WO2024040688A1 - Cylinder body, air compressor, and commercial vehicle - Google Patents

Abstract

A cylinder body, an air compressor, and a commercial vehicle. The cylinder body (1) is machined to have a first mounting surface (101) and a second mounting surface (102) which are parallel to one another and spaced apart; the cylinder body (1) is machined to have with a compression chamber (103); a part of the cylinder body (1) is machined into a valve plate (104), and the valve plate (104) covers the compression chamber (103). Machining a part of the cylinder body into a valve plate reduces cylinder body material costs, mold costs and machining process costs, thereby reducing the machining costs of the air compressor.

Description

Cylinders, air compressors and commercial vehicles Technical field

The present invention relates to the field of compressors, specifically cylinder blocks, air compressors and commercial vehicles.

Background technique

In the prior art, a patent document titled Micro Air Compressor with application number 201320739925.9 is provided; in this patent document, according to its specific structure and working principle, it can be known that the micro air compressor is actually a One stage air compressor.

In the prior art, a patent document titled a vertical air compressor with application number 201721525161.8 is provided; in this patent document, a two-stage air compressor is specifically provided.

In the two patent documents mentioned above, cylinder body, cylinder head and valve plate structures are respectively adopted. The valve plate is limited between the cylinder body and the cylinder head; in the gap between the cylinder body and the valve plate, and in the valve plate Seals are also provided in the gaps between the cylinder head and the cylinder head to prevent compressed air from leaking. The cylinder block, cylinder head and valve plate can be connected by the same set of bolts, where the bolts penetrate the cylinder block, cylinder head and valve plate respectively; alternatively, the cylinder head and valve plate can be connected by the first set of bolts, and by A second set of bolts connects the cylinder head and valve plate combination to the cylinder block.

It can be known from the two patent documents mentioned above that air compressors in the prior art have many parts, resulting in relatively high manufacturing costs of air compressors; therefore, how to reduce the cost of air compressors has become a technology to be solved question.

Contents of the invention

In order to solve the technical problem of how to reduce the cost of an air compressor in the prior art, the present invention provides a cylinder block, an air compressor and a commercial vehicle.

In order to achieve the above objects, the technical solutions adopted by the present invention are:

According to one aspect of the present invention, a cylinder is provided, the cylinder is processed with a first mounting surface and a second mounting surface that are parallel to each other and spaced apart;

The direction from the second mounting surface to the first mounting surface is defined as a first direction, the direction from the first mounting surface to the second mounting surface is defined as a second direction, the first direction and the The second direction is opposite;

Along the first direction, the cylinder is processed with a compression chamber;

A portion of the cylinder is processed into a valve plate, wherein the valve plate covers the compression chamber.

Further, the valve plate has two plate surfaces, one of the plate surfaces viewed along the second direction is defined as the first plate surface, and one of the plate surfaces viewed along the first direction is defined as the first plate surface. The other said board is defined as a second board;

The first board surface and the second board surface are respectively located between the first mounting surface and the second mounting surface;

Alternatively, the first board surface is located outside the first mounting surface and the second mounting surface, and the second board surface is located between the first mounting surface and the second mounting surface;

Alternatively, the first board surface and the second board surface are respectively located outside the first mounting surface and the second mounting surface.

Further, a raised portion is processed on the valve plate;

The protrusion is used to separate the first plate surface into a first cavity surface and a second cavity surface, and the contours of the first cavity surface and the second cavity surface are isolated from each other.

Further, the raised portion is specifically an annular raised portion;

The annular protrusion has an outer ring profile and an inner ring profile, the first cavity surface is located outside the outer ring profile, and the second cavity surface is located inside the inner ring profile.

Further, the valve plate is processed with a plurality of through holes for gas circulation, wherein the through holes in the first part are defined as low-pressure exhaust holes, and the through holes in the second part are defined as high-pressure exhaust holes. hole, wherein said through hole of the third part is defined as a high-pressure air inlet hole;

The number of compression chambers is 2;

One of the compression chambers is defined as a low-pressure compression chamber, and all of the low-pressure exhaust holes are respectively connected with the low-pressure compression chamber, wherein any of the low-pressure exhaust holes is located on the surface of the first chamber;

The other of the compression chambers is defined as a high-pressure compression chamber, all of the high-pressure air inlets are connected to the high-pressure compression chamber, and all of the high-pressure exhaust holes are connected to the high-pressure compression chamber, where, Any one of the high-pressure air inlet holes is located on the surface of the first cavity, and any one of the high-pressure exhaust holes is located on the surface of the second cavity.

Further, the cylinder is processed with an air outlet channel;

The mouth of one end of the air outlet channel is defined as an air inlet, and the air inlet is located on the inner annular surface of the annular protrusion;

The mouth of the other end of the air outlet passage is defined as an air outlet, and the air outlet is located on the outer surface of the cylinder.

Further, the cylinder is processed with a buffer cavity;

The buffer chamber communicates with the air outlet channel.

Further, a first reinforcing rib is processed on the surface of the first cavity;

The surface of the cylinder body is processed with second reinforcing ribs.

According to one aspect of the present invention, an air compressor is provided, including the aforementioned cylinder.

According to one aspect of the present invention, a commercial vehicle is provided, including the aforementioned air compressor.

The above technical solution has the following advantages or beneficial effects:

In the cylinder provided by the present invention, by processing part of the cylinder into a valve plate, the material cost of the cylinder is lower than the sum of the material costs of the cylinder and the valve plate in the prior art, and the mold cost of the cylinder is lower than that of the prior art. The sum of the mold cost of the cylinder and the valve plate and the processing cost of the cylinder are lower than the sum of the processing cost of the cylinder and the valve plate of the prior art. Therefore, the overall cost of the cylinder of this embodiment is low. Compared with the overall cost of the combination of the cylinder and the valve plate in the prior art, when the cylinder of this embodiment is actually used in an air compressor, the purpose of reducing the cost of the air compressor is achieved.

Description of drawings

Figure 1 is a schematic structural diagram of a cylinder provided in Embodiment 1 or 2 of the present invention;

Figure 2 is a schematic structural diagram of the cylinder provided in Embodiment 1 or 2 of the present invention;

Figure 3 is a cross-sectional view of the cylinder provided in Embodiment 1 or 2 of the present invention;

Figure 4 is a top view of the cylinder provided by Embodiment 1 or 2 of the present invention;

Figure 5 is a cross-sectional view of the cylinder provided by Embodiment 1 or 2 of the present invention;

Figure 6 is a cross-sectional view of the cylinder provided in Embodiment 1 or 2 of the present invention;

Figure 7 is a cross-sectional view of the cylinder provided in Embodiment 1 or 2 of the present invention;

Figure 8 is a schematic structural diagram of the air compressor provided in Embodiment 2 of the present invention;

Figure 9 is a cross-sectional view of the air compressor provided in Embodiment 2 of the present invention;

Figure 10 is a partial cross-sectional view of the air compressor provided in Embodiment 2 of the present invention;

Figure 11 is a schematic structural diagram of the cylinder head provided in Embodiment 2 of the present invention;

Figure 12 is a schematic structural diagram of a cylinder head provided in Embodiment 2 of the present invention.

