CN221432512U

CN221432512U - Air filter shell

Info

Publication number: CN221432512U
Application number: CN202323388254.9U
Authority: CN
Inventors: 李俊; 张鹏
Original assignee: Shanghai Inter Auto Parts Co ltd
Current assignee: Shanghai Inter Auto Parts Co ltd
Priority date: 2023-12-12
Filing date: 2023-12-12
Publication date: 2024-07-30
Anticipated expiration: 2033-12-12

Abstract

The application relates to an air filter shell, which belongs to the field of air cleaning equipment and comprises a shell, wherein an air outlet is formed in the center of one end of the shell, an inlet connecting pipe is fixedly connected to the side wall of the shell, a guide shell is coaxially and fixedly connected to the inside of the shell, a flow cavity is formed between the outer wall of the guide shell and the inner wall of the shell, gas entering the flow cavity from the inlet connecting pipe flows around the circumference of the guide shell, a guiding slope body is arranged on the inner wall of the shell, two ends of the guiding slope body are arranged in a staggered manner in the axial direction of the shell, the initial end of the guiding slope body is positioned on the end wall of the shell along the airflow direction, and the tail end of the guiding slope body is positioned at the joint of a conveying inlet connecting pipe and the shell. According to the application, the guiding slope body is adopted to guide the air flow rotating in the flow cavity along the axial direction of the shell cylinder, and as the slope end of the guiding slope body is the joint of the inlet connecting pipe and the shell cylinder, dead angle space with greatly reduced air flow intensity is not easy to generate in the flow cavity.

Description

Air filter shell

Technical Field

The present application relates to the field of air cleaning devices, and more particularly to an air filter housing.

Background

The air filter is air cleaning equipment, and particles, impurities and dust in the air are separated in a physical separation mode to obtain cleaner gas; the core filter element in the air filter is a filter cartridge, a filter screen or a filter bag.

The invention patent with publication number CN103775260B discloses a filter, which comprises an air filter and a filter shell, wherein the filter is cylindrical, an inlet pipe joint is arranged on the side wall of the filter, an outlet pipe joint is arranged at the center of the end wall of the filter, a tubular guide wall is coaxially arranged in the filter, a flow cavity for circulating gas is formed between the shell and the guide wall, and an inner space surrounded by the guide wall is used for accommodating a filter element. The axis of the inlet pipe joint is perpendicular to the axis of the shell; the inlet pipe joint is provided with a protrusion at one end facing the guide wall, the protrusion and the guide wall are connected in a unified way, the protrusion generates space blocking for the air flow and plays a role in redirecting and guiding the air flow, so that the air flow has a velocity component moving along the axial direction of the cylinder.

As can be seen from fig. 4 of the specification, the surface of the protrusion structure in the flow cavity comprises a flat surface, the flat surface is connected with the inner end wall of the housing, and the surfaces of the flat surface and the inner end wall form a right angle, the air flow in the flow cavity has a trend of flowing along the axial direction of the housing, when the air flow flowing around the circumference of the guide wall is vertically towards the protrusion, a part of air flow dead angle space is formed by the angle between the flat surface of the protrusion and the inner end wall of the housing, the air flow intensity in the dead angle space is lower, and dust particles in the air are easy to remain.

Disclosure of utility model

In order to improve the above problems, the present application provides an air filter housing.

The application provides an air filter shell which adopts the following technical scheme:

The utility model provides an air cleaner casing, includes a shell section of thick bamboo, the air outlet has been seted up at the one end center of shell section of thick bamboo, fixedly connected with entry takeover on the lateral wall of shell section of thick bamboo, coaxial fixedly connected with draft tube in the shell section of thick bamboo, form the flow chamber between draft tube outer wall and the shell section of thick bamboo inner wall, the gas that gets into the flow chamber from the entry takeover flows around the circumference of draft tube, be equipped with the guide slope body on the shell section of thick bamboo inner wall, the both ends of guide slope body dislocation in the axial of shell section of thick bamboo, along the air current direction, the top of guide slope body is located the end wall of shell section of thick bamboo, and the end is located the junction of carrying entry takeover and shell section of thick bamboo.

By adopting the technical scheme, the slope surface of the guiding slope body guides the air flow rotating in the flow cavity along the axial direction of the shell cylinder, and as the slope surface end of the guiding slope body is the joint of the inlet connecting pipe and the shell cylinder, dead angle space with greatly reduced air flow intensity is not easy to generate in the flow cavity.

Preferably, the guiding slope body is integrally formed on the inner side wall of the shell barrel, and a separation gap is formed between one side of the guiding slope body facing the guide barrel and the guide barrel.

