Common cylinder head blank and air compressor

Abstract

The present application relates to the field of air compressor, specifically is common type cylinder head blank and air compressor. Common type cylinder head blank includes cover part and isolation part, cover part is provided with first exhaust port, second exhaust port, inner cavity and mounting surface for covering valve plate, inner cavity is separated by isolation part into first chamber, second chamber, third chamber, fourth chamber, fifth chamber, sixth chamber and seventh chamber, also has first variable shape part, second variable shape part and third partial isolation part is defined as third variable shape part. By configuring second exhaust port to communicate with third chamber, and by setting first variable shape part and third variable shape part in separated state from the rest of isolation part, common type cylinder head blank can be applied to primary compressor with two cylinder chambers, or, by setting second variable shape part in separated state from the rest of isolation part, common type cylinder head blank can be applied to secondary compressor with two cylinder chambers.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air compressors, in particular to a common cylinder head blank and an air compressor. BACKGROUND

[0002] In the prior art, the structure of the cylinder head of the primary compressor is completely different from the structure of the cylinder head of the secondary compressor.

[0003] If the primary compressor has only one compression chamber, then the cylinder head of the primary compressor is correspondingly provided with a set of air inlet channels and a set of air outlet channels, and if the secondary compressor has two compression chambers, then the secondary compressor is provided with two sets of air inlet channels and two sets of air outlet channels; the cylinder head of the primary compressor cannot be used on the secondary compressor because the cylinder head of the primary compressor lacks a set of air inlet channels and a set of air outlet channels that match the secondary compressor; the cylinder head of the secondary compressor cannot be used on the primary compressor because the cylinder head of the secondary compressor has an extra set of air inlet channels and an extra set of air outlet channels.

[0004] If the primary compressor has two compression chambers (each being a primary compression chamber), then the cylinder head of the primary compressor is correspondingly provided with two sets of air inlet channels and two sets of air outlet channels, and if the secondary compressor has two compression chambers (each being a primary compression chamber and a secondary compression chamber), then the cylinder head of the secondary compressor is correspondingly provided with two sets of air inlet channels and two sets of air outlet channels, but the cylinder head of the primary compressor cannot be used on the secondary compressor, and the cylinder head of the secondary compressor cannot be used on the primary compressor because the position relationship and connection relationship (communication relationship) of the two sets of air inlet channels and the two sets of air outlet channels of the cylinder head of the primary compressor are different from the position relationship and connection relationship (communication relationship) of the two sets of air inlet channels and the two sets of air outlet channels of the cylinder head of the secondary compressor.

[0005] The essential reason for the above phenomenon is that after the cylinder head of the primary compressor and the cylinder head of the secondary compressor are respectively manufactured, the number, position relationship and connection relationship (communication relationship) of the air inlet channels and the air outlet channels of the cylinder head of the primary compressor have formed a fixed structure, and the number, position relationship and connection relationship (communication relationship) of the air inlet channels and the air outlet channels of the cylinder head of the secondary compressor have formed a fixed structure, so that the cylinder head of the primary compressor cannot be modified into the cylinder head of the secondary compressor, and the cylinder head of the secondary compressor cannot be modified into the cylinder head of the primary compressor.

[0006] Therefore, how to provide a cylinder head blank, after the cylinder head blank is manufactured, the number, position relationship and connection relationship of the air inlet channels of the cylinder head blank can be adaptively modified, so that the same kind of cylinder head blank can be matched to the primary compressor and the secondary compressor, becomes a technical problem to be solved. SUMMARY

[0007] To solve the technical problem of how to provide a cylinder cover blank, after the cylinder cover blank is manufactured, the number, positional relationship and connection relationship of the intake passages of the cylinder cover blank can be adaptively modified, so that the same cylinder cover blank can be matched with a primary compressor and a secondary compressor, the application provides a shared type cylinder cover blank and an air compressor.

[0008] To achieve the above-mentioned purpose, the technical solution adopted by the application is:

[0009] According to one aspect of the application, a shared type cylinder cover blank is provided, comprising a cover-shaped part and a partition part;

[0010] The cover-shaped part is provided with a first exhaust port, a second exhaust port, an inner cavity and a mounting surface for covering a valve plate, the profile of the inner cavity intersects with the mounting surface to form a cover opening, and the first exhaust port and the second exhaust port are respectively used to communicate the outside of the cover-shaped part and the inner cavity;

[0011] The partition part is arranged in the inner cavity, and the inner cavity is partitioned into a first chamber, a second chamber, a third chamber, a fourth chamber, a fifth chamber, a sixth chamber and a seventh chamber by the partition part, wherein the first exhaust port communicates with the first chamber, the second exhaust port communicates with the third chamber, and the first chamber to the fifth chamber are sequentially and mutually isolated by the partition part along the direction of the long side of the mounting surface, and the sixth chamber and the seventh chamber are mutually isolated to jointly form a semi-enclosed structure for surrounding the first chamber to the fifth chamber;

[0012] A flow passage is arranged between the second chamber and the fifth chamber, the flow passage communicates with the second chamber and the fifth chamber respectively, and the flow passage forms an isolated state with the third chamber and the fourth chamber respectively;

[0013] A first part of the partition part between the sixth chamber and the third chamber is defined as a first variable part, a second part of the partition part between the sixth chamber and the fourth chamber is defined as a second variable part, and a third part of the partition part between the fifth chamber and the fourth chamber is defined as a third variable part, the first variable part, the second variable part and the third variable part have a fixed state and a separated state relative to the remaining partition parts, and the first variable part, the second variable part and the third variable part are respectively configured to be selected to change from the fixed state to the separated state.

[0014] According to one aspect of the application, an air compressor is provided, comprising a cylinder cover, a valve plate and a crankcase;

[0015] The cylinder head is made of a common cylinder head blank as mentioned above;

[0016] The valve plate is provided with a first inlet hole, a first outlet hole, a second inlet hole, a second outlet hole, a first flow guide hole, a second flow guide hole, a third flow guide hole and a fourth flow guide hole;

[0017] The cylinder head is provided with a partition plate, and the space in the cylinder head is divided into a first space and a second space by the partition plate. The cylinder head is provided with a locating surface to be covered by the valve plate. The first space is located between the locating surface and the partition plate. The profile of the first space intersects with the profile of the locating surface to form an opening part. The first space is separated into a first gas cavity, a second gas cavity, a third gas cavity, a fourth gas cavity, an oil guide cavity, a first cylinder cavity and a second cylinder cavity by a plurality of partition plates;

[0018] When one side of the valve plate covers the mounting surface and the other side of the valve plate covers the locating surface, along the direction from the cylinder head to the cylinder block, the first inlet hole is communicated with the first cylinder cavity and the fifth cavity respectively, the first outlet hole is communicated with the first cylinder cavity and the seventh cavity respectively, the second inlet hole is communicated with the second cylinder cavity and the fourth cavity respectively, the second outlet hole is communicated with the second cylinder cavity and the third cavity respectively, the first flow guide hole is communicated with the first gas cavity and the second cavity respectively, the second flow guide hole is communicated with the second gas cavity and the seventh cavity respectively, the third flow guide hole is communicated with the third gas cavity and the first cavity respectively, and the fourth flow guide hole is communicated with the fourth gas cavity and the sixth cavity respectively;

[0019] The first variable part and the third variable part are respectively in a separated state with the rest of the partition parts, and the second variable part is in a fixed state with the rest of the partition parts;

[0020] Alternatively, the second variable part is in a separated state with the rest of the partition parts, and the first variable part and the third variable part are respectively in a fixed state with the rest of the partition parts.

[0021] Further, a first plugging component is further included;

[0022] The cylinder head is provided with a process hole, and the first plugging component is used to seal the process hole;

[0023] A second plugging component is further included;

[0024] When the first variable part and the third variable part are respectively in a separated state with the rest of the partition parts, and the second variable part is in a fixed state with the rest of the partition parts, the second plugging component is used to seal the second exhaust port;

[0025] Or, when the second deformation part and the rest of the isolation part form a separation state, the first deformation part and the third deformation part form a fixed state with the rest of the isolation part, respectively, the second sealing part is used to seal the first exhaust port.

[0026] Further, it further includes a third sealing part;

[0027] When the second deformation part and the rest of the isolation part form a separation state, the first deformation part and the third deformation part form a fixed state with the rest of the isolation part, respectively, the third sealing part is used to seal the third flow hole.

[0028] Further, the crankcase is provided with two air inlets, wherein the first air chamber is located between the two air inlets, and the two air inlets are communicated with the first air chamber, respectively;

[0029] A plurality of first filter parts manufactured by powder metallurgy process are arranged in the first air chamber, wherein a part of the first filter parts are located between one of the air inlets and the first flow hole, and another part of the first filter parts are located between the other air inlet and the first flow hole.

[0030] Further, the second air chamber and the third air chamber are separated by a plurality of second filter parts manufactured by powder metallurgy process, and the third air chamber and the fourth air chamber are separated by a plurality of third filter parts manufactured by powder metallurgy process;

[0031] The second filter part and the isolation plate form a first flow port, the third filter part and the isolation plate form a second flow port, the second air chamber and the third air chamber are communicated through the first flow port, and the third air chamber and the fourth air chamber are communicated through the second flow port.

