Cylinder head with water cooling structure and air compressor

Abstract

This utility model discloses a cylinder head and an air compressor with a water-cooled structure, relating to the field of air compressor technology; it includes a cylinder head body and a valve seat plate connected below the cylinder head body; the cylinder head body has a water inlet and a water outlet; the cylinder head body has an inlet groove and an outlet groove inside, and a first cooling water pipe and a second cooling water pipe are connected inside the cylinder head body; the first cooling water pipe connects the inlet and the inlet groove, and the second cooling water pipe connects the outlet and the outlet groove; the valve seat plate has an inlet connection groove and an outlet connection groove; the inlet groove and the inlet connection groove are connected to form a first water passage cavity, and the outlet groove and the outlet connection groove are connected to form a second water passage cavity; the valve seat plate has a water receiving cavity inside, one side of which is connected to the first water passage cavity, and the other side is connected to the second water passage cavity; cooling water enters the water receiving cavity after passing through the inlet, the first cooling water pipe, and the first water passage cavity, and flows through the water receiving cavity, the second water passage cavity, and the second cooling water pipe before flowing out from the outlet.

Description

Technical Field

[0001] This utility model belongs to the field of air compressor technology, specifically relating to a cylinder head with a water-cooled structure and an air compressor. Background Technology

[0002] In a vehicle air braking system, the air compressor is a device that provides and maintains air at a certain pressure to operate the air brakes and auxiliary air system.

[0003] However, existing air compressors have grooves on the top of the cylinder head body as cooling water channels. Therefore, to seal these channels, a butterfly-shaped cover plate is connected to the top of the cylinder head body, with a seal between the cylinder head body and the butterfly cover plate. This easily leads to multiple leaks at the seal location. Furthermore, when a certain amount of gas is injected into the air compressor and reaches a preset threshold, the valve connected to the dryer opens, transferring gas from the dryer and the pipeline connecting the dryer and the air compressor into the compressor. The air compressor compresses the gas and discharges it through the gas passage. Because the cylinder head body has grooves for cooling water channels, and there is interference between the gas passage and the cooling water passage—meaning that existing air compressors lack a separate unloading valve and unloading passage, and the gas passage and cooling water passage intersect—the gas entering the air compressor cannot be discharged to the cylinder head body through a separate path. This results in mutual consumption between the airflow and water flow, reducing operating efficiency. In addition, the cross-flow creates localized temperature differences, further reducing heat exchange efficiency. Utility Model Content

[0004] This utility model provides a cylinder head and air compressor with a water-cooled structure to solve the problem that the top of the cylinder head body is also connected to a butterfly-shaped cover plate, and a seal is connected between the cylinder head body and the butterfly-shaped cover plate, which easily leads to multiple leaks at the location of the seal; and the gas passage and cooling water passage are intersected, which prevents the gas entering the air compressor from being discharged through a separate passage, and causes mutual consumption between airflow and water flow, reducing operating efficiency.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A cylinder head with a water-cooled structure includes a cylinder head body and a valve seat plate connected to the lower part of the cylinder head body; a water inlet is formed on one side wall of the cylinder head body, and a water outlet is formed on the other side wall; a water inlet groove and a water outlet groove are formed inside the cylinder head body; a first cooling water pipe and a second cooling water pipe protruding from the inner wall of the cylinder head body are connected inside the cylinder head body, and the first cooling water pipe and the second cooling water pipe are symmetrically formed into an ω-shaped structure; the first cooling water pipe connects the water inlet and the water inlet groove, and the second cooling water pipe connects the water outlet and the water outlet groove; the valve seat... The plate has an inlet connection groove symmetrically connected to the inlet groove and an outlet connection groove symmetrically connected to the outlet groove; the inlet groove and the inlet connection groove are connected to form a first water passage cavity, and the outlet groove and the outlet connection groove are connected to form a second water passage cavity; the valve seat plate also has a water receiving cavity inside, one side of the water receiving cavity is connected to the first water passage cavity, and the other side of the water receiving cavity is connected to the second water passage cavity; cooling water flows through the inlet, through the first cooling water pipe and the first water passage cavity, and then enters the water receiving cavity, flows through the water receiving cavity, through the second water passage cavity and the second cooling water pipe, and flows out from the outlet.

[0007] In existing air compressors, a butterfly-shaped cover plate is connected to the top of the cylinder head body, and a seal is connected between the cylinder head body and the butterfly-shaped cover plate. This results in multiple leaks at the seal location in the air compressor. Therefore, this application eliminates the original butterfly-shaped cover plate. Since the purpose of the butterfly-shaped cover plate connected to the top of the cylinder head body is to seal the cooling water channels opened on the top of the cylinder head body, removing the butterfly-shaped cover plate exposes the cooling water channels originally located on the top surface of the cylinder head body to the air. Therefore, to avoid the cooling water channels being exposed to the air, it is necessary to redesign the cooling water channels of the cylinder head body. This application replaces the traditional cooling water channels opened on the top surface of the cylinder head body by adding cooling water pipes inside the cylinder head body. Specifically, this application connects a first cooling water pipe and a second cooling water pipe protruding from the inner wall of the cylinder head body. The inlet of the cylinder head body is connected to the first cooling water pipe, and the outlet is connected to the second cooling water pipe. The cylinder head body also has an inlet groove and an outlet groove. The valve seat plate is connected to the bottom of the cylinder head body. The valve seat plate has an inlet connection groove, an outlet connection groove, and a water receiving cavity. The inlet connection groove is connected to the inlet groove to form a first water passing cavity, and the outlet groove is connected to the outlet connection groove to form a second water passing cavity. The first water passing cavity and the second water passing cavity are not connected to each other, but are connected to the water receiving cavity of the valve seat plate. Therefore, the water flows through the first cooling water pipe into the first water passing cavity, then flows through the water receiving cavity in the valve seat plate, and then enters the second cooling water pipe from the second water passing cavity and flows out from the drain outlet, thereby achieving cooling of the cylinder head body, reducing the working temperature of the cylinder head body, and improving the service life of the cylinder head body.

