High-pressure liquid injection air inlet control device and high-pressure liquid injection system
The high-pressure liquid inlet control device adjusts the flow port area, solves the problem of damage to the battery by the high-pressure air source, and improves the boost efficiency, achieving efficient production of battery manufacturing.
Patent Information
- Application Number
- CN202422349762.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-25
AI Technical Summary
In the prior art, high-pressure gas source is prone to damage the battery when injecting liquid into the battery, and the boosting efficiency is low during subsequent pressurization, resulting in low production efficiency.
A high-pressure liquid injection air intake control device is adopted, including a housing, valve core and pressure regulating valve. By adjusting the flow area of the flow port, the air flow rate in the initial stage is controlled and the flow area is increased in the subsequent stage to ensure the boost efficiency.
Prevent battery damage in the initial stage, while improving boost efficiency during subsequent boosting process to ensure battery quality and production efficiency.
Smart Images
Figure CN223049685U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery manufacturing, in particular to a high-pressure liquid injection air intake control device and a high-pressure liquid injection system. Background Art
[0002] During the liquid injection process of a battery, an equal-pressure liquid injection is usually realized by using a bell-type liquid injection machine. The bell static cavity of the bell-type liquid injection machine is directly connected to a high-pressure air source through a on-off valve. Before the liquid injection starts, the pressure in the bell static cavity is the atmospheric pressure. After the on-off valve is opened, high-pressure air flow will be transported from the high-pressure air source to the bell static cavity until the pressure in the bell static cavity reaches the preset liquid injection pressure. The higher the preset liquid injection pressure is, the higher the pressure of the high-pressure air source is required, the faster the liquid injection is, and the higher the production efficiency is. However, when the pressure of the high-pressure air source is too high, at the moment of pressurizing the bell static cavity, the sudden change of pressure in the bell static cavity will damage the battery. The air flow delivery port can be set smaller to control the air flow rate to prevent damage to the battery, but if the air flow delivery port is too small, it will affect the subsequent pressurization rate. During the subsequent pressurization process, the pressure difference will gradually decrease, and the flow rate of the high-pressure air flow will also decrease. If the air flow delivery port is too small, the air flow rate will be too low, affecting the overall pressure increase efficiency, resulting in low production efficiency of the battery. Summary of the Utility Model
[0003] An object of the utility model is to provide a high-pressure liquid injection air intake control device, which can prevent the battery from being damaged in the initial stage of pressurizing the bell static cavity and can ensure the pressure increase efficiency during the subsequent pressure increase process.
[0004] To achieve this purpose, the utility model adopts the following technical solutions:
[0005] Provide a high-pressure liquid injection air intake control device, including:
[0006] A housing, which has an adjustment cavity, a first cavity and a second cavity therein. There is a flow port between the first cavity and the second cavity. One of the first cavity and the second cavity is connected to the air source, and the other is connected to the bell static cavity. The adjustment cavity includes an upstream cavity and a downstream cavity arranged at intervals. The upstream cavity is connected to the air source, and the downstream cavity is connected to the bell static cavity;
[0007] A valve core, part of which is located in the adjustment cavity and part of which is located in the first cavity. The valve core can move under the pressure difference between the upstream cavity and the downstream cavity to adjust the flow area of the flow port;
[0008] A pressure regulating valve, which is arranged on the pipeline between the upstream cavity and the air source. The pressure regulating valve is used to adjust the pressure in the upstream cavity to a preset pressure;
[0009] When the pressure in the static chamber of the bell jar is less than the preset pressure, the valve core moves to block part of the flow port so that the flow area of the flow port is the preset minimum flow area. When the pressure in the static chamber of the bell jar is greater than the preset pressure, the valve core moves to increase the flow area of the flow port.
[0010] Optionally, it further includes an elastic diaphragm. The elastic diaphragm is laid in the adjustment chamber to divide the adjustment chamber into the upstream chamber and the downstream chamber. The elastic diaphragm is connected to the valve core.