[0032] Further, the first cylinder chamber and the second cylinder chamber are surrounded by the oil guide chamber;

[0033] It further includes an oil pump, an oil outlet channel and an oil inlet channel;

[0034] The oil pump is arranged in the crankcase, the oil outlet channel is communicated with the oil guide chamber, and the oil outlet channel forms an oil outlet with the isolation plate;

[0035] The oil inlet channel is communicated with the second space;

[0036] The oil outlet channel and the oil inlet channel are communicated with the oil pump, respectively.

[0037] Further, the crankshaft, the first connecting rod, the second connecting rod and the lubricating channel are further included.

[0038] The first connecting rod and the second connecting rod are respectively hinged to the crankshaft, the first connecting rod extends along the direction from the crankshaft to the first cylinder cavity, and the second connecting rod extends along the direction from the crankshaft to the second cylinder cavity.

[0039] The crankshaft is provided with a crankshaft oil channel, a gap between the first connecting rod and the crankshaft is a first gap, a gap between the second connecting rod and the crankshaft is a second gap, the lubricating channel is communicated with the crankshaft oil channel, one end of the lubricating channel is communicated with the oil guide cavity, and the other end of the lubricating channel is communicated with the second space.

[0040] Further, a filter for filtering lubricating oil is further included.

[0041] The filter is detachably arranged on the filter seat, the filter seat is provided with a first oil guide channel and a second oil guide channel, the first oil guide channel is respectively communicated with the oil guide cavity and the filter, and the second oil guide channel is respectively communicated with the filter and the second space.

[0042] Further, the bottom of the second space is provided with an oil storage groove.

[0043] The bottom of the crankcase is provided with a heat dissipation rib.

[0044] The above technical scheme has the following advantages or beneficial effects:

[0045] The common cylinder cover blank provided by the application can be applied to a primary compressor with two cylinder cavities by configuring the second exhaust port to be communicated with the third cavity and by setting the first deformation part and the third deformation part in a separated state from the remaining isolation parts, or the common cylinder cover blank can be applied to a secondary compressor with two cylinder cavities by setting the second deformation part in a separated state from the remaining isolation parts, so that the technical problem of how to provide a cylinder cover blank that can be adaptively modified in the number, positional relationship and connection relationship of the intake passage of the cylinder cover blank after the cylinder cover blank is manufactured, so that the same cylinder cover blank can be matched with a primary compressor and a secondary compressor is solved. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 A structure schematic view of the common cylinder cover blank provided by the embodiment of the application is shown in the figure.

[0047] Figure 2 A structure schematic view of the common cylinder cover blank provided by the embodiment of the application is shown in the figure.

[0048] Figure 3 A structure schematic diagram of the common type cylinder cover blank provided by the embodiment of the present application is shown in the figure;

[0049] Figure 4 A structure schematic diagram of the common type cylinder cover blank provided by the embodiment of the present application is shown in the figure;

[0050] Figure 5 A structure schematic diagram of the common type cylinder cover blank provided by the embodiment of the present application is shown in the figure;

[0051] Figure 6 A structure schematic diagram of the air compressor provided by the embodiment of the present application is shown in the figure;

[0052] Figure 7 A structure schematic diagram of one part of the air compressor provided by the embodiment of the present application is shown in the figure;

[0053] Figure 8 A structure schematic diagram of one part of the air compressor provided by the embodiment of the present application is shown in the figure;

[0054] Figure 9 A structure schematic diagram of one part of the air compressor provided by the embodiment of the present application is shown in the figure;

[0055] Figure 10 A structure schematic diagram of one part of the air compressor provided by the embodiment of the present application is shown in the figure;

[0056] Figure 11 A structure schematic diagram of the valve plate provided by the embodiment of the present application is shown in the figure;

[0057] Figure 12 A structure schematic diagram of the valve plate provided by the embodiment of the present application is shown in the figure;

[0058] Figure 13 A structure schematic diagram of the crankcase provided by the embodiment of the present application is shown in the figure;

[0059] Figure 14 A structure schematic diagram of the crankcase provided by the embodiment of the present application is shown in the figure;

[0060] Figure 15 A structure schematic diagram of the crankcase provided by the embodiment of the present application is shown in the figure;

[0061] Figure 16 A structure schematic diagram of one part of the air compressor provided by the embodiment of the present application is shown in the figure;

[0062] Figure 17 A structure schematic diagram of one part of the air compressor provided by the embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0063] Embodiment 1:

[0064] In the embodiment, a common type cylinder cover blank is provided to solve the technical problem of how to provide a cylinder cover blank, after the cylinder cover blank is manufactured, the number, position relationship and connection relationship of the intake passages of the cylinder cover blank can be adapted to be modified, so that the same cylinder cover blank can be matched with a primary compressor and a secondary compressor.

[0065] Specifically, referring to Figures 1 to 5 The common type cylinder cover blank (hereinafter referred to as a cylinder cover blank) in the embodiment includes a cover-shaped part 100 and a partition part 200.

[0066] The cover-shaped part 100 is provided with a first exhaust port 300, a second exhaust port 400, an inner cavity and a mounting surface 500 for covering a valve plate, the profile of the inner cavity intersects with the mounting surface 500 to form a cover opening, and the first exhaust port 300 and the second exhaust port 400 are respectively used to communicate the outside of the cover-shaped part 100 and the inner cavity.

[0067] The partition part 200 is arranged in the inner cavity, and the inner cavity is separated into a first chamber G01, a second chamber G02, a third chamber G03, a fourth chamber G04, a fifth chamber G05, a sixth chamber G06 and a seventh chamber G07 by the partition part 200, wherein the first exhaust port 300 communicates with the first chamber G01, the second exhaust port 400 communicates with the third chamber G03, the first chamber G01 to the fifth chamber G05 are sequentially and mutually separated by the partition part 200 along the direction of the long side of the mounting surface 500, and the sixth chamber G06 and the seventh chamber G07 are mutually separated to jointly form a semi-enclosing structure for surrounding the first chamber G01 to the fifth chamber G05.

[0068] A flow passage G08 is arranged between the second chamber G02 and the fifth chamber G05, the flow passage G08 respectively communicates with the second chamber G02 and the fifth chamber G05, and the flow passage G08 respectively forms an isolated state with the third chamber G03 and the fourth chamber G04.

[0069] A first part of the partition part 200 between the sixth chamber G06 and the third chamber G03 is defined as a first variable shape part B01, a second part of the partition part 200 between the sixth chamber G06 and the fourth chamber G04 is defined as a second variable shape part B02, and a third part of the partition part 200 between the fifth chamber G05 and the fourth chamber G04 is defined as a third variable shape part B03, the first variable shape part B01, the second variable shape part B02 and the third variable shape part B03 respectively have a fixed state and a separated state relative to the remaining partition parts 200, and the first variable shape part B01, the second variable shape part B02 and the third variable shape part B03 are respectively configured to be selected to change from the fixed state to the separated state.

[0070] It should be understood that the terms primary compressor, secondary compressor, primary air compressor, secondary air compressor, two-stage compressor, two-stage air compressor, etc. mentioned in this embodiment are essentially air compressors, respectively.

[0071] In this embodiment, the scenario in which the cylinder head blank is applied to a primary compressor is defined as a first scenario, and the scenario in which the cylinder head blank is applied to a secondary compressor is defined as a second scenario.

[0072] In the first scenario, referring to Figure 4 or Figure 7 , when the cylinder head blank of this embodiment is arranged on a primary compressor, the first deformation portion B01 and the third deformation portion B03 are respectively brought into a separated state with respect to the remaining isolation portions 200, so that the third chamber G03 and the sixth chamber G06 are configured in a communicating state, and so that the fourth chamber G04 and the fifth chamber G05 are configured in a communicating state, and the second deformation portion B02 is kept in a fixed state with respect to the remaining isolation portions 200, so that the fourth chamber G04 and the sixth chamber G06 are kept in an isolated state.

[0073] In the first scenario, the second chamber G02 functions to guide air located outside the cylinder head blank to the inside of the cylinder head blank; when the cylinder head blank of this embodiment is arranged on a primary air compressor, the second chamber G02 is used to introduce air outside the air compressor to the inside of the air compressor.

[0074] In the first scenario, referring to Figure 3 , the function of the flow passage G08 is to guide air in the second chamber G02 to the fifth chamber G05; when the cylinder head blank of this embodiment is arranged on an air compressor, since the fifth chamber G05 communicates with the first cylinder chamber (the first compression chamber) in the crankcase, the second chamber G02, the flow passage G08, and the fifth chamber G05 together constitute a first air inlet passage for introducing air into the first cylinder chamber.

