Compressor cylinder lubricating structure

Abstract

The utility model discloses a compressor air cylinder lubricating structure which is characterized by comprising an oil injection mechanism arranged on the side portion of an air cylinder piston, the air cylinder piston is connected with a guide piston through a connecting rod, and the oil injection direction of the oil injection mechanism points to the side, adjacent to a cross joint, of the air cylinder piston. And the oil injection mechanism is additionally arranged to directly inject oil towards the cylinder piston to improve the lubricating performance between the cylinder piston and the compression cylinder, so that the oil injection pressure of the oil injection mechanism is reduced, the overall design difficulty of the compressor is reduced, and the safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of compressors, and in particular to a compressor cylinder lubrication structure. Background Technology

[0002] Most existing compressor cylinder lubrication structures employ high-pressure oil injection lubrication. This design results in high-pressure, complex injectors with stringent machining precision requirements. Considering the significant heat generated during compressor operation, design or manufacturing defects in the oil injection system can easily lead to fires and other safety hazards. To address these issues, splash lubrication generated during crankshaft and connecting rod movement is used to reduce cylinder piston friction. However, this structure is unsuitable for high-pressure stage compressors equipped with guide pistons. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the purpose of this utility model is to provide a compressor cylinder lubrication structure to reduce the lubrication oil injection pressure of the high-pressure stage compressor.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A compressor cylinder lubrication structure includes an oil injection mechanism disposed on the side of the cylinder piston. The cylinder piston is connected to a guide piston via a connecting rod, and the oil injection direction of the oil injection mechanism is directed towards the side of the cylinder piston adjacent to the cross-section.

[0006] In a preferred embodiment of the present invention, an atomizing chamber is provided between the cylinder piston and the guide piston, and the oil injection mechanism is placed on the side of the atomizing chamber to spray oil onto the connecting rod and the cylinder piston through the atomizing chamber. The connecting rod passes through the atomizing chamber and is connected to the bottom of the cylinder piston.

[0007] In a preferred embodiment of the present invention, the atomizing chamber has a first side chamber and a second side chamber arranged in a mirror image with the connecting rod as the axis. The first side chamber separates the fuel injection mechanism from the cylinder piston, providing an atomizing space for the fuel injection mechanism.

[0008] In a preferred embodiment of this utility model, the guide piston and the cylinder piston are both placed in a communicating space, and the guide piston, the connecting rod, the cylinder piston and the oil injection mechanism constitute a splash lubrication system.

[0009] In a preferred embodiment of the present invention, the oil injection mechanism has an oil injection valve for precisely controlling the oil output.

[0010] In a preferred embodiment of the present invention, the guide piston is located below the cylinder piston and drives the cylinder piston upward to perform compression work through the connecting rod.

[0011] In a preferred embodiment of this utility model, the crankshaft connecting rod is located below the guide piston, driving the guide piston to move upward, thereby pushing the cylinder piston to move upward in compression.

[0012] The beneficial effects of this utility model are as follows:

[0013] The present invention provides a compressor cylinder lubrication structure by adding an oil injection mechanism to improve the lubrication performance between the cylinder piston and the compressor cylinder by directly injecting oil towards the cylinder piston, reducing the oil injection pressure of the oil injection mechanism, reducing the overall design difficulty of the compressor, and improving safety. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a cross-sectional view of the overall structure of this utility model.

[0016] Figure 2 yes Figure 1 A magnified view of a section of the fuel injection mechanism. Detailed Implementation

[0017] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. The above description is for the purpose of simplifying the description of this utility model and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0018] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature, but do not exclude the presence of one or more other features.

[0019] When a component is described in the specification as being "on", "fixed" to, "connected" to, or "joined" to another component, the component may be directly located on, fixed to, connected to, joined to, or in contact with the other component, or there may be an intermediate component present.

[0020] Exemplary embodiments of this application will now be described with reference to the accompanying drawings. However, it should be understood that this application can be presented in many different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments. Throughout the drawings, the same reference numerals denote the same or functionally identical elements.

