Gas-liquid separator

Abstract

To provide a gas-liquid separator which can separate water from a water-containing gas while reducing a pressure loss in a gas-liquid separation part.SOLUTION: A gas-liquid separator includes: a housing 10 having a water storage space T at the lower side; an introduction port 1 which is connected to the housing 10 and into which a water containing gas is introduced; an inclined guide part 13 which guides the water containing gas supplied from the introduction port 1 to the interior of the housing 10 to the upper side relative to the water storage space T; and a separation plate P having a comb-like contact surface which separates water contained in the water containing gas by contact of the water containing gas guided by the inclined guide part 13 therewith.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a gas-liquid separator. [Background technology]

[0002] As an example of a gas-liquid separator, Patent Document 1 describes one that separates water contained in anode off-gas discharged from the anode of a fuel cell.

[0003] Patent Document 1 discloses a gas-liquid separator in which water-containing gas is supplied from an inlet formed in the lower part of the housing and sent vertically inside the housing using a flow path member, and in a gas-liquid separation section located in the upper part of the housing, the gas is brought into contact with multiple separation blades to create a swirl flow and separate the water. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2022-112483 A Summary of the Invention [Problem to be solved by the invention]

[0005] The gas-liquid separator described in Patent Document 1 improves separation performance by creating a swirl flow that swirls the water-containing gas while reducing pressure loss in the gas-liquid separation section, and by bringing the water-containing gas into contact with multiple separation blades.

[0006] However, when the inlet is located at the bottom of the housing, a space is formed in the upper part of the housing in which the water-containing gas can swirl, and the configuration with multiple separation blades requires a flow path (flow path member) for vertically circulating the gas, which may lead to pressure loss in the gas-liquid separation section.

[0007] For these reasons, there is a demand for a gas-liquid separator that can separate water from a water-containing gas while reducing the pressure loss in the gas-liquid separation section. [Means for solving the problem]

[0008] The characteristic configuration of the gas-liquid separator of the present invention is that it comprises a housing having a water storage space on the lower side, an inlet connected to the lower part of the housing through which a water-containing gas is introduced, an inclined guide portion that guides the water-containing gas supplied from the inlet into the inside of the housing to a position above the water storage space, and a separation plate extending vertically in a comb-tooth shape that separates the water contained in the water-containing gas by collision with the water-containing gas guided by the inclined guide portion, and having a contact surface with which the water-containing gas comes into contact upon collision.

[0009] According to this configuration, the water-containing gas introduced into the inlet is guided above the water storage space by the inclined guide section, and the water is separated by collision with the comb-tooth-shaped contact surface of the separation plate. This separation configuration enables good water separation without requiring, for example, a space for swirling the water-containing gas as a swirl flow, multiple blade-shaped members with which the swirl flow comes into contact, and a flow path (a separately provided flow path member) for vertically circulating the gas. Thus, a gas-liquid separator has been configured that can separate water from the water-containing gas while reducing pressure loss in the gas-liquid separation section. [Brief description of the drawings]

[0010] [Figure 1] FIG. 2 is an overall perspective view of a gas-liquid separator. [Diagram 2] FIG. 2 is a vertical sectional front view of the gas-liquid separator. [Diagram 3] FIG. 4 is a longitudinal sectional rear view of the gas-liquid separator. [Figure 4] FIG. 4 is a perspective view showing the internal structure of the upper housing. [Diagram 5] FIG. 4 is a perspective view showing the internal structure of a lower housing. [Figure 6] 6 is a cross-sectional view taken along line VI-VI in FIG. 2. [Figure 7] FIG. 11 is an overall perspective view of a gas-liquid separator according to another embodiment (a). [Figure 8] FIG. 11 is a longitudinal sectional front view of a gas-liquid separator according to another embodiment (a). [Figure 9] FIG. 11 is a cross-sectional plan view of a housing according to another embodiment (a). [Figure 10] FIG. 11 is a perspective view showing the internal structure of an upper housing of another embodiment (a). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, an embodiment of a gas-liquid separator according to the present invention will be described with reference to the drawings. This embodiment is not limited to the following embodiment, and various modifications are possible without departing from the spirit of the present invention.