[0075] When the cylinder head blank in the first scenario is arranged on an air compressor, and the fourth chamber G04 and the fifth chamber G05 communicate, and the third chamber G03 and the sixth chamber G06 communicate (see Figure 7 , since the fourth chamber G04 communicates with the second cylinder chamber (the second compression chamber) in the crankcase, the second chamber G02, the flow passage G08, the fifth chamber G05, and the fourth chamber G04 together constitute a second air inlet passage for introducing air into the second cylinder chamber;

[0076] When the cylinder head blank in the first scenario is arranged on an air compressor, and the fourth chamber G04 and the fifth chamber G05 communicate, and the third chamber G03 and the sixth chamber G06 communicate (see Figure 7), since the third chamber G03 communicates with the second cylinder chamber (the second compression chamber) in the crankcase, the sixth chamber G06 communicates with the fourth and third air chambers in the crankcase, the third air chamber in the crankcase communicates with the first chamber G01, and the first chamber G01 communicates with the first exhaust port 300, thus the third chamber G03, the sixth chamber G06, the first chamber G01, and the first exhaust port 300 are respectively one part of the second exhaust passage.

[0077] When the cylinder head blank in the first scenario is arranged on the air compressor, and the fourth chamber G04 communicates with the fifth chamber G05, and the third chamber G03 communicates with the sixth chamber G06 (see Figure 7 ), since the seventh chamber G07 respectively communicates with the first cylinder chamber (the first compression chamber) and the second air chamber in the crankcase, and since the second air chamber in the crankcase communicates with the third air chamber, and the third air chamber communicates with the first chamber G01, and the first chamber G01 communicates with the first exhaust port 300, thus the seventh chamber G07, the first chamber G01, and the first exhaust port 300 are respectively one part of the first exhaust passage.

[0078] When the cylinder head blank in the first scenario is arranged on the primary compressor, the primary compressor has two cylinder chambers (see Figure 14 G316 and G317), which are respectively the first and second cylinder chambers; the two cylinder chambers are respectively the primary compression chambers; correspondingly, the aforementioned first intake passage and the first exhaust passage respectively communicate with the first cylinder chamber, so that when the first cylinder chamber produces negative pressure lower than atmospheric pressure, air outside the primary compressor is sucked into the first cylinder chamber through the first intake passage, and when the first cylinder chamber produces positive pressure higher than atmospheric pressure, the air in the first cylinder chamber is compressed, and the compressed air is discharged to the outside of the primary compressor through the first exhaust passage; similarly, the aforementioned second intake passage and the second exhaust passage respectively communicate with the second cylinder chamber, so that when the second cylinder chamber produces negative pressure lower than atmospheric pressure, air outside the primary compressor is sucked into the second cylinder chamber through the second intake passage, and when the second cylinder chamber produces positive pressure higher than atmospheric pressure, the air in the second cylinder chamber is compressed, and the compressed air is discharged to the outside of the primary compressor through the second exhaust passage.

[0079] It should be understood that in the first scenario, see Figure 3 , the primary and secondary exhaust passages respectively have the first chamber G01 and the first exhaust port 300, in other words, the compressed air discharged from the first cylinder chamber and the compressed air discharged from the second cylinder chamber respectively reach the first chamber G01, and the compressed air of the two cylinder chambers is respectively discharged from the first exhaust port 300.

[0080] It should be understood that in the first scenario, the second exhaust port 400 is blocked (see Figure 1 or Figure 5 ) to avoid the compressed air being discharged to the outside of the primary air compressor through the third chamber G03 and the second exhaust port 400.

[0081] Referring to Figure 4 or Figure 8 , in the second scenario, the second deformation part B02 is separated from the rest of the isolation part 200 to form a separated state, so that the fourth chamber G04 and the sixth chamber G06 are configured to be in a communicating state, and the first deformation part B01 and the third deformation part B03 are respectively kept in a fixed state relative to the rest of the isolation part 200, so that the third chamber G03 and the sixth chamber G06 are kept in an isolated state, and the fourth chamber G04 and the fifth chamber G05 are kept in an isolated state.

[0082] In the second scenario, the second chamber G02 is used to guide the air outside the cylinder head blank to the inside of the cylinder head blank; when the cylinder head blank of the present embodiment is arranged on the secondary air compressor, the second chamber G02 is used to introduce the air outside the air compressor to the inside of the air compressor.

[0083] In the second scenario, referring to Figure 3 , the function of the flow passage G08 is to guide the air in the second chamber G02 to the fifth chamber G05; when the cylinder head blank of the present embodiment is arranged on the air compressor, since the fifth chamber G05 communicates with the first cylinder cavity (primary compression cavity) in the crankcase, the second chamber G02, the flow passage G08, and the fifth chamber G05 together form a third air inlet passage for introducing air into the first cylinder cavity.

[0084] When the cylinder head blank in the second scenario is arranged on the air compressor, and the fourth chamber G04 and the sixth chamber G06 communicate (see Figure 8 ), since the fourth chamber G04 communicates with the second cylinder cavity (secondary compression cavity) in the crankcase, the sixth chamber G06 communicates with the fourth air cavity of the crankcase, the fourth air cavity in turn communicates with the third air cavity and the second air cavity, and the second air cavity communicates with the seventh chamber G07, so that, with respect to the second cylinder cavity (secondary compression cavity), the seventh chamber G07, the sixth chamber G06, and the fourth chamber G04 are respectively one part of the fourth air inlet passage, and with respect to the first cylinder cavity (primary compression cavity), the seventh chamber G07, the sixth chamber G06, and the fourth chamber G04 are respectively one part of the third exhaust passage;

[0085] It should be understood that in the secondary compressor, the above-mentioned third exhaust passage and fourth exhaust passage are the same passage, which is essentially an inter-stage passage for connecting the first cylinder cavity and the second cylinder cavity.

[0086] When the cylinder cover blank of the present embodiment is arranged on the air compressor, and the fourth chamber G04 and the sixth chamber G06 are communicated (see Figure 8 ), since the third chamber G03 is communicated with the second exhaust port 400 and the second cylinder chamber of the crankcase respectively, the third chamber G03 and the second exhaust port 400 constitute the fourth exhaust passage.

[0087] When the cylinder cover blank in the second scenario is arranged on the two-stage compressor, the two-stage compressor has two cylinder chambers (see Figure 14 Q316 and Q317 in the figure), which are respectively a first cylinder chamber and a second cylinder chamber, the first cylinder chamber is a primary compression chamber, and the second cylinder chamber is a two-stage compression chamber; Correspondingly, the third intake passage and the third exhaust passage (i.e. the fourth intake passage) of the foregoing are communicated with the first cylinder chamber respectively, and the fourth intake passage (i.e. the third exhaust passage) and the fourth exhaust passage of the foregoing are communicated with the second cylinder chamber respectively, so that when the negative pressure lower than the atmospheric pressure is generated in the first cylinder chamber, the air outside the two-stage compressor is sucked into the first cylinder chamber through the third intake passage, when the positive pressure higher than the atmospheric pressure is generated in the first cylinder chamber, and the negative pressure lower than the atmospheric pressure is generated in the second cylinder chamber, the air in the first cylinder chamber is compressed to form primary compressed air, and the compressed air is sucked into the second cylinder chamber through the third exhaust passage (i.e. the fourth intake passage), when the positive pressure higher than the atmospheric pressure and higher than the pressure of the primary compressed air is generated in the second cylinder chamber, the air in the second cylinder chamber forms two-stage compressed air, and the two-stage compressed air is discharged to the outside of the two-stage compressor through the fourth exhaust passage.

[0088] It should be understood that in the second scenario, when the cylinder cover blank is arranged on the two-stage compressor, the first exhaust port 300 is blocked (see Figure 8 ), so as to avoid that the compressed air is discharged to the outside of the two-stage compressor through the first chamber G01 and the first exhaust port 300.

[0089] The common type cylinder cover blank in the embodiment divides the inner cavity of the cover-shaped part 100 into the first chamber G01 to the seventh chamber G07 through the isolation part 200, configures the first exhaust port 300 to communicate with the first chamber G01, configures the second exhaust port 400 to communicate with the third chamber G03, and sets the first variable part B01 and the third variable part B03 in a separated state from the rest of the isolation part 200, so that the common type cylinder cover blank can be applied to a primary compressor with two cylinder cavities, or sets the second variable part B02 in a separated state from the rest of the isolation part 200, so that the common type cylinder cover blank can be applied to a secondary compressor with two cylinder cavities, thereby solving the technical problem of how to provide a cylinder cover blank that can be adaptively modified in the number, positional relationship and connection relationship of the intake passages of the cylinder cover blank after the cylinder cover blank is manufactured, so that the same type of cylinder cover blank can be matched with a primary compressor and a secondary compressor.

[0090] Further, in the foregoing scheme, the following two ways can be adopted to form the first variable part B01, the second variable part B02 and the third variable part B03 in the fixed state and the separated state from the rest of the isolation part 200, respectively.

[0091] The first way is that the cover-shaped part 100 and the isolation part 200 of the cylinder cover blank are integrally made, for example, by a mold; the first variable part B01, the second variable part B02 and the third variable part B03 are respectively one part of the structure of the cylinder cover blank; when the cylinder cover blank is used for a primary compressor, the first variable part B01 and the third variable part B03 are cut off by mechanical processing, for example, cutting.

