Air filter box and air compressor
By using a dual-chamber structure and integrated design, the air filter box solves the problems of large size and high intake pressure loss, achieving energy saving, noise reduction, and structural simplification.
Patent Information
- Application Number
- CN202521772045.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-19
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-19
AI Technical Summary
Existing air filter boxes have a long and bulky structure. The complex design of the air inlet box results in a long airflow path, high air intake pressure loss, and increased power consumption.
The air filter box adopts a dual-chamber structure, including an inlet chamber and an outlet chamber, which are connected by a plate air filter. Combined with a baffle plate and an outlet guide ring, the gas flow path is optimized, and noise reduction function is integrated into the box.
The simplified structure reduces space occupation, lowers intake pressure loss, improves energy efficiency, effectively reduces noise, and extends equipment life.
Smart Images
Figure CN224679647U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of air compression, and more particularly to an air filter box and an air compressor. Background Technology
[0002] With the continuous development of the air compressor industry, high efficiency, energy saving, and noise reduction have become the industry's technological standards. An air compressor is a device that increases the density of gas molecules to raise the pressure of compressed air; it is a power device that converts mechanical energy into gas pressure energy and is mainly used in industrial production and energy storage. When an air filter box works in conjunction with an air compressor, it can significantly reduce the oil content in the compressed air, preventing oil and gas from contaminating pneumatic components.
[0003] Existing technologies often employ a cylindrical air filter and a unidirectional air intake box design. The unidirectional air intake box achieves noise reduction by changing the airflow direction multiple times, but it suffers from problems such as a long and bulky structure that occupies a significant amount of unit space. Furthermore, the multiple changes in airflow direction by the air intake box also lead to a complex airflow path, resulting in higher intake pressure loss and increased power consumption.
[0004] Therefore, it is necessary to provide an improved air filter box and air compressor to solve the above problems. Utility Model Content
[0005] This application provides an air filter box and an air compressor with a simple structure, small footprint, and low intake pressure loss.
[0006] This application provides an air filter box, including: a box body, an inner partition, and a plate air filter. The box body has a cavity, and the inner partition and the plate air filter are disposed in the cavity. One side of the inner partition and the plate air filter forms an air inlet cavity, and the other side of the inner partition and the plate air filter forms an air outlet cavity. The air inlet cavity and the air outlet cavity are connected through the plate air filter. The box body is provided with an air inlet communicating with the air inlet cavity and an air outlet communicating with the air outlet cavity.
[0007] Furthermore, the plate air filter is located in the lower middle part of the cavity, and the air inlet and the air outlet are located near the top of the housing. The air inlet and the air outlet are separated by the inner partition.
[0008] Furthermore, the air filter box also includes a guide plate, which is disposed inside the air inlet. The cross-section of the guide plate is "V" shaped, so as to guide the gas from the external space of the air filter box to the upper part of the air inlet chamber and the lower middle part of the air inlet chamber in sequence.
[0009] Furthermore, the air filter box also includes an outlet guide ring, which is disposed inside the air outlet, and the air outlet chamber is connected to the compressor host through the outlet guide ring.
[0010] Furthermore, the gas flow path sequentially includes the guide plate, the upper part of the air inlet chamber, the middle and lower part of the air inlet chamber, the plate air filter, the bottom of the air outlet chamber, the top of the air outlet chamber, the outlet guide ring, and the compressor host.
[0011] Furthermore, the housing includes a corner column panel and a corner column inner plate arranged opposite each other, as well as an upper cover plate and a lower cover plate arranged opposite each other. The corner column panel, the upper cover plate, the corner column inner plate, and the lower cover plate together form the cavity; the corner column panel, the upper cover plate, the inner partition plate, the plate air filter, and the lower cover plate together form the air inlet cavity; the upper cover plate, the corner column inner plate, the inner partition plate, the plate air filter, and the lower cover plate together form the air outlet cavity.
[0012] Furthermore, the plate air filter is disposed on the lower cover plate and close to the inner plate of the corner post. The inner plate of the corner post is provided with an air filter cover plate, which can be opened to replace the plate air filter. A sealing element is provided between the air filter cover plate and the inner plate of the corner post.
[0013] Furthermore, the corner column inner plate includes a first inner plate and a second inner plate that are perpendicular to each other, and the air filter cover is provided on both the first inner plate and the second inner plate; the plate air filter includes a first air filter and a second air filter that are perpendicular to each other, the first air filter is directly opposite the air filter cover on the first inner plate, and the second air filter is directly opposite the air filter cover on the second inner plate.
[0014] Furthermore, the corner pillar panel includes a first panel and a second panel that are perpendicular to each other. Two sound insulation components are provided on the side of the corner pillar panel facing the cavity, and the two sound insulation components are respectively attached to the inner sidewalls of the first panel and the second panel.