Through adopting above-mentioned technical scheme, the separation clearance is closer to the axle center of flow chamber relative guide slope body, and the less granule impurity of centrifugal force easily gets into the separation clearance, and the great granule impurity of centrifugal force easily receives the domatic guide effect of guide slope body and changes the diversion, realizes the preliminary separation to granule impurity from this.

Preferably, the width of the separation gap is gradually narrowed in a direction along which the gas moves circumferentially around the guide cylinder.

Through adopting above-mentioned technical scheme, under the stable circumstances of flow, the space is the smaller, and the velocity of flow is the faster, and after the separation clearance narrowed gradually, the air current velocity that therefrom flows is accelerated, and the granule impurity speed that contains in the gas also improves to make the separation clearance be difficult for taking place the residual or the jam of impurity.

Preferably, the width of the separation gap is greater than one third of the width of the flow chamber and less than one half of the width of the flow chamber.

Preferably, the slope surface of the guiding slope body is an arc surface, and the slope surface of the guiding slope body gradually becomes larger along the direction that the gas moves around the circumference of the guide cylinder.

By adopting the technical scheme, the more obvious the change of the slope is, the larger the impact force generated by the gas and the particulate matters in the gas on the slope surface of the guiding slope body is, and the change of the slope is uniformly distributed on all the slope surfaces of the guiding slope body because the slope surface of the guiding slope body is a cambered surface, so that the condition that the local structure is easy to damage due to the abrupt change of the slope is improved.

Preferably, in a projection along the axial direction of the inlet nipple, the slope of the guiding ramp body is tangential to the contour of the inlet nipple.

By adopting the technical scheme, the particle impurities which are turned by the slope surface of the guided slope body in a abutting way leave the guided slope body and then flow through the inlet connecting pipe, and the direct action of the airflow from the inlet connecting pipe can be hardly received.

Preferably, be provided with a plurality of buckles on the pore wall of air-out hole, the buckle includes connecting block, cantilever piece and joint piece, connecting block, cantilever piece and joint piece integrated into one piece in proper order, connecting block and the pore wall fixed connection of air-out hole, the cantilever piece is located one side of connecting block towards the air-out hole axis, the joint piece is located one side of cantilever piece towards the air-out hole axis and keeps away from the one end of connecting block, the buckle is used for supplying filter element and shell section of thick bamboo joint cooperation.

Through adopting above-mentioned technical scheme, the cantilever piece can take place elastic deformation with the junction of connecting block to make the joint piece change self in the ascending position of air-out aperture, be convenient for realize the assembly and the dismantlement of joint connection.

Preferably, a plurality of fixed shaft protruding blocks are fixedly connected to the hole wall of the air outlet hole, the fixed shaft protruding blocks and the buckles are alternately arranged, and in a natural state, the distance between one side of the fixed shaft protruding block, which faces the axis of the air outlet hole, and the distance between one side of the cantilever block, which faces the axis of the air outlet hole, and the distance between the cantilever block and the wall of the air outlet hole are equal.

Through adopting above-mentioned technical scheme, under filter element and the state of the matched with installation of apopore, the rigid axle lug of difficult deformation is in butt with filter element, improves filter element's assembled state stability.

In summary, the present application includes at least one of the following beneficial technical effects:

1. By arranging the guiding slope body, the slope surface of the guiding slope body guides the air flow rotating in the flow cavity along the axial direction of the shell cylinder, and as the slope surface end of the guiding slope body is the joint of the inlet connecting pipe and the shell cylinder, dead angle space with greatly reduced air flow intensity is not easy to generate in the flow cavity;

2. Through the setting of separation clearance, separation clearance is closer to the axle center of flow chamber relative guide slope body, and the less granule impurity of centrifugal force easily gets into separation clearance, and the great granule impurity of centrifugal force easily receives the guide effect of the slope of guide slope body and turns to, realizes the preliminary separation to granule impurity from this.

Drawings

Fig. 1 is a front view of the overall structure of a housing for an air filter in accordance with an embodiment of the present application.

Fig. 2 is a schematic cross-sectional view showing the internal structure of the casing in the embodiment of the present application.

FIG. 3 is a schematic view showing the external structure of the air outlet of the air filter housing according to the embodiment of the present application.

Reference numerals illustrate: 1. a shell barrel; 11. an air outlet hole; 12. a guide cylinder; 13. a flow chamber; 2. guiding the slope body; 21. a separation gap; 3. an inlet nipple; 4. a buckle; 41. a connecting block; 42. a cantilever block; 43. a clamping block; 5. and a fixed shaft lug.

Detailed Description

The application is described in further detail below with reference to fig. 1-3.