[0092] The second way is that the cover-shaped part 100 and the isolation part 200 of the cylinder cover blank are integrally made, for example, by a mold; positioning openings are processed or reserved at the positions of the first variable part B01, the second variable part B02 and the third variable part B03 on the cylinder cover blank; according to the use of the cylinder cover blank, sealing parts and isolation parts are arranged in the positioning openings; the sealing parts include but are not limited to graphite sealing parts or hard rubber sealing parts; the isolation parts are made of metal or alloy materials; the sealing parts are used to seal the gap between the isolation parts and the isolation part 200 at the positioning openings; when the cylinder cover blank is used for a primary compressor, the positioning opening of the second variable part B02 is provided with the above-mentioned sealing parts and isolation parts; when the cylinder cover blank is used for a secondary compressor, the positioning openings of the first variable part B01 and the third variable part B03 are respectively provided with the above-mentioned sealing parts and isolation parts.

[0093] Further, if the aforementioned cylinder cover blank is made by a mold, a process hole 600 (see Figure 2 or Figure 3 ) is formed on the isolation portion 200 at the intersection of the first chamber G01 and the second chamber G02, which is preferably coaxially arranged with the first exhaust port 300 and the flow passage G08; whether the cylinder cover blank is applied to a primary compressor or a secondary compressor, the process hole 600 needs to be plugged (see Figure 7 or Figure 8 ) to avoid air or compressed air flowing through the process hole 600 between the first chamber G01 and the second chamber G02, thereby avoiding disturbing the flow direction of air or compressed air in the cylinder cover blank.

[0094] Further, referring to Figure 1 or Figure 2 , the cylinder cover blank of the embodiment is provided with the first exhaust port 300 and the second exhaust port 400, the opening direction of the first exhaust port 300 is parallel to the mounting surface 500, and the opening direction of the second exhaust port 400 is perpendicular to the second mounting surface 500.

[0095] Embodiment 2:

[0096] Referring to Figures 1 to 17 , in this embodiment, an air compressor is provided, which includes a cylinder cover 1, a valve plate 2, and a crankcase 3;

[0097] The cylinder cover 1 is made of a common cylinder cover blank as in Embodiment 1;

[0098] The valve plate 2 is provided with a first air inlet hole F201, a first air outlet hole F202, a second air inlet hole F203, a second air outlet hole F204, a first flow guide hole F205, a second flow guide hole F206, a third flow guide hole F207, and a fourth flow guide hole F208;

[0099] The crankcase 3 is provided with a partition plate Q31, the space in the crankcase 3 is divided into a first space and a second space by the partition plate Q31, the crankcase 3 is provided with a positioning surface Q32 to be covered by the valve plate 2, the first space is located between the positioning surface Q32 and the partition plate Q31, the profile of the first space intersects with the profile of the positioning surface Q32 to form an opening portion, and the first space is separated into a first air chamber Q311, a second air chamber Q312, a third air chamber Q313, a fourth air chamber Q314, an oil guide chamber Q315, a first cylinder chamber Q316, and a second cylinder chamber Q317 by a plurality of partition plates;

[0100] When one side of the valve plate 2 covers the installation surface 500 and the other side of the valve plate 2 covers the positioning surface Q32, in the direction from the cylinder head 1 to the crankcase 3, the first intake hole F201 respectively communicates with the first cylinder cavity Q316 and the fifth chamber G05, the first exhaust hole F202 respectively communicates with the first cylinder cavity Q316 and the seventh chamber G07, the second intake hole F203 respectively communicates with the second cylinder cavity Q317 and the fourth chamber G04, the second exhaust hole F204 respectively communicates with the second cylinder cavity Q317 and the third chamber G03, the first flow guide hole F205 respectively communicates with the first air cavity Q311 and the second chamber G02, the second flow guide hole F206 respectively communicates with the second air cavity Q312 and the seventh chamber G07, the third flow guide hole F207 respectively communicates with the third air cavity Q313 and the first chamber G01, and the fourth flow guide hole F208 respectively communicates with the fourth air cavity Q314 and the sixth chamber G06;

[0101] The first deformation part B01 and the third deformation part B03 respectively form a separation state with the rest of the isolation part 200, and the second deformation part B02 forms a fixed state with the rest of the isolation part 200.

[0102] Alternatively, the second deformation part B02 forms a separation state with the rest of the isolation part 200, and the first deformation part B01 and the third deformation part B03 respectively form a fixed state with the rest of the isolation part 200.

[0103] It should be understood that the terms primary compressor, secondary compressor, primary air compressor, secondary air compressor, two-stage compressor, two-stage air compressor, etc. mentioned in the embodiments are essentially air compressors.

[0104] It should be understood that when the air compressor is arranged on the ground, the cylinder head 1 is located at the upper part of the valve plate 2, the crankcase 3 is located at the lower part of the valve plate 2, the first space is located at the upper part of the isolation plate, and the second space is located at the lower part of the isolation plate; in another aspect, the first space includes the first air cavity Q311, the second air cavity Q312, the third air cavity Q313, the fourth air cavity Q314, the oil guide cavity Q315, the first cylinder cavity Q316, and the second cylinder cavity Q317.

[0105] The cylinder head 1 in the embodiment is made of the cylinder head blank in the foregoing embodiment 1, and the specific structure, function, and solved technical problems of the cylinder head blank are described in the foregoing embodiment 1, which will not be repeated here.

[0106] In the embodiment, the cylinder head 1 is configured in two structures, which are a first cylinder head 1 (see Figure 7 ) matched with a primary compressor having two cylinder cavities, and a second cylinder head 1 (see Figure 8 ) matched with a secondary compressor having two cylinder cavities.

[0107] Referring toFigure 4 or Figure 7 In the first stage compressor, the first deformation portion B01 and the third deformation portion B03 of the first cylinder head 1 are in a separated state relative to the rest of the partition portion 200, and the second deformation portion B02 is in a fixed state relative to the rest of the partition portion 200.

[0108] Referring to Figure 4 or Figure 8 In the second stage compressor, the second deformation portion B02 of the second cylinder head 1 is in a separated state relative to the rest of the partition portion 200, and the first deformation portion B01 and the third deformation portion B03 are in a fixed state relative to the rest of the partition portion 200.

[0109] Referring to Figure 14 In the first stage compressor, the first cylinder cavity Q316 and the second cylinder cavity Q317 are first stage compression cavities, respectively;

[0110] Referring to Figure 7 , Figure 11 , Figure 14 and Figure 15 The first intake passage is composed of at least the first flow guide hole F205, the second chamber G02, the flow passage G08, the fifth chamber G05, and the first intake hole F201, wherein the first intake hole F201 is used to connect the fifth chamber G05 and the first cylinder cavity Q316; when a negative pressure lower than the atmospheric pressure is generated in the first cylinder cavity Q316, air is sucked from outside of the first stage compressor into the first cylinder cavity Q316 through the first intake passage;

[0111] It should be understood that the first valve plate assembly (not shown in the figure) is arranged in the first cylinder cavity Q316, and the first valve plate assembly covers the first intake hole F201, so that when a negative pressure lower than the atmospheric pressure is generated in the first cylinder cavity Q316, one side of the first valve plate assembly receives the atmospheric pressure and the other side of the second valve plate assembly receives the negative pressure, so that the second valve plate assembly is deformed to connect the fifth chamber G05 and the first cylinder cavity Q316; conversely, during the process of changing the negative pressure in the first cylinder cavity Q316 to a positive pressure higher than the atmospheric pressure, the stress of the second valve plate assembly itself makes the second valve plate assembly return to the initial state, and the initial state of the second valve plate assembly isolates the fifth chamber G05 and the first cylinder cavity Q316.

[0112] Referring to Figure 7 , Figure 11 , Figure 14 and Figure 15In the primary compressor, the seventh chamber G07 is communicated with the first cylinder chamber Q316 through the first gas outlet hole F202 of the valve plate 2, the seventh chamber G07 is communicated with the second gas chamber Q312 of the crankcase 3 through the first flow guide hole F205 of the valve plate 2, the second gas chamber Q312, the third gas chamber Q313 and the fourth gas chamber Q314 are communicated respectively, the third gas chamber Q313 is communicated with the first chamber G01 of the cylinder cover 1 through the third flow guide hole F207 of the valve plate 2, the first chamber G01 is communicated with the first gas outlet 300, so that the first gas outlet hole F202, the seventh chamber G07, the first flow guide hole F205, the second gas chamber Q312, the third gas chamber Q313, the third flow guide hole F207, the first chamber G01 and the first gas outlet 300 jointly form a first gas outlet channel; when the positive pressure higher than the atmospheric pressure is generated in the first cylinder chamber Q316, the compressed air in the first cylinder chamber Q316 is discharged to the outside of the primary compressor through the first gas outlet channel;

[0113] It should be understood that the second valve plate assembly (not shown in the figure) is arranged in the seventh chamber G07, the second valve plate assembly covers the first gas outlet hole F202, when the positive pressure higher than the atmospheric pressure is generated in the first cylinder chamber Q316, one side of the second valve plate assembly is subjected to the atmospheric pressure and the other side of the second valve plate assembly is subjected to the positive pressure, so that the second valve plate assembly is deformed to guide the seventh chamber G07 and the first cylinder chamber Q316; conversely, when the positive pressure in the first cylinder chamber Q316 changes to the atmospheric pressure or changes to the negative pressure lower than the atmospheric pressure, the stress of the second valve plate assembly itself makes the second valve plate assembly return to the initial state, and the initial state of the second valve plate assembly is used to isolate the seventh chamber G07 and the first cylinder chamber Q316.

