Pipeline structure of air filter with negative pressure recovery function

Abstract

The utility model relates to the technical field of automobile accessory air filters, in particular to a pipeline structure of an air filter with negative pressure recovery, which is characterized by comprising an air filter, the air filter comprises a lower shell, a filter element and an upper shell, an air inlet pipe and an air outlet pipe are arranged on the lower shell, a filter cavity and an air outlet cavity are formed on the lower shell, the air inlet pipe is communicated with the filter cavity, and the air outlet pipe is communicated with the air outlet cavity. The air outlet pipe is communicated with the air outlet cavity, the filter element is installed in the filter cavity, the upper shell is fixed to the lower shell, the air outlet pipe is of a bent structure, and the air outlet pipe is provided with a large-caliber branch pipe opening, a medium-caliber branch pipe opening and a small-caliber branch pipe opening. The included angle formed by the large-caliber branch pipe opening, the medium-caliber branch pipe opening and the small-caliber branch pipe opening in the air flow direction of the air outlet pipeline is smaller than or equal to 90 degrees. Negative pressure is formed on a branch through airflow on the exhaust pipe, so that pipeline engine oil air on other paths is sucked for cyclic utilization, and the beneficial effects of energy conservation and environmental protection are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of air filter of automobile accessory, specifically relates to a kind of pipeline structure of air filter with negative pressure recovery. BACKGROUND

[0002] Automobile air filter (air cleaner) is the core component of engine intake system, can filter air impurities, improve engine performance and fuel economy.

[0003] The prior art patent number: 201310605560.5 of China discloses a kind of arrangement method and structure of air filter intake pipeline for improving engine power, air filter intake pipeline includes air inlet pipe, decoupling bellows and air inlet assembly, air inlet assembly includes top-mounted wind deflector and air inlet elbow, top-mounted wind deflector is opened with air inlet, air inlet elbow is connected with air inlet from top-mounted wind deflector, top-mounted wind deflector is arranged at the top of condenser and is close to the front of vehicle, so that air inlet is located and is located at the top surface of air intake cabin formed by condenser, front bumper, top-mounted wind deflector and side wind deflector, directly inhale low-temperature air.

[0004] Therefore, on the air filter outlet pipeline, only filtered air is provided to the engine, and the engine box contains mechanical moving parts, which work in some lubricating oil environment, when the filtered air enters the engine box, some oil air is discharged outward through the exhaust port, which easily causes the engine box to reduce oil and heat. The volatility of oil reduces the mobility of the internal structure of the engine. The oil air discharged to the outside pollutes the environment.

[0005] Therefore, from the two aspects, the structure needs to be improved, and a reasonable pipeline structure needs to be designed. UTILITY MODEL CONTENT

[0006] In order to solve the technical problems and shortcomings in the prior art, the present application provides an air filter pipeline structure with negative pressure recovery, which can overcome the technical problems of pollution discharge of oil air in the engine box and energy recycling.

[0007] To achieve the above object and other related purposes, the utility model adopts the following technical scheme:

[0008] The pipeline structure of the air filter with negative pressure recovery comprises an air filter, the air filter comprises a lower shell, a filter core and an upper shell, an air inlet pipe and an air outlet pipe are arranged on the lower shell, a filtering cavity and an air outlet cavity are formed on the lower shell, the air inlet pipe is connected with the filtering cavity, the air outlet pipe is connected with the air outlet cavity, the filter core is installed in the filtering cavity, the upper shell is fixed on the lower shell, the air outlet pipe is arranged in a curved structure, a large-diameter branch pipe opening, a medium-diameter branch pipe opening and a small-diameter branch pipe opening are arranged on the air outlet pipe, and the included angle formed by the large-diameter branch pipe opening, the medium-diameter branch pipe opening and the small-diameter branch pipe opening in the airflow direction on the air outlet pipeline is less than or equal to 90 degrees.

[0009] Preferably, the large-diameter branch pipe opening and the small-diameter branch pipe opening are parallel.

[0010] Preferably, the large-diameter branch pipe opening is connected with a crankcase elbow pipe, and the small-diameter branch pipe opening is used for connecting a rubber pipe, and the other end of the rubber pipe is used for connecting an engine case.

[0011] Preferably, the medium-diameter branch pipe opening is used for connecting a supercharger.

[0012] Preferably, a joint is assembled on the medium-diameter branch pipe opening and the small-diameter branch pipe opening, and the joint and the medium-diameter branch pipe opening and the small-diameter branch pipe opening are detachably and sealingly matched.

[0013] Preferably, the joint comprises a main pipe body and a plurality of flexible ring bodies, the main pipe body and the ring bodies are integrally connected, and the plurality of flexible ring bodies are distributed along the length direction of the main pipe body at equal intervals.

