compressor

Abstract

The present invention provides a compressor. The compressor comprises: a casing having a housing, an air intake, and an air exhaust, both of which are connected to the housing; a crankshaft located within the housing; an eccentric structure having a mounting hole and a first liquid passage, one end of the crankshaft extending through the mounting hole, the liquid outlet of the fixed scroll being connected to the mounting hole via the first liquid passage, and the first liquid passage being connected to the housing; a first preset gap is defined between the surface of the eccentric structure facing the orbiting scroll and the orbiting scroll, and the mounting hole is connected to the first preset gap. The present invention effectively solves the problem of insufficient lubrication between the eccentric structure and the crankshaft in scroll compressors of the prior art.

Description

Technical Field

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

[0002] At present, scroll compressors have significant advantages such as high efficiency, low vibration and noise, smooth operation, and good reliability, which makes scroll compressors have a broader development space than other types of compressors.

[0003] However, during the operation of the scroll compressor, insufficient lubrication between the eccentric structure and the crankshaft causes severe wear of the scroll compressor, increased power consumption, and generates large noise and vibration, which affects the service life of the scroll compressor. Summary of the Invention

[0004] The main purpose of the present invention is to provide a compressor to solve the problem of insufficient lubrication between the eccentric structure and the crankshaft of the scroll compressor in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a compressor, including: a casing, having an accommodating chamber, an air intake portion and an exhaust portion, both of which are connected to the accommodating chamber; a crankshaft, located in the accommodating chamber; an eccentric structure, the eccentric structure having a mounting hole and a first liquid passage, one end of the crankshaft is passed through the mounting hole, the liquid outlet hole of the fixed scroll plate is connected to the mounting hole through the first liquid passage, and the first liquid passage is connected to the accommodating chamber; wherein, a first preset gap is provided between the surface of the eccentric structure facing the movable scroll plate and the movable scroll plate, and the mounting hole is connected to the first preset gap.

[0006] Furthermore, the crankshaft includes a crankshaft body section and an eccentric shaft section, the eccentric shaft section is arranged on the end of the crankshaft body section, and the central axis of the eccentric shaft section is arranged parallel to the central axis of the crankshaft body section. The compressor also includes a first bearing structure; the eccentric structure includes: a sleeve portion, the first bearing structure is sleeved outside the sleeve portion and connected to the movable scroll plate, and the mounting hole is arranged on the sleeve portion; the eccentric portion, the eccentric portion is arranged on the outer peripheral surface of the sleeve portion.

[0007] Furthermore, the first liquid passage includes: a first through hole, the first end of the first through hole extends to the outer peripheral surface of the eccentric part, and the second end of the first through hole extends to the mounting hole; a second through hole, the two ends of the second through hole respectively extend to two oppositely arranged surfaces of the eccentric part; wherein the first through hole is connected to the second through hole.

[0008] Furthermore, the first through hole is a circular hole, and an inner diameter D1 of the first through hole satisfies the following relationship: 3 mm ≤ D1 ≤ 15 mm.

[0009] Furthermore, the compressor also includes: a bracket, the crankshaft is passed through the bracket, a mounting cavity is formed between the bracket and the movable scroll plate, and the eccentric structure is located in the mounting cavity; the bracket has a second liquid passage, and a second preset gap is provided between the eccentric structure and the cavity wall of the mounting cavity, the second preset gap is connected to the liquid outlet through the second liquid passage, and the second preset gap is connected to the second end of the first liquid passage.

[0010] Furthermore, the second liquid passage is a liquid trough, a first end of the liquid trough is communicated with the liquid outlet, and a second end of the liquid trough extends into the installation cavity.

[0011] Furthermore, the mounting hole includes: an axial hole; and a third through hole connected to the axial hole, wherein an extending direction of the third through hole is consistent with an extending direction of the axial hole.

[0012] Further, there is one third through hole; or, there are multiple third through holes, and the multiple third through holes are arranged at intervals along the circumference of the shaft hole.

[0013] Furthermore, the radius R1 of the third through hole satisfies the following relationship: 1 mm ≤ R1 ≤ 5 mm.

[0014] Furthermore, the second through hole is a circular hole, and a diameter D2 of the second through hole satisfies the following relationship: 2 mm ≤ D2 ≤ 10 mm.

[0015] Furthermore, the compressor also includes: a second bearing structure, the second bearing structure is arranged in the installation cavity and sleeved outside the crankshaft, a third preset gap is provided between the eccentric structure and the second bearing structure, and the third preset gap is connected to the first liquid passage.

