Gas discharge device

Abstract

The gas discharging device according to the present invention includes a first housing having a first inlet and a first outlet, the first inlet for introducing gas into the first housing; a slider movably disposed within the first housing along a first direction, at least a portion of the slider being located within the first outlet, the slider and the first outlet defining a discharge channel, the area of ​​the flow cross-section of the discharge channel being changeable during the movement of the slider along the first direction to change the gas flow rate ejected from the discharge channel; a first sealing member movably disposed within the first housing along the first direction to have a sealing position and an open position; and a driver disposed on the first housing, the driver having a driving part connected to the slider and the first sealing member. Therefore, the gas discharging device according to the present invention has the advantages of facilitating gas discharge and allowing for changing the gas flow rate.

Description

Technical Field

[0001] This invention relates to the field of ejector technology, and more specifically to a gas discharge device. Background Technology

[0002] In related technologies, hydrogen fuel ejectors require customized design based on system performance. Generally, the ejector design is tailored to meet the system's maximum electrical density. After design completion, the ejector dimensions are fixed, and its performance is simultaneously locked; under the low electrical density conditions of hydrogen fuel systems, the ejector performance cannot meet system requirements. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of the present invention provide a gas discharge device.

[0005] A gas discharging device according to an embodiment of the present invention includes:

[0006] A first housing, the first housing having a first inlet and a first outlet, the first inlet being used to introduce gas into the first housing;

[0007] A slider is movably disposed within the first housing along a first direction, at least a portion of the slider is located within the first outlet, the slider and the first outlet define a discharge channel, and the area of ​​the flow cross section of the discharge channel can be changed during the movement of the slider along the first direction in order to change the gas flow rate ejected from the discharge channel;

[0008] A first sealing element is movably disposed within the first housing along the first direction so that the first sealing element has a sealing position and an open position. In the sealing position, the first sealing element separates the first inlet from the discharge channel so that the first inlet and the discharge channel are not connected. In the open position, the first inlet is connected to the discharge channel.

[0009] A driver is provided on the first housing, and the driver is provided with a driving part connected to the slider and the first sealing member. The driving part can drive the slider and the first sealing member to move in the first direction.

[0010] Therefore, the gas discharge device according to the embodiments of the present invention has the advantages of facilitating gas discharge and allowing for changes in gas discharge flow rate.

[0011] In some embodiments, the first housing is provided with a dispensing core, the dispensing core having a dispensing cavity and a second inlet and a second outlet communicating with the dispensing cavity, the first inlet communicating with the dispensing cavity through the second inlet, the discharge channel communicating with the dispensing cavity through the second outlet, and at the blocking position, the first blocking member blocks the second inlet.

[0012] In some embodiments, the dispensing core is located between the first sealing element and the discharge channel in the first direction;

[0013] The second outlet is located on the side of the distribution core facing the first sealing element.

[0014] In some embodiments, the dispensing core has a first through hole extending through it along the first direction, and the peripheral side of the dispensing core is connected to the inner wall surface of the first housing.

[0015] The driving part is a rod extending along the first direction, and the end of the driving part passes through the first through hole and is connected to the slider;

[0016] The first sealing member is an annular plate, and the thickness direction of the first sealing member is the first direction. The first sealing member is sleeved on the driving part, and the periphery of the first sealing member is slidably connected to the inner wall surface of the first housing. In the sealing position, the first sealing member abuts against the distribution core and blocks the second outlet. In the open position, the first sealing member, the distribution core, and the inner wall surface of the first housing define a first cavity. The first inlet, the second inlet, the distribution cavity, the second outlet, the first cavity, the first through hole, and the discharge channel are sequentially connected.

