Compressor and filtering and throttling structure thereof
By setting up an oil plug and filter structure at the oil inlet channel of the compressor, the problem of impurities entering the sliding parts is solved, and the effect of reducing oil output and improving reliability is achieved, and the service life of the compressor is extended.
Patent Information
- Application Number
- CN202422339072.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-25
AI Technical Summary
During the operation of existing compressors, impurities enter the sliding parts with lubricating oil, causing wear, and high exhaust oil content affects system performance and reliability.
The oil plug and a filter are provided at the oil inlet passage of the compressor. The oil plug seals the oil inlet passage and opens through holes. The filter covers the through holes to filter impurities, reduces the oil output rate and prevents impurities from entering the sliding parts.
Effectively reduce the oil output rate of the compressor, prevent impurities from entering the sliding parts, improve reliability, extend service life, and simple and convenient structure.
Smart Images
Figure CN223048967U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of compressors, in particular to a filtering and throttling structure of a compressor and a compressor including the filtering and throttling structure. Background Art
[0002] As the core component of an automotive air conditioner, the performance and reliability of a compressor play a very important role in the overall performance of the air conditioning system. In the operation of existing compressors, mechanical components require lubrication with lubricating oil. The lubricating oil in the oil sump reaches the gaps between bearings and sliding components through various oil passage channels inside the compressor by means of differential pressure oil supply and other methods to achieve the lubrication purpose. However, various impurities (such as iron filings or other solids) inevitably exist in the pipeline of the refrigeration system. These impurities fall into the lubricating oil sump and are supplied to each sliding component along with the lubricating oil, causing abnormal wear of each sliding component (such as pistons, cylinders, crankshafts, valve plates, etc.) and shortening the service life of the compressor.
[0003] In addition, an external oil separator is usually not provided for an automotive air conditioner compressor. When the oil content in the exhaust gas of the compressor is too high, the lubricating oil enters the system, which in turn affects the heat exchange effect of the two heat exchangers, thereby reducing the performance of the system. Moreover, too high an oil content in the exhaust gas is not conducive to oil return and easily affects the reliability of the compressor. Summary of the Utility Model
[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the utility model is to provide a filtering and throttling structure of a compressor, which can reduce the oil output rate of the compressor and prevent impurities from entering the sliding components of the compressor along with the lubricating oil.
[0005] To solve the above technical problems, the utility model adopts the following technical solutions:
[0006] The utility model provides a filtering and throttling structure of a compressor, including an oil inlet passage, an oil plug and a filter screen. The oil inlet passage communicates with the oil sump and leads to the oil passage inside the compressor. The oil plug is arranged in the oil inlet passage and blocks the oil inlet passage. A first through hole communicating with the oil inlet passage is opened on the oil plug. The filter screen is arranged on the oil plug and covers the first through hole.
[0007] Preferably, the oil inlet passage is arranged on any one or more of the intermediate plate, main bearing and auxiliary bearing of the compressor.
[0008] Preferably, the filter screen is welded to the oil plug.
[0009] Preferably, it further includes a fixing piece. The fixing piece is arranged on the oil plug. The filter screen is placed between the fixing piece and the oil plug and is fixed by the fixing piece. A second through hole communicating with the first through hole is opened on the fixing piece.
[0010] Preferably, the fixing piece is in interference fit and / or welded with the oil plug.
[0011] Preferably, the fixing piece is in clearance fit and welded with the oil plug.
[0012] Preferably, the axial projection of the second through hole covers the first through hole.
[0013] Preferably, the oil plug is in interference fit with the oil inlet passage.
[0014] Preferably, the oil plug includes a retaining piece and an anti - detachment piece. The first through hole is formed in the retaining piece. The anti - detachment piece includes a plurality of fins arranged at intervals along the circumferential direction of the retaining piece, and each fin inclines towards the outer peripheral side of the retaining piece.
