Air compressor cylinder head and air compressor

Abstract

The present invention relates to the technical field of air compressors, and provides an air compressor cylinder head and an air compressor. The air compressor cylinder head includes a valve seat plate, a manifold plate, and a cylinder head that are sequentially covered; a gas passage and a liquid passage are provided in the inner cavity of the manifold plate. The gas passage is provided with a plurality of gas inlets and outlets, and the liquid passage is provided with a plurality of liquid inlets and outlets. The gas inlets and outlets and the liquid inlets and outlets are distributed on the end face of the cylinder head, the side wall of the manifold plate, and the end face of the valve seat plate. By arranging the manifold plate between the valve seat plate and the cylinder head of the cylinder head and arranging the gas passage and the liquid passage on the manifold plate, the structure of the valve seat plate and the cylinder head can be simplified, and multiple complex components can be replaced by one complex component; moreover, the gas passage and the liquid passage respectively have a plurality of gas inlets and outlets and a plurality of liquid inlets and outlets distributed on the end face of the cylinder head, the side wall of the manifold plate, and the end face of the valve seat plate, realizing flexible arrangement of interfaces and being able to adapt to the interface positions of different air compressors.

Description

Technical Field

[0001] The present invention relates to the technical field of air compressors, and more particularly, to an air compressor cylinder head and an air compressor. Background Art

[0002] An air compressor can be assembled in a vehicle to provide compressed air energy for the vehicle's braking system, air suspension system, etc. The air compressor inhales air through an air inlet, pressurizes it through a compression mechanism, and then discharges it through an air outlet. During the process of compressing air, a lot of heat is generated. To avoid high temperature from reducing the equipment life and causing other adverse consequences, the air compressor is usually equipped with a cooling system.

[0003] In current air compressors, the air intake and exhaust channels and the water inlet and drain channels of the cooling system are distributed on the cylinder head cover and the valve seat plate, resulting in complex structures of the cylinder head cover and the valve seat plate; moreover, the configurations of interfaces such as the air inlet, air outlet, and the water inlet and outlet of the cooling system are single and cannot adapt to the interface positions of different air compressors.

[0004] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present invention, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0005] In view of this, the present invention provides an air compressor cylinder head and an air compressor. By arranging the gas channel and the liquid channel on the manifold plate, the structures of the valve seat plate and the cylinder head cover can be simplified, achieving the replacement of multiple complex components with one complex component; and the gas channel and the liquid channel respectively have multiple gas inlets and outlets and multiple liquid inlets and outlets distributed on the end face of the cylinder head cover, the side wall of the manifold plate, and the end face of the valve seat plate, realizing flexible arrangement of the interfaces and being able to adapt to the interface positions of different air compressors.

[0006] According to one aspect of the present invention, there is provided an air compressor cylinder head, including a valve seat plate, a manifold plate, and a cylinder head cover arranged in sequence; a gas channel and a liquid channel are provided in the inner cavity of the manifold plate, the gas channel is provided with multiple gas inlets and outlets, the liquid channel is provided with multiple liquid inlets and outlets, and the gas inlets and outlets and the liquid inlets and outlets are distributed on the end face of the cylinder head cover, the side wall of the manifold plate, and the end face of the valve seat plate.

[0007] In some embodiments, the inner cavity of the manifold plate includes two layers respectively communicating with the cylinder head cover and the valve seat plate; the gas channel and the liquid channel cover the two layers of the manifold plate, and the gas channel and the liquid channel do not communicate with each other.

[0008] In some embodiments, the gas inlet and outlet includes: at least one air inlet distributed on the end face of the cylinder head; a plurality of exhaust ports distributed on the side wall of the manifold and the end face of the cylinder head; the gas passage includes: an intake passage leading from the air inlet, through the first-layer intake cavity of the manifold, the intake air passage between the two layers of the manifold, and the second-layer intake cavity of the manifold, to the intake hole of the valve seat plate; an exhaust passage leading from the exhaust hole of the valve seat plate, through the second-layer exhaust cavity of the manifold, the exhaust air passage between the two layers of the manifold, and the first-layer exhaust cavity of the manifold, to the exhaust port; wherein, the intake cavity and the exhaust cavity of the manifold do not communicate with each other.