[0011] Optionally, the middle part of the elastic diaphragm has a through hole, and the valve core is sealingly connected to the inner wall of the through hole.
[0012] Optionally, it further includes an adjusting member for adjusting the size of the preset minimum flow area.
[0013] Optionally, the adjusting member is screwed into the threaded hole on the side wall of the second chamber, and one end of the adjusting member is close to the flow port to limit the position of the valve core when blocking the flow port, so that the flow area of the flow port is not less than the preset minimum flow area. The other end of the adjusting member is located outside the housing to facilitate the rotation of the adjusting member.
[0014] Optionally, a first limiting groove is formed on the end face of the valve core close to the adjusting member, and the adjusting member can abut against the bottom of the first limiting groove;
[0015] Or a second limiting groove is formed on the end face of the adjusting member close to the valve core, and the valve core can abut against the bottom of the second limiting groove.
[0016] Optionally, the end of the valve core blocking the flow port has a frustum structure, the frustum structure is coaxially arranged with the flow port, and the side face of the frustum structure faces the second chamber.
[0017] Optionally, the diameter of the flow port remains unchanged along the axial direction of the flow port.
[0018] Optionally, it further includes a on-off valve. The second chamber is communicated with the gas source, and the on-off valve is arranged on the pipeline between the gas source and the second chamber.
[0019] Another object of the present invention is to provide a high-pressure liquid injection system, which can prevent the battery from being damaged in the initial stage of pressurizing the static chamber of the bell jar and can ensure the pressure increase efficiency in the subsequent pressure increase process.
[0020] To achieve this purpose, the present invention adopts the following technical solutions:
[0021] A high-pressure liquid injection system is provided, comprising the gas source, a bell jar and the high-pressure liquid injection air intake control device, wherein the bell jar has the bell jar static cavity.
[0022] Beneficial effects of the utility model:
[0023] The utility model provides a high-pressure liquid injection air intake control device, including a housing, a valve core and a pressure regulating valve. Among them, the housing has a regulating chamber, a first chamber and a second chamber, and a flow port is provided between the first chamber and the second chamber. One of the first chamber and the second chamber is connected to the gas source, and the other is connected to the bell jar static chamber. The regulating chamber includes an upstream chamber and a downstream chamber arranged at intervals, the upstream chamber is connected to the gas source, and the downstream chamber is connected to the bell jar static chamber. The valve core is partially located in the regulating chamber and partially located in the first chamber. The valve core can move under the pressure difference between the upstream chamber and the downstream chamber to adjust the flow area of the flow port. The pressure regulating valve is arranged on the pipeline between the upstream chamber and the gas source, and the pressure regulating valve is used to adjust the pressure in the upstream chamber to a preset pressure. In the initial stage of pressurization of the bell jar static chamber, the pressure in the bell jar static chamber is less than the preset pressure, and the valve core moves to block part of the flow port so that the flow area of the flow port is the preset minimum flow area, so as to reduce the flow of the high-pressure airflow and prevent the pressure difference from being too large to damage the battery in the bell jar static chamber. When the pressure in the bell jar static chamber continues to increase to a level greater than the preset pressure, the valve core moves to increase the flow area of the flow port. That is, as the bell jar static chamber continues to increase pressure, although the pressure difference between the gas source and the bell jar static chamber gradually decreases, the flow area of the high-pressure airflow at the flow port will increase, which can ensure the flow rate of the high-pressure airflow, improve the efficiency of the bell jar static chamber, and reduce the time consumption of pressure increase.
[0024] The utility model also provides a high-pressure liquid injection system, comprising an air source, a bell jar and the above-mentioned high-pressure liquid injection air intake control device, wherein the bell jar has a bell jar static chamber. The high-pressure liquid injection system can prevent the battery from being damaged in the initial stage of pressurizing the bell jar static chamber, and can ensure the boosting efficiency in the subsequent boosting process. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a structural schematic diagram of a high-pressure liquid injection air intake control device and a bell jar provided in an embodiment of the utility model;
[0026] Figure 2 It is an assembly cross-sectional view of a high-pressure liquid injection air intake control device and a bell jar provided in an embodiment of the utility model.
