A sealing structure for a chambered air filter
By setting a limiting structure between the upper and lower housings, the sealing and stability problems caused by the split-chamber structure of the air filter are solved, enabling stable assembly and normal operation in the space-constrained engine compartment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN PEACE FILTER CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-09
Smart Images
Figure CN224339090U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air filter technology, specifically to a sealed structure for a chambered air filter. Background Technology
[0002] Existing motor vehicle engine air filter housings consist of an upper housing and a lower housing, which are interconnected. A filter element is housed within the cavity formed by the two housings. Air enters the housing, is filtered by the filter element, and then sent to the engine. The air filter is located in the engine compartment. With technological advancements, the engine compartment requires the placement of more and more components, making the space increasingly compact. In some vehicle models, due to space constraints within the engine compartment, both the air filter's inlet and outlet must be located on the lower housing, as seen in the split-chamber air filter structure (publication number CN220909866U). Otherwise, it cannot be installed in the engine compartment. However, splitting the lower housing into chambers complicates and destabilizes the sealing structure of the filter element between the upper and lower housings. Utility Model Content
[0003] To address the problems in the existing technology, this utility model provides a sealing structure for a chambered air filter, aiming to improve the stability and sealing of the filter element within the housing.
[0004] A sealed structure for a cavity air filter includes an upper shell and a lower shell joined together. A filter element, a first sealing ring, and a second sealing ring are disposed within the cavity formed by the two shells. An air inlet groove and an air outlet groove are arranged side-by-side within the lower shell. The first and second sealing rings are respectively positioned around the openings of the air inlet groove and the air outlet groove. The filter element is located within the opening of the air inlet groove. The top edge of the filter element is fixedly connected to the inner edge of the lower side of the first sealing ring, and the two are sealed together. The outer edge of the lower side of the first sealing ring overlaps the top surface of the upper shell. A limiting structure is provided between the upper and lower shells for compressing the inner, outer, upper, and lower sides of the first and second sealing rings. The limiting structure has at least two annular surfaces that respectively abut and seal with the two sides of the first sealing ring, and at least two C-shaped surfaces that abut and seal with the two sides of the second sealing ring. All C-shaped surfaces are arranged around the outer wall of the lower shell.
[0005] Furthermore, the second sealing ring is integrated onto the first sealing ring, with one side of the first sealing ring serving as its own side.
[0006] Furthermore, both the inlet and outlet grooves of the air intake groove are square, and they are close to each other and separated by a partition integrated inside the lower housing.
[0007] Furthermore, the longitudinal section of the second sealing ring is a cone shape with a smaller top and a larger bottom. The upper side of the second sealing ring is an outwardly convex arc surface, while the lower side, inner side, and outer side are all flat surfaces.
[0008] Further, a first annular baffle and a second annular baffle are integrally provided on the upper end face of the lower shell. The first annular baffle is arranged around the outer wall of the lower shell, and the second annular baffle is arranged around the opening of the air outlet groove. The lower end face of the outer wall of the upper shell is arranged around the first annular baffle. A strip-shaped pressure plate is integrally provided in the middle of the upper shell at the position corresponding to the partition. A third annular baffle is integrally provided in the upper shell. The third annular baffle is arranged sequentially around the strip-shaped pressure plate and the inner wall of the upper shell. The lower end face of the upper shell, the upper end face of the lower shell, the first annular baffle, the second annular baffle, and the third annular baffle form the limiting structure.
[0009] Furthermore, the annular surface and the C-shaped surface are located on the lower end face of the corresponding upper shell and the upper end face of the corresponding lower shell.
[0010] Furthermore, the annular surface and the C-shaped surface are located on the lower end face of the corresponding upper shell, the upper end face of the lower shell, the first annular baffle, the second annular baffle, and the third annular baffle.
[0011] Furthermore, several connecting plates are fixedly connected between the strip pressure plate and the top wall of the upper shell, with ventilation gaps left between adjacent connecting plates.
[0012] Furthermore, an annular skirt extending downward is integrally provided in the middle of the lower side of the first sealing ring, and the annular skirt is attached to and fixedly connected to the side of the filter element.
[0013] Furthermore, both the first and second sealing rings are made of polyurethane.
[0014] The beneficial effects of this utility model are as follows: A limiting structure is set between the upper shell and the lower shell, thereby squeezing and sealing the inner side, outer side, upper side and lower side of the first sealing ring and the second sealing ring, thereby ensuring the stability of the filter element in the air inlet groove, as well as the sealing performance of the first sealing ring and the second sealing ring between the upper shell and the lower shell. Attached Figure Description
[0015] Figure 1 This is a diagram of the external shape of a chambered air filter;
[0016] Figure 2 This is a schematic diagram of the lower shell structure;
[0017] Figure 3 This is a schematic diagram of the upper shell structure;
[0018] Figure 4 This is a schematic diagram of the connection structure of the filter element, the first sealing ring, and the second sealing ring.
