An air intake throttle valve and engine

Abstract

The application discloses an air intake throttle valve and an engine. The air intake throttle valve comprises a throttle valve body and a valve core assembly. The throttle valve body has a throttle valve cavity, and the valve core assembly is arranged in the throttle valve cavity. An inner wall of the throttle valve cavity is provided with a liquid collecting groove. The liquid collecting groove is located upstream of the valve core assembly along an airflow direction. One end of the liquid collecting groove is an open end in communication with the throttle valve cavity. The liquid collecting groove is provided with an anti-overflow structure. The inner wall of the throttle valve cavity is provided with the liquid collecting groove, and the liquid collecting groove is arranged upstream of the valve core assembly. When liquid water in an engine intake pipeline enters the air intake throttle valve along with engine intake air, at least part of the liquid water enters the liquid collecting groove, so that the liquid entering a gap between the valve core assembly and the throttle valve cavity is reduced. Even when there is a risk of icing in a low-temperature environment, the risk of air intake throttle valve jamming caused by icing can be reduced.

Description

Technical Field

[0001] This application relates to the field of engine technology, and more specifically, to an intake throttle valve and an engine. Background Technology

[0002] An intake throttle valve is a butterfly valve whose opening is controlled by the internal combustion engine ECU (electronic control unit). It is usually installed in the intake manifold of the internal combustion engine. When the load on the internal combustion engine increases, the opening of the intake throttle valve needs to be increased to meet the demand for more air and fuel. When the load on the internal combustion engine decreases or during the warm-up phase, the opening of the intake throttle valve needs to be decreased to reduce the demand for air and fuel.

[0003] like Figure 1 and Figure 2 As shown, a traditional intake throttle valve includes a motor 1, a valve shaft 2, and a throttle valve 3. The motor 1 receives control signals from the engine ECU and controls the throttle valve 3 to change the flow area, thereby altering the intake airflow and pressure. Gas flows in from the pipe connection section before the throttle valve, passes through the throttle valve 3, and then flows into the engine intake manifold.

[0004] like Figures 3-5 As shown, because the motor 1 needs to control the rotation of the valve disc shaft 2, there is a gap 4 between the valve disc shaft 2 and the mounting hole of the valve body in the intake throttle valve. Existing intake systems, such as... Figure 6 As shown, the engine intake air enters the intake throttle valve 01 through the pre-valve pipe, and then enters the engine intake manifold through the intake pipe 02 before entering the engine cylinder head to participate in combustion.

[0005] When the turbocharger in an engine compresses air, the impeller does work on the gas, causing its temperature to rise (to approximately 100°C or higher). To lower the gas temperature and increase the intake pressure, the compressed gas passes through an intercooler for cooling. When the temperature of the cooled gas is below the air saturation point, water in the air condenses and precipitates as liquid water. Therefore, under certain conditions, liquid condensate will exist in the engine's intake manifold.

[0006] When the ambient temperature is low, there is a risk of liquid freezing in the engine intake manifold. If the freezing occurs in the valve plate gap or valve plate shaft gap (e.g., gap 4), it can cause the intake throttle valve to become stuck. A stuck intake throttle valve means the throttle valve opening is not controlled by the ECU, preventing proper engine performance control and leading to problems such as excessive exhaust temperature and emissions exceeding standards.

[0007] Therefore, how to reduce the risk of intake throttle valve sticking due to icing is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0008] In view of this, the purpose of this application is to provide an intake throttle valve to reduce the risk of intake throttle valve jamming due to icing;

[0009] Another object of this application is to provide an engine having the above-mentioned intake throttle valve.

[0010] To achieve the above objectives, this application provides the following technical solution:

[0011] The first aspect of this application provides an intake throttle valve, including a throttle valve body and a valve core assembly, wherein the throttle valve body has a throttle valve cavity, and the valve core assembly is disposed within the throttle valve cavity;

[0012] The inner wall of the throttle valve cavity is provided with a liquid collection groove, and along the airflow direction, the liquid collection groove is located upstream of the valve core assembly. One end of the liquid collection groove is an open end that communicates with the throttle valve cavity, and the liquid collection groove is provided with an anti-overflow structure.

[0013] In one possible implementation, the valve core assembly includes a valve disc shaft and a throttling valve disc fixed on the valve disc shaft, with both ends of the valve disc shaft rotatably disposed on the inner wall of the throttling valve cavity;

[0014] There is at least one liquid collection tank, and at least one of the liquid collection tanks is arranged corresponding to the lower end of the valve disc shaft.

