CN210768979U - an engine breathing system - Google Patents

Abstract

The utility model belongs to the field of engines, and discloses an engine breathing system, which comprises a body and a chamber cover, wherein the body is provided with an exhaust gas air inlet; The cavity is closed; the first cavity is provided with a first partition plate, a second partition plate and a third partition plate in sequence, and the first partition plate and the second partition plate sequentially divide the first cavity into a space for oil and gas separation. The labyrinth cavity, the swirl channel and the adsorption cavity, the third partition plate and the side wall of the first cavity are enclosed to form an oil storage cavity; the first partition plate is provided with a first opening, and the labyrinth cavity passes through the first opening and the swirl channel. The second partition is provided with a second opening, the second opening is located below the first opening, and the swirl channel is communicated with the adsorption chamber through the second opening; the end of the third partition close to the second opening is provided with Swirl port. The utility model can greatly reduce the amount of oil exhaled by filtering the exhaust gas in three stages, which not only reduces the energy consumption of the oil, but also reduces the pollution to the environment.

Description

an engine breathing system

technical field

The utility model belongs to the technical field of engines, in particular to an engine breathing system.

Background technique

When the engine is working, part of the exhaust gas generated by the combustion chamber will escape to the crankcase with the continuous reciprocating motion of the piston. If the exhaust gas flowing into the crankcase cannot be discharged in time, the pressure in the crankcase will continue to rise to form a high pressure, which will cause the inside of the crankcase. A large amount of oil leaks from the sealing joint surface and the oil pipe, which affects the normal operation of the engine. Therefore, a breathing system needs to be set up to control the pressure in the crankcase and prevent the pressure in the crankcase from being too high.

When the breathing system exhausts gas, it is also necessary to separate oil and gas from the exhausted gas. However, the current breathing system is generally a single labyrinth structure, so that the oil and gas cannot be effectively separated, and the problem of breathing oil is prone to occur, which not only increases the energy consumption of the oil, but also pollutes the environment.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide an engine breathing system to solve the problem of the engine exhaling oil, so as to reduce oil energy consumption and environmental pollution.

The technical scheme provided by the utility model is as follows:

In one aspect, an engine breathing system is provided, comprising:

a body, the body is provided with an exhaust gas inlet;

a chamber cover, the chamber cover is provided with a first cavity, and the chamber cover is provided on the body to seal the first cavity;

The first cavity is provided with a first partition plate, a second partition plate and a third partition plate in sequence, and the first partition plate and the second partition plate partition the first cavity in order for A labyrinth cavity, a swirl channel and an adsorption cavity for oil and gas separation, the third partition plate and the side wall of the first cavity are surrounded to form an oil storage cavity;

The first partition is provided with a first opening, and the labyrinth cavity is communicated with the swirl channel through the first opening;

The second partition is provided with a second opening, the second opening is located below the first opening, and the swirl channel is communicated with the adsorption chamber through the second opening;

An end of the third partition plate close to the second opening is provided with a swirl port;

The labyrinth cavity is communicated with the air inlet, the adsorption cavity is provided with an exhaust port, and the side wall of the oil storage cavity is provided with an oil return port.

Further preferably, the first cavity includes a first side wall and a second side wall arranged oppositely;

One end of the first partition plate is arranged on the second side wall, and the other end of the first partition plate is spaced from the first side wall to form the first opening;

One end of the second partition plate is disposed on the first side wall, and the other end of the second partition plate is spaced from the second side wall to form the second opening.

Further preferably, the area of the first opening is larger than the area of the second opening.

Further preferably, the first baffle is arc-shaped;

The concave portion of the arc-shaped first partition plate is disposed toward the swirl channel.

Further preferably, it also includes a support for supporting the first baffle;

One end of the support member is arranged on the second side wall, and the other end of the support member is arranged at an end of the first partition plate away from the second side wall.

