JP2008038713A - Gas-liquid separator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve discharge performance of a separated liquid, and to restrain its backflow. <P>SOLUTION: This separator 1 is a gas-liquid separator having a cylindrical separator body 2, an introducing part (an introducing pipe 3) introducing a gas-liquid mixture in the tangent direction inside the separator body, a liquid discharge part (an oil discharge pipe 4) discharging the separated liquid and a gas exhaust part (a gas exhaust pipe 5) exhausting separated gas, and has a storage part (a housing 7) storing the liquid discharged from the liquid discharge part, a storage liquid discharge part (a storage liquid discharge pipe 9) arranged in the storage part and discharging the stored liquid and a baffle part 13 arranged in the storage part and restraining the backflow of the liquid stored in the storage part to the liquid discharge part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a gas-liquid separator, and more particularly to a gas-liquid separator that can improve the discharge performance of a separated liquid and suppress the backflow thereof.

As a conventional gas-liquid separator, one that centrifuges blow-by gas leaking from a combustion chamber of an automobile engine into gas and oil is known (see, for example, Patent Documents 1 and 2).
In Patent Document 1, an oil holding tank 6 is provided to improve the oil draining property, and the oil discharge port 61 of the oil holding tank 6 is closed while the engine is running, and the engine is stopped. A gas-liquid separator having a check valve 7 that sometimes opens the oil discharge port 61 is disclosed.
Patent Document 2 discloses a gas-liquid separator in which an oil discharge hole 46 is formed on the wall surface of the separator body.

However, in Patent Document 1, oil is continuously stored in the tank while the engine is running, so a large capacity tank is required. Further, since the check valve and its opening / closing mechanism are provided, the structure becomes complicated. Furthermore, there is a possibility that the valve body may be fixed or frozen due to an increase in oil viscosity or operation in a cold region.
In Patent Document 2, when the hole diameter of the oil discharge hole is large, the oil separated from the oil discharge hole may flow backward when the blow-by gas is sucked, and when the hole diameter of the oil discharge hole is small, the oil discharge hole may be discharged. There exists a problem that oiliness will fall.

JP 2005-146972 A JP 2003-49625 A

  This invention is made | formed in view of the said present condition, and it aims at providing the gas-liquid separator which can improve the discharge | emission property of the isolate | separated liquid and can suppress the backflow.

The present invention is as follows.
1. A cylindrical separator body, an introduction part provided in the separator body and introducing a gas-liquid mixture into the separator body in a tangential direction, and a liquid provided in the separator body and discharged. In a gas-liquid separator comprising: a liquid discharge part that is provided; and a gas discharge part that is provided in the separator body and discharges the separated gas.
A storage part for storing the liquid discharged from the liquid discharge part, a stored liquid discharge part for discharging the stored liquid provided in the storage part, and provided in the storage part and stored in the storage part A gas-liquid separator, comprising: a baffle portion that suppresses the backflow of liquid to the liquid discharge portion.
2. The said baffle part has the 1st baffle part which opposes the opening of the said liquid discharge part. The gas-liquid separator as described.
3. The baffle portion includes the first baffle portion and a second baffle portion provided around the first baffle portion, and the storage portion is formed by the first baffle portion and the second baffle portion. The internal space is partitioned into a space on the liquid discharge part side and a space on the stored liquid discharge part side. The gas-liquid separator as described.
4). The said baffle part has the taper surface which inclines with respect to a horizontal surface. To 3. The gas-liquid separator as described in any one of.
5. The said baffle part has the partition wall which partitions off the internal space of the said storage part into the space by the side of the said liquid discharge part, and the space by the side of the said storage liquid discharge part. The gas-liquid separator as described.
6). The storage tank is a storage tank to which the liquid discharge section of the separator body is connected. To 5. The gas-liquid separator as described in any one of.
7). The storage section is a housing that covers the separator body. To 5. The gas-liquid separator as described in any one of.
8). The gas-liquid mixture is blowby gas. To 7. The gas-liquid separator as described in any one of.

