Engine respirator

Abstract

The utility model discloses an engine respirator which comprises a shell, and an inner cavity of the shell is divided into an upper cavity and a lower cavity. An air inlet is formed in the upper end of the left side of the lower cavity; an air outlet is formed in the right side of the upper cavity; a separation ball is arranged above the channel in the upper cavity; a blade is arranged on the separation ball; the upper part of the arc-shaped deflector points to the channel; due to the fact that the arc-shaped flow guide plates are arranged at the bottom of the lower cavity, when gas flows to the bottom of the lower cavity, the gas can flow upwards through the arc-shaped flow guide plates, and therefore the gas can be conveniently guided into the channel, and the situation that the gas is directly discharged from the oil discharge outlet is reduced; and part of oil in the gas is adhered or sinks down when encountering the arc-shaped guide plate, and finally flows downwards to an oil discharge port at the bottom of the lower cavity from the oil passing port.

Description

Technical Field

[0001] The utility model belongs to the technical field of engine equipment, and particularly relates to an engine breather. Background Art

[0002] During the operation of the engine, some gases will leak from the gaps between the piston, piston ring and cylinder head into the inner cavity of the engine block. After passing through the channels of the engine block, cylinder head and cylinder head cover, these leaked gases (generally referred to as engine blow-by) will finally be discharged into the atmosphere through a breather. Engine blow-by is generally high-pressure and high-temperature gas after engine combustion, which will carry away a large amount of oil particles and oil vapor when flowing in the inner cavity of the engine. Therefore, when the breather discharges the blow-by, it is also necessary to separate the oil from the blow-by for recovery, so as to reduce oil consumption and waste. After the oil is separated, it can purify the blow-by discharged into the atmosphere, thereby protecting the environment.

[0003] For engine breathers, in the prior art, after retrieval, the utility model patent with the Chinese patent publication number CN205135750U discloses an engine breather, as Figure 1 shown, which mainly includes a housing a, the inner cavity of which is divided into an upper chamber b and a lower chamber c; the bottom wall of the upper chamber b is in a tapered shape that gradually shrinks from top to bottom; a channel d extending downward to the bottom of the lower chamber is provided at the lower end of the bottom wall of the upper chamber b, and there is a gap between the lower end of the channel d and the bottom wall of the lower chamber; an intake pipe e is provided on the housing a, and the intake pipe e communicates with the upper end of the lower chamber c; an exhaust pipe f is provided on the housing a, and the exhaust pipe f communicates with the upper chamber b; and a separation ball g is movably placed at the upper end of the channel d; a plurality of blades h are provided on the surface of the separation ball g.

[0004] In the prior art, for engine breathers with similar technical solutions as above, it is found that there are areas for improvement during actual implementation: when the gas of the engine flows to the oil return port at the bottom of the lower chamber, the gas is also likely to directly flow into the oil return tank from the oil return port, affecting the normal discharge of the gas from the exhaust port. Summary of the Utility Model

[0005] In view of the deficiencies and defects existing in the prior art, the purpose of the present utility model is to provide an engine breather, which solves the problem that in an engine breather in the prior art, when the gas of the engine flows to the oil return port at the bottom of the lower chamber, the gas is also likely to directly flow into the oil return tank from the oil return port, affecting the normal discharge of the gas from the exhaust port.

[0006] To solve the above technical problems, the present utility model adopts the following technical solutions: An engine breather, comprising a housing, the inner cavity of the housing being divided into an upper chamber and a lower chamber; the bottom wall of the upper chamber being in a tapered shape that gradually tapers from top to bottom; a passage extending downward from the lower end of the bottom wall of the upper chamber to the bottom of the lower chamber, and a gap being left between the lower end of the passage and the bottom wall of the lower chamber; an oil drain port being provided at the bottom of the lower chamber, an air inlet being provided at the upper left side of the lower chamber, an air outlet being provided at the right side of the upper chamber, a separation ball being provided above the passage in the upper chamber, blades being provided on the separation ball, a plurality of arc-shaped flow deflectors being provided at the bottom of the lower chamber on the side close to the air inlet, an oil through port being provided at the bottom of the arc-shaped flow deflector, the upper part of the arc-shaped flow deflector pointing to the passage, and a straight flow deflector being provided at the bottom of the lower chamber on the side away from the air inlet.