[0009] In some embodiments, the cylinder head further includes: an intake valve disposed on the intake end face of the valve seat plate to cover the intake hole; an exhaust valve disposed on the exhaust end face of the valve seat plate to cover the exhaust hole.

[0010] In some embodiments, the gas inlet and outlet further includes: a plurality of unloading control ports distributed on the end face of the cylinder head, the side wall of the manifold, and the end face of the valve seat plate; the gas passage further includes: an unloading passage leading from the unloading control port to the piston chamber of the manifold; wherein, the piston chamber does not communicate with the intake cavity and the exhaust cavity of the manifold.

[0011] In some embodiments, the liquid inlet and outlet includes: a plurality of liquid inlets distributed on the end face of the cylinder head and the side wall of the manifold; a plurality of liquid outlets distributed on the end face of the cylinder head and the side wall of the manifold, and the liquid outlets and the liquid inlets are distributed at both ends of one or more continuous liquid passages and are connected to the external liquid circuit of the cylinder head; the liquid passage leads from the liquid inlet, through the first liquid passage of the second layer of the manifold, the first liquid passage between the two layers of the manifold, the liquid passage of the first layer of the manifold, the second liquid passage between the two layers of the manifold, and the second liquid passage of the second layer of the manifold, to the liquid outlet.

[0012] In some embodiments, the liquid inlet and outlet further includes: a pair of crankcase liquid ports disposed on the end face of the valve seat plate, respectively communicating with both ends of the first liquid passage of the second layer of the manifold and communicating to the water channel of the crankcase of the air compressor.

[0013] In some embodiments, the cylinder head further includes: a plurality of pipeline fixing holes distributed on the side wall of the cylinder head.

[0014] In some embodiments, the pipeline fixing holes are processed into pre-cast holes.

[0015] In some embodiments, the gas inlet and outlet and the liquid inlet and outlet are initially processed into blind holes.

[0016] In some embodiments, the cylinder head further includes: two gaskets, which are respectively disposed between the cylinder head cover and the manifold plate, and between the manifold plate and the valve seat plate.

[0017] According to another aspect of the present invention, there is provided an air compressor, and an air compressor cylinder head as described in any of the above embodiments is provided on the upper cover of the crankcase of the air compressor.

[0018] The beneficial effects of the present invention compared with the prior art at least include:

[0019] In the air compressor cylinder head and the air compressor of the present invention, a manifold plate is disposed between the valve seat plate and the cylinder head cover of the cylinder head, and gas channels and liquid channels are arranged on the manifold plate, which can simplify the structures of the valve seat plate and the cylinder head cover, and realize replacing multiple complex components with one complex component, thereby simplifying the processing of the cylinder head.

[0020] The gas channels and the liquid channels respectively have a plurality of gas inlets and outlets and a plurality of liquid inlets and outlets distributed on the end face of the cylinder head cover, the side wall of the manifold plate, and the end face of the valve seat plate, realizing flexible arrangement of the interfaces, and can adapt to the interface positions of different air compressors.

[0021] In addition, the inner cavity of the manifold plate is provided with gas channels and liquid channels, so that the manifold plate has a relatively thick thickness, and further makes the interface arrangement on the side wall of the manifold plate more flexible, and is also conducive to the full distribution of the gas channels and the liquid channels in the inner cavity of the manifold plate, increasing the heat dissipation effect.

[0022] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present invention, and are used together with the specification to explain the principles of the present invention. Obviously, the following described drawings are only some embodiments of the present invention, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0024] Figure 1 Showing an exploded structural schematic diagram of the air compressor cylinder head in an embodiment of the present invention;

[0025] Figure 2 and Figure 3 Showing a structural schematic diagram of the first side in the assembled state of the air compressor cylinder head in an embodiment of the present invention;

[0026] Figure 4 Showing a structural schematic diagram of the second side in the assembled state of the air compressor cylinder head in an embodiment of the present invention;

[0027] Figure 5 and Figure 6 The structural schematic diagrams of the first side and the second side of the manifold plate in the embodiments of the present invention are shown;

[0028] Figure 7 The structural schematic diagram of the air inlet passage of the air compressor cylinder head in the embodiments of the present invention is shown;

[0029] Figure 8 The structural schematic diagram of the air exhaust passage of the air compressor cylinder head in the embodiments of the present invention is shown;

[0030] Figure 9 and Figure 10 The structural schematic diagram of the unload passage of the air compressor cylinder head in the embodiments of the present invention is shown;

[0031] Figure 11 The structural schematic diagram of the liquid passage of the air compressor cylinder head in the embodiments of the present invention is shown. Detailed implementation manners

[0032] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art.

