CN114575964A

CN114575964A - Engine respirator

Info

Publication number: CN114575964A
Application number: CN202210150513.5A
Authority: CN
Inventors: 郑和瑞; 吴伟泽; 崔宝峰
Original assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Current assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2022-06-03
Anticipated expiration: 2042-02-18
Also published as: CN114575964B

Abstract

The present invention provides an engine breather, comprising: an air intake cavity comprising a first air inlet; the exhaust cavity is internally provided with a breather valve and comprises a first exhaust port; the first separation cavity comprises a first cavity body and a second cavity body, the first separation cavity further comprises a second air inlet, a third air inlet and a second air outlet, the air inlet cavity is communicated with the first cavity body through the second air inlet, the second cavity body is communicated with the air exhaust cavity through the second air outlet, the third air inlet is communicated with the first cavity body and the second cavity body, and a first oil return hole is formed in the bottom of the first separation cavity. According to the invention, the oil-gas separation efficiency is effectively improved by arranging the multiple labyrinth type cavities and arranging the oil return hole and the breather valve in the corresponding cavity.

Description

Engine respirator

Technical Field

The invention relates to the technical field of engines, in particular to a breather of an engine.

Background

With the trend of the engine industry towards light weight development, a large number of engines adopt an oil-free bottom shell or small oil bottom shell structure at present, so that the liquid level of lubricating oil of the engine is higher. The gears in the chamber cover are inevitably soaked in oil, so that a large amount of oil forms high-concentration mixed oil gas in the gear box under the stirring action of the gears. The breathing system of the engine positioned in the chamber cover is caused to breathe oil, the oil consumption is increased, and the environmental pollution is aggravated. Accordingly, there is a need for an engine respirator that overcomes the above-identified deficiencies.

Disclosure of Invention

The invention aims to provide an engine respirator.

According to one aspect of the present invention, there is provided an engine respirator comprising:

an air inlet chamber comprising a first air inlet;

the exhaust cavity is internally provided with a breather valve and comprises a first exhaust port;

the first separation cavity comprises a first cavity body and a second cavity body, the first separation cavity further comprises a second air inlet, a third air inlet and a second air outlet, the air inlet cavity is communicated with the first cavity body through the second air inlet, the second cavity body is communicated with the air exhaust cavity through the second air outlet, the third air inlet is communicated with the first cavity body and the second cavity body, and a first oil return hole is formed in the bottom of the first separation cavity;

the oil-gas mixture enters the air inlet cavity from the first air inlet, sequentially passes through the second air inlet, the first cavity, the third air inlet, the second cavity and the second air outlet, and finally enters the air outlet cavity, the waste gas is discharged from the first air outlet through the breather valve, and the separated engine oil flows back through the first oil return hole.

Preferably, still include organism and chamber cap, the chamber cap is fixed with the organism, air inlet chamber, exhaust chamber and first separation chamber all locate between organism and the chamber cap, the organism is located to first air inlet, the chamber cap is located to first exhaust port.

Preferably, the solar panel further comprises a first side wall, a second side wall, a third side wall, a first partition plate, a second partition plate, a third partition plate and a fourth partition plate, wherein the third side wall extends along the second side wall in a bending manner, the first partition plate extends from the first side wall to the second side wall, the second partition plate extends from the third side wall to the first side wall, the third partition plate extends from the second partition plate to the first partition plate, and the fourth partition plate extends from the first partition plate in a bending manner and is connected with the first side wall.

Preferably, the air inlet cavity is composed of a first side wall, a third side wall and a second partition plate, the second air inlet is positioned between the second partition plate and the first side wall, the air outlet cavity is composed of the first side wall, the first partition plate and a fourth partition plate, and the second air outlet is arranged on the fourth partition plate.

Preferably, the first cavity is composed of a first side wall, a first partition and a third partition, the second cavity is composed of a second side wall, a second partition, a third partition and a fourth partition, and the third air inlet is located between the first partition and the third partition.

Preferably, the bottom of the air inlet cavity is provided with a second oil return hole, the bottom of the air exhaust cavity is provided with a third oil return hole, the third oil return hole is communicated with the air exhaust cavity and the first separation cavity, the first oil return hole is communicated with the first separation cavity and the air inlet cavity, and the second oil return hole is communicated with the air inlet cavity and the outside of the respirator.