[0019] Figure 5 This is a schematic cross-sectional view of a chambered air filter.
[0020] Figure 6 for Figure 5 Enlarged view of the structure of region A in the middle. Detailed Implementation
[0021] The present invention will now be described in detail with reference to the accompanying drawings. Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. The directional terms such as left, center, right, top, and bottom in the embodiments of the present invention are only relative concepts or referenced to the normal use state of the product, and should not be considered restrictive.
[0022] First embodiment:
[0023] A sealed structure for a chambered air filter, such as Figure 1 and Figure 5 As shown, the device includes an upper housing 1 and a lower housing 2 that are joined together. A filter element 3, a first sealing ring 31, and a second sealing ring 32 are disposed within the cavity formed by the two housings. Figure 2 As shown, an air inlet groove 23 and an air outlet groove 25 are arranged side by side inside the lower housing 2. An air inlet 21 and an air outlet 22, respectively connected to the air inlet groove 23 and the air outlet groove 25, are provided on the side wall of the lower housing 2. A first sealing ring 31 and a second sealing ring 32 are respectively arranged around the opening of the air inlet groove 23 and the opening of the air outlet groove 25. The filter element 3 is located inside the opening of the air inlet groove 23, combined with… Figure 6 As shown, the top edge of the filter element 3 is fixedly connected to the inner edge of the lower side of the first sealing ring 31, and the two are sealed together. To improve the connection strength between the lower side of the first sealing ring 31 and the filter element 3, an annular skirt 33 extending downward is integrally provided in the middle of the lower side of the first sealing ring 31. The annular skirt 33 is attached to and fixedly connected to the side of the filter element 3. The outer edge of the lower side of the first sealing ring 31 overlaps the top surface of the upper housing 1. A limiting structure is provided between the upper housing 1 and the lower housing 2 for pressing the inner, outer, upper, and lower sides of the first sealing ring 31 and the second sealing ring 32. The limiting structure has at least two annular surfaces that are attached to and sealed to the two sides of the first sealing ring 31, and at least two C-shaped surfaces that are attached to and sealed to the two sides of the second sealing ring 32. The C-shaped surfaces are all arranged around the outer wall of the lower housing 2.
[0024] In this context, both the first sealing ring 31 and the second sealing ring 32 are made of polyurethane (PU), such as... Figure 4As shown, the second sealing ring 32 is integrally set on the first sealing ring 31 and uses one side of the first sealing ring 31 as its own side. The longitudinal section of the second sealing ring 32 is a cone shape with a smaller top and a larger bottom. The upper side of the second sealing ring 32 is an outwardly convex arc surface, while the lower side, inner side, and outer side are all flat. The slots of the air inlet groove 23 and the air outlet groove 25 are both square, and they are close to each other and separated by a partition 27 integrally set inside the lower housing 2. The filter element 3 is adapted to the shape of the air inlet groove 23, that is, the filter element 3 is cuboid.
[0025] A first annular baffle 24 and a second annular baffle 26 are integrally provided on the upper end face of the lower housing 2. The first annular baffle 24 is arranged around the outer wall of the lower housing 2, and the second annular baffle 26 is arranged around the opening of the air outlet groove 25; combined with Figure 3 and Figure 5 As shown, the lower end face of the outer wall of the upper shell 1 is arranged around the first annular baffle 24. A strip-shaped pressure plate 11 is integrally formed in the middle of the upper shell 1, corresponding to the position of the partition 27. Several connecting plates 12 are fixedly connected between the strip-shaped pressure plate 11 and the top wall of the upper shell 1, with ventilation gaps between adjacent connecting plates 12. A third annular baffle 13 is integrally formed inside the upper shell 1, and the third annular baffle 13 is sequentially arranged around the strip-shaped pressure plate 11 and the inner wall of the upper shell 1. The lower end face of the upper shell 1, the upper end face of the lower shell 2, and... The first annular baffle 24, the second annular baffle 26, and the third annular baffle 13 form the limiting structure; the annular surface and the C-shaped surface are located on the lower end surface of the corresponding upper shell 1 and the upper end surface of the lower shell 2, that is, the first annular baffle 24, the second annular baffle 26, and the third annular baffle 13 only squeeze and limit the corresponding edges on the first sealing ring 31 and the second sealing ring 32, and the lower end surface of the upper shell 1 and the upper end surface of the lower shell 2 adhere and seal the corresponding edges on the first sealing ring 31 and the second sealing ring 32.