Further preferably, the second partition includes a vertical portion, a connecting portion and an inclined portion;

One end of the vertical portion is arranged on the first side wall, and the other end of the vertical portion is connected to the inclined portion through the connecting portion;

The distance from one end of the inclined portion connected to the connecting portion to the first side wall is smaller than the distance from the other end of the inclined portion to the first side wall.

Further preferably, the third partition is located below the adsorption chamber;

The third partition plate is arc-shaped, and the convex portion of the arc-shaped third partition plate is disposed toward the oil storage chamber.

Further preferably, also include the fourth partition:

the fourth partition is arranged in the labyrinth cavity;

The fourth partition divides the labyrinth cavity into a plurality of labyrinth channels.

Further preferably, it also includes a respirator;

The respirator is arranged in the adsorption chamber, and an exhaust pipe is provided on the respirator, and the exhaust pipe extends out of the chamber cover through the exhaust port for discharging the exhaust gas.

Further preferably, the chamber cover, the first cavity, the first baffle, the second baffle and the third baffle are integrally formed; and/or,

The openings of the swirl ports are arranged along a tangent to the flow direction of the exhaust gas.

Compared with the prior art, an engine breathing system provided by the present utility model has the following beneficial effects:

1) The engine breathing system of the present invention is provided with a labyrinth cavity, a swirl channel and an adsorption cavity. After the exhaust gas enters the breathing system, the first oil filter is performed on the exhaust gas through the labyrinth cavity, and the second oil filter is performed on the exhaust gas through the swirl channel. The third oil filter is carried out in the adsorption chamber of the last channel. By filtering the exhaust gas three times, the exhaled oil volume can be greatly reduced, which not only reduces the energy consumption of the oil, but also reduces the pollution to the environment.

2) The utility model utilizes the combination of the body and the chamber cover space, so that the respirator is closest to the adsorption inner cavity area with less oil mist, which greatly reduces the amount of oil exhaled.

3) Under the premise of limited space, the present utility model carries out an integral compact structure design for structures such as labyrinth, swirl and adsorption cavity, and the entire breathing system assembly has only one external respirator structure, which greatly reduces the structure of the assembly and reduces This and efficiency.

Description of drawings

In the following, in a clear and easy-to-understand manner, the preferred embodiments will be described with reference to the accompanying drawings, and the above-mentioned characteristics, technical features, advantages and implementation methods of an engine breathing system will be further described.

1 is a cross-sectional view of a chamber cover of an embodiment of an engine breathing system of the present invention;

Fig. 2 is the structural representation of the body of a kind of engine breathing system of the present invention;

3 is a cross-sectional view of a chamber cover of another embodiment of an engine breathing system of the present invention.

Explanation of reference numerals

1. Body; 11. Air inlet; 2. Chamber cover; 3. First cavity; 31. Labyrinth cavity; 32. Swirl channel; 33. Adsorption cavity; 34. Oil storage cavity; 341. Oil return port; 35, the first side wall; 36, the second side wall; 4, the first partition; 41, the first opening; 5, the second partition; 51, the second opening; 52, the vertical part; 53, the connecting part 54, inclined part; 6, third partition; 61, swirl port; 7, support; 8, fourth partition; 9, respirator; 91, first cavity; 92, second cavity.

Detailed ways

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementations of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative efforts. Obtain other implementations.

It should be understood that, when used in this specification, the term "comprising" indicates the presence of the described features, integers, steps, operations, elements and/or components, but does not exclude one or more other features, integers, steps, The existence or addition of operations, elements, components, and/or collections.

In order to make the drawings concise, only the parts related to the present invention are schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, in order to make the drawings concise and easy to understand, in some drawings, only one of the components having the same structure or function is schematically shown, or only one of them is marked. As used herein, "one" not only means "only one", but also "more than one".