Preferably, an oil baffle plate is arranged below the second oil return hole and used for preventing engine oil from splashing and entering the air inlet cavity, the first oil return hole is formed in the joint of the third side wall and the third partition plate, and the third oil return hole is formed in the joint of the first partition plate and the fourth partition plate.

Preferably, the second cavity comprises an attachment part at the bottom of the second cavity, a rising part extending upwards from the attachment part, and a vortex area at the top of the rising part, the second exhaust port is arranged below the vortex area, and the rising part is arranged between the fourth partition plate and the second side wall.

Preferably, the breather valve includes the main part, is fixed in the baffle of main part and is fixed in the breathing piece of baffle, be equipped with first through-hole on the baffle, be equipped with the third cavity in the main part, breathe the piece and locate in the third cavity and cover first through-hole, breathe the piece and be used for making waste gas can only flow into first cavity from first through-hole unidirectionally.

Preferably, the first exhaust port includes a first passage connected to the third chamber and a second passage extending from the first passage to the outside of the chamber lid, the second passage having a larger diameter than the first passage, and the second passage having a larger length in the axial direction than the first passage.

Compared with the prior art, the engine breather provided by the invention has the following beneficial effects:

set up multiple labyrinth cavity and set up oil gallery and breather valve in corresponding cavity, effectively improved oil-gas separation efficiency, reduced machine oil consumption.

Drawings

The invention is described in further detail below with reference to the following figures and detailed description:

FIG. 1 is a perspective view of a chamber lid of the present invention;

FIG. 2 is a front view of the respirator of the present invention;

FIG. 3 is a front view of a chamber lid of the present invention;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 6 is a front view of the housing of the present invention;

fig. 7 is a partially enlarged view of the body of the present invention.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, without inventive effort, other drawings and embodiments can be derived from them.

Referring to fig. 1 and 6, the present invention discloses an engine respirator comprising: an inlet chamber 3, an outlet chamber 4 and a first separation chamber 5. The respirator is arranged between the body 1 and the chamber cover 2. The air inlet chamber 3 comprises a first air inlet 31 arranged on the machine body 1, and the air-fuel mixture in the engine enters the breather from the first air inlet 31. The top of the inlet chamber 3 is provided with a second inlet 32.

Referring to fig. 2 and 3, the first separation chamber 5 includes a first chamber 51 and a second chamber 52. The first cavity 51 is positioned above the air inlet cavity 3, and the first cavity 51 and the air inlet cavity 3 are communicated through the second air inlet 32. The second chamber 52 and the first chamber 51 communicate through a third air inlet 53.

The second chamber 52 further includes a skirt 521 at a bottom thereof, a riser 522 extending upwardly from the skirt 521, and a vortex region 523 at a top of the riser 522. The rising portion 522 and the exhaust chamber 4 communicate through the second exhaust port 54, and the second exhaust port 54 is located below the vortex region 523.

Referring to fig. 4 and 5, a first exhaust port 41 and a breather valve 42 are provided in the exhaust chamber 4. The breather valve 42 includes a main body 421, a baffle 422 fixed to the main body 421, and a breathing sheet 423. The baffle 422 is provided with a first through hole 424, and the main body 421 includes a third cavity 425 recessed from one end of the baffle 422 to the other end.

The third chamber 425 communicates with the outside of the engine through the first exhaust port 41. A breathing sheet 423 is secured to the baffle 422 on a side adjacent to the third cavity 425. The breathing sheet 423 covers the first through hole 424, and when the gas flows from the first through hole 424 to the third chamber 425, the breathing sheet 424 is opened. When the gas flows from the third cavity 425 to the first through hole 424, the breathing sheet 424 is closed.

Referring to FIG. 2, the respirator also includes a first side wall 61, a second side wall 62, a third side wall 63, a first baffle 71, a second baffle 72, a third baffle 73, and a fourth baffle 74. The first side wall 61 is a part of the outer frame of the chamber lid 2, and the second side wall 62 and the third side wall 63 are both disposed inside the chamber lid 2. The second sidewall 62 extends vertically downward from the top of the chamber lid 2, and the third sidewall 63 extends curvedly from the lower end of the second sidewall 62 toward the side of the intake chamber 3.

The first partition 71 extends from the first side wall 61 to the second side wall 62 and is inclined from top to bottom. The second partition 72 extends from the third side wall 63 toward the first side wall 61, and the second inlet 32 is located at an end of the second partition 72 near the first side wall 61. The second partition 72 is disposed obliquely from bottom to top, and the first partition 71 is located above the second partition 72. The first partition plate 71 and the second partition plate 72 are parallel to each other. The inlet chamber 3 is formed by a first side wall 61, a third side wall 63 and a second partition 72.

