Compressor

Abstract

The invention relates to the technical field of compressors, in particular to a compressor. Wherein the two ends of the cylinder cover are connected with the silencer and the air cylinder correspondingly, the skirt edge portion of the silencer is provided with a plurality of first through-flow structures penetrating in the axial direction, the air cylinder is provided with a plurality of second through-flow structures penetrating in the axial direction, the first through-flow structures and the second through-flow structures are arranged in a staggered mode in the axial direction, and the oil pool is arranged below the air cylinder. And the lubricating oil can be baffled to the oil pool through the first through-flow structure and the second through-flow structure. Compared with the prior art, the first through-flow structures and the second through-flow structures are arranged in the circumferential direction in a staggered mode, the backflow path of lubricating oil can be increased, the lubricating oil is prevented from vertically falling into an oil pool, the impact force of backflow of the lubricating oil is reduced, smooth backflow of the lubricating oil can be achieved, and it is guaranteed that the oil level is stable; meanwhile, the weight of the compressor can be reduced through the first through-flow structure and the second through-flow structure, the silencer is directly utilized, an oil stabilizing structure does not need to be additionally installed, and the weight of the compressor is further reduced.

Description

Technical Field

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

[0002] During the operation of the compressor, the motor assembly drives the crankshaft to rotate and compresses the gas through the pump assembly. At present, the oil pool and the upper cavity of vertical rotor compressors are mostly connected vertically and directly, and some use a barrier cover to separate the oil pool and the exhaust cavity. The vertical connection method makes the oil pool more impacted by the exhaust oil return from the compressor, which is prone to oil level instability and affects the reliability of the compressor. In addition to increasing the assembly process, installing a barrier cover will also affect the oil return problem, and cannot ensure that the lubricating oil will quickly return to the oil pool after separation from the refrigerant, and at the same time increase the weight of the compressor.

[0003] Therefore, a compressor is urgently needed to solve the above-mentioned technical problems. Summary of the invention

[0004] The purpose of the present invention is to provide a compressor which can ensure that lubricating oil can smoothly return to the oil pool and at the same time stabilize the oil level, thereby improving the reliability of the compressor.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A compressor comprises: an outer shell, a muffler and a pump body fixed on the inner wall of the outer shell, the pump body comprises a cylinder head and a cylinder, the two ends of the cylinder head are respectively connected to the muffler and the cylinder, the muffler comprises a muffler cavity and a skirt portion connected to the outer periphery of the muffler cavity, the skirt portion is provided with a plurality of first flow structures penetrating along the axial direction, the cylinder is provided with a plurality of second flow structures penetrating along the axial direction, the plurality of the first flow structures and the plurality of the second flow structures are staggered along the axial direction, an oil pool is provided below the cylinder, and lubricating oil can be diverted to the oil pool through the first flow structure and the second flow structure.

[0007] As a preferred technical solution of the above compressor, a plurality of the first flow-through structures and a plurality of the second flow-through structures are arranged axially at intervals to form a buffer zone between the plurality of the first flow-through structures and the plurality of the second flow-through structures.

[0008] As a preferred technical solution of the above-mentioned compressor, the cylinder includes a cylinder body and an extension portion connected to the outer periphery of the cylinder body, the extension portion is fixedly connected to the inner wall of the outer shell, and a plurality of the second flow-through structures are arranged on the extension portion.

[0009] As a preferred technical solution of the above-mentioned compressor, the outer diameter of the cylinder head is smaller than the outer diameter of the cylinder, and the second flow-through structure is exposed at the outer periphery of the cylinder head.

[0010] As a preferred technical solution of the above-mentioned compressor, the first flow-through structure includes a first through hole and / or a notch, and the notch is recessed along the outer peripheral edge of the skirt portion toward the axial direction of the muffler.

[0011] As a preferred technical solution of the above-mentioned compressor, a weight-reducing notch is provided at the outer extension of the cylinder, and the first through hole is provided at the skirt of the muffler, and the first through hole and the weight-reducing notch are arranged alternately.

[0012] As a preferred technical solution for the above-mentioned compressor, the axial flow area of ​​the first flow structure is S1, the axial flow area of ​​the second flow structure is S2, the total number of the first flow structures is n, the length from the edge of the cylinder head to the edge of the cylinder is L, and the height from the first flow structure to the second flow structure is H, wherein S1, S2, n, L and H satisfy: when S1<S2, H≥0.75×S1 / (2n×L), when S1>S2, H≥0.75×S2 / (2n×L).