[0026] When the chamber air filter is working, air enters the intake groove 23 of the lower housing 2 through the intake port 21, and then is filtered by the filter element 3 to obtain clean air. The clean air enters the exhaust groove 25 through the gap between the connecting plates 12 in the upper housing 1, and is then sent to the engine through the exhaust port 22.
[0027] Second embodiment:
[0028] Other technical features are the same as in the first embodiment, with the annular surface and C-shaped surface located on the lower end face of the corresponding upper shell 1, the upper end face of the lower shell 2, the first annular baffle 24, the second annular baffle 26, and the third annular baffle 13. That is, the first annular baffle 24, the second annular baffle 26, the third annular baffle 13, the lower end face of the upper shell 1, and the upper end face of the lower shell 2 not only squeeze and limit the corresponding edges on the first sealing ring 31 and the second sealing ring 32, but also adhere and seal the corresponding edges on the first sealing ring 31 and the second sealing ring 32.
[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A sealed structure for a cavity air filter, comprising an upper shell and a lower shell joined together, wherein a filter element, a first sealing ring, and a second sealing ring are disposed within the cavity formed by the two shells; an air inlet groove and an air outlet groove are arranged side by side within the lower shell; the first sealing ring and the second sealing ring are respectively arranged around the openings of the air inlet groove and the air outlet groove; the filter element is located within the opening of the air inlet groove, characterized in that: The top edge of the filter element is fixedly connected to the inner edge of the lower side of the first sealing ring and the two are sealed together. The outer edge of the lower side of the first sealing ring overlaps the top surface of the upper housing. A limiting structure is provided between the upper housing and the lower housing for pressing the inner, outer, upper, and lower sides of the first and second sealing rings. The limiting structure has at least two annular surfaces that are respectively attached to and sealed with the two sides of the first sealing ring. The limiting structure also has at least two C-shaped surfaces that are attached to and sealed with the two sides of the second sealing ring. The C-shaped surfaces are all arranged around the outer wall of the lower housing.
2. The sealing structure of the chambered air filter according to claim 1, characterized in that: The second sealing ring is integrated onto the first sealing ring, with one side of the first sealing ring serving as its own side.
3. The sealing structure of the chambered air filter according to claim 2, characterized in that: Both the inlet and outlet grooves are square, close to each other and separated by an integrated partition inside the lower housing.
4. The sealing structure of the chambered air filter according to claim 2, characterized in that: The longitudinal section of the second sealing ring is a cone shape with a smaller top and a larger bottom. The upper side of the second sealing ring is a convex arc surface, while the lower side, inner side, and outer side are all flat.
5. The sealing structure of the chambered air filter according to claim 1, characterized in that: A first annular baffle and a second annular baffle are integrally provided on the upper end face of the lower shell. The first annular baffle is arranged around the outer wall of the lower shell, and the second annular baffle is arranged around the opening of the air outlet groove. The lower end face of the outer wall of the upper shell is arranged around the first annular baffle. A strip-shaped pressure plate is integrally provided in the middle of the upper shell at the position corresponding to the partition. A third annular baffle is integrally provided in the upper shell. The third annular baffle is arranged sequentially around the strip-shaped pressure plate and the inner wall of the upper shell. The lower end face of the upper shell, the upper end face of the lower shell, the first annular baffle, the second annular baffle, and the third annular baffle form the limiting structure.
6. The sealing structure of the chambered air filter according to claim 5, characterized in that: The annular surface and the C-shaped surface are located on the lower end face of the corresponding upper shell and the upper end face of the corresponding lower shell.
7. The sealing structure of the chambered air filter according to claim 5, characterized in that: The annular surface and the C-shaped surface are located on the lower end face of the corresponding upper shell, the upper end face of the lower shell, the first annular baffle, the second annular baffle, and the third annular baffle.
8. The sealing structure of the chambered air filter according to claim 5, characterized in that: Several connecting plates are fixedly connected between the strip pressure plate and the top wall of the upper shell, and ventilation gaps are left between adjacent connecting plates.
9. The sealing structure of the chambered air filter according to claim 1, characterized in that: An annular skirt extending downward is integrally provided in the middle of the lower side of the first sealing ring. The annular skirt is attached to and fixedly connected to the side of the filter element.
10. The sealing structure of the chambered air filter according to claim 1, characterized in that: Both the first and second sealing rings are made of polyurethane.