end of the exhaust pipe 4, i.e., the end of the exhaust pipe 4 close to the exhaust port 5. The slide rail is adapted to the first protrusion 7 of the push rod 2. The slide rail is used to guide the first protrusion 7 of the push rod 2 so that the push rod 2 can properly seal the exhaust port 5 while sliding along the slide rail.

[0062] The filter assembly 8 includes a filter base and a filter screen. The elastic component 3 is a spring fixed on the filter base. The filter screen can filter the gas entering the exhaust pipe 4.

[0063] The push rod 2 of this embodiment is provided with a first protrusion 7 on one side close to the exhaust pipe 4. The first protrusion 7 is inserted into the exhaust pipe 4, and the balancing block 1 drives the first protrusion 7 to move in the exhaust pipe 4. A filter assembly 8 is provided in the exhaust pipe 4, and the movable end of the elastic component 3 abuts against the first protrusion 7, and the fixed end of the elastic component 3 is connected to the filter assembly 8. Since the balancing block 1 has a cam profile, when the balancing block 1 rotates to a certain angle range, the balancing block 1 moves outward, and the elastic component 3 compressed by the first protrusion 7 begins to rebound until the elastic component 3 returns to a naturally extended state, and during this process, the exhaust port 5 changes from a closed state to an open state. The gas in the compressor housing can flow into the exhaust pipe 4 from the exhaust port 5, and then be discharged from the compressor after being filtered by the filter assembly 8 in the exhaust pipe 4. The filter assembly 8 includes a filter base and a filter screen, the elastic component 3 is a spring, and the spring is fixed on the filter base, and the filter screen can filter the gas entering the exhaust pipe 4.

[0064] Example 4

[0065] like Figure 1-Figure 2 As shown, this embodiment provides an exhaust structure, including a balancing block 1 and a push rod 2, wherein the first end of the push rod 2 abuts against the balancing block 1, and the second end of the push rod 2 abuts against an elastic component 3, and the elastic component 3 is arranged in an exhaust pipe 4; the balancing block 1 has a cam profile, and in the process of the balancing block 1 driving the push rod 2 to move, the cam profile forms a periodic motion trajectory to periodically close the exhaust port 5 of the exhaust pipe 4.

[0066] The exhaust structure further includes a crankshaft 6, and the balancing block 1 is connected to the crankshaft 6. When the crankshaft 6 rotates, the balancing block 1 is driven to rotate.

[0067] like Figure 3 As shown, the exhaust port 5 is located on the side wall of the exhaust pipe 4 ; the push rod 2 is located outside the exhaust port 5 and is arranged close to the exhaust port 5 .

[0068] like Figure 4 As shown, a first protrusion 7 is provided on a side of the push rod 2 close to the exhaust pipe 4 , and the first protrusion 7 is inserted into the exhaust pipe 4 . The balancing block 1 drives the first protrusion 7 to move in the exhaust pipe 4 .

[0069] like Figure 5As shown, the balancing weight 1 comprises a chassis 9, and a second protrusion 10 is circumferentially arranged on the chassis 9. The second protrusion 10 protrudes upward relative to the chassis 9, so that the balancing weight 1 has a cam profile.

[0070] When the balancing block 1 drives the push rod 2 to move within a certain angle range, the second protrusion 10 is fully in contact with the push rod 2, and the push rod 2 is fully stressed. Driven by the second protrusion 10 of the balancing block 1, the push rod 2 moves at a certain speed in the direction close to the elastic component 3 until the push rod 2 stops moving. At this time, the exhaust port 5 is in a closed state, thereby separating the oil and gas mixture in the compressor casing, reducing the circulation rate of the compressor oil, and improving the utilization efficiency of the compressor oil.

[0071] The push rod 2 of this embodiment is provided with a first protrusion 7 on the side close to the exhaust pipe 4, the first protrusion 7 is inserted into the exhaust pipe 4, and the balancing block 1 drives the first protrusion 7 to move in the exhaust pipe 4. The balancing block 1 includes a chassis 9, and a second protrusion 10 is circumferentially provided on the chassis 9. Driven by the second protrusion 10 of the balancing block 1, the push rod 2 moves at a certain speed in the direction close to the elastic component 3 until the push rod 2 stops moving, at which time the exhaust port 5 is in a closed state, thereby separating the oil and gas mixture in the compressor housing, reducing the circulation rate of the compressor oil, and improving the utilization efficiency of the compressor oil.

[0072] Example 5

[0073] like Figure 1-Figure 2 As shown, this embodiment provides an exhaust structure, including a balancing block 1 and a push rod 2, wherein the first end of the push rod 2 abuts against the balancing block 1, and the second end of the push rod 2 abuts against an elastic component 3, and the elastic component 3 is arranged in an exhaust pipe 4; the balancing block 1 has a cam profile, and in the process of the balancing block 1 driving the push rod 2 to move, the cam profile forms a periodic motion trajectory to periodically close the exhaust port 5 of the exhaust pipe 4.