[0027] In the figure:
[0028] 1. Shell; 101. First cavity; 102. Second cavity; 103. Upstream cavity; 104. Downstream cavity;
[0029] 2. valve core; 21. cone structure; 211. first limiting groove;
[0030] 3. Pressure regulating valve; 4. Elastic diaphragm; 5. Adjusting member; 6. On-off valve;
[0031] 800. Bell jar; 801. Bell jar static chamber. Specific embodiments
[0032] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the sake of description, only the parts related to the present utility model are shown in the drawings, rather than all of them.
[0033] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, or a detachable connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0034] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact of the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is at a lower horizontal height than the second feature.
[0035] The liquid injection process of the battery usually realizes isobaric liquid injection by using a bell-type liquid injection machine. The bell static chamber of the bell-type liquid injection machine is directly connected to the high-pressure gas source through an on-off valve. Before the liquid injection starts, the pressure in the bell static chamber is the atmospheric pressure. After the on-off valve is opened, high-pressure air flow is transported from the high-pressure gas source to the bell static chamber until the pressure in the bell static chamber reaches the preset liquid injection pressure. The higher the preset liquid injection pressure, the higher the pressure of the high-pressure gas source required, the faster the liquid injection, and the higher the production efficiency. However, when the pressure of the high-pressure gas source is too high, at the moment of pressurizing the bell static chamber, the sudden change in pressure in the bell static chamber will damage the battery. The air flow delivery port can be set smaller to control the air flow rate to prevent damage to the battery, but if the air flow delivery port is too small, it will affect the subsequent pressurization rate. During the subsequent pressurization process, the pressure difference will gradually decrease, and the flow rate of the high-pressure air flow will also decrease. If the air flow delivery port is too small, the air flow rate will be too low, affecting the overall pressure increase efficiency, resulting in low production efficiency of the battery.
[0036] To solve the above problems, this embodiment provides a high-pressure liquid injection air intake control device, which can prevent the battery from being damaged in the initial stage of pressurizing the bell static chamber and can ensure the pressure increase efficiency during the subsequent pressure increase process.
[0037] As Figure 1 - Figure 2 shown, the high-pressure liquid injection air intake control device of this embodiment includes a housing 1, a valve core 2 and a pressure regulating valve 3. Among them, the housing 1 has an adjustment chamber, a first chamber 101 and a second chamber 102. There is a communication port between the first chamber 101 and the second chamber 102. One of the first chamber 101 and the second chamber 102 is connected to a gas source (not shown in the figure), and the other is connected to the bell static chamber 801. The adjustment chamber includes an upstream chamber 103 and a downstream chamber 104 arranged at intervals. The upstream chamber 103 is connected to the gas source, and the downstream chamber 104 is connected to the bell static chamber 801. The valve core 2 is partially located in the adjustment chamber and partially located in the first chamber 101. The valve core 2 can move under the pressure difference between the upstream chamber 103 and the downstream chamber 104 to adjust the flow area of the communication port. The pressure regulating valve 3 is arranged on the pipeline between the upstream chamber 103 and the gas source. The pressure regulating valve 3 is used to adjust the pressure in the upstream chamber 103 to a preset pressure.
[0038] In the initial stage of pressurization of the bell jar static chamber 801, the pressure in the bell jar static chamber 801 is less than the preset pressure, and the valve core 2 moves to block part of the flow port so that the flow area of the flow port is the preset minimum flow area, so as to reduce the flow of the high-pressure airflow and prevent the pressure difference from being too large to damage the battery in the bell jar static chamber 801. When the pressure in the bell jar static chamber 801 continues to increase until the pressure in the bell jar static chamber 801 is greater than the preset pressure, the valve core 2 moves to increase the flow area of the flow port. That is, as the bell jar static chamber 801 continues to increase in pressure, although the pressure difference between the gas source and the bell jar static chamber 801 gradually decreases, the flow area of the high-pressure airflow at the flow port will increase, which can ensure the flow of the high-pressure airflow, improve the pressure-increasing efficiency in the bell jar static chamber 801, and reduce the time-consuming pressure-increasing. In addition, the pressure in the situation where the flow area is maintained at the preset minimum flow area to the inflection point where it begins to increase can be adjusted by the pressure regulating valve 3. That is, the best inflection point pressure value can be obtained through multiple tests, and the best balance can be sought between preventing battery damage and improving boost efficiency to ensure battery quality and production efficiency.