[0114] Referring to Figure 7 、 Figure 11 、 Figure 14 and Figure 15 In the primary compressor, at least the second chamber G02, the flow passage G08, the fifth chamber G05, the fourth chamber G04 and the second gas inlet hole F203 of the valve plate 2 form a second gas inlet channel, and the second gas inlet hole F203 is used to communicate the fourth chamber G04 and the second cylinder chamber Q317; when the negative pressure lower than the atmospheric pressure is generated in the second cylinder chamber Q317, the air is sucked into the second cylinder chamber Q317 from the outside of the primary compressor through the second gas inlet channel;

[0115] It should be understood that a third valve plate assembly (not shown in the figure) is arranged in the second cylinder cavity Q317, and covers the second gas inlet hole F203, so that when the negative pressure lower than the atmospheric pressure is generated in the second cylinder cavity Q317, one side of the third valve plate assembly is subjected to the atmospheric pressure, and the other side of the third valve plate assembly is subjected to the negative pressure, so that the third valve plate assembly is deformed to connect the fourth cavity G04 and the second cylinder cavity Q317; conversely, when the negative pressure in the second cylinder cavity Q317 changes to the positive pressure higher than the atmospheric pressure, the stress of the third valve plate assembly itself makes the third valve plate assembly return to the initial state, and the third valve plate assembly in the initial state isolates the fourth cavity G04 and the second cylinder cavity Q317.

[0116] Referring to Figure 7 、 Figure 11 、 Figure 14 and Figure 15 , in the primary compressor, the third cavity G03 is communicated with the second cylinder cavity Q317 through the second gas outlet hole F204 of the valve plate 2, the third cavity G03 is communicated with the sixth cavity G06, the sixth cavity G06 is communicated with the fourth gas cavity Q314 of the crankcase 3 through the fourth flow guide hole F208 of the valve plate 2, the fourth gas cavity Q314, the third gas cavity Q313 and the second gas cavity Q312 are sequentially communicated, the third gas cavity Q313 is communicated with the first cavity G01 through the third flow guide hole F207 of the valve plate 2, and the first cavity G01 is communicated with the first gas outlet 300, so that the second gas outlet hole F204, the third cavity G03, the sixth cavity G06, the fourth flow guide hole F208, the fourth gas cavity Q314, the third gas cavity Q313, the third flow guide hole F207, the first cavity G01 and the first gas outlet 300 jointly form a second gas exhaust passage; when the positive pressure higher than the atmospheric pressure is generated in the second cylinder cavity Q317, the compressed air in the second cylinder cavity Q317 is discharged to the outside of the primary compressor through the second gas exhaust passage.

[0117] It should be understood that a fourth valve plate assembly (not shown in the figure) is arranged in the third cavity G03, and covers the second gas outlet hole F204, so that when the positive pressure higher than the atmospheric pressure is generated in the second cylinder cavity Q317, one side of the fourth valve plate assembly is subjected to the atmospheric pressure, and the other side of the fourth valve plate assembly is subjected to the positive pressure, so that the fourth valve plate assembly is deformed to connect the third cavity G03 and the second cylinder cavity Q317; conversely, when the positive pressure in the second cylinder cavity Q317 changes to the atmospheric pressure or changes to the negative pressure lower than the atmospheric pressure, the stress of the fourth valve plate assembly itself makes the fourth valve plate assembly return to the initial state, and the fourth valve plate assembly in the initial state is used to isolate the third cavity G03 and the second cylinder cavity Q317.

[0118] Referring to Figure 8 、 Figure 11 、 Figure 14 andFigure 15 In the two-stage compressor, the first cylinder cavity Q316 is a primary compression cavity, and the second cylinder cavity Q317 is a two-stage compression cavity;

[0119] Referring to Figure 8 , Figure 11 , Figure 14 and Figure 15 , the third air inlet passage is composed of at least the first flow guide hole F205, the second chamber G02, the flow passage G08, the fifth chamber G05, and the first air inlet hole F201 for connecting the fifth chamber G05 and the first cylinder cavity Q316; when a negative pressure lower than the atmospheric pressure is generated in the first cylinder cavity Q316, air is sucked from outside the primary compressor into the first cylinder cavity Q316 through the third air inlet passage;

[0120] It should be understood that the first valve plate assembly (not shown in the figure) is arranged in the first cylinder cavity Q316, and the first valve plate assembly covers the first air inlet hole F201. The structure, position, and connection relationship of the first valve plate assembly in the two-stage compressor are the same as those of the first valve plate assembly in the primary compressor, and the principle is the same. Here, no further description is given.

[0121] Referring to Figure 8 , Figure 11 , Figure 14 and Figure 15 , in the two-stage compressor, the seventh chamber G07 is communicated with the first cylinder cavity Q316 through the first air outlet hole F202 of the valve plate 2, and the seventh chamber G07 is communicated with the second air cavity Q312 of the crankcase 3 through the first flow guide hole F205 of the valve plate 2. The second air cavity Q312, the third air cavity Q313, and the fourth air cavity Q314 are communicated with each other. The fourth air cavity Q314 is communicated with the sixth chamber G06 through the fourth flow guide hole F208 of the valve plate 2. The sixth chamber G06 is communicated with the fourth chamber G04. The fourth chamber G04 is communicated with the second cylinder cavity Q317 through the second air inlet hole F203 of the valve plate 2. Therefore, the first air outlet hole F202, the seventh chamber G07, the first flow guide hole F205, the second air cavity Q312, the third air cavity Q313, the fourth air cavity Q314, the fourth flow guide hole F208, the sixth chamber G06, the fourth chamber G04, and the second air inlet hole F203 together form an inter-stage passage. For the first cylinder cavity Q316, the inter-stage passage is actually a third air outlet passage of the first cylinder cavity Q316. For the second cylinder cavity Q317, the inter-stage passage is actually a fourth air inlet passage of the second cylinder cavity Q317. When a positive pressure higher than the atmospheric pressure is generated in the first cylinder cavity Q316, and a negative pressure lower than the atmospheric pressure is generated in the second cylinder cavity Q317, the air in the first cylinder cavity Q316 forms primary compressed air, which is sucked into the second cylinder cavity Q317 through the inter-stage passage;

[0122] It should be understood that the second valve plate assembly (not shown in the figure) is arranged in the seventh chamber G07, and the third valve plate assembly is arranged in the fourth chamber G04; the structure, position and connection relationship, principle of the second valve plate assembly in the two-stage compressor are the same as those of the second valve plate assembly in the aforementioned first-stage compressor, which will not be described here; similarly, the structure, position and connection relationship, principle of the third valve plate assembly in the two-stage compressor are the same as those of the third valve plate assembly in the aforementioned first-stage compressor, which will not be described here.

[0123] Referring to Figure 2 , Figure 3 , Figure 7 and Figure 8 , in the two-stage compressor, the third chamber G03 communicates with the second cylinder chamber Q317 through the second gas outlet hole F204 of the valve plate 2, and the third chamber G03 communicates with the second gas outlet 400, so that the second gas outlet hole F204, the third chamber G03 and the second gas outlet 400 jointly form a fourth gas outlet channel; when the positive pressure higher than the atmospheric pressure is generated in the second cylinder chamber Q317, the air in the second cylinder chamber Q317 forms two-stage compressed air, and the two-stage compressed air is discharged to the outside of the two-stage compressor through the fourth gas outlet channel.

[0124] It should be understood that the fourth valve plate assembly (not shown in the figure) is arranged in the third chamber G03, and the structure, position and connection relationship, principle of the fourth valve plate assembly in the two-stage compressor are the same as those of the fourth valve plate assembly in the aforementioned first-stage compressor, which will not be described here.

[0125] Further, in the foregoing technical solution, since the cylinder cover 1 is made of the cylinder cover blank of the aforementioned embodiment 1, and the isolation part 200 between the first chamber G01 and the second chamber G02 of the cylinder cover blank is provided with the process hole 600, in order to avoid the air or compressed air flowing through the process hole 600 between the first chamber G01 and the second chamber G02, the following technical solution is preferably used to solve the problem.

[0126] Referring to Figure 1 , Figure 5 , Figure 8 or Figure 11 , the air compressor of the embodiment further comprises a first plugging part 4.

[0127] The process hole 600 is arranged on the cylinder cover 1, and the first plugging part 4 is used to seal the process hole 600.

[0128] The process hole 600 is sealed by the first blocking component 4, so that air in the second chamber G02 cannot flow to the first chamber G01, and compressed air in the first chamber G01 cannot flow to the second chamber G02.

