Air path structure of air compressor

Abstract

The utility model relates to a gas circuit structure of an air compressor, which comprises a first compressor, a second compressor, a driving motor connected between the first compressor and the second compressor, and a filter arranged at a gas input end, the electromagnetic valve assembly comprises a first electromagnetic valve and a second electromagnetic valve which are arranged on one side of the filter; in a series connection mode, the first electromagnetic valve controls the first airflow passage to be conducted, the second airflow passage is closed, and external air enters the first compressor at the moment; in the parallel connection mode, the first electromagnetic valve controls the first air flow channel and the second air flow channel to be communicated, and air enters the first compressor and the second compressor. Series-parallel connection dynamic switching can be achieved, the series connection mode improves the pressure output capacity, the parallel connection mode meets the requirement for large flow, and the production cost is reduced while different pressure and flow requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of air compression technology, specifically to an air circuit structure for an air compressor. Background Technology

[0002] Within automotive systems, air compressors play a crucial role, being widely used in air suspension systems, tire inflation, and other auxiliary functions such as seat massage.

[0003] However, in current air compressor applications, the requirements for gas pressure and flow rate vary significantly across different scenarios. Traditional air compressors typically have fixed gas path structures, capable of outputting only a single pressure and flow rate, making it difficult to simultaneously meet the diverse pressure and flow requirements of various applications. For example, automotive air suspensions require a higher pressure gas supply, while oxygen concentrators and tire inflators prioritize flow rate. Designing and manufacturing separate air compressors for different devices would lead to increased costs and poor versatility.

[0004] Therefore, it is necessary to provide a new air circuit structure for air compressors. Utility Model Content

[0005] Based on the technical problems existing in the prior art, this utility model provides an air compressor air circuit structure that opens and closes different air circuits through a solenoid valve assembly to achieve dynamic switching between series and parallel operation. The series mode improves the pressure output capacity, while the parallel mode meets the large flow rate requirements. This satisfies different pressure and flow rate requirements while reducing production costs.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: An air circuit structure for an air compressor is provided, including a first compressor, a second compressor, a drive motor connected between the first compressor and the second compressor, and a filter disposed at the gas input end. The intermediate air circuit includes multiple airflow passages. The solenoid valve assembly includes a first solenoid valve and a second solenoid valve disposed on one side of the filter. In series mode, the first solenoid valve controls the first airflow passage to be open and the second airflow passage to be closed, at which time external gas can only enter the interior of the first compressor through the filter. In parallel mode, the first solenoid valve controls the first airflow passage and the second airflow passage to be open simultaneously, at which time external gas enters the interior of the first compressor and the second compressor respectively.

[0007] Furthermore, one end of the first airflow passage is connected to the filter, and the other end of the second airflow passage is connected to the inlet of the first compressor; one end of the second airflow passage is connected to the filter, and the other end of the second airflow passage is connected to the inlet of the second compressor.

[0008] Furthermore, the solenoid valve assembly also includes a third solenoid valve, one end of the third airflow passage is connected to the outlet of the first compressor, the other end of the third airflow passage is connected to the inlet of the second compressor, one end of the fourth airflow passage is connected to the outlet of the first compressor, and the other end of the fourth airflow passage is connected to the third solenoid valve.

[0009] Furthermore, in series mode, the second solenoid valve controls the third airflow passage to open and the fourth airflow passage to close. At this time, the gas output from the first compressor enters the second compressor through the third airflow passage for further compression. In parallel mode, the second solenoid valve controls the fourth airflow passage to open and the third airflow passage to close. At this time, the gas output from the first compressor flows directly to the third solenoid valve.

[0010] Furthermore, one end of the fifth airflow channel is connected to the outlet of the second compressor, and the other end of the fifth airflow channel is connected to the third solenoid valve, so that the gas compressed by the second compressor flows directly to the third solenoid valve.

[0011] Furthermore, the air compressor's air path structure also includes a dryer and an overflow valve.

[0012] Furthermore, one end of the sixth airflow channel is connected to the third solenoid valve, and the other end of the sixth airflow channel is connected to the dryer; one end of the seventh airflow channel is connected to the third solenoid valve, and the other end of the seventh airflow channel is connected to the overflow valve.

[0013] Furthermore, in series mode, the third solenoid valve controls the sixth airflow channel to open and the seventh airflow channel to close, at which time the airflow flowing to the third solenoid valve flows to the dryer; in parallel mode, the third solenoid valve controls the seventh airflow channel to open and the sixth airflow channel to close, at which time the airflow flowing to the third solenoid valve flows to the overflow valve.

[0014] Furthermore, the first compressor and the second compressor are two-stage piston compressors, in which the first compressor and the second compressor use two-stage pistons to compress the gas in the cylinders at both ends and output it through a one-way valve.