[0012] [Basic configuration] As shown in Figures 1 to 3, gas-liquid separator A is configured to have an inlet 1 connected to the side of a resin housing 10, an outlet 2 on the top surface of the housing 10, a gas-liquid separation section As inside the housing 10 that separates water from anode off-gas (an example of a water-containing gas), and a water storage section At that collects the water separated in the gas-liquid separation section As into a water storage space T, and an electromagnetic opening / closing valve 3 on the outer bottom surface of the housing 10 that discharges the water from the water storage section At.

[0013] This gas-liquid separator A has an inlet 1 connected to a separation space S inside a housing 10, and an outlet 2 connected to a space within the internal space of the housing 10 to which dehydrated gas, etc., sent from the separation space S, is supplied.

[0014] This gas-liquid separator A functions to introduce anode off-gas (moisture-containing gas) discharged from a fuel cell in a fuel cell vehicle (FCV) through an inlet 1, separate the water contained in the anode off-gas and collect it in a water storage section At, and discharge dehydrated gas and the like from which the water has been separated through an outlet 2. In the following description, the moisture-containing gas from which moisture has been separated in the gas-liquid separator A contains a small amount of water and is therefore also referred to as dehydrated gas and the like.

[0015] The dehydrated gas and the like discharged from the gas-liquid separator A contain unreacted hydrogen gas. For this reason, fuel cell vehicles (FCVs) use the gas-liquid separator A to supply the dehydrated gas and the like to the flow path on the anode side of the fuel cell, thereby realizing efficient reuse of hydrogen gas.

[0016] 〔housing〕 1 to 3, the housing 10 is composed of an upper housing 11 and a lower housing 12. The housing 10 is integrated by fastening an upper flange 11f formed on the upper housing 11 and a lower flange 12f formed on the lower housing 12 with a plurality of bolts.

[0017] The upper housing 11 has an upper side wall 11a that surrounds the entire periphery of the upper housing 11, and is provided with an outlet 2 that extends upward from an upper wall 11p. In this upper housing 11, a gas-liquid separation section As is disposed below an intermediate wall 11q that is located lower than the upper wall 11p.

[0018] The lower housing 12 has a lower sidewall 12a that surrounds the entire periphery of the lower housing 12, and is provided with an inlet 1 that extends horizontally from the lower sidewall 12a. The lower housing 12 is provided with an inclined guide portion 13 that guides the water-containing gas sent from the inlet 1 to above the water storage space T, and a water storage portion At that stores water in the water storage space T is formed at the bottom.

[0019] The lower housing 12 has a funnel-shaped bottom wall 12b whose cross-sectional area decreases toward the bottom. The water storage section At has a water storage space T in the funnel-shaped bottom wall 12b, and a drain passage 4 is formed at the bottom end. An electromagnetic opening / closing valve 3 for opening and closing this drain passage 4 is provided on the outer surface of the bottom of the lower housing 12.

[0020] [Gas-liquid separation section] The gas-liquid separation section As includes an inclined guide section 13 that guides the water-containing gas above the water storage space T, as shown in Figures 2 and 5, and a separation plate P having a comb-tooth-shaped contact surface that separates the water contained in the water-containing gas by contacting the water-containing gas, as shown in Figures 2, 4, and 6.

[0021] The separation plate P is composed of a vertical wall-shaped first main body portion 15 and a vertical wall-shaped second main body portion 16, and these main body portions (a superordinate concept of the first main body portion 15 and the second main body portion 16) are provided in a form extending downward from the inner surface of the intermediate wall 11q of the housing 10.

[0022] The main body parts (first main body part 15, second main body part 16) are positioned such that their upper ends are connected to the inner surface side of the intermediate wall 11q of the upper housing 11 and their lower ends are inserted into the internal space of the lower housing 12. As shown in Fig. 6, the first main body part 15 and the second main body part 16 are disposed at positions surrounding the inclined guide part 13 in a plan view.

[0023] The first body portion 15 extends toward the inclined guide portion 13 in a plan view, and has a comb-like shape with a plurality of convex portions 15a extending vertically along the up-down direction to form a contact surface with which the water-containing gas comes into contact upon collision. The comb-like contact surface may be formed not only on the first body portion 15 but also on the second body portion 16.

[0024] 6, the first main body portion 15 and the second main body portion 16 are connected at their respective wall surfaces at a substantially right angle in a plan view. In the gas-liquid separation portion As, a separation space S is formed in a region extending vertically in a region surrounded by the first main body portion 15, the second main body portion 16, and the side wall portion (a generic concept of the upper side wall 11a and the lower side wall 12a) of the housing 10. The inclined guide portion 13 is disposed at a position overlapping with the separation space S in a plan view.

