CN218563731U

CN218563731U - Oil mist separator adopting Venturi tube to accelerate airflow

Info

Publication number: CN218563731U
Application number: CN202223122500.1U
Authority: CN
Inventors: 马宇雷
Original assignee: Mecaplast Auto Parts Shanghai Co ltd
Current assignee: Mecaplast Auto Parts Shanghai Co ltd
Priority date: 2022-11-24
Filing date: 2022-11-24
Publication date: 2023-03-03
Anticipated expiration: 2032-11-24

Abstract

The utility model discloses an oil mist separator adopting a Venturi tube to accelerate airflow, wherein a multiple variable cross-section oil mist separation collision component is arranged at one end of an oil mist separation cavity; the other end of the oil mist separation cavity is provided with a Venturi airflow accelerating pipe, and an air outlet of the Venturi airflow accelerating pipe points to a working surface of the multiple variable cross-section oil mist separation collision component for bearing oil mist collision; a reducer pipe with the inner diameter gradually reduced is arranged between the multiple variable cross-section oil mist separation collision component and the Venturi airflow accelerating pipe; the end with the larger inner diameter of the reducer pipe faces the Venturi airflow accelerating pipe, and the end with the smaller inner diameter of the reducer pipe faces the multiple variable cross-section oil mist separation collision component; the side surface of the reducer pipe is introduced into blow-by gas of an automobile engine through a pipeline; the air inlet of the venturi airflow accelerating tube introduces air from an air inlet manifold of an automobile engine through an air extracting tube. The utility model discloses can drip to the tiny particle and carry out high-efficient separation to and low pressure loss, have better cost advantage, can satisfy higher emission requirement.

Description

Oil mist separator adopting Venturi tube to accelerate airflow

Technical Field

The utility model relates to a fuel automobile engine's scurries gas oil mist separation technical field, in particular to oil mist separator who adopts venturi to accelerate air current.

Background

In the prior art, an automobile oil mist separator mainly aims at oil drop separation with the particle diameter larger than 1 micron, and the specific working principle is as follows:

as shown in fig. 1, blowby gas of an automobile engine directly enters an oil mist separator from a crankcase through a blowby gas inlet in a lower housing of a camshaft cover, and then is subjected to collision with a multiple-variable-section oil mist separation collision member to achieve oil mist separation.

Because the flow of blow-by gas from an automobile engine is generally below 60L/min, when the blow-by gas collides with the multiple variable cross-section oil mist separation collision component to realize oil mist separation, the oil droplet separation efficiency is greatly reduced after the diameter of oil droplets is less than 1 micron.

However, with the increasing environmental awareness of the public and the increasing environmental requirements of fuel engines, the prior art is gradually unable to meet the social demands.

Therefore, how to solve the problem that the oil mist separation efficiency is too low when the diameter of oil drops is less than 1 micron, and the relative energy consumption for oil mist separation is too large becomes a technical problem to be solved urgently by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defect of prior art, the utility model provides an adopt venturi to accelerate oil mist separator of air current, the purpose of realization is that the separation efficiency who solves oil droplet diameter and be less than 1 micron oil mist is low excessively, the too big defect of relative oil mist separation energy consumption.

In order to achieve the above object, the utility model discloses an adopt venturi to accelerate oil mist separator of air current, including multiple variable cross section oil mist separation collision part, and set up the oil mist separation chamber of multiple variable cross section oil mist separation collision part.

The multiple variable-section oil mist separation collision component is arranged at one end of the oil mist separation cavity;

a Venturi airflow accelerating pipe is arranged at the other end of the oil mist separation cavity, and an air outlet of the Venturi airflow accelerating pipe points to a working surface of the multiple variable cross-section oil mist separation collision component and is used for bearing oil mist impact;

a reducer pipe with the gradually reduced inner diameter is arranged between the multiple variable cross-section oil mist separation collision part and the venturi airflow accelerating pipe;

the end with the larger inner diameter of the reducer pipe faces the Venturi airflow accelerating pipe, and the end with the smaller inner diameter of the reducer pipe faces the multiple variable-section oil mist separation collision component;

the side surface of the reducer pipe is introduced into blow-by gas of an automobile engine through a pipeline;

and the air inlet of the Venturi airflow accelerating pipe introduces air from an air inlet manifold of the automobile engine through an air extracting pipe.

Preferably, the air intake pipe is closely attached to a housing of the oil mist separator, extends along the outer shape of the housing, and is connected with an intake manifold of the automobile engine.

Preferably, the oil mist separator is disposed below a camshaft cover body of the automobile engine, and shares a housing with a crankcase pressure regulating valve of the automobile engine.

The utility model has the advantages that:

the utility model discloses can drip to the tiny particle and carry out high-efficient separation to and low pressure loss, have better cost advantage, can satisfy higher emission requirement.