[0129] Further, in the foregoing technical solution, it is proposed that in the primary compressor, the first exhaust passage and the second exhaust passage respectively discharge compressed air to the outside of the primary compressor through the first exhaust port 300, and in the secondary compressor, the fourth exhaust passage discharges secondary compressed air to the outside of the secondary compressor through the second exhaust port 400.

[0130] Since the second exhaust port 400 communicates with the third chamber G03, and the third chamber G03 is part of the second exhaust passage of the primary compressor, the second exhaust port 400 on the cylinder head 1 of the primary compressor needs to be blocked to prevent compressed air discharged from the second cylinder chamber Q317 from being discharged to the outside of the primary compressor through the second exhaust port 400.

[0131] Since the first exhaust port 300 communicates with the first chamber G01, and the first chamber G01 is part of the inter-stage passage of the secondary compressor, the first exhaust port 300 on the cylinder head 1 of the secondary compressor needs to be blocked to prevent primary compressed air discharged from the first cylinder chamber Q316 from leaking to the outside of the secondary compressor through the first exhaust port 300.

[0132] Referring to Figure 12 , Figure 6 or Figure 9 , the air compressor in the embodiment further comprises a second blocking component 5.

[0133] When the first deformation part B01 and the third deformation part B03 respectively form a separation state with the remaining isolation part 200, and the second deformation part B02 forms a fixed state with the remaining isolation part 200, the second blocking component 5 is used to seal the second exhaust port 400.

[0134] Alternatively, when the second deformation part B02 forms a separation state with the remaining isolation part 200, and the first deformation part B01 and the third deformation part B03 respectively form a fixed state with the remaining isolation part 200, the second blocking component 5 is used to seal the first exhaust port 300.

[0135] Sealing the first exhaust port 300 by the second blocking component 5 can prevent compressed air discharged from the first cylinder chamber Q316 of the primary compressor and compressed air discharged from the second cylinder chamber Q317 from leaking to the outside of the compressor through the second exhaust port 400, or can prevent primary compressed air discharged from the first cylinder chamber Q316 of the secondary compressor from leaking to the outside of the secondary compressor through the first exhaust port 300.

[0136] Further, in the foregoing technical solution, it has been proposed that in the primary compressor, the first exhaust passage and the second exhaust passage respectively pass through the third air cavity Q313, the third flow guide hole F207, the first chamber G01 and the first exhaust port 300 to discharge the compressed air to the outside of the primary compressor, and in the secondary compressor, the third exhaust passage (the fourth intake passage) passes through the second flow guide hole F206, the second air cavity Q312, the third air cavity Q313, the fourth air cavity Q314, the fourth flow guide hole F208, the sixth chamber G06 and the fourth chamber G04 to guide the primary compressed air into the second cylinder cavity Q317.

[0137] Since the third flow guide hole F207 communicates with the third air cavity Q313 and the first chamber G01 respectively, and the third air cavity Q313 is one part of the third exhaust passage (the fourth intake passage), it is necessary to block the third flow guide hole F207 on the cylinder cover 1 of the secondary compressor to avoid the primary compressed air discharged from the first cylinder cavity Q316 leaking into the first chamber G01 through the third flow guide hole F207.

[0138] Referring to Figure 14 or Figure 9 The air compressor of the embodiment further comprises a third blocking component 6.

[0139] When the second deformation part B02 is in a separated state from the rest of the isolation part 200, and the first deformation part B01 and the third deformation part B03 are respectively in a fixed state with the rest of the isolation part 200, the third blocking component 6 is used to seal the third flow guide hole F207.

[0140] Sealing the third flow guide hole F207 by the third blocking component 6 can avoid the primary compressed air discharged from the first cylinder cavity Q316 of the secondary compressor leaking into the first chamber G01 through the third flow guide hole F207, and further avoid the primary compressed air leaking to the outside of the secondary compressor through the first exhaust port 300.

[0141] It should be understood that in other embodiments, the third blocking component 6 can be omitted;

[0142] In the embodiment, by sealing the third flow guide hole F207 by the third blocking component 6 and sealing the first exhaust port 300 by the second blocking component 5, the primary compressed air discharged from the first cylinder cavity Q316 of the secondary compressor is blocked by the second blocking component 5 and the third blocking component 6 together, and thus the reliability of the secondary compressor of the embodiment in avoiding the primary compressed air leaking from the first exhaust port 300 to the outside is higher;

[0143] In other embodiments in which the third blocking member 6 is omitted, only the second blocking member 5 is needed to seal the first exhaust port 300, although the first compressed air can flow into the first chamber G01 through the third flow guide hole F207, the first exhaust port 300 blocks the first compressed air from leaking to the outside of the second compressor.

[0144] Further, referring to Figure 9 、 Figure 10 、 Figures 14 to 17 In the air compressor of the embodiment, the crankcase 3 is provided with two air inlets Q33, wherein the first air chamber Q311 is located between the two air inlets Q33, and the two air inlets Q33 are respectively communicated with the first air chamber Q311.

[0145] The first air chamber Q311 is provided with a plurality of first filter members Q34 manufactured by a powder metallurgy process (see Figure 16 ), wherein a part of the first filter members Q34 are located between one of the air inlets Q33 and the first flow guide hole F205, and another part of the first filter members Q34 are located between the other air inlet Q33 and the first flow guide hole F205.

[0146] The two air inlets Q33 are arranged in a facing and spaced manner, and any one of the air inlets Q33 respectively communicates the first air chamber Q311 with the atmosphere. When a negative pressure lower than the atmospheric pressure is generated in the first cylinder chamber Q316 or the second cylinder chamber Q317 of the first compressor or the second compressor, the air located outside the first compressor or the second compressor is respectively sucked into the first air chamber Q311 through the two air inlets Q33, and then the air located in the first air chamber Q311 is sucked into the first cylinder chamber Q316 through the first air inlet channel or the third air inlet channel, or the air located in the first air chamber Q311 is sucked into the second cylinder chamber Q317 through the second air inlet channel. In other words, the two air inlets Q33 are part of the first air inlet channel or the second air inlet channel or the third air inlet channel.

[0147] The first air chamber Q311 is provided with a plurality of first filter members Q34. In the first compressor or the second compressor, an external filter member located outside the first compressor or the second compressor is usually needed. If the external filter member fails, for example, the external filter member is a paper filter, the paper filter is soaked with water or the paper filter is damaged, and the external filter member fails, the plurality of first filter members Q34 located inside the first compressor or the second compressor can replace the external filter member to achieve the effect of filtering air.

[0148] The arrangement of the plurality of first filter members Q34 is preferably as follows:

[0149] Referring to Figure 6 In the direction from the crankcase 3 to the cylinder head 1, a plurality of first filter components Q34 are vertically arranged in the first air cavity Q311 of the crankcase 3, the bottom and the side of each first filter component Q34 are connected or closely contacted with the inner surface of the crankcase 3 respectively, and the top of each first filter component Q34 is spaced apart from the inner surface of the crankcase 3 respectively; any two adjacent first filter components Q34 are arranged parallel to each other; at least two of the plurality of first filter components Q34 are close to one of the intake ports Q33, and at least two of the plurality of first filter components Q34 are close to the other of the intake ports Q33.

[0150] With the above arrangement of the plurality of first components, on the one hand, most of the air sucked into the first air cavity Q311 is filtered by the plurality of first filter components Q34, and on the other hand, if the plurality of first filter components Q34 adsorb too many impurities and cause the pores of the plurality of first filter components Q34 to be blocked, the air can continue to flow through the gaps between the plurality of first filter components Q34 and the crankcase 3, ensuring the overall air intake function of the primary compressor or the secondary compressor; in addition, the plurality of first filter components Q34 arranged in the first air cavity Q311 also serve as noise reduction components in the first air cavity Q311, by changing the pulse frequency of the air along the direction from the intake port Q33 to the second cavity G02 through the flow of air through the filter components or the blocking of air by the filter components, thereby reducing the intake noise.

[0151] Since part of the first filter components Q34 are close to one of the intake ports Q33, and part of the first filter components Q34 are close to the other of the intake ports Q33, it is convenient for maintenance personnel to use a pneumatic cleaning device (such as a spray gun that sprays compressed air) to clean the first filter components Q34 through one of the intake ports Q33, and use the air pressure of the compressed air to make the impurities separate from the plurality of first filter components Q34, and with the flow of compressed air, the impurities separated from the plurality of first filter components Q34 are discharged from the other of the intake ports Q33.

[0152] The air outside the primary compressor or the secondary compressor is sucked into the first air cavity Q311 through the two intake ports Q33, and most of the air sucked into the first air cavity Q311 flows through the plurality of first filter components Q34, and a small part of the air flows through the gaps between the plurality of first filter components Q34 and the inner wall of the crankcase 3, then the air in the first air cavity Q311 flows into the second cavity G02 of the cylinder head 1 through the first flow guide hole F205 of the valve plate 2, and continues to flow along the first intake passage or the second intake passage or the third intake passage.