[0033] The accompanying drawings are only schematic illustrations of the present invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. The terms "first", "second" and the like used in the detailed description do not denote any order, quantity or importance, but are only used to distinguish different components.

[0034] Figure 1 The exploded structure of the air compressor cylinder head in the embodiment is shown, Figure 2 and Figure 3 The structure of the first side of the air compressor cylinder head in the assembled state in the embodiment is shown, Figure 4 The structure of the second side of the air compressor cylinder head in the assembled state in the embodiment is shown; combined with Figures 1 to 4 As shown, the air compressor cylinder head provided by the embodiments of the present invention includes:

[0035] A valve seat plate 20, a manifold plate 40 and a cylinder head 60 arranged in sequence;

[0036] A gas passage 42 and a liquid passage 44 are arranged in the inner cavity of the manifold plate 40. The gas passage 42 is provided with a plurality of gas inlets and outlets 420, and the liquid passage 44 is provided with a plurality of liquid inlets and outlets 440. The gas inlets and outlets 420 and the liquid inlets and outlets 440 are distributed on the end face of the cylinder head 60, the side wall of the manifold plate 40 and the end face of the valve seat plate 20.

[0037] For the above air compressor cylinder head, a manifold plate 40 is provided between the valve seat plate 20 and the cylinder head 60 of the cylinder head, and the gas passage 42 and the liquid passage 44 are arranged on the manifold plate 40, which can simplify the structures of the valve seat plate 20 and the cylinder head 60, realize replacing multiple complex components with one complex component, and thus simplify the machining of the cylinder head;

[0038] The gas passage 42 and the liquid passage 44 respectively have a plurality of gas inlets and outlets 420 and a plurality of liquid inlets and outlets 440 distributed on the end face of the cylinder head 60, the side wall of the manifold plate 40 and the end face of the valve seat plate 20, realizing flexible arrangement of the interfaces and being able to adapt to the interface positions of different air compressors;

[0039] In addition, the gas passage 42 and the liquid passage 44 are arranged in the inner cavity of the manifold plate 40, making the manifold plate 40 have a relatively thick thickness. Furthermore, the interface arrangement on the side wall of the manifold plate 40 is more flexible, and it is also beneficial for the gas passage 42 and the liquid passage 44 to be fully distributed in the inner cavity of the manifold plate 40, increasing the heat dissipation effect.

[0040] Figure 5 and Figure 6 show the structures of the first surface and the second surface of the manifold plate in the embodiment; in combination with Figure 1 , Figure 5 and Figure 6 shown, in some embodiments, the inner cavity of the manifold plate 40 includes two layers respectively communicating with the cylinder head 60 and the valve seat plate 20, specifically including a first layer 40a communicating with the cylinder head 60 and a second layer 40b communicating with the valve seat plate 20; the gas passage 42 and the liquid passage 44 are distributed throughout the two layers of the manifold plate 40, and the gas passage 42 and the liquid passage 44 do not communicate with each other.

[0041] Through the first layer 40a and the second layer 40b of the manifold plate 40, on the one hand, the communication with the cylinder head 60 and the valve seat plate 20 is realized, and on the other hand, it is convenient to form non - communicating gas passage 42 and liquid passage 44 in the inner cavity of the manifold plate 40, and the gas passage 42 and the liquid passage 44 are distributed throughout the two layers of the manifold plate 40 for heat dissipation.

[0042] Figure 7 show the structure of the intake passage of the air compressor cylinder head in the embodiment, Figure 7 specifically show the intake passage in combination with the intake process (7a → 7b → 7c) of the air compressor; in combination with Figures 1 to 3 , Figures 5 to 7 shown, in some embodiments, the gas inlets and outlets 420 include: at least one intake port 420a, distributed on the end face of the cylinder head 60; the gas passage 42 includes: an intake passage, starting from the intake port 420a, passing through the first - layer intake cavity 411 of the manifold plate 40, the intake gas path 412 between the two layers of the manifold plate 40 and the second - layer intake cavity 413 of the manifold plate 40, and leading to the intake hole 414 of the valve seat plate 20.