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.

Drawings

Fig. 1 shows a schematic view of a prior art oil mist separator.

Fig. 2 shows a schematic structural diagram of an embodiment of the present invention.

Fig. 3 is a schematic structural view illustrating a top view of a camshaft cover body according to an embodiment of the present invention.

Fig. 4 is a schematic view showing the cross-sectional structure along direction AA in fig. 3 according to the present invention.

Fig. 5 shows a schematic view of the intake pipe of the present invention.

Detailed Description

Examples

As shown in fig. 1 to 5, the oil mist separator using a venturi tube for accelerating an air flow includes a multiple variable cross-section oil mist separating collision member 1, and an oil mist separating chamber 2 in which the multiple variable cross-section oil mist separating collision member 1 is provided.

The multiple variable cross-section oil mist separation collision component 1 is arranged at one end of the oil mist separation cavity 2;

the other end of the oil mist separation cavity 2 is provided with a Venturi airflow accelerating tube 3, and an air outlet of the Venturi airflow accelerating tube 3 points to a working surface of the multiple variable cross-section oil mist separation collision component 1 for bearing oil mist impact;

a reducer pipe 4 with the inner diameter gradually reduced is arranged between the multiple variable cross-section oil mist separation collision component 1 and the Venturi airflow accelerating pipe 3;

the end with the larger inner diameter of the reducer pipe 4 faces the Venturi airflow accelerating pipe 3, and the end with the smaller inner diameter faces the multiple variable cross-section oil mist separation collision component 1;

the side surface of the reducer pipe 4 is introduced into blow-by gas of an automobile engine through a pipeline;

the air intake of the venturi air flow accelerating tube 3 introduces air from the intake manifold of the automobile engine through the intake pipe 5.

In practical application, when the throttle body of the engine is fully opened and the supercharger works, air is introduced from an air inlet manifold of an automobile engine through the air intake pipe 5 by the air inlet of the venturi airflow accelerating pipe 3, generally, the flow of the fresh air is 2-5 times of the blow-by gas flow of the engine, the fresh air passes through the necking section of the venturi airflow accelerating pipe 3, the airflow speed is increased in the second process, a certain vacuum degree is formed, the blow-by gas introduced into the automobile engine from the side surface of the reducing pipe 4 through a pipeline is pushed, the blow-by gas flow speed of the engine is increased, and the blow-by gas finally impacts the multiple variable-section oil mist separation collision part 1 to perform oil mist separation.

Through the technical means the utility model discloses can drip to the tiny particle and carry out high-efficient separation to and low pressure loss, as passive oil mist separation scheme, have better cost advantage, can satisfy higher emission requirement.

In some embodiments, the gas intake pipe 5 is disposed closely to the housing 6 of the oil mist separator, extends along the outer shape of the housing 6, and is connected to the intake manifold of the automobile engine.

In some embodiments, the oil mist separator is arranged below a camshaft cover body of the automotive engine, sharing a housing 6 with a crankcase pressure regulating valve 7 of the automotive engine.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. The oil mist separator adopting the Venturi tube to accelerate the airflow comprises a multiple variable cross-section oil mist separation collision component (1) and an oil mist separation cavity (2) provided with the multiple variable cross-section oil mist separation collision component (1); the oil mist separation collision component is characterized in that the multiple variable cross-section oil mist separation collision component (1) is arranged at one end of the oil mist separation cavity (2);

a Venturi airflow accelerating pipe (3) is arranged at the other end of the oil mist separation cavity (2), and an air outlet of the Venturi airflow accelerating pipe (3) points to a working surface of the multiple variable cross-section oil mist separation collision component (1) for bearing oil mist impact;

a reducer pipe (4) with the inner diameter gradually reduced is arranged between the multiple variable cross-section oil mist separation collision component (1) and the Venturi airflow accelerating pipe (3);

the end with the larger inner diameter of the reducer pipe (4) faces the Venturi airflow accelerating pipe (3), and the end with the smaller inner diameter faces the multiple variable-section oil mist separation collision component (1);

the side surface of the reducer pipe (4) is introduced into blow-by gas of an automobile engine through a pipeline;

and the air inlet of the Venturi airflow accelerating pipe (3) introduces air from an air inlet manifold of the automobile engine through an air extracting pipe (5).

2. The oil mist separator with a venturi for accelerating the flow of air according to claim 1, characterized in that the gas intake pipe (5) is disposed closely to the housing (6) of the oil mist separator, extends along the outer shape of the housing (6) and is connected to the intake manifold of the automobile engine.

3. An oil mist separator for accelerating a gas flow by means of a venturi according to claim 1, characterised in that the oil mist separator is arranged below a camshaft cover body of the automotive engine, sharing a housing (6) with a crankcase pressure regulating valve (7) of the automotive engine.