[0039] like Figure 2 As shown, optionally, the high-pressure liquid injection air intake control device further includes an elastic diaphragm 4, which is laid in the regulating chamber to divide the regulating chamber into an upstream chamber 103 and a downstream chamber 104, and the elastic diaphragm 4 is connected to the valve core 2. Optionally, the middle of the elastic diaphragm 4 has a through hole, and the valve core 2 is sealed and connected to the inner wall of the through hole. When there is a pressure difference between the upstream chamber 103 and the downstream chamber 104, the middle of the elastic diaphragm 4 will bulge toward the side with smaller pressure, which can drive the valve core 2 in the middle to move together.
[0040] Optionally, the elastic diaphragm 4 is coaxially arranged with the valve core 2, and the valve core 2 moves along its own axial direction. The elastic diaphragm 4 also has the function of limiting the position of the valve core 2, which is conducive to ensuring that the end of the valve core 2 connected to the elastic diaphragm 4 moves along its own axial direction. Optionally, a guide hole is also provided in the housing 1, and the rod-shaped part of the valve core 2 is movably inserted in the guide hole. The elastic diaphragm 4 and the guide hole can achieve two-point limit, further ensuring that the valve core 2 moves along its own axial direction without angular deflection.
[0041] Optionally, the valve core 2 has a force-bearing end at one end of the regulating chamber. The cross-section of the force-bearing end is larger and will also be affected by the pressure difference force between the upstream chamber 103 and the downstream chamber 104, thereby achieving the effect of the pressure difference force between the upstream chamber 103 and the downstream chamber 104 pushing the valve core 2 to move.
[0042] To achieve the purpose that the valve core 2 gradually disengages from the flow port, increasing the flow area of the flow port, optionally, the end of the valve core 2 blocking the flow port has a frustum structure 21. The frustum structure 21 is coaxially arranged with the flow port, and the side surface of the frustum structure 21 faces the second chamber 102, that is, the small-diameter end surface of the frustum structure 21 is close to the second chamber 102. The total area of the gaps between the port of the flow port near the first chamber 101 and the side surface of the above frustum structure 21 is the flow area. As the valve core 2 gradually disengages from the flow port, the cross-section of the frustum structure 21 at the plane of the port of the flow port near the first chamber 101 gradually decreases, the gap gradually increases, and the flow area will gradually increase, and the flow rate of the high-pressure air flow will increase. That is, as the pressure in the bellows static chamber 801 gradually increases, the pressure in the downstream chamber 104 gradually increases, the pressure difference between the downstream chamber 104 and the upstream chamber 103 gradually increases, the reverse deformation of the elastic diaphragm 4 will gradually increase, the position of the valve core 2 will gradually move upward, and the flow area will gradually increase. That is, as the pressurization process progresses, the pressure difference between the gas source pressure and the pressure in the bellows static chamber 801 gradually decreases, but the flow area of the high-pressure gas will gradually increase to ensure the pressure increase rate.
[0043] Optionally, the diameter of the flow port remains unchanged along the axial direction of the flow port, which is convenient for processing. To further reduce the processing difficulty of the housing 1, the housing 1 includes an adjusting housing, a transition housing, and a flow housing connected in sequence. The adjusting chamber is located in the adjusting housing, the guiding hole is located on the transition housing, and the first chamber 101 and the second chamber 102 are located in the flow housing. The two ends of the transition housing are respectively screwed to the adjusting housing and the flow housing.