[0025] 2 and 5, the inclined guide portion 13 has an arc shape in a side view so as to guide the moisture-containing gas supplied horizontally from the inlet 1 upward, and has a guide surface 13a that is open upward. The inclined guide portion 13 is integrally formed with the bottom wall 12b so as to protrude upward from the bottom wall 12b in the internal space of the lower housing 12.

[0026] The first main body portion 15 is positioned at a position where it comes into direct contact with the moisture-containing gas guided by the guide surface 13a, and the moisture-containing gas guided by the guide surface 13a and flowing upward is caused to flow along the multiple convex portions 15a, thereby bringing the moisture-containing gas into contact with the convex portions 15a and separating the water.

[0027] The first main body portion 15 has a surface area of ​​the contact surface enlarged by the multiple convex portions 15a, and since the multiple convex portions 15a are oriented in the vertical direction, they do not provide significant resistance to the moisture-containing gas as it flows upward.

[0028] 2 and 6, the gas-liquid separation unit As has a first gap C1 (an example of a discharge space) between the upper wall 11p and the bottom wall 12b of the housing 10 at the end position of the first main body portion 15 opposite the second main body portion 16. The gas-liquid separation unit As has a second gap C2 (an example of a discharge space) between the end position of the second main body portion 16 opposite the first main body portion 15 and the upper wall 11p and the bottom wall 12b of the housing 10.

[0029] 2, 4 and 6, the gas-liquid separation section As includes an impact plate 17 that protrudes from the inner surface of the middle wall 11q (the upper inner surface of the housing 10) of the second main body section 16 toward the separation space S (downward) and extends from the separation plate P. The impact plate 17 starts from the end position of the second main body section 16 opposite the first main body section 15 and extends at an angle away from the side wall of the housing 10.

[0030] With this configuration, the gas-liquid separator A causes the water-containing gas supplied from the inlet 1 to collide with the multiple convex portions 15a of the first main body portion 15, thereby separating the water contained in the water-containing gas. Furthermore, the gas-liquid separator A sends out the dehydrated gas from which the water has been separated, from the first gap C1 and the second gap C2 to the outside of the separation space S. In other words, the gas-liquid separator A causes the dehydrated gas to flow from both sides of the gas-liquid separation portion As to the outside of the separation space S, and finally discharges it from the discharge port 2.

[0031] 2, the gas-liquid separation section As forms a gap G between the inner surface of the lower side wall 12a of the lower housing 12 at a portion where the inlet 1 is formed and the inclined guide section 13. This gap G prevents backflow of the water-containing gas when, for example, the pressure upstream of the inlet 1 temporarily drops or the pressure inside the housing 10 temporarily rises.

[0032] In addition, since the gas-liquid separator A has the inclined guide portion 13 disposed below the separation space S, some of the water separated from the water-containing gas may flow into the gap G. Therefore, as shown in Figures 2, 3 and 5, a recovery flow path 5 that sends the water that has entered the gap G to the water storage portion At is formed in a region that is connected to the bottom of the gap G.

[0033] The recovery passage 5 allows the water separated from the water-containing gas to flow into the water storage section At by utilizing the inclination of the bottom wall 12b of the lower housing 12. The electromagnetic on-off valve 3 maintains a closed state when not energized, and opens the discharge passage 4 when energized to discharge the water stored in the water storage section At.

[0034] [Effects of the embodiment] In this way, in the gas-liquid separator A, the moisture-containing gas introduced into the inlet 1 is guided upward while in contact with the guide surface 13a of the inclined guide section 13 inside the housing 10, and as the moisture-containing gas rises in the separation space S, it comes into contact with the comb-tooth-shaped contact surface of the gas-liquid separation section As, and the water is separated.

[0035] In particular, since the separation space S regulates the flow of the moisture-containing gas by the vertical wall-shaped first main body portion 15 and the vertical wall-shaped second main body portion 16, the inconvenience of the moisture-containing gas leaking from the separation space S to the outside via a short circuit is suppressed.

[0036] In addition, when the water-containing gas sent upward from the inclined guide section 13 rises along the separation space S, the gas-liquid separation section As brings the water-containing gas into contact with the surfaces of the multiple convex sections 15a, thereby separating the water.