[0017] In some embodiments, the dispensing core includes a first inner ring body, a second outer ring body, a first annular side plate, and a second annular side plate. The axial directions of the first inner ring body, the second outer ring body, the first annular side plate, and the second annular side plate are all in the first direction. The first inner ring body and the second outer ring body both extend along the first direction. The thickness directions of the first annular side plate and the second annular side plate are both in the first direction. The second outer ring body is located on the outer periphery of the first inner ring body. The inner edges of the first annular side plate and the second annular side plate are respectively connected to the two ends of the first inner ring body in the first direction. The outer edges of the first annular side plate and the second annular side plate are respectively connected to the two ends of the second outer ring body in the first direction.

[0018] The first annular side plate is located between the second annular side plate and the first sealing member. There are multiple second outlets, which are circumferentially spaced on the first annular side plate. The second inlet is opened on the second outer ring body.

[0019] The first inner ring body defines the first through hole, and the driving part is spaced apart from the first inner ring body.

[0020] In some embodiments, the second outer ring body is provided with a plurality of vent holes that penetrate it, and the plurality of vent holes are spaced apart in the circumferential direction of the second outer ring body.

[0021] In some embodiments, the actuator is a proportional solenoid valve, which can drive the drive unit to move in a first direction away from the first outlet;

[0022] The driver is provided with an elastic element that can undergo elastic deformation in the first direction. The elastic element is connected to the driving part so as to drive the driving part to move in the first direction along the direction adjacent to the first outlet.

[0023] In some embodiments, the first housing has a second through hole, the driving part passes through the second through hole and extends into the first housing, and the driving part is provided with a second sealing member, the periphery of the second sealing member being slidably connected to the second through hole to block the second through hole.

[0024] In some embodiments, the outer diameter of the slider decreases in the first direction in a direction away from the dispensing core;

[0025] The variable diameter section of the first outlet has a preset size in the first direction, and the inner diameter of the variable diameter section of the first outlet decreases in the first direction away from the distribution core. At least a portion of the slider is located within the variable diameter section of the first outlet.

[0026] The gas discharge device according to an embodiment of the present invention further includes a second housing, which is located on one side of the first housing in the first direction. The second housing has a mixing chamber, a connecting chamber, and an outlet chamber that are sequentially connected in the first direction. The cross-sectional area of ​​each of the mixing chamber and the outlet chamber in the first direction is greater than or equal to that of the connecting chamber. The second housing has an ejector inlet that communicates with the mixing chamber and a main outlet that communicates with the outlet chamber. The discharge channel communicates with the mixing chamber. The cross-section of the mixing chamber decreases in the first direction away from the first housing, and the cross-section of the outlet chamber increases in the first direction away from the first housing. Attached Figure Description

[0027] Fig. 1 This is a perspective view of a gas discharge device according to an embodiment of the present invention.

[0028] Fig. 2 This is a front view of a gas discharge device according to an embodiment of the present invention.

[0029] Fig. 3 This is a cross-sectional view of a gas discharge device according to an embodiment of the present invention.

[0030] Figure label:

[0031] First housing 1, first inlet 11, first outlet 12, discharge channel 13, second through hole 14;

[0032] Slider 2;

[0033] First sealing element 3, second sealing element 31, first cavity 32;

[0034] Driver 4, drive unit 41;

[0035] Distribution core 5, distribution cavity 51, second inlet 52, second outlet 53, first through hole 54, first inner ring body 55, second outer ring body 56, first annular side plate 57, second annular side plate 58, vent hole 59.

[0036] Second housing 6, mixing chamber 61, connecting chamber 62, outlet chamber 63, ejection inlet 64, main outlet 65. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0038] The gas discharge device according to an embodiment of the present invention will now be described with reference to the accompanying drawings. Figs. 1 to 3 As shown, the gas discharge device according to an embodiment of the present invention includes a first housing 1, a slider 2, a first sealing member 3, and a driver 4.

[0039] The first housing 1 has a first inlet 11 and a first outlet 12. The first inlet 11 is used to introduce gas into the first housing 1. For example, the first housing 1 is a circular housing, and the cavity of the first housing 1 is a cylindrical cavity.