[0043] The gas entering the cylinder head through the air inlet 420a is atmospheric air or turbocharged air; after being inhaled into the cylinder head through the air inlet 420a, the gas is transported to the cylinder through the intake passage of the cylinder head and compressed.

[0044] Figure 8 The structure of the exhaust passage of the air compressor cylinder head in the embodiment is shown. Figure 8 Specifically, the exhaust passage is shown in combination with the exhaust process (8a→8b→8c / 8c’) of the air compressor; in combination with Figures 1 to 3 、 Figure 5 、 Figure 6 and Figure 8 As shown, in some embodiments, the gas inlet and outlet 420 further includes: a plurality of exhaust ports 420b, distributed on the side wall of the manifold 40 and the end face of the cylinder head 60; an exhaust passage, starting from the exhaust hole 431 of the valve seat plate 20, passing through the second-layer exhaust cavity 432 of the manifold 40, the exhaust gas paths 433b, 433a between the two layers of the manifold 40 and the first-layer exhaust cavity 434 of the manifold 40, and leading to the exhaust port 420b.

[0045] The gas entering the cylinder is compressed into high-pressure gas, discharged through the exhaust hole 431, flows through the exhaust passage in the cylinder head to the exhaust port 420b, and finally enters the air storage tank for storage and standby after passing through the vehicle's air treatment unit and a series of pipelines.

[0046] The intake cavity and the exhaust cavity of the manifold 40 are not connected to each other to ensure that the intake process and the exhaust process of the air compressor do not affect each other.

[0047] In addition, in the cylinder head, both the air inlet 420a and the exhaust port 420b are initially processed in the form of blind holes; when the cylinder head is applied to a specific air compressor, a suitable air inlet 420a and a suitable exhaust port 420b can be machined according to the interface position of the air compressor. Through the casting blank scheme (that is, initially processing the air inlet 420a and the exhaust port 420b as blind holes), when the cylinder head is specifically applied, only the air inlet 420a and the exhaust port 420b at the corresponding positions need to be machined according to the interface position of the air compressor, and those not selected do not need to be machined, which not only realizes extremely flexible and diverse interface adaptability, but also saves mold costs and speeds up the development of new products.

[0048] In this embodiment, a total of one air inlet 420a and four exhaust ports 420b at different positions are designed, but this is not a limitation; in different embodiments, the number and distribution of the air inlet 420a / exhaust port 420b can be adjusted; in actual applications, any one air inlet 420a and one exhaust port 420b can be machined according to the overall layout requirements of the air compressor.

[0049] Further, in some embodiments, in combination with Figure 1 , Figure 7 and Figure 8 As shown, on the intake end face of the valve seat plate 20, an intake valve 110 covering the intake hole 414 is provided, and on the exhaust end face of the valve seat plate 20, an exhaust valve 120 covering the exhaust hole 431 is provided. During the intake process, the intake valve 110 opens to allow gas to smoothly enter the cylinder from the intake hole 414; during the compression process, the intake valve 110 closes to ensure the airtightness of the cylinder; during the exhaust process, the exhaust valve 120 opens to allow gas to be discharged from the exhaust hole 431.

[0050] Figure 9 and Figure 10 show the structure of the unloading passage of the air compressor cylinder head in the embodiment; in combination with Figure 2 , Figure 4 , Figure 9 and Figure 10 As shown, in some embodiments, the gas inlet and outlet 420 further includes: a plurality of unloading control ports 420c, which are distributed on the end face of the cylinder head 60, the side wall of the manifold 40, and the end face of the valve seat plate 20; the gas passage 42 further includes: an unloading passage 425, which leads from the unloading control port 420c to the piston chamber of the manifold 40.

[0051] When the pressure of the air storage tank reaches the specified value, the air compressor can stop working to save energy consumption, and this state is called the unloading state. The control signal air source for controlling the unloading of the air compressor enters the piston chamber of the manifold 40 through the unloading control port 420c and the unloading passage 425 to push the piston to move, so as to achieve unloading.

