CN115977958A - Oil return assembly and compressor - Google Patents
Oil return assembly and compressor Download PDFInfo
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- CN115977958A CN115977958A CN202310015156.6A CN202310015156A CN115977958A CN 115977958 A CN115977958 A CN 115977958A CN 202310015156 A CN202310015156 A CN 202310015156A CN 115977958 A CN115977958 A CN 115977958A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The invention provides an oil return assembly and a compressor, wherein the oil return assembly comprises: the oil return pipe is provided with an inlet end and an outlet end, the inlet end is used for being communicated with an oil return channel of the compressor, the pipe sleeve is sleeved on the oil return pipe, the outlet end is located in the pipe sleeve, an oil outlet is formed in the pipe sleeve, lubricating oil can be conveyed to an oil pool of the compressor through the oil outlet, an oil conveying channel is formed between the inner wall of the pipe sleeve and the outlet end, and the pipe sleeve can move in the axial direction of the oil return pipe according to the liquid level height of the oil pool so as to increase or reduce the cross section area of the oil conveying channel.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to an oil return assembly and a compressor.
Background
Lubricating oil sucked up by a crankshaft of the scroll compressor through an oil pump is divided into two parts in an oil pool of a high-pressure cavity, one part of the lubricating oil enters the end face of a pump body to be lubricated so as to ensure the normal operation of the compressor, and the other part of the lubricating oil returns to the oil pool at the bottom of the compressor through an oil return device, namely an oil return pipe, so as to perform circular operation after the lubrication of a bearing is completed.
The diameter of traditional scroll compressor oil return pipe export is fixed, influenced by compressor actual operation, because the diameter of oil return pipe export is fixed, if the diameter of oil return pipe export returns oil volume when high frequency operation is accurate, this oil volume that returns when just leading to compressor low frequency operation is too big, thereby lead actuation, the oily problem of quiet vortex dish lack of oil, if the diameter of oil return pipe export is accurate with the low frequency or take low frequency and high frequency intermediate value, oil volume is not enough when then high frequency, but the oil increase that the oil pump was inhaled, then unnecessary oil will be discharged from the pump body with the gas form, thereby influence the oil circulation rate of compressor, and then cause compressor performance to descend.
The compressor in the prior art has the technical problems that the diameter of an outlet of an oil return pipe is fixed, the oil outlet quantity cannot be adjusted according to the running frequency of the compressor, the performance of the compressor is reduced, and the like, so that the oil return assembly and the compressor are researched and designed.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects that the compressor in the prior art has the defects that the oil return pipe outlet is fixed in diameter, the oil outlet amount cannot be adjusted according to the running frequency of the compressor, and the performance of the compressor is reduced, so that the oil return assembly and the compressor are provided.
In order to solve the above problems, the present invention provides an oil return assembly, including:
the oil return pipe is provided with an inlet end and an outlet end, the inlet end is used for being communicated with an oil return channel of the compressor, the pipe sleeve is sleeved on the oil return pipe, the outlet end is located in the pipe sleeve, an oil outlet is formed in the pipe sleeve, lubricating oil can be conveyed to an oil pool of the compressor through the oil outlet, an oil conveying channel is formed between the inner wall of the pipe sleeve and the outlet end, and the pipe sleeve can move axially along the oil return pipe according to the liquid level height of the oil pool, so that the cross section area of the oil conveying channel is increased or reduced.
In some embodiments, the outlet end is provided with a first oil outlet member, the first oil outlet member is provided with a through hole, the through hole is communicated with the oil return pipe, the inner wall of the pipe sleeve is provided with a protrusion, the protrusion is opposite to the through hole, and the oil delivery channel is located between the protrusion and the inner wall of the through hole.
In some embodiments, the longitudinal section of the first oil outlet member and the protrusion is a trapezoid, the short side of the trapezoid faces the oil return pipe, and an included angle a is formed between the long side and the oblique side of the trapezoid, and is 55 ° < a <85 °.
In some embodiments, the oil outlet is arranged on the outer peripheral wall of the pipe sleeve, the protrusion is arranged on the inner bottom surface of the pipe sleeve, the maximum outer diameter of the first oil outlet is the same as the inner diameter of the pipe sleeve, and the maximum outer diameter of the protrusion is not smaller than the maximum inner diameter of the through hole.
