CN218266212U - Small-size two jar oil-free air compressor - Google Patents

Abstract

The utility model provides a small-size two jar oil-free air compressor, includes mutually supporting: the engine comprises a motor shell, a crankcase, a side cylinder cover, an air inlet pipeline, a cooling fan and a cylinder assembly; the air inlet pipeline is designed on the upper half part of the motor shell and is a special-shaped pipeline, a bottom angle is further arranged on the motor shell, and a shock pad is connected to the bottom angle; the volume is reduced after the performance and the displacement are ensured, the compatibility is realized, the device is suitable for various special conditions, and the cost is lower.

Description

Small-size two-cylinder oil-free air compressor

The technical field is as follows:

the utility model relates to an oil-free air compressor specifically relates to an oil-free air compressor of two small-size jars.

Background art:

at present, two-cylinder oilless air compressors in the market have the following defects:

1. most of oil-free air compressors on the market are very large in length, width and height; when the placement space of a low-displacement small vehicle or an air compressor on the vehicle is small, the requirements cannot be met;

2. in the existing oilless air compressor, the crankcase and the motor shell are connected secondarily, namely the motor shell is connected with a motor end cover which is then connected with the crankcase, so that the requirement on assembly accuracy is high, the conditions of vibration damage and the like need to be considered, the cost is increased, the service life is greatly influenced, and the unnecessary machine volume is increased;

3. the air inlet of most oil-free air compressors in the existing market is connected through an external air pipe; the external connection of the pipeline is not beautiful, the cost is greatly increased, and the space area (length, width and height) for placing the machine is increased;

4. most of the existing oil-free air compressors adopt fans for heat dissipation, and most of the fans are arranged at side cylinder covers or bottom plates to indirectly dissipate heat of parts (cylinders) generating high temperature, so that the heat dissipation effect is not ideal, and the heat dissipation efficiency is not high;

5. most of shock absorption structures of existing oil-free air compressors are provided with shock absorption pads, the shock absorption pads are mounted in a mode that an upper base plate is mounted on a motor and then connected with the shock absorption pads, so that the shock absorption effect is unsatisfactory, resonance relations exist among the motor, the upper base plate and the shock absorption pads, vibration and noise are improved, and the cost is increased;

6. most of the existing motor shells of oil-free air compressors adopt a die-casting forming process, so that air holes are easily generated, the failure rate is high, and the die-casting cost is high;

7. the existing air compressor cylinder has poor wear resistance and high temperature resistance, so that the cylinder and the piston are easy to wear during movement, and the service life is short and frequent replacement is required.

The utility model has the following contents:

to the above-mentioned problem of prior art, the utility model aims to provide a small-size two jars oil-free air compressor, this small-size air compressor reduce the volume after the condition of assurance performance, discharge capacity, not only have compatibly, are applicable to various special circumstances, and the cost is also lower.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a small-size two jar oil-free air compressor, includes mutually supporting: the engine comprises a motor shell, a crankcase, a side cylinder cover, an air inlet pipeline, a cooling fan and an air cylinder assembly; the crankcase and the motor shell are integrally and fixedly connected, the motor shell is formed in one step by adopting an extrusion and stretching process, the air inlet pipeline is integrally formed on the motor shell, the cooling fan is arranged at the top of the motor shell, and the air cylinder assembly comprises left and right air cylinders arranged on two sides of the motor shell.

Furthermore, the air inlet pipeline is designed on the upper half part of the motor shell and is a special-shaped pipeline.

Further, the top of the motor shell is provided with a heat dissipation rib.

Furthermore, the left and right air cylinders are integrally formed by adopting a micro-arc oxidation process, and a ceramic layer is plated on the surface of the inner cavity of each air cylinder.

Further, still be equipped with the base angle on the motor casing, the connection is equipped with the shock pad on the base angle.

