Low-resistance high-efficiency valve plate for compressor based on pressure ratio optimization

Abstract

This utility model discloses a low-resistance, high-efficiency valve plate for a compressor based on pressure ratio optimization, including a valve plate body. The valve plate body has an intake port and an exhaust port. The exhaust port includes a primary exhaust port, a secondary exhaust port, and a tertiary exhaust port. In this application, the intake efficiency of the valve plate can be effectively improved. The elliptical intake port structure can effectively increase the intake area when the cylinder bore is small. Combined with the main intake port, it increases the intake flow rate and improves the intake utilization rate. It can effectively reduce the exhaust resistance of the valve plate. The gradual pressure reduction channel formed by the primary, secondary, and tertiary exhaust ports can reduce the exhaust flow resistance coefficient, reduce the exhaust pressure loss, and correspondingly reduce the input power.

Description

Technical Field

[0001] This utility model relates to the field of compressor valve plate technology, specifically a low-resistance, high-efficiency valve plate for compressors based on pressure ratio optimization. Background Technology

[0002] The compressor valve plate is a key component in a compressor, primarily used to control the flow, pressure, and direction of fluids. It is typically made of metal or polymer materials, has multiple holes and channels, and is installed inside the compressor cylinder.

[0003] In traditional valve plate designs, there are certain deficiencies in the matching between the diameter of the intake and exhaust ports on the valve plate and the pressure ratio. During operation, this often leads to airflow backflow during the intake process due to pressure fluctuations, and energy loss during the exhaust stage due to channel impedance. The lack of coordinated optimization of pressure ratio and port diameter distribution makes it difficult to further reduce the compressor input power. Utility Model Content

[0004] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-resistance, high-efficiency valve plate for a compressor based on pressure ratio optimization, comprising a valve plate body, wherein the valve plate body is provided with an intake hole and an exhaust hole, and the exhaust hole includes a primary exhaust hole, a secondary exhaust hole and a tertiary exhaust hole.

[0006] As a further embodiment of this utility model: the air intake hole is elliptical, the major axis of the inner diameter of the air intake hole is 8.7mm-8.9mm, and the minor axis of the inner diameter of the air intake hole is 6.7mm-6.9mm.

[0007] As a further embodiment of this utility model, the valve plate body is also provided with an air intake annular groove located outside the air intake hole.

[0008] As a further embodiment of this utility model: the primary exhaust hole, the secondary exhaust hole and the tertiary exhaust hole are all circular, the inner diameter of the primary exhaust hole is 5.14mm-5.16mm, the inner diameter of the secondary exhaust hole is 5.1mm-5.3mm, and the inner diameter of the tertiary exhaust hole is 4.1mm-4.3mm.

[0009] As a further embodiment of this utility model, the valve plate body is also provided with an exhaust annular groove located outside the primary exhaust hole.

[0010] As a further embodiment of this utility model: the edges of the air intake hole, the first-stage exhaust hole, the second-stage exhaust hole and the third-stage exhaust hole are all designed with chamfers, and the R chamfer and C chamfer are both 0.2mm.

[0011] As a further embodiment of this utility model: the cross-sectional area ratio of the air intake hole to the air exhaust hole is 1.3:1.

[0012] As a further embodiment of this utility model: mounting holes are provided at all four corners of the valve plate body to facilitate the installation of the valve plate body.

[0013] As a further embodiment of this utility model: grooves are provided on both the upper and lower sides of the valve plate body and near each mounting hole, a spring is fixed in the groove, and a pressing plate is fixed to the end of the spring away from the groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. In this application, the intake efficiency of the valve plate can be effectively improved. The elliptical intake hole structure can effectively increase the intake area when the cylinder hole is small. Combined with the main intake hole, it increases the intake flow rate and improves the intake utilization rate.

[0016] Second, in this application, the exhaust resistance of the valve plate can be effectively reduced. The gradual pressure reducing channel formed by the first-stage exhaust port, the second-stage exhaust port and the third-stage exhaust port can reduce the exhaust flow resistance coefficient, reduce the exhaust pressure loss, and correspondingly reduce the input power. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the valve plate body in Embodiment 1 of this utility model;

[0018] Figure 2 This is a front view structural diagram of the valve plate body in Embodiment 1 of this utility model;

[0019] Figure 3 This is a rear view structural schematic diagram of the valve plate body in Embodiment 1 of this utility model;

[0020] Figure 4 This is a side cross-sectional view of the valve plate body in Embodiment 1 of this utility model;

[0021] Figure 5 This is a schematic cross-sectional view of the valve plate body before spring compression in Embodiment 2 of this utility model;

[0022] Figure 6 This is a side cross-sectional view of the valve plate body after the spring is compressed in Embodiment 2 of this utility model.