[0015] In one possible implementation, the liquid collection tanks are arranged at both ends of the valve disc shaft.

[0016] In one possible implementation, the liquid collection tank arranged corresponding to the end of the valve disc shaft is the target liquid collection tank, and the cross-section of the throttle valve cavity is the valve cavity cross-section.

[0017] The projection of the valve disc shaft onto the valve cavity cross-section is the first projection, and the projection of the open end of the target liquid collection tank onto the valve cavity cross-section is the second projection. The width range of the second projection covers the width range of the first projection.

[0018] In one possible implementation, the diameter of the valve disc shaft is D, and the width of the opening end of the target liquid collection tank is L, then D≤L≤1.5D.

[0019] In one possible implementation, there is at least one liquid collection tank, and at least one of the liquid collection tanks is located at the bottom of the throttle valve chamber.

[0020] In one possible implementation, the liquid collection tank is one;

[0021] or,

[0022] The liquid collection tanks are multiple ones arranged at intervals along the airflow direction;

[0023] or,

[0024] The liquid collection tanks are multiple ones arranged at intervals along the circumferential direction of the throttle valve cavity.

[0025] In one possible implementation, the anti-overflow structure includes a vortex forming section and is disposed at one end away from the opening end, wherein the end of the vortex forming section away from the opening end is a closed anti-overflow end.

[0026] In one possible implementation, the vortex-forming section bends upward, downward, or horizontally along the direction from the opening end of the throttle valve cavity to the overflow prevention end.

[0027] In one possible implementation, the bending angle of the vortex-forming section is not less than 180°.

[0028] In one possible implementation, the liquid collection tank includes an inflow section communicating with the open end of the liquid collection tank, the inflow section being arranged at an angle along the airflow direction;

[0029] The end of the inflow section closest to the opening is the first end, and the end furthest from the opening is the second end. The first end of the inflow section is closer to the upstream of the airflow direction than the second end.

[0030] In one possible implementation, the angle θ between the inflow section and the airflow direction is 40°-65°.

[0031] In one possible implementation, the liquid collection tank further includes a buffer section connected to the end of the inflow section away from the opening end.

[0032] In one possible implementation, the buffer section extends parallel to the airflow direction.

[0033] In one possible implementation, the liquid collection tank has a rounded corner structure on the upstream side along the airflow direction and a sharp corner structure on the downstream side.

[0034] The intake throttle valve provided in this application has a liquid collection groove on the inner wall of the throttle valve chamber, which is located upstream of the valve core assembly. When liquid water in the engine intake pipe enters the intake throttle valve along with the engine intake air, at least a portion of the liquid water will enter the liquid collection groove upstream of the valve core assembly. This reduces the amount of liquid entering the gap between the valve core assembly and the throttle valve chamber, thus reducing the risk of intake throttle valve jamming even in low-temperature environments where there is a risk of icing.

[0035] A second aspect of this application provides an engine including an intake throttle valve as described in any of the preceding claims.

[0036] The engine provided in this application has the aforementioned intake throttle valve, and therefore possesses all the technical effects of the aforementioned intake throttle valve, which will not be repeated here. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the structure of an intake throttle valve in the prior art at a certain angle;

[0039] Figure 2 This is a schematic diagram of the structure of an intake throttle valve in the prior art from another angle.

[0040] Figure 3 This is a front view of an intake throttle valve in the prior art;

[0041] Figure 4 for Figure 3 Sectional view along AA;

[0042] Figure 5 This is a partial enlarged view of the valve disc shaft connection in the prior art;

[0043] Figure 6 This is an assembly diagram of the intake throttle valve and intake manifold in the prior art;

[0044] Figure 7 This is a diagram showing the airflow path of the intake throttle valve and EGR intake pipe in the prior art.

[0045] Figure 8 This is a schematic diagram of an intake throttle valve in the prior art at a certain angle;

[0046] Figure 9 This is a schematic diagram of the intake throttle valve disclosed in the embodiments of this application;

[0047] Figure 10 for Figure 9 Sectional view along line AA;

[0048] Figure 11 for Figure 9 Sectional view along line BB;

[0049] Figure 12 This is a partial enlarged view of the intake throttle valve disclosed in the embodiments of this application at the liquid collection tank;

[0050] Figure 13 This is a flow diagram of the liquid in the liquid collection tank disclosed in the embodiments of this application.