In some embodiments, the oil return assembly further includes a fixing plate, the fixing plate is sleeved on the oil return pipe and can move along the axial direction of the oil return pipe, the fixing plate is connected with the pipe sleeve, and the inner diameter of the fixing plate is smaller than the outer diameter of the outlet end.
In some embodiments, the oil return assembly further includes a fixing plate, the fixing plate is sleeved on the oil return pipe, the fixing plate can move along an axial direction of the oil return pipe, the fixing plate is connected to the pipe sleeve, and an inner diameter of the fixing plate is smaller than an outer diameter of the outlet end.
In some embodiments, the longitudinal section of the second oil outlet member and the groove is a trapezoid, the long side of the trapezoid faces the oil return pipe, and an included angle β is formed between the long side of the trapezoid and the oblique side, and is 50 ° < β <80 °.
In some embodiments, the oil outlet is located at the bottom of the groove, the maximum outer diameter of the second oil outlet is the same as the inner diameter of the pipe sleeve, and the maximum outer diameter of the second oil outlet is larger than the maximum inner diameter of the groove.
In some embodiments, the outlet end is provided with a fixing member, the second oil outlet member is connected to the fixing member, and when the oil return assembly further includes a fixing plate, an outer diameter of the fixing member is larger than an inner diameter of the fixing plate.
The invention also provides a compressor comprising the oil return assembly of any one of the preceding claims.
The oil return assembly and the compressor provided by the invention have the following beneficial effects:
when the compressor operates at low frequency, the pump body pumps less oil, the liquid level of the bottom oil pool is higher, when the compressor operates at high frequency, the pump body pumps more oil, the liquid level of the bottom oil pool begins to drop, the liquid level of the bottom oil pool is lower, the oil return pipe is provided with an inlet end and an outlet end, the inlet end is used for being communicated with an oil return channel of the compressor, when lubricating oil passes through a lubricating part of the compressor, the lubricating oil flows into the oil return pipe through the oil return channel, the pipe sleeve is sleeved on the oil return pipe, the outlet end is positioned in the pipe sleeve, the pipe sleeve is provided with an oil outlet, the lubricating oil in the oil return pipe can be conveyed to the oil pool of the compressor through the oil outlet, so that the lubricating oil in the compressor forms a loop, an oil conveying channel is formed between the inner wall of the pipe sleeve and the outlet end, and the pipe sleeve can move along the axial direction of the oil return pipe according to the liquid level height of the oil pool, so that the cross section area of the oil conveying channel is increased or reduced, when the compressor operates at low frequency, the liquid level of the oil in the oil pool is higher, the pipe sleeve displaces under the action of the buoyancy of the oil, so that the cross section area of the oil conveying channel is reduced, the oil outlet quantity of the oil outlet of the pipe sleeve is reduced, the lubricating effect of a lubricating part is ensured, when the compressor operates at high frequency, the liquid level of the oil in the oil pool is lower, the gravity of the pipe sleeve is greater than the buoyancy received by the pipe sleeve, the pipe sleeve moves under the action of the gravity, the cross section area of the oil conveying channel is increased, the oil outlet quantity of the oil outlet of the pipe sleeve is increased, the oil circulation rate of the compressor is ensured, the oil return quantity of an oil return pipe at each rotating speed of the compressor is adjusted, the problem that the oil circulation is overlarge due to insufficient oil return quantity during high frequency operation is solved, or the problem that the oil return quantity during low frequency operation is excessive to cause the oil shortage of a pump body is solved, the stable lubrication of the compressor is realized, and the performance and the reliability of the compressor are improved to a certain extent, the matching of the compressor and the system is greatly improved, and the performance of the compressor is improved.