[0013] As a preferred technical solution of the above compressor, the cylinder is provided with a vane groove, and at least one of the first flow-through structures is axially connected to the vane groove.

[0014] As a preferred technical solution of the above-mentioned compressor, the muffler is also provided with a plurality of mounting holes, and one end of the bolt can pass through the mounting hole to be connected to the cylinder head.

[0015] As a preferred technical solution for the above-mentioned compressor, the outer diameter of the muffler is smaller than the inner diameter of the outer shell, and there is a gap between the edge of the muffler and the inner wall of the outer shell, and the lubricating oil can flow back to the oil pool through the gap.

[0016] Beneficial effects of the present invention:

[0017] The present invention provides a compressor. The compressor includes: a shell, a muffler and a pump body fixed on the inner wall of the shell, the pump body includes a cylinder head and a cylinder, the two ends of the cylinder head are respectively connected to the muffler and the cylinder, the muffler includes a muffler cavity and a skirt portion connected to the outer periphery of the muffler cavity, the skirt portion is provided with a plurality of first flow structures penetrating along the axial direction, the cylinder is provided with a plurality of second flow structures penetrating along the axial direction, the plurality of first flow structures and the plurality of second flow structures are staggered along the axial direction, an oil pool is provided below the cylinder, and the lubricating oil can be diverted to the oil pool through the first flow structure and the second flow structure. Compared with the prior art, the plurality of first flow structures and the plurality of second flow structures are staggered along the circumferential direction, which can increase the reflux path of the lubricating oil, prevent the lubricating oil from falling vertically into the oil pool, reduce the impact force of the reflux of the lubricating oil, and can implement the smooth reflux of the lubricating oil and ensure the stability of the oil level; at the same time, the first flow structure and the second flow structure can reduce the weight of the compressor, and the muffler is directly used without the need to install an additional oil stabilizing structure, which further reduces the weight of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0019] Figure 1 A schematic diagram of the structure of a compressor provided in an embodiment of the present invention Figure 1 ;

[0020] Figure 2 A schematic diagram of the structure of a muffler provided in an embodiment of the present invention Figure 1 ;

[0021] Figure 3 A schematic diagram of the structure of a muffler provided in an embodiment of the present invention Figure 2 ;

[0022] Figure 4 The structure of the cylinder provided in the embodiment of the present invention is schematically shown Figure 1 ;

[0023] Figure 5 The structure of the cylinder provided in the embodiment of the present invention is schematically shown Figure 2 ;

[0024] Figure 6 A schematic structural diagram of a combination of a first flow-through structure and a second flow-through structure provided in an embodiment of the present invention.

[0025] In the figure:

[0026] 1. Muffler; 11. Muffler cavity; 12. Skirt; 13. First through hole; 14. Notch; 15. Mounting hole; 2. Cylinder head; 3. Cylinder; 31. Cylinder body; 32. Extension; 33. Weight reduction notch; 34. Sliding vane groove; 35. Second through hole. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0031] like Figures 1 to 6As shown, the present invention provides a compressor. The compressor comprises: a shell, a muffler 1 and a pump body fixed on the inner wall of the shell, the pump body comprises a cylinder head 2 and a cylinder 3, the two ends of the cylinder head 2 are respectively connected to the muffler 1 and the cylinder 3, the muffler 1 comprises a muffler cavity 11 and a skirt portion 12 connected to the outer periphery of the muffler cavity 11, the skirt portion 12 is provided with a plurality of first flow structures penetrating along the axial direction, the cylinder 3 is provided with a plurality of second flow structures penetrating along the axial direction, the plurality of first flow structures and the plurality of second flow structures are staggered along the axial direction, the oil pool is provided below the cylinder 3, and the lubricating oil can be diverted to the oil pool through the first flow structure and the second flow structure. Compared with the prior art, a plurality of first flow-through structures and a plurality of second flow-through structures are staggeredly arranged along the circumferential direction, which can increase the return path of the lubricating oil, prevent the lubricating oil from falling vertically into the oil pool, reduce the impact force of the lubricating oil reflux, and enable the lubricating oil to return smoothly and ensure the oil level is stable; at the same time, the first flow-through structure and the second flow-through structure can reduce the weight of the compressor, and the muffler 1 is directly used without the need to install an additional oil stabilizing structure, thereby further reducing the weight of the compressor.