The embodiment of the application discloses an air filter shell, which is shown in figures 1 and 2, and comprises a shell barrel 1, wherein an air outlet hole 11 is formed in the center of one end of the shell barrel 1, and the other end of the shell barrel is used for being matched with a filter main body; the side wall of the shell barrel 1 is fixedly connected with an inlet connecting pipe 3, the shell barrel 1 is coaxially and fixedly connected with a guide barrel 12, and an annular flow cavity 13 is formed between the outer wall of the guide barrel 12 and the inner wall of the shell barrel 1; the flow chamber 13 is in direct communication with the interior of the inlet nipple 3 and a cylindrical space is formed in the guide cylinder 12 for the placement of a filter element, such as a filter cartridge or the like. The gas to be filtered enters the flow chamber 13 through the inlet nipple 3, then enters the filter body through the flow chamber 13, and finally flows through the filter element and is discharged from the air outlet 11. The shell 1, the guide cylinder 12 and the inlet connecting pipe 3 are plastic pieces which are mutually integrated.

As shown in fig. 1 and 2, the axis of the inlet nipple 3 and the axis of the casing 1 are perpendicular to each other in different plane straight lines, and in the projection along the axial direction of the inlet nipple 3, the inlet nipple 3 is located completely on the same side of the axis of the casing 1, that is, the gas entering the flow chamber 13 from the inlet nipple 3 has a tendency to flow rotationally around the circumference of the flow chamber 13. The inner wall of the shell barrel 1 is provided with a guiding slope body 2, and the guiding slope body 2 is used for guiding the airflow along the direction of the axial upward movement of the shell barrel 1.

As shown in fig. 1 and 2, the inlet connection pipe 3 is located near the end of the shell 1, the guiding slope body 2 is located beside the inlet connection pipe 3, the initial end of the guiding slope body 2 is located on the end wall of the shell 1 along the direction of the circumferential movement of the air flow around the flow cavity 13, and the tail end of the guiding slope body 2 is located at the joint of the conveying inlet connection pipe 3 and the shell 1, so that in the process of the movement of the air around the flow cavity 13, the slope surface of the guiding slope body 2 contacts and abuts the air flow, and the slope surface of the guiding slope surface generates a component force on the air flow along the line direction of the shell 1, so that the air has a trend of moving axially along the shell 1. The guiding slope body 2 is integrally formed with the inner end wall and the inner side wall of the shell barrel 1, and the guiding slope body 2 is of a corresponding concave structure when seen from the outside of the shell barrel 1. A separation gap 21 is formed between the side of the guiding ramp body 2 facing the guide cylinder 12 and the guide cylinder 12, i.e. the separation gap 21 is closer to the axial center of the flow chamber 13 than the guiding ramp body 2. In the direction of the circumferential movement of the gas around the guide cylinder 12, the width of the separation gap 21 becomes narrower gradually, small particle impurities with smaller mass and smaller centrifugal force are liable to enter the separation gap 21 according to the relationship of the magnitude of the centrifugal force, the radius of rotation and the mass of the object, and large particle impurities with larger mass and larger centrifugal force are liable to be redirected by the guiding action of the slope of the guiding slope body 2, thereby achieving the primary separation of the particle impurities. In the direction in which the gas moves circumferentially around the guide cylinder 12, the width of the separation gap 21 gradually narrows, and in the case of a stable flow rate, the smaller the space, the faster the flow velocity, and after the separation gap 21 gradually narrows, the velocity of the gas flow flowing therethrough increases, and the velocity of the particulate impurities contained in the gas also increases, so that the separation gap 21 is less likely to cause accumulation or clogging of the impurities. The width of the separation gap 21 ranges from: the narrowest point is greater than one third of the width of the flow chamber 13 and the widest point is less than one half of the width of the flow chamber 13.

As shown in fig. 1 and 3, the slope of the guiding slope body 2 is an arc surface, the slope of the guiding slope body 2 gradually increases along the direction that the gas moves circumferentially around the guide cylinder 12, the more obvious the slope changes, the greater the impact force generated by the gas and the particles in the gas on the slope of the guiding slope body 2, and the slope changes are uniformly distributed on all the slope surfaces of the guiding slope body 2 due to the arc surface of the guiding slope body 2, so that the situation that the local structure is easy to be damaged due to the abrupt change of the slope is improved. In the projection in the axial direction of the inlet nipple 3, the slope of the guiding ramp body 2 is tangential to the contour of the inlet nipple 3, i.e. large-particle impurities deflected by the slope of the guiding ramp body 2 can hardly be subjected to the direct action of the air flow from the inlet nipple 3 anymore.