[0021] Figure 1 The overall cylinder lubrication structure is shown. The crankshaft connecting rod 20 of the compressor is located at the bottom and drives the cylinder piston 50 upward to perform the compression action via the guide cylinder 30. The cylinder structure is basically arranged in a communicating space formed by the working chamber 31, the atomizing chamber 40, and the compression cylinder 60. The guide cylinder 30 is placed in the working chamber 31, and the piston cylinder 50 is placed in the compression cylinder 60. The guide cylinder 30 and the cylinder piston 50 are connected and driven by a connecting rod 10. The oil injection mechanism 70 is located on the side of the connecting rod 10 and sprays high-pressure oil towards the lower part of the cylinder piston 50. The atomizing chamber 40 is placed between the cylinder piston 50 and the guide piston 30, and the connecting rod 10 passes through the atomizing chamber 40 and connects to the cylinder piston 50. The atomizing chamber 40 is used to collect the oil sprayed by the oil injection mechanism 70. The connecting rod 10 pulls the cylinder piston 50 to reciprocate, and splash lubrication further reduces the resistance between the cylinder piston 50 and the compression cylinder 60. In addition, the added fuel injection mechanism 70 has a fuel injection valve that can precisely control the amount of fuel injected.

[0022] Reference Figure 2 The diagram further illustrates the structure of the fuel injection mechanism and the atomizing chamber. The atomizing chamber 40 consists of a first side chamber 41 and a second side chamber 42, respectively arranged on both sides of the connecting rod 10. Since the piston compression cylinder 60 is inclined upwards, the second side chamber 42 is located diagonally below the first side chamber 41. A third side chamber 41 is also provided diagonally above the first side chamber 41. The fuel injection mechanism 70 is positioned on the side of the third side chamber 41 and injects fuel towards the first side chamber 41 through the third side chamber 41. On the one hand, the purpose of designing the third side chamber 41 is to provide sufficient fuel atomization space between the nozzle 72 and the connecting rod 10 and cylinder piston 50, so that the injected fuel can spread as much as possible and cover the bottom of the connecting rod 10 and cylinder piston 50. On the other hand, since the working chamber 31 where the guide piston 30 is located is at the bottom, the continuously sprayed oil will gradually accumulate in the working chamber 31. When the guide piston 30 moves back and forth with the crankshaft connecting rod 20, it will splash the lubricating oil to reduce the resistance between the cylinder piston 50 and the compression cylinder 60 through splash lubrication.

[0023] The advantage of this invention lies in the fact that the oil injection mechanism 70 achieves primary lubrication between the cylinder piston 50 and the compression cylinder 60, and then the movement of the guide piston 30 lifts the lubricating oil to provide secondary lubrication between the cylinder piston 50 and the compression cylinder 60. This secondary lubrication effectively reduces the oil injection pressure of the oil injection mechanism 70, simplifies the overall design, and improves safety.

Claims

1. A compressor cylinder lubrication structure, characterized in that, It includes an injection mechanism disposed on the side of the cylinder piston, the cylinder piston being connected to a guide piston via a connecting rod, and the injection direction of the injection mechanism pointing towards the side of the cylinder piston adjacent to the cross-section.

2. The compressor cylinder lubrication structure as described in claim 1, characterized in that, An atomizing chamber is provided between the cylinder piston and the guide piston. The oil injection mechanism is located on the side of the atomizing chamber and injects oil into the connecting rod and the cylinder piston through the atomizing chamber. The connecting rod passes through the atomizing chamber and is connected to the bottom of the cylinder piston.

3. The compressor cylinder lubrication structure as described in claim 2, characterized in that, The atomizing chamber has a first side chamber and a second side chamber arranged mirror images of the connecting rod as the axis. The first side chamber separates the fuel injection mechanism from the cylinder piston, providing an atomizing space for the fuel injection mechanism.

4. The compressor cylinder lubrication structure as described in claim 3, characterized in that, The guide piston and the cylinder piston are both placed in a communicating space, and the guide piston, the connecting rod, the cylinder piston and the oil injection mechanism constitute a splash lubrication system.

5. The compressor cylinder lubrication structure as described in claim 1, characterized in that, The oil injection mechanism has an oil injection valve for precisely controlling the oil output.

6. A compressor cylinder lubrication structure as described in any one of claims 1 to 5, characterized in that, The guide piston is located below the cylinder piston and drives the cylinder piston upward through the connecting rod to perform compression work.

7. A compressor cylinder lubrication structure as described in claim 6, characterized in that, The crankshaft connecting rod of the compressor is located below the guide piston, driving the guide piston to move upward, thereby pushing the cylinder piston to move upward in compression.

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