Drawings
FIG. 1 is an assembly view of an oil return assembly according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is an enlarged view of portion A of FIG. 2 during low frequency operation of the compressor;
FIG. 4 is an enlarged view of portion A of FIG. 2 when the compressor is operating at high frequency;
FIG. 5 is a schematic structural diagram of an oil return assembly according to an embodiment of the present invention;
FIG. 6 is an exploded view of an oil return assembly according to an embodiment of the present invention;
fig. 7 is a perspective view of a fixing plate in the oil return assembly according to the embodiment of the invention;
FIG. 8 is a cross-sectional view of a stationary plate in an oil return assembly according to an embodiment of the present invention;
FIG. 9 is a perspective view of a sleeve in an oil return assembly according to an embodiment of the present disclosure;
FIG. 10 is a cross-sectional view of a sleeve in an oil return assembly according to an embodiment of the present invention;
FIG. 11 is a cross-sectional view of a return tube in an oil return assembly according to an embodiment of the present invention;
FIG. 12 is a schematic structural diagram of an oil return assembly according to another embodiment of the present invention;
FIG. 13 is an exploded view of an oil return assembly according to another embodiment of the present invention;
fig. 14 is a perspective view of a second oil outlet member in the oil return assembly according to another embodiment of the present invention;
fig. 15 is a cross-sectional view of a second oil outlet member in the oil return assembly according to another embodiment of the present invention;
fig. 16 is a schematic structural diagram of a pipe sleeve in an oil return assembly according to another embodiment of the invention.
The reference numerals are represented as:
1. a crankshaft; 2. a motor; 3. a second bracket; 4. a pump body; 5. pipe sleeve; 6. a fixing plate; 7. an oil return pipe; 71. a first oil outlet member; 72. a second oil outlet member; 73. a fixing member; 8. a first bracket; 9. a movable scroll; 10. a fixed scroll; 11. a housing.
Detailed Description
Referring to fig. 1 to 16 in combination, according to an embodiment of the present invention, there is provided an oil return assembly including: the oil return pipe 7 is provided with an inlet end and an outlet end, the inlet end is used for being communicated with an oil return channel of the compressor, the oil return pipe 7 is sleeved with the pipe sleeve 5, the outlet end is located in the pipe sleeve 5, an oil outlet is formed in the pipe sleeve 5, lubricating oil can be conveyed to an oil pool of the compressor through the oil outlet, an oil conveying channel is formed between the inner wall of the pipe sleeve 5 and the outlet end, and the pipe sleeve 5 can move axially along the oil return pipe 7 according to the liquid level height of the oil pool, so that the cross sectional area of the oil conveying channel is increased or reduced. In the technical scheme, when the compressor runs at a low frequency, the pump body 4 pumps a small amount of oil, the liquid level of the bottom oil pool is high, when the compressor runs at a high frequency, the pump body 4 pumps a large amount of oil, the liquid level of the bottom oil pool begins to drop, the liquid level of the bottom oil pool is low, the oil return pipe 7 is provided with an inlet end and an outlet end, the inlet end is communicated with an oil return channel of the compressor, when lubricating oil passes through a lubricating part of the compressor, the lubricating oil flows into the oil return pipe 7 through the oil return channel, the pipe sleeve 5 is sleeved on the oil return pipe 7, the outlet end is positioned in the pipe sleeve 5, the pipe sleeve 5 is provided with an oil outlet, the lubricating oil in the oil return pipe 7 can be conveyed to an oil pool of the compressor through the oil outlet, so that the lubricating oil in the compressor forms a loop, an oil conveying channel is formed between the inner wall of the pipe sleeve 5 and the outlet end, and the pipe sleeve 5 can move along the axial direction of the oil return pipe 7 according to the liquid level of the oil pool, so as to increase or decrease the cross-sectional area of the oil delivery passage, as shown in fig. 3 and 4, when the compressor operates at low frequency, the liquid level of the oil in the oil pool is higher, the pipe sleeve 5 displaces under the action of buoyancy of the oil, so that the cross-sectional area of the oil delivery passage is decreased, the oil output of the oil outlet of the pipe sleeve 5 is decreased, thereby ensuring the lubricating effect of the lubricating part, when the compressor operates at high frequency, the liquid level of the oil in the oil pool is lower, the gravity of the pipe sleeve 5 is greater than the buoyancy received by the pipe sleeve 5, the pipe sleeve 5 moves under the action of the gravity, the cross-sectional area of the oil delivery passage is increased, the oil output of the oil outlet of the pipe sleeve 5 is increased, thereby ensuring the oil circulation rate of the compressor, adjusting the oil return amount of the oil return pipe 7 at each rotating speed of the compressor, and avoiding the problem of overlarge oil circulation caused by insufficient oil return amount when the compressor operates at high frequency or the problem of oil shortage caused by excessive oil return when the compressor operates at low frequency, the compressor is stably lubricated, the performance and the reliability of the compressor are improved to a certain extent, the matching of the compressor and a system is greatly improved, and the performance of the compressor is improved. When the oil return assembly of the present invention is applied to a compressor, as shown in fig. 1 and 2, the compressor includes a crankshaft 1, a motor 2, a second bracket 3, a pump body 4, a first bracket 8, a movable scroll 9, a fixed scroll 10, and a casing 11, and the structure of the compressor is the same as that of the compressor in the prior art, the crankshaft 1, the motor 2, the second bracket 3, the pump body 4, the first bracket 8, the movable scroll 9, and the fixed scroll 10 are all located in the casing 11, the pump body 4 pumps lubricating oil in an oil sump to a lubricated part, and after lubrication, the lubricating oil returns to the first bracket 8, and the first bracket 8 is provided with an oil return channel through which the lubricating oil returns to the oil sump, thereby forming an oil circulation.