According to the gas-liquid separator of the present invention, the gas-liquid mixture introduced in the tangential direction from the introduction portion into the separator body is turned into a swirl flow and centrifuged into a gas and a liquid, and the separated gas is discharged as a gas. On the other hand, the separated liquid is discharged from the portion to the outside, discharged from the liquid discharge portion, temporarily stored in the storage portion, and discharged from the stored liquid discharge portion to the outside. When the gas-liquid mixture is sucked, the baffle portion suppresses the backflow of the liquid stored in the storage portion to the liquid discharge portion.
As described above, since the storage section is provided and the liquid separated by the separator main body is discharged while being stored, the liquid dischargeability from the stored liquid discharge section of the storage section can be improved. Moreover, since the valve mechanism is not provided in the storage liquid discharge part of the storage part, size reduction of the storage part and simplification of a structure are realizable. Moreover, since the baffle part is provided, the backflow of the stored liquid to the liquid discharge part of the separator main body can be suppressed, and the discharge property of the liquid from the liquid discharge part of the separator main body can be improved.
Moreover, when the said baffle part has the 1st baffle part which opposes the opening of the said liquid discharge part, while being able to suppress more reliably the backflow of the stored liquid to a liquid discharge part by a 1st baffle part, Further, it is possible to further improve the liquid discharge performance from the liquid discharge portion of the separator body.
The baffle portion includes a first baffle portion and a second baffle portion, and the first baffle portion and the second baffle portion allow the internal space of the storage portion to be on the liquid discharge portion side. And the space on the side of the stored liquid discharge part, the backflow of the stored liquid to the liquid discharge part can be more reliably suppressed by the first baffle part and the second baffle part, and the separator The liquid dischargeability from the liquid discharge portion of the main body can be further improved.
In addition, when the baffle portion has a tapered surface inclined with respect to the horizontal plane, the liquid discharged from the liquid discharge portion of the separator body is smoothly guided to the bottom side of the storage portion by the tapered surface. The
Further, when the baffle part has a partition wall that partitions the internal space of the storage part into a space on the liquid discharge part side and a space on the stored liquid discharge part side, the liquid discharge part is formed by the partition wall. As a result, it is possible to more reliably suppress the backflow of the stored liquid to the liquid and to further improve the liquid discharge performance from the liquid discharge portion of the separator body.
Moreover, when the said storage part is a housing which covers the said separator main body, it can discharge | emit while storing the isolate | separated liquid with a housing.
Moreover, when the said storage part is a storage tank to which the said liquid discharge part of the said separator main body is connected, it can discharge | emit while storing the separated liquid with a storage tank.
Furthermore, when the gas-liquid mixture is blowby gas, the blowby gas can be centrifuged into gas and oil.

1. Gas-liquid separator Embodiment 1 The gas-liquid separator according to the present invention includes a separator body, an introduction unit, a gas discharge unit, a storage unit, a stored liquid discharge unit, and a baffle unit described below. The gas-liquid separator can further include, for example, at least one of a communication unit and an intake unit described later.
Although the use etc. of the said gas-liquid separator are not ask | required in particular, For example, it uses suitably as what centrifuges the blow-by gas of a vehicle engine into gas and oil.

As long as the “separator body” is cylindrical, its configuration, shape, material, etc. are not particularly limited.
By the separator main body, the gas-liquid mixture introduced into the separator is swirled and centrifuged into gas and liquid.
The separator main body can have, for example, a cylindrical portion 2a and a tapered cylindrical portion 2b connected to one end side of the cylindrical portion (see FIGS. 1 and 4).

As long as the “introducing portion” is provided in the separator main body and introduces the gas-liquid mixture into the separator main body in the tangential direction, the configuration, shape, material, and the like are not particularly limited.
The introduction part can be, for example, an introduction pipe 3 provided on the upper part of the separator body and extending in a tangential direction of the separator body (see FIGS. 1 and 4).

As long as the “liquid discharge part” is provided at the lower part of the separator main body and discharges the separated liquid, its configuration, shape, material, etc. are not particularly limited.
The liquid discharge part can be, for example, a liquid discharge pipe 4 provided at the lower part of the separator body (see FIGS. 1 and 4).
The liquid discharge part can be arranged so as to open to the center side of a storage part, which will be described later, for example. Thereby, for example, when the vehicle travels on an inclined surface, it is possible to prevent the liquid surface of the liquid stored in the storage unit from being inclined and the liquid from flowing back to the liquid discharge unit.