[0015] This application also provides an air compressor, including a compressor main unit and an air filter box as described above, wherein the air filter box is connected to the compressor main unit through the air outlet.
[0016] This application's plate-type air filter combines filtration and chamber separation functions, simplifying the structure and saving space. The dual-chamber structure of the inlet and outlet chambers extends the propagation path of gas and noise within the chambers, achieving noise reduction. Simultaneously, the integrated design of the air filter box reduces component redundancy, lowers system pressure loss, and improves energy efficiency. Attached Figure Description
[0017] Figure 1 This is a perspective view of an air filter box according to an exemplary embodiment of this application.
[0018] Figure 2 yes Figure 1 A perspective view of the air filter box from another angle.
[0019] Figure 3 yes Figure 1 The diagram shows a cross-sectional view of the air filter box.
[0020] Figure 4 yes Figure 1 The diagram shows a cross-sectional view of the air filter box from another perspective.
[0021] Figure 5 yes Figure 1 The diagram shown is a perspective view of the air filter box without the corner column inner plate.
[0022] Figure 6 yes Figure 1 The diagram shows a cross-sectional view of the air filter box from another perspective.
[0023] Explanation of icon numbers:
[0024] 10. Housing; 100. Cavity; 101. Air Inlet Chamber; 102. Air Outlet Chamber; 11. Air Inlet; 12. Air Outlet; 13. Baffle Plate; 14. Outlet Guide Ring; 15. Corner Pillar Panel; 151. First Panel; 152. Second Panel; 16. Top Cover; 17. Corner Pillar Inner Panel; 171. Air Filter Cover; 172. First Inner Panel; 173. Second Inner Panel; 18. Bottom Cover; 20. Inner Baffle; 21. First Baffle; 22. Second Baffle; 23. Third Baffle; 30. Plate Air Filter; 31. First Air Filter; 32. Second Air Filter; 40. Sealing Component; 50. Sound Insulation Component. Detailed Implementation
[0025] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0026] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.
[0027] See Figures 1 to 3As shown, this application provides an air filter box, including a box body 10, an inner partition 20, and a plate air filter 30. The box body 10 has a cavity 100, within which the inner partition 20 and the plate air filter 30 are disposed. The inner partition 20 connects to the plate air filter 30 and separates the cavity 100 into an air inlet cavity 101 and an air outlet cavity 102. The inner partition 20 is located in the upper middle part of the cavity 100. The plate air filter 30 is located in the lower middle part of the cavity 100.
[0028] The housing 10 is provided with an air inlet 11 and an air outlet 12. The air inlet 11 is connected to the air inlet chamber 101. The air outlet 12 is connected to the air outlet chamber 102. One side of the inner partition 20 and the plate air filter 30 forms the air inlet chamber 101, and the other side of the inner partition 20 and the plate air filter 30 forms the air outlet chamber 102. This application uses the plate air filter 30 and the inner partition 20 as partitions to form a dual-chamber structure, which optimizes the space occupation and allows air filtration and noise attenuation to be integrated within a limited space.
[0029] According to the embodiments of this application, the air intake chamber 101 and the air outlet chamber 102 are connected by a plate air filter 30, which reduces the intake pressure loss and improves the specific power and energy saving effect.
[0030] The air inlet 11 and air outlet 12 are located near the top of the housing 10. The air inlet 11 and air outlet 12 are separated by an inner partition 20. Since the plate air filter 30 is located in the lower middle section and the air inlet 11 and air outlet 12 are at the top, the air must flow downwards through the plate air filter 30 and then upwards, extending the air or noise propagation path and thus enhancing the filtration and noise reduction effect. Simultaneously, the inner partition 20 separates the air inlet 11 and air outlet 12, preventing airflow turbulence and optimizing pressure loss reduction.
[0031] The air filter box also includes a baffle plate 13 and an outlet guide ring 14. The air inlet 11 is a rectangular air inlet, and the baffle plate 13 is disposed inside the air inlet 11. The cross-section of the baffle plate 13 is "V" shaped to guide the gas from the external space of the air filter box to the upper part and the lower middle part of the air inlet chamber 101 in sequence. In the embodiments of this application, the included angle of the baffle plate 13 is greater than or equal to 90 degrees and less than or equal to 180 degrees.
[0032] According to other embodiments of this application, a guide plate with an arc-shaped cross section can also be used, with the middle part of the guide plate arching upwards. Similarly, the gas is guided from the external space of the air filter box to the upper part of the air intake chamber 101 and the lower middle part of the air intake chamber 101 in sequence through the guide plate.