[0040] A slider 2 is movably disposed within a first housing 1 along a first direction. At least a portion of the slider 2 is located within a first outlet 12. The slider 2 and the first outlet 12 define a discharge channel 13. As the slider 2 moves along the first direction, the cross-sectional area of ​​the discharge channel 13 can be changed to alter the gas flow rate ejected from the discharge channel 13. Specifically, at least a portion of at least one of the outer diameter of the slider 2 and the diameter (inner diameter) of the first outlet 12 is a variable diameter section in the first direction. When the slider 2 moves in the first direction, the cross-sectional area of ​​the discharge channel 13 can increase or decrease to change the gas flow rate ejected from the discharge channel 13. An increase in the cross-sectional area of ​​the discharge channel 13 increases the gas flow rate ejected from the discharge channel 13; a decrease in the cross-sectional area of ​​the discharge channel 13 decreases the gas flow rate ejected from the discharge channel 13. The magnitude of the gas flow rate ejected from the discharge channel 13 is a crucial factor determining the ejector's ejection capability. The ability to change the gas flow rate of the discharge channel 13 facilitates adjustments to the ejector's ejection capability, thereby better meeting system requirements. The first direction can be vertical, as shown by the arrows in the figure. For example, the first outlet 12 is located at the bottom of the first housing 1, and at least a portion of at least one of the outer diameter of the slider 2 and the diameter of the first outlet 12 is a variable diameter section in the vertical direction. When the slider 2 moves upward, the cross-sectional area of ​​the discharge channel 13 increases.

[0041] The first sealing member 3 is movably disposed within the first housing 1 along a first direction, such that the first sealing member 3 has a sealing position and an open position. In the sealing position, the first sealing member 3 separates the first inlet 11 from the discharge channel 13, preventing the first inlet 11 from communicating with the discharge channel 13, thereby preventing the gas discharge device from discharging gas. In the open position, the first inlet 11 communicates with the discharge channel 13, allowing the gas discharge device to discharge gas from the discharge channel 13. For example, the sealing position is located below the open position. Furthermore, in the sealing position, the slider 2 seals the first outlet 12; in the open position, the slider 2 is spaced apart from the first outlet 12 to form the discharge channel 13.

[0042] The actuator 4 is mounted on the first housing 1. The actuator 4 has a drive unit 41 connected to the slider 2 and the first sealing member 3. The drive unit 41 can drive the slider 2 and the first sealing member 3 to move in a first direction. Thus, the drive unit 41 of the actuator 4 can drive the first sealing member 3 to move in the first direction, moving it between an open position and a sealed position. Furthermore, the drive unit 41 of the actuator 4 can drive the slider 2 to move in the first direction, thereby changing the cross-sectional area of ​​the discharge channel 13 and thus changing the flow rate of the air discharged from the discharge channel 13. For example, the actuator can be one of a proportional valve, a solenoid valve, or a motor.

[0043] Therefore, the gas discharge device according to the embodiments of the present invention has the advantages of facilitating gas discharge and allowing for changes in gas discharge flow rate.

[0044] like Fig. 3 As shown, in some embodiments, a distribution core 5 is provided inside the first housing 1. The distribution core 5 has a distribution cavity 51 and a second inlet 52 and a second outlet 53 communicating with the distribution cavity 51. The first inlet 11 communicates with the distribution cavity 51 through the second inlet 52, and the discharge channel 13 communicates with the distribution cavity 51 through the second outlet 53. In the blocking position, the first blocking member 3 blocks the second inlet 52.

