Refrigeration compressor valve plate with improved exhaust opening efficiency

Abstract

The utility model belongs to the technical field of valve plates, and discloses a refrigeration compressor valve plate capable of improving exhaust opening efficiency, which comprises a valve plate body, a mounting groove is arranged at the center of the valve plate body, the mounting groove is used for being matched with a bolt to be fixedly connected with a refrigeration compressor, and fixing grooves are arranged at corners of the valve plate body. The four fixing grooves are distributed in a rectangular array mode, four through type exhaust holes are formed in one end of the valve plate body, and four valve block grooves are formed in one end of the valve plate body. By means of the structure, gas is accelerated through the small-caliber end and then decelerated and depressurized at the large-caliber end in the exhaust process, stable transition of pressure is achieved, gas flowing resistance is reduced, exhaust efficiency is improved, and then the refrigeration performance of the refrigeration compressor is improved.

Description

Technical Field

[0001] This utility model belongs to the field of valve plate technology, specifically a refrigeration compressor valve plate that improves exhaust opening efficiency. Background Technology

[0002] As the core component of a refrigeration system, the performance of the refrigeration compressor directly determines the efficiency and stability of the system. The valve plate, as a key component of the refrigeration compressor, has a significant impact on the overall performance of the compressor. In recent years, with the continuous increase in demand for refrigeration equipment from various industries and the growing awareness of energy conservation and emission reduction, optimizing the performance of refrigeration compressor valve plates has become a hot research topic in the industry.

[0003] Meanwhile, the patent specification with application number CN103603789A discloses a valve plate for a refrigeration compressor. "The suction channel of the suction port is sequentially provided with a suction buffer zone, a suction straight zone, and a suction transition zone. The suction buffer zone is located on the opposite side of the plate, and the suction transition zone is frustoconical. The long base of the frustoconical zone is located on the front side of the plate, and the short base is connected to the suction straight zone. The exhaust channel of the second exhaust port is sequentially provided with an exhaust buffer zone and an exhaust transition zone. The exhaust buffer zone is located on the opposite side of the plate and includes at least two curved surfaces. The exhaust transition zone is frustoconical. The long base of the frustoconical zone is located on the front side of the plate, and the short base is connected to the exhaust buffer zone. This invention adds a suction buffer zone to the suction channel, effectively buffering the refrigerant before it enters the suction system, reducing airflow pulsation and pressure loss caused by airflow pulsation; the exhaust channel cross-section is variable, reducing gas turbulence."

[0004] In existing refrigeration compressor valve plates, ordinary exhaust holes tend to generate significant flow resistance during gas discharge, leading to low exhaust efficiency and affecting the refrigeration performance of the compressor. Secondly, the lack of or poor design of the flow-guiding structure on the valve plate makes turbulence and eddies easily occur during gas flow, increasing energy loss and causing significant impact and wear on the valve plates and valve discs, thus reducing the service life of the valve plate.

[0005] Therefore, a refrigeration compressor valve plate with improved exhaust opening efficiency is proposed to address the above problems. Utility Model Content

[0006] To address the problems mentioned in the background art, this utility model provides a refrigeration compressor valve plate with improved exhaust opening efficiency. It has the advantages of reducing gas flow resistance, improving exhaust efficiency, thereby enhancing the refrigeration performance of the refrigeration compressor, enabling the device to effectively guide gas flow, reducing the generation of turbulence and eddies, reducing energy loss, and at the same time reducing the impact and wear of gas on the valve plate and valve disc, thus extending the service life of the valve plate.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a refrigeration compressor valve plate with improved exhaust opening efficiency, comprising a valve plate body, wherein an installation groove is provided at the center of the valve plate body for fixing to the refrigeration compressor with bolts, and fixing grooves are provided at the corners of the valve plate body, the four fixing grooves being distributed in a rectangular array, four through exhaust holes are provided at one end of the valve plate body, and four valve plate grooves are provided at one end of the valve plate body, the four valve plate grooves being located on one side of the four exhaust holes, the exhaust holes being distributed in a circular array with the installation grooves as the center, and all four exhaust holes being stepped.