[0153] Further, referring to Figure 17The air compressor of the embodiment, the second air cavity Q312 and the third air cavity Q313 are separated by the second filter part 7 manufactured by adopting the powder metallurgy process, the third air cavity Q313 and the fourth air cavity Q314 are separated by the third filter part 8 manufactured by adopting the powder metallurgy process;

[0154] The first flow port Q21 is formed between the second filter part 7 and the isolation plate Q31, the second flow port Q22 is formed between the third filter part 8 and the isolation plate Q31, the second air cavity Q312 and the third air cavity Q313 form the communicating state through the first flow port Q21, and the third air cavity Q313 and the fourth air cavity Q314 form the communicating state through the second flow port Q22.

[0155] From the overall structure of the crankcase 3, the second filter part 7 and the third filter part 8 serve as the isolation part for separating the second air cavity Q312, the third air cavity Q313 and the fourth air cavity Q314;

[0156] From the perspective of the flow of compressed air, in the primary compressor, the communicating place of the first exhaust passage and the second exhaust passage is located in the second air cavity Q312 of the crankcase 3, then the second filter part 7 is essentially used for filtering the compressed air flowing through the first exhaust passage, and the second filter part 7 is essentially used for filtering the compressed air flowing through the second exhaust passage;

[0157] From the perspective of the flow of compressed air, in the secondary compressor, the second air cavity Q312, the third air cavity Q313 and the fourth air cavity Q314 are respectively one part of the inter-stage passage, and the second filter part 7 and the third filter part 8 are essentially used for filtering the compressed air flowing through the inter-stage passage;

[0158] From the perspective of reducing noise, the second filter part 7 and the third filter part 8 respectively have the same noise reduction effect as the aforementioned first filter part Q34, specifically, in the primary compressor, the second filter part 7 and the third filter part 8 are used for reducing the noise of the compressed air discharged from the primary compressor, and in the secondary compressor, the second filter part 7 and the third filter part 8 are used for reducing the noise of the compressed air flowing in the first cylinder cavity Q316 to the second cylinder cavity Q317.

[0159] Further, referring to Figure 16 The air compressor of the embodiment, the first cylinder cavity Q316 and the second cylinder cavity Q317 are surrounded by the oil guide cavity Q315;

[0160] Further comprising an oil pump 9, an oil outlet passage 10 and an oil inlet passage 11;

[0161] The oil pump 9 is arranged in the crankcase 3, and the oil outlet passage 10 communicates with the oil guide cavity Q315, wherein the oil outlet passage 10 forms an oil outlet with the isolation plate Q31;

[0162] The oil inlet channel 11 is in communication with the second space;

[0163] The oil outlet channel 10 and the oil inlet channel 11 are respectively in communication with the oil pump 9.

[0164] In the embodiment, since the first cylinder cavity Q316 and the second cylinder cavity Q317 are respectively arranged in the crankcase 3, when the compressed air is generated in the first cylinder cavity Q316 and the second cylinder cavity Q317, cooling treatment needs to be considered for the first cylinder cavity Q316 and the second cylinder cavity Q317 to reduce the temperature of the compressed air.

[0165] In the embodiment, the oil cooling mode is used for the cooling treatment of the first cylinder cavity Q316 and the second cylinder cavity Q317. Specifically, the lubricating oil is injected into the oil guide cavity Q315 surrounding the first cylinder cavity Q316 and the second cylinder cavity Q317 by the oil pump 9, the lubricating oil contacts the outer wall of the first cylinder cavity Q316 and the outer wall of the second cylinder cavity Q317 to form heat exchange, the heat of the first cylinder cavity Q316 and the heat of the second cylinder cavity Q317 are absorbed by the lubricating oil in the oil guide cavity Q315, and the lubricating oil is continuously injected into the oil guide cavity Q315 by the oil pump 9 and continuously discharged from the oil guide cavity Q315, so that the lubricating oil flows out of the oil guide cavity Q315 after absorbing the heat of the two cylinder cavities and is naturally cooled.

[0166] In the embodiment, the oil pump 9 is a bidirectional oil pump 9 with an eccentric gear. The bidirectional oil pump 9 can rotate clockwise or counterclockwise, but the bidirectional oil pump 9 can only draw and discharge the lubricating oil from the bidirectional oil pump 9 in the direction from the oil inlet channel to the oil outlet channel. The specific structure of the bidirectional oil pump 9 is known to those skilled in the art, for example, the oil pump 9 in the patent document with the title of an all-aluminum energy-saving air compressor and the application number of 202411246242.9 can be used as the oil pump 9 in the embodiment, and the rest will not be described here.

[0167] Further, referring to ​ The air compressor of the embodiment further comprises a crankshaft 12, a first connecting rod 13, a second connecting rod 14 and a lubricating channel 15.

[0168] The first connecting rod 13 and the second connecting rod 14 are respectively hinged to the crankshaft 12, the first connecting rod 13 extends in the direction from the crankshaft 12 to the first cylinder cavity Q316, and the second connecting rod 14 extends in the direction from the crankshaft 12 to the second cylinder cavity Q317.

[0169] The crankshaft 12 is provided with a crankshaft oil passage 16, the gap between the first connecting rod 13 and the crankshaft 12 is a first gap, the gap between the second connecting rod 14 and the crankshaft 12, the lubricating passage 15 is communicated with the crankshaft oil passage 16, wherein the lubricating passage 15 penetrates the isolation plate Q31, one end of the lubricating passage 15 is communicated with the oil guide cavity Q315.

[0170] In the embodiment, the crankshaft 12 is provided with a crankshaft oil passage 16, the purpose of which is to introduce external lubricating oil into the crankshaft oil passage 16 for lubricating the articulated portion formed by the crankshaft 12 and the first connecting rod 13, and for lubricating the articulated portion formed by the crankshaft 12 and the second connecting rod 14; in addition, through the centrifugal force generated by the rotation of the crankshaft 12, the lubricating oil in the crankshaft oil passage 16 can be splashed from the gap between the crankshaft 12 and the first connecting rod 13, and from the gap between the crankshaft 12 and the second connecting rod 14, through the centrifugal force, which causes the lubricating oil to be splashed to the inner wall of the first cylinder cavity Q316 and the inner wall of the second cylinder cavity Q317, thereby lubricating the gap between the first piston connected to the first connecting rod 13 and the first cylinder cavity Q316, and lubricating the gap between the second piston connected to the second connecting rod 14 and the second cylinder cavity Q317.

[0171] The lubricating passage 15 is communicated with the aforementioned oil guide cavity Q315, wherein the lubricating passage 15 forms two port portions with the crankcase 3, the port portion located at the upper portion is exposed in the oil guide cavity Q315, and the port portion located at the lower portion is not exposed in the oil guide cavity Q315 and is communicated with the crankshaft oil passage 16, a part of the lubricating oil in the oil guide cavity Q315 flows into the crankshaft oil passage 16 on the crankshaft 12 through the lubricating passage 15.

[0172] Further, referring to ​ or ​ , the air compressor of the embodiment further comprises a filter 17 for filtering lubricating oil;

[0173] The filter seat is arranged on the crankcase 3, and the filter 17 is detachably arranged on the filter seat, wherein the filter seat is provided with a first oil guide passage 18 and a second oil guide passage 19, the first oil guide passage 18 is respectively communicated with the oil guide cavity Q315 and the filter 17, and the second oil guide passage 19 is respectively communicated with the filter 17 and the second space.

[0174] The filter 17 can adopt various filters 17 in the prior art, which will not be described here. The lubricating oil in the oil guide cavity Q315 flows into the filter 17 through the first oil guide passage 18, and the lubricating oil is filtered by the filter 17 and then flows out of the filter 17 through the second oil guide passage 19; the impurities contained in the lubricating oil are filtered by the filter 17 and retained in the filter 17, which can be cleaned by maintenance personnel on a regular basis.

[0175] Further, referring to​ The air compressor of the embodiment is provided with an oil storage groove 20 at the bottom of the second space.

[0176] The bottom of the crankcase 3 is provided with a heat dissipation rib 21.

[0177] The oil storage groove 20 is located at the bottom of the second space of the crankcase 3, and the oil storage groove 20 stores lubricating oil.

[0178] In the foregoing scheme, the lubricating oil flowing out of the filter 17 through the second oil guide channel 19 flows into the oil storage groove 20, and in the foregoing scheme, the lubricating oil discharged from the gap between the first connecting rod 13 and the crankshaft 12 and the lubricating oil discharged from the gap between the second connecting rod 14 and the crankshaft 12 respectively fall into the oil storage groove 20 under the action of gravity; and in the foregoing scheme, the lubricating oil in the oil storage groove 20 is drawn by the oil pump 9 and the oil inlet channel 11; in the above manner, the oil storage groove 20, the oil inlet channel 11, the oil pump 9, the oil outlet channel 10, the oil guide cavity Q315, the first oil guide channel 18, the filter 17 and the second oil guide channel 19 together constitute a first lubricating oil circulation path, and the oil storage groove 20, the oil inlet channel 11, the oil pump 9, the oil outlet channel 10, the oil guide cavity Q315, the lubricating channel 15, the crankshaft oil passage 16, the gap between the crankshaft 12 and the first connecting rod 13 and the gap between the crankshaft 12 and the second connecting rod 14 together constitute a second lubricating oil circulation path.