[0052] The unloading control port 420c is also initially processed in the form of a blind hole; when the cylinder head is applied to a specific air compressor, a suitable unloading control port 420c and the corresponding unloading passage 425 can be machined according to the interface position of the air compressor. Through the casting blank solution, when the cylinder head is specifically applied, only the unloading control port 420c and the unloading passage 425 at the corresponding part need to be machined according to the interface position of the air compressor, and those not selected do not need to be machined, which not only realizes extremely flexible and diverse interface adaptability, but also saves the mold cost and speeds up the R & D speed of new products.

[0053] In this embodiment, a total of five unloading control ports 420c at different positions are designed, four of which are in the cylinder head part and the other one is in the crankcase part, but not limited thereto; in different embodiments, the number and distribution of the unloading control ports 420c can be adjusted; in actual application, any one of the unloading control ports 420c can be machined according to the overall layout requirements of the air compressor.

[0054] In addition, the piston chamber of the manifold plate 40 is not in communication with the intake chamber and the exhaust chamber of the manifold plate 40 to ensure that the unloading process of the air compressor is not affected by its intake process and exhaust process.

[0055] Figure 11 The structure of the liquid channels in the air compressor cylinder head in the embodiment is shown. Figure 11 Specifically, the liquid channels are shown in combination with the cooling process (11a→11b→11c→11d→11e) of the air compressor; in combination Figures 2 to 6 , Figure 11 As shown, in some embodiments, the liquid inlet and outlet 440 includes: a plurality of liquid inlets 440a, which are distributed on the end face of the cylinder head 60 and the side wall of the manifold plate 40; a plurality of liquid outlets 440b, which are distributed on the end face of the cylinder head 60 and the side wall of the manifold plate 40, and the liquid outlets 440b and the liquid inlets 440a are distributed at both ends of one or more continuous and through liquid channels and are connected to the external liquid circuit of the cylinder head; the liquid outlets 440b and the liquid inlets 440a can be used interchangeably.

[0056] The liquid channel 44 starts from the liquid inlet 440a, passes through the first liquid path 451 of the second layer of the manifold plate 40, the first liquid path 452 between the two layers of the manifold plate 40, the liquid path 453 of the first layer of the manifold plate 40, the second liquid path 454 between the two layers of the manifold plate 40, and the second liquid path 455 of the second layer of the manifold plate 40, and leads to the liquid outlet 440a.

[0057] Engine coolant can be introduced into the liquid channel 44 for cooling; by passing through the liquid channel 44, the coolant can fully flow through the first layer 40a and the second layer 40b of the manifold plate 40, increasing the contact area with the cylinder head and enhancing the cooling and heat dissipation effect of the cylinder head.

[0058] In some embodiments, the liquid inlets 440a and the liquid outlets 440b are initially processed in the form of blind holes; when the cylinder head is applied to a specific air compressor, a pair of suitable liquid inlets 440a and liquid outlets 440b can be selected and processed according to the interface position of the air compressor. Through the casting blank solution, when the cylinder head is specifically applied, only the liquid inlets 440a and the liquid outlets 440b at the corresponding positions need to be machined according to the interface position of the air compressor, and those not selected do not need to be machined, which not only realizes extremely flexible and diverse interface adaptability, but also saves the mold cost and speeds up the development of new products.

[0059] Furthermore, in combination Figure 4 and Figure 11 As shown, in some embodiments, the liquid inlet and outlet 440 further includes: a pair of crankcase liquid ports 440c, which are arranged on the end face of the valve seat plate 20, are respectively communicated with both ends of the first liquid path 451 of the second layer of the manifold plate 40, and are communicated to the water channel of the crankcase of the air compressor.

[0060] Thus, part of the coolant that enters the first liquid path 451 in the second layer of the manifold 40 from the liquid inlet 440a can flow into the water channel of the crankcase from one crankcase liquid port 440c, cool the crankcase, and then flow back to the first liquid path 451 in the second layer of the manifold 40 from the other crankcase liquid port 440c; another part of the coolant flows along the first liquid path 451 in the second layer of the manifold 40, converges with the coolant returned from the crankcase, and then continues to flow into the first liquid path 452 between the two layers of the manifold 40.

[0061] The crankcase liquid port 440c is also initially processed in the form of a blind hole; when the cylinder head is applied to a specific air compressor, it can be decided whether to machine the crankcase liquid port 440c according to needs.

