Integrated oilless air compressor

Abstract

The utility model relates to the field of air compressors, in particular to an integrated oilless air compressor which comprises an air storage mechanism, a driving mechanism and two sets of crank shaft boxes, the driving mechanism is connected with the two sets of crank shaft boxes, at least one air cylinder is arranged on the outer side of each crank shaft box, and the air cylinder corresponding to each set of crank shaft box communicates with the air storage mechanism through an air inlet pipe. The gas storage mechanism is used for collecting high-low pressure gas compressed by the cylinder; the air storage mechanism is used as a supporting leg of the driving mechanism, so that the air storage mechanism, the driving mechanism and the two crank cases are arranged more densely, the pipeline can be conveniently connected to the air storage mechanism, the size of the pipeline between the air cylinder and the air storage mechanism is also greatly reduced, and the overall space utilization rate is higher; the air storage mechanism is detachably mounted below the driving mechanism, so that a reserved space is formed at the bottoms of the two groups of crank shaft boxes, optimization of air cylinders of the two groups of crank shaft boxes is facilitated, the air compression amount can be greatly increased, and meanwhile, the design requirement for overall miniaturization is met.

Description

Technical Field

[0001] This application relates to the field of air compressors, and specifically to an integrated oil-free air compressor. Background Technology

[0002] Oil-free air compressors are miniature reciprocating compressors with a single-shaft motor driving a symmetrically distributed crank-rocker mechanical structure. The main moving pair is a piston ring, and the secondary moving pair is an aluminum alloy cylindrical surface. The moving pairs are self-lubricated by the piston ring without the addition of any lubricant.

[0003] The compressor causes the volume of the cylindrical cylinder to change periodically through the reciprocating motion of the crankshaft and rocker arm. With each revolution of the motor, the cylinder volume changes in opposite directions twice. When the positive direction is the expansion direction of the cylinder volume, the cylinder volume is a vacuum, atmospheric pressure is greater than the internal pressure, and air enters the cylinder through the intake valve—this is the intake process. When the negative direction is the contraction direction of the volume, the gas entering the cylinder is compressed, and the internal pressure increases rapidly. When it exceeds atmospheric pressure, the exhaust valve opens—this is the exhaust process.

[0004] It is known that most existing air storage mechanisms are external, and the number of cylinders is limited by the arrangement of the drive mechanism and crankcase. This results in a large overall size of the air compressor, a small number of cylinders that can be installed, low utilization of the intake space, and large pipeline size with high cost. Utility Model Content

[0005] To solve, or at least partially solve, the aforementioned technical problems, this application provides an integrated oil-free air compressor, comprising:

[0006] The drive mechanism and two sets of crankcases are respectively located on opposite sides of the drive mechanism;

[0007] An air storage mechanism is detachably installed below the drive mechanism to create a reserved space at the bottom of the two sets of crankcases;

[0008] The drive mechanism is connected to two sets of crankcases respectively. Each crankcase has at least one cylinder on its outer side. The cylinder corresponding to each set of crankcases is connected to the gas storage mechanism through an air intake pipe. The gas storage mechanism is used to collect the high-pressure and / or low-pressure gas after compression by the cylinder.

[0009] The gas storage mechanism is provided with a first support at its bottom, which is used to support the gas storage mechanism.

[0010] Optionally, a second support is provided in the reserved space at the bottom of each crankcase, and the first support of the gas storage mechanism and the two second supports of the two sets of crankcases cooperate to support the gas storage mechanism and the crankcase.

[0011] Optionally, the drive mechanism is provided with mounting plates on opposite sides, and the mounting plates are connected to the gas storage mechanism through threaded connectors.

[0012] Optionally, each crankcase is provided with at least two cylinders, and the at least two cylinders of each crankcase are evenly distributed around its circumference.

[0013] Optionally, a filter canister is provided on one side of at least one of the at least two cylinders corresponding to each crankcase, the filter canister being used to filter the gas entering the cylinder;

[0014] The crankcase is provided with a collection chamber on the side opposite to the drive mechanism, and at least one of the at least two cylinders is in communication with the collection chamber.

[0015] Optionally, a fan is provided on one side of the crankcase. The gas drawn in by the fan flows to the collection chamber and then from the collection chamber to the corresponding cylinder for compression.

[0016] Optionally, the two crankcases are arranged symmetrically relative to the drive mechanism.

[0017] Optionally, the gas storage mechanism is provided with at least two connecting ports on the top of each of its opposite sides along its length, and the cylinder corresponding to each crankcase is connected to the connecting port through the air intake pipe.

[0018] Optionally, each crankcase may be provided with at least three cylinders;

[0019] The reserved space at the bottom of each crankcase is at least greater than the volume of one of the cylinders.