Furthermore, the cooling fans can be arranged on two sides of the motor shell, are connected with the motor shaft and are driven by the motor shaft to rotate, and the cooling fan outer covers are arranged on the side cylinder covers.

Adopt above-mentioned technical scheme, the utility model discloses relative prior art has following advantage:

the small air compressor has the advantages that the volume is reduced after the performance and the displacement are ensured, the small air compressor is compatible, is suitable for various special conditions, and is lower in cost;

after the motor shell adopts a stretching process, bubbles generated by injection molding of a mold can be reduced, the rejection rate is reduced, and the motor shell is more attractive;

the air inlet pipeline is integrally formed on the motor shell of the air compressor and is integrally formed with the motor shell, and the air compressor has the advantages that the air inlet part of the whole air compressor is simple and compact, the motor shell can be cooled, the appearance is attractive, and the material cost is reduced;

the motor casing air inlet pipeline is a special-shaped pipeline, the casing is designed by fully utilizing the wall thickness of the motor casing, the design of a bottom angle of the motor is not influenced, the appearance is more attractive, and the material cost is reduced;

the micro-arc oxidation process is adopted in the inner cavity of the cylinder, so that the wear resistance and the high temperature resistance of the cylinder can be improved, the service life is prolonged, the maintenance cost is reduced, and the noise can be optimized;

the motor shell is provided with a bottom angle, so that the height can be reduced, and the motor shell can be directly connected with a damping pad, so that the secondary assembly error is reduced; the vibration is optimized, and the cost is reduced.

Description of the drawings:

the following detailed description of the present invention is provided with the accompanying drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a motor casing and a crankcase according to the present invention;

FIG. 3 is a schematic view of the air intake pipeline of the present invention;

FIG. 4 is a schematic cross-sectional view of the present invention;

fig. 5 is a schematic structural view of an embodiment of the present invention with a fan.

The specific implementation mode is as follows:

the following detailed description of the present invention is made with reference to the accompanying drawings and examples:

fig. 1-4 show, do the utility model discloses an embodiment one, a small-size two jars oil-free air compressor, including mutually supporting: the engine comprises a motor shell 1, a crankcase 2, a side cylinder cover 3, an air inlet pipeline 4, a cooling fan 5 and a cylinder assembly 6; the crankcase 2 is fixedly connected with the motor casing 1 in an integrated mode, the motor casing is formed in one step through an extrusion and stretching process, an air inlet pipeline 4 is formed in the motor casing 1 in an integrated mode, the heat dissipation fan 5 is arranged on the top of the motor casing 1, and the air cylinder assembly comprises a left air cylinder 6 and a right air cylinder 6 which are arranged on two sides of the motor casing.

Further, the air inlet pipeline 4 is designed on the upper half part of the motor casing 1 and is a special-shaped pipeline. The top of the motor casing 1 is provided with a heat dissipation rib 7. The left and right cylinders 6 are integrally formed by adopting a micro-arc oxidation process, and a ceramic layer is plated on the surface of the inner cavity of each cylinder.

Further, a base angle 8 is further arranged on the motor casing 1, and a shock pad 9 is connected to the base angle.

The utility model discloses a reduce the space area of machine, follow following several modes and go on:

firstly, a motor end cover is cancelled, and a crankcase is designed to be directly locked on a motor shell; the length of the motor shell is reduced as much as possible, and the shortest length of the motor shell is designed through the known stator coil of the motor; the length of the crankcase is reduced as much as possible; firstly, the design size chain of the known parts (such as an eccentric wheel and a cylinder port) is shortest, and the oil seal of the motor can be removed, so that the realization is realized; the bottom angle position of the motor is designed through the lowest point of the air compressor, namely the lowest point of the motor shell or the crankcase.

As shown in fig. 2, the motor casing 1 is directly connected with the crankcase 2, fixed by screws, and the motor end cover is integrated on the crankcase 2, thereby shortening the length and reducing the secondary assembly, wherein the length of the motor casing 1 is the shortest according to the design of a coil; the motor casing 1 adopts a stretching process, the motor casing and the air inlet pipeline 4 can be integrally formed, and air hole and processing procedures are reduced, so that the cost is reduced; and the aesthetic property is better.

