Compressor valve group structure capable of preventing liquid impact

Abstract

The compressor valve group structure comprises a valve plate, an air suction valve plate is arranged at the front end of the valve plate, an exhaust valve plate and an exhaust valve limiting plate are arranged at the rear end of the valve plate, and the compressor valve group structure is characterized in that an oil leakage groove is formed in the air suction end of the valve plate and arranged along an air suction hole; and the tail end of the oil leakage groove is connected with the exhaust hole of the valve plate. The oil leakage groove communicated with the exhaust hole is formed in the air suction end of the valve plate, so that retained liquid is directionally discharged, liquid impact is eliminated, and the valve plate is prevented from being broken; the boss is matched with the notch, so that the exhaust valve plate is only mounted in one direction, and mixed mounting is avoided; and the diameter of the exhaust hole is reduced by 1-2mm, so that the clearance volume is reduced, and the compression efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and more specifically, to a compressor valve group structure with anti-liquid slugging feature. Background Technology

[0002] The valve assembly structure of a reciprocating compressor is a core component affecting its performance and reliability. In existing technology, the valve assembly typically consists of an intake valve plate, an exhaust valve plate, a valve plate, and an exhaust valve plate limiting plate, such as... Figure 5-7 As shown, its working principle is as follows: when the pressure inside the cylinder is lower than the pressure at the intake end, the intake valve opens and the exhaust valve closes; when the pressure inside the cylinder is higher than the pressure at the exhaust end, the exhaust valve opens and the intake valve closes, thereby realizing the periodic intake and exhaust of gas.

[0003] However, this structure still has the following significant drawbacks in practical applications:

[0004] Liquid slugging risk: The suction valve plate is susceptible to liquid slugging caused by the retention of liquid refrigerant or lubricating oil, which can lead to fatigue fracture of the valve plate, especially under low temperature or high humidity conditions where the failure rate increases significantly.

[0005] Efficiency loss: Excessive exhaust port clearance volume causes residual high-pressure gas to expand during the intake phase, occupying cylinder volume and reducing compression efficiency. This effect is particularly pronounced in small-displacement engines.

[0006] Assembly risks: The interchangeable design of the valve plate and the exhaust valve disc makes them easy to mix during assembly, which can lead to sealing failure.

[0007] There is currently no effective solution to the above problems. Utility Model Content

[0008] In view of the above-mentioned technical problems in related technologies, this utility model proposes a compressor valve group structure with anti-liquid slugging, which can overcome the above-mentioned shortcomings of the prior art.

[0009] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows:

[0010] A compressor valve assembly structure with anti-liquid slugging feature includes a valve plate, a front end of which is provided with an intake valve plate, and a rear end of which is provided with an exhaust valve plate and an exhaust valve limiting plate. The valve plate is characterized in that an oil leakage groove is provided at the intake end, the oil leakage groove is arranged along the intake hole, and the end of the oil leakage groove is connected to the exhaust hole of the valve plate.

[0011] Furthermore, the oil leakage grooves corresponding to a single air intake hole are not connected, but the oil leakage grooves corresponding to two air intake holes are connected between the two air intake holes and then connected to the exhaust holes respectively.

[0012] Furthermore, the valve plate has a boss at the connection with the exhaust valve plate, and the exhaust valve plate has a groove that matches the boss.

[0013] Furthermore, the diameter of the exhaust port is 1-2 mm smaller than that of the original exhaust port.

[0014] The beneficial effects of this utility model are as follows: This utility model sets an oil leakage groove that connects to the exhaust hole at the intake end of the valve plate, thereby allowing the stagnant liquid to be discharged in a directional manner, thus eliminating liquid hammer and preventing valve plate breakage; the matching structure between the boss and the groove ensures that the exhaust valve plate is installed in only one direction, thus avoiding mixed installation; by reducing the diameter of the exhaust hole by 1-2mm, the clearance volume is reduced, thereby improving the compression efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the oil leakage groove structure at the suction end of the valve plate of the compressor valve group structure with anti-liquid slugging, according to an embodiment of the present utility model.