[0074] The exhaust structure further includes a crankshaft 6, and the balancing block 1 is connected to the crankshaft 6. When the crankshaft 6 rotates, the balancing block 1 is driven to rotate.

[0075] The motion trajectory includes a near rest section, with the near rest section as the starting section, and the push section, the far rest section and the return section in the opposite direction of the rotation direction of the crankshaft 6. The motion trajectory is an irregular shape similar to an ellipse, and the shape of the motion trajectory is fixed. The balance weight 1 is driven by the crankshaft 6 to periodically rotate along the motion trajectory, thereby driving the push rod 2 to periodically reciprocate in the exhaust pipe 4 to periodically close the exhaust port 5 of the exhaust pipe 4.

[0076] like Figure 6As shown, the crankshaft 6 rotates clockwise to Figure 6 Take the first reference line as the starting direction, rotate 90 degrees counterclockwise from the first reference line to reach the second reference line, and the near rest segment corresponds to the angular range between the first reference line and the second reference line; take the second reference line as the starting direction, rotate 110 degrees counterclockwise to reach the third reference line, and the push segment corresponds to the angular range between the second reference line and the third reference line; take the third reference line as the starting direction, rotate 70 degrees counterclockwise to reach the fourth reference line, and the far rest segment corresponds to the angular range between the third reference line and the fourth reference line; take the fourth reference line as the starting direction, rotate 90 degrees counterclockwise to reach the first reference line, and the return segment corresponds to the angular range between the fourth reference line and the first reference line.

[0077] When the balancing weight 1 is in the resting section, the contour of the balancing weight 1 is a circular arc of equal radius, and the push rod 2 does not move when in contact with the circular arc of equal radius, so that the exhaust port 5 can be kept open or closed at this stage. The function of the push section and the return section is to change the opening and closing state of the exhaust port 5.

[0078] The near rest section corresponds to the first central angle, the pushing section corresponds to the second central angle, the far rest section corresponds to the third central angle, and the return section corresponds to the fourth central angle. The sum of the first central angle, the second central angle, the third central angle and the fourth central angle is 360 degrees; the maximum displacement of the push rod 2 is determined by the difference between the arc radii of the far rest section and the near rest section.

[0079] The near rest section, the push section, the far rest section and the return section correspond to an arc respectively, and the sum of the central angles corresponding to the four arcs is 360 degrees. The first central angle is 90 degrees, the second central angle is 110 degrees, the third central angle is 70 degrees, and the fourth central angle is 90 degrees. The four arcs of the cam profile can be changed accordingly according to different needs. It can be designed that the exhaust port 5 is in an open state when the pump body is compressed and exhausted, and the exhaust port 5 is in a closed state when the pump body is not exhausted, so as to facilitate the oil separation of the gas in the compressor housing.

[0080] In the pushing section and the returning section, the push rod 2 performs uniform acceleration motion and constant deceleration motion; the push rod 2 performs uniform acceleration motion with a first acceleration in the pushing section, and the push rod 2 performs uniform acceleration motion with a second acceleration in the returning section.

[0081] Figure 7 is a schematic diagram showing the displacement of the push rod 2 as the angle changes. Figure 8 Schematic diagram of the change of the speed of the push rod 2 with the angle. Figure 7 The horizontal axis is the angle, and the vertical axis is the displacement of the push rod 2. Figure 8 The horizontal axis is the angle, and the vertical axis is the speed of the push rod 2.

[0082] The balancing weight 1 is a disc cam or a cylindrical cam with a cam profile. In this embodiment, the balancing weight 1 is taken as an example of a disc cam. Figure 7-Figure 8 0 to 110 degrees in the figure correspond to the push section, and 180 to 270 degrees correspond to the return section. In the push section, the push rod 2 performs uniform acceleration motion with the first acceleration and uniform deceleration motion with the third acceleration. In the return section, the push rod 2 performs uniform acceleration motion with the second acceleration and uniform deceleration motion with the fourth acceleration. The first acceleration is equal to the third acceleration, that is, Figure 8 The slopes of the rising and falling parts of the mid-thrust section are equal. The second acceleration is equal to the fourth acceleration, that is, Figure 8 The slopes of the rising and falling parts of the mid-return section are equal.

[0083] Both the push section and the return section include an equal acceleration curve section and an equal deceleration curve section, which can make the push rod 2 move smoothly and avoid rigid impact of the push rod 2. The absolute values ​​of the acceleration rate and deceleration rate of the push rod 2 in the push section and the return section are equal. The displacement of the push rod 2 gradually increases in the push section, and the exhaust port 5 is closed after reaching the far rest section. At this time, the push rod 2 is at the maximum displacement, and the push rod 2 squeezes the active end of the elastic component 3. In the return section, the elastic component 3 gradually recovers its deformation until the balance block 1 rotates to the near rest angle. At this time, the elastic component 3 is in a natural elongation state, that is, the deformation of the elastic component 3 is 0, and the push rod 2 returns to its initial state.