[0008] Preferably, the cylinder head body also has an unloading boss protruding from the inner wall of the cylinder head body. One side of the unloading boss has a first unloading hole communicating with the inside of the cylinder head body, and the other side of the unloading boss has a second unloading hole communicating with the inside of the cylinder head body.

[0009] By setting an unloading boss inside the cylinder head body, with a first unloading hole and a second unloading hole on each side of the unloading boss, the gas can be connected between the two cylinders in the cylinder block. This avoids the traditional method where gas needs to pass through a valve seat plate to be output, causing cross-flow between gas and cooling water, resulting in mutual obstruction and poor flow between gas and cooling water. Since the air compressor and dryer are connected by a pipeline, when the pressure inside the air compressor reaches a preset threshold, the valve on the dryer opens, allowing the gas inside the dryer to enter the air compressor through the pipeline. Because the existing cylinder head body does not have an unloading valve, and traditional piston air compressors are driven by engine gears, the air compressor remains in a constant state of flux as the engine runs. In operation, the air compressor compresses gas and discharges it through the gas passage. This not only keeps the air compressor working during the intake and unloading process, leading to excessively high compressor temperatures and potential damage to components, but also causes interference between the gas and cooling water channels, which are recessed inside the cylinder head body. In this application, the butterfly cover is eliminated, and the first and second cooling water pipes are connected inside the cylinder head body. Separate first and second unloading holes are also provided to separate the flow of cooling water and gas, eliminating interference between them. Therefore, the air compressor can be stopped from working, avoiding energy waste caused by the air compressor constantly operating, thus reducing energy consumption and extending the service life of the air compressor.

[0010] Preferably, the unloading boss is further provided with an unloading groove. One side of the unloading groove is connected to the first unloading hole, and the other side of the unloading groove is connected to the second unloading hole, so that the first unloading hole, the unloading groove and the second unloading hole are connected to form an unloading channel.

[0011] Furthermore, a signal gas pipe is also provided on the cylinder head body, and a first signal gas hole and a second signal gas hole connected to the signal gas pipe are also provided on the cylinder head body. When the first signal gas hole is open, the second signal gas hole can be closed, and when the second signal gas hole is open, the first signal gas hole can be closed, so that the signal gas can enter the signal gas pipe from the first signal gas hole or the second signal gas hole. The cylinder head body is also connected to a first vent pipe and a second vent pipe, wherein one end of the first vent pipe is connected to a first unloading valve, one end of the second vent pipe is connected to a second unloading valve, and the other end of the first vent pipe and the other end of the second vent pipe are connected to form a V-shaped structure. The signal gas enters the first unloading valve through the signal gas pipe. After the first unloading valve is opened, the signal gas enters the second vent pipe through the first vent pipe and reaches the second unloading valve. After the second unloading valve is opened, since the first unloading valve and the second unloading valve are connected through the unloading channel, the airflow can be interconnected between the left and right cylinders.

[0012] The signal gas can avoid interference with the cooling water in the first and second cooling water pipes, and the gas does not need to pass through the original exhaust chamber of the air compressor. Therefore, the air compressor can be in a non-working state. After passing through the air compressor through the pipeline, the gas flows directly from the unloading channel, the first unloading hole and the second unloading hole to each other, thereby realizing the gas can be interconnected between the cylinders on both sides of the cylinder body. This allows the air compressor to run idle, thereby reducing power and preventing the air compressor from always being in a working state. This further reduces energy consumption and improves the safety performance and service life of the air compressor.

[0013] The following conceptual explanation is required:

[0014] The so-called exhaust unloading refers to the installation of an unloading valve or a dryer with unloading function in the exhaust pipeline from the air compressor to the air tank. In this state, the air compressor is in exhaust unloading mode; that is, after the air pressure in the air tank reaches the set pressure, the unloading valve, through its own structure, opens the exhaust path to the atmosphere and blocks the backflow of compressed air from the air tank. Clearly, the air compressor's inlet and outlet valves are still operating at this time. Due to the pressure loss in the exhaust pipeline and the limitation of the unloading valve's opening degree, the shaft power of the air compressor at this time should be greater than the shaft power when the air compressor is empty.

[0015] The so-called intake unloading refers to connecting the compressor's volumetric chamber to the cylinder head intake chamber or a pre-designated separate chamber. When the pressure in the air reservoir reaches a preset pressure, high-pressure gas is released internally. This high-pressure gas, the aforementioned signal gas, drives the actuator in the compressor's intake unloading process to achieve unloading. At this point, the compressor will no longer intake or exhaust air from the outside; that is, both the intake and exhaust valves will cease operation. If the connecting pipe diameter is structurally advanced, it will be larger than the compressor's exhaust pipe diameter. In other words, the unloading power at this time will be less than the power of the compressor when it is idling without an exhaust pipe.

[0016] Preferably, a first unloading valve is connected to the first unloading hole; and a second unloading valve is connected to the second unloading hole.

