Air compressor filter device and air compressor

Abstract

This utility model discloses an air compressor filter device and an air compressor. The air compressor filter device includes a filter housing; a filter cover; the filter cover also forms a second chamber opening towards a first chamber; the air compressor filter device further includes: a filter shaft with opposing front and rear ends, the filter shaft having a T-shaped channel structure, the first and second ports of the T-shaped channel structure being located at the front end of the filter shaft and communicating with the second chamber, the third port of the T-shaped channel structure communicating with the inner hole of the air outlet connector; and an L-shaped channel structure, the L-shaped channel structure being located within the first chamber, one end of the L-shaped channel structure communicating with the air inlet, and the other end communicating with the second chamber. This application, by designing the L-shaped and T-shaped channel structures, changes the airflow path, allowing noise to circulate inside the filter, reducing the propagation decibels, and effectively reducing the noise generated during air compressor operation.

Description

Technical Field

[0001] This application relates to the field of air compressor devices, and more particularly to an air compressor filter device and an air compressor. Background Technology

[0002] An air compressor is a device that compresses air, primarily used to provide compressed air as a power source so that pneumatic tools (such as nailing tools, sanding tools, and painting tools) can function properly. During operation, the reciprocating motion of the piston compresses air, generating significant noise that has been a persistent source of annoyance for consumers. Currently, traditional filters on the market only serve to remove dust and impurities, without addressing structural improvements to the air compressor's filter system to reduce noise.

[0003] Therefore, the market urgently needs to provide an air compressor filter device and an air compressor to overcome the shortcomings of existing technologies. Utility Model Content

[0004] In view of the above technical problems, the purpose of this application is to provide an air compressor filter device and an air compressor.

[0005] To achieve the above objectives, this application employs the following technical solution: This application provides an air compressor filter device, comprising: a filter housing for forming a first chamber with one end open; an air inlet hole provided on the side wall of the filter housing, and an air outlet connector provided at the bottom of the first chamber; a filter cover for closing the opening of the first chamber; the filter cover is further used to form a second chamber opening toward the first chamber; the air compressor filter device further comprises: The filter shaft has a front end and a rear end. The filter shaft is provided with a T-shaped channel structure. The first port and the second port of the T-shaped channel structure are located at the front end of the filter shaft and communicate with the second chamber. The third port of the T-shaped channel structure communicates with the inner hole of the air outlet connector. An L-shaped channel structure is disposed in the first chamber, with one end of the L-shaped channel structure connected to the air inlet and the other end connected to the second chamber.

[0006] A further technical solution is that the bottom of the second chamber is provided with a shaft hole, and a portion of the front end of the filter shaft extends outward from the shaft hole; the outer peripheral surface of the extended portion of the front end of the filter shaft is provided with an annular fixing part, and the front end of the filter shaft is provided with a retaining part on the outer peripheral surface of the portion in the second chamber; the annular fixing part and the retaining part cooperate to make the lower surface of the annular fixing part tightly abut against the outer surface of the filter cover.

[0007] A further technical solution is that the T-shaped channel structure includes a horizontal channel and a vertical channel that are interconnected; the horizontal channel is located at the rear end of the filter axis and forms a first port and a second port that are connected to the second chamber; one end of the vertical channel serves as a third port that is connected to the inner hole of the air outlet connector, and the other end is vertically connected to the horizontal channel; one end of the L-shaped channel structure is connected to the air inlet, and the other end is connected to the first port and the second port of the T-shaped channel structure.

[0008] A further technical solution is that the air outlet connector is provided with an external thread, the rear end of the filter shaft is inserted into the inner hole of the air outlet connector, and the third port is provided at the rear end of the filter shaft to communicate with the inner hole of the air outlet connector.

[0009] A further technical solution includes: a filter sponge, disposed in the remaining space of the first chamber and / or the second chamber.

[0010] A further technical solution is that the air inlet is a D-shaped air inlet, which is located on the side wall of the filter housing near the bottom of the first chamber.

[0011] A further technical solution is that the straight edge of the D-shaped air inlet is close to the bottom of the first chamber, and the arc-shaped edge is far away from the bottom of the first chamber.

[0012] A further technical solution is that the filter housing and the filter cover are fixed by threaded connection or snap-fit ​​connection.

[0013] A further technical solution is that the edge of the filter cover is provided with at least three protruding buckles at equal intervals, and the corresponding position of the filter housing is provided with a slot that cooperates with the buckles. The buckles are used to insert into the slots to fix the filter cover to the filter housing.