[0032] Optionally, the plurality of first flow-through structures and the plurality of second flow-through structures are arranged at intervals along the axial direction, so that a buffer zone is formed between the plurality of first flow-through structures and the plurality of second flow-through structures, so as to reduce the impact force of the lubricating oil and ensure the stability of the oil surface.

[0033] Optionally, the cylinder 3 includes a cylinder body 31 and an extension portion 32 connected to the outer periphery of the cylinder body 31, the extension portion 32 is fixedly connected to the inner wall of the outer shell, and a plurality of second flow structures are arranged on the extension portion 32, so that the extension portion 32 can receive the refluxed lubricating oil, so that the lubricating oil reduces the impact force through the extension portion 32, and then flows back through the plurality of second flow structures.

[0034] Optionally, the outer diameter of the cylinder head 2 is smaller than the outer diameter of the cylinder 3 , and the second flow-through structure is exposed at the outer periphery of the cylinder head 2 to prevent the cylinder head 2 from interfering with the backflow of the lubricating oil.

[0035] Optionally, the first flow structure includes a first through hole 13 and / or a notch 14, and the notch 14 is recessed along the outer periphery of the skirt portion 12 toward the axial direction of the muffler 1. Specifically, a plurality of notches 14 are provided at the edge of the skirt portion 12, and a plurality of first through holes 13 are provided at the skirt portion 12. The lubricating oil can flow back to the oil pool through the first through holes 13, the notches 14 and the second flow structure, thereby increasing the reflux speed of the lubricating oil and reducing the weight of the muffler 1.

[0036] Furthermore, the outer extension 32 of the cylinder 3 is provided with a weight-reducing notch 33 , and the skirt portion 12 of the muffler 1 is provided with a first through hole 13 , which is staggered with the weight-reducing notch 33 , and the first through hole 13 corresponds to the area of ​​the outer extension 32 that does not include the weight-reducing notch 33 . Specifically, a plurality of weight-reducing notches 33 are provided on the edge of the cylinder 3, and a plurality of second through holes 35 are provided on the cylinder 3. The plurality of notches 14 and the plurality of weight-reducing notches 33 are alternately arranged up and down, and the first through hole 13 corresponds to the area of ​​the extension portion 32 that does not include the weight-reducing notches 33, so that the lubricating oil can first contact the skirt portion 12, then pass through the first through hole 13 or the notch 14, and then contact the extension portion 32, and finally flow out through the weight-reducing notch 33 or the second through hole 35, thereby increasing the flow path of the lubricating oil and reducing the impact force of the lubricating oil, so that the lubricating oil can flow back to the oil pool through the first through hole 13, the notch 14, the second through hole 35 and the weight-reducing notch 33 to ensure that the oil level is stable, which can further increase the reflux speed of the lubricating oil and reduce the weight of the cylinder 3.

[0037] Furthermore, in order to optimize the oil stabilization structure and ensure the stability of the oil level in the oil pool, the axial flow area of ​​the first flow structure is S1 ( Figure 3 The shaded area in the figure), the axial flow area of ​​the second flow structure is S2 ( Figure 5 The total number of the first through holes 13 and the notches 14 is n, the length from the edge of the cylinder head 2 to the edge of the cylinder 3 is L, and the height from the first flow structure to the second flow structure is H, wherein S1, S2, n, L and H satisfy: when S1<S2, H≥0.75×S1 / (2n×L), when S1>S2, H≥0.75×S2 / (2n×L).

[0038] Optionally, the cylinder 3 is provided with a vane groove 34, and at least one first flow structure is axially connected to the vane groove 34, which can spray lubricating oil on the blades slidingly connected to the vane groove 34, thereby reducing the friction between the blades and the vane groove 34, allowing the blades to slide out of the vane groove 34 smoothly, thereby effectively isolating the intake chamber and the exhaust chamber.

[0039] Optionally, the muffler 1 is further provided with a plurality of mounting holes 15, and one end of the bolt can pass through the mounting hole 15 to be connected to the cylinder head 2. Such a configuration can improve the stability of the connection between the muffler 1 and the cylinder head 2.