[0179] When the lubricating oil flows through the oil guide cavity Q315, the lubricating oil absorbs the heat of the first cylinder cavity Q316 and the second cylinder cavity Q317, so that the temperature of the lubricating oil increases, and after the lubricating oil flows from the oil guide cavity Q315 to the oil storage groove 20, the lubricating oil in the oil storage groove 20 exchanges heat with the atmosphere through the crankcase 3, thereby reducing the temperature of the lubricating oil in the oil storage groove 20.

[0180] By providing the heat dissipation rib 21 at the bottom of the crankcase 3, the contact area of the crankcase 3 with the atmosphere is increased, which is conducive to improving the heat dissipation efficiency of the lubricating oil in the oil storage groove 20.

[0181] In addition to the foregoing, the air compressor in the present embodiment is provided with a breathing hole in the crankcase 3; the breathing hole is provided on the partition plate Q31 of the crankcase 3, and the first air cavity Q311 of the first space is communicated with the second space through the breathing hole; when the lubricating oil absorbs the heat of the first cylinder cavity Q316 and the second cylinder cavity Q317 and flows into the oil sump 20, the temperature of the lubricating oil in the oil sump 20 causes the air pressure in the second space to increase, and the air in the second space is guided into the first air cavity Q311 through the breathing hole to keep the air pressure in the second space in a balanced state; conversely, when the lubricating oil in the oil sump 20 cools down, the temperature of the air in the second space decreases, and the air outside the air compressor is introduced into the second space through the air inlet Q33, the first air cavity Q311 and the breathing hole to keep the air pressure in the second space in a balanced state.

[0182] In addition, as mentioned in the foregoing, the first air cavity Q311 is provided with a plurality of first filter components Q34, and the air outside the air compressor contains water vapor, which can be filtered by the first filter components Q34, wherein when the air flows through the first filter components Q34, the water vapor adheres to the first filter components Q34 to form condensed water; the condensed water flows and accumulates in the first air cavity Q311 under the action of gravity; in order to avoid excessive accumulation of condensed water in the first air cavity Q311, the condensed water in the first air cavity Q311 is guided into the second space through the breathing hole, so that the condensed water falls into the oil sump 20 under the action of gravity.

[0183] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation or direct or indirect application in other related technical fields based on the content of the present application specification and drawings is also included in the patent protection scope of the present application.

Claims

1. A common cylinder head blank, characterized in that The cover-shaped part and the isolation part are included. The cover-shaped part is provided with a first exhaust port, a second exhaust port, an inner cavity and a mounting surface for covering the valve plate, the profile of the inner cavity intersects with the mounting surface to form a cover port, and the first exhaust port and the second exhaust port are respectively used to communicate the outside of the cover-shaped part and the inner cavity. The isolation part is arranged in the inner cavity, and the inner cavity is separated into a first chamber, a second chamber, a third chamber, a fourth chamber, a fifth chamber, a sixth chamber and a seventh chamber by the isolation part, wherein the first exhaust port communicates with the first chamber, the second exhaust port communicates with the third chamber, and the first chamber to the fifth chamber are sequentially and mutually isolated by the isolation part along the direction of the long side of the mounting surface, and the sixth chamber and the seventh chamber together constitute a semi-enclosed structure for surrounding the first chamber to the fifth chamber. A flow passage is arranged between the second chamber and the fifth chamber, and the flow passage communicates with the second chamber and the fifth chamber respectively, and the flow passage forms an isolated state with the third chamber and the fourth chamber respectively. A first part of the isolation part between the sixth chamber and the third chamber is defined as a first variable part, a second part of the isolation part between the sixth chamber and the fourth chamber is defined as a second variable part, and a third part of the isolation part between the fifth chamber and the fourth chamber is defined as a third variable part, and the first variable part, the second variable part and the third variable part have a fixed state and a separated state relative to the remaining isolation parts, and the first variable part, the second variable part and the third variable part are configured to be selected to change from the fixed state to the separated state.

2. An air compressor characterized by, The cylinder head, the valve plate and the crankcase are included. The cylinder head is made of the common cylinder head blank as claimed in claim 1; The valve plate is provided with a first air inlet hole, a first air outlet hole, a second air inlet hole, a second air outlet hole, a first flow guide hole, a second flow guide hole, a third flow guide hole and a fourth flow guide hole; The crankcase is provided with an isolation plate, and the space in the crankcase is divided into a first space and a second space by the isolation plate, the crankcase is provided with a positioning surface for being covered by the valve plate, the first space is located between the positioning surface and the isolation plate, the profile of the first space intersects with the profile of the positioning surface to form an opening part, and the first space is separated into a first air cavity, a second air cavity, a third air cavity, a fourth air cavity, an oil guide cavity, a first cylinder cavity and a second cylinder cavity by a plurality of partition plates. When one side of the valve plate covers the mounting surface and the other side of the valve plate covers the positioning surface, the first intake hole is communicated with the first cylinder cavity and the fifth cavity, the first exhaust hole is communicated with the first cylinder cavity and the seventh cavity, the second intake hole is communicated with the second cylinder cavity and the fourth cavity, the second exhaust hole is communicated with the second cylinder cavity and the third cavity, the first flow guide hole is communicated with the first air cavity and the second cavity, the second flow guide hole is communicated with the second air cavity and the seventh cavity, and the third flow guide hole is communicated with the third air cavity and the first cavity, and the fourth flow guide hole is communicated with the fourth air cavity and the sixth cavity; The first variable portion and the third variable portion are respectively separated from the rest of the isolation portions, and the second variable portion is fixed to the rest of the isolation portions; Alternatively, the second variable portion is separated from the rest of the isolation portions, and the first variable portion and the third variable portion are respectively fixed to the rest of the isolation portions.

3. The air compressor of claim 2, wherein, Further comprising a first blocking component; The cylinder head is provided with a process hole, and the first blocking component is used to seal the process hole; Further comprising a second blocking component; When the first variable portion and the third variable portion are respectively separated from the rest of the isolation portions, and the second variable portion is fixed to the rest of the isolation portions, the second blocking component is used to seal the second exhaust port; Alternatively, when the second variable portion is separated from the rest of the isolation portions, and the first variable portion and the third variable portion are respectively fixed to the rest of the isolation portions, the second blocking component is used to seal the first exhaust port.

4. The air compressor of claim 3, wherein, Further comprising a third blocking component; When the second variable portion is separated from the rest of the isolation portions, and the first variable portion and the third variable portion are respectively fixed to the rest of the isolation portions, the third blocking component is used to seal the third flow guide hole.

5. The air compressor of claim 2, wherein, The cylinder head is provided with two intake ports, wherein the first air cavity is located between the two intake ports, and the two intake ports are respectively communicated with the first air cavity; The first air cavity is provided with a plurality of first filter components manufactured by a powder metallurgy process, wherein a part of the first filter components is located between one of the intake ports and the first flow guide hole, and another part of the first filter components is located between the other intake port and the first flow guide hole.

6. The air compressor of claim 2, wherein, The second air cavity and the third air cavity are separated by a plurality of second filter components manufactured by a powder metallurgy process, and the third air cavity and the fourth air cavity are separated by a plurality of third filter components manufactured by a powder metallurgy process; The second filter component and the isolation plate form a first flow port, the third filter component and the isolation plate form a second flow port, the second air cavity and the third air cavity are in communication through the first flow port, and the third air cavity and the fourth air cavity are in communication through the second flow port.

7. The air compressor of claim 2, wherein, The first cylinder cavity and the second cylinder cavity are surrounded by the oil guide cavity. Further comprising an oil pump, an oil outlet channel and an oil inlet channel; The oil pump is arranged in the crankcase, the oil outlet channel is in communication with the oil guide cavity, and the oil outlet channel and the isolation plate form an oil outlet port. The oil inlet channel is in communication with the second space. The oil outlet channel and the oil inlet channel are respectively in communication with the oil pump.

8. The air compressor of claim 7, wherein, Further comprising a crankshaft, a first connecting rod, a second connecting rod and a lubricating channel; The first connecting rod and the second connecting rod are respectively hinged to the crankshaft, the first connecting rod extends along the direction from the crankshaft to the first cylinder cavity, and the second connecting rod extends along the direction from the crankshaft to the second cylinder cavity; The crankshaft is provided with a crankshaft oil channel, the gap between the first connecting rod and the crankshaft is a first gap, the gap between the second connecting rod and the crankshaft is a second gap, the lubricating channel is in communication with the crankshaft oil channel, one end of the lubricating channel penetrates the isolation plate, and the other end of the lubricating channel is in communication with the oil guide cavity.

9. The air compressor of claim 7, wherein, Further comprising a filter for filtering lubricating oil; The crankcase is provided with a filter seat, and the filter is detachably arranged on the filter seat, wherein the filter seat is provided with a first oil guide channel and a second oil guide channel, the first oil guide channel is respectively in communication with the oil guide cavity and the filter, and the second oil guide channel is respectively in communication with the filter and the second space.

10. The air compressor of claim 7, wherein, The bottom of the second space is provided with an oil storage groove; The bottom of the crankcase is provided with a heat dissipation rib.

Images