[0015] The present utility model also provides a compressor, including the filtering and throttling structure of the compressor as described above.
[0016] Compared with the prior art, the present utility model has remarkable progress:
[0017] The filtering and throttling structure of the compressor of the present utility model, by combining the oil plug and the filter screen and arranging them at the oil inlet passage of the compressor, can effectively reduce the oil outlet rate of the compressor and prevent impurities from entering the sliding parts of the compressor along with the lubricating oil, thereby ensuring the reliability of the compressor, effectively reducing the wear of each sliding part of the compressor, prolonging the service life of the compressor, and having the advantages of simple structure, convenient installation and easy operation. Description of the Drawings
[0018] Figure 1 is a schematic cross - sectional view of the filtering and throttling structure of the compressor in the embodiment of the present utility model disposed on the intermediate plate of the compressor.
[0019] Figure 2 is Figure 1 a schematic cross - sectional view of the filtering and throttling structure and the intermediate plate in
[0020] Figure 3 is Figure 2 an enlarged schematic view of part A in
[0021] Figure 4 is a bottom view schematic of the oil plug in the filtering and throttling structure of the compressor in the embodiment of the present utility model.
[0022] Figure 5 is a cross - sectional view schematic of the oil plug in the filtering and throttling structure of the compressor in the embodiment of the present utility model.
[0023] Figure 6 is a schematic diagram of the first assembly method of the filter screen and the oil plug in the filtering and throttling structure of the compressor in the embodiment of the present utility model, wherein, Figure 6 a is a bottom view schematic, Figure 6 b is a cross - sectional view schematic.
[0024] Figure 7 It is a schematic diagram of the second assembly method of the filter screen and the oil plug in the filter throttling structure of the compressor according to the embodiment of the present utility model. Among them, Figure 7 a is a top view schematic diagram, Figure 7 b is a three-dimensional schematic diagram.
[0025] Figure 8 It is a schematic diagram of the third assembly method of the filter screen and the oil plug in the filter throttling structure of the compressor according to the embodiment of the present utility model. Among them, Figure 8 a is a bottom view schematic diagram, Figure 8 b is a sectional view schematic diagram.
[0026] Figure 9 It is a schematic diagram of the fourth assembly method of the filter screen and the oil plug in the filter throttling structure of the compressor according to the embodiment of the present utility model. Among them, Figure 9 a is a bottom view schematic diagram, Figure 9 b is a sectional view schematic diagram.
[0027] Among them, the reference numerals are explained as follows:
[0028] 101 crankshaft
[0029] 102 cylinder
[0030] 103 piston
[0031] 104 intermediate plate
[0032] 105 main bearing
[0033] 106 auxiliary bearing
[0034] 1 oil inlet passage
[0035] 11 oil inlet
[0036] 12 step surface
[0037] 2 oil plug
[0038] 21 first through hole
[0039] 22 retaining piece
[0040] 23 anti-detachment piece
[0041] 3 filter screen
[0042] 4 fixing piece
[0043] 41 second through hole Detailed implementation manners
[0044] The following further elaborates on the specific implementation manners of the present utility model in conjunction with the accompanying drawings. These implementation manners are only used to illustrate the present utility model and are not intended to limit the present utility model.
[0045] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0046] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0047] In addition, in the description of the present utility model, unless otherwise stated, the meaning of "a plurality of" is two or more.
[0048] As Figures 1 to 9 shown, it is an embodiment of the filter throttling structure of the compressor provided by the present utility model.