In some embodiments, referring to fig. 6, the outlet end is provided with a first oil outlet member 71, the first oil outlet member 71 is provided with a through hole, the through hole is communicated with the oil return pipe 7, the inner wall of the pipe sleeve 5 is provided with a protrusion, the protrusion is opposite to the through hole, and the oil delivery channel is located between the protrusion and the inner wall of the through hole. Specifically, referring to fig. 10 and 11 in combination, the longitudinal section of the first oil outlet member 71 and the protrusion is trapezoidal, the short side of the trapezoid faces the oil return pipe 7, and an included angle a is formed between the long side and the oblique side of the trapezoid, which satisfies that 55 ° < a <85 °.
In the technical scheme, the through hole is matched with the bulge, when the compressor runs at a low frequency, the liquid level of oil in the oil pool is higher, the pipe sleeve 5 displaces under the action of buoyancy of the oil, the bulge is close to the inner wall of the through hole, the cross section area of the oil conveying channel is reduced, the oil outlet amount of an oil outlet of the pipe sleeve 5 is reduced, when the compressor runs at a high frequency, the liquid level of the oil in the oil pool is lower, the gravity of the pipe sleeve 5 is larger than the buoyancy received by the pipe sleeve 5, the pipe sleeve 5 moves under the action of the gravity, the bulge and the inner wall of the through hole are relatively and gradually far away, the cross section area of the oil conveying channel is increased, and the oil outlet amount of the oil outlet of the pipe sleeve 5 is also increased. The longitudinal section of the first oil outlet part 71 and the longitudinal section of the protrusion are trapezoidal, preferably isosceles trapezoidal, the cross section area of the oil conveying channel can be conveniently adjusted by utilizing the characteristics of the trapezoidal shape, and when oil in the oil return pipe 7 flows to the oil conveying channel through the first oil outlet part 71, the protrusion can also play a role in guiding the flow of the lubricating oil from the oil outlet.