[0016] Furthermore, the eccentric portion is fan-shaped, and a central angle A of the eccentric portion satisfies the following relationship: 30°≤A≤180°.

[0017] By applying the technical solution of the present invention, a portion of the lubricating medium discharged from the liquid outlet of the fixed scroll plate enters the accommodating chamber through the first liquid passage to lubricate the components located in the accommodating chamber, while another portion of the lubricating medium enters the mounting hole to lubricate the connection between the crankshaft and the eccentric structure. In this way, the above arrangement realizes a dual lubrication oil circuit within the compressor, thereby solving the problem of insufficient lubrication between the eccentric structure and the crankshaft of the scroll compressor in the prior art, improving the operating reliability of the compressor, reducing the vibration and noise generated during the operation of the compressor, and extending the service life of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 shows a cross-sectional view of an embodiment of a compressor according to the present invention;

[0020] Figure 2 Shown Figure 1 An enlarged schematic diagram of point B of the compressor in FIG; and

[0021] Figure 3 Shown Figure 1 Front view of the eccentric structure of the compressor.

[0022] The above drawings include the following reference numerals:

[0023] 10. Casing; 11. Air inlet; 12. Exhaust; 13. Intake chamber; 20. Crankshaft; 21. Crankshaft body; 22. Eccentric shaft section; 30. Eccentric structure; 31. Mounting hole; 311. Shaft hole; 312. Third through hole; 32. First liquid passage; 321. First through hole; 322. Second through hole; 33. First preset gap; 34. Sleeve; 35. Eccentric portion; 36. Second preset gap; 37. Third preset gap; 40. Stationary scroll; 41. Liquid outlet; 50. Orbital scroll; 60. First bearing structure; 70. Bracket; 71. Mounting chamber; 72. Second liquid passage; 80. Second bearing structure; 90. Oil separator; 100. Machine cover; 110. Motor. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0026] In the present invention, unless otherwise specified, directional words such as "up" and "down" are generally used with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" are generally used with respect to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0027] In order to solve the problem of insufficient lubrication between the eccentric structure and the crankshaft of the scroll compressor in the prior art, the present application provides a compressor.

[0028] like Figures 1 to 3As shown, the compressor includes a casing 10, a crankshaft 20 and an eccentric structure 30. The casing 10 has a accommodating chamber, an air inlet 11 and an exhaust 12, and the air inlet 11 and the exhaust 12 are both connected to the accommodating chamber. The crankshaft 20 is located in the accommodating chamber. The eccentric structure 30 has a mounting hole 31 and a first liquid passage 32. One end of the crankshaft 20 is inserted into the mounting hole 31, and the liquid outlet 41 of the fixed scroll 40 is connected to the mounting hole 31 through the first liquid passage 32, and the first liquid passage 32 is connected to the accommodating chamber. Among them, a first preset gap 33 is formed between the surface of the eccentric structure 30 facing the movable scroll 50 and the movable scroll 50, and the mounting hole 31 is connected to the first preset gap 33.

[0029] By applying the technical solution of the present invention, a portion of the lubricating medium discharged from the liquid outlet 41 of the fixed scroll 40 enters the accommodating chamber through the first liquid passage 32 to lubricate the components located in the accommodating chamber, while another portion of the lubricating medium enters the mounting hole 31 to lubricate the connection between the crankshaft 20 and the eccentric structure 30. Thus, the above arrangement realizes a dual lubrication oil circuit within the compressor, thereby resolving the problem of insufficient lubrication between the eccentric structure and the crankshaft of scroll compressors in the prior art, improving the operational reliability of the compressor, reducing vibration and noise generated during operation, and extending the service life of the compressor.

[0030] like Figure 1 As shown, the crankshaft 20 includes a crankshaft body section 21 and an eccentric shaft section 22. The eccentric shaft section 22 is arranged on the end of the crankshaft body section 21. The central axis of the eccentric shaft section 22 is arranged parallel to the central axis of the crankshaft body section 21. The compressor also includes a first bearing structure 60. The eccentric structure 30 includes a sleeve portion 34 and an eccentric portion 35. Among them, the first bearing structure 60 is sleeved outside the sleeve portion 34 and connected to the movable scroll 50. The mounting hole 31 is provided on the sleeve portion 34. The eccentric portion 35 is provided on the outer peripheral surface of the sleeve portion 34. In this way, during the rotation of the crankshaft 20, the eccentric shaft section 22 drives the eccentric structure 30 to rotate, so as to drive the movable scroll 50 to move relative to the fixed scroll 40 through the eccentric structure 30, thereby realizing the suction, compression and exhaust actions of the compressor.