As long as the “gas discharge part” is provided in the separator main body and discharges the separated gas, its configuration, shape, material, etc. are not particularly limited.
The gas discharge part can be, for example, a gas discharge pipe 5 extending in the axial direction inside the separator body (see FIGS. 1 and 4).

As long as the “reservoir” stores the liquid discharged from the liquid discharger, its configuration, shape, material, etc. are not particularly limited.
Examples of the storage section include (1) a form that is a housing 7 that covers the separator body (see FIG. 1 and the like), and (2) a storage tank 7 ′ to which a liquid discharge section of the separator body is connected. A form (refer FIG. 4 etc.) etc. can be mentioned.
The housing in the form (1) can be, for example, a head cover that constitutes a vehicle engine.
In the case of the above (2) mode, the liquid discharge part can be, for example, a liquid discharge pipe extending from the wall surface of the storage part at least inward of the storage part.

The “stored liquid discharge part” is not particularly limited in its configuration, shape, material, and the like as long as it is provided below the storage part and discharges the stored liquid.
The stored liquid discharge part can be, for example, a stored liquid discharge pipe 9 provided at a lower part of the storage part (see FIGS. 1 and 4).
The stored liquid discharge portion can be provided, for example, on the tip side of a tapered portion or an inclined portion provided on the bottom wall of the storage portion. Thereby, the discharge property of the stored liquid can be further improved.
The opening area a of the stored liquid discharge part can be set to a value smaller than the opening area b of the liquid discharge part (see FIGS. 1 and 4).

As long as the “baffle part” is provided in the storage part and suppresses the backflow of the liquid stored in the storage part to the liquid discharge part, its configuration, shape, material, etc. are not particularly limited.
The said baffle part can be fixed to the inner wall of the said storage part, or can be fixed to the said separator main body, for example.
Examples of the shape of the baffle part include a flat plate shape, a curved plate shape, a lump shape, and an irregular shape.

  The baffle part can have, for example, a first baffle part 13a facing the opening of the liquid discharge part (see FIG. 1 and the like). This 1st baffle part can have a larger surface area than the opening area of a liquid discharge part, for example.

Examples of the baffle part include (1) the first baffle part 13a and a second baffle part 13b provided around the first baffle part. These first and second baffle parts (FIG. 1 etc.), (2) Liquid discharge | emit the internal space of the said storage part. Examples include a configuration (see FIG. 5 and the like) that includes a partition wall 20 that is divided into a left and right space S1 and a storage liquid discharge portion space S2.
In the mode (1), at least one of the first baffle part and the second baffle part may have, for example, a tapered surface 14 that is inclined with respect to a horizontal plane. By this taper surface, the liquid discharged from the liquid discharge portion of the separator main body is smoothly guided to the bottom side of the storage portion.

The “communication portion” is not particularly limited in its configuration, shape, material, and the like as long as it communicates the storage portion with the upstream side of the gas-liquid separation region of the separator body and / or the introduction portion.
When the storage part is the housing 7, the communication part is provided, for example, on the upstream side of the gas-liquid separation region of the separator main body and / or the introduction part, and the communication pipes 11, 11 ′ opened to the inside of the housing. (See FIGS. 1 and 3 etc.). For example, the communication pipe 11 can be formed to extend in the tangential direction of the separator body.
In the case described above, for example, a spiral plate 17 is provided in the housing to give a turning force to the gas-liquid mixture flowing in the housing toward the upstream side of the gas-liquid separation region of the separator body and / or toward the introduction portion. Yes (see FIG. 3). For example, the spiral plate can be fixed to the inner wall of the housing or to the outer wall of the separator body.

  When the storage part is the storage tank 7 ′, the communication part may be, for example, a communication pipe 18 that connects the storage tank and the upstream side of the gas-liquid separation region of the separator body and / or the introduction part. Yes (see FIGS. 4 and 5 etc.). For example, the communication pipe 18 can be formed in a spiral shape. Thereby, a gas-liquid mixture can be centrifuged in a connection pipe.

