A gas-water separator and a hydrogen fuel cell

Abstract

The present invention relates to the technical field of hydrogen fuel cells, and discloses a gas-water separator and a hydrogen fuel cell. The gas-water separator includes a housing, a swirl fan, an air inlet, an air outlet, and a liquid discharge port; the housing has a cavity, and the cavity includes an air inlet chamber and an air outlet chamber; the swirl fan is disposed between the air inlet chamber and the air outlet chamber; the swirl fan includes a hub and a plurality of blades, and a ventilation area is formed between two adjacent blades; the air inlet is disposed on the housing and communicates with the air inlet chamber; the air outlet is disposed on the housing and communicates with the air outlet chamber; the liquid discharge port is disposed at the lower part of the housing and communicates with the cavity. The gas-water separator of the present invention has the advantages of simple structure, low production cost, high separation efficiency, good separation effect, wide applicable range of droplet particle sizes, wide applicable range of droplet flow rates, stable working performance under variable power conditions, and small pressure loss.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen fuel cell technology, and particularly to a gas-water separator and a hydrogen fuel cell. Background Art

[0002] When a hydrogen fuel cell system is in operation, the supply amount of hydrogen must be greater than the reaction consumption amount to improve the reaction efficiency of the fuel cell and reduce the reaction time of the fuel cell during acceleration; therefore, in order to improve the hydrogen utilization rate, the reacted mixed gas needs to be recycled; because a large amount of water is generated during the hydrogen-oxygen reaction, if not removed in time and allowed to accumulate in the recycled gas, on the one hand, it will inevitably cause flooding of the fuel cell, and on the other hand, it will also increase the working load of the recycling system, reduce the working performance of key recycling components such as ejectors and hydrogen pumps, and even directly cause their damage; in addition, when the hydrogen fuel cell system is in operation, the gas flow rate inside the pipeline is extremely fast, and water droplets have great kinetic energy under the action of the gas flow, so pitting corrosion will also occur, resulting in a reduction in the system life.

[0003] In order to avoid the above hazards, it is quite necessary to use a steam-water separator in the hydrogen fuel cell system for water removal; currently, the separation principle of the steam-water separators supplied on the market mainly uses the difference in gas-liquid mass for separation; the adopted structural forms are mainly baffle folding type, cavity swirling type, wire mesh type, and composite type which is any combination of the three forms.

[0004] The structures of the baffle folding type and the cavity swirling type are simple, but the separation efficiency is low, the applicable liquid droplet particle size range is small, the separation effect on smaller liquid droplets is very poor, the applicable flow rate range is narrow, and the working performance under variable power conditions is unstable; the wire mesh type steam-water separator has a high separation efficiency, but the structure is complex, the resistance is large, and it will cause a large pressure loss; the composite type steam-water separator has a high separation efficiency and can adapt to variable power conditions, but its structure is complex, the volume is large, the production cost is high, and the pressure loss caused is large. Summary of the Invention

[0005] The object of the present invention is a gas-water separator with a simple structure, low production cost, high separation efficiency, good separation effect, stable working performance under variable power conditions and small pressure loss, and a hydrogen fuel cell applying the gas-water separator.

[0006] To achieve the above object, the present invention provides a gas-water separator, including a housing, a swirl fan, an air inlet, an air outlet, and a liquid discharge port.

[0007] The housing has a cavity, which includes an air inlet chamber and an air outlet chamber connected in sequence along the gas transmission direction; a swirl fan is provided between the air inlet chamber and the air outlet chamber; the swirl fan includes a hub and a plurality of blades, and the plurality of blades are spaced at intervals in a preset order and are annularly arranged on the outer periphery of the hub along a circular track, and a ventilation area is formed between adjacent two blades; the air inlet is provided on the housing and communicates with the air inlet chamber; the air outlet is provided on the housing and communicates with the air outlet chamber; the liquid discharge port is provided at the lower part of the housing and communicates with the cavity.