[0020] Optionally, the gas storage mechanism includes a high-pressure gas storage chamber and a low-pressure gas storage chamber arranged at intervals, wherein the high-pressure gas storage chamber and the low-pressure gas storage chamber are not connected.

[0021] The integrated oil-free air compressor provided in this application has crankcases on opposite sides of the drive mechanism and an air storage mechanism at the bottom of the drive mechanism. The air storage mechanism serves as a support foot for the drive mechanism, resulting in a denser arrangement of the air storage mechanism, drive mechanism, and two crankcases. Piping can be easily connected to the air storage mechanism, and the pipe size between the cylinder and the air storage mechanism is significantly reduced, lowering pipe costs and improving overall space utilization. The air storage mechanism is detachably installed below the drive mechanism, creating reserved space at the bottom of the two crankcases. This facilitates cylinder optimization for the two crankcases, significantly increasing air compression while meeting the overall miniaturization design requirements.

[0022] Because the gas storage mechanism raises the drive mechanism, there is space available in the lower middle part of the crankcase, which increases the number of cylinders that can be installed and provides greater flexibility in installation. Attached Figure Description

[0023] To more clearly illustrate the embodiments of this application, the relevant drawings will be briefly described below. It is understood that the drawings described below are only for illustrating some embodiments of this application, and those skilled in the art can obtain many other technical features and connections not mentioned herein based on these drawings.

[0024] Figure 1 This is a front view of the integrated oil-free air compressor of this application;

[0025] Figure 2 for Figure 1 An exploded structural diagram of an integrated oil-free air compressor;

[0026] Figure 3 for Figure 1 A schematic diagram of the air storage mechanism of a medium-sized integrated oil-free air compressor.

[0027] Explanation of reference numerals in the attached figures:

[0028] 10. Gas storage mechanism; 110. First support; 120. Pipe inlet; 130. High-pressure gas storage chamber; 140. Low-pressure gas storage chamber;

[0029] 20. Drive mechanism; 210. Mounting plate;

[0030] 30. Crankcase; 310. Cylinder; 320. Intake pipe; 330. Second support; 340. Filter canister; 350. Collection chamber; 360. Fan. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0034] The technical solutions in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0035] Please refer to Figures 1 to 3 This embodiment provides an integrated oil-free air compressor, including an air storage mechanism 10, a drive mechanism 20, and two sets of crankcases 30. The two sets of crankcases 30 are respectively located on opposite sides of the drive mechanism 20. The drive mechanism 20 is detachably installed on the upper part of the air storage mechanism 10 and connected to the two sets of crankcases 30 respectively. At least one cylinder 310 is provided on the outside of each crankcase 30. The cylinder 310 corresponding to each set of crankcases 30 is connected to the air storage mechanism 10 through an air inlet pipe 320. The air storage mechanism 10 is used to collect high-pressure and / or low-pressure gas compressed by the cylinder 310.

[0036] In this embodiment, the gas storage mechanism 10 is detachably installed below the drive mechanism 20 to serve as the bottom support foot of the drive mechanism 20. The gas storage mechanism 10 also creates a reserved space at the bottom of the two crankcases 30, which is beneficial for the position and shape design of the crankcases 30 and the cylinders 310.

[0037] The gas storage mechanism 10 has a first support 110 at its bottom, which supports the gas storage mechanism 10 in order to support the entire drive mechanism 20.

[0038] It should be noted that this application is used for air compressors with large air storage capacity, and the air storage mechanism 10 is set below the drive mechanism 20. The first support 110 supports the air storage mechanism 10 and the drive mechanism 20, and the two crankcases 30 are set on opposite sides of the drive mechanism 20. This arrangement makes the overall layout of the air compressor more compact and the space utilization rate higher. The pipelines at various positions of the crankcase 30 can be easily connected to the air storage mechanism 10, which facilitates the pipeline layout. This also greatly reduces the pipeline size between the cylinder 310 and the air storage mechanism 10, thus reducing the pipeline installation cost.

[0039] Moreover, because the gas storage mechanism 10 raises the drive mechanism 20, there is a reserved space in the lower middle part of the crankcase 30 for setting cylinders 310. As a result, more cylinders 310 can be set in each crankcase 30, the gas compression efficiency is higher, and the setting flexibility of cylinders 310 is better.

[0040] Reference Figure 2 Each crankcase 30 has a second support 330 at its bottom. The first support 110 of the gas storage mechanism 10 and the two second supports 330 of the two crankcases 30 cooperate to support the gas storage mechanism 10 and the drive mechanism 20.

[0041] That is, the crankcase 30 and the drive mechanism 20 are supported by a first support 110 and two second supports 330.