[0014] Compared with the prior art, the air filter with negative pressure recovery has the following beneficial effects:

[0015] 1. The large-diameter branch pipe opening, the medium-diameter branch pipe opening and the small-diameter branch pipe opening are arranged on the air outlet pipe of the air filter, the included angle formed by the large-diameter branch pipe opening, the medium-diameter branch pipe opening and the small-diameter branch pipe opening in the airflow direction on the air outlet pipeline is less than or equal to 90 degrees, so that the hot air containing engine oil in the engine case and the crankcase of the automobile can be recovered to the exhaust pipe for recycling, and because the included angle is small, when the air outlet pipe has airflow passing through, the flow rate is increased and the air pressure is reduced, so that negative pressure can be formed at the large-diameter branch pipe opening, the medium-diameter branch pipe opening and the small-diameter branch pipe opening, the negative pressure is used to absorb the air containing engine oil for recycling, and the negative pressure generated can also absorb the airflow with temperature, so that energy is saved.

[0016] 2. In the air filter with negative pressure recovery, the large-diameter branch pipe opening and the small-diameter branch pipe opening are parallel, which is beneficial to synchronously generating negative pressure, and if the large-diameter branch pipe opening has airflow discharging, the small-diameter branch pipe opening can also generate negative pressure.

[0017] 3. Through the design of the joint, the connection of the hose can be facilitated, meanwhile the ring body on the joint can realize the sealing effect of assembly, and meanwhile the length of the joint extending in can be adjusted according to requirements.

[0018] Additional advantages and benefits of the present application will be apparent from the following description, some of which will be apparent from the following description, some of which will be apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and are used to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0020] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;

[0021] Figure 2 is an exploded view of the structure of the embodiment of the present application;

[0022] Figure 3 is another embodiment of the structure of the joint of the embodiment of the present application.

[0023] Explanation of the reference numerals of the main components:

[0024] 1. air filter; 11. lower housing; 12. filter element; 13. upper housing; 14. filter cavity; 15. air outlet cavity; 2. air inlet pipe; 3. air outlet pipe; 31. large-diameter branch pipe port; 32. medium-diameter branch pipe port; 33. small-diameter branch pipe port; 4. rubber hose; 5. joint; 51. main pipe body; 52. ring body. DETAILED DESCRIPTION

[0025] The specific embodiments of the present application will be further described below with reference to the accompanying drawings. The following embodiments and features of the embodiments can be combined with each other without conflict, as understood by those skilled in the art from the disclosure, and the advantages and effects of the present application can be easily understood by those skilled in the art from the disclosure. The present application can also be implemented or applied in different specific embodiments, and the details in the specification can be modified or changed based on different views and applications without departing from the spirit of the present application. It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner, and the drawings only show the components related to the present application, not the number, shape and size of the components when actually implemented. The actual implementation of each component can be changed arbitrarily in terms of shape, number and proportion, and the layout pattern of the components can also be more complex.

[0026] It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner, and the drawings only show the components related to the present application, not the number, shape and size of the components when actually implemented. The actual implementation of each component can be changed arbitrarily in terms of shape, number and proportion, and the layout pattern of the components can also be more complex.

[0027] It should be noted that in the description of the present application, the terms indicating the direction or positional relationship of "upper", "lower", "left", "right", "inner", "outer" and the like are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present invention. In addition, it should be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present invention can be understood according to the specific circumstances. Embodiment

[0028] The embodiment of the present application discloses a pipeline structure of an air filter with negative pressure recovery, referring to Figure 1 , Figure 2 The air filter 1 includes a lower shell 11, a filter element 12, and an upper shell 13. The lower shell 11 is provided with an air inlet pipe 2 and an air outlet pipe 3. The lower shell 11 is formed with a filter cavity 14 and an air outlet cavity 15, the air inlet pipe 2 is connected through the filter cavity 14, the air outlet pipe 3 is connected to the air outlet cavity 15 in communication, and the filter element 12 is installed in the filter cavity 14. The upper shell 13 is fixed on the lower shell 11. The air outlet pipe 3 is arranged in a curved structure, and the air outlet pipe 3 is provided with a large-diameter branch pipe opening 31, a medium-diameter branch pipe opening 32, and a small-diameter branch pipe opening 33. The included angle formed by the large-diameter branch pipe opening 31, the medium-diameter branch pipe opening 32, and the small-diameter branch pipe opening 33 in the airflow direction of the air outlet pipe 3 is less than or equal to 90 degrees. In the present scheme, 90 degrees is preferably selected.