[0008] Preferably, the air-water separator further includes a separator, which is arranged in the air inlet chamber and forms a liquid outlet cavity with the inner side wall of the housing. The upper end of the liquid outlet cavity communicates with the air outlet chamber, and the lower end communicates with the liquid discharge port.

[0009] More preferably, the separator includes a partition plate and an annular plate. The liquid outlet cavity includes a liquid outlet chamber and a liquid discharge channel. The liquid outlet chamber is formed between the partition plate and the bottom of the housing, and the liquid discharge channel is formed between the annular plate and the inner wall of the housing. The air outlet chamber, the liquid discharge channel, the liquid outlet chamber and the liquid discharge port are connected in sequence.

[0010] More preferably, the swirl fan further includes an outer ring plate connected to the blades. The blade has a first end and a second end. The first end is connected to the outer peripheral surface of the hub, and the second end is connected to the inner wall of the outer ring plate; an annular outer edge extending outward is provided on the outer wall surface of the outer ring plate close to the air inlet chamber, and the annular outer edge covers the separator, and the annular outer edge has a liquid discharge hole communicating with the liquid discharge channel.

[0011] Preferably, the air inlet is provided on the side wall of the housing; the central axis of the air inlet has a first intersection point with the inner wall contour of the housing, and the inner wall of the housing has a first tangent line passing through the first intersection point. The included angle a between the central axis of the air inlet and the first tangent line is an acute angle.

[0012] Preferably, the air outlet is provided on the side wall of the housing; the central axis of the air outlet has a second intersection point with the inner wall contour of the housing, and the inner wall of the housing has a second tangent line passing through the second intersection point. The included angle b between the central axis of the air outlet and the second tangent line is an acute angle.

[0013] Preferably, the blade is formed with a wind guiding surface, and the included angle c between the central axis of the hub and the wind guiding surface is an acute angle.

[0014] Preferably, the housing includes an air inlet outer housing and an air outlet outer housing, and the air outlet outer housing is detachably connected to the upper end of the air inlet outer housing; the inner wall of the air inlet outer housing and the swirl fan enclose the air inlet chamber, the inner wall of the air outlet outer housing and the swirl fan enclose the air outlet chamber, and the liquid discharge port is provided at the lower part of the air inlet outer housing.

[0015] The present invention also provides a hydrogen fuel cell, which adopts any one of the above-mentioned gas-water separators.

[0016] Compared with the prior art, a gas-water separator according to an embodiment of the present invention has the following beneficial effects: by respectively providing the air inlet and the air outlet in the air inlet chamber and the air outlet chamber, interference between the gas input into the cavity and the gas output from the cavity can be avoided, and the gas containing droplets can be guided by the blades to be transported from the air inlet chamber to the air outlet chamber and generate swirl, so that the droplets in the gas are projected onto the inner wall surface of the housing due to the centrifugal force and inertial action. After the droplets converge on the inner wall surface of the air outlet chamber, they flow along the inner wall surface of the housing to the liquid discharge port under the action of gravity for discharge, and the gas can be directly transported from the air inlet chamber to the air outlet chamber through the ventilation area, with small resistance and small pressure loss for the gas, wide applicable ranges of droplet particle sizes and droplet flow rates; therefore, the gas-water separator of the present invention has the advantages of simple structure, low production cost, high separation efficiency, good separation effect, stable working performance under variable power conditions and small pressure loss. Description of the Drawings

[0017] Figure 1 is a perspective view of a gas-water separator provided by an embodiment of the present invention;

[0018] Figure 2 is an exploded view of a gas-water separator provided by an embodiment of the present invention;

[0019] Figure 3 is a sectional view of a gas-water separator provided by an embodiment of the present invention;

[0020] Figure 4 is a perspective view of the air inlet outer housing provided by an embodiment of the present invention;

[0021] Figure 5 is a sectional view of the air inlet outer housing provided by an embodiment of the present invention;

[0022] Figure 6 is a top view of the air inlet outer housing provided by an embodiment of the present invention;

[0023] Figure 7 is a perspective view of the air outlet outer housing provided by an embodiment of the present invention;

[0024] Figure 8 It is the bottom view of the air outlet housing provided by the embodiment of the present invention;

[0025] Figure 9 It is the three-dimensional view of the swirl fan provided by the embodiment of the present invention;

[0026] Figure 10 It is the top view of the swirl fan provided by the embodiment of the present invention;

[0027] Figure 11 It is the schematic diagram of the included angle between the air guiding surface and the central axis of the hub provided by the embodiment of the present invention.