[0023] The reference numerals and names in the figure are as follows:

[0024] 1. Valve plate body; 2. Intake hole; 201. Intake annular groove; 3. Primary exhaust hole; 301. Exhaust annular groove; 4. Secondary exhaust hole; 5. Tertiary exhaust hole; 6. Mounting hole; 7. Groove; 8. Spring; 9. Extrusion plate. Detailed Implementation

[0025] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1:

[0027] Please see Figure 1-4 A low-resistance, high-efficiency valve plate for a compressor based on pressure ratio optimization includes a valve plate body 1, on which an intake port 2 and an exhaust port are provided. The exhaust port includes a primary exhaust port 3, a secondary exhaust port 4 and a tertiary exhaust port 5.

[0028] Please see Figure 1 , Figure 2 and Figure 3 Furthermore, the air intake 2 is elliptical in shape, with a major axis of 8.7mm-8.9mm and a minor axis of 6.7mm-6.9mm. When the major axis of the air intake 2 is 8.8mm and the minor axis is 6.8mm, the minor axis of the air intake 2 constrains the airflow acceleration, while the major axis of the air intake 2 expands the air intake coverage area, which can improve volumetric efficiency, effectively increase the air intake area, and increase the air intake flow rate when combined with the main air intake 2, thereby improving the air intake utilization rate.

[0029] Please see Figure 3 and Figure 4 Furthermore, the valve plate body 1 is also provided with an air intake annular groove 201 located outside the air intake hole 2.

[0030] Please see Figure 1 and Figure 2Furthermore, the primary exhaust port 3, the secondary exhaust port 4, and the tertiary exhaust port 5 are all circular. The inner diameter of the primary exhaust port 3 is 5.14mm-5.16mm, the inner diameter of the secondary exhaust port 4 is 5.1mm-5.3mm, and the inner diameter of the tertiary exhaust port 5 is 4.1mm-4.3mm. When the inner diameter of the primary exhaust port 3 is 5.15mm, the inner diameter of the secondary exhaust port 4 is 5.2mm, and the inner diameter of the tertiary exhaust port 5 is 4.2mm, the primary exhaust port 3, the secondary exhaust port 4, and the tertiary exhaust port 5 form a three-stage gradual pressure reduction channel, which allows the airflow to transition smoothly, reduces the exhaust flow resistance coefficient, reduces exhaust pressure loss, and correspondingly reduces the input power.

[0031] Please see Figure 1 and Figure 4 Furthermore, the valve plate body 1 is also provided with an exhaust annular groove 301 located outside the first-stage exhaust hole 3.

[0032] Please see Figure 1 and Figure 4 Furthermore, the edges of the intake hole 2, the primary exhaust hole 3, the secondary exhaust hole 4, and the tertiary exhaust hole 5 are all chamfered, with both the radius (R) and radius (C) chamfers being 0.2mm. The radius (R) chamfer reduces the loss of airflow separation, and the smooth transition curve allows the airflow to flow along the wall, reducing boundary layer separation. The radius (C) chamfer facilitates processing quality control, eliminates processing burrs, and avoids local turbulence. The combination of radius (R) and radius (C) chamfers is more comprehensive than a single chamfer.

[0033] Please see Figure 1 and Figure 2 In this embodiment, the cross-sectional area ratio of the intake hole 2 to the exhaust hole is 1.3:1. The cross-sectional area ratio of the intake hole 2 to the exhaust hole is matched so that the elliptical intake hole 2 and the three-stage exhaust hole 5 form a synergistic effect with this cross-sectional area ratio, which effectively increases the intake area and reduces the exhaust flow resistance coefficient, thereby reducing exhaust pressure loss.

[0034] In summary, this application incorporates the suction and discharge pressure ratio parameter into the valve plate orifice design. Through the synergistic optimization of pressure ratio and orifice, it breaks through the dependence of traditional structures on a fixed pressure ratio, achieving low-resistance and high-efficiency operation within a specific operating range. It is particularly suitable for energy-saving upgrades of high back-pressure refrigeration systems.