In some embodiments, referring to fig. 9, the oil outlet is disposed on the outer peripheral wall of the pipe sleeve 5, the protrusion is disposed on the inner bottom surface of the pipe sleeve 5, the maximum outer diameter of the first oil outlet member 71 is the same as the inner diameter of the pipe sleeve 5, and the maximum outer diameter of the protrusion is not smaller than the maximum inner diameter of the through hole. According to the technical scheme, the oil outlet is formed in the outer peripheral wall of the pipe sleeve 5, the protrusion is formed in the inner bottom surface of the pipe sleeve 5, when lubricating oil in the oil conveying channel flows to the oil outlet through the protrusion, the lubricating oil flows into an oil pool along the outer peripheral wall of the pipe sleeve 5, disturbance caused by oil return of the oil return pipe 7 impacting the oil level of the oil pool at the bottom is avoided, the maximum outer diameter of the first oil outlet member 71 is the same as the inner diameter of the pipe sleeve 5, when the pipe sleeve 5 moves, a guiding effect can be formed between the first oil outlet member 71 and the inner wall of the pipe sleeve 5, axial movement of the pipe sleeve 5 along the oil return pipe 7 is guaranteed, preferably, a guiding surface can be arranged on the outer peripheral wall of the first oil outlet member 71, after the outer peripheral wall of the first oil outlet member 71 is abraded, movement of the pipe sleeve 5 is not stable, for example, a portion, close to a long side of the outer peripheral wall of the trapezoid, of the first oil outlet member 71 is arranged to be a plane, the plane and the plane is matched with the inner peripheral wall of the pipe sleeve 5, the maximum outer diameter of the protrusion is not smaller than the maximum inner diameter of the through hole, and matching between the protrusion and the through hole is guaranteed, preferably, the oil outlet is at least 2. The bottom of the first oil outlet member 71 is in a conical structure, and the included angle is 55 degrees < a <85 degrees; a conical boss is arranged in the pipe sleeve 5, the included angle of the conical boss corresponds to the included angle of the first oil outlet piece 71, a through hole is formed in the side wall of the pipe sleeve 5, the pipe sleeve 5 can float on the oil liquid level, and the pipe sleeve 5 is arranged on the oil return pipe and can move axially along the oil return pipe 7; a groove structure is arranged in the fixed plate 6, the fixed plate 6 is fixed on the pipe sleeve 5, and the fixed plate 6 can axially move along the oil return pipe 7; the pump oil amount of the pump body 4 is in relation with the running frequency of the compressor, the pump oil amount can be increased along with the increase of the frequency of the compressor, and then the pump oil amount enters a gentle trend; when the compressor operates at a low frequency, the pump body 4 has a small amount of oil, the oil level of the oil pool at the bottom is high, the pipe sleeve 5 floats on the oil level, the gap between the conical boss on the pipe sleeve 5 and the conical groove on the first oil outlet piece 71 is small, the oil return amount is reduced, and the lubricating oil entering the pump body is guaranteed. When the compressor operates at high frequency, the oil pumping quantity of the pump body 4 is increased, the oil level of the bottom oil pool begins to decline, at the moment, the pipe sleeve 5 moves downwards along the axial direction of the oil return pipe 7, the gap between the conical boss on the adjusting pipe sleeve 5 and the conical groove on the first oil outlet piece 71 is gradually increased, the oil return quantity is increased, the lubricating oil entering the pump body is controlled, the oil circulation is controlled, and the performance of the compressor is improved.
In some embodiments, referring to fig. 7 and 8 in combination, the oil return assembly further includes a fixing plate 6, the fixing plate 6 is sleeved on the oil return pipe 7, the fixing plate 6 can move along an axial direction of the oil return pipe 7, the fixing plate 6 is connected to the pipe sleeve 5, and an inner diameter of the fixing plate 6 is smaller than an outer diameter of the outlet end. In the technical scheme, the fixing plate 6 is sleeved on the oil return pipe 7, the fixing plate 6 can move along the axial direction of the oil return pipe 7, the fixing plate 6 is connected with the pipe sleeve 5, the inner diameter of the fixing plate 6 is smaller than the outer diameter of the outlet end, the pipe sleeve 5 is prevented from falling off from the oil return pipe 7, the oil return pipe sleeve moves axially on the oil return pipe all the time, the fixing plate 6 is preferably provided with a mounting groove, the end part of the pipe sleeve 5 is mounted in the mounting groove, and maintenance and disassembly are facilitated.
In some embodiments, referring to fig. 12 to 16, the outlet end is provided with a second oil outlet member 72, an oil transmission hole is formed in an outer peripheral wall of the second oil outlet member 72, the oil transmission hole is communicated with the oil return pipe 7, a groove is formed in the pipe sleeve 5, the groove is opposite to the second oil outlet member 72, and the oil transmission passage is located between an inner wall of the groove and an outer peripheral wall of the second oil outlet member 72. Specifically, the second oil outlet member 72 and the longitudinal section of the groove are trapezoidal, the long side of the trapezoid faces the oil return pipe 7, and an included angle β is formed between the long side of the trapezoid and the oblique side, which satisfies that β is 50 ° <80 °. In the technical scheme, the second oil outlet piece 72 is matched with the groove, when the compressor runs at low frequency, the liquid level of oil in the oil pool is high, the pipe sleeve 5 displaces under the buoyancy action of the oil, the outer peripheral wall of the second oil outlet piece 72 is close to the inner wall of the groove, the cross section area of an oil conveying channel is reduced, the oil outlet amount of an oil outlet of the pipe sleeve 5 is reduced, when the compressor runs at high frequency, the liquid level of the oil in the oil pool is low, the gravity of the pipe sleeve 5 is greater than the buoyancy received by the pipe sleeve 5, the pipe sleeve 5 moves under the gravity action, the outer peripheral wall of the second oil outlet piece 72 is gradually far away from the inner wall of the groove relatively, the cross section area of the oil conveying channel is increased, and the oil outlet amount of an oil outlet of the pipe sleeve 5 is increased accordingly.