[0028] Figure 12 It is the sectional view after the intake housing, the partition board and the swirl fan are assembled provided by the embodiment of the present invention;

[0029] Figure 13 It is Figure 12 The enlarged schematic diagram at position D of

[0030] Figure 14 It is the sectional view after the air outlet housing and the swirl fan are assembled provided by the embodiment of the present invention;

[0031] Figure 15 It is Figure 14 The enlarged schematic diagram at position E of

[0032] In the figure, 1 is the housing; 11 is the intake housing; 12 is the air outlet housing; 101 is the intake chamber; 102 is the air outlet chamber;

[0033] 2 is the swirl fan; 21 is the hub; 22 is the blade; 23 is the outer ring plate; 221 is the ventilation area; 222 is the air guiding surface; 231 is the annular outer edge; 232 is the liquid discharge hole; 233 is the liquid collecting groove;

[0034] 3 is the air inlet;

[0035] 4 is the air outlet;

[0036] 5 is the liquid discharge port;

[0037] 61 is the partition board; 62 is the annular plate; 611 is the liquid outlet chamber; 621 is the liquid discharge channel;

[0038] 30 is the first annular mounting portion, 301 is the first mounting hole;

[0039] 40 is the second annular mounting portion; 401 is the second mounting hole;

[0040] a is the included angle between the central axis of the air inlet and the first tangent line;

[0041] b is the included angle between the central axis of the air outlet and the second tangent line;

[0042] C. The included angle between the central axis of the wheel hub and the air guiding surface. Specific embodiments

[0043] The following further describes in detail the specific embodiments of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0044] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0045] The terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0046] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through other features between them. Moreover, the first feature being "above", "above", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "below", and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature is at a lower horizontal height than the second feature.

[0048] As Figures 1-3 shown, a preferred gas-liquid separator in an embodiment of the present invention includes a housing 1, a swirl fan 2, an air inlet 3, an air outlet 4, and a liquid drain port 5.

[0049] The housing 1 has a cavity, which includes an air inlet chamber 101 and an air outlet chamber 102 connected in sequence along the gas transportation direction; there is a swirl fan 2 between the air inlet chamber 101 and the air outlet chamber 102; the air inlet 3 is provided on the housing 1 and communicates with the air inlet chamber 101; the air outlet 4 is provided on the housing 1 and communicates with the air outlet chamber 102; the liquid drain port 5 is provided at the lower part of the housing 1 and communicates with the cavity.

[0050] Based on this technical solution, by respectively arranging the air inlet 3 and the air outlet 4 in the air inlet chamber 101 and the air outlet chamber 102, it is possible to avoid interference between the gas input into the cavity and the gas output from the cavity, and through the blades 22 and the ventilation area 221, guide the gas containing droplets to be transported from the air inlet chamber 101 to the air outlet chamber 102 and generate swirl, so that more droplets in the gas are projected onto the inner wall surface of the housing 1 due to the centrifugal force and inertial action. After the droplets converge, they flow along the inner wall surface of the housing 1 under the action of gravity to the liquid drain port 5 for discharge, and the gas is directly transported from the air inlet chamber 101 to the air outlet chamber 102 through the ventilation area 221. The resistance suffered by the gas is small, the pressure loss is small, the applicable droplet particle size range is wide, and the applicable droplet flow rate range is wide; therefore, the present invention has the advantages of simple structure, low production cost, high separation efficiency, good separation effect, stable working performance under variable power conditions, and small pressure loss.