[0037] In other words, the comb-tooth-shaped contact surface is formed by multiple convex portions 15a provided on the first main body portion 15, creating a wide contact surface and improving water separation performance. This gas-liquid separation portion As realizes a smaller size than a configuration in which, for example, a swirl flow is created and the water is separated by contacting it with multiple separation blades or the like.

[0038] When the water-containing gas comes into contact with the surfaces of the multiple convex portions 15a, the water turns into droplets, which easily move downward along the surfaces of the convex portions 15a, are received by the bottom wall 12b of the lower housing 12, and flow into the water storage portion At due to the inclination of the bottom wall 12b.

[0039] Furthermore, dehydrated gas and the like from which water has been separated in the separation space S flows into the first space C1 and the second space C2, and is finally discharged from the discharge port 2.

[0040] The gas-liquid separation section As is equipped with a collision plate 17 that protrudes downward from the underside of the intermediate wall 11q, so that when the moisture-containing gas that has flowed upward in the separation space S reaches the intermediate wall 11q and flows toward the second gap C2, it comes into contact with the collision plate 17, thereby suppressing the outflow of the moisture-containing gas and enabling separation of the water contained in the moisture-containing gas.

[0041] In the gas-liquid separation section As, a gap G is formed between the inclined guide section 13 and the inner surface of the lower side wall 12a of the lower housing 12, and a recovery flow path 5 is formed in a region connected to the bottom of this gap G. This prevents the water-containing gas inside the housing 10 from flowing back toward the inlet 1, and when water separated from the water-containing gas enters the gap G, the water is supplied from the recovery flow path 5 to the water storage section At and stored therein.

[0042] [Another embodiment] The present invention may be configured as follows other than the above-described embodiment (common numbers and symbols as in the embodiment are used to designate components having the same functions as in the embodiment).

[0043] (a) As shown in Figures 7 to 9, gas-liquid separator A is configured by providing an inlet 1 on the side of a resin housing 10, an outlet 2 on the top surface of the housing 10, a gas-liquid separation section As inside the housing 10 that separates water from anode off-gas (an example of a water-containing gas), and a water storage section At that collects the water separated in the gas-liquid separation section As into a water storage space T, and an electromagnetic opening / closing valve 3 on the outer bottom surface of the housing 10 that discharges the water from the water storage section At.

[0044] The gas-liquid separator A of this alternative embodiment (a), like the gas-liquid separator A described in the embodiment, separates the water contained in the anode off-gas (water-containing gas) discharged from a fuel cell mounted on a fuel cell vehicle (FCV) by supplying it to an inlet 1, and discharges dehydrated gas and the like from which the water has been separated from it through an outlet 2.

[0045] The housing 10 of the gas-liquid separator A of this alternative embodiment (a) is composed of an upper housing 11 and a lower housing 12, and the upper housing 11 and the lower housing 12 are integrated by fastening an upper flange 11f and a lower flange 12f with a plurality of bolts.

[0046] The gas-liquid separation section As includes an inclined guide section 13 that guides the water-containing gas above the water storage space T, and a separation plate P having a comb-tooth-shaped contact surface that separates the water contained in the water-containing gas by contacting the water-containing gas. The inclined guide section 13 is integrally formed with the lower housing 12 as a cylindrical flow path that guides the water-containing gas diagonally upward, and supplies the water-containing gas to a separation space S that is long in the vertical direction.

[0047] 9 and 10, the separation plate P has a vertical wall-shaped first main body portion 15 and a vertical wall-shaped second main body portion 16. These main body portions (a generic concept of the first main body portion 15 and the second main body portion 16) are provided in a form extending downward from the inner surface of the middle wall 11q of the housing 10.

[0048] 9, the first body portion 15 and the second body portion 16 are connected at a relatively large angle (obtuse angle) between their respective wall surfaces in a plan view. The first body portion 15 is disposed at a position where it comes into direct contact with the water-containing gas guided by the inclined guide portion 13, and has a comb-tooth-shaped contact surface.

[0049] The first main body portion 15 extends toward the inclined guide portion 13 in a plan view, and a comb-like contact surface is formed by a plurality of convex portions 15a along the vertical direction. In the gas-liquid separation portion As, a guide wall 18 is formed between the protruding end portion (the end portion opposite to the first main body portion 15) of the second main body portion 16 and the lower side wall 12a.