[0040] Optionally, the outer diameter of the muffler 1 is smaller than the inner diameter of the shell, and there is a gap between the edge of the muffler 1 and the inner wall of the shell, and the lubricating oil can flow back to the oil pool through the gap. Specifically, there is a first gap between the edge of the skirt portion 12 and the inner wall of the shell, which is convenient for the lubricating oil to flow back through the first gap, thereby improving the reflux efficiency of the lubricating oil, and the edge of the skirt portion 12 is provided with a plurality of notches 14 to avoid the generation of oil seals, thereby further improving the reflux efficiency of the lubricating oil; there is a second gap between the edge of the partial extension portion 32 and the inner wall of the shell, and the length of the second gap is smaller than the length of the first gap, thereby enabling the lubricating oil passing through the first gap to flow to the top wall of the extension portion 32, and then flow back to the oil pool through the second gap, the second through hole 35 or the weight-reducing notch 33, thereby increasing the flow path of the lubricating oil, reducing the impact force of the lubricating oil reflux, and improving the stability of the oil surface of the oil pool, and the edge of the extension portion 32 is provided with a plurality of weight-reducing notches 33 to avoid the generation of oil seals, thereby further improving the reflux efficiency of the lubricating oil and reducing the weight of the compressor.

[0041] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A compressor, characterized in that: include: A shell, a silencer (1) and a pump body fixed on the inner wall of the shell, the pump body comprising a cylinder head (2) and a cylinder (3), the two ends of the cylinder head (2) being respectively connected to the silencer (1) and the cylinder (3), the silencer (1) comprising a silencer cavity (11) and a skirt portion (12) connected to the outer periphery of the silencer cavity (11), the skirt portion (12) being provided with a plurality of first flow structures penetrating along the axial direction, the cylinder (3) being provided with a plurality of second flow structures penetrating along the axial direction, the plurality of the first flow structures and the plurality of the second flow structures being staggered along the axial direction, an oil pool being provided below the cylinder (3), and lubricating oil being able to flow to the oil pool through the first flow structure and the second flow structure.

2. The compressor according to claim 1, characterized in that The first flow-through structures and the second flow-through structures are arranged at intervals along the axial direction, so that a buffer zone is formed between the first flow-through structures and the second flow-through structures.

3. The compressor according to claim 2, characterized in that The cylinder (3) comprises a cylinder body (31) and an extension portion (32) connected to the outer periphery of the cylinder body (31); the extension portion (32) is fixedly connected to the inner wall of the outer shell; and a plurality of the second flow-through structures are arranged on the extension portion (32).

4. The compressor according to claim 3, characterized in that The outer diameter of the cylinder head (2) is smaller than the outer diameter of the cylinder (3), and the second flow-through structure is exposed on the outer periphery of the cylinder head (2).

5. The compressor according to claim 1, characterized in that The first flow-through structure comprises a first through hole (13) and / or a notch (14), wherein the notch (14) is recessed along the outer periphery of the skirt portion (12) in the axial direction of the muffler (1).

6. The compressor according to claim 5, characterized in that The outer extension (32) of the cylinder (3) is provided with a weight-reducing notch (33), the skirt portion (12) of the muffler (1) is provided with the first through hole (13), and the first through hole (13) and the weight-reducing notch (33) are arranged alternately.

7. The compressor according to claim 3, characterized in that The axial flow area of ​​the first flow structure is S1, the axial flow area of ​​the second flow structure is S2, the total number of the first flow structures is n, the length from the edge of the cylinder head (2) to the edge of the cylinder (3) is L, and the height from the first flow structure to the second flow structure is H, wherein S1, S2, n, L and H satisfy: when S1<S2, H≥0.75×S1 / (2n×L), when S1>S2, H≥0.75×S2 / (2n×L).

8. The compressor according to any one of claims 1 to 7, characterized in that: The cylinder (3) is provided with a vane groove (34), and at least one of the first flow-through structures is axially connected to the vane groove (34).

9. The compressor according to any one of claims 1 to 7, characterized in that: The muffler (1) is also provided with a plurality of mounting holes (15), and one end of a bolt can pass through the mounting hole (15) to be connected to the cylinder head (2).

10. A compressor according to any one of claims 1 to 7, characterized in that: The outer diameter of the muffler (1) is smaller than the inner diameter of the outer shell, and there is a gap between the edge of the muffler (1) and the inner wall of the outer shell, and the lubricating oil can flow back to the oil pool through the gap.

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