The embodiment of the present utility model provides an engine breathing system, please refer to FIG. 1 and FIG. 2, including a body 1 and a chamber cover 2; the body 1 is provided with an exhaust gas inlet 11; the chamber cover 2 is provided with a first cavity 3, The chamber cover 2 is set on the body 1 to seal the first cavity 3. When the chamber cover 2 is assembled with the body 1, a gasket can be provided on the body 1 opposite to the first cavity 3. The first cavity 3 is closed.

The first cavity 3 is provided with a first partition 4, a second partition 5 and a third partition 6 in sequence, and the first partition 4 and the second partition 5 sequentially partition the first cavity 3 into a The labyrinth cavity 31, the swirl channel 32 and the adsorption cavity 33 for separating the exhaust gas from oil and gas, the third partition 6 and the side wall of the first cavity 3 are enclosed to form an oil storage cavity 34;

The first partition 4 is provided with a first opening 41, and the labyrinth cavity 31 is communicated with the swirl channel 32 through the first opening 41; the second partition 5 is provided with a second opening 51, and the second opening 51 is located in the first opening Below 41 , the swirl channel 32 communicates with the adsorption chamber 33 through the second opening 51 . The first opening 41 is the inlet of the swirl channel 32, the second opening 51 is the outlet of the swirl channel 32, and the second opening 51 is located below the first opening 41, so that the exhaust gas can pass the centrifugal force and gravity in the swirl channel 32. Separation of oil and gas in exhaust gas.

One end of the third partition 6 close to the second opening 51 is provided with a swirl port 61 , and the oil separated from the exhaust gas can enter the oil storage chamber 34 through the swirl port 61 . The labyrinth cavity 31 is arranged in communication with the air inlet 11 , the adsorption cavity 33 is provided with an exhaust port, and the side wall of the oil storage cavity 34 is provided with an oil return port 341 . The residual oil in the oil storage cavity 34 can be returned to the inner cavity of the machine body through the oil return port 341 when the piston goes up, and the inner cavity of the machine body is the cavity in the machine body 1 for storing the lubricating oil. More preferably, the opening of the swirl port 61 is arranged along the tangent of the flow direction of the exhaust gas.

In this embodiment, the exhaust gas enters the labyrinth cavity 31 from the air inlet 11 on the body 1, and the oil vapor in the exhaust gas in the labyrinth cavity 31 will be adsorbed on the cavity wall in the labyrinth cavity 31 due to condensation during the flow process. Then, the first oil filtering of the exhaust gas is realized; the labyrinth cavity 31 is connected with the swirl channel 32, the exhaust gas enters the swirl channel 32 after passing through the labyrinth cavity 31, and the centrifugal force and gravity in the swirl channel 32 are used to remove the waste gas. The oil particles are spun filtered and thrown into the oil storage chamber 34 tangentially through the swirl port 61 along the flow direction; the second oil filter for the exhaust gas is formed, and the compact arrangement is further improved in a limited space. The outlet of the swirl channel 32 is communicated with the adsorption chamber 33. After the exhaust gas after passing through the swirl channel 32 enters the adsorption chamber 33, the adsorption chamber 33 adsorbs and filters the remaining small amount of oil particles again to form a third oil filter.

The utility model can greatly reduce the amount of oil exhaled by filtering the exhaust gas in three stages, which not only reduces the energy consumption of the oil, but also reduces the pollution to the environment.

In an embodiment, please continue to refer to FIG. 1 , the first cavity 3 includes a first side wall 35 and a second side wall 36 arranged oppositely; one end of the first partition 4 is arranged on the second side wall 36, The other end of the first partition 4 is spaced from the first side wall 35 to form the above-mentioned first opening 41, so that the labyrinth cavity 31 is communicated with the swirl channel 32 through the first opening 41; One end is disposed on the first side wall 35 , and the other end of the second partition 5 is spaced from the second side wall 36 to form the above-mentioned second opening 51 , so that the swirl channel 32 passes through the second opening 51 and the adsorption chamber 33 Connectivity settings.