[0050] The separation space S is formed in an area of ​​the internal space of the lower housing 12 that is partitioned by the first body portion 15, the second body portion 16, and the guide wall 18. Also, as shown in Fig. 9, a first bulge 19a is formed in the lower side wall 12a of the lower housing 12 at a position adjacent to the end portion of the first body portion 15 (the end portion opposite the second body portion 16).

[0051] 9, in the lower housing 12, an auxiliary collision wall 21 is disposed in the clockwise flow direction of the water-containing gas, and a second bulging portion 19b that bulges toward the inside of the housing 10 is formed downstream of the auxiliary collision wall 21. Furthermore, a protruding wall 20 that protrudes into the inside of the housing 10 from the second bulging portion 19b is formed.

[0052] The auxiliary collision wall 21 is disposed in a positional relationship such that its lower end portion protrudes into the internal space of the lower housing 12. The auxiliary collision wall 21 has a shape in which the central position in the width direction in a plan view protrudes upstream in the flow direction of the water-containing gas, and protrusions 21a are formed at this central position and at both ends in the width direction.

[0053] [Gas flow] In the gas-liquid separation section As of this alternative embodiment (a), the water-containing gas from the inlet 1 is guided by the inclined guide section 13, causing it to collide with the first main body section 15 in the separation space S, and causing the separated water to fall onto the inner surface of the bottom wall 12b of the lower housing 12. This water is then guided from the bottom wall 12b to the water storage section At, and stored in the water storage space T.

[0054] Furthermore, the water-containing gas that has passed through the gas-liquid separation section As passes through the main gap Cm after water is separated, and thereby swirls clockwise along the inner surface (side wall) of the housing 10 in a plan view as shown by the arrow in Fig. 9. Next, the water-containing gas reaches the auxiliary collision wall 21 by moving along the inner wall of the housing 10 (the inner wall portion extending between the upper side wall 11a and the lower side wall 12a).

[0055] The hydrous gas contains a small amount of water, and when it collides with the auxiliary collision wall 21, the water is separated, and the separated water falls onto the inner surface of the bottom wall 12b of the lower housing 12 and is stored in the water storage part At. In addition, the dehydrated gas and the like from which the water has been separated are discharged to the outside from the discharge port 2.

[0056] In this way, the gas-liquid separation unit As of the alternative embodiment (a) separates water by bringing the water-containing gas, sent obliquely upward from the inclined guide unit 13, into contact with the surfaces of the multiple convex portions 15a as the water-containing gas rises along the separation space S. The gas-liquid separation unit As is configured to send the water-containing gas upward and separate the water as the water-containing gas flows upward in this manner, and therefore achieves reduced pressure loss compared to a configuration in which, for example, a vertical gas flow path is used, a swirl flow is created in the upper part of the housing, and the water is separated by contacting the gas with multiple separation vanes or the like.

[0057] (b) As described in the above embodiment, the convex portion 15a is formed on the second main body portion 16. In this alternative embodiment (b), it is also possible to form convex portions on each of the first main body portion 15 and the second main body portion 16, thereby achieving good water separation.

[0058] (c) When a plurality of convex portions 15a that form the comb-tooth-shaped contact surface of the gas-liquid separation section As are used, some of the convex portions 15a may be oblique, or the surface may be roughened.

[0059] Furthermore, the configurations disclosed in the above embodiments (including other embodiments, the same applies below) can be applied in combination with configurations disclosed in other embodiments, provided that no contradiction arises. Furthermore, the embodiments disclosed in this specification are merely examples, and the embodiments of the present invention are not limited thereto, and can be appropriately modified within the scope that does not deviate from the purpose of the present invention.

[0060] In the above-described embodiment, the following configurations are envisaged. (1) The device comprises a housing 10 having a water storage space T on the lower side, an inlet 1 connected to the housing 10 through which a water-containing gas is introduced, an inclined guide portion 13 that guides the water-containing gas supplied from the inlet 1 to the inside of the housing 10 above the water storage space T, and a separation plate P having a comb-tooth-shaped contact surface that separates the water contained in the water-containing gas by contacting the water-containing gas guided by the inclined guide portion 13.