[0045] Specifically, the distribution core 5 is located between the first blocking member 3 and the discharge channel 13 in the first direction, and the second outlet 53 is opened on the side of the distribution core 5 facing the first blocking member 3. Therefore, when the first blocking member 3 moves in the first direction towards the distribution core 5 to the blocking position, the first blocking member 3 can block the outlet 53, thereby separating the first inlet 11 from the discharge channel 13, preventing communication between them. For example, the first blocking member 3, the distribution core 5, and the discharge channel 13 are arranged sequentially from top to bottom, with the second outlet 53 located above the distribution core 5. The first blocking member 3 can move downwards to the blocking position, and when the slider 5 moves downwards, the flow cross-sectional area of ​​the discharge channel 13 decreases. The flow cross-section of the discharge channel 13 is perpendicular to the first direction.

[0046] like Fig. 3 As shown, in some embodiments, the dispensing core 5 has a first through hole 54 extending through it in a first direction, and the first through hole 54 communicates with the dispensing cavity 51 through a second outlet 53. The peripheral side of the dispensing core 5 is connected to the inner wall surface of the first housing 1 so that the dispensing core 5 can separate the cavity of the first housing 1. For example, the first through hole 54 extends through the dispensing core 5 in a vertical direction.

[0047] The driving part 41 is a rod extending in a first direction, and the end of the driving part 41 passes through the first through hole 54 and is connected to the slider 2. For example, the driving part 41 is a rod extending in a vertical direction, and the lower end of the driving part 41 passes through the first through hole 54 and is connected to the slider 2.

[0048] The first sealing member 3 is an annular plate. The thickness direction of the first sealing member 3 is the first direction. The first sealing member 3 is sleeved on the driving part 41. The periphery of the first sealing member 3 is slidably connected to the inner wall surface of the first housing 1 so that the first sealing member 3 can separate the cavity of the first housing 1.

[0049] In the blocked position, the first blocking member 3 abuts against the distribution core 5 and blocks the second outlet 53; in the open position, the first blocking member 3, the distribution core 5 and the inner wall of the first housing 1 define the first cavity 32, and the first inlet 11, the second inlet 52, the distribution cavity 51, the second outlet 53, the first cavity 32, the first through hole 54 and the discharge channel 13 are connected in sequence.

[0050] For example, the drive unit 41 moves the first sealing member 3 downward and abuts against the top surface of the distribution core 5 to block the second outlet 53. A sealing block extending into the second outlet 53 can be provided on the first sealing member 3. The drive unit 41 moves the first sealing member 3 upward, thereby defining the first cavity 32 by the lower surface of the first sealing member 3, the top surface of the distribution core 5, and the inner wall surface of the first housing 1. Gas can flow sequentially through the first inlet 11, the second inlet 52, the distribution cavity 51, the second outlet 53, the first cavity 32, the first through hole 54, and the discharge channel 13. The outer periphery of both the distribution core 5 and the first sealing member 3 is circular.

[0051] like Fig. 3 As shown, in some embodiments, the distribution core 5 includes a first inner ring 55, a second outer ring 56, a first annular side plate 57, and a second annular side plate 58.

[0052] The axial directions of the first inner ring 55, the second outer ring 56, the first annular side plate 57, and the second annular side plate 58 are all in the first direction. The first inner ring 55 and the second outer ring 56 both extend along the first direction, and the thickness directions of the first annular side plate 57 and the second annular side plate 58 are also in the first direction. The second outer ring 56 is located on the outer periphery of the first inner ring 55. The inner edges of the first annular side plate 57 and the second annular side plate 58 are respectively connected to the two ends of the first inner ring 55 in the first direction. The outer edges of the first annular side plate 57 and the second annular side plate 58 are respectively connected to the two ends of the second outer ring 56 in the first direction.

[0053] For example, the axial directions of the first inner ring 55, the second outer ring 56, the first annular side plate 57, and the second annular side plate 58 are all vertical. The first inner ring 55 and the second outer ring 56 both extend vertically. The thickness directions of the first annular side plate 57 and the second annular side plate 58 are both vertical. The inner edges of the first annular side plate 57 and the second annular side plate 58 are respectively connected to the two ends of the first inner ring 55 in the vertical direction. The outer edges of the first annular side plate 57 and the second annular side plate 58 are respectively connected to the two ends of the second outer ring 56 in the vertical direction.