[0029] During use, by arranging the large-diameter branch pipe opening 31, the medium-diameter branch pipe opening 32, and the small-diameter branch pipe opening 33 at the position of the air outlet pipe 3 of the air filter 1, different sizes of the branch pipe openings are suitable for different flow rates or flow velocities at the branch pipe openings; the included angle formed by the large-diameter branch pipe opening 31, the medium-diameter branch pipe opening 32, and the small-diameter branch pipe opening 33 in the airflow direction of the air outlet pipe 3 is less than or equal to 90 degrees, so that the hot air containing engine oil on the engine case, crankcase and the like of the automobile can be recovered to the exhaust pipe for recycling. The principle is: because the included angle is small, when the air flow passes through the air outlet pipe 3, the flow velocity increases and the air pressure decreases, so that a negative pressure can be formed at the large-diameter branch pipe opening 31, the medium-diameter branch pipe opening 32, and the small-diameter branch pipe opening 33, and the negative pressure is used to absorb the air containing engine oil flowing back for recycling. The negative pressure generated thereby can also absorb the airflow with temperature, thereby saving energy.

[0030] Further optimization, in order to adapt to different use environment, large diameter branch pipe mouth 31 and small caliber branch pipe mouth 33 parallel. In the utility model, large diameter branch pipe mouth 31 and small caliber branch pipe mouth 33 parallel, it is favorable to synchronous generation negative pressure;If large diameter branch pipe mouth 31 has airflow discharge, then it can also affect small caliber branch pipe mouth 33 to generate negative pressure.

[0031] Large diameter branch pipe mouth 31 connects crankcase elbow pipe, small caliber branch pipe mouth 33 is used to connect rubber tube 4, and the other end of rubber tube 4 is used to connect engine case. Rubber tube 4 is relatively soft, and can be bent relatively randomly. Medium caliber branch pipe mouth 32 is used to connect supercharger.

[0032] In order to facilitate later maintenance and maintenance, medium caliber branch pipe mouth 32, small caliber branch pipe mouth 33 are equipped with joint 5, and joint 5 and medium caliber branch pipe mouth 32, small caliber branch pipe mouth 33 can be detachably sealed. Such disassembly and assembly are convenient, and maintenance efficiency is improved. Embodiment

[0033] Based on embodiment one, further, joint 5 can be further optimized and designed, referring to Figure 3 As shown in the drawing, joint 5 includes main pipe body 51 and a plurality of flexible ring body 52, and main pipe body 51 and ring body 52 are integrally connected, and a plurality of flexible ring body 52 are distributed along the length direction of main pipe body 51. Through the design of joint 5, the connection of hose can be facilitated, and the ring body 52 on joint 5 can realize the sealing effect of assembly, and the length of joint 5 can be adjusted according to the requirement.

[0034] Thus, the technical scheme of the present application has been described in combination with the preferred embodiments shown in the drawings, and the above description is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pipeline structure for an air filter with negative pressure recovery, comprising an air filter (1), the air filter (1) comprising a lower housing (11), a filter element (12), and an upper housing (13), wherein the lower housing (11) is provided with an inlet pipe (2) and an outlet pipe (3), and a filter chamber (14) and an outlet chamber (15) are formed on the lower housing (11), the inlet pipe (2) is connected to the filter chamber (14), the outlet pipe (3) is connected to the outlet chamber (15), the filter element (12) is installed in the filter chamber (14), and the upper housing (13) is fixed on the lower housing (11), characterized in that, The exhaust pipe (3) is configured with a curved structure. The exhaust pipe (3) is provided with a large-diameter branch pipe (31), a medium-diameter branch pipe (32), and a small-diameter branch pipe (33). The angle formed by the large-diameter branch pipe (31), the medium-diameter branch pipe (32), and the small-diameter branch pipe (33) on the airflow direction of the exhaust pipe (3) is less than or equal to 90 degrees.

2. The piping structure of the air filter with negative pressure recovery according to claim 1, characterized in that, The large-diameter branch pipe (31) and the small-diameter branch pipe (33) are parallel.

3. The piping structure of the air filter with negative pressure recovery according to claim 1, characterized in that, The large-diameter branch pipe (31) is connected to the crankcase bend, and the small-diameter branch pipe (33) is used to connect the rubber hose (4). The other end of the rubber hose (4) is used to connect to the engine housing.

4. The piping structure of the air filter with negative pressure recovery according to claim 1, characterized in that, The medium-diameter branch pipe (32) is used to connect to the booster.

5. The piping structure of the air filter with negative pressure recovery according to claim 1, characterized in that, The medium-diameter branch pipe port (32) and the small-diameter branch pipe port (33) are equipped with connectors (5), and the connectors (5) and the medium-diameter branch pipe port (32) and the small-diameter branch pipe port (33) are detachably sealed together.

6. The piping structure of the air filter with negative pressure recovery according to claim 5, characterized in that, The connector (5) includes a main body (51) and a plurality of flexible rings (52), the main body (51) and the rings (52) are integrally connected, and the plurality of flexible rings (52) are distributed at equal intervals along the length direction of the main body (51).

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