[0051] The meanings of the various reference numerals in the figure are as follows:

[0052] 1-Motor; 2-Valve shaft; 3-Throttle valve; 4-Clearance;

[0053] 01-Intake throttle valve; 02-Intake connector; 03-EGR intake pipe;

[0054] 101-Drive device; 102-Throttle valve plate; 103-Valve plate shaft; 104-Throttle valve body; 105-Pipeline connection section before valve; 106-Throttle valve cavity; 107-Liquid collection tank; 1071-Inflow section; 1072-Buffer section; 1073-Vortex forming section; 1074-Rounded corner structure; 1075-Sharp corner structure. Detailed Implementation

[0055] This application discloses an intake throttle valve to reduce the risk of intake throttle valve jamming due to icing;

[0056] This application also discloses an engine having the above-described intake throttle valve.

[0057] Hereinafter, embodiments will be described with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the application as described in the claims. Additionally, the complete composition represented in the embodiments below is not limited to what is necessary as the solution to the application described in the claims. It should be noted that, for ease of description, only the parts relevant to the application are shown in the drawings. Unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0058] When the ambient temperature is low, there is a risk of liquid freezing in the engine intake manifold. If the freezing occurs in the valve plate gap or valve plate shaft gap, it can cause the intake throttle valve to become stuck. A stuck intake throttle valve means the throttle valve opening is no longer controlled by the ECU, preventing proper engine performance control and leading to problems such as excessive exhaust temperature and emissions exceeding standards.

[0059] like Figure 7 As shown, in EGR engines, an EGR intake pipe 03 is installed in the intake manifold. When the intake throttle valve 01 is closed, the EGR exhaust gas is drawn back to the area around the intake throttle valve 01 and mixes with the liquid in the intake manifold. This can easily corrode the non-metallic parts of the intake throttle valve 01, causing it to malfunction and increasing the risk of it sticking.

[0060] Based on this, this application discloses an intake throttle valve to reduce the risk of intake throttle valve jamming due to icing. Figure 9 and Figure 10 As shown, the intake throttle valve disclosed in this application includes a throttle valve body 104 and a valve core assembly. The valve core assembly can be driven by a drive device 101 to control the opening degree of the intake throttle valve. It should be noted that the drive device 101 can be a motor, which drives the valve core assembly to rotate, thereby adjusting the opening degree.

[0061] The throttle valve body 104 has a throttle valve cavity 106, and the valve core assembly is disposed in the throttle valve cavity 106. The throttle valve body 104 has a valve front pipeline connection section 105, through which air flows into the throttle valve cavity 106, and after passing through the valve core assembly, flows into the engine intake manifold.

[0062] The inner wall of the throttle valve cavity 106 is provided with a liquid collection groove 107, and along the airflow direction, the liquid collection groove 107 is located upstream of the valve core assembly, so that the airflow carrying liquid first passes through the liquid collection groove 107 and then passes through the valve core assembly.

[0063] One end of the liquid collection tank 107 is an open end communicating with the valve chamber 106 of the throttle valve, and the liquid collection tank 107 is provided with an anti-overflow structure. Liquid passing through the liquid collection tank 107 enters the interior through the open end of the liquid collection tank 107, and with the help of airflow, the liquid water flows downstream from the open end and remains within the liquid collection tank 107. The anti-overflow structure of the liquid collection tank 107 prevents liquid from easily flowing out of the liquid collection tank 107. During vehicle maintenance, the operator can remove the intake throttle valve and pour out the liquid collected in the liquid collection tank 107 to maintain the effective volume of the liquid collection tank 107, allowing for temporary storage of liquid in the next maintenance cycle. The shape of the open end can be polygonal, circular, elliptical, etc.; this embodiment does not limit the shape of the open end.

[0064] In summary, the intake throttle valve disclosed in this application has a liquid collection groove 107 on the inner wall of the throttle valve cavity 106, and the liquid collection groove 107 is arranged upstream of the valve core assembly. When liquid water in the engine intake pipe enters the intake throttle valve along with the engine intake air, at least a portion of the liquid water will enter the liquid collection groove 107 upstream of the valve core assembly. This reduces the amount of liquid entering the gap between the valve core assembly and the throttle valve cavity 106, thus reducing the risk of intake throttle valve jamming even in low-temperature environments where there is a risk of icing. It also reduces the probability of liquid mixed with EGR exhaust gas contacting non-metallic parts such as the valve disc shaft sealing ring, reducing the risk of contact with non-metallic parts when viewed from above.