[0062] In this embodiment, two liquid inlets 440a at different positions and two liquid outlets 440b at different positions are designed in the cylinder head part, and there is also a pair of crankcase liquid ports 440c in the crankcase part, but not limited thereto; in different embodiments, the number and distribution of the liquid inlets 440a / liquid outlets 440b / crankcase liquid ports 440c can be adjusted; in actual applications, any pair of liquid inlets 440a and liquid outlets 440b / a pair of crankcase liquid ports 440c can be machined according to the overall layout requirements of the air compressor.

[0063] Further, referring to Figure 2 and Figure 3 as shown, the cylinder head is also provided with a plurality of pipeline fixing holes 460, which are distributed on the side wall of the cylinder head 60. The pipeline fixing holes 460 can be used to fix pipelines, and they are processed in the form of pre-cast holes, and can be machined according to needs in actual applications.

[0064] In this embodiment, eight pipeline fixing holes 460 at different positions are designed in the cylinder head part, but not limited thereto; in different embodiments, the number and distribution of the pipeline fixing holes 460 can be adjusted; in actual applications, appropriate pipeline fixing holes 460 can be machined according to the overall layout requirements of the air compressor.

[0065] Through the flexible gas inlet and outlet 420 and liquid inlet and outlet 440 and other interfaces, it can adapt to the interface positions of different air compressors, with strong adaptability; and the interfaces on the cylinder head adopt the general casting blank scheme, and in actual applications, only the interfaces at the corresponding parts of the cylinder head need to be machined according to the interface positions of the air compressor, which not only realizes extremely flexible and diverse interface adaptability, but also saves the mold cost and speeds up the development of new products.

[0066] Further, referring to Figure 1As shown, in some embodiments, the cylinder head further includes: two gaskets 30, which are respectively disposed between the cylinder head 60 and the manifold plate 40, and between the manifold plate 40 and the valve seat plate 20. Through the gasket 30, a sealed connection between the cylinder head 60 and the manifold plate 40, and a sealed connection between the manifold plate 40 and the valve seat plate 20 can be achieved.

[0067] Between the various components of the cylinder head, a fastening connection can be achieved through bolts 81 and nuts 82.

[0068] An embodiment of the present invention also provides an air compressor, and the upper cover of the crankcase of this air compressor is provided with an air compressor cylinder head as described in any of the above embodiments. The features and principles of the air compressor cylinder head described in any of the above embodiments can be applied to the air compressor of this embodiment; for the features and principles of the air compressor cylinder head that have been clarified, no repeated description will be given.

[0069] In summary, the air compressor cylinder head and the air compressor of the present invention have the following beneficial effects:

[0070] By disposing a manifold plate 40 between the valve seat plate 20 and the cylinder head 60 of the cylinder head, and arranging the gas passage 42 and the liquid passage 44 on the manifold plate 40, the structures of the valve seat plate 20 and the cylinder head 60 can be simplified, realizing the replacement of multiple complex components with one complex component, thereby simplifying the processing of the cylinder head;

[0071] The gas passage 42 and the liquid passage 44 respectively have a plurality of gas inlets and outlets 420 and a plurality of liquid inlets and outlets 440 distributed on the end face of the cylinder head 60, the side wall of the manifold plate 40, and the end face of the valve seat plate 20, realizing flexible arrangement of the interfaces and being able to adapt to the interface positions of different air compressors;

[0072] In addition, by arranging the gas passage 42 and the liquid passage 44 in the inner cavity of the manifold plate 40, the manifold plate 40 has a relatively thick thickness, which further makes the interface arrangement on the side wall of the manifold plate 40 more flexible, and is also conducive to the full distribution of the gas passage 42 and the liquid passage 44 in the inner cavity of the manifold plate 40, increasing the heat dissipation effect.

[0073] It should be noted that, without conflict, the features in the embodiments of the present invention and in different embodiments can be combined with each other. To achieve these combinations, some features of some parts are cast or pre-processed into blind holes or non-through states, and are only drilled through by means such as machining when needed to achieve external connection and internal fluid guidance. These features include but are not limited to the following:

[0074] 1) Manifold 40: Crankcase liquid port 440c; Internal gas constriction 433 for guiding gas flow (including exhaust gas passages 433b and 433a between two layers of the manifold 40); Internal liquid constriction 441 for guiding liquid flow; External gas interface, i.e., gas inlet / outlet 420; External liquid interface, i.e., liquid inlet / outlet 440.

