Novel multifunctional air compressor

Abstract

The novel multifunctional air compressor comprises a motor shell, a piston driving mechanism shell and an air cavity supporting shell which are fixedly connected, an air cavity shell and an air cavity bottom plate are arranged above the air cavity supporting shell, a cylinder body is vertically installed, and a piston plate is arranged in the cylinder body. A motor output shaft in the motor shell extends into the piston driving mechanism shell and is in linkage with the piston plate through the piston driving mechanism. The air cavity bottom plate is provided with a one-way valve clack on the upper side of the air inlet to prevent air in the air cavity from flowing back; a vent hole and a one-way valve device are arranged on the piston plate in a penetrating mode, and one-way flow of air on the upper side and the lower side of the piston plate is achieved. By arranging a dual one-way airflow control structure, compressed air is effectively prevented from flowing back, the compression efficiency and the airtight reliability are improved, meanwhile, the heat dissipation performance and the intelligent control function are good, the structure is compact, and operation is stable.

Description

Technical Field

[0001] This utility model relates to the field of air compressor technology, and in particular to a novel multifunctional air compressor. Background Technology

[0002] Air compressors, as key equipment for converting mechanical energy into gas pressure energy, are widely used in industrial manufacturing, automotive repair, construction, and medical fields. In existing multi-functional air compressors, the casing is typically divided into a motor housing, a piston drive mechanism housing, an air chamber support housing, and an air chamber outer shell. A sealing partition is installed between the motor mounting cavity and the piston drive cavity to effectively prevent heat, oil mist, and electromagnetic interference generated by the motor from contaminating the compressed air, thus improving the overall operational stability and air cleanliness of the machine.

[0003] However, this structure still has the following shortcomings in actual operation: First, during the piston compression stroke, after the gas enters the gas chamber through the inlet hole on the bottom plate of the gas chamber, the high-pressure gas in the gas chamber is prone to backflow through the inlet hole during the piston return stroke, resulting in a decrease in compression efficiency. Second, during the reciprocating motion of the piston plate, the gas flow path on the upper and lower sides of the piston plate is relatively simple, making it difficult to achieve efficient multi-stage air intake and sealing, thus limiting the air intake volume and compression efficiency per unit stroke. Therefore, it is necessary to further optimize the unidirectional gas flow control mechanism based on the existing modular shell structure to improve compression efficiency and airtight reliability. Utility Model Content

[0004] This utility model proposes a novel multifunctional air compressor, which solves the above-mentioned problems existing in the use of the prior art.

[0005] The technical solution of this utility model is implemented as follows: A novel multi-functional air compressor includes a motor housing, a piston drive mechanism housing, and an air chamber support housing fixedly connected together. The piston drive mechanism housing is fixed to the rear side of the motor housing, and the air chamber support housing is fixed above the piston drive mechanism housing. An air chamber outer shell is provided above the air chamber support shell, and an air chamber is formed inside the air chamber outer shell. An air chamber bottom plate for sealing the air chamber is fixedly connected between the air chamber outer shell and the air chamber support shell. The cylinder is vertically installed inside the air chamber support shell, and its top abuts against the air chamber support shell. On the lower side of the cavity bottom plate, the cavity bottom plate has an air inlet hole that penetrates into the cavity at a corresponding position on the cylinder body. The cavity outer shell has an air outlet hole on the rear side of the cavity. A piston plate is movably fitted inside the cylinder body. A motor is installed inside the motor housing, and the output shaft of the motor extends into the piston drive mechanism housing. The piston drive mechanism housing is provided with a piston drive mechanism for linking the output shaft of the motor and the piston plate. A one-way valve is provided on the cavity bottom plate above the air inlet hole. A vent hole is provided through the piston plate. A one-way valve device is provided on the piston plate.

[0006] Preferably, the one-way valve device includes a secondary piston plate and an elastic diaphragm. The secondary piston plate is fixed on the upper side of the piston plate, and a one-way air inlet is provided on the secondary piston plate, which communicates with the vent hole. One end of the elastic diaphragm covers the upper side of the one-way air inlet, and the end of the elastic diaphragm away from the one-way air inlet is fixed on the secondary piston plate.

[0007] Preferably, there is an intake gap between the auxiliary piston plate and the piston plate.

[0008] Preferably, a first screw is provided at the center of the auxiliary piston plate, the first screw is threaded to the piston plate, a stop post is integrally formed on the lower end face of the auxiliary piston plate away from the one-way air inlet, a connecting hole is provided on the auxiliary piston plate through the stop post, a second screw is provided on the connecting hole and threaded to the piston plate, and the end of the elastic diaphragm away from the one-way air inlet is fixed to the auxiliary piston plate by the second screw.