[0044] Optionally, the high-pressure liquid injection air inlet control device further includes an adjusting member 5 for adjusting the size of the preset minimum flow area. Optionally, the adjusting member 5 is screwed into the threaded hole on the side wall of the second chamber 102, and one end of the adjusting member 5 is close to the flow port to limit the position of the valve core 2 when blocking the flow port, so that the flow area of the flow port is not less than the preset minimum flow area. The other end of the adjusting member 5 is located outside the housing 1 for easy rotation of the adjusting member 5. The length direction of the adjusting member 5 coincides with the axial direction of the valve core 2. By rotating the adjusting member 5, the length of the adjusting member 5 located in the second chamber 102 can be adjusted. One end of the adjusting member 5 can abut against the end surface of the valve core 2 to prevent the valve core 2 from further blocking the flow port. When the valve core 2 abuts against the adjusting member 5, the flow area of the flow port is the preset minimum flow area, and by rotating the adjusting member 5, the preset minimum flow area can be adjusted.
[0045] To prevent the valve core 2 or the adjusting member 5 from tilting, resulting in the two no longer being coaxial and the flow area not meeting the preset minimum flow area. Optionally, in this embodiment, a first limiting groove 211 is formed on the end surface of the valve core 2 close to the adjusting member 5. The adjusting member 5 can abut against the bottom of the first limiting groove 211, and the side wall of the first limiting groove 211 can limit the tilting of the adjusting member 5. In other embodiments, a second limiting groove can also be formed on the end surface of the adjusting member 5 close to the valve core 2. The valve core 2 can abut against the bottom of the second limiting groove, that is, the valve core 2 can limit the tilting of the adjusting member 5 by abutting against the side wall of the second limiting groove.
[0046] To control the start and stop of the pressurization process, optionally, the high-pressure liquid injection air intake control device further includes a on-off valve 6. The second chamber 102 is communicated with the gas source, and the on-off valve 6 is arranged on the pipeline between the gas source and the second chamber 102.
[0047] When it is necessary to pressurize the bell jar static chamber 801, at this time, the adjusting member 5 completely disengages from the flow port. First, the on-off valve 6 is opened. The pressure in the upstream chamber 103 is the same as that of the gas source. The elastic diaphragm 4 deforms under the action of the pressure difference, and the valve core 2 moves to completely block the flow port. Then, the pressure regulating valve 3 is adjusted according to the design so that the pressure in the upstream chamber 103 is the preset pressure. Optionally, the preset pressure is less than or equal to 0.3 MPa. The adjusting member 5 is rotated to push open the valve core 2 so that the flow area is the preset minimum flow area, and the flow rate of the high-pressure gas flow in the initial stage is controlled to avoid damage to the battery in the bell jar static chamber 801 caused by the impact of a large flow rate of high-pressure gas flow. As the pressure in the bell jar static chamber 801 gradually increases, the pressure in the downstream chamber 104 also increases accordingly until the pressure in the downstream chamber 104 is higher than the preset pressure, that is, the pressure in the downstream chamber 104 is higher than the pressure in the upstream chamber 103. The elastic diaphragm 4 deforms reversely under the action of the pressure difference, and the valve core 2 moves in the direction away from the flow port accordingly. And as the pressure difference gradually increases, the deformation amount of the elastic diaphragm 4 gradually increases, the valve core 2 gradually moves, and the flow area of the flow port gradually increases to increase the flow rate of the high-pressure gas flow, so as to ensure the pressure increase rate in the subsequent stage with a smaller pressure difference.
[0048] This embodiment also provides a high-pressure liquid injection system, including a gas source, a bell jar 800 and the above-mentioned high-pressure liquid injection air intake control device. The bell jar 800 has a bell jar static chamber 801, and the battery to be injected with liquid is arranged in the bell jar static chamber 801. This high-pressure liquid injection system can prevent the battery from being damaged in the initial stage of pressurizing the bell jar static chamber 801, and can ensure the pressure increase efficiency in the subsequent pressure increase process, thereby ensuring the battery quality and improving the battery manufacturing efficiency.