[0017] By setting a first unloading valve in the first unloading hole and a second unloading valve in the second unloading hole, when the pressure inside the air compressor reaches a preset threshold, the pistons of the first and second unloading valves are opened. Since the valve seat plate has holes corresponding to the pistons of the first and second unloading valves, when the pistons of the first and second unloading valves are opened, a communicating cavity is formed between the two holes of the valve seat plate, thereby enabling airflow to flow between the first and second unloading holes. This realizes the traditional airflow between the two cylinders, that is, by opening the first and second unloading valves, gas can flow between the left and right cylinders of the cylinder body.

[0018] Preferably, the top of the cylinder head body is provided with a groove, which extends downward from the top surface of the cylinder head body by a predetermined distance but does not penetrate the cylinder head body, and the bottom wall of the groove is connected to a positioning boss.

[0019] By setting a groove on the top of the cylinder head body and connecting a positioning boss inside the groove, the purpose is to make the position of the positioning boss correspond to the position of the unloading channel, so as to facilitate the opening of a positioning hole that communicates with the unloading channel.

[0020] Preferably, the positioning boss has a positioning hole, and a threaded plug for sealing the positioning hole is connected inside the positioning hole.

[0021] A positioning hole is made in the positioning boss. The purpose of the positioning hole is to connect the unloading channel and the pipeline of the dryer, so that the gas in the dryer can be transported to the positioning hole through the pipeline and then to the unloading channel to complete the signal transmission. When not in use, the positioning hole is sealed with a threaded plug. When venting, the threaded plug is used to seal the positioning hole to prevent the gas from escaping from the positioning hole, so that the gas can be discharged through the exhaust chamber and the exhaust hole. Venting is only performed after the work is completed. Unloading and venting are not performed simultaneously. Therefore, the positioning hole, the first unloading valve and the second unloading valve are opened when unloading, but the positioning hole, the first unloading valve and the second unloading valve are not opened when venting.

[0022] Preferably, a first vent pipe and a second vent pipe are symmetrically connected to both sides of the positioning boss; one end of the first vent pipe is connected to the first unloading valve, and one end of the second vent pipe is connected to the second unloading valve; the other end of the first vent pipe is connected to the other end of the second vent pipe to form a V-shaped structure.

[0023] The purpose of providing a first vent pipe and a second vent pipe on both sides of the positioning boss in this application is to allow signal gas to enter the signal gas pipe from either the first or second signal gas hole. The cylinder head body is also connected to a first vent pipe and a second vent pipe. One end of the first vent pipe is connected to a first unloading valve, and one end of the second vent pipe is connected to a second unloading valve. The other ends of the first and second vent pipes are connected to form a V-shaped structure. The signal gas enters the first unloading valve through the signal gas pipe. After the first unloading valve is opened, the signal gas enters the second vent pipe through the first vent pipe and reaches the second unloading valve. After the second unloading valve is opened, since the first and second unloading valves are connected through an unloading channel, airflow can be mutually transmitted between the left and right cylinders without passing through the valve seat plate, the first cooling water pipe, or the second cooling water pipe. Therefore, the gas and cooling water do not interfere with each other, further improving gas and water transmission efficiency, avoiding mutual consumption between airflow and water flow, reducing operating efficiency, and preventing local temperature differences and decreased heat exchange efficiency caused by cross-flow.

[0024] Preferably, the first ventilator and the second ventilator are set at an acute angle.

[0025] Preferably, the top of the cylinder head body is provided with an air inlet communicating with the interior, and one side wall of the cylinder head body is provided with an air outlet communicating with the interior. The interior of the cylinder head body has an air intake chamber communicating with the air inlet and an exhaust chamber communicating with the air outlet; multiple connecting ribs are connected inside the exhaust chamber.

[0026] The cylinder head body has an air inlet at the top, through which gas enters the intake chamber. Gas flowing through the intake chamber passes through the valve seat plate into the cylinder below. After compression, the gas exits through the exhaust chamber and is discharged to the outside. Furthermore, the purpose of providing multiple connecting ribs within the exhaust chamber is to increase the heat dissipation area and prevent excessively high gas temperatures within the air compressor. Excessive exhaust temperature affects the compressor's lifespan, as overheating reduces the viscosity of the lubricating oil, leading to undue wear on bearings, cylinders, and piston rings, and even causing serious accidents such as burnt bearings, journals, and cylinder wall scoring. It can also cause oil leakage, and the lubricating oil decomposes upon contact with metals, generating carbon deposits. This leads to premature aging of components and reduced service life. Therefore, this application increases the exhaust chamber's surface area by adding connecting ribs and increasing its volume, thereby improving the cooling efficiency of the cylinder head body and reducing the air compressor's exhaust temperature from 220°C to 190°C.

[0027] This application also relates to an air compressor based on the above-described cylinder head, cylinder block, power assembly, and drive device with a water-cooled structure; the bottom of the valve seat plate of the cylinder head is connected to the cylinder block, and the power assembly is connected inside the cylinder block; the power assembly includes a crankshaft and a piston connected to the crankshaft; one end of the crankshaft extends outside the cylinder block and is connected to the drive device; gas enters the cylinder block through the cylinder head body and the valve seat plate, and the compressed gas is discharged through the valve seat plate and the cylinder head body.