[0014] A further technical solution is that a sealing gasket is provided between the filter cover and the filter housing.

[0015] This application also provides an air compressor including the air compressor filter device described in any of the above claims.

[0016] Compared with related technologies, this utility model provides an air compressor filter device and an air compressor. This air compressor filter device achieves the function of reducing air compressor operating noise by optimizing the airflow path and structural design. Specifically, air enters the L-shaped channel structure through the air inlet on the side wall of the filter housing, and flows to the second chamber through the L-shaped channel structure. One end of the L-shaped channel structure is connected to the air inlet, and the other end is connected to the second chamber, changing the direction of airflow and initially reducing the impact force of the airflow. After entering the second chamber, the air flows into the air compressor through the T-shaped channel structure on the filter shaft. The first and second ports of the T-shaped channel structure are located at the front end of the filter shaft and are connected to the second chamber; the third port is connected to the inner hole of the air outlet connector, guiding the air to the air inlet of the air compressor.

[0017] Advantages include: the design of L-shaped and T-shaped channel structures changes the airflow path, allowing noise to circulate inside the filter and reducing its propagation decibel level.

[0018] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0019] Figure 1 This illustration shows a structural schematic diagram of an air compressor filter device provided in an embodiment of this application; Figure 2 An exploded view of the structure of an air compressor filter device provided in an embodiment of this application is shown; Figure 3 This paper shows a schematic diagram of the structure of a filter housing provided in an embodiment of this application; Figure 4 This illustration shows a top view of a filter housing according to an embodiment of this application. Figure 5 This illustration shows a schematic diagram of the structure of a filter cover according to an embodiment of this application; Figure 6 A schematic diagram of the structure of a filter shaft provided in an embodiment of this application is shown.

[0020] The diagram shows: 100, filter housing; 200, filter top cover; 300, filter shaft; 400, L-shaped channel structure; 500, filter sponge; 110, first chamber; 120, D-shaped air inlet; 130, air outlet connector; 131, inner hole of air outlet connector; 210, second chamber; 310, first port; 320, second port; 330, third port; 340, annular fixing part; 350, holding part; 410, air outlet end of L-shaped channel structure. Detailed Implementation

[0021] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many other different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0022] The technical solutions of the embodiments of this application and how the technical solutions of the embodiments of this application solve the above-mentioned technical problems will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. The order of description of the embodiments below is not intended to limit the preferred order of embodiments. The same or similar concepts or processes may not be described again in some embodiments. Obviously, the described embodiments are some embodiments of the embodiments of this application, but not all embodiments.

[0023] Example 1.

[0024] This embodiment provides an air compressor filter device, which includes: A filter housing is provided to form a first chamber with one end open; an air inlet is provided on the side wall of the filter housing, and an air outlet is provided at the bottom of the first chamber; A filter cover is used to close the opening of the first chamber; the filter cover is also used to form a second chamber that opens toward the first chamber; The filter shaft has a front end and a rear end. The filter shaft is provided with a T-shaped channel structure. The first port and the second port of the T-shaped channel structure are located at the front end of the filter shaft and communicate with the second chamber. The third port of the T-shaped channel structure communicates with the inner hole of the air outlet connector. An L-shaped channel structure is disposed in the first chamber, with one end of the L-shaped channel structure connected to the air inlet and the other end connected to the second chamber.

[0025] This air compressor filter device reduces operating noise by optimizing the airflow path and structural design. Specifically, air enters the L-shaped channel structure through the inlet on the side wall of the filter housing and flows to the second chamber. One end of the L-shaped channel structure connects to the inlet, and the other end connects to the second chamber, changing the direction of airflow and initially reducing the impact force of the airflow. After entering the second chamber, the air flows into the air compressor through the T-shaped channel structure on the filter shaft. The first and second ports of the T-shaped channel structure are located at the front end of the filter shaft and connect to the second chamber; the third port connects to the inner hole of the outlet connector, guiding the air to the air compressor's inlet.

[0026] Therefore, by designing L-shaped and T-shaped channel structures, the airflow path is changed, allowing noise to circulate inside the filter and reducing its decibel propagation.

[0027] In some embodiments, the bottom of the second chamber is provided with a shaft hole, and a portion of the front end of the filter shaft extends outward from the shaft hole; the outer peripheral surface of the extended portion of the front end of the filter shaft is provided with an annular fixing part, and the front end of the filter shaft is provided with a retaining part on the outer peripheral surface of the portion in the second chamber. The annular fixing part and the retaining part cooperate to make the lower surface of the annular fixing part tightly abut against the outer surface of the filter cover.