In the present embodiment, the first separator 4 and the second separator 5 respectively form openings communicating with the channels in such a way that the other ends are not connected to the inner wall of the first cavity 3 , which can simplify the manufacturing process.

Preferably, the area of the first opening 41 is larger than the area of the second opening 51; the exhaust gas enters the swirl channel 32 from the first opening 41 with a larger area, and flows out through the second opening 51 with a smaller area, which can improve the swirl channel 32 oil filter effect.

The first baffle 4 is arc-shaped; the concave portion of the arc-shaped first baffle 4 is disposed toward the swirl channel 32 . The first baffle 4 is arc-shaped, which can improve the centrifugal force of the swirl channel 32 , thereby improving the oil filtering effect of the swirl channel 32 .

The first cavity 3 is further provided with a support member 7 , one end of the support member 7 is disposed on the second side wall 36 , and the other end of the support member 7 is disposed at the end of the first partition 4 away from the second side wall 36 . The first baffle 4 is arc-shaped, and by arranging a support member 7 under the first baffle 4, the first baffle 4 can be supported to prevent the first baffle 4 from being deformed when the exhaust gas pressure is high.

The second partition 5 includes a vertical portion 52 , a connecting portion 53 and an inclined portion 54 ; one end of the vertical portion 52 is disposed on the first side wall 35 , and the other end of the vertical portion 52 is connected to the inclined portion 54 through the connecting portion 53 The distance from one end of the inclined portion 54 connected to the connecting portion 53 to the first side wall 35 is smaller than the distance from the other end of the inclined portion 54 to the first side wall 35 . The inclined portion 54 is inclined downward, and the inclined portion 54 and the arc-shaped first baffle 4 form a swirl channel 32 with a certain arc, which can further improve the centrifugal force of the swirl channel 32 and further improve the oil filtering effect of the swirl channel 32 .

The third partition plate 6 is located below the adsorption chamber 33 ; the third partition plate 6 is arc-shaped, and the convex portion of the arc-shaped third partition plate 6 is disposed toward the oil storage chamber 34 . The third baffle 6 is arc-shaped, which can buffer the transition when the exhaust gas enters the adsorption chamber 33 from the swirl channel 32, and the arc-shaped third baffle 6 can increase the length of the swirl channel 32, so that the oil particles in the exhaust gas can be reduced. The swirl port 61 is spun into the oil storage chamber 34 to improve the oil filtration effect.

In one embodiment, referring to FIG. 3 , at least one fourth partition 8 is further provided in the labyrinth cavity 31 , and the fourth partition 8 divides the labyrinth cavity 31 into a plurality of labyrinth channels. A fourth partition 8 is arranged in the labyrinth cavity 31 , and the oil particles in the exhaust gas can be adsorbed not only on the inner wall of the labyrinth cavity 31 , but also on the fourth partition plate 8 , thereby improving the oil filtering effect of the labyrinth cavity 31 .

In one embodiment, please refer to FIG. 1 and FIG. 3 , a respirator 9 is also provided in the adsorption chamber 33, and an exhaust pipe is provided on the respirator 9, and the exhaust pipe extends out of the chamber cover 2 through the exhaust port, Used to discharge exhaust gas. After the exhaust gas enters the adsorption chamber 33 , a small amount of oil particles remaining in the exhaust gas are adsorbed, and then the exhaust gas is fed into the respirator 9 , and the oil-filtered exhaust gas is discharged from the exhaust pipe on the respirator 9 through the respirator 9 .

The respirator 9 includes a valve body. The inner cavity of the valve body includes a first inner cavity 91 and a second inner cavity 92. The first inner cavity 91 is provided with an air inlet end, and the second inner cavity 92 is provided with an exhaust pipe. The volume of the second inner cavity 92 is larger than that of the first inner cavity 91 . The volume of the second inner cavity 92 is larger than that of the first inner cavity 91, which can expand and decelerate the exhaust gas flowing into the respirator 9 at a high speed, thereby facilitating the precipitation of oil droplets of the remaining exhaust gas, so that the oil in the exhaust gas can be fully separated, Reduce oil exhalation.