[0009] Preferably, the air inlets are evenly distributed in a circle on the bottom plate of the air chamber, and the bottom plate of the air chamber has a central hole at the center of the circle where these air inlets are located. The one-way valve includes a connecting post for fixing to the central hole. The connecting post passes through the central hole and is integrally formed with an inverted step that abuts against the lower end face of the bottom plate of the air chamber.

[0010] Preferably, the one-way valve flap is umbrella-shaped and covers the upper side of each air inlet.

[0011] Preferably, a venting cover is connected to the front side of the motor housing, a plurality of venting holes are provided on the side of the motor housing, and a fan blade is fixedly connected to the output shaft of the motor, the fan blade being located on the rear side of the motor housing and facing the venting cover.

[0012] Preferably, a pressure sensor is installed on the front side of the air chamber housing, a second fan and a processor are installed on the upper side of the motor housing, the second fan faces the processor, a processor housing is fixedly installed on the upper side of the motor housing, the processor housing covers the pressure sensor, the second fan and the processor, a control switch is connected to the processor housing, and the processor is electrically connected to the pressure sensor, the second fan and the control switch.

[0013] Preferably, the air chamber shell is connected to an air compressor air-water separator at the air outlet position, and the air compressor air-water separator has an air pipe connector.

[0014] In summary, the beneficial effects of this utility model are as follows:

[0015] 1. A one-way valve is installed above the air inlet on the bottom plate of the air chamber, and a vent hole with a one-way valve is also provided on the piston plate, forming a dual one-way airflow control structure. When the piston moves upward to compress, gas enters the air chamber through the air inlet, opening the one-way valve. The one-way valve automatically closes when the piston moves downward to prevent high-pressure gas from flowing back into the air chamber. At the same time, the one-way valve on the piston plate allows gas to enter above the piston plate when the piston moves downward, effectively preventing reverse leakage of gas during compression. This achieves multi-path air intake and efficient compression, significantly improving compression efficiency and airtightness.

[0016] 2. The one-way valve device specifically covers and seals the one-way air inlet with an elastic diaphragm. It has a simple structure, sensitive response, and can automatically open and close during piston movement without the need for additional control components, thus reducing manufacturing costs and failure rate. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure when observed from another angle;

[0020] Figure 3 This is a schematic diagram of the structure of this utility model after the processor casing has been removed;

[0021] Figure 4 This is a schematic diagram of the structure of the present invention with the processor housing, second fan, and processor removed, and the air compressor air-water separator exploded open.

[0022] Figure 5 This is a schematic cross-sectional view of the present invention.

[0023] Figure 6 for Figure 5 A magnified view of a portion of point A in the middle;

[0024] Figure 7 This is a schematic diagram of the mating structure of the motor, eccentric connecting shaft, and piston connecting rod in this utility model;

[0025] Figure 8 This is a schematic diagram of the mating structure between the piston plate and the auxiliary piston plate in this utility model.

[0026] Figure 9 for Figure 8 Side view;

[0027] Figure 10 for Figure 8 A schematic diagram of the structure exploded.

[0028] In the diagram: 1. Motor housing; 11. Vent cover; 13. Vent hole; 14. Motor; 15. Fan blade; 16. Piston drive mechanism housing; 17. Air chamber support shell; 18. Air chamber outer shell; 19. Air chamber; 20. Air outlet; 21. Air chamber bottom plate; 22. Air inlet; 23. Center hole; 24. Cylinder block; 25. Piston plate; 26. Vent hole; 27. One-way valve disc; 28. Connecting column; 29. ​​Inverted step; 30. 31. Secondary piston plate; 32. One-way air inlet; 33. Support column; 34. Connecting hole; 35. Elastic diaphragm; 36. First screw; 37. Second screw; 38. Air inlet gap; 39. Pressure sensor; 40. Second fan; 41. Processor; 42. Processor housing; 43. Control switch; 44. Air compressor air-water separator; 45. Air pipe connector; 46. Eccentric connecting shaft; 47. Piston connecting rod; 48. Power cord. Detailed Implementation

[0029] The following will refer to the appendix in the embodiments of this utility model. Figure 1-10 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and 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.