[0028] The air compressor of this application adopts a cylinder head with a water-cooled structure as described above. It eliminates the butterfly cover plate connected to the top of the original cylinder head, instead using a cylinder head body and a valve seat plate connected to the bottom of the cylinder head body. The cooling water channel on the top of the cylinder head body is eliminated. A first cooling water pipe and a second cooling water pipe protruding from the inner wall are connected inside the cylinder head body. A first water passage cavity and a second water passage cavity are formed between the cylinder head body and the valve seat plate. The first and second water passage cavities are not directly connected, but are connected through a water-receiving cavity on the valve seat plate, allowing cooling water to flow out through the first water passage cavity, the water-receiving cavity, and the second water passage cavity, thus avoiding the traditional method of opening a cooling water channel on the top of the cylinder head body. The traditional method requires adding a butterfly cover to seal the cooling water passages. However, due to the low sealing performance, water leaks between the butterfly cover and the cylinder head body. This application, however, allows cooling water to flow through the first and second cooling water pipes inside the cylinder head body, reducing the occurrence of leaks. Furthermore, the cylinder head body of this application is also connected to a first unloading valve, a second unloading valve, and a positioning hole. Gas can enter the first and second unloading valves inside the cylinder head body through the positioning hole, avoiding cross-contamination between the gas and the cooling water inside the cylinder head body, thus avoiding energy consumption. Moreover, the air compressor does not need to be constantly in operation during the unloading cycle, thereby reducing the energy consumption of the air compressor.

[0029] Due to the adoption of the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0030] This application relates to a cylinder head with a water-cooled structure, including a cylinder head body and a valve seat plate connected to the lower part of the cylinder head body; a water inlet is provided on one side wall of the cylinder head body, and a water outlet is provided on the other side wall; a water inlet groove and a water outlet groove are provided inside the cylinder head body, and a first cooling water pipe and a second cooling water pipe protruding from the inner wall of the cylinder head body are connected inside the cylinder head body, the first cooling water pipe and the second cooling water pipe symmetrically forming a ω-shaped structure; the first cooling water pipe connects the water inlet and the water inlet groove, and the second cooling water pipe connects the water outlet and the water outlet groove; the... The valve seat plate has an inlet connection groove symmetrically connected to the inlet groove and an outlet connection groove symmetrically connected to the outlet groove; the inlet groove and the inlet connection groove are connected to form a first water passage cavity, and the outlet groove and the outlet connection groove are connected to form a second water passage cavity; the valve seat plate also has a water receiving cavity inside, one side of the water receiving cavity is connected to the first water passage cavity, and the other side of the water receiving cavity is connected to the second water passage cavity; cooling water flows through the inlet, through the first cooling water pipe and the first water passage cavity, and then enters the water receiving cavity, flows through the water receiving cavity, through the second water passage cavity and the second cooling water pipe, and flows out from the outlet.

[0031] This application's cylinder head eliminates the need for the butterfly-shaped cover plate previously attached to the top of the cylinder head, simplifying the device's structure. It also avoids the existing air compressors that have a butterfly-shaped cover plate attached to the top of the cylinder head body, with a seal connecting the cylinder head body and the butterfly-shaped cover plate, leading to multiple leaks at the seal location in the air compressor. By using a cylinder head body and a valve seat plate connected to the bottom of the cylinder head body, the cooling water channel on the top of the cylinder head body is eliminated. A first and second cooling water pipe, protruding from the inner wall, are connected inside the cylinder head body, preventing the cooling water channel from being exposed to air. This application adds a first and second cooling water pipe inside the cylinder head body instead of the traditional cooling water channel on the top surface of the cylinder head body. Cooling water enters the cylinder head body through the first cooling water channel and flows out through the second cooling water channel, reducing leakage. Furthermore, the cylinder head body also has an inlet and outlet water channel, and the valve seat plate has an inlet... The system includes a water inlet connection groove, an outlet connection groove, and a water receiving chamber. The inlet connection groove is connected to the inlet channel to form a first water receiving chamber, and the outlet channel is connected to the outlet connection groove to form a second water receiving chamber. The first and second water receiving chambers are not connected to each other, but are connected to the water receiving chamber of the valve seat plate. Therefore, after the water flows through the first cooling water pipe into the first water receiving chamber, it flows through the water receiving chamber in the valve seat plate, which can effectively reduce the temperature of the valve seat plate. Then, it enters the second cooling water pipe from the second water receiving chamber and flows out from the drain outlet, thereby achieving cooling of the cylinder head body, reducing the working temperature of the cylinder head body, and improving the service life of the cylinder head body. Attached Figure Description

[0032] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0033] Figure 1 This is a structural diagram of a cylinder head with a water-cooled structure according to one embodiment of this application;

[0034] Figure 2 This is a structural diagram of a cylinder head body with a water-cooled structure according to one embodiment of this application;

[0035] Figure 3 This is a structural diagram of a valve seat plate of a cylinder head with a water-cooled structure according to one embodiment of this application;

[0036] Figure 4 This is a structural diagram of an air compressor according to one embodiment of this application;

[0037] in,

[0038] 1. Cylinder head body; 2. Valve seat plate; 3. Cylinder block; 4. Crankshaft; 5. First cooling water pipe; 6. Second cooling water pipe; 7. Water inlet; 8. Water outlet; 9. Air inlet; 10. Air outlet; 11. Water inlet groove; 12. Water outlet groove; 13. Water inlet connection groove; 14. Water outlet connection groove; 15. Unloading boss; 16. First unloading hole; 17. Second unloading hole; 18. Unloading groove; 19. First unloading valve; 20. Second unloading valve; 21. Groove; 22. Positioning boss; 23. Positioning hole; 24. First vent pipe; 25. Second vent pipe; 26. Intake chamber; 27. Exhaust chamber; 28. Connecting rib; 29. ​​First hole position; 30. Second hole position; 31. First signal gas hole; 32. Second signal gas hole; 33. Signal gas pipe. Detailed Implementation