Detailed ways

Example 1:

In this embodiment, referring to Figure 1 or Figure 2, a cylinder 1 is provided. The cylinder 1 is processed with a first mounting surface 101 and a second mounting surface 102 that are parallel to each other and spaced apart;

The direction from the second mounting surface 102 to the first mounting surface 101 is defined as the first direction A, and the direction from the first mounting surface 101 to the second mounting surface 102 is defined as the second direction B. The first direction A and the second direction B is the opposite;

Along the first direction A, the cylinder 1 is processed with a compression chamber 103;

A portion of the cylinder 1 is processed into a valve plate 104 , wherein the valve plate 104 covers the compression chamber 103 .

Before the cylinder 1 provided in this embodiment is actually used in an air compressor, at least a plurality of valve plates need to be provided on the valve plate 104 of the cylinder 1 to control the air intake or exhaust of the compression chamber 103 Effect; and, at least a valve cover needs to be provided on the first mounting surface 101, so that the compressed gas discharged from the compression chamber 103 can be restricted between the valve cover and the valve plate 104 of the cylinder 1; the valve cover and the cylinder 1 A sealing gasket should also be provided to prevent compressed gas from leaking from the gap between the valve cover and the valve plate 104 of the cylinder 1 . In addition, the second mounting surface 102 of the cylinder 1 in this embodiment is used to contact the crankcase, so that the cylinder 1 can be installed on the crankcase.

Referring to Figure 2, along the first direction A, a compression chamber 103 is processed on the cylinder 1; one end of the compression chamber 103 forms a mouth, which is exposed to the second mounting surface 102, and is used to be connected by the piston. The rod assembly passes through, so that the piston in the piston connecting rod assembly can move or stay in the compression chamber 103; the other end of the compression chamber 103 is covered by the valve plate 104, so that during the reciprocating motion of the aforementioned piston assembly, the compression chamber Negative pressure or positive pressure can be generated in 103, where the negative pressure is used to suck in the air or low-pressure compressed air outside the compression chamber 103, and the positive pressure is used to pressurize the air or low-pressure compressed air inside the compression chamber 103 to form a high pressure. Compressed air.

Referring to Figure 2, in the cylinder 1 of this embodiment, along the first direction A, one side of the valve plate 104 can be observed from the mouth of the compression chamber 103; along the second direction B, one's line of sight can One of the other sides of the valve plate 104 is visible.

The number of compression chambers 103 is set according to design requirements.

For example, the number of compression chambers 103 can be set to one, as long as the pressure of the compressed air discharged from the compression chamber 103 can meet the preset exhaust pressure in the design requirements.

For example: the number of compression chambers 103 can be set to 2, 3 or 4. In the process of air changing from atmospheric pressure to low-pressure compressed air, and low-pressure compressed air to high-pressure compressed air, the front compression chamber 103 is usually The following compression chamber 103 is a low-pressure compression chamber and is usually a high-pressure compression chamber. This is common knowledge known to those skilled in the art and will not be described again here.

In this embodiment, the number of compression chambers 103 is preferably set to two (see Figure 2). It should be understood that in the following, unless otherwise stated, the number of compression chambers 103 of the cylinder 1 in this embodiment should be two by default.

In this embodiment, see Figure 1 or Figure 2, the valve plate 104 is actually a part of the cylinder 1. To put it another way, the cylinder 1 and the valve plate 104 are an integrated structure. The blank of the cylinder 1 is mechanically Directly processed.

In the existing technology, for example, there is a patent document named micro air compressor with application number 201320739925.9, or a patent document named a vertical air compressor with application number 201721525161.8. The cylinder and valve plate respectively adopt Made of independent processing technology, the cylinder body and valve plate are in a separate state, and an additional sealing gasket is required between the cylinder body and valve plate.

In this embodiment, a part of the cylinder 1 is processed into the valve plate 104. Compared with the prior art, the processing technology of the cylinder 1 in this embodiment is neither the same as the valve plate processing technology in the prior art, nor the same as the valve plate processing technology in the prior art. The processing technology of the cylinder block in the prior art; in addition, the overall structure of the cylinder block 1 in this embodiment is similar to the structure of the combination of the cylinder block and the valve plate in the prior art, but not the same, because this embodiment The cylinder 1 and the valve plate 104 are inseparable from each other, while the combination of the cylinder and the valve plate in the prior art can be separated from each other.

In the aforementioned prior art, in order to realize the assembly of the valve plate and the cylinder body to meet the design requirements, under the condition of ensuring the processing accuracy, it is necessary to process at least a valve plate positioning surface for contacting the cylinder body on the valve plate, and, on the cylinder A cylinder positioning surface for contacting the valve plate is machined on the body. The valve plate positioning surface and the cylinder positioning surface need to maintain preset tolerances respectively.

In this embodiment, since the valve plate 104 is actually a part of the cylinder 1, there is no need to process the 'existing cylinder positioning surface' on the cylinder 1 of this embodiment, and there is no need to additionally set up the 'existing cylinder positioning surface'. technology's valve plate', thereby avoiding the step of processing the valve plate positioning surface on the 'existing technology's valve plate'. Compared with the existing technology, it is obvious that the cylinder 1 of this embodiment requires fewer processing steps, and thus this implementation The processing cost of the cylinder 1 in the example is lower.

In the aforementioned prior art, the cylinder blank and the valve plate blank must meet the preset machining allowance. When the cylinder blank is processed, a machining allowance needs to be left at the aforementioned 'cylinder positioning surface', and the valve plate When the blank is processed, a machining allowance needs to be left at the aforementioned 'valve plate positioning surface', which makes the existing cylinder blank and valve plate blank, materials used to meet the machining allowance requirements (usually There are too many metals or alloys, such as cast iron or aluminum alloys, etc.), which makes the material cost of the cylinder blank and the valve plate blank in the prior art relatively high. In addition, in the prior art, the corresponding molds for manufacturing the cylinder blank and the manufacturing For valve plate blank molds, the cost of the two molds is relatively high.

