A cylinder head structure for a piston compressor

Abstract

The utility model relates to a cylinder cover structure for piston compressor, including the cylinder liner that installs piston in, the cylinder liner sets up in compressor fuselage, the cylinder liner top is equipped with the valve plate, the lower surface of valve plate and the inside of cylinder liner constitute compression chamber, and the top of valve plate is provided with cylinder cover, the inside of cylinder cover is provided with the buffer cavity that communicates with compression chamber, the top of buffer cavity is provided with the exhaust port of being favorable to exhaust, and the exhaust port is located the direct top of cylinder liner. The utility model discloses reasonable in structure design, through setting up buffer cavity in the inside of cylinder cover, is used for stabilizing exhaust gas flow, and the exhaust port of cylinder cover is set up in the direct top of cylinder liner, makes the exhaust more smooth, to improve the performance of compressor, and effectively reduces the damage of high temperature to compressor parts, and then improves the reliability and durability of compressor.

Description

Technical Field

[0001] This utility model relates to a cylinder head structure for a piston compressor. Background Technology

[0002] As a crucial component of reciprocating compressors, the cylinder head's primary function is to form a closed space with the cylinder, valve plate, and compressor housing, ensuring reliable flow of the compressed medium. With continuous advancements in reciprocating compressor technology, the structure of the compressor cylinder head needs constant optimization to reduce vibration and noise caused by the compressor's exhaust airflow on the system piping, and to improve the compressor's performance, reliability, and durability. Utility Model Content

[0003] The purpose of this invention is to provide a cylinder head structure for a piston compressor, so as to reduce the vibration and noise caused by the compressor exhaust airflow to the system pipeline, and improve the performance, reliability and durability of the compressor.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a cylinder head structure for a piston compressor, comprising a cylinder liner in which a piston is installed, the cylinder liner being disposed within the compressor body, a valve plate being installed on the top of the cylinder liner, the lower surface of the valve plate forming a compression chamber with the interior of the cylinder liner, a cylinder head being disposed on the top of the valve plate, a buffer chamber communicating with the compression chamber being disposed inside the cylinder head, an exhaust port being disposed on the top of the buffer chamber to facilitate exhaust, and the exhaust port being located directly above the cylinder liner.

[0005] Furthermore, the exhaust port is connected to the compressor exhaust pipe.

[0006] Furthermore, the cylinder liner is interference-fitted with the compressor body.

[0007] Furthermore, the flow cross-sectional area of ​​the buffer chamber is larger than that of the compression chamber.

[0008] Furthermore, an air intake port is provided at the bottom of the cylinder head, and the air intake port is directly opposite the exhaust port.

[0009] Furthermore, the valve plate has a connecting channel in the middle corresponding to the position of the air inlet, and the valve plate has an air inlet channel connected to the compression chamber on its periphery.

[0010] Compared with the prior art, the present invention has the following advantages: The present invention has a reasonable structural design. By setting a buffer chamber inside the cylinder head to stabilize the exhaust airflow, and setting the exhaust port of the cylinder head directly above the cylinder liner, the exhaust is smoother, thereby improving the performance of the compressor and effectively reducing the damage of high temperature to the compressor components, thus improving the reliability and durability of the compressor. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the front cross-sectional structure of an embodiment of the present invention.

[0012] In the picture: 1-Compressor exhaust pipe; 2-Cylinder head; 3-Valve plate; 4-Compressor body; 5-Cylinder liner; 6-Piston; 7-Compression chamber; 8-Buffer chamber; 9-Exhaust port; 10-Inlet port; 11-Connecting passage; 12-Inlet passage. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do 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, they should not be construed as limitations on this utility model.

[0015] like Figure 1As shown, this utility model discloses a cylinder head structure for a piston compressor. To reduce vibration and noise caused by the compressor's exhaust airflow to the system piping, and to improve the compressor's performance, reliability, and durability, it specifically includes a cylinder liner 5, a compressor body 4, a piston 6, a valve plate 3, and a cylinder head 2. The cylinder liner 5 is installed inside the compressor body 4, and the piston 6 is installed inside the cylinder liner. A valve plate 3 is installed on the top of the cylinder liner 5. The lower surface of the valve plate 3 and the interior of the cylinder liner 5 form a compression chamber 7. When the compressor is running, the piston reciprocates within the compression chamber, causing a volume change within the compression chamber, thus compressing and discharging the gas. The cylinder head 2 is located on the top of the valve plate 3. A buffer chamber 8, connected to the compression chamber 7, is located inside the cylinder head 2. An exhaust port 9, located directly above the cylinder liner 5, is located on the top of the buffer chamber 8 (i.e., the top of the cylinder head) to facilitate exhaust. During operation, due to the reciprocating motion of the piston, the airflow is discharged in a pulsed manner. This pulsed airflow can easily cause problems such as system pressure fluctuations, high noise and vibration. Therefore, a relatively large cavity with a large flow cross-sectional area, known as a buffer cavity, is set inside the cylinder head. When compressed gas enters the buffer cavity, the increased space alleviates the airflow pulses, and the gas velocity decreases, correspondingly reducing friction and impact between the gas and the cavity wall, thereby achieving the purpose of noise reduction, pressure stabilization, and noise reduction. Positioning the exhaust port of the cylinder head directly above the cylinder liner allows compressed gas to be discharged directly from the top of the cylinder head in the direction of airflow, reducing resistance and energy loss during exhaust and making exhaust smoother, thus improving compressor performance. Direct gas discharge from the top of the cylinder head effectively reduces heat exchange between high-temperature gas and compressor components such as the valve plate, cylinder liner, and piston, helping to lower the cylinder temperature, preventing compressor overheating, reducing heat load damage to compressor components, and thus improving the compressor's reliability and durability.