[0015] Furthermore, one end of the drive motor shaft is connected to the first compressor, and the other end of the drive motor is connected to the second compressor.

[0016] The beneficial effects of this utility model are as follows: The air compressor air circuit structure provided by this utility model includes a first compressor, a second compressor, a drive motor connected between the first and second compressors, a filter set at the gas input end, a dryer and an overflow valve set at the gas output end, an intermediate air circuit, and a solenoid valve assembly set on the intermediate air circuit. A single drive motor drives the first and second compressors to rotate, with both ends of the drive motor connected to the first and second compressors respectively. Compared to using two independent drive motors to drive the two compressors separately, this reduces the number of motors used, thereby lowering production costs. By setting a series-parallel air circuit structure, in series mode, the gas undergoes two stages of compression, meeting high-pressure requirements; the series mode is suitable for supplying high-pressure gas. In parallel mode, the two compressors compress and supply gas simultaneously, meeting high-flow requirements. The flexible air circuit control method can adapt to various application scenarios with different pressure and flow requirements. By setting a solenoid valve assembly, including a first solenoid valve, a second solenoid valve, and a third solenoid valve, the opening and closing of each airflow path can be easily controlled, thereby realizing rapid switching of the air compressor air circuit structure between series and parallel modes to adapt to different working needs. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the air circuit structure of an air compressor in series mode provided by this utility model;

[0019] Figure 2 This is a schematic diagram of the air circuit structure of an air compressor in parallel mode provided by this utility model.

[0020] The component names and their numbers in the diagram are as follows:

[0021] Air compressor air path structure 100;

[0022] First compressor 1; second compressor 2; drive motor 3; filter 4; dryer 5; overflow valve 6; intermediate air passage 7, first airflow passage 71, second airflow passage 72, third airflow passage 73, fourth airflow passage 74, fifth airflow passage 75, sixth airflow passage 76, seventh airflow passage 77; solenoid valve assembly 8, first solenoid valve 81, second solenoid valve 82, third solenoid valve 83. Detailed Implementation

[0023] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, illustrating only the basic aspects of the present utility model, and therefore only shows the components relevant to the present utility model. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] like Figure 1 As shown, this embodiment provides an air circuit structure 100 for an air compressor, including: a first compressor 1, a second compressor 2, a drive motor 3 connected between the first compressor 1 and the second compressor 2, a filter 4 disposed at the gas input end, a dryer 5 and an overflow valve 6 disposed at the gas output end, an intermediate air circuit 7, and a solenoid valve assembly 8 disposed on the intermediate air circuit 7.

[0025] In some implementations, the first compressor 1 and the second compressor 2 are two-stage piston compressors. The first compressor 1 and the second compressor 2 use two-stage pistons to compress the gas in the cylinders at both ends and output it through one-way valves. The two ends of the drive motor 3 are respectively connected to loads. That is, one end of the drive motor 3 shaft is connected to the first compressor 1 to provide driving force to the first compressor 1; the other end of the drive motor 3 is connected to the second compressor 2 to provide driving force to the second compressor 2. This realizes that one drive motor drives two compressors to rotate, reducing production costs.

[0026] In other embodiments, the first compressor 1 and the second compressor 2 may be selected as two positive displacement compressors or a combination of a positive displacement compressor and a reciprocating compressor, as needed.

[0027] In some embodiments, the intermediate air path 7 includes multiple airflow passages. The solenoid valve assembly 8 includes a first solenoid valve 81 disposed on one side of the filter 4, a second solenoid valve 82 disposed between the first compressor 1 and the second compressor 2, and a third solenoid valve 83 disposed on one side of the dryer 5.

[0028] In some embodiments, a filter 4 is disposed at the inlet of the gas input end, and the filter 4 is used to filter impurities in the gas. One end of the first airflow passage 71 is connected to the filter 4, and the other end of the second airflow passage 8 is connected to the inlet of the first compressor 1; one end of the second airflow passage 8 is connected to the filter 4, and the other end of the second airflow passage 8 is connected to the inlet of the second compressor 2. A first solenoid valve 81 is disposed on the first airflow passage 71 and the second airflow passage 72. The first solenoid valve 81 is used to control the opening and closing of the second airflow passage 72. When the air compressor airflow structure 100 is in series mode, the first solenoid valve 81 controls the first airflow passage 71 to be open and the second airflow passage 72 to be closed. At this time, external gas can only enter the interior of the first compressor 1 through the filter 4. When the air compressor airflow structure 100 is in parallel mode, the first solenoid valve 81 controls the first airflow passage 71 and the second airflow passage 72 to be open simultaneously. At this time, external gas enters the interior of the first compressor 1 and the second compressor 2 respectively.