[0031] Specifically, the first bearing structure 60 is used to support the eccentric structure 30 , thereby improving the movement stability of the eccentric structure 30 .

[0032] like Figure 2As shown, the first liquid passage 32 includes a first through hole 321 and a second through hole 322. The first end of the first through hole 321 extends to the outer peripheral surface of the eccentric portion 35, and the second end of the first through hole 321 extends to the mounting hole 31. The two ends of the second through hole 322 extend to two oppositely arranged surfaces of the eccentric portion 35, respectively. The first through hole 321 is connected to the second through hole 322. In this way, the above arrangement ensures that the lubricating medium can enter the suction chamber 13 through the second through hole 322 to lubricate the components located in the suction chamber 13; on the other hand, it ensures that the lubricating medium can enter the mounting hole 31 through the first through hole 321 to lubricate the connection between the crankshaft 20 and the eccentric structure 30, thereby reducing the friction loss of the compressor.

[0033] Specifically, the lubricating medium discharged from the liquid outlet 41 first enters the first through hole 321, a portion of the lubricating medium entering the first through hole 321 enters the second through hole 322, and enters the suction chamber 13 through the second through hole 322, and another portion of the lubricating medium entering the first through hole 321 enters the mounting hole 31, so as to ensure that the lubricating medium can flow smoothly in the first liquid channel 32.

[0034] Optionally, the first through hole 321 is a circular hole, and the inner diameter D1 of the first through hole 321 satisfies the following relationship: 3 mm ≤ D1 ≤ 15 mm. This arrangement enhances the structural strength of the eccentric structure 30 while ensuring that the lubricating medium can flow within the first through hole 321, thereby extending the service life of the compressor. Furthermore, this arrangement simplifies the structure of the eccentric structure 30, making it easier to manufacture and implement, thereby reducing the manufacturing cost of the compressor.

[0035] In this embodiment, the inner diameter D1 of the first through hole 321 is 4 mm. It should be noted that the value of the inner diameter D1 of the first through hole 321 is not limited to this and can be adjusted according to working conditions. Optionally, the inner diameter D1 of the first through hole 321 is 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, or 14 mm.

[0036] like Figure 1 and Figure 2As shown, the compressor also includes a bracket 70. The crankshaft 20 is inserted into the bracket 70, and a mounting cavity 71 is formed between the bracket 70 and the movable scroll 50. The eccentric structure 30 is located in the mounting cavity 71. The bracket 70 has a second liquid passage 72, and a second preset gap 36 is formed between the eccentric structure 30 and the cavity wall of the mounting cavity 71. The second preset gap 36 is connected to the liquid outlet 41 through the second liquid passage 72, and the second preset gap 36 is connected to the second end of the first liquid passage 32. In this way, the bracket 70 can support the crankshaft 20 to ensure that the crankshaft 20 can rotate around its own central axis. At the same time, the above arrangement ensures that the lubricating medium discharged from the liquid outlet 41 can enter the first liquid passage 32, thereby improving the lubrication reliability of the lubricating medium on the compressor.

[0037] In this embodiment, the second liquid passage 72 is a liquid passage groove, a first end of which is connected to the liquid outlet 41, and a second end of which extends into the mounting cavity 71. This arrangement simplifies the structure of the second liquid passage 72, making it easier to manufacture and implement, thereby reducing the manufacturing cost of the second liquid passage 72.

[0038] like Figure 3 As shown, the mounting hole 31 includes an axial hole 311 and a third through hole 312. The third through hole 312 communicates with the axial hole 311, and the extending direction of the third through hole 312 is the same as that of the axial hole 311. Thus, the crankshaft 20 is inserted into the axial hole 311, and lubricating medium can enter the third through hole 312 to lubricate the connection between the crankshaft 20 and the eccentric structure 30.

[0039] Alternatively, there is one third through hole 312; or, there are multiple third through holes 312, which are spaced apart along the circumference of the shaft hole 311. This configuration allows for more flexible selection of the third through holes 312 to meet different usage requirements and working conditions, reducing the difficulty of processing for the operator.