[0035] Example 2, please refer to Figure 5-6 :

[0036] The valve plate body 1 has mounting holes 6 at each of its four corners for easy installation. Grooves 7 are provided on the upper and lower sides of the valve plate body 1 near each mounting hole 6. A spring 8 is fixed in each groove 7, and a pressing plate 9 is fixed to the end of the spring 8 furthest from the groove 7. When installing the valve plate body 1 into the compressor, since the valve plate body 1 needs to fit snugly against the mounting position, the mounting holes 6 can be used to screw in bolts, thus fitting one side of the valve plate body 1 against the mounting position. During tightening, the compressive force on the valve plate body 1 is applied to the pressing plate 9, compressing the spring 8. This compresses the spring 8 and causes it to enter the groove 7. Meanwhile, the pressing plate 9 on the other side of the valve plate body 1 can be pressed by subsequent installation components, causing the corresponding spring 8 to enter the corresponding groove 7. By setting the groove 7, spring 8 and pressing plate 9 on the valve plate body 1, the restoring and rebounding action of the spring 8 can provide a reaction force that always acts on the valve plate body 1. Since the valve plate body 1 is being tightened by the bolts at this time, it can interact with the tightening force and cancel each other out, thereby making the valve plate body 1 more stable in the installation position and reducing the possibility of the valve plate body 1 becoming loose.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A low-resistance, high-efficiency valve plate for a compressor based on pressure ratio optimization, comprising a valve plate body (1), characterized in that, The valve plate body (1) is provided with an air intake hole (2) and an exhaust hole, the exhaust hole including a primary exhaust hole (3), a secondary exhaust hole (4) and a tertiary exhaust hole (5).

2. The low-resistance, high-efficiency valve plate for a compressor based on pressure ratio optimization according to claim 1, characterized in that, The air intake hole (2) is elliptical, with the major axis of the inner diameter of the air intake hole (2) being 8.7mm-8.9mm and the minor axis of the inner diameter of the air intake hole (2) being 6.7mm-6.9mm.

3. The low-resistance, high-efficiency valve plate for a compressor based on pressure ratio optimization according to claim 1, characterized in that, The valve plate body (1) is also provided with an air intake annular groove (201) located outside the air intake hole (2).

4. A low-resistance, high-efficiency valve plate for a compressor based on pressure ratio optimization according to claim 1, characterized in that, The first-stage exhaust hole (3), the second-stage exhaust hole (4) and the third-stage exhaust hole (5) are all circular. The inner diameter of the first-stage exhaust hole (3) is 5.14mm-5.16mm, the inner diameter of the second-stage exhaust hole (4) is 5.1mm-5.3mm, and the inner diameter of the third-stage exhaust hole (5) is 4.1mm-4.3mm.

5. A low-resistance, high-efficiency valve plate for a compressor based on pressure ratio optimization according to claim 1, characterized in that, The valve plate body (1) is also provided with an exhaust annular groove (301) located outside the first-stage exhaust hole (3).

6. A low-resistance, high-efficiency valve plate for a compressor based on pressure ratio optimization according to claim 1, characterized in that, The edges of the air intake hole (2), the first-stage exhaust hole (3), the second-stage exhaust hole (4) and the third-stage exhaust hole (5) are all chamfered, and the R chamfer and C chamfer are both 0.2mm.

7. A low-resistance, high-efficiency valve plate for a compressor based on pressure ratio optimization according to claim 1, characterized in that, The ratio of the cross-sectional area of ​​the air intake hole (2) to the air exhaust hole is 1.3:

1.

8. A low-resistance, high-efficiency valve plate for a compressor based on pressure ratio optimization according to claim 1, characterized in that, The valve plate body (1) is provided with mounting holes (6) at all four corners to facilitate the installation of the valve plate body (1).

9. A low-resistance, high-efficiency valve plate for a compressor based on pressure ratio optimization according to claim 8, characterized in that, The valve plate body (1) has grooves (7) on both the upper and lower sides and near each mounting hole (6). A spring (8) is fixed in the groove (7), and a pressing plate (9) is fixed at the end of the spring (8) away from the groove (7).

Images