[0051] See Figure 2 and Figure 3 In the housing 1 provided by the embodiment of the present invention, the housing 1 includes an air inlet outer housing 11 and an air outlet outer housing 12, and the air outlet outer housing 12 is detachably connected to the upper end of the air inlet outer housing 11; the inner wall of the air inlet outer housing 11 and the swirl fan 2 enclose the air inlet chamber 101, the inner wall of the air outlet outer housing 12 and the swirl fan 2 enclose the air outlet chamber 102, and the liquid drain port 5 is provided at the lower part of the air inlet outer housing 11. The housing 1 is composed of the detachably connected air inlet outer housing 11 and air outlet outer housing 12, which facilitates the assembly and disassembly of the air-water separator. By arranging the liquid drain port 5 at the lower part of the air inlet outer housing 11, the accumulated water in the cavity can be discharged by the action of gravity.

[0052] See Figure 4 、 Figure 5 、 Figure 6 、 Figure 12 and Figure 13 In the air-water separator provided by the embodiment of the present invention, an isolation member is further included. The isolation member is arranged in the air inlet chamber 101 and forms a liquid outlet cavity with the inner side wall of the housing 1. The upper end of the liquid outlet cavity communicates with the air outlet chamber 102, and the lower end communicates with the liquid drain port 5.

[0053] Preferably, the separator includes a partition plate 61 and an annular plate 62. The liquid outlet chamber includes a liquid outlet chamber 611 and a liquid discharge channel 621. The liquid outlet chamber 611 is formed between the partition plate 61 and the bottom of the housing 1, and the liquid discharge channel 621 is formed between the annular plate 62 and the inner wall of the housing 1. The gas outlet chamber 102, the liquid discharge channel 621, the liquid outlet chamber 611, and the liquid discharge port 5 are communicated in sequence.

[0054] During the operation of the hydrogen fuel cell, the circulating gas in the hydrogen gas path enters the interior of the intake chamber 101 from the intake port 3. The mixed gas in the intake chamber 101 passes through the swirl fan 2 under the action of pressure. The mixed gas swirls under the guidance of the blades 22. The liquid droplets are thrown towards the inner wall surface of the gas outlet housing 12 under the action of centrifugal force and inertia. After the liquid droplets converge, they flow along the inner wall surface of the gas outlet housing 12 into the liquid discharge channel 621 under the action of gravity, and then are discharged into the liquid outlet chamber 611 after passing through the liquid discharge channel 621, and finally are discharged through the liquid discharge port 5; the gas continues to flow forward and diffuse in the gas outlet chamber, and finally is discharged through the gas outlet 4. Through the partition plate 61 and the annular plate 62, the liquid outlet chamber isolated from the intake chamber 101 can be formed, avoiding the intersection of the liquid in the liquid outlet chamber and the mixed gas in the intake chamber 101.

[0055] See Figure 4 、 Figure 5 and Figure 6 As shown in FIGS.

[0056] Specifically, the intake port 3 is provided on the side wall of the intake housing 11, and the first tangent line is the inner wall tangent line of the intake housing 11.

[0057] See Figure 7 and Figure 8 As shown in FIGS.

[0058] Specifically, the air outlet 4 is provided on the side wall of the air outlet outer shell 12, and the second tangent line is the tangent line of the inner wall of the air outlet outer shell 12.

[0059] See Figure 9 , Figure 10 and Figure 11 , the swirl fan 2 provided by the embodiment of the present invention includes a hub 21 and a plurality of blades 22. The plurality of blades 22 are sequentially spaced at a preset order and arranged in a circular track around the outer periphery of the hub 21. A ventilation area 221 is formed between two adjacent blades 22; the gas in the intake chamber 101 reaches the outlet chamber 102 along the ventilation area 221. The blade is formed with a wind guiding surface 222, and the included angle c between the central axis of the hub 21 and the wind guiding surface 222 is an acute angle.

[0060] Preferably, the swirl fan 2 further includes an outer ring plate 23 connected to the blade 22. The blade 22 has a first end and a second end. The first end is connected to the outer peripheral surface of the hub 21, and the second end is connected to the inner wall of the outer ring plate 23; an annular outer edge 231 extending outward is provided on the outer wall surface of the outer ring plate 23 close to the intake chamber 101. The annular outer edge 231 covers the separator, and the annular outer edge 231 has a drain hole 232 communicated with the drain channel 621.