[0017] Figure 2 This is a schematic diagram of the exhaust valve plate installation structure of the compressor valve group structure with anti-liquid slugging according to the embodiments of this utility model;

[0018] Figure 3 This is a schematic diagram of the boss-slot anti-foolproof structure of the compressor valve group structure with anti-liquid slugging according to an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the exhaust valve plate structure of the compressor valve group structure with anti-liquid slugging according to an embodiment of the present utility model;

[0020] Figure 5 This is an exploded view of a conventional valve assembly according to an embodiment of the present utility model;

[0021] Figure 6 This is a diagram of the valve plate intake end according to an embodiment of the present invention;

[0022] Figure 7 This is a diagram of the valve plate exhaust end according to an embodiment of the present utility model;

[0023] In the diagram: 1. Valve plate; 2. Intake valve plate; 3. Exhaust valve plate; 4. Exhaust valve limit plate; 5. Intake end; 6. Oil leakage groove; 7. Intake hole; 8. Exhaust hole; 9. Boss; 10. Groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0025] like Figure 1-3 As shown, a compressor valve assembly structure with anti-liquid slugging according to an embodiment of the present invention includes a valve plate 1, a suction valve plate 2 at the front end of the valve plate 1, an exhaust valve plate 3 and an exhaust valve limiting plate 4 at the rear end of the valve plate 1, characterized in that the suction end 5 of the valve plate 1 is provided with an oil leakage groove 6, the oil leakage groove 6 is arranged along the suction hole 7, and the end of the oil leakage groove 6 is connected to the exhaust hole 8 of the valve plate 1.

[0026] The oil leakage grooves 6 corresponding to a single air intake 7 are not connected, but the oil leakage grooves 6 corresponding to two air intake 7 are connected between the two air intake 7 and then respectively connected to the exhaust 8. The shape and depth of the oil leakage grooves can be set according to needs.

[0027] The valve plate 1 has a boss 9 at the connection with the exhaust valve plate 3, and the exhaust valve plate 3 has a groove 10 that matches the boss 9. The shape and position of the boss in the foolproof design can be set as needed.

[0028] The exhaust port 8 is 1-2mm smaller in diameter than the original exhaust port. The size of the exhaust port varies depending on the flow rate of different discharge volumes. The clearance volume is reduced while ensuring the flow rate. The specific size can be set according to needs.

[0029] To facilitate understanding of the above-mentioned technical solutions of this utility model, the following detailed description of the above-mentioned technical solutions of this utility model is provided through specific usage methods.

[0030] In practical use, according to the compressor valve group structure with anti-liquid slugging described in this utility model, the suction end features an oil leakage groove design, through which liquid refrigerant or lubricating oil is discharged from the exhaust port. Reducing the exhaust port size decreases the clearance volume, improving the performance of small-displacement compressors. Bosses are provided on the mounting surfaces of the valve plate and the exhaust valve plate, and slots are provided on the exhaust valve plate. This boss-slot anti-misfit structure prevents misfitting.

[0031] In summary, by utilizing the above-mentioned technical solution of this utility model, an oil leakage groove is provided at the intake end of the valve plate to connect with the exhaust hole, thereby allowing the stagnant liquid to be discharged in a directional manner, thus eliminating liquid hammer and preventing valve plate breakage; the matching structure between the boss and the groove ensures that the exhaust valve plate is installed in only one direction, thus avoiding mixed installation; by reducing the diameter of the exhaust hole by 1-2mm, the clearance volume is reduced, thereby improving the compression efficiency.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A compressor valve assembly structure with anti-liquid slugging feature, comprising a valve plate (1), wherein a suction valve plate (2) is provided at the front end of the valve plate (1), and an exhaust valve plate (3) and an exhaust valve limiting plate (4) are provided at the rear end of the valve plate (1), characterized in that, The valve plate (1) has an oil leakage groove (6) at the air intake end (5), the oil leakage groove (6) is arranged along the air intake hole (7), and the end of the oil leakage groove (6) is connected to the exhaust hole (8) of the valve plate (1).

2. The compressor valve assembly structure with anti-liquid slugging as described in claim 1, characterized in that, The oil leakage groove (6) corresponding to a single air intake hole (7) is not connected, but the oil leakage groove (6) corresponding to two air intake holes (7) are connected between the two air intake holes (7) and then connected to the exhaust hole (8) respectively.

3. The compressor valve assembly structure with anti-liquid slugging according to any one of claims 1-2, characterized in that, The valve plate (1) has a boss (9) at the connection with the exhaust valve plate (3), and the exhaust valve plate (3) has a groove (10) that matches the boss (9).

4. The compressor valve assembly structure with anti-liquid slugging as described in claim 3, characterized in that, The exhaust hole (8) is 1-2 mm smaller in diameter than the original exhaust hole.

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