[0065] like Figure 8 As shown in the prior art, in order to reduce the gap between the valve plate shaft 2 and the shaft hole of the intake throttle valve when the liquid enters the intake pipeline, the traditional intake throttle valve requires the engine design engineer to arrange the valve plate shaft 2 horizontally. The installation angle between the valve plate shaft 2 and the horizontal plane cannot exceed ±α°, and α° is generally taken as about 20°.

[0066] Because the intake throttle valve's drive unit is relatively large, its placement must consider avoiding interference with other engine components. However, considering the risks of the throttle valve sticking or failing, the valve shaft 2 can only be placed horizontally. This limits the adjustable position of the drive unit, increasing the difficulty of arranging the intake throttle valve.

[0067] Therefore, to reduce the difficulty of arranging the intake throttle valve, it is necessary to reduce the installation angle requirement of the valve disc shaft. In a specific embodiment of this application, as... Figure 11As shown, the valve core assembly includes a valve disc shaft 103 and a throttling valve disc 102 fixed on the valve disc shaft 103. The two ends of the valve disc shaft 103 are rotatably disposed on the inner wall of the throttling valve cavity 106. By driving the valve disc shaft 103 to rotate through the driving device 101, the throttling valve disc 102 can be driven to rotate, thereby changing the opening value.

[0068] There is at least one liquid collection tank 107, and at least one of the liquid collection tanks 107 is arranged corresponding to the lower end of the valve plate shaft 103. In this embodiment, the specific number of liquid collection tanks 107 is not limited; only one liquid collection tank 107 or multiple liquid collection tanks 107 may be provided.

[0069] When only one liquid collection tank 107 is provided, it is positioned at the end corresponding to the lower end of the valve shaft 103. When multiple liquid collection tanks 107 are provided, at least one of them is positioned at the end corresponding to the lower end of the valve shaft 103, while the other liquid collection tanks 107 can be positioned as needed. When one end of the valve shaft 103 is at the lowest position of the throttle valve chamber 106, the liquid collection tank 107 can intercept liquid that may enter the valve shaft gap. When the end of the valve shaft 103 is higher than the lowest position of the throttle valve chamber 106, a large amount of liquid flowing along the bottom of the liquid collection tank 107 will not flow through the end of the valve shaft 103 and therefore will not enter the valve shaft gap.

[0070] The liquid water released from the air system flows downstream along the wall of the intake throttle valve. Due to gravity, most of the liquid flows along the lower portion of the wall within the throttle valve cavity 106. In this embodiment, at least one liquid collection tank 107 is arranged corresponding to the lower end of the valve shaft 103. This ensures that liquid flowing through the lower end of the valve shaft 103 is intercepted and stored in the liquid collection tank 107. The higher end of the valve shaft 103, due to the smaller amount of liquid passing through, does not require a liquid collection tank 107 for interception. Alternatively, liquid collection tanks 107 can be arranged at both ends of the valve shaft 103.

[0071] In this embodiment, a liquid collection groove 107 is arranged upstream of the end of the valve shaft 103 to intercept the liquid entering the gap of the valve shaft 103. Therefore, the angle between the valve shaft 103 and the horizontal plane will not affect the liquid entering the gap of the valve shaft. This embodiment can meet the needs of engine designers for arbitrary angle arrangement of the intake throttle valve. That is, when designing the intake throttle valve, there is no need to pay attention to the installation angle of the valve shaft 103; only the interference between the drive device and other engine components needs to be considered, thus reducing the design difficulty. Even if there is liquid in the intake pipeline, the intake throttle valve will not experience reliability problems such as jamming or failure of action due to liquid freezing or corrosion of the valve shaft sealing ring.

[0072] In this embodiment, by arranging a liquid collection groove 107 at the corresponding position at the end of the valve disc shaft 103, liquid that may enter the gap between the valve disc shaft 103 and the valve cavity wall is intercepted in advance. This greatly reduces the amount of liquid entering the gap between the valve disc shaft 103 and the valve cavity wall, thereby preventing the valve disc shaft 103 from freezing in low-temperature environments and greatly reducing the risk of intake throttle valve jamming due to icing.