[0049] Refer to Figure 1 , the conventional compressor structure includes components such as a crankshaft 101, a cylinder 102, a piston 103, an intermediate plate 104, a main bearing 105, and a sub-bearing 106. The eccentric part of the crankshaft 101 penetrates inside the cylinder 102, the piston 103 is sleeved on the eccentric part of the crankshaft 101, and the eccentric part of the crankshaft 101, the cylinder 102, and the piston 103 constitute a compression structure. When the compression structure is a multi-stage compression structure, the adjacent cylinders 102 and pistons 103 are separated from each other by the intermediate plate 104, and both the main bearing 105 and the sub-bearing 106 are sleeved on the crankshaft 101 and are respectively located on both ends of the compression structure. An oil passage is provided inside the compressor for delivering lubricating oil to the sliding components of the compressor, such as the crankshaft 101, the cylinder 102, the piston 103, the main bearing 105, and the sub-bearing 106, etc.
[0050] Refer to Figure 2 and Figure 3, the filtering and throttling structure of the compressor in this embodiment includes an oil inlet passage 1, an oil plug 2, and a filter screen 3.
[0051] Among them, the oil inlet passage 1 is connected to the oil sump and leads to the oil passage inside the compressor. The oil inlet passage 1 is used to suck lubricating oil from the oil sump and deliver the sucked lubricating oil to the oil passage inside the compressor to achieve lubrication. The oil inlet passage 1 can be provided on any one or more of the intermediate plate 104, the main bearing 105, and the auxiliary bearing 106 of the compressor. The oil inlet passage 1 has an oil inlet 11 immersed in the oil sump for sucking the lubricating oil in the oil sump.
[0052] The oil plug 2 is provided in the oil inlet passage 1 and blocks the oil inlet passage 1. A first through hole 21 communicating with the oil inlet passage 1 is provided on the oil plug 2. The diameter of the first through hole 21 is smaller than the diameter of the oil inlet passage 1, which can play a throttling role, reduce the amount of oil delivered from the oil inlet passage 1 to the oil passage inside the compressor, and further reduce the amount of oil finally discharged from the oil passage inside the compressor, that is, reduce the oil content in the exhaust gas of the compressor, that is, reduce the oil output rate of the compressor, and ensure the reliability of the compressor.
[0053] The filter screen 3 is provided on the oil plug 2, and the filter screen 3 covers the first through hole 21. The filter screen 3 plays a role in filtering the lubricating oil. Then, the lubricating oil flowing through the first through hole 21 is filtered by the filter screen 3 to remove impurities and then delivered to the oil passage inside the compressor through the oil inlet passage 1, which can effectively prevent impurities in the lubricating oil from entering the sliding parts of the compressor from the oil inlet passage 1, and has high reliability.
[0054] Thus, the filtering and throttling structure of the compressor in this embodiment, by combining the oil plug 2 and the filter screen 3 and setting them at the oil inlet passage 1 of the compressor, can effectively reduce the oil output rate of the compressor and prevent impurities from entering the sliding parts of the compressor along with the lubricating oil, thereby ensuring the reliability of the compressor, effectively reducing the wear of each sliding part of the compressor, prolonging the service life of the compressor, and having the advantages of simple structure, convenient installation, and easy operation.
[0055] In this embodiment, preferably, the oil plug 2 is provided at one end of the oil inlet passage 1 close to the oil inlet 11 to effectively prevent impurities in the oil sump from entering the inside of the oil inlet passage 1 through the filter screen 3 provided on the oil plug 2.
[0056] In this embodiment, the oil plug 2 is preferably made of a turned metal material or a stamped sheet metal part. The filter screen 3 is preferably formed by bundling stainless steel wires with a wire diameter of 0.02 mm - 0.08 mm, and the mesh diameter of the filter screen 3 is preferably 0.08 mm - 0.18 mm.
[0057] In this embodiment, preferably, the oil plug 2 is in interference fit with the oil inlet passage 1. The oil plug 2 is installed in the oil inlet passage 1 by interference fit, which has the advantages of simple assembly and easy operation.