[0030] Example:

[0031] like Figures 1 to 10 As shown, this utility model discloses a novel multi-functional air compressor, including a housing, a motor 14, a cylinder 24, a piston plate 25, and a piston drive mechanism. The housing adopts a modular structure design, specifically including a motor housing 1, a piston drive mechanism housing 16, and an air chamber support housing 17, all fixedly connected. The piston drive mechanism housing 16 is fixedly connected to the rear side of the motor housing 1. The air chamber support housing 17 is fixed above the piston drive mechanism housing 16, and an air chamber outer shell 18 is provided above the air chamber support housing 17, containing an air chamber 19. An air chamber bottom plate 21 is fixedly connected between the air chamber outer shell 18 and the air chamber support housing 17. The air chamber outer shell 18, the air chamber bottom plate 21, and the air chamber support housing 17 can be fixed by screws. The air chamber bottom plate 21 seals the air chamber 19 and serves as the air passage connection interface between the top of the cylinder 24 and the air chamber 19.

[0032] The cylinder 24 is vertically installed inside the air chamber support shell 17, with its top abutting against the lower side of the air chamber bottom plate 21. A piston plate 25 is vertically mounted inside the cylinder 24. The air chamber bottom plate 21 has an air inlet 22 at a corresponding position on the cylinder 24, penetrating into the air chamber 19. The air chamber outer shell 18 has an air outlet 20 on the rear side of the air chamber 19 for outputting compressed air. A motor 14 is installed inside the motor housing 1. The output shaft of the motor 14 extends rearward and enters the piston drive mechanism housing 16. The piston drive mechanism housing 16 has a piston drive mechanism for linking the output shaft of the motor 14 with the piston plate 25. This piston drive mechanism specifically includes an eccentric connecting shaft 45 and a piston connecting rod 46. The eccentric connecting shaft 45 is fixedly connected to the output shaft of the motor 14, and the piston connecting rod 46 is fixedly connected to the lower side of the piston plate 25. The piston connecting rod 46 and the eccentric connecting shaft 45 rotate together, thereby converting the rotational motion of the motor 14 into the reciprocating linear motion of the piston plate 25.

[0033] The core improvement of this embodiment lies in the addition of a dual one-way airflow control structure. Specifically, a one-way valve 27 is provided on the upper side of the air inlet 22 of the air chamber bottom plate 21. This one-way valve 27 is used to prevent the compressed gas in the air chamber 19 from flowing back to the cylinder 24 through the air inlet 22 during the piston return stroke. At the same time, a vent hole 26 is provided through the piston plate 25, and a one-way valve device is provided on the piston plate 25. This one-way valve device is used to allow gas to enter from the vent hole 26 above the piston plate 25 when the piston plate 25 moves downward, and to compress it when it moves upward, effectively preventing reverse gas leakage.

[0034] Furthermore, the one-way valve device includes a secondary piston plate 30 and an elastic diaphragm 34. The secondary piston plate 30 is fixedly mounted on the upper side of the piston plate 25, and a one-way air inlet 31 communicating with the vent hole 26 on the piston plate 25 is provided on the secondary piston plate 30. One end of the elastic diaphragm 34 covers the upper side of the one-way air inlet 31, and the other end of the elastic diaphragm 34 away from the one-way air inlet 31 is fixedly connected to the secondary piston plate 30. There is an air inlet gap 37 between the secondary piston plate 30 and the piston plate 25, which constitutes an auxiliary channel for gas to enter above the secondary piston plate 30, further increasing the air intake.

[0035] In the fixing structure between the auxiliary piston plate 30 and the piston plate 25, a first screw 35 is provided at the center of the auxiliary piston plate 30. The first screw 35 is threaded onto the piston plate 25 to achieve preliminary positioning of the center of the auxiliary piston plate 30. A stop post 32 is integrally formed on the lower end face of the auxiliary piston plate 30 away from the one-way air inlet 31. The stop post 32 is used to maintain the stability of the air inlet gap 37 between the auxiliary piston plate 30 and the piston plate 25. A connecting hole 33 is provided on the auxiliary piston plate 30, which passes through the stop post 32. A second screw 36 is provided in the connecting hole 33 and threaded onto the piston plate 25. The end of the elastic diaphragm 34 away from the one-way air inlet 31 is pressed and fixed to the auxiliary piston plate 30 by the second screw 36, forming a diaphragm structure that is fixed at one end and can be freely opened and closed at the other end. At the same time, a slot can be provided on the bottom plate 21 of the air chamber to avoid the head of the second screw 36.