[0042] The first support 110 and the second support 330 can raise the crankcase 30, thus leaving enough space below the drive mechanism 20 and the crankcase 30 to install the cylinders 310. As a result, each crankcase 30 can accommodate more cylinders 310, and the arrangement of the cylinders 310 is more flexible.

[0043] Please continue to refer to Figure 2 The drive mechanism 20 has mounting plates 210 on both sides, and the mounting plates 210 are connected to the gas storage mechanism 10 through threaded connectors.

[0044] Threaded fasteners can be, but are not limited to, bolts and screws; no specific restrictions are imposed here.

[0045] The installation method between the drive mechanism 20 and the gas storage mechanism 10 can also be snap-fit, welding, etc., which is not limited here.

[0046] In one embodiment, each crankcase 30 is provided with at least two cylinders 310, and the at least two cylinders 310 of each crankcase 30 are evenly distributed around its circumference.

[0047] The number of cylinders 310 can be two, three, or more, and the specific number is not limited here.

[0048] Furthermore, at least one of the at least two cylinders 310 corresponding to each crankcase 30 is provided with a filter canister 340 on one side, the filter canister 340 is used to filter the gas entering the cylinder 310; a collection chamber 350 is provided on the side of the crankcase 30 away from the drive mechanism 20, and at least one of the at least two cylinders 310 is connected to the collection chamber 350.

[0049] That is, a filter canister 340 is provided on one side of some cylinders 310. The internal space of the filter canister 340 is larger than that of the pipeline. Therefore, the pressure is reduced after the air enters the filter canister 340, so that the moisture in the air remains in the filter canister 340 and does not enter the cylinder 310, thereby ensuring the operational stability of the cylinder 310.

[0050] The collecting chamber 350 can be annular and integrally formed with the crankcase 30.

[0051] In one embodiment, a fan 360 is provided on one side of the crankcase 30. The gas drawn in by the fan 360 flows to the collection chamber 350 and then flows from the collection chamber 350 to the corresponding cylinder 310 for compression.

[0052] The following explanation uses a crankcase 30 with six cylinders 310 as an example:

[0053] Each of the two cylinders 310 has a filter canister 340 on one side, and the other four are connected to the collection chamber 350. The filter canister 340 is connected to an external air passage, which draws gas to the filter canister 340, where it is compressed by the cylinder 310 and then flows to the air storage mechanism 10. The gas drawn in by the fan 360 flows to the collection chamber 350, where it is then distributed to different cylinders 310 for compression before finally reaching the air storage mechanism 10.

[0054] Please refer to Figure 2 and Figure 3 The gas storage mechanism 10 includes a high-pressure gas storage chamber 130 and a low-pressure gas storage chamber 140 arranged at intervals, and the high-pressure gas storage chamber 130 and the low-pressure gas storage chamber 140 are not connected to each other.

[0055] In this way, the gas storage mechanism 10 can store high-pressure gas and low-pressure gas, and then the compressed gas of different pressures can be drawn out for use through pipelines.

[0056] In one embodiment, the two crankcases 30 are symmetrically arranged relative to the drive mechanism 20.

[0057] Thus, one crankcase 30 can be used to compress high-pressure gas, and the compressed high-pressure gas flows to the high-pressure gas storage chamber 130 in the gas storage mechanism 10. The other crankcase 30 can be used to compress low-pressure gas, and the compressed low-pressure gas flows to the low-pressure gas storage chamber 140 in the gas storage mechanism 10.

[0058] Alternatively, some cylinders 310 in one crankcase 30 compress high-pressure gas, while other cylinders 310 compress low-pressure gas. The high-pressure gas in both crankcases 30 flows to the high-pressure storage chamber 130, while the resulting low-pressure gas flows to the low-pressure storage chamber 140.

[0059] In one embodiment, the gas storage mechanism 10 is provided with at least two connecting ports 120 on the top of opposite sides along its length, and the cylinder 310 corresponding to each crankcase 30 is connected to the connecting port 120 through the intake pipe 320.

[0060] The intake pipe 320 and the connecting port 120 can be connected by means of socketing, snap-fitting, threaded connection, etc., and no limitation is made here.

[0061] In one embodiment, the number of cylinders 310 corresponding to each crankcase 30 is at least three; the bottom space of each crankcase 30 is at least larger than the volume of one cylinder 310.

[0062] It is known that the bottom of the traditional crankcase 30 is very close to the ground, or directly attached to the floor. As a result, there is no space to install cylinders 310 at the bottom of the crankcase 30. Cylinders 310 can only be installed on the side and top of the crankcase 30. Due to the size of cylinders 310, the number of cylinders 310 that can be installed in each crankcase 30 is limited, and the gas compression efficiency is low.