In this embodiment, since the valve plate 104 is actually a part of the cylinder 1, only one cylinder blank needs to be manufactured. In the cylinder 1 of this embodiment, the cylinder blank avoids the installation of the cylinder blank in the prior art. The cylinder blank has a machining allowance at the positioning surface of the cylinder, and since in this embodiment, there is no need to independently manufacture the valve plate 104, thereby avoiding the need to set the valve plate blank on the valve plate in the prior art. There is a machining allowance at the positioning surface. Therefore, the material cost of the cylinder 1 in this embodiment is lower than the sum of the material costs of the cylinder and the valve plate in the prior art, thereby reducing the economic cost of the cylinder 1 itself. In addition, in this embodiment, because only one mold is used to manufacture the cylinder blank, the mold cost of the cylinder 1 in this embodiment is lower than the mold cost of the cylinder blank and the valve plate blank in the prior art. The sum of the mold costs is achieved, thereby achieving the purpose of reducing the mold cost of cylinder 1.

In the aforementioned prior art, a sealing gasket needs to be provided between the cylinder and the valve plate to prevent compressed air from leaking from the gap between the cylinder and the valve plate.

In this embodiment, since the valve plate 104 is actually a part of the cylinder 1, there is no need to adopt the technical solution of 'a sealing gasket is provided between the cylinder and the valve plate' in the prior art. That is, the cylinder of this embodiment Compared with the combination of the cylinder body and the valve plate in the prior art, the body 1 at least saves the economic cost of the sealing gasket.

Therefore, the cylinder 1 provided in this embodiment is processed by processing a part of the cylinder 1 into the valve plate 104, so that the material cost of the cylinder 1 is lower than the sum of the material costs of the cylinder and the valve plate in the prior art, and the cylinder The mold cost of the body 1 is lower than the sum of the mold costs of the cylinder body and the valve plate in the prior art, and the processing technology cost of the cylinder 1 is lower than the sum of the processing technology costs of the cylinder body and the valve plate in the prior art. Therefore, this invention The overall cost of the cylinder 1 of the embodiment is lower than that of the combination of the cylinder and the valve plate in the prior art. When the cylinder 1 of the embodiment is actually used in an air compressor, the air compressor can be reduced in cost. cost purpose.

Further, referring to FIGS. 5 to 7 , the valve plate 104 has two plate surfaces, one of which is defined as the first plate surface C when viewed along the second direction B, and is defined as the first plate surface C when viewed along the first direction A. The other board is defined as the second board D;

Referring to Figure 5, the first board surface C and the second board surface D are respectively located between the first mounting surface 101 and the second mounting surface 102;

Or, referring to Figure 6, the first board surface C is located outside the first mounting surface 101 and the second mounting surface 102, and the second board surface D is located between the first mounting surface 101 and the second mounting surface 102;

Or, referring to Figure 7, the first board surface C and the second board surface D are located outside the first mounting surface 101 and the second mounting surface 102 respectively.

For the convenience of description, 'the first board surface C and the second board surface D are respectively located between the first mounting surface 101 and the second mounting surface 102' is defined as the first solution; 'the first board surface C is located between the first mounting surface 101 and the second mounting surface 102' Outside the surface 101 and the second mounting surface 102, the second board surface D is located between the first mounting surface 101 and the second mounting surface 102' is defined as the second solution; define 'the first board surface C and the second board surface D' Being located outside the first mounting surface 101 and the second mounting surface 102 respectively are defined as the third solution.

In the cylinder 1 in this embodiment, the first solution is preferably adopted. The advantage of the first solution is that the groove structure can be directly processed on the cylinder block 1, thereby reducing the processing technology cost, material cost and mold cost of the cylinder head. Among them, when the cylinder head cover fits the cylinder block 1 of this embodiment, When the first mounting surface 101 is used, a cavity structure for compressed air circulation is formed between the cylinder head and the groove structure.

It should be understood that in one of the other embodiments, the second and third solutions may also be adopted. The processing technology cost, material cost and mold cost of the cylinder head corresponding to the second plan and the third plan respectively are higher than the processing technology cost, material cost and mold cost of the cylinder head corresponding to the first plan; the second plan and the third plan respectively The processing technology cost, material cost and mold cost of the cylinder head corresponding to the three options respectively are close to or equal to the processing technology cost, material cost and mold cost of the cylinder head in the prior art; this is because, in the second option and In the third solution, the 'groove structure in the first solution' cannot be directly processed on the cylinder block 1, so only the cylinder head structure in the prior art can be used, in which the cylinder head in the prior art includes the 'groove structure' ; When the cylinder head cover is closed on the cylinder 1 of the second or third solution, a formation is formed between the 'groove structure' of the cylinder head and the first plate surface C of the valve plate 104 of the cylinder 1 for compressed air circulation. cavity structure.

Further, referring to Figures 1 to 7, the valve plate 104 is processed with a protrusion 105;

The raised portion 105 is used to divide the first plate surface C into a first cavity surface C1 and a second cavity surface C2, and the contours of the first cavity surface C1 and the second cavity surface C2 are isolated from each other.

The raised portion 105 is provided on the first plate surface C of the valve plate 104; according to the aforementioned first to third solutions, the raised portion 105 in this embodiment forms the following two structures:

The first structure, see Figure 5, the raised portion 105 is used in the aforementioned first solution, the raised portion 105 is actually located within the outline of the 'trough structure' of the cylinder 1, and the raised portion 105 is limited to the first Between the mounting surface 101 and the second mounting surface 102, the surface plane in which the protruding portion 105 is observed along the second direction B is defined as the top surface, and the top surface and the first mounting surface 101 of the cylinder 1 can be Designed to be coplanar; the first plate surface C is actually the groove bottom surface of the 'trough structure'; the raised portion 105 separates the first plate surface C into a first cavity surface C1 and a second cavity surface C2; when the cylinder head cover is closed When the cylinder block 1 in the first solution is installed, a low-pressure exhaust chamber is formed between the cylinder head and the first cavity surface C1, and a high-pressure exhaust chamber is formed between the cylinder head and the second cavity surface C2, where the low-pressure exhaust cavity The function is: after the low-pressure compressed air in the low-pressure compression chamber is injected into the low-pressure exhaust chamber, the low-pressure exhaust chamber restricts the flow of low-pressure compressed air to the high-pressure compression chamber. The function of the high-pressure exhaust chamber is: After the compressed air is injected into the high-pressure exhaust chamber, the high-pressure exhaust chamber restricts the flow of high-pressure compressed air to the outside of the cylinder 1 . When the cylinder 1 of the first embodiment having the raised portion 105 is actually applied to an air compressor, the raised portion 105 as a whole plays a role in preventing the mixing of low-pressure compressed air and high-pressure compressed air.