[0054] The first annular side plate 57 is located between the second annular side plate 58 and the first sealing member 3. There are multiple second outlets 53, which are circumferentially spaced on the first annular side plate 57. The second inlet 52 is opened on the second outer ring body 56. For example, the first annular side plate 57 is located above the second annular side plate 58.

[0055] The first inner ring 55 defines the first through hole 54, and the driving part 41 is spaced apart from the first inner ring 55.

[0056] In some embodiments, the second outer ring body 56 is provided with a plurality of vent holes 59 extending through it, and the plurality of vent holes 59 are spaced apart in the circumferential direction of the second outer ring body 56. Thus, gas between the second outer ring body 56 and the inner wall surface of the first housing 1 can enter the distribution cavity 51 through the vent holes 59.

[0057] like Figs. 1 to 3 As shown, in some embodiments, the actuator 4 is a proportional solenoid valve, which can drive the drive unit 41 to move (a preset distance) in a first direction away from the first outlet 12. Specifically, the actuator 4 can drive the drive unit 41 (valve core rod) to move in the first direction (away from the blocking position), thereby causing the drive unit 41 (valve core rod) to drive the slider 2 and the first blocking member 3 to move from the blocking position to the opening position. For example, the actuator 4 can drive the drive unit 41 to move upward a preset distance, so that the drive unit 41 (valve core rod) can drive the slider 2 and the first blocking member 3 to move upward a preset distance.

[0058] The actuator 4 is equipped with an elastic element (not shown in the figure), which can elastically deform in a first direction. The elastic element is connected to the drive unit 41 so as to drive the drive unit 41 to move in the first direction along the direction adjacent to the first outlet 12. When the actuator 4 is not working, the elastic element can drive the drive unit 41 to move in the first direction (towards the adjacent sealing position), thereby causing the drive unit 41 (valve core rod) to drive the slider 2 and the first sealing member 3 to move from the open position to the sealing position. For example, if the elastic element is a spring, when the actuator 4 is not energized, the elastic element can drive the drive unit 41 to move downward by a preset distance, so that the drive unit 41 (valve core rod) can drive the slider 2 and the first sealing member 3 to move downward by a preset distance.

[0059] like Fig. 3As shown, in some embodiments, the first housing 1 has a second through hole 14. The driving part 41 passes through the second through hole 14 and extends into the first housing 1. The driving part 41 is provided with a second sealing member 31. The periphery of the second sealing member 31 is slidably connected to the second through hole 14 to seal the second through hole 14. The thickness direction of the second sealing member 31 is the first direction, and the second sealing member 31 can further ensure the sealing performance of the first housing 1. The second sealing member 31 has the function of protecting the actuator 4 and preventing gas from entering the actuator 4; there is a safety risk if gas (hydrogen) enters the actuator 4; the overall product has high requirements for airtightness, and the second sealing member 31 and the first sealing member 31 play a double sealing role to ensure the sealing performance of the first housing 1. For example, the actuator 4 is located at the top of the first housing 1 and seals the upper opening of the second through hole 14. The driving part 41 passes downward through the second through hole 14 and extends into the first housing 1. The outer periphery of the second through hole 14 and the second sealing member 31 are both circular. For example, the second sealing member 31 is a sealing gasket.

[0060] In some embodiments, the outer diameter of the slider 2 decreases in a first direction away from the dispensing core 5. For example, the slider 2 has a conical structure, and its outer diameter points downwards.

[0061] The first outlet 12 includes a reducing section and a straight section. The reducing section of the first outlet 12 has a preset size in a first direction, and the inner diameter of the reducing section of the first outlet 12 decreases in the first direction away from the distributing core 5. At least a portion of the slider 2 is located within the reducing section of the first outlet 12. For example, the reducing section of the first outlet 12 is a conical orifice, the diameter of the reducing section of the first outlet 12 decreases downward, and the reducing section of the first outlet 12 is located above the straight section.