The “intake part” is not particularly limited in its configuration, shape, material, and the like as long as it is provided at the upper part of the storage part and sucks the gas-liquid mixture outside the storage part.
The intake section may be, for example, an intake pipe 10 provided on the upper portion of the storage section (see FIGS. 1 and 4). The intake pipe 10 can be formed, for example, so as to extend from the wall surface of the storage part at least inward of the storage part.
For example, the intake portion may be formed to open in the vertical direction on the upper wall of the storage portion, or may be formed to open in the lateral direction on the peripheral wall of the storage portion.
For example, the intake section may be disposed in the vicinity of the liquid discharge section that opens toward the center of the storage section (see FIG. 4). Thereby, for example, when the vehicle travels on an inclined surface, it is possible to prevent the liquid surface of the liquid stored in the storage portion from being inclined and the liquid from flowing back to the intake portion.
The opening area c of the intake section can be set to a value smaller than the opening area d of the introduction section (see FIGS. 1 and 4).

Hereinafter, the present invention will be specifically described with reference to the drawings.
In the present embodiment, the “gas-liquid separator” according to the present invention is exemplified by a vehicle engine blow-by gas that is centrifuged into gas and oil.

(1) Gas-liquid separator The gas-liquid separator 1 which concerns on a present Example is provided with the substantially cylindrical separator main body 2, as shown in FIG. The separator body 2 has a cylindrical portion 2a and a tapered cylindrical portion 2b that is continuous with the lower end side of the cylindrical portion 2a. The peripheral wall of the cylindrical portion 2a is provided with an introduction pipe 3 (illustrated as an “introduction portion” according to the present invention) extending in the tangential direction of the separator body 2. In addition, a communication pipe 11 (illustrated as a “communication part” according to the present invention) that is parallel to the introduction pipe 3 and extends in the tangential direction of the separator main body 2 is provided on the peripheral wall of the cylindrical part 2a. The communication pipe 11 opens in a housing described later. In addition, an oil discharge pipe 4 (illustrated as a “liquid discharge portion” according to the present invention) is provided at the lower end side of the tapered cylindrical portion 2b. In addition, the center of the upper wall of the separator body 2 is illustrated as a gas discharge pipe 5 (a “gas discharge section” according to the present invention) extending in the vertical direction (swivel axis direction) inside the separator body 2. ) Is provided.

  The gas-liquid separator 1 includes a substantially cylindrical housing 7 (illustrated as a “reservoir” according to the present invention) that covers the entire separator body 2. The bottom wall of the housing 7 is provided with a stored oil discharge pipe 9 (exemplified as a “stored liquid discharge portion” according to the present invention) on the tip end side of the tapered portion 8. The opening area a of the stored oil discharge pipe 9 is set to a value smaller than the opening area b of the oil discharge pipe 4.

  An intake pipe 10 (illustrated as an “intake portion” according to the present invention) is provided on the upper side wall of the housing 7 so as to extend inward and outward of the housing 7 from the wall surface. The opening area c of the intake pipe 10 is set to a value smaller than the opening area d of the introduction pipe 3.

  A baffle portion 13 is provided in the housing 7 to prevent the stored oil from flowing back to the oil discharge pipe 4. The baffle portion 13 includes an umbrella-shaped first baffle portion 13a and a tapered cylindrical second baffle portion 13b. The first baffle portion 13 a is disposed to face the opening of the oil discharge pipe 4. The second baffle portion 13b is fixed to the outer peripheral side of the first baffle portion 13a via a support rib (not shown). The outer peripheral side of the second baffle portion 13 b is fixed to the inner wall of the housing 7. A tapered surface 14 that is inclined with respect to a horizontal plane is formed on the upper surfaces of the first and second baffle portions 13a and 13b. The first and second baffle portions 13a and 13b divide the internal space of the housing 7 into a space S1 on the oil discharge pipe 4 side and a space S2 on the stored oil discharge pipe 9 side. Note that a communication port 15 is provided between the first and second baffle portions 13a and 13b to allow the spaces S1 and S2 to communicate with each other.

(2) Action of gas-liquid separator Next, the action of the gas-liquid separator 1 will be described.
Blow-by gas leaking from the combustion chamber of the vehicle engine is introduced into the separator body 2 from the introduction pipe 3 from the tangential direction. Then, the introduced blow-by gas turns into a swirl flow and is centrifuged into gas and oil (oil mist). The separated gas is discharged to the outside through the gas discharge pipe 5, while the oil after the separation flows downward on the inner peripheral surface side of the separator body 2 by its own weight and flows from the oil discharge pipe 4 into the housing 7. It is temporarily stored in the bottom of the. Thereafter, when the idling force of the blow-by gas flowing backward from the stored oil discharge pipe 9 becomes smaller than the weight of the stored oil at the time of idling or the like, the stored oil is discharged from the stored oil discharge pipe 9 to the outside.