In the second structure, see Figure 6 or Figure 7, the protruding portion 105 is applied to the aforementioned second or third solution. The protruding portion can be observed outside the first mounting surface 101 and the second mounting surface 102 of the cylinder 1. The raised portion 105; wherein, the surface plane of the raised portion 105 observed along the second direction B is defined as the top surface, and the top surface is located outside the first mounting surface 101 and the second mounting surface 102; the first plate surface C It is actually the covering surface used to cover the 'trough structure' of the cylinder head; the raised portion 105 separates the first plate surface C into the first cavity surface C1 and the second cavity surface C2; when the cylinder head cover is closed, it has the raised portion 105 When the cylinder head 1 in the second solution is placed on the cylinder block 1, or when the cylinder head cover is placed on the cylinder block 1 in the third solution having a raised portion 105, the raised portion 105 is accommodated by the 'groove structure' of the cylinder cover, and the raised portion 105 is accommodated in the cylinder head. The surface is located within the outline of the 'trough structure' of the cylinder head. A low-pressure exhaust chamber is formed between the first cavity surface C1 and the cylinder head, and a high-pressure exhaust cavity is formed between the second cavity surface C2 and the cylinder head; the low-pressure exhaust cavity here The functions and effects of the air chamber and the high-pressure exhaust chamber are respectively the same as the functions and effects of the low-pressure exhaust chamber and the high-pressure exhaust chamber in the aforementioned first structure, and will not be described again here. When the cylinder 1 of the second aspect or the third aspect having the raised portion 105 is actually applied to an air compressor, the raised portion 105 as a whole plays a role in preventing the mixing of low-pressure compressed air and high-pressure compressed air.

Furthermore, in the aforementioned technical solution, when the pressure difference between the high-pressure compressed air and the atmosphere is relatively large, although a sealing gasket is provided in the gap between the cylinder block 1 and the cylinder head to form a seal, high pressure may still occur. The phenomenon of compressed air leaking into the atmosphere through the gap between the cylinder block 1 and the cylinder head.

In this embodiment, the technical idea of reducing the pressure difference between high-pressure compressed air and the atmosphere is adopted to ensure the sealing effect of the gasket and reduce or avoid the leakage of high-pressure compressed air into the atmosphere.

Specifically, referring to Figure 1 or Figure 4, the raised portion 105 is specifically an annular raised portion;

The annular protrusion has an outer ring profile and an inner ring profile, the first cavity surface C1 is located outside the outer ring profile, and the second cavity surface C2 is located inside the inner ring profile.

After the protrusion 105 is provided as an annular protrusion, the aforementioned first cavity surface C1 takes on the shape of a torus as a whole, and the outline of the second cavity surface C2 is located inside the first cavity surface C1; when the cylinder head When the cover is closed on the cylinder 1 of this embodiment with an annular convex portion, an annular low-pressure exhaust chamber is formed between the first cavity surface C1 and the cylinder head, and between the second cavity surface C2 and the cylinder head A high-pressure exhaust chamber is formed between them, wherein the overall contour of the high-pressure exhaust chamber is surrounded by the overall contour of the annular low-pressure exhaust chamber.

When the cylinder 1 with the annular protrusion is actually used in an air compressor, when the low-pressure compressed air in the annular low-pressure compression chamber flows to the high-pressure compression chamber, the annular protrusion can be separated from both sides. Bypassing the annular protrusion, it is sucked into the high-pressure compression chamber; the high-pressure compressed air is discharged from the high-pressure compression chamber and reaches the high-pressure exhaust chamber; the high-pressure compressed air in the high-pressure exhaust chamber is blocked by the annular protrusion, causing high-pressure compression The air is surrounded by low-pressure compressed air in an annular low-pressure exhaust chamber.

When the cylinder 1 with annular protrusions is actually used in an air compressor, a cylinder head is provided on the cylinder 1, and a first sealing gasket and a second sealing gasket are provided between the cylinder head and the cylinder 1, wherein the One sealing gasket is used to seal the gap between the edge of the cylinder block 1 (refer to the aforementioned first mounting surface 101) and the cylinder head, and the second sealing gasket is used to seal the gap between the annular protrusion and the cylinder head. ; If the pressure difference between the high-pressure compressed air and the atmosphere is too large, and the high-pressure compressed air leaks from the gap between the annular bulge and the cylinder head, the leaked high-pressure compressed air can only reach the annular low-pressure exhaust. within the air cavity and cannot reach the atmosphere.

When the high-pressure compressed air leaks into the annular low-pressure exhaust chamber, the low-pressure compressed air in the annular low-pressure exhaust chamber mixes with the leaked high-pressure compressed air, so that the mixed compressed air in the annular low-pressure exhaust chamber The air pressure is greater than the air pressure of the original low-pressure compressed air and less than the air pressure of the leaked high-pressure compressed air; from another perspective, the annular low-pressure exhaust chamber becomes the 'buffer chamber' between the high-pressure exhaust chamber and the atmosphere. Since the annular low-pressure exhaust chamber reduces the pressure difference between the leaked high-pressure compressed air and the atmosphere, leakage of compressed air to the atmosphere is reduced or avoided.

It should be understood that, in addition to the aforementioned technical solution of arranging the protruding portion 105 (including annular protruding portion) on the valve plate 104, in other embodiments, the protruding portion (including annular protruding portion) can also be provided on the valve plate 104. part) is provided on the cylinder head, correspondingly, the valve plate 104 of the cylinder 1 is provided with a sealing surface matching the 'protrusion (including annular protrusion)'; the protrusions in other embodiments The structures of the protruding portion 105 and the protruding portion 105 in this embodiment can be set to the same structure and can achieve the same technical effect. The only difference is the location.

Furthermore, in the aforementioned solution with an annular protrusion, in order to achieve the effect of compressed air entering and exiting the compression chamber 103, the cylinder 1 should also be provided with a through hole 106 for the circulation of compressed air.

Specifically, referring to Figure 1 or Figure 4, the valve plate 104 is processed with a plurality of through holes 106 for gas circulation, wherein the first part of the through holes 106 is defined as a low-pressure exhaust hole, and the second part of the through holes 106 is defined as a low-pressure exhaust hole. It is defined as a high-pressure exhaust hole, in which the through hole 106 of the third part is defined as a high-pressure air inlet hole;

The number of compression chambers 103 is 2;

One of the compression chambers 103 is defined as a low-pressure compression chamber, and all low-pressure exhaust holes are respectively connected with the low-pressure compression chamber, where any low-pressure exhaust hole is located on the first cavity surface C1;

The other compression chamber 103 is defined as a high-pressure compression chamber. All the high-pressure air inlets are connected to the high-pressure compression chamber, and all the high-pressure exhaust holes are connected to the high-pressure compression chamber. Each high-pressure air inlet is located at the first On the first cavity surface C1, any high-pressure exhaust hole is located on the second cavity surface C2.