[0062] like Figs. 1 to 3 As shown, in some embodiments, the gas discharge device further includes a second housing 6.

[0063] The second housing 6 is located on one side of the first housing 1 in a first direction. The second housing 6 has a mixing chamber 61, a connecting chamber 62, and an outlet chamber 63 that are sequentially connected in the first direction (along the direction away from the first housing 1). The cross-sectional area of ​​each of the mixing chamber 61 and the outlet chamber 63 perpendicular to the first direction is greater than or equal to the cross-sectional area of ​​the connecting chamber 62 perpendicular to the first direction. The discharge channel 13 is connected to the mixing chamber 61. The cross-sectional area of ​​the mixing chamber 61 perpendicular to the first direction decreases in the first direction away from the first housing 1, and the cross-sectional area of ​​the outlet chamber 63 perpendicular to the first direction increases in the first direction away from the first housing 1. For example, the cross-sectional area of ​​each of the mixing chamber 61 and the outlet chamber 63 perpendicular to the vertical direction is greater than or equal to the cross-sectional area of ​​the connecting chamber 62 perpendicular to the vertical direction. The cross-sectional area of ​​the mixing chamber 61 perpendicular to the vertical direction decreases downward, and the cross-sectional area of ​​the outlet chamber 63 perpendicular to the vertical direction increases downward.

[0064] The second housing 6 has an ejector inlet 64 communicating with the mixing chamber 61 and a main outlet 65 communicating with the outlet chamber 63. Specifically, after high-pressure gas enters the first housing 1 through the first inlet 11, the driving part 41 of the driver 4 drives the first sealing member 3 from the sealed position to the open position, thereby allowing the high-pressure gas to enter the mixing chamber 61 through the discharge channel 13, thus creating a high-speed low-pressure zone, or even a negative pressure, in the mixing chamber 61 adjacent to the discharge channel 13. The ejector gas enters the mixing chamber 61 through the ejector inlet 64 and mixes with the high-pressure gas, then sequentially enters the connecting chamber 62 and the outlet chamber 63 before being discharged from the main outlet 65. For example, the second housing 6 is located on the lower side of the first housing 1, and the mixing chamber 61, the connecting chamber 62, and the outlet chamber 63 are connected sequentially from top to bottom. The main outlet 65, the first outlet 12, the mixing chamber 61, the connecting chamber 62, and the outlet chamber 63 are at the same axial position.

[0065] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0067] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0068] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0069] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0070] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A gas discharge device, characterized in that, include: A first housing, the first housing having a first inlet and a first outlet, the first inlet being used to introduce gas into the first housing; A slider is movably disposed within the first housing along a first direction, at least a portion of the slider is located within the first outlet, the slider and the first outlet define a discharge channel, and the area of ​​the flow cross section of the discharge channel can be changed during the movement of the slider along the first direction in order to change the gas flow rate ejected from the discharge channel; A first sealing element is movably disposed within the first housing along the first direction so that the first sealing element has a sealing position and an open position. In the sealing position, the first sealing element separates the first inlet from the discharge channel so that the first inlet and the discharge channel are not connected. In the open position, the first inlet is connected to the discharge channel. A driver is provided on the first housing, and the driver is provided with a driving part connected to the slider and the first sealing member. The driving part can drive the slider and the first sealing member to move in the first direction. The first housing is provided with a distribution core, the distribution core having a distribution cavity and a second inlet and a second outlet communicating with the distribution cavity. The first inlet is communicating with the distribution cavity through the second inlet, and the discharge channel is communicating with the distribution cavity through the second outlet. At the blocking position, the first blocking member blocks the second inlet.