The third partition 73 extends from the end of the second partition 72 close to the second intake port 32 to the side where the second side wall 62 is located, and the third partition 73 is inclined from bottom to top. The fourth partition 74 extends vertically upward from the lower end of the first partition 71 and is connected to the top of the chamber cover 2. The third partition 73 extends below the junction of the first partition 71 and the fourth partition 74. The third partition plate 73 and the first partition plate 71 form the third air inlet 53 therebetween.

The first chamber 51 is composed of a first sidewall 61, a first partition 71, and a third partition 73. The attachment 521 is composed of a third partition 73, a second partition 72, and a second sidewall 62. The raised portion 522 is located between the second sidewall 62 and the fourth partition 74. The second exhaust port 54 opens on the fourth partition 74. The first partition plate 71, the fourth partition plate 74 and the first side wall 61 surround to form the exhaust chamber 4.

Referring to fig. 2 and 6, the oil-gas mixture enters the intake chamber 3 from the machine body 1 through the first intake port 31, then flows upwards, and part of the oil adheres to the lower surface of the second partition 72 to realize separation. The oil-gas mixture enters the first cavity 51 after being accelerated by the second air inlet 32, and part of oil is attached to the lower surface of the first partition plate 71 to realize further separation.

The air-fuel mixture is accelerated from the first chamber 51 through the third air inlet 53 and enters the second chamber 52. Because the first partition plate 71 is arranged in a downward inclined manner, the oil-gas mixture passing through the third air inlet 53 is accelerated to impact the second side wall 62, and then sequentially impacts the second partition plate 72 and the third partition plate 73 to form a vortex. In the process of impacting each wall surface, oil is attached to each wall surface to realize separation.

The mixture flows from the attachment 521 up the rise 522, swirling at the vortex region 523. The oil adheres to both sides of the rise 522 and to the top of the vortex region 523. The resulting mixture enters the exhaust chamber 4 from the second exhaust port 54.

Referring to fig. 4 and 5, the exhaust gas from which the oil is separated sequentially passes through the first through hole 424 and the breathing sheet 423, enters the third cavity 425, and is discharged from the first exhaust port 41 to the engine. The first exhaust port 41 includes a first passage 411 and a second passage 412, the second passage 412 having a larger diameter than the first passage 411, and the second passage 412 having a larger length in the axial direction than the first passage 411. The first passage 411 is located between the third cavity 425 and the second passage 412.

The first exhaust port 41 is arranged horizontally or obliquely downwards, so that external rainwater can be effectively prevented from entering the engine, and poor engine oil emulsification and lubrication are avoided. The breathing sheet 423 is an elastic blocking sheet and allows only one-way air circulation, thereby further preventing outside air from entering the inside of the engine.

Referring to fig. 1 and 2, the engine breather of the present invention further includes a first oil return hole 81 formed at the bottom of the second cavity 52, a second oil return hole 82 formed at the bottom of the intake chamber 3, and a third oil return hole 83 formed at the bottom of the exhaust chamber 4. The third oil return hole 83 is formed at the joint of the first partition plate 71 and the fourth partition plate 74, the third oil return hole 83 is obliquely and downwardly formed along the upper surface of the first partition plate 71, and the oil separated from the exhaust chamber 4 flows into the second chamber 52 through the third oil return hole 83.

The first oil return hole 81 is formed at a connection portion between the second partition 72 and the third side wall 63, the first oil return hole 81 is inclined downward along an inner surface of the third side wall 63, and the separated oil flows back downward into the intake chamber 3 from the first oil return hole 81. The first partition plate 71 and the second partition plate 72 are inclined from top to bottom to facilitate the downward flow of the oil.

A second oil return hole 82 is provided in the bottom of the intake chamber 81. An oil baffle plate 33 is further arranged below the air inlet cavity 3, and the oil baffle plate 33 further extends downwards along the third side wall 63 and is bent. The extending direction of the oil baffle plate 33 is the same as the rotating direction of the gear in the chamber cover, so that the function of guiding backflow can be achieved, and oil thrown out by the gear can be effectively isolated from entering the respirator. The oil flowing into the intake chamber 3 from the first oil return hole 81 finally flows to the gear chamber bottom from the second oil return hole 82.