[0039] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0040] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", 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 simplifying the description, 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.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "aspect," or "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0044] Example 1

[0045] This utility model relates to a cylinder head with a water-cooled structure, such as Figure 1-4As shown, the cylinder head includes a cylinder head body 1 and a valve seat plate 2 connected to the lower part of the cylinder head body 1; a water inlet 7 is provided on one side wall of the cylinder head body 1, and a water outlet 8 is provided on the other side wall; a water inlet groove 11 and a water outlet groove 12 are provided inside the cylinder head body 1, and a first cooling water pipe 5 and a second cooling water pipe 6 protruding from the inner wall of the cylinder head body 1 are connected inside the cylinder head body 1. The first cooling water pipe 5 and the second cooling water pipe 6 are symmetrically formed into an ω-shaped structure; the first cooling water pipe 5 connects the water inlet 7 and the water inlet groove 11, and the second cooling water pipe 6 connects the water outlet 8 and the water outlet groove 12; the valve seat plate 2 has... The valve seat plate 2 has an inlet connection groove 13 symmetrically connected to the inlet groove 11 and an outlet connection groove 14 symmetrically connected to the outlet groove 12. The inlet groove 11 and the inlet connection groove 13 are connected to form a first water passage cavity, and the outlet groove 12 and the outlet connection groove 14 are connected to form a second water passage cavity. The valve seat plate 2 also has a water receiving cavity inside. One side of the water receiving cavity is connected to the first water passage cavity, and the other side of the water receiving cavity is connected to the second water passage cavity. Cooling water flows through the inlet 7, through the first cooling water pipe 5 and the first water passage cavity, and then enters the water receiving cavity. It flows through the water receiving cavity, through the second water passage cavity and the second cooling water pipe 6, and then flows out from the outlet 8.

[0046] In existing air compressors, a butterfly-shaped cover plate is connected to the top of the cylinder head body 1. A seal is connected between the cylinder head body 1 and the butterfly-shaped cover plate, resulting in multiple leaks at the seal location in the air compressor. Therefore, this application eliminates the original butterfly-shaped cover plate. Since the purpose of the butterfly-shaped cover plate connected to the top of the cylinder head body 1 is to seal the cooling water channels opened on the top of the cylinder head body 1, after eliminating the butterfly-shaped cover plate, the cooling water channels originally located on the top surface of the cylinder head body 1 will be exposed to the air. Therefore, to avoid the cooling water channels being exposed to the air, it is necessary to redesign the cooling water channels of the cylinder head body 1. This application replaces the traditional cooling water channels opened on the top surface of the cylinder head body 1 with cooling water pipes added inside the cylinder head body 1. Specifically, this application connects a first cooling water pipe 5 and a second cooling water pipe 6 protruding from the inner wall inside the cylinder head body 1. The inlet 7 of the cylinder head body 1 is connected to the first cooling water pipe 5, and the outlet 8 is connected to the second cooling water pipe 6. The cylinder head body 1 also has... The cylinder head body 1 has an inlet groove 11 and an outlet groove 12. The valve seat plate 2 is connected to the bottom of the cylinder head body 1. The valve seat plate 2 has an inlet connection groove 13, an outlet connection groove 14, and a water receiving cavity. The inlet connection groove 13 is connected to the inlet groove 11 to form a first water receiving cavity. The outlet groove 12 is connected to the outlet connection groove 14 to form a second water receiving cavity. The first water receiving cavity and the second water receiving cavity are not connected to each other, but are connected to the water receiving cavity of the valve seat plate 2. Therefore, the water flows through the first cooling water pipe 5 into the first water receiving cavity, then flows through the water receiving cavity in the valve seat plate 2, and then enters the second cooling water pipe 6 from the second water receiving cavity and flows out from the drain outlet, thereby cooling the cylinder head body 1, reducing the working temperature of the cylinder head body 1, and improving the service life of the cylinder head body 1.

[0047] Preferably, the cylinder head body 1 is further provided with a load relief boss 15 protruding from the inner wall of the cylinder head body 1. A first load relief hole 16 communicating with the inside of the cylinder head body 1 is provided on one side of the load relief boss 15, and a second load relief hole 17 communicating with the inside of the cylinder head body 1 is provided on the other side of the load relief boss 15.

[0048] By providing an unloading boss 15 inside the cylinder head body 1, and opening a first unloading hole 16 and a second unloading hole 17 on both sides of the unloading boss 15, the first unloading hole 16 and the second unloading hole 17 are used to allow gas to flow between the left and right cylinders. This avoids the traditional phenomenon where gas needs to pass through the valve seat plate 2 to be output, causing gas to cross the cooling water passage, resulting in mutual obstruction between gas and cooling water and poor flow between gas and cooling water. The air compressor and the dryer are connected by a pipeline. When the pressure inside the air compressor reaches a preset threshold, the valve on the dryer opens, allowing the gas inside the dryer to enter through the pipeline. The air enters the air compressor, and the cooling water channel is opened inside the cylinder head body 1 in the form of a groove 21. Therefore, there will be cross interference between the gas and the cooling water channel. However, in this application, the butterfly cover is eliminated, and the first cooling water pipe 5 and the second cooling water pipe 6 are connected inside the cylinder head body 1. Separate first unloading hole 16 and second unloading hole 17 are also provided to realize the separation between cooling water and gas. There will be no interference between the two. Therefore, the air compressor does not need to be in working state at this time and can be stopped, avoiding the energy waste caused by the air compressor being in working state all the time, thereby reducing energy consumption and improving the service life of the air compressor.