[0028] The front end of the filter shaft extends outward from the shaft hole at the bottom of the second chamber. An annular fixing part is provided on the outer circumferential surface of the extended front end of the filter shaft, and its outer diameter is larger than the diameter of the shaft hole. The outer diameter of the front end of the filter shaft is larger than the diameter of the shaft hole to achieve an interference fit, preventing air from leaking from the gap between them, and allowing the front end of the filter shaft to be tightly embedded in the shaft hole, forming a mechanical limit.

[0029] In some embodiments, the T-shaped channel structure includes a horizontal channel and a vertical channel that are interconnected; the horizontal channel is located at the rear end of the filter axis and forms a first port and a second port that communicate with the second chamber; one end of the vertical channel serves as a third port that communicates with the inner hole of the air outlet connector, and the other end is vertically connected to the horizontal channel; one end of the L-shaped channel structure is connected to the air inlet, and the other end is connected to the first port and the second port of the T-shaped channel structure.

[0030] Air flows into the second chamber through the L-shaped channel structure. A horizontal channel, located at the rear end of the filter shaft, has a first port and a second port, both connected to the second chamber. In this case, air flows into the second chamber through the horizontal channel of the T-shaped channel structure. The filtered air enters the inner hole of the outlet connector through the third port of the vertical channel, ultimately flowing towards the air compressor's inlet.

[0031] In some embodiments, the air outlet connector is provided with an external thread, the rear end of the filter shaft is inserted into the inner hole of the air outlet connector, and the third port is provided at the rear end of the filter shaft to communicate with the inner hole of the air outlet connector.

[0032] The threaded outlet connector of this embodiment is used for threaded connection with the air inlet of the air compressor. A third port is provided at the rear end of the filter shaft, which communicates with the inner hole of the outlet connector.

[0033] The airflow path is as follows: After passing through the L-shaped channel inside the filter, the air enters the horizontal channel at the filter shaft. The air then flows through the horizontal channel to the vertical channel and finally enters the inner hole of the outlet connector through the third port. The external thread design of the outlet connector allows for a tight connection with the air compressor's inlet or other piping components, ensuring smooth airflow into the air compressor.

[0034] In some embodiments, a filter sponge is also included, disposed in the remaining space of the first chamber and / or the second chamber.

[0035] The air entering the chamber flows through the filter sponge, which is placed in the remaining space of the chamber. It can fully contact the air entering the corresponding chamber and effectively filter dust, impurities and other particulate matter in the air. The above technical solution achieves the following effects: the filter sponge, positioned in the remaining space of the corresponding chamber, can fully contact the air entering the chamber, effectively filtering dust, impurities, and other particulate matter from the air, ensuring the cleanliness of the air entering the air compressor, and improving the working efficiency and service life of the air compressor. The filter sponge not only performs a filtering function but also absorbs noise generated during airflow to a certain extent, further reducing noise pollution during air compressor operation and improving the comfort of the working environment.

[0036] In some embodiments, the air inlet is a D-shaped air inlet, which is located on the side wall of the filter housing near the bottom of the first chamber, with the straight edge of the D-shaped air inlet close to the bottom of the first chamber and the arc-shaped edge away from the bottom of the first chamber.

[0037] The D-shaped design gives the air intake a straight edge and a curved edge, effectively controlling the direction and path of airflow. Air enters the first chamber through the D-shaped air intake on the side wall of the filter housing. Due to the special shape of the D-shaped air intake, the air is guided to a position near the bottom when entering the first chamber, further optimizing the overall airflow path.

[0038] In some embodiments, the filter housing and the filter cover are secured by a threaded connection or a snap-fit ​​connection.

[0039] Both threaded and snap-fit ​​connections ensure a stable connection between the filter cover and the filter housing, preventing loosening due to vibration during air compressor operation and improving the reliability of the device.

[0040] In some embodiments, the edge of the filter cover is provided with at least three protruding buckles at equal intervals, and the corresponding position of the filter housing is provided with a slot that engages with the buckles. The buckles are used to insert into the slots to fix the filter cover to the filter housing.

[0041] The snap-fit ​​design makes installing and removing the filter cover easier. Users can quickly secure the filter cover by simply aligning the snaps with the slots and pressing or fastening them; to remove it, simply pry the snaps open to release the filter cover, reducing maintenance time and costs.

[0042] In some embodiments, a sealing gasket is provided between the filter cover and the filter housing. The main function of the sealing gasket is to enhance the seal between the filter cover and the filter housing, preventing air leakage from the connection between them.