Among them, the low-pressure compressed air in the low-pressure compression chamber is discharged into the low-pressure exhaust chamber through the low-pressure exhaust hole; the low-pressure compressed air in the low-pressure exhaust chamber is sucked into the high-pressure compression chamber through the high-pressure air inlet; the high-pressure compression chamber The high-pressure compressed air is discharged into the high-pressure exhaust chamber through the high-pressure exhaust hole.

Furthermore, in the aforementioned solution with an annular protrusion, in order to discharge the high-pressure compressed air to the outside of the cylinder 1 , the following solution is preferably adopted.

Referring to Figure 1 or Figure 3, the cylinder 1 is processed with an air outlet passage 107;

The mouth of one end of the air outlet channel 107 is defined as the air inlet 108, and the air inlet 108 is located on the inner annular surface of the annular protrusion;

The mouth of the other end of the air outlet passage 107 is defined as an air outlet 109 , and the air outlet 109 is located on the outer surface of the cylinder 1 .

The outline of the air outlet passage 107 and the aforementioned outline of the compression chamber 103 are set to be isolated from each other, thereby improving the yield rate of the cylinder 1 of this embodiment.

Specifically, the cross-sections of the low-pressure compression chamber and the high-pressure compression chamber are circular respectively, and the position of the air outlet passage 107 is located on the cylinder 1 between the low-pressure compression chamber and the high-pressure compression chamber; see Figure 3, the air outlet passage 107 is The position is preferably located at the lower part of the valve plate 104 so that the air outlet channel 107 is close to the first mounting surface 101 and away from the second mounting surface 102. At the same time, the air outlet channel 107 is preferably configured as a linearly extending channel so that the air outlet channel 107 can be processed. The processing cost is relatively low. The air inlet 108 of the air outlet channel 107 is located on the inner wall of the annular bulge, so that the air outlet channel 107 communicates with the high-pressure exhaust chamber, and then high-pressure compressed air can be injected into the air outlet channel 107; the air outlet 109 of the air outlet channel 107 is located on the cylinder body 1, so that the high-pressure compressed air in the air outlet passage 107 can be discharged to the outside of the cylinder 1.

Preferably, in this embodiment, the number of air outlet channels 107 is set to 2; the structure of the first air outlet channel 107 is the same or similar to the structure of the second air outlet channel 107, and the first air outlet channel 107 and the second air outlet channel 107 are The channel 107 forms an air inlet 108 with the inner wall of the annular protrusion, and the first air outlet channel 107 and the second air outlet channel 107 form an air outlet 109 with the outer surface of the cylinder 1 respectively; The two air outlet channels 107 only have different directions.

It should be understood that in other embodiments, the air outlet channel 107 can also be processed into a zigzag shape, for example: along the horizontal direction, a first horizontal channel is processed on the cylinder 1 below the valve plate 104; along the vertical direction, a first horizontal channel is processed on the cylinder 1 below the valve plate 104; In the vertical direction, a first vertical channel is processed on the cylinder 1 below the valve plate 104; along the horizontal direction, a second horizontal channel is processed on the cylinder 1 above the second mounting surface 102; The straight channel is connected to the first horizontal channel and the second horizontal channel respectively, so that the zigzag air outlet channel 107 can be realized; in addition, the process hole of the first horizontal channel (located on the outer surface of the side of the cylinder 1) and the processing of the third horizontal channel are processed. The process holes of a vertical channel (located on the outer surface of the bottom of the cylinder 1) can be blocked with plugs respectively.

It should be understood that, in addition to the aforementioned air outlet passage 107 being processed on the cylinder block 1 , in other embodiments, the cylinder head may also be provided with an air outlet hole. When the cylinder head is disposed on the cylinder body 1 , The air hole is connected to the aforementioned high-pressure exhaust chamber. Although this way of arranging the air outlet is relatively simple, when the cylinder head with the air outlet and the aforementioned cylinder 1 are used together on an air compressor, if a pipeline is connected to the air outlet, the height of the pipeline will make the air compressor As the height increases, the extension direction of the pipeline may be limited by the actual installation space of the air compressor (such as the installation space of the air compressor on a commercial vehicle) and it is necessary to set elbows or directly bend the pipeline, resulting in air compression. The actual installation space of the machine will have to change.

Further, referring to Figure 3, the cylinder 1 is processed with a buffer cavity 110;

The buffer chamber 110 communicates with the air outlet channel 107 .

In the prior art, some air compressors are usually equipped with a buffer tank for buffering pressure fluctuations of high-pressure compressed air discharged from the air compressor.

In this embodiment, a buffer chamber 110 is processed on the cylinder 1 , and its purpose is to replace the buffer tank in the prior art, so that the buffer chamber 110 can buffer the pressure fluctuation of the high-pressure compressed air discharged from the cylinder 1 .

In this embodiment, the buffer chamber 110 is connected to the aforementioned air outlet channel 107 , so that when the high-pressure compressed air is discharged from the cylinder 1 through the air outlet channel 107 , the high-pressure compressed air can be injected into the buffer chamber 110 .

Since the air compressor uses a piston to compress air, the reciprocating motion of the piston relative to the compression chamber 103 of the cylinder 1 creates pressure fluctuations in the high-pressure compressed air.

In the high-pressure compression chamber, during each cycle of the piston's reciprocating motion, when the piston moves from top dead center to bottom dead center, the high-pressure compression chamber forms negative pressure and sucks in low-pressure compressed air, and the piston moves from bottom dead center to top dead center. During the process, the high-pressure compression chamber forms a positive pressure to compress the low-pressure compressed air into high-pressure compressed air, and the high-pressure compressed air is discharged from the high-pressure compression chamber.

In the high-pressure compression chamber, between two adjacent cycles of the piston's reciprocating motion, between the process of discharging high-pressure compressed air in the previous cycle and the process of discharging high-pressure compressed air in the next cycle, there is a suction low-pressure compression in the latter cycle. The time interval of the air thus produces pressure fluctuations in the discharge of high-pressure compressed air.

The term 'pressure fluctuation' should be understood as: the pressure difference between the highest pressure and the lowest pressure of the compressed air discharged from cylinder 1; if the pressure of the compressed air discharged from cylinder 1 is plotted as a pressure curve in a two-dimensional coordinate system, The shape of the pressure curve is approximately or equal to a sinusoidal curve or a cosine curve, where the peak represents the highest pressure of the compressed air discharged from the cylinder 1 and the trough represents the lowest pressure of the compressed air discharged from the cylinder 1 .

The compressed air of the previous cycle and the high-pressure compressed air of the subsequent cycle are mixed in the buffer chamber 110. The pressure of the mixed compressed air is less than the pressure of the high-pressure compressed air discharged from the high-pressure compression chamber, thereby balancing the pressure of the discharge cylinder 1. The pressure of compressed air.