[0049] Preferably, the unloading boss 15 is further provided with an unloading groove 18. One side of the unloading groove 18 is connected to the first unloading hole 16, and the other side of the unloading groove 18 is connected to the second unloading hole 17, so that the first unloading hole 16, the unloading groove 18 and the second unloading hole 17 are connected to form an unloading channel.

[0050] Preferably, a first unloading valve 19 is connected inside the first unloading hole 16; and a second unloading valve 20 is connected inside the second unloading hole 17.

[0051] Because the existing cylinder head body 1 does not have an unloading valve, the piston air compressor is driven by the engine gears. As the engine continues to run, the air compressor is always in operation. The existing air compressor lacks an unloading valve device. The air compressor achieves unloading by connecting to a dryer via a pipeline. When a certain amount of gas is injected into the air compressor, and the gas reaches a preset threshold, the valve connected to the dryer is opened, transferring gas from the dryer and the pipeline connecting the dryer and the air compressor to the air compressor. The air compressor compresses the gas and discharges it through the gas passage. This not only keeps the air compressor in operation during the intake unloading process, leading to excessively high compressor temperatures and potential damage to components, but also prevents the gas entering the air compressor from being discharged through a separate passage. This application addresses this by providing a first unloading hole and a second unloading hole. A first unloading valve 19 is installed in the first unloading hole 16, and a second unloading valve 19 is installed in the second unloading hole 17. A second unloading valve 20 is provided. Correspondingly, the valve seat plate 2 has a first hole 29 and a second hole 30. The first hole 29 is connected to the piston of the first unloading valve, and the second hole 30 is connected to the piston of the second unloading valve. When the pressure in the air tank reaches a preset threshold, and the air compressor does not need to deliver gas, a certain amount of gas is injected into the air compressor through the dryer. The gas can push open the pistons of the first and second unloading valves, so that the piston of the first unloading valve moves away from the first hole by a certain distance, and the piston of the second unloading valve moves away from the second hole by a certain distance. This allows the cylinders on the left and right sides of the cylinder body to be interconnected through the first hole, the second hole, the first unloading hole, and the second unloading hole, thereby realizing the mutual communication of gas between the first and second unloading valves. The airflow can flow between the left and right cylinders, and the direction of the compressed air in the left and right cylinders is opposite, thereby realizing the idling of the air compressor. Therefore, when the pressure inside the air compressor reaches the preset threshold, the opening of the first unloading valve 19 and the second unloading valve 20 allows gas to flow from one side of the cylinder to the other side, enabling gas to circulate within the cylinder and thus allowing the air compressor to idle. Since the intake chamber and exhaust chamber are connected, the air compressor is in a non-working state, thereby reducing the excessive temperature caused by the air compressor being in a working state for a long time.

[0052] Furthermore, a signal gas pipe 33 is also provided on the cylinder head body 1, and a first signal gas hole 31 and a second signal gas hole 32 connected to the signal gas pipe are also provided on the cylinder head body. When the first signal gas hole 31 is open, the second signal gas hole 32 can be closed, and when the second signal gas hole 32 is open, the first signal gas hole 31 can be closed; so that signal gas can enter the signal gas pipe 33 from the first signal gas hole 31 or the second signal gas hole 32. A first vent pipe 24 and a second vent pipe 25 are also connected to the cylinder head body 1, wherein one end of the first vent pipe 24 is connected to the first unloading valve 19, and one end of the second vent pipe 25 is connected to the first unloading valve 19. The two unloading valves 20 are connected. The other end of the first vent pipe 24 is connected to the other end of the second vent pipe 25 to form a V-shaped structure. The signal gas enters the first unloading valve 19 through the signal gas pipe 33. After the first unloading valve 19 is opened, the signal gas enters the second vent pipe 25 through the first vent pipe 24 and reaches the second unloading valve 20. After the second unloading valve 20 is opened, since the first unloading valve 19 and the second unloading valve 20 are connected through the unloading channel, the first unloading valve 19 can be connected to one side of the cylinder, and the second unloading valve 20 can be connected to the other side of the cylinder, so that the airflow can be interconnected between the left and right cylinders.

[0053] The signal gas can avoid interference with the cooling water in the first and second cooling water pipes, and the gas does not need to pass through the original exhaust chamber of the air compressor. Therefore, the air compressor can be in a non-working state. After passing through the air compressor through the pipeline, the gas flows directly through the unloading channel, the first unloading hole 16 and the second unloading hole 17, thereby enabling the gas to communicate between the cylinders on both sides of the cylinder body. This allows the air compressor to run idle, thereby reducing power consumption and preventing the air compressor from always being in a working state. This further reduces energy consumption and improves the safety performance and service life of the air compressor.

[0054] Preferably, the top of the cylinder head body 1 is provided with a groove 21, which extends downward from the top surface of the cylinder head body 1 by a predetermined distance but does not penetrate the cylinder head body 1, and the bottom wall of the groove 21 is connected to a positioning boss 22.