[0061] See Figure 14 and Figure 15 , and in combination with Figure 12 and Figure 13 Understand that the air-water separator provided by the embodiment of the present invention can form a liquid collection tank 233 through the outer wall of the outer ring plate 23, the upper surface of the annular outer edge 231, and the inner wall of the air outlet outer shell 12. After the liquid droplets converge, they flow into the liquid collection tank 233 along the inner wall surface of the air outlet outer shell 12 under the action of gravity, and then flow into the drain channel 621 from the liquid collection tank 233 through the drain hole 232, and then flow into the liquid outlet chamber 611 along the drain channel 621, and finally are discharged through the drain port 5.

[0062] See Figure 1 , Figure 4 , Figure 7 and Figure 8, in some embodiments, an outer wall of an upper end of the intake air outer shell 11 has a first annular mounting portion 30 extending outward in a circle. The first annular mounting portion 30 has a plurality of first mounting holes 301. An outer wall of a lower end of the outlet air outer shell 12 has a second annular mounting portion 40 extending outward in a circle. The second annular mounting portion 40 has a plurality of second mounting holes 401. The plurality of second mounting holes 401 correspond to the plurality of first mounting holes 301 one by one. By passing bolts through the first mounting holes 301 and the second mounting holes 401, the outlet air outer shell 12 is mounted on the upper end of the intake air outer shell 11.

[0063] The present invention also provides a hydrogen fuel cell, and the hydrogen fuel cell employs any one of the above-mentioned gas-water separators.

[0064] In summary, a gas-water separator provided by an embodiment of the present invention has the following beneficial effects:

[0065] 1. By adopting the method that the intake port 3 and the outlet port 4 are respectively arranged in the intake chamber 101 and the outlet chamber 102, interference between the gas input into the cavity and the gas output from the cavity can be avoided, and it can be avoided that the gas entering the cavity from the intake port 3 leaves the cavity from the outlet port 4 without gas-liquid separation by the swirl fan 2, thereby improving the gas-liquid separation efficiency of the gas-water separator.

[0066] 2. By adopting the method of arranging the swirl fan 2 between the intake chamber 101 and the outlet chamber 102, the blades 22 can guide the gas containing droplets to be directly transported from the intake chamber 101 to the outlet chamber 102 and generate swirl, so that more droplets in the gas can be ejected onto the inner wall surface of the housing 1 due to the centrifugal force and inertial action. After the droplets converge, they flow along the inner wall surface of the housing 1 under the action of gravity to the liquid discharge port 5 for discharge. It is applicable to a large range of droplet diameters and a wide range of droplet flow rates, and has stable performance under variable working rate conditions.

[0067] 3. By adopting the method of forming a ventilation area 221 between two adjacent blades 22, the gas can be directly transported from the intake chamber 101 to the outlet chamber 102 through the ventilation area 221. The resistance suffered by the gas is small, the pressure loss is small, and it is applicable to a wide range of droplet diameters and a wide range of droplet flow rates.

[0068] 4. By adopting the method of detachably connecting the outlet air outer shell 12 to the upper end of the intake air outer shell 11, it is convenient for the assembly and disassembly of the gas-water separator.

[0069] 5. By adopting the isolation member, a liquid discharge cavity isolated from the intake chamber 101 can be formed with the inner wall of the housing 1, avoiding the intersection of the liquid in the liquid discharge cavity and the gas in the intake chamber 101.

[0070] 6. By using the outer ring plate 23, the annular outer edge 231 and the liquid discharge holes 232, a liquid collection tank 233 can be formed by the outer wall of the outer ring plate 23, the upper surface of the annular outer edge 231, and the inner wall of the air outlet housing 12. The liquid collection tank 233 can collect the liquid flowing down along the inner wall surface of the air outlet housing 12 to the maximum extent, and enable these liquids to be discharged along the paths of the liquid discharge holes 232, the liquid discharge channel 621, the liquid outlet chamber 611, and the liquid discharge port 5, with good liquid discharge effect.