The second oil outlet piece 72 and the longitudinal section of the groove are trapezoidal, preferably isosceles trapezoidal, the cross section area of the oil conveying channel is convenient to adjust by utilizing the characteristics of the trapezoids, in the movement of the pipe sleeve 5, the side wall of the second oil outlet piece 72 is matched with the side wall of the groove, the cross section area of the oil conveying channel is convenient to adjust, the control gradient is accurate, the installation is simple, the structure is reliable, and the feasibility is strong. The bottom of the oil return pipe 7 is provided with a boss, namely the second oil outlet piece 72, the pipe sleeve 5 is of a conical structure, the included angle of the pipe sleeve 5 is 50 degrees < beta <80 degrees, the side wall of the pipe sleeve 5 is provided with a through hole, and the pipe sleeve 5 is arranged on the oil return pipe 7; the pipe sleeve 5 is provided with a groove hollow structure, and the included angle beta of the groove hollow structure corresponds to the included angle of the second oil outlet piece 72;
when the compressor operates at a low frequency, the pump oil amount of the pump body 4 is small, the oil level of the oil pool at the bottom is high, the pipe sleeve 5 floats on the oil level, the gap between the conical groove of the pipe sleeve 5 and the conical boss on the oil return pipe 7 is small, the oil return amount is reduced, and the lubricating oil entering the pump body is guaranteed. When the compressor operates at a high frequency, the oil pumping amount of the pump body 4 is increased, the oil level of the bottom oil pool begins to decline, at the moment, the pipe sleeve 5 moves downwards along the axial direction of the oil return pipe 7, the gap between the conical groove of the pipe sleeve 5 and the conical boss on the oil return pipe 7 is gradually increased, the oil return amount is increased, the lubricating oil entering the pump body 4 is controlled, the oil circulation is controlled, and the performance of the compressor is improved.
In some embodiments, the oil outlet is located at the bottom of the groove, the maximum outer diameter of the second oil outlet 72 is the same as the inner diameter of the pipe sleeve 5, and the maximum outer diameter of the second oil outlet 72 is larger than the maximum inner diameter of the groove. Specifically, the outlet end is provided with a fixing member 73, the second oil outlet member 72 is connected to the fixing member 73, and when the oil return assembly further includes the fixing plate 6, the outer diameter of the fixing member 73 is greater than the inner diameter of the fixing plate 6. In the technical scheme, the oil outlet is located at the bottom of the groove, when the lubricating oil flows out of the second oil outlet piece 72, the impact force of the lubricating oil is greatly reduced under the guiding effect of the inner wall of the groove, the lubricating oil slowly flows into the oil pool from the oil outlet, disturbance caused by the fact that the oil return of the oil return pipe 7 impacts the oil level of the oil pool at the bottom is avoided, the maximum outer diameter of the second oil outlet piece 72 is the same as the inner diameter of the pipe sleeve 5, and the maximum outer diameter of the second oil outlet piece 72 is larger than the maximum inner diameter of the groove. When the pipe sleeve 5 moves, a guiding function can be formed between the first oil outlet piece 71 and the inner wall of the pipe sleeve 5, so that the pipe sleeve 5 is ensured to move along the axial direction of the oil return pipe 7, the outer diameter of the fixing piece 73 is larger than the inner diameter of the fixing plate 6, the pipe sleeve 5 is prevented from falling off from the oil return pipe 7, the oil return pipe sleeve is enabled to move on the oil return pipe in the axial direction all the time, and the stability of an oil return assembly is improved.