[0029] In some embodiments, one end of the third airflow passage 73 is connected to the outlet of the first compressor 1, and the other end of the third airflow passage 73 is connected to the inlet of the second compressor 1. One end of the fourth airflow passage 74 is connected to the outlet of the first compressor 1, and the other end of the fourth airflow passage 74 is connected to the third solenoid valve 83. The second solenoid valve 82 is disposed on the third airflow passage 73 and the fourth airflow passage 74. When the air compressor airflow path structure 100 is in series mode, the second solenoid valve 82 controls the third airflow passage 73 to open and the fourth airflow passage 74 to close. At this time, the gas output from the first compressor 1 enters the second compressor 2 through the third airflow passage 73 for further compression. When the air compressor airflow path structure 100 is in parallel mode, the second solenoid valve 82 controls the fourth airflow passage 74 to open and the third airflow passage 73 to close. At this time, the gas output from the first compressor 1 flows directly to the third solenoid valve 83.

[0030] In some embodiments, one end of the fifth airflow passage 75 is connected to the outlet of the second compressor 2, and the other end of the fifth airflow passage 75 is connected to the third solenoid valve 83. Therefore, the gas compressed by the second compressor 2 flows directly to the third solenoid valve 83.

[0031] In some embodiments, one end of the sixth airflow passage 76 is connected to the third solenoid valve 83, and the other end is connected to the dryer 5; one end of the seventh airflow passage 77 is connected to the third solenoid valve 83, and the other end is connected to the overflow valve 6. The third solenoid valve 83 is used to control the sixth airflow passage 76 and the seventh airflow passage 77. When the air compressor air circuit structure 100 is in series mode, the third solenoid valve 83 controls the sixth airflow passage 76 to open and the seventh airflow passage 77 to close. At this time, the airflow flowing to the third solenoid valve 83 flows to the dryer 5 for drying the gas. When the air compressor air circuit structure 100 is in parallel mode, the third solenoid valve 83 controls the seventh airflow passage 77 to open and the sixth airflow passage 76 to close. At this time, the airflow flowing to the third solenoid valve 83 flows into the overflow valve 6 for regulating the output gas pressure and maintaining system stability.

[0032] like Figure 1 As shown, in series mode, the air compressor's air path structure 100 operates as follows: First, the first solenoid valve 81 controls the opening of the first airflow passage 71 and the closing of the second airflow passage 72. At this time, external gas enters the first compressor 1 through the filter 4 for compression. Next, the second solenoid valve 82 controls the opening of the third airflow passage 73 and the closing of the fourth airflow passage 74. At this time, the gas output from the first compressor 1 enters the second compressor 2 through the third airflow passage 73 for further compression. Then, the gas compressed by the second compressor 2 flows directly to the third solenoid valve 83. Finally, the third solenoid valve 83 controls the opening of the sixth airflow passage 76 and the closing of the seventh airflow passage 77. At this time, the airflow flowing to the third solenoid valve 83 flows to the dryer 5 for drying and then output. Because the gas undergoes two stages of compression and drying in series mode—first compressor 1 and second compressor 2—it is suitable for high-pressure scenarios, such as supplying air to the air suspension of a car.

[0033] like Figure 2 As shown, in parallel mode, the air compressor's air circuit structure 100 firstly controls the simultaneous opening of the first airflow passage 71 and the second airflow passage 72, allowing external gas to enter the first compressor 1 and the second compressor 2 respectively. Subsequently, the second solenoid valve 82 controls the opening of the fourth airflow passage 74 and the closing of the third airflow passage 73, allowing the gas output from the first compressor 1 to flow directly to the third solenoid valve 83. Simultaneously, the gas compressed by the second compressor 2 flows directly to the third solenoid valve 83. Finally, the third solenoid valve 83 controls the opening of the seventh airflow passage 77 and the closing of the sixth airflow passage 76, allowing the airflow to flow to the third solenoid valve 83 to flow into the overflow valve 6, regulating the output gas pressure and maintaining system stability. Because the gas is simultaneously compressed and supplied by the first compressor 1 and the second compressor 2 in parallel mode, it is suitable for high-flow-rate applications such as oxygen concentrators and tire inflators.