[0075] 2) Cylinder head 60: External gas interface, i.e., gas inlet / outlet 420; External liquid interface, i.e., liquid inlet / outlet 440; Pipeline fixing hole 460.

[0076] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention pertains, without departing from the concept of the present invention, several simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. An air compressor cylinder head, characterized in that, it includes a valve seat plate, a manifold plate and a cylinder head arranged in sequence; a gas passage and a liquid passage are arranged in the inner cavity of the manifold plate, the gas passage is provided with a plurality of gas inlets and outlets, the liquid passage is provided with a plurality of liquid inlets and outlets, and the gas inlets and outlets and the liquid inlets and outlets are distributed on the end face of the cylinder head, the side wall of the manifold plate and the end face of the valve seat plate; the gas inlets and outlets include: at least one air inlet, distributed on the end face of the cylinder head; a plurality of exhaust outlets, distributed on the side wall of the manifold plate and the end face of the cylinder head; the inner cavity of the manifold plate includes two layers respectively communicating with the cylinder head and the valve seat plate, the gas passage runs through the two layers of the manifold plate, and the gas passage includes: an intake passage, starting from the air inlet, passing through the first-layer intake cavity of the manifold plate, the intake gas path between the two layers of the manifold plate and the second-layer intake cavity of the manifold plate, and leading to the intake hole of the valve seat plate; an exhaust passage, starting from the exhaust hole of the valve seat plate, passing through the second-layer exhaust cavity of the manifold plate, the exhaust gas path between the two layers of the manifold plate and the first-layer exhaust cavity of the manifold plate, and leading to the exhaust outlet; wherein, the intake cavity and the exhaust cavity of the manifold plate do not communicate with each other.

2. The cylinder head according to claim 1, characterized in that, the liquid passage runs through the two layers of the manifold plate, and the gas passage and the liquid passage do not communicate with each other.

3. The cylinder head according to claim 1, characterized in that, it further includes: an intake valve, arranged on the intake end face of the valve seat plate, covering the intake hole; an exhaust valve, arranged on the exhaust end face of the valve seat plate, covering the exhaust hole.

4. The cylinder head according to claim 1, characterized in that, the gas inlets and outlets further include: a plurality of unloading control ports, distributed on the end face of the cylinder head, the side wall of the manifold plate and the end face of the valve seat plate; the gas passage further includes: an unloading passage, leading from the unloading control port to the piston chamber of the manifold plate; wherein, the piston chamber does not communicate with the intake cavity and the exhaust cavity of the manifold plate.

5. The cylinder head according to claim 2, characterized in that, the liquid inlets and outlets include: a plurality of liquid inlets, distributed on the end face of the cylinder head and the side wall of the manifold plate; a plurality of liquid outlets, distributed on the end face of the cylinder head and the side wall of the manifold plate, and the liquid outlets and the liquid inlets are distributed at both ends of one or more continuous liquid passages and are connected to the external liquid circuit of the cylinder head; the liquid passage starts from the liquid inlet, passes through the first liquid path of the second layer of the manifold plate, the first liquid path between the two layers of the manifold plate, the liquid path of the first layer of the manifold plate, the second liquid path between the two layers of the manifold plate and the second liquid path of the second layer of the manifold plate, and leads to the liquid outlet.

6. The cylinder head according to claim 5, characterized in that, the liquid inlets and outlets further include: a pair of crankcase liquid ports, arranged on the end face of the valve seat plate, respectively communicating with both ends of the first liquid path of the second layer of the manifold plate and communicating with the water channel of the crankcase of the air compressor.

7. The cylinder head according to claim 1, characterized in that, it further includes: a plurality of pipeline fixing holes, distributed on the side wall of the cylinder head.

8. The cylinder head according to claim 7, wherein, the pipeline fixing holes are machined as pre-cast holes.

9. The cylinder head according to any one of claims 1, 4 - 6, wherein, the gas inlet / outlet and the liquid inlet / outlet are initially machined as blind holes.

10. The cylinder head according to claim 1, wherein, it further comprises: two gaskets, respectively arranged between the cylinder head cover and the manifold plate, and between the manifold plate and the valve seat plate.

11. An air compressor, wherein, the upper cover of the crankcase of the air compressor is provided with the air compressor cylinder head according to any one of claims 1 - 10.

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