2. The gas discharge device according to claim 1, characterized in that, The distribution core is located between the first sealing element and the discharge channel in the first direction; The second outlet is located on the side of the distribution core facing the first sealing element.

3. The gas discharge device according to claim 2, characterized in that, The dispensing core has a first through hole extending through it along the first direction, and the peripheral side of the dispensing core is connected to the inner wall surface of the first housing. The driving part is a rod extending along the first direction, and the end of the driving part passes through the first through hole and is connected to the slider; The first sealing member is an annular plate, and the thickness direction of the first sealing member is the first direction. The first sealing member is sleeved on the driving part, and the periphery of the first sealing member is slidably connected to the inner wall surface of the first housing. In the sealing position, the first sealing member abuts against the distribution core and blocks the second outlet. In the open position, the first sealing member, the distribution core, and the inner wall surface of the first housing define a first cavity. The first inlet, the second inlet, the distribution cavity, the second outlet, the first cavity, the first through hole, and the discharge channel are sequentially connected.

4. The gas discharge device according to claim 3, characterized in that, The dispensing core includes a first inner ring body, a second outer ring body, a first annular side plate, and a second annular side plate. The axial directions of the first inner ring body, the second outer ring body, the first annular side plate, and the second annular side plate are all in the first direction. The first inner ring body and the second outer ring body both extend along the first direction. The thickness directions of the first annular side plate and the second annular side plate are both in the first direction. The second outer ring body is located on the outer periphery of the first inner ring body. The inner edges of the first annular side plate and the second annular side plate are respectively connected to the two ends of the first inner ring body in the first direction. The outer edges of the first annular side plate and the second annular side plate are respectively connected to the two ends of the second outer ring body in the first direction. The first annular side plate is located between the second annular side plate and the first sealing member. There are multiple second outlets, which are circumferentially spaced on the first annular side plate. The second inlet is opened on the second outer ring body. The first inner ring body defines the first through hole, and the driving part is spaced apart from the first inner ring body.

5. The gas discharge device according to claim 4, characterized in that, The second outer ring body is provided with a plurality of vent holes that penetrate it, and the plurality of vent holes are spaced apart in the circumferential direction of the second outer ring body.

6. The gas discharge device according to claim 3, characterized in that, The actuator is a proportional solenoid valve, and the actuator can drive the drive unit to move in a first direction away from the first outlet; The driver is provided with an elastic element that can undergo elastic deformation in the first direction. The elastic element is connected to the driving part so as to drive the driving part to move in the first direction along the direction adjacent to the first outlet.

7. The gas discharge device according to claim 3, characterized in that, The first housing has a second through hole, the driving part passes through the second through hole and extends into the first housing, and the driving part is provided with a second sealing member, the periphery of the second sealing member being slidably connected to the second through hole to seal the second through hole.

8. The gas discharge device according to claim 2, characterized in that, The outer diameter of the slider decreases in the first direction away from the distribution core; The variable diameter section of the first outlet has a preset size in the first direction, and the inner diameter of the variable diameter section of the first outlet decreases in the first direction away from the distribution core. At least a portion of the slider is located within the variable diameter section of the first outlet.

9. The gas discharge device according to any one of claims 1-8, characterized in that, It also includes a second housing located on one side of the first housing in the first direction. The second housing has a mixing chamber, a connecting chamber, and an outlet chamber that are sequentially connected in the first direction. The cross-sectional area of ​​each of the mixing chamber and the outlet chamber perpendicular to the first direction is greater than or equal to the cross-sectional area of ​​the connecting chamber perpendicular to the first direction. The second housing has an ejector inlet connected to the mixing chamber and a main outlet connected to the outlet chamber. The discharge channel is connected to the mixing chamber. The cross-sectional area of ​​the mixing chamber perpendicular to the first direction decreases in the first direction away from the first housing, and the cross-sectional area of ​​the outlet chamber perpendicular to the first direction increases in the first direction away from the first housing.

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