[0034] The air compressor air circuit structure 100 of this utility model includes a first compressor 1, a second compressor 2, a drive motor 3 connected between the first compressor 1 and the second compressor 2, a filter 4 disposed at the gas input end, a dryer 5 and an overflow valve 6 disposed at the gas output end, an intermediate air circuit 7, and a solenoid valve assembly 8 disposed on the intermediate air circuit 7. A single drive motor 3 drives the first compressor 1 and the second compressor 2 to rotate. The two ends of the drive motor 3 are respectively connected to the first compressor 1 and the second compressor 2. Compared with using two independent drive motors to drive two compressors separately, this reduces the number of motors used, thereby reducing production costs. A filter 4 is also provided to filter impurities in the gas, ensuring the cleanliness of the gas entering the compressor, reducing wear on internal compressor components, and extending the service life of the equipment. A dryer 5 is provided to dry the compressed gas in series mode. The air compressor undergoes a drying process to ensure the dryness of the output gas and prevent moisture from affecting subsequent equipment or applications. An overflow valve 6 is installed to regulate the output gas pressure in parallel mode, maintaining system stability and preventing damage from excessive pressure. By setting up a series-parallel air path structure, the gas undergoes two stages of compression in series mode, meeting high-pressure requirements; the series mode is suitable for high-pressure gas supply. In parallel mode, two compressors compress and supply gas simultaneously, meeting high-flow requirements. The flexible air path control method can adapt to various application scenarios with different pressure and flow requirements. The solenoid valve assembly 8, including a first solenoid valve 81, a second solenoid valve 82, and a third solenoid valve 83, allows for convenient control of the opening and closing of each airflow path, enabling rapid switching between series and parallel modes to adapt to different operating needs.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] It should be understood that the terms "length", "width", "up", "down", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 are not intended to 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 this utility model.

[0037] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An air path structure of an air compressor, characterized by: The air compressor gas path structure comprises a first compressor, a second compressor, a driving motor connected between the first compressor and the second compressor, a filter arranged at a gas input end, an intermediate gas path arranged at a gas output end, and an electromagnetic valve assembly arranged on the intermediate gas path, wherein the intermediate gas path comprises a plurality of gas flow passages, and the electromagnetic valve assembly comprises a first electromagnetic valve and a second electromagnetic valve arranged on one side of the filter; in series mode, the first electromagnetic valve controls the first gas flow passage to be open and the second gas flow passage to be closed, and at this time, external gas can only enter the first compressor through the filter; in parallel mode, the first electromagnetic valve controls the first gas flow passage and the second gas flow passage to be open at the same time, and at this time, external gas enters the first compressor and the second compressor respectively.

2. The air path structure of an air compressor according to claim 1, characterized by: One end of the first gas flow passage is connected to the filter, and the other end of the second gas flow passage is connected to the inlet of the first compressor; one end of the second gas flow passage is connected to the filter, and the other end of the second gas flow passage is connected to the inlet of the second compressor.

3. The air path structure of an air compressor according to claim 1, characterized by: The electromagnetic valve assembly further comprises a third electromagnetic valve, one end of a third gas flow passage is connected to the outlet of the first compressor, the other end of the third gas flow passage is connected to the inlet of the second compressor, one end of a fourth gas flow passage is connected to the outlet of the first compressor, and the other end of the fourth gas flow passage is connected to the third electromagnetic valve.

4. The air path structure of the air compressor according to claim 3, characterized by: In series mode, the second electromagnetic valve controls the third gas flow passage to be open and the fourth gas flow passage to be closed, and at this time, the gas output by the first compressor enters the second compressor through the third gas flow passage for further compression; in parallel mode, the second electromagnetic valve controls the fourth gas flow passage to be open and the third gas flow passage to be closed, and at this time, the gas output by the first compressor directly flows to the third electromagnetic valve.

5. The air path structure of the air compressor according to claim 3, characterized by: One end of a fifth gas flow passage is connected to the outlet of the second compressor, and the other end of the fifth gas flow passage is connected to the third electromagnetic valve, and the gas compressed by the second compressor directly flows to the third electromagnetic valve.

6. The air path structure of the air compressor according to claim 3, characterized by: The air compressor gas path structure further comprises a dryer and an overflow valve.

7. The air path structure of the air compressor according to claim 6, characterized by: One end of a sixth gas flow passage is connected to the third electromagnetic valve, and the other end of the sixth gas flow passage is connected to the dryer; one end of a seventh gas flow passage is connected to the third electromagnetic valve, and the other end of the seventh gas flow passage is connected to the overflow valve.

8. The air path structure of the air compressor according to claim 7, characterized by: In series mode, the third electromagnetic valve controls the sixth gas flow passage to be open and the seventh gas flow passage to be closed, and at this time, the gas flowing to the third electromagnetic valve flows to the dryer; in parallel mode, the third electromagnetic valve controls the seventh gas flow passage to be open and the sixth gas flow passage to be closed, and at this time, the gas flowing to the third electromagnetic valve flows to the overflow valve.

9. The air path structure of an air compressor according to claim 1, characterized by: The first compressor and the second compressor are double-stage piston compressors, and the first compressor and the second compressor respectively compress the gas in the gas cylinders at both ends through a one-way valve piece.

10. The air path structure of an air compressor according to claim 1, characterized by: One end of the driving motor shaft is connected to the first compressor, and the other end of the driving motor is connected to the second compressor.

Images