In the solution where the cylinder 1 does not have the buffer chamber 110, the highest pressure of the compressed air discharged from the cylinder 1 is equal to the pressure of the high-pressure compressed air discharged from the high-pressure compression chamber; in the exhaust pressure curve corresponding to this solution, the highest The pressure difference between the pressure and the lowest pressure is relatively large;

In the solution where the cylinder 1 has a buffer chamber 110, the maximum pressure of the compressed air discharged from the cylinder 1 is less than the pressure of the high-pressure compressed air discharged from the high-pressure compression chamber; in the exhaust pressure curve corresponding to this solution, the maximum pressure and The pressure difference of the lowest pressure is relatively small; compared with the aforementioned 'scheme in which the cylinder 1 does not have the buffer chamber 110', the pressure fluctuation of the compressed air discharged from the cylinder 1 is gentler; in addition, when the pressure fluctuation is gentle , the exhaust noise of cylinder 1 is lower.

Further, referring to Figure 3, during actual processing of the aforementioned buffer chamber 110, the buffer chamber 110 is preferably located between the two compression chambers 103 and close to the outer surface of the cylinder 1; on this basis, the cylinder 1 During the processing, the buffer cavity 110 is preferably processed along the first direction A, so that the extension direction of the buffer cavity 110 is linear, and at the same time, the connection between the aforementioned air outlet channel 107 and the buffer cavity 110 has a three-way structure; After the buffer chamber 110 is processed, a process port E is left on the surface of the cylinder 1. The process port E can be blocked by a sealing component. The sealing component includes but is not limited to: plugging, welding sealing, or thread structure and thread glue sealing.

In the above-mentioned preferred solution of the buffer chamber 110, in addition to the effects of "more gentle pressure fluctuations of the compressed air discharged from the cylinder 1" and "lower exhaust noise of the cylinder 1", the buffer chamber 110 also It has the effect of condensation chamber.

The air contains water vapor, which causes the water vapor to condense into water as the temperature of the compressed air decreases. For example: in the foregoing solution, when the high-pressure compressed air is discharged from the cylinder 1 along the air outlet passage 107, the high-pressure compressed air The water vapor condenses on the inner wall of the exhaust channel or the inner wall of the buffer chamber 110 to form water. Due to the above-mentioned preferred solution of the buffer chamber 110, the buffer chamber 110 is actually located at the lower part of the exhaust channel. Therefore, the water on the inner wall of the air outlet channel 107 and the buffer chamber 110 gathers at the bottom of the buffer chamber 110 (bottom) under the action of gravity. (located close to process port E), this can avoid the phenomenon of condensed water flowing back into the high-pressure compression chamber in an environment where the atmospheric temperature is below zero, thereby preventing the condensed water from being squeezed by the piston in the high-pressure compression chamber, and Negative conditions resulting in damage to the cylinder block 1 or piston and connecting rod assembly.

It should be understood that in other embodiments, the position of the buffer chamber 110 can be changed according to the specific structure of the cylinder 1, and/or the arrangement direction (processing direction) of the buffer chamber 110 can be changed; for example: in a certain embodiment , the distance between the contours of the two compression chambers 103 is relatively large, and the buffer chamber 110 can be arranged between the contours of the two compression chambers 103 and close to the centerline of the cylinder 1 (generally speaking, the centerline of the cylinder 1 center line away from the outer surface of the cylinder 1), where the processing direction of the buffer chamber 110 can be parallel to the axis direction of the compression chamber 103, so that the process port E of the buffer chamber 110 is located on the surface of the bottom of the cylinder 1; buffering The machining direction of the chamber 110 may also be perpendicular to the axis direction of the compression chamber 103 so that the process port E of the buffer chamber 110 is located on the surface of the side of the cylinder 1 .

It should be understood that in other embodiments, if the cylinder head is provided with an air outlet passage 107, then the buffer chamber 110 can also be provided on the cylinder head and communicate with the air outlet passage 107 on the cylinder head.

Further, referring to the cylinder 1 of this embodiment in Figure 1, a first reinforcing rib 111 is processed on the first cavity surface C1;

The surface of the cylinder body 1 is processed with second reinforcing ribs 112 .

Among them, the first reinforcing ribs 111 are preferably configured as reticulated reinforcing ribs; the specific shapes of the reticulated reinforcing ribs include but are not limited to: spider web shape, tic-shaped, rice-shaped, etc. In the cylinder 1 in this embodiment, the thickness of the valve plate 104 thereon can be configured to be smaller than the thickness of the valve plate 104 in the prior art. The purpose is to reduce the weight and volume of the cylinder 1; however, if the valve plate The thickness of the valve plate 104 is relatively thin, and the strength of the valve plate 104 does not match the exhaust pressure of the compression chamber 103. The first reinforcing rib 111 is provided to enhance the strength of the valve plate 104, thereby increasing the overall cylinder 1 of this embodiment. strength.

The second reinforcing rib 112 is preferably configured as an annular reinforcing rib. The annular reinforcing rib surrounds the outer surface of the cylinder 1 . The annular surface where the annular reinforcing rib is located is perpendicular to the axis of the compression chamber 103 or cross.

Example 2:

In this embodiment, an air compressor is provided, including the cylinder 1 provided in Embodiment 1.

Specifically, referring to Figures 8 to 12, a cylinder head 2 is provided on the cylinder block 1, and the cylinder cover 2 covers the first mounting surface 101 of the cylinder block 1, so that a low-pressure exhaust chamber is formed between the cylinder block 1 and the cylinder head 2. 3 and high pressure exhaust chamber 4.

Referring to Figure 11 or Figure 12, the cylinder head 2 is preferably provided with reinforcing ribs 401. The reinforcing ribs 401 are used to increase the strength of the cylinder head 2 and to increase the surface area of the inner and outer surfaces of the cylinder head 2, which is beneficial to heat dissipation. Preferably, see FIG. 12 , the reinforcing ribs 401 located on the inner surface of the cylinder head 2 are configured as grid-like reinforcing ribs 401 ; more preferably, referring to FIG. 12 , multiple intersections formed by the grid-like reinforcing ribs 401 are arranged. There is a heat dissipation pillar 402, which further increases the surface area of the inner surface of the cylinder head 2 and helps reduce noise during the circulation of compressed air. In order to match the first mounting surface 101 and the annular protrusion on the cylinder block 1, the cylinder head 2 is processed with a first cylinder head positioning surface 403 and a second cylinder head positioning surface 404, wherein the first cylinder head positioning surface 403 has the same shape as the first mounting surface 101 of the cylinder 1, and the second cylinder head positioning surface 404 has the same shape as the top surface of the annular protrusion of the cylinder 1, which makes the cylinder head 2 cover the cylinder. When the body 1 is installed, a first sealing ring is provided between the first cylinder head positioning surface 403 and the first mounting surface 101 of the cylinder 1, so that the first cylinder head positioning surface 403 and the first mounting surface 101 of the cylinder 1 Clamp the first sealing ring in a face-to-face manner; a second sealing ring is provided between the second cylinder head positioning surface 404 and the top surface of the annular convex portion of the cylinder block 1, so that the second cylinder head positioning surface 404 The second sealing ring is clamped face-to-face with the top surface of the annular convex portion of the cylinder body 1; this arrangement is beneficial to ensuring the air tightness between the cylinder head 2 and the cylinder body 1.