[0040] In this embodiment, there are four third through holes 312 , which are spaced apart along the circumference of the shaft hole 311 , and the angle between two third through holes 312 of the bell is 90°.

[0041] It should be noted that the number of the third through holes 312 is not limited thereto and can be adjusted according to working conditions. Optionally, the number of the third through holes 312 is two, three, five, six, or more.

[0042] Optionally, the radius R1 of the third through hole 312 satisfies the following relationship: 1 mm ≤ R1 ≤ 5 mm. This arrangement enhances the structural strength of the eccentric structure 30 while ensuring the lubricating medium can flow within the third through hole 312, thereby extending the service life of the compressor. Furthermore, this arrangement simplifies the structure of the eccentric structure 30, making it easier to manufacture and implement, thereby reducing the manufacturing cost of the compressor.

[0043] In this embodiment, the radius R1 of the third through hole 312 is 2 mm. It should be noted that the value of the radius R1 of the third through hole 312 is not limited to this and can be adjusted according to working conditions. Optionally, the radius R1 of the third through hole 312 is 1 mm, 3 mm, 4 mm, 4.5 mm, or 5 mm.

[0044] Optionally, the second through hole 322 is a circular hole, and the diameter D2 of the second through hole 322 satisfies the following relationship: 2 mm ≤ D2 ≤ 10 mm. This arrangement enhances the structural strength of the eccentric structure 30 while ensuring that the lubricating medium can flow through the second through hole 322, thereby extending the service life of the compressor. Furthermore, this arrangement simplifies the structure of the eccentric structure 30, making it easier to manufacture and implement, thereby reducing the manufacturing cost of the compressor.

[0045] In this embodiment, the diameter D2 of the second through hole 322 is 3 mm. It should be noted that the value of the diameter D2 of the second through hole 322 is not limited to this and can be adjusted according to working conditions. Optionally, the diameter D2 of the second through hole 322 is 2.5 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, or 10 mm.

[0046] like Figure 1 and Figure 2 As shown, the compressor also includes a second bearing structure 80. The second bearing structure 80 is disposed within the mounting cavity 71 and sleeved onto the crankshaft 20. A third preset gap 37 is defined between the eccentric structure 30 and the second bearing structure 80, and the third preset gap 37 communicates with the first liquid passage 32. Thus, the second bearing structure 80 supports the crankshaft 20, ensuring that the crankshaft 20 can rotate about its central axis. Furthermore, this arrangement ensures that the lubricating medium discharged from the liquid outlet 41 can pass through the third preset gap 37 and enter the first liquid passage 32, thereby improving the reliability of the lubricating medium in lubricating the compressor.

[0047] Optionally, the eccentric portion 35 is fan-shaped, and a central angle A of the eccentric portion 35 satisfies the following relationship: 30°≤A≤180°.

[0048] like Figure 1As shown, the compressor further includes a cover 100 and a motor 110. The cover 100 is connected to the casing 10, and the motor 110 is disposed in the casing 10 and is drivingly connected to the crankshaft 20.

[0049] Specifically, during operation of the compressor, the oil-gas mixture enters the suction chamber 13 through the intake port 11, then enters the compression chamber through the intake chamber 13, and finally is discharged from the exhaust port 12. The oil and gas are separated by the oil separator 90, and the gas enters the air conditioning system through the exhaust port 12. Due to gravity, the refrigerant oil accumulates in the lower part of the exhaust chamber. Due to the high and low pressure difference, a portion of the refrigerant oil enters the suction chamber 13 through the liquid outlet 41 of the fixed scroll 40, forming a first lubricating oil circuit within the compressor, which is used to lubricate the internal components of the compressor and extend the service life of the compressor. Another portion of the refrigerant oil enters the second liquid passage 72 through the liquid outlet 41 of the fixed scroll 40, and then enters the first liquid passage 32 through the second liquid passage 72, and then enters the mounting hole 31 through the first liquid passage 32, forming a second lubricating oil circuit within the compressor, which is used to lubricate the connection between the crankshaft 20 and the eccentric structure 30, and the first bearing structure 60.

[0050] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0051] A portion of the lubricating medium discharged from the liquid outlet of the fixed scroll plate enters the accommodating chamber through the first liquid passage to lubricate the components located in the accommodating chamber, while another portion of the lubricating medium enters the mounting hole to lubricate the connection between the crankshaft and the eccentric structure. In this way, the above arrangement realizes a dual lubrication oil circuit within the compressor, thereby resolving the problem of insufficient lubrication between the eccentric structure and the crankshaft of the scroll compressor in the prior art, improving the operational reliability of the compressor, reducing vibration and noise generated during operation, and extending the service life of the compressor.