[0061] According to this configuration, the water-containing gas introduced into the housing 10 from the inlet 1 is guided above the water storage space T by the inclined guide portion 13, and the water is separated by contacting the comb-tooth-shaped contact surface of the separation plate P. This separation configuration enables good water separation without requiring, for example, a space for swirling the water-containing gas as a swirl flow, multiple blade-shaped members with which the swirl flow comes into contact, and a flow path (a flow path member provided separately) for circulating the gas in the vertical direction.

[0062] (2) In the gas-liquid separator A of (1), it is preferable that discharge spaces (first gap C1, second gap C2) from which the water-containing gas that has come into contact with the separation plate P flows out are formed on both sides of the separation plate P.

[0063] According to this, the water-containing gas that comes into contact with the separation plate P flows into the discharge spaces (first gap C1, second gap C2) on both sides of the separation plate P after the water is separated from the gas, and is thereby discharged to the outside of the housing 10 in a state in which the inconvenience of the gas being discharged in a short-circuit manner without coming into contact with the separation plate P is suppressed.

[0064] In the gas-liquid separator A of (3)(2), the separation plate P has a main body portion (first main body portion 15, second main body portion 16) protruding from the upper inner surface of the housing 10 toward the water storage space T so as to surround the inclined guide portion 13, and a plurality of convex portions 15a extending from the main body portion toward the inclined guide portion 13 in the vertical direction, and it is preferable that a collision plate 17 extends from the separation plate P on the upper inner surface of the housing 10 to collide with the water-containing gas flowing out into the discharge space.

[0065] According to this, the water-containing gas sent to the upper side inside the housing 10 by the inclined guide portion 13 comes into contact with the multiple convex portions 15a extending from the main body portion (first main body portion 15, second main body portion 16) of the separation plate P toward the inclined guide portion 13, thereby separating the water. Also, the water-containing gas flowing on the upper inner surface of the housing 10 collides with the collision plate 17 as it flows into the discharge space, thereby making it possible to maintain high water separation performance.

[0066] (4) In any one of the gas-liquid separators A of (1) to (3), a gap G is formed between the inner surface of the housing 10 in which the inlet 1 is formed and the inclined guide portion 13, and it is preferable that the gas-liquid separator A is provided with a recovery flow path 5 in an inclined position that allows water inside the gap G to flow into the water storage space T.

[0067] With this, for example, in the event that a situation arises in which water-containing gas flows from the internal space of the housing 10 to the inlet 1, the water-containing gas inside the housing 10 flows to the gap G, thereby preventing the water from flowing back to the inlet 1. Even if water is present inside the gap G, this water can be made to flow from the recovery passage 5 to the water storage space T. [Industrial Applicability]

[0068] The present invention can be used in a gas-liquid separator. [Explanation of symbols]

[0069] 1: inlet, 5: recovery flow path, 10: housing, 13: inclined guide portion, 15: first main body portion (main body portion / separation plate), 15a: convex portion, 16: second main body portion (main body portion / separation plate), 17: collision plate, C1: first gap (discharge space), C2: second gap (discharge space), G: gap, P: separation plate, T: water storage space

Claims

1. A housing having a water storage space on the lower side; an inlet connected to a lower portion of the housing and through which a water-containing gas is introduced; an inclined guide portion that guides the water-containing gas supplied from the inlet into the housing to a position above the water storage space; The gas-liquid separator is provided with a separation plate extending vertically in a comb-like shape that separates the water contained in the water-containing gas by collision with the water-containing gas guided by the inclined guide portion, and having a contact surface with which the water-containing gas comes into contact upon collision.

2. 2. The gas-liquid separator according to claim 1, wherein discharge spaces from which the water-containing gas that has come into contact with the separation plate flows out are formed on both sides of the separation plate.

3. The separation plate has a main body portion protruding from an upper inner surface of the housing toward the water storage space so as to surround the inclined guide portion, and a plurality of convex portions extending from the main body portion toward the inclined guide portion along the up-down direction, 3. The gas-liquid separator according to claim 2, wherein an impingement plate extends from the separation plate to the upper inner surface of the housing, the impingement plate being adapted to impinge on the water-containing gas flowing out into the discharge space.

4. A gas-liquid separator as described in any one of claims 1 to 3, wherein a gap is formed between the inner surface of the housing on which the inlet is formed and the inclined guide portion, and the gas-liquid separator is provided with an inclined recovery flow path that allows water inside the gap to flow into the water storage space.

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