[0007] As a further improvement of the present utility model, a breathable oil separation membrane is provided at the bottom port of the passage.

[0008] As a further improvement of the present utility model, an upper right baffle and a lower right baffle are respectively provided in the upper chamber at the upper and lower parts on the right side of the separation ball, and an arc-shaped net is provided between the upper right baffle and the lower right baffle.

[0009] As a further improvement of the present utility model, an upper left baffle is provided in the upper chamber at the upper part on the left side of the separation ball.

[0010] As a further improvement of the present utility model, an inclined baffle is provided in the lower chamber on the right side of the passage.

[0011] Compared with the prior art, the present utility model has the following advantages:

[0012] 1. By providing a plurality of arc-shaped flow deflectors at the bottom of the lower chamber on the side close to the air inlet, an oil through port being provided at the bottom of the arc-shaped flow deflector, and the upper part of the arc-shaped flow deflector pointing to the passage, when the gas enters the lower chamber from the air inlet, when the gas flows to the bottom of the lower chamber, it will be upwardly deflected and flow through the arc-shaped flow deflectors, thus facilitating the diversion of the gas into the passage and reducing the direct discharge of the gas from the oil drain port. During the upward diversion of the gas by the arc-shaped flow deflectors, part of the oil in the gas will adhere to or sink down when encountering the arc-shaped flow deflectors, and finally flow downward from the oil through port to the oil drain port at the bottom of the lower chamber. The setting of the straight flow deflector can further block the gas from flowing towards the oil drain port and divert the gas towards the passage side, further reducing the discharge of the gas from the oil drain port and separating the oil and gas.

[0013] 2. By providing a breathable oil separation membrane at the bottom port of the passage, it is convenient to shunt the oil and gas and reduce the upward flow of the oil in the gas.

[0014] 3. By providing an upper right baffle and a lower right baffle respectively at the upper and lower parts on the right side of the separation ball in the upper chamber, and providing an arc-shaped net between the upper right baffle and the lower right baffle, the oil in the gas can be further adhered and blocked, facilitating the separation of oil and gas, reducing the oil component in the gas, and enabling the gas to be smoothly discharged from the exhaust port.

[0015] 4. By providing an inclined baffle on the right side of the channel in the lower chamber, the flow of oil and gas to the right side of the lower chamber is reduced. Description of the Drawings

[0016] The present utility model will be further described below in conjunction with the drawings:

[0017] Figure 1 is a schematic structural diagram of the prior art;

[0018] Figure 2 is a schematic structural diagram of the present utility model;

[0019] In the figure: 1, housing; 2, upper chamber; 3, lower chamber; 4, channel; 5, oil drain port; 6, air inlet; 7, air outlet; 8, separation ball; 9, blade; 10, arc-shaped deflector; 11, oil through port; 12, straight deflector; 13, upper right baffle; 14, lower right baffle; 15, arc-shaped net; 16, upper left baffle; 17, inclined baffle. Detailed Description of the Preferred Embodiment

[0020] The following will Figure 2 further describe the present utility model in detail. For a clearer illustration, only the structures related to the inventive points of the present utility model are shown in the figure.

[0021] For the convenience of description, a coordinate system is now defined as Figure 2 shown, with the left-right direction as the horizontal direction, the front-back direction as the longitudinal direction, and the up-down direction as the vertical direction.

[0022] An embodiment of the present utility model discloses an engine breather. Referring to Figure 2 , an engine breather includes a housing 1, and the inner cavity of the housing 1 is divided into an upper chamber 2 and a lower chamber 3; the bottom wall of the upper chamber 2 is in a tapered shape that gradually narrows from top to bottom; a channel 4 extending downward to the bottom of the lower chamber 3 is provided at the lower end of the bottom wall of the upper chamber 2, and there is a gap between the lower end of the channel 4 and the bottom wall of the lower chamber 3. An oil drain port 5 is provided at the bottom of the lower chamber 3, an air inlet 6 is provided at the upper left end of the lower chamber 3, an air outlet 7 is provided on the right side of the upper chamber 2, a separation ball 8 is provided above the channel 4 in the upper chamber 2, and blades 9 are provided on the separation ball 8. The above settings are the same as those of the prior art, and no improvement has been made in this application, so no further elaboration will be given.