[0052] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0053] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0054] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0055] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A compressor, characterized in that: include: A housing (10) having a receiving chamber, an air intake portion (11) and an air exhaust portion (12), wherein the air intake portion (11) and the air exhaust portion (12) are both in communication with the receiving chamber; A crankshaft (20) is located in the accommodating cavity; an eccentric structure (30), the eccentric structure (30) having a mounting hole (31) and a first liquid passage (32), one end of the crankshaft (20) being inserted into the mounting hole (31), a liquid outlet hole (41) of the fixed scroll (40) being in communication with the mounting hole (31) via the first liquid passage (32), and the first liquid passage (32) being in communication with the accommodating cavity; There is a first preset gap (33) between the surface of the eccentric structure (30) facing the movable scroll (50) and the movable scroll (50), and the mounting hole (31) is in communication with the first preset gap (33); The compressor further includes a first bearing structure (60); The eccentric structure (30) comprises: a sleeve portion (34), the first bearing structure (60) being sleeved outside the sleeve portion (34) and connected to the movable scroll (50), and the mounting hole (31) being provided on the sleeve portion (34); an eccentric portion (35), the eccentric portion (35) being arranged on the outer peripheral surface of the sleeve portion (34); The first liquid passage (32) comprises: a first through hole (321), wherein a first end of the first through hole (321) extends to the outer peripheral surface of the eccentric portion (35), and a second end of the first through hole (321) extends to the mounting hole (31); A second through hole (322), with both ends of the second through hole (322) respectively extending to two oppositely arranged surfaces of the eccentric portion (35); wherein the first through hole (321) is in communication with the second through hole (322).

2. The compressor according to claim 1, characterized in that The crankshaft (20) comprises a crankshaft body section (21) and an eccentric shaft section (22), wherein the eccentric shaft section (22) is arranged on the end of the crankshaft body section (21), and the central axis of the eccentric shaft section (22) is arranged parallel to the central axis of the crankshaft body section (21).

3. The compressor according to claim 1, characterized in that The first through hole (321) is a circular hole, and the inner diameter D1 of the first through hole (321) satisfies the following relationship: 3mm≤D1≤15mm.

4. The compressor according to claim 1, characterized in that The compressor further comprises: A bracket (70), the crankshaft (20) is passed through the bracket (70), a mounting cavity (71) is formed between the bracket (70) and the movable scroll (50), and the eccentric structure (30) is located in the mounting cavity (71); the bracket (70) has a second liquid passage (72), a second preset gap (36) is provided between the eccentric structure (30) and the cavity wall of the mounting cavity (71), the second preset gap (36) is communicated with the liquid outlet (41) through the second liquid passage (72), and the second preset gap (36) is communicated with the second end of the first liquid passage (32).

5. The compressor according to claim 4, characterized in that The second liquid passage (72) is a liquid trough, a first end of the liquid trough is in communication with the liquid outlet (41), and a second end of the liquid trough extends into the installation cavity (71).

6. The compressor according to claim 1, characterized in that The mounting hole (31) comprises: Axis hole (311); The third through hole (312) is in communication with the shaft hole (311), and the extension direction of the third through hole (312) is consistent with the extension direction of the shaft hole (311).

7. The compressor according to claim 6, characterized in that There is one third through hole (312); or there are multiple third through holes (312), and the multiple third through holes (312) are arranged at intervals along the circumference of the shaft hole (311).

8. The compressor according to claim 6, characterized in that The radius R1 of the third through hole (312) satisfies the following relationship: 1 mm ≤ R1 ≤ 5 mm.

9. The compressor according to claim 1, characterized in that The second through hole (322) is a circular hole, and the diameter D2 of the second through hole (322) satisfies the following relationship: 2mm≤D2≤10mm.

10. The compressor according to claim 4, characterized in that The compressor further comprises: A second bearing structure (80) is provided in the mounting cavity (71) and sleeved on the outside of the crankshaft (20); a third preset gap (37) is provided between the eccentric structure (30) and the second bearing structure (80); and the third preset gap (37) is communicated with the first liquid passage (32).

11. The compressor according to claim 2, characterized in that The eccentric portion (35) is fan-shaped, and a central angle A of the eccentric portion (35) satisfies the following relationship: 30°≤A≤180°.

Images