Rotary compressor piston with annular oil groove

Abstract

The utility model discloses a rotary compressor piston with an annular oil groove, comprising a piston, a crankshaft is passed through the interior of the piston, the crankshaft and the piston are arranged in an eccentric shaft manner, a crankshaft oil hole is transversely arranged on the middle side wall where the crankshaft and the piston are in contact, and the piston comprises a piston inner wall, and a piston oil groove is provided on the piston inner wall at a position corresponding to the oil outlet of the crankshaft oil hole; through the optimized and improved design of the product of the utility model, an annular oil groove is provided on the inner surface of the piston, and the width of the oil groove can be expanded without affecting the overall structure, so that the annular oil groove can provide an annular space for uniformly storing refrigeration oil, so that the oil storage space of the piston is effectively increased, thereby achieving the beneficial technical effect of effectively increasing the coverage area of ​​the refrigeration oil, improving the lubrication efficiency and the lubrication effect.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor pistons, in particular to a rotor compressor piston with an annular oil groove. Background Art

[0002] The rotary compressor piston, also known as the rolling rotor compressor piston or rotary piston, is the core component of the rotary compressor. The rotary compressor, also known as the rolling rotor compressor, does not perform the traditional reciprocating motion, but rotates along the eccentric shaft component. This movement makes the compressor more compact in structure, while also reducing the space volume, making the compressor more compact and lightweight.

[0003] However, the existing rotary compressor piston itself does not have an oil groove. When the compressor is running, the refrigeration oil stored at the bottom of the compressor is pumped into the cylinder through the combined action of the high pressure inside the compressor and the oil suction spacer in the crankshaft shaft hole; in the existing rotary compressor, since its rectangular eccentric oil groove is opened on the crankshaft, the lubricating oil is unevenly distributed during rotation, resulting in reduced lubrication efficiency.

[0004] There is currently no simple and easy solution to the technical problem that the lubricating oil is unevenly distributed when the piston of the rotary compressor rotates, resulting in reduced lubrication efficiency. Utility Model Content

[0005] In view of the above technical problems in the related art, the utility model proposes a rotor compressor piston with an annular oil groove, which can overcome the above shortcomings of the prior art.

[0006] In order to achieve the above technical purpose, the technical solution of the utility model is implemented as follows:

[0007] A rotary compressor piston having an annular oil groove;

[0008] The rotary compressor piston with an annular oil groove includes a piston, a crankshaft is passed through the interior of the piston, the crankshaft and the piston are arranged in an eccentric shaft manner, a crankshaft oil hole is transversely arranged on the middle side wall where the crankshaft and the piston are in contact, and the piston includes a piston inner wall, and a piston oil groove is opened on the piston inner wall at a position corresponding to the oil outlet of the crankshaft oil hole.

[0009] Furthermore, the piston oil groove is an annular oil groove, and the annular oil groove is consistent with a trajectory formed by the lateral rotation of the oil outlet of the crankshaft oil hole.

[0010] Furthermore, the transverse centerline of the crankshaft oil hole and the transverse centerline of the piston inner wall are arranged at the same height position, the number of the annular piston oil grooves is one, and the setting position of the piston oil groove is located at the transverse centerline of the piston inner wall.

[0011] Furthermore, a plurality of piston auxiliary oil grooves are symmetrically arranged above and below the piston oil groove, and mutually connected oil circuits are arranged between the piston oil grooves, and mutually connected oil circuits are also arranged between adjacent plurality of the piston auxiliary oil grooves.

[0012] Furthermore, the piston auxiliary oil groove is laterally expanded in a wave-like shape.

[0013] Furthermore, the longitudinal height of the piston oil groove is greater than or equal to the outer diameter of the crankshaft oil hole.

[0014] Furthermore, the refrigeration oil in the crankshaft is filled with the piston oil groove on the inner wall of the piston under the combined action of the internal high pressure of the compressor and the oil suction spacer.

[0015] The beneficial effects of the utility model are as follows: through the optimized and improved design of the product of the utility model, an annular oil groove is opened on the inner surface of the piston. The width of the oil groove can be expanded without affecting the overall structure, so that the annular oil groove can provide an annular space to evenly store the refrigeration oil, so that the oil storage space of the piston is effectively increased, thereby achieving the beneficial technical effect of effectively increasing the coverage area of ​​the refrigeration oil, and improving the lubrication efficiency and lubrication effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a three-dimensional diagram of the assembly state of a rotary compressor piston with an annular oil groove according to an embodiment of the utility model;

[0018] Figure 2 It is a cross-sectional view of an assembly state of a rotary compressor piston with an annular oil groove according to an embodiment of the utility model;

[0019] Figure 3 It is a three-dimensional schematic diagram of the piston structure of a rotary compressor piston with an annular oil groove according to an embodiment of the utility model;

[0020] In the figure: 1. Piston; 2. Crankshaft; 3. Crankshaft oil hole; 4. Piston oil groove; 5. Piston inner wall. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0022] It should be understood that in the description of the embodiments of the present utility model, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the embodiments of 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 understood as a limitation on the embodiments of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0023] like Figure 1-3 As shown, a rotary compressor piston with an annular oil groove according to an embodiment of the utility model includes a piston 1, a crankshaft 2 is passed through the interior of the piston 1, the crankshaft 2 and the piston 1 are arranged in an eccentric shaft manner, a crankshaft oil hole 3 is transversely provided on the middle side wall where the crankshaft 2 and the piston 1 are in contact, the piston 1 includes a piston inner wall 5, and a piston oil groove 4 is opened on the piston inner wall 5 at a position corresponding to the oil outlet of the crankshaft oil hole 3.