[0049] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.
Claims
1. High-pressure liquid injection air intake control device, characterized in that: include: A shell (1), wherein the shell (1) has a regulating chamber, a first chamber (101) and a second chamber (102), a flow port is provided between the first chamber (101) and the second chamber (102), one of the first chamber (101) and the second chamber (102) is connected to an air source, and the other is connected to a bell-shaped static chamber (801), the regulating chamber comprises an upstream chamber (103) and a downstream chamber (104) which are arranged at intervals, the upstream chamber (103) is connected to the air source, and the downstream chamber (104) is connected to the bell-shaped static chamber (801); a valve core (2), wherein the valve core (2) is partially located in the regulating chamber and partially located in the first chamber (101), and the valve core (2) is capable of moving under the action of the pressure difference between the upstream chamber (103) and the downstream chamber (104) to adjust the flow area of the flow port; a pressure regulating valve (3), the pressure regulating valve (3) being arranged on a pipeline between the upstream chamber (103) and the gas source, the pressure regulating valve (3) being used to adjust the pressure in the upstream chamber (103) to a preset pressure; When the pressure in the bell jar static chamber (801) is lower than the preset pressure, the valve core (2) moves to the blocked portion of the flow port so that the flow area of the flow port is the preset minimum flow area. When the pressure in the bell jar static chamber (801) is higher than the preset pressure, the valve core (2) moves to increase the flow area of the flow port.
2. The high-pressure liquid injection air intake control device according to claim 1, characterized in that: It also comprises an elastic diaphragm (4), wherein the elastic diaphragm (4) is laid in the regulating chamber to divide the regulating chamber into the upstream chamber (103) and the downstream chamber (104), and the elastic diaphragm (4) is connected to the valve core (2).
3. The high-pressure liquid injection air intake control device according to claim 2, characterized in that: The elastic diaphragm (4) has a through hole in the middle, and the valve core (2) is sealed and connected to the inner wall of the through hole.
4. The high-pressure liquid injection air intake control device according to claim 1, characterized in that: It also comprises an adjusting member (5), wherein the adjusting member (5) is used to adjust the size of the preset minimum flow area.
5. The high-pressure liquid injection air intake control device according to claim 4, characterized in that: The adjusting member (5) is screwed to a threaded hole on the side wall of the second chamber (102), and one end of the adjusting member (5) is close to the flow port to limit the position of the valve core (2) when blocking the flow port, so that the flow area of the flow port is not less than the preset minimum flow area. The other end of the adjusting member (5) is located outside the housing (1) to facilitate the rotation of the adjusting member (5).
6. The high-pressure liquid injection air intake control device according to claim 4, characterized in that: A first limiting groove (211) is provided on the end surface of the valve core (2) close to the adjusting member (5), and the adjusting member (5) can abut against the bottom of the first limiting groove (211); Alternatively, a second limiting groove is provided on the end surface of the regulating member (5) close to the valve core (2), and the valve core (2) can abut against the bottom of the second limiting groove.
7. The high-pressure liquid injection air intake control device according to any one of claims 1 to 5, characterized in that: The end of the valve core (2) that blocks the flow port has a frustum structure (21), the frustum structure (21) is coaxially arranged with the flow port, and the side surface of the frustum structure (21) faces the second cavity (102).
8. The high-pressure liquid injection air intake control device according to claim 7, characterized in that: The diameter of the flow opening remains unchanged along the axial direction of the flow opening.
9. The high-pressure liquid injection air intake control device according to any one of claims 1 to 5, characterized in that: It also includes an on-off valve (6), the second chamber (102) is connected to the gas source, and the on-off valve (6) is arranged on a pipeline between the gas source and the second chamber (102).
10. High pressure liquid injection system, characterized in that: It comprises the gas source, a bell jar (800) and the high-pressure liquid injection air intake control device according to any one of claims 1 to 9, wherein the bell jar (800) has the bell jar static chamber (801) therein.