[0033] In the embodiments of this application, the air outlet 12 is a circular air outlet, and the outlet guide ring 14 is disposed inside the air outlet 12. The air outlet chamber 102 is connected to the compressor host (not shown) through the outlet guide ring 14. The outlet guide ring 14 can smoothly connect to the compressor host, reduce airflow resistance, and further reduce pressure loss.
[0034] According to other embodiments of this application, the outlet guide ring can be configured as a rectangular or other polygonal structure. Alternatively, the outlet guide ring can be omitted, and the compressor and air outlet can be directly connected.
[0035] Please also see Figure 4 As shown, the gas flow path sequentially includes the guide plate 13, the upper part of the intake chamber 101, the lower middle part of the intake chamber 101, the plate air filter 30, the bottom of the outlet chamber 102, the top of the outlet chamber 102, the outlet guide ring 14, and the compressor. The sound propagation path of the compressor is opposite to the gas flow path and includes the compressor, the outlet guide ring 14, the top of the outlet chamber 102, the bottom of the outlet chamber 102, the plate air filter 30, the lower middle part of the intake chamber 101, the upper part of the intake chamber 101, and the guide plate 13.
[0036] The housing 10 includes a corner post panel 15, an upper cover plate 16, a corner post inner panel 17, and a lower cover plate 18. The corner post panel 15 and the corner post inner panel 17 are arranged opposite to each other. The upper cover plate 16 and the lower cover plate 18 are arranged opposite to each other. The corner post panel 15, the upper cover plate 16, the corner post inner panel 17, and the lower cover plate 18 together form a cavity 100. The corner post panel 15, the upper cover plate 16, the inner partition 20, the plate air filter 30, and the lower cover plate 18 together form an air intake cavity 101. The upper cover plate 16, the corner post inner panel 17, the inner partition 20, the plate air filter 30, and the lower cover plate 18 together form an air outlet cavity 102.
[0037] The corner post panel 15 includes a first panel 151 and a second panel 152 that are perpendicular to each other. The corner post inner panel 17 includes a first inner panel 172 and a second inner panel 173 that are perpendicular to each other. The first panel 151, the second panel 152, the first inner panel 172 and the second inner panel 173 are connected in sequence along the circumference and together with the upper cover plate 16 and the lower cover plate 18, they form a cavity 100.
[0038] In the embodiments of this application, the height of the first panel 151 and the second panel 152 is higher than that of the first inner panel 172 and the second inner panel 173. A lower cover plate 18 is located in the lower middle part of the first panel 151 and the second panel 152, and the first inner panel 172 and the second inner panel 173 are fixed to the lower cover plate 18. An air filter cover plate 171 is provided on the corner column inner panel 17, and the plate air filter 30 is directly opposite the air filter cover plate 171. The air filter cover plate 171 can be opened to replace the plate air filter 30. Specifically, both the first inner panel 172 and the second inner panel 173 are provided with air filter covers plate 171.
[0039] See Figure 5As shown, the inner partition 20 includes a first partition 21, a second partition 22, and a third partition 23. The first partition 21, second partition 22, and third partition 23 are located in the upper middle part of the cavity 100. The first partition 21 is perpendicular to the first panel 151 and parallel to the second panel 152. The second partition 22 faces the guide plate 13 and is perpendicular to both the first partition 21 and the second panel 152. The third partition 23 is parallel to the upper cover plate 16 and the lower cover plate 18, and the first partition 21 and second partition 22 are located on and perpendicular to the third partition 23.
[0040] See Figure 6 As shown, the plate air filter 30 is mounted on the lower cover plate 18 and near the inner corner plate 17. The plate air filter 30 includes a first air filter 31 and a second air filter 32 that are perpendicular to each other. The first air filter 31 faces the air filter cover plate 171 on the first inner plate 172, and the air filter cover plate 171 on the first inner plate 172 can be opened to replace the first air filter 31. The second air filter 32 faces the air filter cover plate 171 on the second inner plate 173, and the air filter cover plate 171 on the second inner plate 173 can be opened to replace the second air filter 32. The air filter cover plate 171 can be opened, which facilitates maintenance and replacement and extends the service life of the equipment.
[0041] The air filter box also includes a seal 40 and a sound insulation component 50. The seal 40 is disposed between the air filter cover plate 171 and the inner corner plate 17. Specifically, the seal 40 is disposed between the air filter cover plate 171 and the first inner plate 172, and between the air filter cover plate 171 and the second inner plate 173. The seal 40 ensures the airtightness of the air filter box, preventing air leakage and noise leakage.
[0042] There are two sound insulation components 50, which are located on the side of the corner panel 15 facing the cavity 100. Specifically, the two sound insulation components 50 are respectively attached to the inner sidewalls of the first panel 151 and the second panel 152 to absorb noise and maximize noise attenuation.