[0071] 7. By adopting the manner that the included angle a between the central axis of the air inlet 3 and the first tangent line is an acute angle, the gas input into the cavity along the air inlet 3 can be rectified, improving the gas-liquid separation efficiency of the gas-liquid separator.

[0072] 8. By adopting the manner that the included angle b between the central axis of the air outlet 4 and the second tangent line is an acute angle, it is beneficial for more liquid droplets in the gas to be projected onto the inner wall surface of the air outlet housing 12, improving the gas-liquid separation efficiency of the gas-liquid separator.

[0073] 9. By using the air inlet housing 11, the air outlet housing 12, the partition plate 61, the swirl fan 2, the air inlet 3, the air outlet 4, and the liquid discharge port 5, the gas-liquid separator can be formed, which has the advantages of simple structure and low production cost.

[0074] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and substitutions can still be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A gas-water separator, characterized in that, Comprising: A housing having a cavity, the cavity including an air inlet chamber and an air outlet chamber connected in sequence along the gas transport direction; A swirl fan disposed between the air inlet chamber and the air outlet chamber; the swirl fan includes a hub and a plurality of blades, the plurality of blades are spaced at intervals in a preset order and are arranged in a circular trajectory around the outer periphery of the hub, and a ventilation area is formed between adjacent two of the blades; An air inlet disposed on the housing and communicating with the air inlet chamber; An air outlet disposed on the housing and communicating with the air outlet chamber; A liquid drain port disposed at the lower part of the housing and communicating with the cavity; Further comprising a separator disposed in the air inlet chamber and forming a liquid outlet cavity with the inner side wall of the housing, the upper end of the liquid outlet cavity communicates with the air outlet chamber, and the lower end communicates with the liquid drain port; The separator includes a partition plate and an annular plate, the liquid outlet cavity includes a liquid outlet chamber and a liquid drain channel, the liquid outlet chamber is formed between the partition plate and the bottom of the housing, the liquid drain channel is formed between the annular plate and the inner wall of the housing, and the air outlet chamber, the liquid drain channel, the liquid outlet chamber and the liquid drain port are communicated in sequence; The swirl fan further includes an outer ring plate connected to the blades, the blades have a first end and a second end, the first end is connected to the outer peripheral surface of the hub, and the second end is connected to the inner wall of the outer ring plate; an outer annular edge extending outward is provided on the outer wall surface of one end of the outer ring plate close to the air inlet chamber, the outer annular edge covers the separator, and the outer annular edge has a liquid drain hole communicating with the liquid drain channel.

2. The gas-water separator according to claim 1, characterized in that, The air inlet is disposed on the side wall of the housing; the central axis of the air inlet has a first intersection point with the inner wall contour of the housing, the inner wall of the housing has a first tangent line passing through the first intersection point, and the included angle a between the central axis of the air inlet and the first tangent line is an acute angle.

3. The gas-water separator according to claim 1, characterized in that, The air outlet is disposed on the side wall of the housing; the central axis of the air outlet has a second intersection point with the inner wall contour of the housing, the inner wall of the housing has a second tangent line passing through the second intersection point, and the included angle b between the central axis of the air outlet and the second tangent line is an acute angle.

4. The gas-water separator according to claim 1, wherein The blades are formed with a wind guiding surface, and the included angle c between the central axis of the hub and the wind guiding surface is an acute angle.

5. The gas-water separator according to claim 1, characterized in that, The housing includes an air inlet outer housing and an air outlet outer housing, the air outlet outer housing is detachably connected to the upper end of the air inlet outer housing; the inner wall of the air inlet outer housing and the swirl fan enclose the air inlet chamber, the inner wall of the air outlet outer housing and the swirl fan enclose the air outlet chamber, and the liquid drain port is disposed at the lower part of the air inlet outer housing.

6. A hydrogen fuel cell, characterized in that, Comprising the air-water separator according to any one of claims 1-5.

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