[0073] For ease of understanding, the liquid collection tank 107 arranged corresponding to the end of the valve plate shaft 103 is defined as the target liquid collection tank. The cross-section of the throttle valve cavity 106 is the valve cavity cross-section. Those skilled in the art will understand that the cross-section of the throttle valve cavity 106 is a cross-section perpendicular to the airflow direction. When the throttle valve cavity 106 is a cylindrical valve cavity, the cross-section of the throttle valve cavity 106 is a cross-section perpendicular to its axial direction.

[0074] The projection of the valve disc shaft 103 onto the valve cavity cross-section is the first projection, and the projection of the opening end of the target liquid collection tank onto the valve cavity cross-section is the second projection. The width range of the second projection covers the width range of the first projection. That is, the width of the opening end of the target liquid collection tank (width refers to the dimension of the opening end perpendicular to the airflow direction) can cover the valve disc shaft 103, so that all liquid that may flow into the gap of the valve disc shaft 103 can be intercepted by the target liquid collection tank, preventing liquid water flowing downstream along the edge of the opening end of the target liquid collection tank from entering the gap of the valve disc shaft 103.

[0075] like Figure 11 As shown, the diameter of the valve shaft 103 is D, and the width of the opening of the target liquid collection tank is L, then D≤L≤1.5D. That is, in this embodiment, the minimum width of the opening of the target liquid collection tank can be equal to the diameter of the valve shaft 103, or it can be greater than the diameter of the valve shaft 103. The maximum width of the opening of the target liquid collection tank can be designed to be 1.5 times the diameter of the valve shaft 103 to avoid the opening of the target liquid collection tank being too wide, which would affect the air resistance, strength, and service life of the intake throttle valve.

[0076] Those skilled in the art can design the distance between the opening end of the target liquid collection tank and the end of the valve disc shaft 103 according to the requirements. Without affecting the operation of the valve core assembly, the opening end of the target liquid collection tank can be arranged as close as possible to the end of the valve disc shaft 103 to improve the liquid interception efficiency and prevent the problem of reduced liquid interception rate due to the large distance between the two.

[0077] The liquid water released from the air system flows downstream along the wall of the intake throttle valve, and most of the liquid, due to gravity, generally moves forward with the gas along the bottom of the throttle valve cavity 106. In a specific embodiment of this application, there is at least one liquid collection tank 107, and at least one of the liquid collection tanks 107 is located at the bottom of the throttle valve cavity 106.

[0078] This embodiment does not limit the specific number of liquid collection tanks 107. It may be possible to set only one liquid collection tank 107 or multiple liquid collection tanks 107.

[0079] When only one liquid collection tank 107 is provided, it can be positioned at the lowest point of the throttle valve cavity 106. When multiple liquid collection tanks 107 are provided, at least one of them is positioned at the lowest point of the throttle valve cavity 106, while the other liquid collection tanks 107 can be positioned as needed. When the end of the valve shaft 103 is located at the lowest point of the throttle valve cavity 106, the liquid collection tank 107 can intercept liquid that may enter the valve shaft gap; when the end of the valve shaft 103 is higher than the lowest point of the throttle valve cavity 106, the amount of liquid is negligible due to the higher position of the valve shaft 103.

[0080] The liquid water released from the air system flows downstream along the wall of the intake throttle valve. Due to gravity, the liquid within the throttle valve chamber 106 is primarily located at the bottom and flows downstream. Because a liquid collection tank 107 is located at the very bottom of the throttle valve chamber 106, most of the liquid within the chamber is intercepted and stored there, preventing it from flowing through the valve core assembly and thus protecting it.

[0081] In summary, only one liquid collection tank 107 can be provided. This liquid collection tank 107 can be arranged at the bottom of the throttle valve cavity 106, or it can be arranged at the end of the throttle valve cavity 106 that corresponds to the lower end of the valve plate shaft 103.

[0082] Multiple liquid collection tanks 107 can be arranged, with each liquid collection tank 107 spaced apart along the airflow direction. For example, the multiple liquid collection tanks 107 arranged at intervals can all be arranged at the bottom of the throttle valve cavity 106, or the multiple liquid collection tanks 107 arranged at intervals can be arranged at the position corresponding to the lower end of the throttle valve cavity 106 with respect to the valve plate shaft 103, so as to improve the success rate of liquid interception.