[0016] In this embodiment, the exhaust port 9 is connected to the compressor exhaust pipe 1. The compressor is a reciprocating positive displacement compressor, and its airflow is discharged from the cylinder in a pulse form.

[0017] In this embodiment, the cylinder liner 5 and the compressor body 4 form an interference fit to ensure that no loosening or displacement occurs during operation.

[0018] In this embodiment, the flow cross-sectional area of ​​the buffer cavity 8 is larger than the flow cross-sectional area of ​​the compression chamber 7.

[0019] In this embodiment, an air inlet 10 is provided at the bottom of the cylinder head 2, and the air inlet 10 is directly opposite the exhaust port 9.

[0020] In this embodiment, the valve plate 3 has a connecting channel 11 in the middle corresponding to the position of the air inlet 10, and the valve plate 3 has an air inlet channel 12 connected to the compression chamber 7 on its peripheral side. When the compressor is working, the external airflow enters the compression chamber through the air inlet channel, and the compressed airflow generated in the compression chamber enters the buffer chamber through the connecting channel and the air inlet, and is then directly discharged through the exhaust port and the compressor exhaust pipe.

[0021] In this embodiment, the cylinder head adopts a buffer chamber structure, which is a cavity with a certain volume inside the cylinder head. The piston compressor is a reciprocating positive displacement compressor, and its airflow is discharged from the cylinder in a pulse form. If the pulsed airflow directly enters the system pipeline, it will cause problems such as system pressure fluctuations, high noise and vibration. The cylinder head buffer chamber is located at the cylinder outlet. When the gas enters the buffer chamber, the increased space alleviates the airflow pulse, and the gas flow rate decreases. The friction and impact between the gas and the chamber wall are correspondingly reduced, thereby achieving the purpose of noise reduction, pressure stabilization, and noise reduction. The cylinder head adopts a top exhaust port structure, with the exhaust port of the cylinder head located directly above the cylinder liner. Compressed gas can be directly discharged from the top of the cylinder head in the direction of airflow, reducing resistance and energy loss during the exhaust process, making the exhaust smoother and improving the performance of the compressor. Gas is discharged directly from the top of the cylinder head, which can effectively reduce the heat exchange between the high-temperature gas and the compressor components, help reduce the temperature inside the cylinder, prevent the compressor from overheating, reduce the damage of heat load to the compressor components, and thus improve the reliability and durability of the compressor.

[0022] By adopting the above-mentioned cylinder head structure, the piston compressor can operate more smoothly, efficiently, and reliably, with obvious results.

[0023] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then, unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).

[0024] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.

[0025] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A cylinder head structure for a piston compressor, comprising a cylinder liner in which a piston is internally mounted, the cylinder liner being disposed within the compressor body, characterized in that: A valve plate is installed on the top of the cylinder liner. The lower surface of the valve plate and the inside of the cylinder liner form a compression chamber. A cylinder head is provided on the top of the valve plate. A buffer chamber communicating with the compression chamber is provided inside the cylinder head. An exhaust port is provided on the top of the buffer chamber to facilitate exhaust. The exhaust port is located directly above the cylinder liner.

2. The cylinder head structure for a piston compressor according to claim 1, characterized in that: The exhaust port is connected to the compressor exhaust pipe.

3. A cylinder head structure for a piston compressor according to claim 1, characterized in that: The cylinder liner is interference-fitted with the compressor body.

4. A cylinder head structure for a piston compressor according to claim 1, characterized in that: The flow cross-sectional area of ​​the buffer chamber is larger than that of the compression chamber.

5. A cylinder head structure for a piston compressor according to claim 1, characterized in that: The bottom of the cylinder head is provided with an air intake port, which is directly opposite the exhaust port.

6. A cylinder head structure for a piston compressor according to claim 5, characterized in that: The valve plate has a connecting channel in the middle corresponding to the position of the air inlet, and the valve plate has an air inlet channel connected to the compression chamber on its periphery.

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