[0063] Based on this, the gas storage mechanism 10 is set at the bottom of the drive mechanism 20. The first support 110 and the second support 330 together support and raise the drive mechanism 20, thereby expanding the space at the bottom of the crankcase 30 and the drive mechanism 20 and increasing the distance between the middle of the crankcase 30 and the floor. As a result, the cylinder 310 can be set along the periphery of the crankcase 30, which increases the number of cylinders 310 that can be set in the crankcase 30. On the other hand, the setting of the position of the cylinder 310 is also more flexible.

[0064] In summary, the integrated oil-free air compressor provided in this application uses the air storage mechanism 10 as the support foot of the drive mechanism 20, which makes the arrangement of the air storage mechanism 10, the drive mechanism 20 and the two crankcases 30 more dense and the overall space utilization rate is higher. Moreover, because of the dense overall arrangement, the pipe size between the cylinder 310 and the air storage mechanism 10 is also greatly reduced, which reduces the pipe installation cost.

[0065] Moreover, this application sets two crankcases 30, which can greatly increase the air compression capacity while meeting the overall miniaturization design requirements. The symmetrical arrangement also ensures the overall stability of the air compressor operation.

[0066] Because the gas storage mechanism 10 raises the drive mechanism 20, there is space available in the lower middle part of the crankcase 30, thereby increasing the number of cylinders 310 that can be installed and improving the flexibility of installation.

[0067] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0068] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An integrated oil-free air compressor, characterized in that, include: The drive mechanism (20) and two sets of crankcases (30) are respectively located on opposite sides of the drive mechanism (20); The gas storage mechanism (10) is detachably installed below the drive mechanism (20) so that the bottom of the two sets of crankcases (30) forms a reserved space; The drive mechanism (20) is connected to two sets of crankcases (30) respectively. Each crankcase (30) is provided with at least one cylinder (310) on its outer side. The cylinder (310) corresponding to each set of crankcases (30) is connected to the gas storage mechanism (10) through the air intake pipe (320). The gas storage mechanism (10) is used to collect the high pressure and / or low pressure gas after the cylinder is compressed. The gas storage mechanism (10) is provided with a first support (110) at the bottom, and the first support (110) is used to support the gas storage mechanism (10).

2. The integrated oil-free air compressor according to claim 1, characterized in that, A second support (330) is provided in the reserved space at the bottom of each crankcase (30). The first support (110) of the gas storage mechanism (10) and the two second supports (330) of the two sets of crankcases (30) cooperate to support the gas storage mechanism (10) and the crankcase (30).

3. The integrated oil-free air compressor according to claim 1, characterized in that, The drive mechanism (20) has mounting plates (210) on both sides, and the mounting plates (210) are connected to the gas storage mechanism (10) through threaded connectors.

4. The integrated oil-free air compressor according to claim 1, characterized in that, Each crankcase (30) is provided with at least two cylinders (310), and the at least two cylinders (310) of each crankcase (30) are evenly distributed around its circumference.

5. The integrated oil-free air compressor according to claim 4, characterized in that, Each crankcase (30) has a filter canister (340) provided on one side of at least one of the at least two cylinders (310) corresponding to it, the filter canister (340) being used to filter the gas entering the cylinder (310); The crankcase (30) is provided with a collection chamber (350) on the side opposite to the drive mechanism (20), and at least one of the at least two cylinders (310) is in communication with the collection chamber (350).

6. The integrated oil-free air compressor according to claim 5, characterized in that, A fan (360) is provided on one side of the crankcase (30). The gas drawn in by the fan (360) flows to the collection chamber (350) and then flows from the collection chamber (350) to the corresponding cylinder (310) for compression.

7. The integrated oil-free air compressor according to claim 1, characterized in that, The two crankcases (30) are symmetrically arranged relative to the drive mechanism (20).

8. The integrated oil-free air compressor according to claim 7, characterized in that, The gas storage mechanism (10) has at least two connecting ports (120) on the top of each of its opposite sides along its length. The cylinder (310) corresponding to each crankcase (30) is connected to the connecting port (120) through the air intake pipe (320).

9. The integrated oil-free air compressor according to claim 1, characterized in that, Each crankcase (30) is provided with at least three cylinders (310); The reserved space at the bottom of each crankcase (30) is at least greater than the volume of one of the cylinders (310).

10. The integrated oil-free air compressor according to claim 1, characterized in that, The gas storage mechanism (10) includes a high-pressure gas storage chamber and a low-pressure gas storage chamber arranged at intervals, and the high-pressure gas storage chamber and the low-pressure gas storage chamber are not connected to each other.

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