Air inlet pipeline 4 designs in motor casing 1 first half, and be the special-shaped pipeline, can avoid the various factors (for example increase thickness, increase width etc.) that motor base angle 8 brought at motor casing 1 first half, it is more simple and convenient also to make motor base angle 8 position design time, air inlet pipeline 4 also can shorten motor casing 1's thickness, width for the special-shaped pipeline, and make full use of the wall thickness of motor casing 1, make the required wall thickness material of pipeline with the minimum cost, and more pleasing to the eye.

As shown in fig. 3, the machine gas intake method is: external air enters a crankcase on one side through an air inlet joint 10, one part of air directly flows into an air cylinder on the crankcase to work, and the other part of air flows into a crankcase on the other side through an air inlet pipeline 4 of a motor shell and flows into an air cylinder on the other side to work; thereby can play the radiating effect to the motor casing.

As shown in fig. 4, the air compressor works on the principle that the power supply drives the motor shaft 11 to rotate, the eccentric wheel 12 is matched with the motor shaft 11 through the eccentric wheel 12, so that the eccentric wheel 12 rotates, and the piston connecting rod assembly 13 is arranged on the eccentric wheel 12, so that one side of the piston connecting rod assembly 13 rotates and the other side reciprocates up and down in the air cylinder 6.

One end of the crank case 2 is connected with the motor shell 1, and the other end is connected with the air cylinder 6, so that the position of the air cylinder 6 depends on a size chain of the eccentric wheel 12, the motor shaft 11 and the like; the position of the cylinder 6 is designed to be the shortest under the condition that the eccentric wheel 12 is ensured not to interfere with the end surface of the crankcase 2. The eccentric wheel 12 and the motor shaft 11 are matched in a clearance fit mode and a bolt fastening mode, the mode is easy to disassemble, assemble and replace, and the maintenance cost is reduced. The eccentric wheel 12 and the connecting rod are also locked by bolts.

Two cylinders 6 in the air compressor are designed on the left side and the right side of a motor shell 1, when one cylinder vibrates upwards, the other cylinder can be balanced, so that the vibration of a machine is reduced, a heat dissipation fan 5 is arranged at the top of the motor, the cylinders 4 on the two sides can dissipate heat, ribs are also arranged at the top of the motor shell, and the heat dissipation can be dissipated, so that the heat dissipation effect of the heat dissipation fan 5 is fully utilized, and the heat dissipation efficiency is maximized; the temperature of the motor and the cylinder is reduced. (as in FIG. 1)

The cylinder 6 adopts micro-arc oxidation process, and a ceramic layer 14 is plated on the surface of the inner cavity of the cylinder, so that the wear resistance is improved, the high temperature resistance is improved, the fault is reduced, and the maintenance cost is reduced (as shown in figure 4)

As shown in fig. 3, a base angle 8 is further arranged on the motor casing 1 and is used for being connected with a shock pad 9, so that secondary assembly is avoided, increase of vibration caused by resonance possibly caused by secondary assembly is reduced, and after the base angle 8 of the motor is directly connected with the shock pad 9 through testing, the shock absorption effect is better, and the vibration is lower; (as in FIG. 1)

The position of the bottom angle 8 of the motor depends on the position of the lowest point of the crankcase 2 or the lowest point of the motor shell 1, so as to be in reference with a lower bottom plate 14 installed on the shock pad 9; the shortest distance is achieved under the condition that the lowest point of a crankcase or the lowest point of a motor shell does not touch the surface of the lower bottom plate 14 when the machine moves; (as in FIG. 1)

As fig. 5 is the second embodiment of the present invention, the fan 15 is disposed on two sides of the motor casing 1, and is connected to the motor shaft 11 to be rotated by the motor shaft, and the side cylinder cover is disposed outside the fan 15.