[0008] Preferably, the exhaust port consists of a small-diameter end and a large-diameter end, with the small-diameter end closer to the compression chamber and the large-diameter end closer to the exhaust passage.

[0009] Preferably, four guide grooves are provided at the edges of the four exhaust holes, and the corresponding two guide grooves are distributed in a mirror image.

[0010] Preferably, the depth of the guide groove gradually increases from the starting end to the connection with the exhaust port.

[0011] Preferably, the inner surface of the guide channel is polished, and the edges of the guide channel are rounded.

[0012] Preferably, the valve plate body is also provided with an air inlet hole. The distribution areas of the air inlet hole and the exhaust hole on the valve plate body are independent of each other, and the number of air inlets is four. The four air inlets are distributed in a rectangular array to ensure the stability and efficiency of the air intake process.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model, by setting a stepped exhaust port, with the small diameter end close to the compression chamber and the large diameter end close to the exhaust channel, allows the gas to accelerate first at the small diameter end and then decelerate and reduce pressure at the large diameter end during the exhaust process, achieving a smooth pressure transition, reducing gas flow resistance, improving exhaust efficiency, and thus enhancing the refrigeration performance of the refrigeration compressor.

[0015] 2. This utility model features four mirror-distributed guide grooves at the edges of the four exhaust holes. The depth of the guide grooves gradually increases from the starting point to the connection with the exhaust hole. The inner surface is polished and the edges are rounded. This allows the device to effectively guide the flow of gas, reduce the generation of turbulence and eddies, reduce energy loss, and at the same time reduce the impact and wear of gas on the valve plate and valve disc, thus extending the service life of the valve disc. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a top view of the overall structure of the valve plate body of this utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the valve plate body of this utility model;

[0019] Figure 4 This is a schematic diagram of the bottom structure of the main body of this utility model.

[0020] In the diagram: 1. Valve plate body; 2. Mounting groove; 3. Fixing groove; 4. Air inlet; 5. Air outlet; 6. Flow guide groove; 7. Valve plate groove. Detailed Implementation

[0021] 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.

[0022] like Figures 1 to 4 As shown, this utility model provides a refrigeration compressor valve plate with improved exhaust opening efficiency, including a valve plate body 1. A mounting groove 2 is provided at the center of the valve plate body 1, which is used to fix the valve plate to the refrigeration compressor with bolts. Fixing grooves 3 are provided at the corners of the valve plate body 1, and the four fixing grooves 3 are arranged in a rectangular array. Four through-hole exhaust holes 5 are provided at one end of the valve plate body 1, and four valve plate grooves 7 are provided at the other end of the valve plate body 1. The four valve plate grooves 7 are located on one side of the four exhaust holes 5. The exhaust holes 5 are arranged in a circular array with the mounting groove 2 as the center, and all four exhaust holes 5 are stepped. Through the design of the mounting groove 2 cooperating with bolts and the rectangular array distribution of the fixing grooves 3, a stable connection between the valve plate body 1 and the refrigeration compressor can be achieved, ensuring the valve plate's stable position during compressor operation and providing a foundation for the normal functioning of the exhaust holes 5, valve plate grooves 7, and other structures.

[0023] Specifically, the exhaust port 5 consists of a small-diameter end and a large-diameter end. The small-diameter end is closer to the compression chamber, and the large-diameter end is closer to the exhaust passage. The stepped design of the small-diameter end and the large-diameter end of the exhaust port 5 enables the gas to gradually transition in pressure during the exhaust process, reducing exhaust resistance, improving exhaust efficiency, and reducing the compressor's exhaust energy consumption.

[0024] like Figures 1 to 4 As shown, four guide grooves 6 are provided at the edges of the four exhaust holes 5. The corresponding two guide grooves 6 are distributed in a mirror image. The guide grooves 6 symmetrically distributed at the edges of the exhaust holes 5 can effectively guide the gas flow, avoid airflow turbulence, reduce energy loss during gas flow, and make the force of the gas on the valve plate more uniform.