[0043] As an example, see Figures 1 to 6 An air compressor filter device is provided, comprising: a filter housing 100, a filter cover 200, a filter shaft 300, an L-shaped channel structure 400, and a filter sponge 500.

[0044] The filter housing 100 is made of high-strength plastic or metal, forming a first chamber 110 with one end open. A D-shaped air inlet 120 is provided on the side wall of the housing, located near the bottom of the first chamber 110, with its straight edge close to the bottom and its curved edge away from the bottom. An outward-facing air outlet 130 is located at the bottom (center) of the first chamber 110, and the air outlet 130 has external threads for connection to the air inlet of an air compressor.

[0045] The filter cover 200 is used to close the opening of the first chamber 110. A second chamber 210 is formed inside the cover, opening towards the first chamber 110. The bottom (center position) of the second chamber 210 is provided with a shaft hole for inserting a portion of the front end of the filter shaft 300.

[0046] The filter shaft 300 is a partially T-shaped hollow tubular structure with opposing front and rear ends. The T-shaped channel structure includes interconnected horizontal and vertical channels. The horizontal channel is located at the rear end of the filter shaft 300 and has a first port 310 and a second port 320, which are respectively connected to the second chamber 210. One end of the vertical channel serves as a third port 330, connecting to the inner hole 131 of the air outlet connector; the other end is vertically connected to the horizontal channel (i.e., the airflow channel between the first and second ports).

[0047] The front end of the filter shaft 300 is inserted into the shaft hole at the bottom of the second chamber 210, forming an interference fit. An annular fixing part 340 is provided on the outer circumferential surface of the protruding front end, and the outer diameter of the annular fixing part 340 is larger than the diameter of the shaft hole. A retaining part 350 is provided on the outer circumferential surface of the portion of the filter shaft 300 inside the second chamber 210. The annular fixing part 340 engages with the retaining part 350, ensuring that the lower surface of the annular fixing part 340 tightly abuts against the outer surface of the filter cover 200. The rear end of the filter shaft 300 is inserted into the inner hole 131 of the air outlet connector, ensuring that the third port 330 communicates with the inner hole 131 of the air outlet connector.

[0048] An L-shaped channel structure 400 is disposed within the first chamber 110 and comprises two mutually perpendicular channel sections (a first channel section and a second channel section). The air inlet end of the first channel section (the air inlet end of the L-shaped channel structure 400) communicates with a D-shaped air inlet hole 120 on the side wall of the filter housing 100. The air outlet end of the second channel section (the air outlet end 410 of the L-shaped channel structure) communicates with the second chamber 210, and through the second chamber 210, communicates with the first port 310 and the second port 320 of the T-shaped channel structure. The L-shaped channel structure 400 is used to guide air to flow into the second chamber 210. The air outlet end of the first channel section communicates with the air inlet end of the second channel section.

[0049] The filter sponge 500 fills the remaining space in the first chamber 110 and the remaining space in the second chamber 210 to filter dust, impurities and other particulate matter in the air, while absorbing some noise and further reducing the noise during the operation of the air compressor.

[0050] The filter cover 200 and the filter housing 100 are connected by snap-fit ​​fasteners. The filter cover 200 has at least three evenly spaced protruding snap-fit ​​fasteners along its edge, and the filter housing 100 has corresponding slots for engaging the snap-fit ​​fasteners. The snap-fit ​​fasteners are inserted into the slots to secure the filter cover 200 to the filter housing 100. A sealing gasket is provided between the filter cover 200 and the filter housing 100 to enhance the seal at the connection and prevent air leakage.

[0051] During operation, air enters the L-shaped channel structure 400 within the first chamber 110 through the D-shaped air inlet 120 on the side wall of the filter housing 100, and then flows to the second chamber 210. The L-shaped channel structure 400 changes the direction of airflow, reducing the impact force of the airflow. After entering the second chamber 210, the air is filtered by the filter sponge 500, removing dust, impurities, and other particulate matter from the air. The filter sponge 500 also absorbs some noise, reducing noise transmission. The filtered air flows into the air compressor through the horizontal and vertical channels of the T-shaped channel structure of the filter shaft 300. The horizontal and vertical channels of the T-shaped channel structure optimize the airflow path, further reducing noise. The external thread design of the air outlet connector 130 ensures a stable and sealed connection with the air compressor.