[0058] Preferably, referring to Figure 4 and Figure 5 , the oil plug 2 includes a retaining piece 22 and an anti-disengagement piece 23. The outer peripheral contour of the retaining piece 22 is adapted to the inner peripheral contour of the oil inlet passage 1, so that the oil inlet passage 1 can be blocked by the retaining piece 22. The first through hole 21 on the oil plug 2 is formed on the retaining piece 22 and penetrates through the retaining piece 22, thereby communicating with the oil inlet passage 1. The anti-disengagement piece 23 extends from the outer edge of the retaining piece 22 along the axial direction of the first through hole 21. The anti-disengagement piece 23 includes a plurality of fins arranged at intervals along the circumferential direction of the retaining piece 22. Each fin inclines towards the outer peripheral side of the retaining piece 22 along the extending direction away from the retaining piece 22, so as to form an interference fit structure with the oil inlet passage 1, and the oil plug 2 can be fixedly embedded in the oil inlet passage 1. To prevent the oil plug 2 from moving in the oil inlet passage 1 along with the flow of the lubricating oil, referring to Figure 3 , a stepped surface 12 facing the oil inlet 11 is formed on the inner peripheral contour of the oil inlet passage 1. The retaining piece 22 of the oil plug 2 abuts against the stepped surface 12, so that the stepped surface 12 can prevent the oil plug 2 from moving towards the inside of the oil inlet passage 1.
[0059] In this embodiment, the filter screen 3 is arranged on the retaining piece 22 of the oil plug 2 and covers the first through hole 21 on the retaining piece 22. The diameter of the first through hole 21 on the oil plug 2 is preferably 0.15 mm - 5 mm. The shape of the filter screen 3 is not limited, and it can be any shape that can cover the first through hole 21 on the oil plug 2. The outer peripheral edge of the filter screen 3 and the inner peripheral contour of the retaining piece 22 can be in clearance fit or interference fit.
[0060] In this embodiment, the assembly method of the filter screen 3 and the oil plug 2 is not limited. Preferably, there are the following various implementation methods.
[0061] Referring to Figure 6 and Figure 7 , in a preferred embodiment, the filter screen 3 is welded to the oil plug 2. Preferably, laser welding is used, which can ensure the stability of the connection between the filter screen 3 and the oil plug 2 and prevent the filter screen 3 from moving or falling off on the oil plug 2. As Figure 6 shown, the filter screen 3 is welded to the side surface of the retaining piece 22 of the oil plug 2 facing the oil inlet 11 of the oil inlet passage 1; or, as Figure 7 shown, the filter screen 3 is welded to the side surface of the retaining piece 22 of the oil plug 2 facing away from the oil inlet 11 of the oil inlet passage 1.
[0062] Referring to Figure 8 and Figure 9, in another preferred embodiment, a fixing piece 4 is provided to fix the filter screen 3 and the oil plug 2, that is, the filtering throttle structure further includes a fixing piece 4. The fixing piece 4 is arranged on the oil plug 2. The filter screen 3 is placed between the fixing piece 4 and the oil plug 2 and is fixed by the fixing piece 4. A second through hole 41 communicating with the first through hole 21 is formed in the fixing piece 4 to ensure smooth oil flow. Fixing the filter screen 3 and the oil plug 2 by the fixing piece 4 has the advantage of simpler operation, and can also ensure the stability of the connection between the filter screen 3 and the oil plug 2, avoiding the filter screen 3 from moving or falling off on the oil plug 2. Preferably, both the fixing piece 4 and the filter screen 3 are arranged on one side of the retaining piece 22 of the oil plug 2 facing the oil inlet 11 of the oil inlet passage 1. The fixing piece 4 is welded to the oil plug 2, preferably by laser welding. The fixing piece 4 is welded on one side of the retaining piece 22 of the oil plug 2 facing the oil inlet 11 of the oil inlet passage 1, and the filter screen 3 placed between the fixing piece 4 and the retaining piece 22 is pressed and fixed; or, as Figure 8 shown, the fixing piece 4 is in interference fit with the oil plug 2. The outer peripheral edge of the fixing piece 4 and the inner peripheral contour of the retaining piece 22 are in interference fit and fixed to each other, and the filter screen 3 placed between the fixing piece 4 and the retaining piece 22 is pressed and fixed; or, the fixing piece 4 is in interference fit with the oil plug 2 and welded for reinforcement; or, as Figure 9 shown, the fixing piece 4 is in clearance fit and welded with the oil plug 2, preferably by laser welding. The outer peripheral edge of the fixing piece 4 and the inner peripheral contour of the retaining piece 22 are in clearance fit, and the fixing piece 4 is welded on one side of the retaining piece 22 of the oil plug 2 facing the oil inlet 11 of the oil inlet passage 1, and the filter screen 3 placed between the fixing piece 4 and the retaining piece 22 is pressed and fixed.