[0055] A groove 21 is provided on the top of the cylinder head body 1, and a positioning boss 22 is connected in the groove 21. Preferably, a positioning hole 23 is provided in the positioning boss 22, and a threaded plug for sealing the positioning hole 23 is connected in the positioning hole 23.

[0056] In use, the gas is sealed by a threaded plug to prevent gas from escaping from the positioning hole 23, and the gas is discharged through the exhaust chamber 27 and the outlet hole.

[0057] Preferably, the two sides of the positioning boss 22 are symmetrically connected with a first vent pipe 24 and a second vent pipe 25; one end of the first vent pipe 24 is connected to the first unloading valve, one end of the second vent pipe 25 is connected to the second unloading valve, and the other end of the first vent pipe 24 is connected to the other end of the second vent pipe 25 to form a V-shaped structure.

[0058] The purpose of providing a first vent pipe 24 and a second vent pipe 25 on both sides of the positioning boss 22 is to allow signal gas to enter the signal gas pipe 33 from the first signal gas hole 31 or the second signal gas hole 32. The cylinder head body 1 is also connected to the first vent pipe 24 and the second vent pipe 25. One end of the first vent pipe 24 is connected to the first unloading valve 19, and one end of the second vent pipe 25 is connected to the second unloading valve 20. The other end of the first vent pipe 24 and the other end of the second vent pipe 25 are connected to form a V-shaped structure. Signal gas enters the first unloading valve 19 through the signal gas pipe 33. After opening the first unloading valve 19, the signal gas... The gas enters the second vent pipe 25 through the first vent pipe 24 and reaches the second unloading valve 20. After the second unloading valve 20 is opened, the gas flow can be interconnected between the left and right cylinders because the first unloading valve 19 and the second unloading valve 20 are connected through the unloading channel. This allows the gas to flow between the cylinders on both sides without passing through the valve seat plate 2, the first cooling water pipe 5, and the second cooling water pipe 6. Therefore, the gas and cooling water will not interfere with each other, which further improves the gas and water transmission efficiency, avoids mutual consumption between the gas flow and water flow, reduces operating efficiency, and avoids the problem of local temperature difference and reduced heat exchange efficiency caused by cross flow.

[0059] Preferably, the first vent pipe 24 and the second vent pipe 25 are arranged at an acute angle.

[0060] Preferably, the top of the cylinder head body 1 is provided with an air inlet 9 communicating with the interior, and one side wall of the cylinder head body 1 is provided with an air outlet 10 communicating with the interior. The interior of the cylinder head body 1 has an air intake chamber 26 communicating with the air inlet 9 and an exhaust chamber 27 communicating with the exhaust port 10; a plurality of connecting ribs 28 are connected inside the exhaust chamber 27.

[0061] The cylinder head body 1 has an air inlet 9 at the top. Gas is input into the cylinder head body 1 through the air inlet 9 and enters the air intake chamber 26. The gas flowing through the air intake chamber 26 can enter the cylinder block 3 below through the valve seat plate 2. After compression, the gas can enter the exhaust port through the exhaust chamber 27 and be discharged to the outside. In addition, the purpose of setting multiple connecting ribs 28 in the exhaust chamber 27 is to increase the heat dissipation area and avoid the gas temperature in the air compressor being too high, which would cause the parts to age easily and reduce the service life. Therefore, by increasing the connecting ribs 28, the volume of the exhaust chamber 27 can be increased, thereby increasing the surface area of ​​the exhaust chamber 27, improving the cooling efficiency of the cylinder head body 1, and reducing the exhaust temperature of the air compressor from 220°C to 190°C.

[0062] Preferably, the cylinder head body 1 is further provided with a first exhaust valve plate assembly and a second exhaust valve plate assembly inside the exhaust chamber 27, and the first exhaust valve plate assembly and the second exhaust valve plate assembly are connected to the valve seat plate 2 by bolts.

[0063] The purpose of the first and second exhaust valve assembly is that when the gas in the cylinder block 3 below the cylinder head body 1 is compressed and the pressure increases, it can impact the first and second exhaust valve assemblies after passing through the valve seat plate 2. The gas is compressed by the first and second exhaust valve assemblies to regulate the exhaust pressure, and then the first and second exhaust valve assemblies are opened to discharge the gas to the exhaust port.

[0064] The first exhaust valve plate assembly contains multiple exhaust valve plates, and the second exhaust valve plate assembly contains multiple exhaust valve plates. The multiple exhaust valve plates are stacked together and connected to the valve seat plate 2 by bolts.

[0065] Example 2

[0066] This application also relates to an air compressor based on a cylinder head, cylinder body 3, power assembly, and drive device with a water-cooled structure as described above; the bottom of the valve seat plate 2 of the cylinder head is connected to the cylinder body 3, and the power assembly is connected inside the cylinder body 3; the power assembly includes a crankshaft 4 and a piston connected to the crankshaft 4; one end of the crankshaft 4 extends outside the cylinder body 3 and is connected to the drive device; gas enters the cylinder body 3 through the cylinder head body 1 and the valve seat plate 2, and the compressed gas is discharged through the valve seat plate 2 and the cylinder head body 1.