The first air inlet 31 of the invention is arranged on the machine body 1, and the gear at the bottom in the gear box is inevitably soaked in oil, so that a large amount of engine oil forms high-concentration mixed oil gas in the gear box under the stirring action of the gear, and the whole gear chamber is filled with the oil thrown out by the gear. The first air inlet 31 is arranged on the side face of the machine body 1 which is far higher than the liquid level of engine oil and is completely isolated from the gear chamber, and engine oil thrown out by the motion of the transmission gear and high-concentration mixed oil gas are effectively isolated from the source and enter the breather.

Meanwhile, an integral multiple-expansion labyrinth cavity is arranged in the respirator, an outlet of each labyrinth cavity is provided with a vortex oil-liquid attaching wall surface, the oil-liquid flow velocity attached to the wall surface is greatly reduced, and the oil-gas separation efficiency is improved.

In the embodiment, the breather is arranged in the vertical direction, the oil gas flows from bottom to top, and the separated oil flows back downwards due to the self gravity and flows back to the air inlet cavity 3 from the exhaust cavity 4 to the first separation cavity 5. In other embodiments, the breather can also be arranged along the horizontal direction, and the oil return holes in each cavity are also arranged at the bottommost part of the cavity.

It will be apparent to those skilled in the art that various modifications and variations can be made in the above-described exemplary embodiments of the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims

1. An engine respirator, comprising:

an air intake cavity comprising a first air inlet;

2. The engine breather of claim 1, further comprising a body and a chamber cover, the chamber cover and the body being fixed, the intake chamber, the exhaust chamber, and the first separation chamber being disposed between the body and the chamber cover, the first intake port being disposed in the body, and the first exhaust port being disposed in the chamber cover.

3. The engine respirator of claim 1, further comprising a first side wall, a second side wall, a third side wall, a first baffle extending from the first side wall toward the second side wall, a second baffle extending from the third side wall toward the first side wall, a third baffle extending from the second baffle toward the first baffle, and a fourth baffle extending from the first baffle in a folded configuration and connected to the first side wall.

4. The engine respirator of claim 3, wherein the inlet chamber is comprised of a first sidewall, a third sidewall, and a second baffle, wherein the second inlet port is located between the second baffle and the first sidewall, wherein the exhaust chamber is comprised of the first sidewall, the first baffle, and a fourth baffle, and wherein the second outlet port is located in the fourth baffle.

5. The engine respirator of claim 3, wherein the first chamber is comprised of a first sidewall, a first baffle, and a third baffle, and wherein the second chamber is comprised of a second sidewall, a second baffle, a third baffle, and a fourth baffle, and wherein the third air inlet is located between the first baffle and the third baffle.

6. The engine respirator of claim 1, wherein a second oil return hole is formed in the bottom of the air inlet cavity, a third oil return hole is formed in the bottom of the air exhaust cavity, the third oil return hole is communicated with the air exhaust cavity and the first separation cavity, the first oil return hole is communicated with the first separation cavity and the air inlet cavity, and the second oil return hole is communicated with the air inlet cavity and the respirator exterior.

7. The engine breather of claim 6, wherein an oil baffle plate is disposed below the second oil return hole, the oil baffle plate is used for preventing engine oil from splashing into the air inlet chamber, the first oil return hole is disposed at a joint of the third side wall and the third partition plate, and the third oil return hole is disposed at a joint of the first partition plate and the fourth partition plate.

8. The engine respirator of claim 4, wherein the second chamber includes an attachment portion at a bottom thereof, a rise portion extending upwardly from the attachment portion, and a vortex region at a top of the rise portion, wherein the second exhaust port is disposed below the vortex region, and wherein the rise portion is disposed between the fourth baffle and the second sidewall.

9. The engine respirator of claim 1, wherein the breather valve comprises a main body portion, a baffle plate fixed to the main body portion, and a breather piece fixed to the baffle plate, wherein the baffle plate is provided with a first through hole, the main body portion is provided with a third cavity, the breather piece is provided in the third cavity and covers the first through hole, and the breather piece is configured to enable exhaust gas to flow into the first cavity only in one direction from the first through hole.

10. The engine respirator of claim 2, wherein the first exhaust port includes a first passage connected to the third chamber and a second passage extending from the first passage to an exterior of the cover, the second passage having a larger diameter than the first passage, the second passage having a greater length in the axial direction than the first passage.