[0063] Preferably, the axial projection of the second through hole 41 covers the first through hole 21 to ensure the throttling effect of the oil plug 2. The second through hole 41 is coaxially arranged with the first through hole 21, and the diameter of the second through hole 41 is larger than that of the first through hole 21, which has the best effect.
[0064] The fixing piece 4 is preferably a flat gasket or a spring gasket. The fixing piece 4 is preferably made of stainless steel. The diameter of the second through hole 41 on the fixing piece 4 is preferably 0.1 mm - 5.1 mm, and the thickness of the fixing piece 4 is preferably 0.3 mm - 0.5 mm.
[0065] Based on the above filtering throttle structure of the compressor, the embodiment of the present invention further provides a compressor. The compressor of this embodiment includes the filtering throttle structure of the compressor in the above embodiment of the present invention.
[0066] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.
Claims
1. A filter throttling structure for a compressor, characterized in that: The invention comprises an oil inlet passage (1), an oil plug (2) and a filter (3); the oil inlet passage (1) is connected to an oil pool and leads to an oil passage inside a compressor; the oil plug (2) is arranged in the oil inlet passage (1) and blocks the oil inlet passage (1); the oil plug (2) is provided with a first through hole (21) connected to the oil inlet passage (1); and the filter (3) is arranged on the oil plug (2) and covers the first through hole (21).
2. The filter throttling structure of the compressor according to claim 1, characterized in that: The oil inlet passage (1) is arranged on any one or more of the intermediate plate (104), the main bearing (105) and the auxiliary bearing (106) of the compressor.
3. The filter throttling structure of the compressor according to claim 1, characterized in that: The filter screen (3) is welded to the oil plug (2).
4. The filter throttling structure of the compressor according to claim 1, characterized in that: The invention also comprises a fixing plate (4), wherein the fixing plate (4) is arranged on the oil plug (2), the filter screen (3) is placed between the fixing plate (4) and the oil plug (2) and is fixed by the fixing plate (4), and the fixing plate (4) is provided with a second through hole (41) which is connected to the first through hole (21).
5. The filter throttling structure of the compressor according to claim 4, characterized in that: The fixing plate (4) and the oil plug (2) are interference fit and / or welded.
6. The filter throttling structure of the compressor according to claim 4, characterized in that: The fixing plate (4) and the oil plug (2) are clearance-matched and welded.
7. The filter throttling structure of the compressor according to claim 4, characterized in that: An axial projection of the second through hole (41) covers the first through hole (21).
8. The filter throttling structure of the compressor according to claim 1, characterized in that: The oil plug (2) is interference fit with the oil inlet channel (1).
9. The filter throttling structure of the compressor according to claim 1, characterized in that: The oil plug (2) comprises a baffle (22) and an anti-slip sheet (23), the first through hole (21) is formed on the baffle (22), the anti-slip sheet (23) comprises a plurality of fins arranged at intervals along the circumference of the baffle (22), and each fin is inclined toward the outer circumference of the baffle (22).
10. A compressor, characterized in that: A filter throttling structure for a compressor comprising the filter throttling structure as claimed in any one of claims 1 to 9.