The air compressor with the structure is provided with the fan, namely, a power line of the 24V fan 5 does not need to be externally connected, and the motor shaft 11 and the fan 15 synchronously rotate; the replacement is convenient, and can be realized only by replacing the side cylinder cover; the versatility of the machine is improved.

Compared with the prior art, the utility model has the advantages that:

unnecessary accessories such as a motor end cover, an upper bottom plate and the like are omitted; and the space is also reduced as much as possible on necessary spare parts, thereby achieving the minimum air compressor; a motor end cover is omitted, so that the crankcase is directly connected with the motor shell, secondary assembly errors are reduced, the strength is improved, and the vibration and noise of the whole machine are optimized; and the width of the machine can be reduced, and the cost is reduced.

An air inlet pipeline of the air compressor is optimized, and an air inlet pipe is integrated on the motor shell, so that an external connecting pipeline is simplified, the space area of a machine is reduced, and the cost is reduced; meanwhile, the entered gas can dissipate heat of the motor, so that the attractiveness is improved; improve oil-free air compressor's heat radiation structure, adorn the fan in the motor casing top to the realization is direct dispels the heat to the spare part (cylinder) that produces the high temperature, makes its radiating effect reach the biggest.

The motor base angle is formed on the motor shell, so that the shock pad is directly arranged on the motor base angle, secondary connection is omitted, vibration and noise are reduced, and cost is reduced.

The motor casing can be formed by adopting an extrusion and stretching process, the stretching structure has high strength, air holes are not easy to generate, the surface is smooth and attractive, the manufacturing is easy, and the cost is low.

The eccentric wheel is matched with the motor shaft in a clearance fit mode, and the eccentric wheel and the motor shaft are connected in a bolt fastening mode, so that the structure is easy to disassemble, assemble and replace, and the maintenance cost is reduced;

aiming at the problem of abrasion of the cylinder during piston movement, the inner wall of the cylinder is subjected to process design, namely, a micro-arc oxidation process is adopted, and a ceramic layer is plated on the surface of the cylinder body, so that the wear resistance and the high temperature resistance of the cylinder are improved, the faults are reduced, and the maintenance cost is reduced.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims (6)

1. The utility model provides a small-size two jar oil-free air compressor which characterized in that: comprises the following components in mutual matching: the engine comprises a motor shell, a crankcase, a side cylinder cover, an air inlet pipeline, a cooling fan and an air cylinder assembly; the crankcase and the motor shell are integrally and fixedly connected, the motor shell is formed in one step by adopting an extrusion and stretching process, the air inlet pipeline is integrally formed on the motor shell, the cooling fan is arranged at the top of the motor shell, and the air cylinder assembly comprises left and right air cylinders arranged on two sides of the motor shell.

2. An oil-free air compressor of two small cylinders as claimed in claim 1, wherein: the air inlet pipeline is designed on the upper half part of the motor shell and is a special-shaped pipeline.

3. A small-sized two-cylinder oil-free air compressor as claimed in claim 1 or 2, wherein: the top of the motor shell is provided with a heat dissipation rib.

4. An oil-free air compressor of a small size with two cylinders as claimed in claim 1 or 2, wherein: the left and right air cylinders are integrally formed by adopting a micro-arc oxidation process, and a ceramic layer is plated on the surface of an inner cavity of each air cylinder.

5. An oil-free air compressor of a small size with two cylinders as claimed in claim 1 or 2, wherein: the motor casing is also provided with a base angle, and the base angle is connected with a damping pad.

6. An oil-free air compressor of a small size with two cylinders as claimed in claim 1, wherein: the heat radiation fans can be arranged on two sides of the motor shell, are connected with the motor shaft and are driven by the motor shaft to rotate, and the outer covers of the heat radiation fans are arranged on the side cylinder covers.

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