Referring to Figure 9 or Figure 10, a low-pressure piston connecting rod assembly 5 is provided in the low-pressure compression chamber of the cylinder 1. The low-pressure piston connecting rod assembly 5 includes a low-pressure piston and a low-pressure connecting rod. The low-pressure piston is arranged in the low-pressure compression chamber. One end of the low-pressure connecting rod is connected to the low-pressure piston and is located in the low-pressure compression chamber, and the other end of the low-pressure connecting rod is located outside the low-pressure compression chamber; a low-pressure air inlet channel is processed on the low-pressure piston, and a low-pressure air inlet is provided on the low-pressure piston. The air valve plate, in which the low-pressure air intake valve plate is connected to the low-pressure piston through bolts, and a part of the low-pressure air intake valve plate covers the low-pressure air intake passage; during the process of the low-pressure piston connecting rod assembly 5 moving from the top dead center to the lower dead center , negative pressure is generated in the low-pressure compression chamber, so that the low-pressure intake valve plate is deformed by the atmospheric pressure, and a gap is formed between the low-pressure intake valve plate and the surface of the piston, allowing the low-pressure air intake channel and the low-pressure compression chamber to pass through the gap The air outside the low-pressure compression chamber is then injected into the low-pressure compression chamber through the low-pressure intake passage and the 'gap between the low-pressure intake valve plate and the surface of the piston'.

Referring to Figure 10, the cylinder 1 is provided with a low-pressure exhaust valve plate 6 and a low-pressure exhaust range limiting plate 7. The low-pressure exhaust valve plate 6 and the low-pressure exhaust range limiting plate 7 are fixed to the valve plate of the cylinder 1 through bolts. 104, where the low-pressure exhaust valve plate 6 and the low-pressure exhaust range limiting plate 7 are respectively located in the low-pressure exhaust chamber 3, and a part of the low-pressure exhaust valve plate 6 covers the through hole 106 of the low-pressure compression chamber (the through hole 106 is In order to discharge the low-pressure compressed air in the low-pressure compression chamber into the low-pressure exhaust chamber 3); the cylinder 1 is provided with a first threaded blind hole, and the bolt is connected to the first threaded blind hole. The structure of the low-pressure exhaust valve plate 6 and the structure of the low-pressure exhaust range limiting plate 7 are respectively existing technology or common knowledge known to those skilled in the art, and will not be described again here. When the low-pressure piston moves from bottom dead center to top dead center, the air in the low-pressure compression chamber is compressed into low-pressure compressed air. The air pressure of the low-pressure compressed air causes the low-pressure exhaust valve plate 6 to deform, and the deformation of the low-pressure exhaust valve plate 6 The variable is limited by the low-pressure exhaust range limiting plate 7; after a gap is formed between the low-pressure exhaust valve plate 6 and the valve plate 104, the low-pressure compressed air passes from the low-pressure compression chamber through the through hole 106 and the low-pressure exhaust valve plate 6 and the valve plate The gaps between the plates 104 are discharged into the low pressure exhaust chamber 3 .

Referring to Figure 10, the cylinder 1 is provided with a high-pressure intake valve plate 8 and a range-limiting bolt 9. The high-pressure intake valve plate 8 is fixed on the valve plate 104 of the cylinder 1 through the range-limiting bolt 9. The high-pressure intake valve The plate 8 and the stroke-limiting bolt 9 are respectively located in the high-pressure compression chamber. A part of the high-pressure air inlet valve plate 8 covers the through hole 106 of the high-pressure compression chamber (the through hole 106 is used to suck the low-pressure compressed air in the low-pressure compression chamber into the high-pressure compression chamber. cavity); the cylinder 1 is provided with a third threaded blind hole, and the bolt is connected to the third threaded blind hole. The structure of the high-pressure intake valve plate 8 and the structure of the range-limiting bolt 9 are respectively existing technologies or common common sense known to those skilled in the art, and will not be described again here. A high-pressure piston connecting rod assembly 10 is provided in the high-pressure compression chamber of the cylinder 1 . The high-pressure piston connecting rod assembly 10 includes a high-pressure piston and a high-pressure connecting rod. The structure of the high-pressure piston connecting rod assembly 10 is the same as that of the aforementioned low-pressure piston connecting rod assembly 5 The structure of the high-pressure piston connecting rod assembly 10 is similar, but the difference is that the high-pressure piston connecting rod assembly 10 is not provided with any valve plates and channels. When the high-pressure piston moves from top dead center to bottom dead center, negative pressure is generated in the high-pressure compression chamber. At this time, the low-pressure compressed air in the low-pressure exhaust chamber 3 causes the high-pressure intake valve plate 8 to deform, and the high-pressure inlet valve plate 8 is deformed. The shape variable of the valve plate 8 is limited by the range-limiting bolt 9; a gap is formed between the high-pressure intake valve plate 8 and the valve plate 104, and the low-pressure compressed air in the low-pressure exhaust chamber 3 passes through the through hole 106 and the high-pressure intake valve The gap between the piece 8 and the valve plate 104 is sucked into the high-pressure compression chamber.

Referring to Figure 10, the cylinder 1 is provided with a high-pressure exhaust valve plate 11 and a high-pressure exhaust range limiting plate 12. The high-pressure exhaust valve plate 11 and the high-pressure exhaust range limiting plate 12 are fixed to the valve plate of the cylinder 1 through bolts. 104, in which the high-pressure exhaust valve plate 11 and the high-pressure exhaust range limiting plate 12 are respectively located in the high-pressure exhaust chamber 4, and a part of the high-pressure exhaust valve plate 11 covers the through hole 106 of the high-pressure compression chamber (the through hole 106 is In order to discharge the high-pressure compressed air in the high-pressure compression chamber into the high-pressure exhaust chamber 4); the cylinder 1 is provided with a second threaded blind hole, and the bolt is connected to the second threaded blind hole. The structure of the high-pressure exhaust valve plate 11 and the structure of the high-pressure exhaust range limiting plate 12 are respectively existing technologies or common knowledge known to those skilled in the art, and will not be described again here. During the movement of the high-pressure piston from the bottom dead center to the top dead center, the low-pressure compressed air located in the high-pressure compression chamber is compressed into high-pressure compressed air. The pressure of the high-pressure compressed air acts on the aforementioned high-pressure intake valve plate 8, making the high-pressure air The intake valve plate 8 is tightly attached to the valve plate 104; at the same time, the pressure of the high-pressure compressed air acts on the high-pressure exhaust valve plate 11, the high-pressure exhaust valve plate 11 is deformed, and the deformation of the high-pressure exhaust valve plate 11 is affected by the high pressure Limitation of the exhaust range limiting plate 12; a gap is formed between the high-pressure exhaust valve plate 11 and the valve plate 104, and the high-pressure compressed air is discharged through the through hole 106 and the 'gap between the high-pressure exhaust valve plate 11 and the valve plate 104' to the high-pressure exhaust chamber 4.