In one embodiment, the chamber cover 2 , the first cavity 3 , the first partition 4 , the second partition 5 and the third partition 6 are integrally formed. Preferably, the chamber cover 2 , the first cavity 3 , the first separator 4 , the second separator 5 , the third separator 6 and the fourth separator 8 are integrally formed, that is, when the chamber lid 2 is formed, the engine The breathing system is formed together with the chamber cover 2, so that only one external respirator 9 is required for the entire breathing system, which can greatly reduce the number of parts and purchase costs.

It should be noted that the above embodiments can be freely combined as required. The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. These improvements and Retouching should also be regarded as the protection scope of the present invention.

Claims (10)

1. An engine breathing system, comprising:

the engine body is provided with a waste gas inlet;

the chamber cover is provided with a first cavity and arranged on the machine body to seal the first cavity;

a first partition plate, a second partition plate and a third partition plate are sequentially arranged in the first cavity at intervals, the first partition plate and the second partition plate sequentially divide the first cavity into a labyrinth cavity, a cyclone channel and an adsorption cavity for oil-gas separation, and the third partition plate and the side wall of the first cavity are enclosed to form an oil storage cavity;

the first partition plate is provided with a first opening, and the labyrinth cavity is communicated with the rotational flow channel through the first opening;

a second opening is formed in the second partition plate, the second opening is located below the first opening, and the rotational flow channel is communicated with the adsorption cavity through the second opening;

a swirl port is arranged at one end of the third clapboard close to the second opening;

the labyrinth cavity is communicated with the air inlet, the adsorption cavity is provided with an air outlet, and the side wall of the oil storage cavity is provided with an oil return port.

2. The engine breathing system of claim 1,

the first cavity comprises a first side wall and a second side wall which are oppositely arranged;

one end of the first partition plate is arranged on the second side wall, and the other end of the first partition plate is spaced from the first side wall to form the first opening;

one end of the second partition plate is arranged on the first side wall, and the other end of the second partition plate is spaced from the second side wall to form the second opening.

3. The engine breathing system of claim 2,

the area of the first opening is larger than the area of the second opening.

4. The engine breathing system of claim 2,

the first partition plate is arc-shaped;

the concave part of the first baffle plate is arranged towards the swirling flow channel.

5. The engine breathing system of claim 4,

the support piece is used for supporting the first partition plate;

one end of the supporting piece is arranged on the second side wall, and the other end of the supporting piece is arranged at one end, far away from the second side wall, of the first partition board.

6. The engine breathing system of claim 2,

the second barrier includes a vertical portion, a connection portion, and an inclined portion;

one end of the vertical part is arranged on the first side wall, and the other end of the vertical part is connected with the inclined part through the connecting part;

the distance from one end of the inclined part connected with the connecting part to the first side wall is smaller than the distance from the other end of the inclined part to the first side wall.

7. The engine breathing system of claim 2,

the third partition plate is positioned below the adsorption cavity;

the third baffle is arc, and the convex part orientation of arc third baffle the oil storage chamber sets up.

8. The engine breathing system of claim 1,

still include the fourth baffle:

the fourth partition plate is arranged in the labyrinth cavity;

the fourth clapboard divides the labyrinth cavity into a plurality of labyrinth channels.

9. The engine breathing system of claim 1,

also comprises a respirator;

the respirator is arranged in the adsorption cavity, an exhaust pipe is arranged on the respirator, and the exhaust pipe extends out of the chamber cover through the exhaust port and is used for discharging the waste gas.

10. The engine breathing system of claim 1,

the chamber cover, the first cavity, the first clapboard, the second clapboard and the third clapboard are integrally formed; and/or the presence of a gas in the gas,

the opening of the swirl port is arranged along the tangent of the flowing direction of the waste gas.

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