[0024] In a specific embodiment, the piston oil groove 4 is an annular oil groove, and the annular oil groove is consistent with a trajectory formed by the lateral rotation of the oil outlet of the crankshaft oil hole 3.

[0025] In a specific embodiment, the transverse center line of the crankshaft oil hole 3 and the transverse center line of the piston inner wall 5 are set at the same height position, the number of the annular piston oil groove 4 is one, and the setting position of the piston oil groove 4 is located at the transverse center line of the piston inner wall 5.

[0026] In a specific embodiment, a plurality of piston auxiliary oil grooves are symmetrically arranged above and below the piston oil groove 4, and oil circuits interconnected are arranged between the piston oil groove 4 and the piston auxiliary oil grooves, and oil circuits interconnected are also arranged between adjacent plurality of the piston auxiliary oil grooves.

[0027] In a specific embodiment, the piston auxiliary oil groove is laterally expanded in a wave-like shape.

[0028] In a specific embodiment, the longitudinal height of the piston oil groove 4 is greater than or equal to the outer diameter of the crankshaft oil hole 3 .

[0029] In a specific embodiment, the refrigeration oil in the crankshaft 2 is filled with the piston oil groove 4 on the inner wall 5 of the piston under the combined action of the internal high pressure of the compressor and the oil suction spacer.

[0030] In order to facilitate understanding of the above technical solution of the present invention, the above technical solution of the present invention is described in detail below through the working principle.

[0031] In specific use, according to the rotary compressor piston with an annular oil groove described in the utility model, when the compressor is running, the refrigeration oil fills the annular piston oil groove 4 opened on the piston 1 under the combined action of the internal high pressure and the oil suction spacer, so that while the refrigeration oil is lubricated, part of the refrigeration oil is evenly stored in the piston oil groove 4, thereby increasing the coverage area and lubrication effect of the refrigeration oil. In addition, the rotary compressor piston with an annular oil groove described in the utility model has a simple and reliable manufacturing process, which can be completed using a lathe processing process.

[0032] To sum up, with the help of the above-mentioned technical scheme of the utility model, through the optimization and improvement design of the product of the utility model, an annular oil groove is opened on the inner surface of the piston. Without affecting the overall structure, the width of the oil groove can be expanded, so that the annular oil groove can provide an annular space to evenly store the refrigeration oil, so that the oil storage space of the piston is effectively increased, thereby achieving the beneficial technical effect of effectively increasing the coverage area of ​​the refrigeration oil and improving the lubrication efficiency and lubrication effect.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary compressor piston having an annular oil groove, characterized in that: The invention comprises a piston (1), wherein a crankshaft (2) is inserted into the interior of the piston (1), wherein the crankshaft (2) and the piston (1) are arranged in an eccentric shaft manner, wherein a crankshaft oil hole (3) is transversely arranged on a middle side wall where the crankshaft (2) and the piston (1) are in contact, and wherein the piston (1) comprises a piston inner wall (5), wherein a piston oil groove (4) is arranged on the piston inner wall (5) at a position corresponding to an oil outlet of the crankshaft oil hole (3).

2. A rotary compressor piston with an annular oil groove according to claim 1, characterized in that: The piston oil groove (4) is an annular oil groove, and the annular oil groove is consistent with a trajectory formed by the lateral rotation of the oil outlet of the crankshaft oil hole (3).

3. A rotary compressor piston with an annular oil groove according to claim 2, characterized in that: The transverse centerline of the crankshaft oil hole (3) and the transverse centerline of the piston inner wall (5) are arranged at the same height position, the number of the annular piston oil groove (4) is one, and the piston oil groove (4) is arranged at the transverse centerline of the piston inner wall (5).

4. A rotary compressor piston with an annular oil groove according to claim 2, characterized in that: A plurality of piston auxiliary oil grooves are symmetrically arranged above and below the piston oil groove (4); an oil path interconnected with the piston oil groove (4) is arranged between the piston auxiliary oil grooves; and an oil path interconnected with the adjacent plurality of piston auxiliary oil grooves is also arranged between the adjacent plurality of piston auxiliary oil grooves.

5. A rotary compressor piston with an annular oil groove according to claim 4, characterized in that: The piston auxiliary oil groove is laterally expanded in a wave-like shape.

6. A rotary compressor piston with an annular oil groove according to claim 1, characterized in that: The longitudinal height of the piston oil groove (4) is greater than or equal to the outer diameter of the crankshaft oil hole (3).

7. A rotary compressor piston with an annular oil groove according to any one of claims 1 to 6, characterized in that: The refrigeration oil in the crankshaft (2) is filled into the piston oil groove (4) on the inner wall (5) of the piston under the combined action of the internal high pressure of the compressor and the oil suction spacer.

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