[0043] This application also provides an air compressor, including a compressor main unit and an air filter box as described above. The air filter box is connected to the compressor main unit through an air outlet 12. Air enters the top of the intake chamber 101 from outside the air filter box in the direction of the arrow, passing through a herringbone-shaped guide plate 13, and is guided downwards. After reaching the bottom of the intake chamber 101, the air passes through the plate air filter 30 and enters the bottom of the outlet chamber 102, then moves upwards from the bottom of the outlet chamber 102, and finally enters the compressor main unit through the outlet guide ring 14.
[0044] The sound of the high-speed meshing rotors inside the compressor is transmitted in the opposite direction from the compressor to the outside of the air filter box. The sound from the compressor enters the top of the outlet chamber 102 through the outlet guide ring 14 at the top of the housing 10, and then travels in the opposite direction of the airflow to the bottom of the outlet chamber 102. After passing through the plate air filter 30, it reaches the bottom of the inlet chamber 101 and exits upwards from the bottom of the inlet chamber 101 through the air inlet 11 at the top of the housing 10. This increases the sound propagation path within the air filter box, allowing the sound to change direction by 180° within the chamber 100, effectively reducing the sound intensity transmitted to the air inlet 11.
[0045] The plate-type air filter 30 of this application combines filtration and chamber separation functions, simplifying the structure and saving space. The dual-chamber structure of the inlet chamber 101 and the outlet chamber 102 can extend the propagation path of gas and noise within the chamber 100, thereby reducing noise. At the same time, the integrated design of the air filter box can reduce component redundancy, reduce system pressure loss, and improve energy efficiency.
[0046] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.
Claims
1. An air filter box, characterized in that, include: The enclosure comprises a housing, an inner partition, and a plate air filter. The housing contains a cavity, and the inner partition and the plate air filter are disposed within the cavity. One side of the inner partition and the plate air filter forms an air inlet cavity, and the other side forms an air outlet cavity. The air inlet cavity and the air outlet cavity are connected through the plate air filter. The housing is provided with an air inlet communicating with the air inlet cavity and an air outlet communicating with the air outlet cavity.
2. The air filter box according to claim 1, characterized in that, The plate air filter is located in the lower middle part of the cavity, and the air inlet and the air outlet are located near the top of the housing. The air inlet and the air outlet are separated by the inner partition.
3. The air filter box according to claim 2, characterized in that, The air filter box also includes a guide plate, which is disposed inside the air inlet. The cross-section of the guide plate is "V" shaped to guide the gas from the external space of the air filter box to the upper part of the air inlet chamber and the lower middle part of the air inlet chamber in sequence.
4. The air filter box according to claim 3, characterized in that, The air filter box also includes an outlet guide ring, which is located inside the air outlet. The air outlet chamber is connected to the compressor unit through the outlet guide ring.
5. The air filter box according to claim 4, characterized in that, The gas flow path sequentially includes the guide plate, the upper part of the air inlet chamber, the middle and lower part of the air inlet chamber, the plate air filter, the bottom of the air outlet chamber, the top of the air outlet chamber, the outlet guide ring, and the compressor host.
6. The air filter box according to claim 1, characterized in that, The housing includes a corner column panel and a corner column inner panel arranged opposite each other, as well as an upper cover plate and a lower cover plate arranged opposite each other. The corner column panel, the upper cover plate, the corner column inner panel, and the lower cover plate together form the cavity; the corner column panel, the upper cover plate, the inner partition plate, the plate air filter, and the lower cover plate together form the air inlet cavity; the upper cover plate, the corner column inner panel, the inner partition plate, the plate air filter, and the lower cover plate together form the air outlet cavity.
7. The air filter box according to claim 6, characterized in that, The plate air filter is disposed on the lower cover plate and close to the inner plate of the corner post. The inner plate of the corner post is provided with an air filter cover plate, which can be opened to replace the plate air filter. A sealing element is provided between the air filter cover plate and the inner plate of the corner post.
8. The air filter box according to claim 7, characterized in that, The corner column inner plate includes a first inner plate and a second inner plate that are perpendicular to each other, and the air filter cover is provided on both the first inner plate and the second inner plate; the plate air filter includes a first air filter and a second air filter that are perpendicular to each other, the first air filter is directly opposite the air filter cover on the first inner plate, and the second air filter is directly opposite the air filter cover on the second inner plate.
9. The air filter box according to claim 6, characterized in that, The corner pillar panel includes a first panel and a second panel that are perpendicular to each other. Two sound insulation components are provided on the side of the corner pillar panel facing the cavity. The two sound insulation components are respectively attached to the inner sidewalls of the first panel and the second panel.
10. An air compressor, characterized in that, It includes a compressor unit and an air filter box as described in any one of claims 1-9, wherein the air filter box is connected to the compressor unit through the air outlet.