[0067] The air compressor of this application adopts a cylinder head with a water-cooled structure as described above. The butterfly cover plate connected to the top of the original cylinder head is eliminated. Instead, a cylinder head body 1 and a valve seat plate 2 connected to the bottom of the cylinder head body 1 are used. The cooling water channel on the top of the cylinder head body 1 is eliminated. A first cooling water pipe 5 and a second cooling water pipe 6 protruding from the inner wall are connected inside the cylinder head body 1. A first water passage cavity and a second water passage cavity are formed between the cylinder head body 1 and the valve seat plate 2. The first and second water passage cavities are not directly connected, but are connected through a water-receiving cavity on the valve seat plate 2. Cooling water flows out through the first water passage cavity, the water-receiving cavity, and the second water passage cavity, thus avoiding the traditional method of opening a cooling water channel on the top of the cylinder head body 1, which requires adding a butterfly cover plate to seal the cooling water channel, resulting in lower sealing performance. This would cause water to leak between the butterfly cover and the cylinder head body 1. However, this application allows cooling water to flow through the first cooling water pipe 5 and the second cooling water pipe 6 inside the cylinder head body 1, reducing the occurrence of leakage. In addition, the cylinder head body 1 of this application is also connected to a first unloading valve 19, a second unloading valve 20, and a positioning hole 23. Gas can enter the cylinder head body 1 through the positioning hole 23 and pass through the first unloading valve 19 and the second unloading valve 20, allowing the gas to flow back and forth between the left and right cylinders of the cylinder body, realizing the idling of the air compressor, reducing energy consumption, and avoiding the cross-contamination between the gas and the cooling water inside the cylinder head body 1. Moreover, the air compressor does not need to be in working state during the unloading cycle, thereby reducing the energy consumption of the air compressor.

[0068] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0069] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0070] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A cylinder head with a water-cooled structure, characterized in that, The cylinder head includes a cylinder head body and a valve seat plate connected to the bottom of the cylinder head body; a water inlet is provided on one side wall of the cylinder head body and a water outlet is provided on the other side wall; a water inlet groove and a water outlet groove are provided inside the cylinder head body; a first cooling water pipe and a second cooling water pipe protruding from the inner wall of the cylinder head body are connected inside the cylinder head body, and the first cooling water pipe and the second cooling water pipe are symmetrically formed into an ω-shaped structure; the first cooling water pipe is connected between the water inlet and the water inlet groove, and the second cooling water pipe is connected between the water outlet and the water outlet groove; The valve seat plate has an inlet connection groove symmetrically connected to the inlet groove and an outlet connection groove symmetrically connected to the outlet groove; the inlet groove and the inlet connection groove are connected to form a first water passage cavity, and the outlet groove and the outlet connection groove are connected to form a second water passage cavity; the valve seat plate also has a water receiving cavity inside, one side of the water receiving cavity is connected to the first water passage cavity, and the other side of the water receiving cavity is connected to the second water passage cavity. Cooling water flows through the inlet, through the first cooling water pipe and the first water passage chamber, and then into the water storage chamber. It then flows through the water storage chamber, through the second water passage chamber and the second cooling water pipe, and finally out of the outlet.

2. A cylinder head with a water-cooled structure according to claim 1, characterized in that, The cylinder head body also has an unloading boss protruding from the inner wall of the cylinder head body. A first unloading hole communicating with the inside of the cylinder head body is opened on one side of the unloading boss, and a second unloading hole communicating with the inside of the cylinder head body is opened on the other side of the unloading boss.

3. A cylinder head with a water-cooled structure according to claim 2, characterized in that, The unloading boss is also provided with an unloading groove. One side of the unloading groove is connected to the first unloading hole, and the other side of the unloading groove is connected to the second unloading hole, so that the first unloading hole, the unloading groove and the second unloading hole are connected to form an unloading channel.

4. A cylinder head with a water-cooled structure according to claim 2, characterized in that, A first unloading valve is connected to the first unloading hole; a second unloading valve is connected to the second unloading hole.

5. A cylinder head with a water-cooled structure according to claim 3, characterized in that, The top of the cylinder head body is provided with a groove that extends downwards from the top surface of the cylinder head body by a predetermined distance but does not penetrate the cylinder head body. The bottom wall of the groove is connected to a positioning boss.

6. A cylinder head with a water-cooled structure according to claim 5, characterized in that, The positioning boss has a positioning hole, and a threaded plug for sealing the positioning hole is connected inside the positioning hole.

7. A cylinder head with a water-cooled structure according to claim 6, characterized in that, The positioning boss is symmetrically connected to a first vent pipe and a second vent pipe on both sides; one end of the first vent pipe is connected to the first unloading valve, and one end of the second vent pipe is connected to the second unloading valve; the other end of the first vent pipe is connected to the other end of the second vent pipe to form a V-shaped structure.

8. A cylinder head with a water-cooled structure according to claim 7, characterized in that, The first ventilator and the second ventilator are set at an acute angle.

9. A cylinder head with a water-cooled structure according to claim 1, characterized in that, The top of the cylinder head body has an air inlet communicating with the interior, and one side wall of the cylinder head body has an air outlet communicating with the interior. The interior of the cylinder head body has an air intake chamber communicating with the air inlet and an exhaust chamber communicating with the air outlet; multiple connecting ribs are connected inside the exhaust chamber.

10. An air compressor, characterized in that, The invention includes a cylinder head, cylinder block, power assembly, and drive device with a water-cooled structure as described in any one of claims 1-9; the bottom of the valve seat plate of the cylinder head is connected to the cylinder block, and the power assembly is connected inside the cylinder block; the power assembly includes a crankshaft and a piston connected to the crankshaft; one end of the crankshaft extends outside the cylinder block and is connected to the drive device; gas enters the cylinder block through the cylinder head body and the valve seat plate, and the compressed gas is discharged through the valve seat plate and the cylinder head body.

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