[0023] In this application, a breathable oil separation membrane is provided at the bottom port of the channel 4, so as to facilitate the diversion of oil and gas and reduce the upward flow of oil in the gas.

[0024] In addition, a plurality of arc-shaped guide plates 10 are provided on one side of the bottom of the lower chamber 3 close to the air inlet 6. An oil through-hole 11 is provided at the bottom of the arc-shaped guide plate 10. The upper part of the arc-shaped guide plate 10 points to the channel 4. A straight guide plate 12 is provided on the other side of the bottom of the lower chamber 3 away from the air inlet 6.

[0025] In addition, an upper right baffle 13 and a lower right baffle 14 are respectively provided at the upper and lower parts on the right side of the separation ball 8 in the upper chamber 2. An arc-shaped net 15 is provided between the upper right baffle 13 and the lower right baffle, so as to further adhere to and block the oil in the gas, facilitate the separation of oil and gas, reduce the oil content in the gas, and enable the gas to be smoothly discharged from the exhaust port.

[0026] An upper left baffle 16 is provided at the upper left part on the left side of the separation ball 8 in the upper chamber 2. An inclined baffle 17 is provided on the right side of the channel 4 in the lower chamber 3, so as to reduce the flow of oil and gas to the right side of the lower chamber 3.

[0027] In the present utility model, a plurality of arc-shaped guide plates 10 are provided on one side of the bottom of the lower chamber 3 close to the air inlet 6. An oil through-hole 11 is provided at the bottom of the arc-shaped guide plate 10. The upper part of the arc-shaped guide plate 10 points to the channel 4. When the gas enters the lower chamber 3 from the air inlet 6 and flows to the bottom of the lower chamber 3, it will be guided upward by the arc-shaped guide plate 10, so as to facilitate the diversion of the gas into the channel 4 and reduce the direct discharge of the gas from the oil drain port 5. During the upward diversion of the gas by the arc-shaped guide plate 10, part of the oil in the gas will adhere to or sink when encountering the arc-shaped guide plate 10, and finally flow downward from the oil through-hole 11 to the oil drain port 5 at the bottom of the lower chamber 3. The setting of the straight guide plate 12 can further block the gas from flowing to the oil drain port 5 and divert the gas to the side of the channel 4, further reducing the discharge of the gas from the oil drain port 5 and separating the oil and gas.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. It should be understood that the specific embodiments described herein are only used to understand the present utility model and are not used to limit the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present utility model.

Claims

1. An engine breather, comprising a shell, the inner cavity of which is divided into an upper chamber and a lower chamber; the bottom wall of the upper chamber is in a tapered shape that tapers from top to bottom; a channel extending downward to the bottom of the lower chamber is provided at the lower end of the bottom wall of the upper chamber, and a gap is left between the lower end of the channel and the bottom wall of the lower chamber; an oil drain port is provided at the bottom of the lower chamber, an air inlet is provided at the upper left end of the lower chamber, an air outlet is provided at the right side of the upper chamber, a separation ball is provided above the channel in the upper chamber, and blades are provided on the separation ball, characterized in that: The bottom of the lower chamber is provided with a plurality of arc guide plates on the side close to the air inlet, the bottom of the arc guide plates is provided with an oil through hole, the upper part of the arc guide plates points to the channel, and the bottom of the lower chamber is provided with a straight guide plate on the side away from the air inlet.

2. An engine breather according to claim 1, characterized in that: A breathable oil-isolating membrane is provided at the bottom port of the channel.

3. An engine breather according to claim 1, characterized in that: A right upper baffle plate and a right lower baffle plate are respectively arranged at the upper part and the lower part of the right side of the separation ball in the upper chamber, and an arc net is arranged between the right upper baffle plate and the right lower baffle plate.

4. An engine breather according to claim 1, characterized in that: A left upper baffle is provided on the upper left side of the separation ball in the upper chamber.

5. An engine breather according to any one of claims 1 to 4, characterized in that: An oblique baffle is provided on the right side of the passage in the lower chamber.

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