[0025] Furthermore, the depth of the guide groove 6 gradually increases from the starting end to the connection with the exhaust port 5. The design of the guide groove 6 with a gradually changing depth can better adapt to changes in gas flow rate, further optimize the gas flow path, enhance the guiding effect, and reduce the impact of gas on the valve plate and valve disc.

[0026] like Figures 1 to 4 As shown, the inner surface of the guide channel 6 is polished, and the edges of the guide channel 6 are rounded. Polishing the inner surface and rounding the edges of the guide channel 6 can reduce the friction of gas flow, prevent impurities from adhering, avoid stress concentration, and improve the structural strength and service life of the guide channel 6.

[0027] It is worth noting that the valve plate body 1 is also provided with an air inlet 4. The air inlet 4 and the exhaust 5 are distributed in independent areas on the valve plate body 1, and there are four air inlets 4 arranged in a rectangular array to ensure the stability and efficiency of the air intake process. The independent distribution of the air inlet 4 and the exhaust 5 and the rectangular array arrangement of the air inlet 4 can avoid mutual interference between the air intake and exhaust airflow, ensure the stability of the air intake process, and enable the compressor to carry out the intake, compression and exhaust processes in an orderly manner, thereby improving the overall operating efficiency.

[0028] Working principle and process: When the refrigeration compressor is working, the gas is compressed in the compression chamber, and the pressure increases. The high-pressure gas flows in from the small-diameter end of the exhaust port 5. Because the small-diameter end is close to the compression chamber, the gas is accelerated here, and then enters the large-diameter end. The gas velocity decreases and the pressure transitions smoothly before flowing into the exhaust channel. During this process, the guide groove 6 on the edge of the exhaust port 5 guides the gas. Its gradual depth, polished surface, and rounded corners ensure orderly gas flow and reduce energy loss and impact. At the same time, the intake ports 4 are independently distributed, and external gas enters the compression chamber stably through the intake ports 4. The valve plate is installed in the valve plate groove 7 and opens and closes under the action of gas pressure, accurately controlling the gas inlet and outlet. The valve plate body 1 is firmly connected to the compressor through the mounting groove 2 and the fixing groove 3, ensuring the stable operation of the entire valve plate, thereby achieving a highly efficient refrigeration cycle.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A refrigeration compressor valve plate with improved unloading efficiency, comprising a valve plate body (1), characterized in that: The center of the valve plate body (1) is provided with a mounting groove (2) for fixing connection with the refrigeration compressor through bolts, and the corners of the valve plate body (1) are provided with fixed grooves (3), which are arranged in a rectangular array, one end of the valve plate body (1) is provided with four through exhaust holes (5), one end of the valve plate body (1) is provided with four valve plate grooves (7), four valve plate grooves (7) are located on one side of the four exhaust holes (5), the exhaust holes (5) are arranged in a ring array with the mounting groove (2) as the center, and the four exhaust holes (5) are all stepped.

2. The refrigeration compressor valve plate with improved unloading efficiency of claim 1, wherein: The exhaust hole (5) is composed of a small-diameter end and a large-diameter end, the small-diameter end is close to the compression chamber side, and the large-diameter end is close to the exhaust passage side.

3. The refrigeration compressor valve plate with improved unloading efficiency of claim 1, wherein: The edges of the four exhaust holes (5) are all provided with four flow guide grooves (6), and the corresponding two flow guide grooves (6) are mirror image distributed.

4. The refrigeration compressor valve plate with improved unloading efficiency of claim 3, wherein: The depth of the flow guide groove (6) gradually increases from the starting end to the connection with the exhaust hole (5).

5. The refrigeration compressor valve plate with improved unloading efficiency of claim 3, wherein: The inner surface of the flow guide groove (6) is polished, and the edge of the flow guide groove (6) is rounded.

6. The refrigeration compressor valve plate with improved unloading efficiency of claim 1, wherein: The valve plate body (1) is also provided with an air inlet hole (4), the distribution area of the air inlet hole (4) and the exhaust hole (5) on the valve plate body (1) is independent, and the number of the air inlet hole (4) is four, the four air inlet holes (4) are arranged in a rectangular array to ensure the stability and efficiency of the air inlet process.

Images