The invention also provides a compressor comprising the oil return assembly of any one of the preceding claims.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. An oil return assembly, its characterized in that: the method comprises the following steps: the oil return pipe (7) is provided with an inlet end and an outlet end, the inlet end is communicated with an oil return channel of the compressor, the pipe sleeve (5) is sleeved on the oil return pipe (7), the outlet end is located in the pipe sleeve (5), an oil outlet is formed in the pipe sleeve (5), lubricating oil can be conveyed to an oil pool of the compressor through the oil outlet, an oil conveying channel is formed between the inner wall of the pipe sleeve (5) and the outlet end, and the pipe sleeve (5) can move axially along the oil return pipe (7) according to the liquid level height of the oil pool so that the cross sectional area of the oil conveying channel is increased or reduced.
2. The oil return assembly of claim 1, wherein: the oil pipe is characterized in that a first oil outlet piece (71) is arranged at the outlet end, a through hole is formed in the first oil outlet piece (71), the through hole is communicated with the oil return pipe (7), a protrusion is arranged on the inner wall of the pipe sleeve (5), the protrusion is opposite to the through hole, and the oil conveying channel is located between the protrusion and the inner wall of the through hole.
3. The oil return assembly of claim 2, wherein: the first oil outlet piece (71) and the longitudinal section of the protrusion are trapezoidal, the short side of the trapezoid faces the oil return pipe (7), an included angle a is formed between the long side of the trapezoid and the inclined side, and the included angle a is 55 degrees < a <85 degrees.
4. The oil return assembly of claim 2, wherein: the oil outlet is formed in the outer peripheral wall of the pipe sleeve (5), the protrusion is formed in the inner bottom surface of the pipe sleeve (5), the maximum outer diameter of the first oil outlet piece (71) is the same as the inner diameter of the pipe sleeve (5), and the maximum outer diameter of the protrusion is not smaller than the maximum inner diameter of the through hole.
5. The oil return assembly of claim 1, wherein: the oil return assembly further comprises a fixing plate (6), the fixing plate (6) is sleeved on the oil return pipe (7), the fixing plate (6) can move axially along the oil return pipe (7), the fixing plate (6) is connected with the pipe sleeve (5), and the inner diameter of the fixing plate (6) is smaller than the outer diameter of the outlet end.
6. The oil return assembly of claim 1, wherein: the oil pipe is characterized in that a second oil outlet piece (72) is arranged at the outlet end, an oil conveying hole is formed in the peripheral wall of the second oil outlet piece (72), the oil conveying hole is communicated with the oil return pipe (7), a groove is formed in the pipe sleeve (5), the groove is opposite to the second oil outlet piece (72), and the oil conveying channel is located between the inner wall of the groove and the peripheral wall of the second oil outlet piece (72).
7. The oil return assembly of claim 6, wherein: the second oil outlet piece (72) and the longitudinal section of the groove are trapezoidal, the long side of the trapezoid faces the oil return pipe (7), and an included angle beta is formed between the long side of the trapezoid and the inclined side, and the included angle beta is 50 degrees < beta <80 degrees.
8. The oil return assembly of claim 6, wherein: the oil outlet is located at the bottom of the groove, the maximum outer diameter of the second oil outlet piece (72) is the same as the inner diameter of the pipe sleeve (5), and the maximum outer diameter of the second oil outlet piece (72) is larger than the maximum inner diameter of the groove.
9. The oil return assembly of claim 6, wherein: the outlet end is provided with a fixing piece (73), the second oil outlet piece (72) is connected with the fixing piece (73), and when the oil return assembly further comprises a fixing plate (6), the outer diameter of the fixing piece (73) is larger than the inner diameter of the fixing plate (6).
10. A compressor, characterized by: comprising an oil return assembly according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310015156.6A CN115977958A (en) | 2023-01-04 | 2023-01-04 | Oil return assembly and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310015156.6A CN115977958A (en) | 2023-01-04 | 2023-01-04 | Oil return assembly and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115977958A true CN115977958A (en) | 2023-04-18 |
Family
ID=85959486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310015156.6A Pending CN115977958A (en) | 2023-01-04 | 2023-01-04 | Oil return assembly and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115977958A (en) |
-
2023
- 2023-01-04 CN CN202310015156.6A patent/CN115977958A/en active Pending
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