[0036] The one-way valve disc 27 on the air chamber base plate 21 has the following specific structure: several air inlets 22 are evenly distributed around the circumference of the air chamber base plate 21, and a central hole 23 is provided at the center of the circumference of these air inlets 22. The one-way valve disc 27 adopts an umbrella-shaped structure, including a connecting post 28 for fixing and connecting to the central hole 23. The connecting post 28 passes through the central hole 23 and is integrally formed with an inverted step 29 that abuts against the lower end face of the air chamber base plate 21, thereby reliably fixing the one-way valve disc 27 to the air chamber base plate 21. One-way valve disc 27 is umbrella-shaped and covers the upper side of each air inlet 22. When the piston plate 25 is compressed upward, the gas pushes the periphery of the umbrella-shaped valve disc upward, causing the valve disc to tilt up, and the gas enters the air chamber 19 through the air inlet 22. When the piston plate 25 moves downward, the umbrella-shaped valve disc relies on its own elasticity and the gas pressure in the air chamber 19 to tightly adhere to the upper surface of the bottom plate 21 of the air chamber, forming a reliable seal on the air inlet 22 and preventing the high-pressure gas in the air chamber 19 from flowing back.

[0037] In terms of heat dissipation structure, a venting cover 11 is connected to the front side of the motor housing 1, and several venting holes 13 are opened on the side of the motor housing 1. A fan blade 15 is fixedly connected to the output shaft of the motor 14. The fan blade 15 is located on the rear side of the motor housing 1 and faces the venting cover 11. When the motor 14 is running, the fan blade 15 rotates with the output shaft to generate forced airflow. The airflow enters the motor housing 1 through the venting holes 13 and is then discharged outward through the venting cover 11, realizing active air cooling for the motor 14. Since the fan blade 15 is located on the rear side of the motor 14, the airflow it generates will not enter the piston drive mechanism housing 16, avoiding disturbance to the lubrication system.

[0038] In terms of intelligent control, a pressure sensor 38 is installed on the front side of the air chamber 19 in the air chamber housing 18 for real-time monitoring of the gas pressure inside the air chamber 19. A second fan 39 and a processor 40 are installed on the upper side of the motor housing 1, with the second fan 39 facing the processor 40 for independent heat dissipation, preventing the processor 40 from overheating due to prolonged operation, which could lead to performance degradation or shortened lifespan. A processor housing 41 is fixedly installed on the upper side of the motor housing 1, covering the pressure sensor 38, the second fan 39, and the processor 40, serving both protective and aesthetic purposes. A control switch 42 is connected to the processor housing 41, and the processor 40 is electrically connected to the pressure sensor 38, the second fan 39, and the control switch 42. Based on the pressure signal detected by the pressure sensor 38, the processor 40 can automatically adjust the operating state of the motor 14, achieving closed-loop control of the pressure inside the air chamber 19. Users can also manually adjust or start / stop the motor using the control switch 42. The processor 40, control switch 42 and pressure sensor 38 mentioned above are all existing technologies, and the functions they are to achieve are supported by a large number of mature technologies. The essence of this utility model is to optimize and combine existing hardware and its connection methods for specific application scenarios in order to adapt to the monitoring and adjustment of the pressure of the air chamber 19, without involving the improvement of the internal software of the hardware.

[0039] At the output end, an air compressor air-water separator 43 is connected to the air outlet 20 of the air chamber housing 18. This air compressor air-water separator 43 is used to remove moisture from the compressed air and improve the quality of the output gas. The air compressor air-water separator 43 has an air pipe connector 44 for easy and quick connection to external pneumatic tools or pipelines.

[0040] In this embodiment, during operation, the motor 14 starts and drives the output shaft to rotate, which in turn drives the piston plate 25 to reciprocate linearly within the cylinder 24 via the eccentric connecting shaft 45 and the piston connecting rod 46. When the piston plate 25 moves downward, a negative pressure is created within the cylinder 24. External air enters the piston drive mechanism housing 16 through the opening or air intake gap on the air chamber support shell 17 or the piston drive mechanism housing 16, and then enters the interior of the cylinder 24 through the lower end of the cylinder 24. During this process, the one-way valve device on the piston plate 25 is in the open state: gas enters the air intake gap 37 between the auxiliary piston plate 30 and the piston plate 25 through the vent hole 26 on the piston plate 25, and then pushes the elastic diaphragm 34 upward through the one-way air intake hole 31 on the auxiliary piston plate 30, entering above the auxiliary piston plate 30, thus achieving multi-path air intake. When the piston plate 25 moves upward, the gas within the cylinder 24 is compressed, and the pressure increases. At this time, the elastic diaphragm 34, under the action of gas pressure, tightly adheres to the upper surface of the auxiliary piston plate 30, sealing the one-way air inlet 31 and preventing gas leakage from the one-way air inlet 31. Simultaneously, compressed gas rises through the air inlet 22 on the bottom plate 21 of the air chamber, opening the umbrella-shaped one-way valve 27 and entering the air chamber 19. It then passes through the air compressor's air-water separator 43 and is output from the air pipe connector 44. When the piston plate 25 moves downwards again, the umbrella-shaped one-way valve 27 automatically closes, preventing the high-pressure gas in the air chamber 19 from flowing back into the cylinder 24. This cycle repeats, achieving continuous and efficient compressed air output.