The high-pressure compressed air in the high-pressure exhaust chamber 4 is discharged to the outside of the cylinder 1 through the air outlet passage 107 of the cylinder 1 .

In this embodiment, referring to Figure 8 or Figure 9, a crankcase 13 and a motor 14 are also provided. The motor 14 is used to drive the crankshaft 16 in the crankcase 13. The crankshaft 16 and the motor shaft of the motor 14 are connected by a coupling. The device 17 is connected, so that the crankshaft 16 drives the aforementioned high-pressure piston connecting rod assembly 10 and low-pressure piston connecting rod assembly 5 to move.

Referring to Figure 9, the crankshaft 16 in this embodiment is preferably a split crankshaft, which is fixed in the crankcase 13 using a positioning bearing; one of the two axial ends of the split crankshaft is used to set the aforementioned The other end of the low-pressure piston connecting rod assembly 5 is used to set the aforementioned high-pressure piston connecting rod assembly 10; the aforementioned coupling 17 and the high-pressure piston connecting rod assembly 10 are located at the same end of the crankshaft 16. It should be understood that the connection structures between the high-pressure piston connecting rod assembly 10 and the low-pressure piston connecting rod assembly 5 and the crankshaft 16 are common knowledge or prior art known to those skilled in the art, and will not be described again here.

Referring to Figure 9, the coupling 17 in this embodiment has a driving end 1701 and a driven end 1702, where the driven end 1702 is connected to the crankshaft, the driving end 1701 is connected to the motor shaft of the motor 14; the driven end 1702 The connection structure with the crankshaft, the connection structure between the driving end 1701 and the motor shaft of the motor 14, and the connection structure between the driving end 1701 and the driven end 1702 are respectively common knowledge or existing knowledge known to those skilled in the art. There is technology, which I won’t go into details here.

Referring to Figure 8 or Figure 9, the crankcase 13 of this embodiment is provided with an air inlet end cover 15, and the air inlet end cover 15 is provided with an air inlet passage; air located outside the crankcase 13 is injected into the crankcase from the air inlet passage. 13, the air inside the crankcase 13 is sucked into the low-pressure compression chamber.

Example 3:

In this embodiment, a commercial vehicle is provided, including the air compressor as in Embodiment 2. Among them, commercial vehicles include but are not limited to: trucks and buses; from the perspective of power source, commercial vehicles include: fuel commercial vehicles, pure electric commercial vehicles, gasoline-electric hybrid commercial vehicles, hydrogen commercial vehicles, etc.

The above descriptions are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are Likewise, it is included in the patent protection scope of the present invention.

Claims (10)

1. The cylinder body is characterized in that the cylinder body is processed with a first mounting surface and a second mounting surface that are parallel to each other and spaced apart;

   The direction from the second mounting surface to the first mounting surface is defined as a first direction, the direction from the first mounting surface to the second mounting surface is defined as a second direction, the first direction and the The second direction is opposite;

   Along the first direction, the cylinder is processed with a compression chamber;

   A portion of the cylinder is processed into a valve plate, wherein the valve plate covers the compression chamber.
2. The cylinder according to claim 1, wherein the valve plate has two plate surfaces, and one of the plate surfaces viewed along the second direction is defined as the first plate surface. The other of the panels viewed in the first direction defines a second panel;

   The first board surface and the second board surface are respectively located between the first mounting surface and the second mounting surface;

   Alternatively, the first board surface is located outside the first mounting surface and the second mounting surface, and the second board surface is located between the first mounting surface and the second mounting surface;

   Alternatively, the first board surface and the second board surface are respectively located outside the first mounting surface and the second mounting surface.
3. The cylinder block according to claim 2, characterized in that a protrusion is processed on the valve plate;

   The protrusion is used to separate the first plate surface into a first cavity surface and a second cavity surface, and the contours of the first cavity surface and the second cavity surface are isolated from each other.
4. The cylinder block according to claim 3, wherein the protruding portion is an annular protruding portion;

   The annular protrusion has an outer ring profile and an inner ring profile, the first cavity surface is located outside the outer ring profile, and the second cavity surface is located inside the inner ring profile.
5. The cylinder block according to claim 4, wherein the valve plate is processed with a plurality of through holes for gas circulation, wherein the through holes in the first part are defined as low-pressure exhaust holes, and the through holes in the second part are defined as low-pressure exhaust holes. The through hole in the third part is defined as a high-pressure exhaust hole, and the through hole in the third part is defined as a high-pressure air inlet hole;

   The number of compression chambers is 2;

   One of the compression chambers is defined as a low-pressure compression chamber, and all of the low-pressure exhaust holes are respectively connected with the low-pressure compression chamber, wherein any of the low-pressure exhaust holes is located on the surface of the first chamber;

   The other of the compression chambers is defined as a high-pressure compression chamber, all of the high-pressure air inlets are connected to the high-pressure compression chamber, and all of the high-pressure exhaust holes are connected to the high-pressure compression chamber, where, Any one of the high-pressure air inlet holes is located on the surface of the first cavity, and any one of the high-pressure exhaust holes is located on the surface of the second cavity.
6. The cylinder block according to claim 4, characterized in that the cylinder block is processed with an air outlet channel;

   The mouth of one end of the air outlet channel is defined as an air inlet, and the air inlet is located on the inner annular surface of the annular protrusion;

   The mouth of the other end of the air outlet passage is defined as an air outlet, and the air outlet is located on the outer surface of the cylinder.
7. The cylinder body according to claim 6, characterized in that the cylinder body is processed with a buffer cavity;

   The buffer chamber communicates with the air outlet channel.
8. The cylinder block according to claim 3, wherein a first reinforcing rib is processed on the surface of the first cavity;

   The surface of the cylinder body is processed with second reinforcing ribs.
9. An air compressor is characterized by comprising a cylinder according to any one of claims 1 to 8.
10. A commercial vehicle, characterized by including the air compressor according to claim 9.

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