[0052] Therefore, filling the remaining space in the chamber with filter sponge effectively intercepts dust, impurities, and other particulate matter in the gas, ensuring high cleanliness of the gas entering the air compressor, thereby improving the compressor's operating efficiency and service life. Through multiple designs including D-shaped air inlets, L-shaped channel structures, and T-shaped channel structures, the gas flow path is optimized, and noise circulates within the filter, significantly reducing the noise level during air compressor operation. Simultaneously, the filter sponge not only filters but also has a certain sound-dampening function, further reducing noise transmission and improving user comfort. The snap-fit ​​connection design makes installing and removing the filter cover more convenient. Users simply align the snaps with the slots and press or fasten to quickly secure the filter cover; for removal, simply pry the snaps to loosen the filter cover, reducing maintenance time and costs and facilitating installation.

[0053] Example 2.

[0054] This embodiment provides an air compressor, including the air compressor filter device described in any one of Embodiments 1. It can be assumed that the air compressor filter device is located at the air inlet end of the air compressor.

[0055] The air compressor provided in this application is, for example, a portable piston air compressor or a mobile screw air compressor. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0056] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are configured to distinguish similar objects and are not necessarily configured to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0057] This application describes the invention from the perspectives of purpose, performance, progress, and novelty, and it meets the functional enhancement and use requirements emphasized by the Patent Law. The above description and drawings are merely preferred embodiments of this application and are not intended to limit this application. Therefore, all structures, devices, features, etc., that are similar to or identical to those of this application, i.e., all equivalent substitutions or modifications made in accordance with the scope of this patent application, shall fall within the scope of protection of this patent application.

Claims

1. An air compressor filter device, comprising: A filter housing is provided to form a first chamber with one end open; an air inlet is provided on the side wall of the filter housing, and an air outlet is provided at the bottom of the first chamber; A filter cover for sealing the opening of the first chamber; The filter cover is characterized in that it is further configured to form a second chamber opening toward the first chamber; the air compressor filter assembly further includes: The filter shaft has a front end and a rear end. The filter shaft is provided with a T-shaped channel structure. The first port and the second port of the T-shaped channel structure are located at the front end of the filter shaft and communicate with the second chamber. The third port of the T-shaped channel structure communicates with the inner hole of the air outlet connector. An L-shaped channel structure is provided in the first chamber, with one end of the L-shaped channel structure communicating with the air inlet and the other end communicating with the second chamber; A filter sponge is disposed in the remaining space of the first chamber and / or the second chamber.

2. The air compressor filter device according to claim 1, characterized in that, The bottom of the second chamber is provided with a shaft hole, and a portion of the front end of the filter shaft extends outward from the shaft hole; the outer peripheral surface of the extended portion of the front end of the filter shaft is provided with an annular fixing part, and the front end of the filter shaft is provided with a retaining part on the outer peripheral surface of the portion in the second chamber. The annular fixing part and the retaining part cooperate to make the lower surface of the annular fixing part tightly abut against the outer surface of the filter cover.

3. The air compressor filter device according to claim 1, characterized in that, The T-shaped channel structure includes a horizontal channel and a vertical channel that are interconnected; the horizontal channel is located at the rear end of the filter axis and forms a first port and a second port that are connected to the second chamber; one end of the vertical channel serves as a third port that is connected to the inner hole of the air outlet connector, and the other end is vertically connected to the horizontal channel; one end of the L-shaped channel structure is connected to the air inlet, and the other end is connected to the first port and the second port of the T-shaped channel structure.

4. The air compressor filter device according to claim 3, characterized in that, The air outlet connector is provided with an external thread, the rear end of the filter shaft is inserted into the inner hole of the air outlet connector, and the third port is provided at the rear end of the filter shaft to communicate with the inner hole of the air outlet connector.

5. The air compressor filter device according to claim 1, characterized in that, The air inlet is a D-shaped air inlet, which is located on the side wall of the filter housing near the bottom of the first chamber.

6. The air compressor filter device according to claim 5, characterized in that, The straight edge of the D-shaped air inlet is close to the bottom of the first chamber, and the arc-shaped edge is far away from the bottom of the first chamber.

7. The air compressor filter device according to claim 1, characterized in that, The filter housing and the filter cover are fixed by threaded connection or snap-fit ​​connection.

8. The air compressor filter device according to claim 7, characterized in that, The filter cover has at least three protruding buckles at equal intervals along its edge, and the filter housing has corresponding slots that engage with the buckles. The buckles are inserted into the slots to fix the filter cover to the filter housing.

9. The air compressor filter device according to claim 1, characterized in that, A sealing gasket is provided between the filter cover and the filter housing.

10. An air compressor, characterized in that, Includes the air compressor filter device according to any one of claims 1-9.

Images