[0041] In summary, this embodiment optimizes the unidirectional gas flow path, effectively prevents gas backflow, improves compression efficiency and airtight reliability, and integrates heat dissipation, intelligent control and gas-water separation functions. It is suitable for small and medium-sized air compressor applications with high requirements for air quality, operational stability and intelligence.

[0042] It should also be noted that the terms used in this utility model, such as "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing 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 limiting the scope of protection of this utility model.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel multi-functional air compressor, characterized in that: The device includes a motor housing, a piston drive mechanism housing, and a gas chamber support housing, all fixedly connected. The piston drive mechanism housing is fixed to the rear of the motor housing. The gas chamber support housing is fixed above the piston drive mechanism housing. A gas chamber outer shell is located above the gas chamber support shell, and the outer shell contains a gas chamber. A gas chamber base plate is fixedly connected between the outer shell and the support shell to seal the gas chamber. A cylinder is vertically mounted inside the support shell, with its top abutting against the underside of the gas chamber base plate. The gas chamber base plate has an air inlet hole at a corresponding position on the cylinder, penetrating into the gas chamber. The outer shell has an air outlet hole at the rear of the gas chamber. A piston plate is vertically movable within the cylinder. A motor is installed inside the motor housing, and the motor's output shaft extends into the piston drive mechanism housing. The piston drive mechanism housing contains a piston drive mechanism for linking the motor's output shaft with the piston plate. A one-way valve is located above the air inlet hole on the gas chamber base plate. A vent hole is formed through the piston plate, and a one-way valve device is provided on the piston plate.

2. A novel multi-functional air compressor according to claim 1, characterized in that: The one-way valve device includes a secondary piston plate and an elastic diaphragm. The secondary piston plate is fixed on the upper side of the piston plate. The secondary piston plate has a one-way air inlet that communicates with the vent hole. One end of the elastic diaphragm covers the upper side of the one-way air inlet, and the end of the elastic diaphragm away from the one-way air inlet is fixed on the secondary piston plate.

3. A novel multi-functional air compressor according to claim 2, characterized in that: There is an intake gap between the auxiliary piston plate and the piston plate.

4. A novel multi-functional air compressor according to claim 3, characterized in that: The auxiliary piston plate is provided with a first screw at its center, which is threaded onto the piston plate. A stop post is integrally formed on the lower end face of the auxiliary piston plate away from the one-way air inlet. A connecting hole is provided on the auxiliary piston plate through the stop post, and a second screw is provided on the connecting hole and threaded onto the piston plate. The end of the elastic diaphragm away from the one-way air inlet is fixed to the auxiliary piston plate by the second screw.

5. A novel multi-functional air compressor according to claim 1, characterized in that: The air inlet is evenly distributed in a circle on the bottom plate of the air chamber. The bottom plate of the air chamber has a central hole at the center of the circle where the air inlet is located. The one-way valve includes a connecting post for fixing to the central hole. The connecting post passes through the central hole and is integrally formed with an inverted step that abuts against the lower end face of the bottom plate of the air chamber.

6. A novel multi-functional air compressor according to claim 5, characterized in that: The one-way valve flap is umbrella-shaped and covers the upper side of each air inlet.

7. A novel multi-functional air compressor according to claim 1, characterized in that: A venting cover is connected to the front side of the motor housing, and several venting holes are opened on the side of the motor housing. A fan blade is fixedly connected to the output shaft of the motor, and the fan blade is located on the rear side of the motor housing and is oriented towards the venting cover.

8. A novel multi-functional air compressor according to claim 1, characterized in that: A pressure sensor is installed on the front side of the air chamber shell. A second fan and a processor are installed on the upper side of the motor housing. The second fan faces the processor. A processor housing is fixedly installed on the upper side of the motor housing. The processor housing covers the pressure sensor, the second fan, and the processor. A control switch is connected to the processor housing. The processor is electrically connected to the pressure sensor, the second fan, and the control switch.

9. A novel multi-functional air compressor according to claim 1, characterized in that: The air chamber shell is connected to an air compressor air-water separator at the air outlet position, and the air compressor air-water separator has an air pipe connector.

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