[0084] This embodiment also provides a compressor, including a shell, in which a first bracket 12 and a second bracket 13 are arranged, and the first bracket 12 is located above the second bracket 13; an exhaust structure described in any one of embodiments 1 to 4 is arranged between the first bracket 12 and the second bracket 13, and an intake pipe 14 is opened at the top of the shell 11.

[0085] The top of the compressor is provided with an upper cover 15, and the upper cover 15 is connected to an air intake pipe 14. A fixed scroll 16 is provided near the upper cover 15, and a movable scroll 17 is provided on the side of the fixed scroll 16 away from the upper cover 15, and the fixed scroll 16 is connected to the movable scroll 17. A first bracket 12 is provided on the side of the movable scroll 17 away from the fixed scroll 16. A lower cover 20 is provided at the bottom of the compressor, and a second bracket 13 is provided near the lower cover 20, and the second bracket 13 is connected to a lower support ring 19.

[0086] The motion trajectory of this embodiment includes a near rest section, with the near rest section as the starting section, and the push section, the far rest section and the return section in the opposite direction of the rotation direction of the crankshaft 6. In the push section and the return section, the push rod 2 performs uniform acceleration and constant deceleration; the push rod 2 performs uniform acceleration with a first acceleration in the push section, and the push rod 2 performs uniform acceleration with a second acceleration in the return section. The push section and the return section both contain an equal acceleration curve part and an equal deceleration curve part, which can make the push rod 2 move smoothly and avoid rigid impact of the push rod 2. The absolute values ​​of the acceleration rate and deceleration rate of the push rod 2 in the push section and the return section are equal. The displacement of the push rod 2 gradually increases in the push section, and the exhaust port 5 is closed after reaching the far rest section. At this time, the push rod 2 is at the maximum displacement, and the push rod 2 squeezes the active end of the elastic component 3. In the return section, the elastic component 3 gradually recovers its deformation until the balancing block 1 rotates to a near-rest angle, at which time the elastic component 3 is in a naturally stretched state, that is, the deformation of the elastic component 3 is 0, and the push rod 2 returns to its initial state.

[0087] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a restriction. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in the subsequent accompanying drawings.

[0088] It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would then be positioned "below" or "below" the other devices or structures. Thus, the exemplary term "above" can include both "above" and "below". The device may also be oriented in other different ways (rotated 90 degrees or at other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0089] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0090] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A compressor, characterized in that: The exhaust structure includes a balance block and a push rod, wherein a first end of the push rod abuts against the balance block, and a second end of the push rod abuts against an elastic component, and the elastic component is arranged in an exhaust pipe; the balance block has a cam profile, and in the process in which the balance block drives the push rod to move, the cam profile forms a periodic motion trajectory to periodically close the exhaust port of the exhaust pipe; The exhaust port is located on the side wall of the exhaust pipe; the push rod is located outside the exhaust port and is arranged close to the exhaust port; The exhaust structure further includes a crankshaft, the balancing block is connected to the crankshaft, and the balancing block is driven to rotate when the crankshaft rotates; A first protrusion is provided on one side of the push rod close to the exhaust pipe, the first protrusion is inserted into the exhaust pipe, and the balance block drives the first protrusion to move in the exhaust pipe; The compressor further comprises a shell, wherein a first bracket and a second bracket are arranged in the shell, wherein the first bracket is located above the second bracket; the exhaust structure is arranged between the first bracket and the second bracket, and an air intake pipe is arranged on the top of the shell; The housing also includes a motor connected to the crankshaft. The motor drives the crankshaft to rotate, and the crankshaft drives the balancing block to rotate.

2. The compressor according to claim 1, characterized in that The balancing weight comprises a chassis, and a second protrusion is circumferentially arranged on the chassis.

3. The compressor according to claim 1, characterized in that A filter assembly is arranged in the exhaust pipe, the movable end of the elastic component abuts against the first protrusion, and the fixed end of the elastic component is connected to the filter assembly.

4. The compressor according to claim 1, characterized in that The motion trajectory includes a near rest section, with the near rest section as the starting section, and along the direction opposite to the rotation direction of the crankshaft, there are a push section, a far rest section and a return section in sequence.

5. The compressor according to claim 4, characterized in that The near rest segment corresponds to a first central angle, the push segment corresponds to a second central angle, the far rest segment corresponds to a third central angle, and the return segment corresponds to a fourth central angle. The sum of the first central angle, the second central angle, the third central angle and the fourth central angle is 360 degrees; the maximum displacement of the push rod is determined by the difference between the arc radii of the far rest segment and the near rest segment.

6. The compressor according to claim 4, characterized in that In the pushing section and the returning section, the push rod performs uniform acceleration motion and constant deceleration motion; the push rod performs uniform acceleration motion with a first acceleration in the pushing section, and the push rod performs uniform acceleration motion with a second acceleration in the returning section.

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