As shown in fig. 2 and 3, the hole wall of the air outlet 11 is provided with a plurality of buckles 4 for the filter element to be matched with the shell 1 in a clamping manner, each buckle 4 comprises a connecting block 41, a cantilever block 42 and a clamping block 43 which are integrally formed in sequence, meanwhile, the connecting block 41 and the hole wall of the air outlet 11 are integrally formed, the cantilever block 42 is positioned at one side of the connecting block 41 facing the axis of the air outlet 11, the cantilever block 42 is a cuboid block, and the length direction of the cantilever block 42 is the axial direction of the shell 1. The clamping block 43 is located at one side of the cantilever block 42 facing the axis of the air outlet hole 11 and far away from one end of the connecting block 41, and the joint of the cantilever block 42 and the connecting block 41 can be elastically deformed, so that the position of the clamping block 43 in the radial direction of the air outlet hole 11 is changed, and the clamping connection is convenient to assemble and disassemble. The pore wall of the air outlet 11 is fixedly connected with a plurality of fixed shaft convex blocks 5, all fixed shaft convex blocks 5 and all buckles 4 are alternately arranged along the circumferential direction of the air outlet 11, in a natural state, the distance between one side of the fixed shaft convex blocks 5 facing the axis of the air outlet 11 and the pore wall of the air outlet 11 is equal to the distance between one side of the cantilever block 42 facing the axis of the air outlet 11 and the pore wall of the air outlet 11, namely, in the state that the filter element and the air outlet 11 are matched and installed, the fixed shaft convex blocks 5 which are not easy to deform are abutted against the filter element, and the stability of the assembly state of the filter element is improved.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. The utility model provides an air cleaner casing, includes shell section of thick bamboo (1), air outlet (11) have been seted up at the one end center of shell section of thick bamboo (1), fixedly connected with entry takeover (3) on the lateral wall of shell section of thick bamboo (1), coaxial fixedly connected with draft tube (12) in shell section of thick bamboo (1), form flow chamber (13) between draft tube (12) outer wall and shell section of thick bamboo (1) inner wall, its characterized in that: the gas entering the flow cavity (13) from the inlet connecting pipe (3) flows around the circumference of the guide cylinder (12), a guiding slope body (2) is arranged on the inner wall of the shell cylinder (1), two ends of the guiding slope body (2) are arranged in a staggered manner in the axial direction of the shell cylinder (1), along the air flow direction, the starting end of the guiding slope body (2) is positioned on the end wall of the shell cylinder (1), and the tail end of the guiding slope body is positioned at the joint of the conveying inlet connecting pipe (3) and the shell cylinder (1).

2. An air filter housing according to claim 1, wherein: the guide slope body (2) is integrally formed on the inner side wall of the shell cylinder (1), and a separation gap (21) is formed between one side, facing the guide cylinder (12), of the guide slope body (2) and the guide cylinder (12).

3. An air filter housing as claimed in claim 2, wherein: the width of the separation gap (21) gradually narrows in the direction of the gas moving circumferentially around the guide cylinder (12).

4. An air filter housing according to claim 3, wherein: the width of the separation gap (21) is greater than one third of the width of the flow chamber (13) and less than one half of the width of the flow chamber (13).

5. An air filter housing according to any one of claims 2-4, wherein: the slope surface of the guiding slope body (2) is an arc surface, and the slope surface of the guiding slope body (2) gradually becomes larger along the direction that the gas moves circumferentially around the guide cylinder (12).

6. An air filter housing according to any one of claims 2-4, wherein: in the axial projection of the inlet connection (3), the slope of the guiding ramp body (2) is tangential to the contour of the inlet connection (3).

7. An air filter housing according to any one of claims 1-4, wherein: be provided with a plurality of buckles (4) on the pore wall of apopore (11), buckle (4) are including connecting block (41), cantilever piece (42) and joint piece (43), connecting block (41), cantilever piece (42) and joint piece (43) integrated into one piece in proper order, connecting block (41) are with the pore wall fixed connection of apopore (11), cantilever piece (42) are located one side of connecting block (41) towards apopore (11) axis, joint piece (43) are located one side of cantilever piece (42) towards apopore (11) axis and keep away from the one end of connecting block (41), buckle (4) are used for supplying filter element and shell section of thick bamboo (1) joint cooperation.

8. An air filter housing as defined in claim 7, wherein: the utility model discloses a wind outlet hole, including air outlet hole (11), fixed connection has a plurality of dead axle lugs (5) on the pore wall of air outlet hole (11), dead axle lugs (5) are arranged in turn with buckle (4), under the natural state, the distance of dead axle lugs (5) towards one side of air outlet hole (11) axis relative air outlet hole (11) pore wall equals with cantilever piece (42) towards the distance of one side of air outlet hole (11) axis relative air outlet hole (11) pore wall.