When the blow-by gas is sucked, the blow-by gas is sucked into the housing 7 from the intake pipe 10, and the suction force of the blow-by gas flowing backward from the stored oil discharge pipe 9 of the housing 7 is weakened. The blow-by gas that flows backward from the stored oil discharge pipe 9 into the housing 7 flows into the upstream side of the gas-liquid separation region of the separator body 2 via the communication pipe 11 and is separated into gas and liquid in the separator body 2. The Furthermore, the backflow of the oil stored in the housing 7 to the oil discharge pipe 4 is suppressed by the first and second baffle portions 13a and 13b.
During suction of blow-by gas, the suction force (negative pressure) Q applied to the gas discharge pipe 5 is the suction force Q1 of the introduction pipe 3, the suction force Q2 of the intake pipe 10, and the suction force Q3 of the stored oil discharge pipe 9. Summed up.

(3) Effects of Embodiment In the gas-liquid separator 1 of this embodiment, the housing 7 discharges the oil separated in the separator body 2 while storing it. The oil discharge performance can be improved. Further, since the stored oil discharge pipe 9 of the housing 7 is not provided with a valve mechanism that is closed during operation as in the prior art, the stored oil in the housing 7 can be discharged even during operation, and the housing 7 can be downsized. And simplification of the structure can be realized.

  Further, in this embodiment, the blow-by gas is sucked into the housing 7 by the intake pipe 10, so that the reverse flow of the blow-by gas from the stored oil discharge pipe 9 can be suppressed, and the stored oil due to the reverse flow of the blow-by gas can be suppressed. Spattering can be suppressed. As a result, the backflow of the stored oil to the oil discharge pipe 4 of the separator body 2 can be suppressed, and the oil discharge performance from the oil discharge pipe 4 of the separator body 2 can be improved.

In this embodiment, since the opening area c of the intake pipe 10 is set to a value smaller than the opening area d of the introduction pipe 3, the intake amount of blow-by gas from the intake pipe 10 can be minimized. . Therefore, most of the blow-by gas can be introduced into the separator main body 22 from the introduction pipe 3 and separated into gas and liquid.
In this embodiment, since the opening area a of the stored oil discharge pipe 9 is set to a value smaller than the opening area b of the oil discharge pipe 4, the backflow of blow-by gas to the stored oil discharge pipe 9 is more reliably suppressed. In addition, the oil discharge performance from the oil discharge pipe 4 can be further improved.

  Further, in this embodiment, the blow-by gas that has flowed back into the housing 7 from the stored oil discharge pipe 9 is caused to flow into the separator body 2 by the communication pipe 11 and gas-liquid separation is performed. Is prevented from scattering the stored oil, and the backflow gas is prevented from flowing into the oil discharge pipe 4. As a result, the backflow of the stored oil to the oil discharge pipe 4 of the separator body 2 can be more reliably suppressed, and the oil discharge performance from the oil discharge pipe 4 of the separator body 2 can be further improved.

In the present embodiment, the housing 7 is provided with a first baffle portion 13a facing the opening of the oil discharge pipe 4, and the first baffle portion 13a and the second baffle portion 13b provide an internal space for the housing 7. Since the two spaces S1 and S2 are partitioned, the backflow of the stored oil to the oil discharge pipe 4 of the separator body 2 can be more reliably suppressed, and the oil is discharged from the oil discharge pipe 4 of the separator body 2 The sex can be further improved.
Further, since the first and second baffle portions 13a and 13b are provided with tapered surfaces 14 inclined with respect to the horizontal plane, the oil discharged from the oil discharge pipe 4 of the separator body 2 by these tapered surfaces 14. Can be smoothly guided to the bottom of the housing 7.

In the present invention, the present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention depending on the purpose and application. That is, in the above-described embodiment, the communication pipe 11 is provided in the cylindrical portion 2a of the separator body 2. However, the present invention is not limited to this. For example, the communication pipe 11 is provided above the tapered cylindrical portion 2b of the separator body 2. Alternatively, as shown in FIG. 3, a communication pipe 11 ′ may be provided in the middle of the introduction pipe 3.
Moreover, you may make it provide the spiral plate 17 which gives turning force to the blow-by gas which flows in the inside of the housing 7 in the inner wall of the housing 7 in the said Example (refer FIG. 3). Thereby, the blow-by gas can be separated into gas and liquid even in the housing by the spiral plate 17.

