Three-dimensional oil mist separator

Abstract

 A three-dimensional oil mist separator is provided. The oil mist separator includes a negative-pressure chamber (1) formed between a top cover (2) and a body (3). A labyrinth (7) is formed between the body (3) and a partition board (6). Baffle plates (11) on the body (3) and baffle plates (12) on the partition board (6) are interleaved in a staggered manner such that an internal cavity of the labyrinth (7) has turns spatially distributed. An upper oil suction inlet (10) and a lower oil suction inlet (9) are formed on the body (3). The negative-pressure chamber (1) is in communication with the labyrinth (7) through the upper oil suction inlet (10) and the lower oil suction inlet (9). The present invention solves the problem of poor oil mist separation effect in the prior art that the lubricant separated by the oil mist separator cannot quickly flow back into the oil chamber when the engine operates in an inverted position, such that the oil mist separator can normally work, no matter when the engine operates in a normal position or inverted position.

Description

BACKGROUND OF THE INVENTION

Field of Invention

[0001] The present invention relates to a three-dimensional labyrinth-type oil mist separator.

Related Art

[0002] A cylinder body of a four-stroke engine is generally disposed with a breathing apparatus. The breathing apparatus generally separates a lubricant from a lubricant mist by using a labyrinth-type oil mist separator and then returns the separated liquid lubricant to an oil chamber. A conventional oil mist separator cannot achieve a desirable oil mist separation effect. Especially when the engine operates in an inverted position, the lubricant separated from the oil mist cannot quickly flow back into the oil chamber. As a result, the working performance of the engine is affected.

SUMMARY OF THE INVENTION

[0003] Accordingly, the present invention is directed to a three-dimensional oil mist separator, which has a compact structure and can achieve a desirable oil mist separation effect even when the engine is inverted, so as to overcome the defects in the prior art as mentioned above.

[0004] A technical solution is provided as follows.

[0005] A three-dimensional oil mist separator includes a negative-pressure chamber formed between a top cover and a body. A labyrinth is formed between the body and a partition board. Baffle plates on the body and baffle plates on the partition board are interleaved in a staggered manner such that an internal cavity of the labyrinth has turns spatially distributed. An upper oil suction inlet and a lower oil suction inlet are formed on the body. The negative-pressure chamber is in communication with the labyrinth through the upper oil oil suction inlet and the lower oil suction inlet.

[0006] A groove is formed on the partition board corresponding to a position of the lower oil suction inlet, and a port of the lower oil suction inlet is located in the groove.

[0007] The present invention achieves the following efficacies.

[0008] The present invention solves the problem of poor oil mist separation effect in the prior art that the lubricant separated by the oil mist separator cannot quickly flow back into the oil chamber when the engine operates in an inverted position, such that the oil mist separator can normally work, no matter when the engine operates in a normal position or inverted position.

BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The present invention will become more fully understood from the detailed description given herein below for illustration only, and thus are not limitative of the present invention, and wherein:

FIG. 1 is a schematic view of an external structure of the present invention;

FIG. 2 is a cross-sectional view of the present invention taken along Plane A-A in FIG. 1.

FIG. 3 is a cross-sectional view of the present invention taken along Plane B-B in FIG. 2.

FIG. 4 is a cross-sectional view of the present invention taken along Plane C-C in FIG. 1.

FIG. 5 is a first unfolded cross-sectional view of Plane C-C in FIG. 1 according to the present invention;

FIG. 6 is a second unfolded cross-sectional view of Plane C-C in FIG. 1 according to the present invention

FIG. 7 is a first schematic exploded structural view of the present invention; and

FIG. 8 is a second schematic exploded structural view of the present invention.

1 Negative-pressure chamber

2 Top cover

3 Body

4 Screw

5 Cam chamber

6 Partition board

7 Labyrinth

8 Oil return pipe

9 Lower oil suction inlet

10 Upper oil suction inlet

11 Baffle plate

12 Baffle plate

DETAILED DESCRIPTION OF THE INVENTION

[0010] The present invention will be further illustrated in detail below with reference to the accompanying drawings.

[0011] Referring to FIGs. 1-8, a three-dimensional oil mist separator includes a negative-pressure chamber 1 formed between a top cover 2 and a body 3. A labyrinth 7 is formed between the body 3 and a partition board 6. Baffle plates 11 on the body 3 and baffle plates 12 on the partition board 6 are interleaved in a staggered manner such that an internal cavity of the labyrinth 7 has turns spatially distributed. An upper oil suction inlet 10 and a lower oil suction inlet 9 are formed on the body 3. The negative-pressure chamber 1 is in communication with the labyrinth 7 through the upper oil suction inlet 10 and the lower oil suction inlet 9. A groove is formed on the partition board 6 corresponding to a position of the lower oil suction inlet 9, and a port of the lower oil suction inlet 9 is located in the groove.

[0012] In practice, the lubricant attached to a wall face of the labyrinth 7 always flows downwards due to the gravity, and the baffle plates protruding from the bottom surface blocks the lubricant. Since the structure of the engine is formed such that a pressure in an oil return pipe 8 and the negative-pressure chamber 1 in communication with the oil return pipe is always lower than a pressure in the labyrinth 7 and a cam chamber 5, the accumulated lubricant is drawn into the negative-pressure chamber 1 through the upper oil suction inlet 10 and the lower oil suction inlet 9 on the body 3, and then returned to the oil chamber of the engine through the oil return pipe 8. When the cylinder head is placed upwards, the lubricant is accumulated at a lower portion of the labyrinth 7 adjacent to the partition board 6, and drawn into the negative-pressure chamber through the lower oil suction inlet 9; and when the cylinder head is placed downwards, the lubricant is accumulated at a lower portion of the labyrinth 7 far away from the partition board 6, and drawn into the negative-pressure chamber 1 through the upper oil suction inlet 10. Therefore, the oil mist separator can normally work, no matter when the engine operates in a normal position or inverted position, thereby achieving a desirable oil mist separation effect.

[0013] Other parts related to the present invention but not illustrated herein is identical to the prior art.

Claims

1. A three-dimensional oil mist separator, comprising a negative-pressure chamber (1) formed between a top cover (2) and a body (3), wherein a labyrinth (7) is formed between the body (3) and a partition board (6), baffle plates (11) on the body (3) and baffle plates (12) on the partition board (6) are interleaved in a staggered manner such that an internal cavity of the labyrinth (7) has turns spatially distributed, an upper oil suction inlet (10) and a lower oil suction inlet (9) are formed on the body (3), and the negative-pressure chamber (1) is in communication with the labyrinth (7) through the upper oil suction inlet (10) and the lower oil suction inlet (9).

2. The three-dimensional oil mist separator according to claim 1, wherein a groove is formed on the partition board (6) corresponding to a position of the lower oil suction inlet (9), and a port of the lower oil suction inlet (9) is located in the groove.

Drawing