Moreover, in the said Example, although the housing 7 was illustrated as a storage part, it is not limited to this, For example, as shown to FIG. 4 and 5, the storage tank 7 to which the oil discharge pipe 4 of the separator main body 2 is connected. It's okay. In this case, a communication pipe 18 for connecting the cylindrical portion 2a (or the upper portion of the tapered cylindrical portion 2b) of the separator body 2 and the storage tank 7 'is provided, or a communication pipe for connecting the introduction pipe 3 and the storage tank 7'. (Not shown) may be provided. Even in this case, the baffle 13 may be provided in the storage tank 7 '.
Moreover, in the said Example, although the baffle part 13 which partitions off the internal space of a storage part into upper and lower two space S1, S2 was provided, it is not limited to this, For example, as shown in FIG. You may make it provide the partition wall 20 which partitions an internal space into two space S1, S2 right and left.

  Moreover, in the said Example, although the form which provides the one intake pipe 10 in a storage part was illustrated, it is not limited to this, For example, you may make it provide a some intake pipe in a storage part. In this case, the total opening area of the plurality of intake pipes is preferably set to a value smaller than the opening area of the introduction pipe.

  It is widely used as a technique for centrifuging a gas-liquid mixture into gas and liquid. In particular, it is suitably used as a technique for centrifuging blow-by gas of a vehicle engine into gas and oil.

It is a longitudinal cross-sectional view of the gas-liquid separator which concerns on a present Example. It is the II-II sectional view taken on the line of FIG. It is a longitudinal drawing for demonstrating the other form of a gas-liquid separator. It is a longitudinal drawing for demonstrating the further another form of a gas-liquid separator. It is a longitudinal drawing for demonstrating the further another form of a gas-liquid separator.

Explanation of symbols

  1, 1 ', 21, 21'; gas-liquid separator, 2; separator body, 3; introduction pipe, 4; oil discharge pipe, 5; gas discharge pipe, 7; housing, 7 '; Storage oil discharge pipe, 10; intake pipe, 11, 11 '; communication pipe, 13; baffle part, 13a; first baffle part, 13b; second baffle part, 18; communication pipe, 20;

Claims (8)

A cylindrical separator body, an introduction part provided in the separator body and introducing a gas-liquid mixture into the separator body in a tangential direction, and a liquid provided in the separator body and discharged. In a gas-liquid separator comprising: a liquid discharge part that is provided; and a gas discharge part that is provided in the separator body and discharges the separated gas.
A storage part for storing the liquid discharged from the liquid discharge part, a stored liquid discharge part for discharging the stored liquid provided in the storage part, and provided in the storage part and stored in the storage part A gas-liquid separator, comprising: a baffle portion that suppresses the backflow of liquid to the liquid discharge portion.   The gas-liquid separator according to claim 1, wherein the baffle part includes a first baffle part facing the opening of the liquid discharge part.   The baffle portion includes the first baffle portion and a second baffle portion provided around the first baffle portion, and the storage portion is formed by the first baffle portion and the second baffle portion. The gas-liquid separator according to claim 2, wherein the internal space is partitioned into a space (S1) on the liquid discharge part side and a space (S2) on the stored liquid discharge part side.   The gas-liquid separator according to any one of claims 1 to 3, wherein the baffle portion has a tapered surface inclined with respect to a horizontal plane.   2. The air according to claim 1, wherein the baffle portion has a partition wall that partitions the internal space of the storage portion into a space on the liquid discharge portion side (S <b> 1) and a space on the storage liquid discharge portion side (S <b> 2). Liquid separator.   The gas-liquid separator according to any one of claims 1 to 5, wherein the storage unit is a storage tank to which the liquid discharge unit of the separator body is connected.   The gas-liquid separator according to any one of claims 1 to 5, wherein the storage unit is a housing that covers the separator body.   The gas-liquid separator according to any one of claims 1 to 7, wherein the gas-liquid mixture is blow-by gas.

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