[0083] Each liquid collection tank 107 can also be arranged at intervals along the circumference of the throttle valve cavity 106. For example, a liquid collection tank 107 can be arranged at the bottom of the throttle valve cavity 106, and a liquid collection tank 107 can also be arranged at the corresponding position at the end of the valve plate shaft 103. Of course, multiple liquid collection tanks 107 provided at the bottom of the throttle valve cavity 106 can also be arranged at intervals along the airflow direction; correspondingly, multiple liquid collection tanks 107 corresponding to the end of the valve plate shaft 103 can also be arranged at intervals along the airflow direction.

[0084] like Figure 12 and Figure 13 As shown in a specific embodiment of this application, the anti-overflow structure includes a vortex forming section 1073, which is disposed at the end away from the opening end. The end of the vortex forming section 1073 away from the opening end is a closed anti-overflow end. The vortex forming section 1073 is disposed at the end of the liquid collection tank 107, and the end of the vortex forming section 1073 away from the opening end is closed to prevent liquid from flowing out through the vortex forming section 1073.

[0085] Liquid entering the liquid collection tank 107 through the open end will enter the vortex forming section 1073 along the channel of the liquid collection tank 107, and form a vortex in the vortex forming section 1073. This allows the liquid to dissipate water flow energy by rotating in the vortex forming section 1073 when subjected to airflow pressure, thereby reducing the probability that the liquid will be blown out of the liquid collection tank 107 under airflow pressure.

[0086] It should be noted that the overflow prevention structure can also achieve the effect of preventing liquid overflow by increasing the depth and path of the liquid collection tank 107, and is not limited to the vortex forming section 1073 alone. For example, the overflow prevention structure may include a reversing structure (not shown in the figure), such as adding a reciprocating reversing section in the middle region of the liquid collection tank 107. Multiple reversing sections can prevent liquid overflow. The overflow prevention structure may also include a labyrinth trough section structure (not shown in the figure), which can also prevent liquid overflow.

[0087] Furthermore, along the direction from the opening end of the throttle valve cavity 106 to the overflow prevention end, the vortex forming section 1073 bends upward, downward, or horizontally. This embodiment does not limit the bending direction of the vortex forming section 1073. It should be noted that upward and downward bending do not only refer to vertical bending; that is, the center line of the bend can be parallel to the horizontal plane or form a certain angle with the horizontal plane, as long as the height of the liquid changes when flowing within the vortex forming section 1073 to dissipate fluid energy.

[0088] Of course, the vortex forming section 1073 can also be bent in the horizontal direction, that is, its center line of bending can be perpendicular to the horizontal plane. When the water flows in the vortex forming section 1073, its height will not change, as long as the water can rotate in the vortex forming section 1073.

[0089] To guide the water flow to rotate within the vortex-forming section 1073, the bending angle of the vortex-forming section 1073 is designed to be no less than 180°. Those skilled in the art will understand that after the liquid flows from the liquid collection tank 107 to the vortex-forming section 1073, it will flow along the inner wall of the outer edge of the vortex-forming section 1073 under centrifugal force. This inner wall is the inner wall away from the centerline of the vortex-forming section 1073. Therefore, as long as the bending angle of the inner wall of the outer edge of the vortex-forming section 1073 is not less than 180°, the water flow can be guided to rotate within the vortex-forming section 1073, preventing backflow and allowing overflow from the open end.

[0090] like Figure 12 As shown in a specific embodiment of this application, the liquid collection tank 107 includes an inflow section 1071 that communicates with the open end of the liquid collection tank 107. When the liquid flows through the open end of the liquid collection tank 107, it enters the inflow section 1071 through the open end and flows along the inflow section 1071 to the vortex forming section 1073. The vortex forming section 1073 guides the water flow to rotate, thereby consuming the energy of the water flow and air flow in the liquid collection tank 107 and preventing the water flow from overflowing.

[0091] The inflow section 1071 is arranged at an angle along the airflow direction, neither perpendicular nor parallel to the airflow direction. For ease of understanding, the end of the inflow section 1071 closest to the opening is defined as the first end, and the end furthest from the opening is defined as the second end. The first end of the inflow section 1071 is closer to the upstream of the airflow direction than the second end. This angled arrangement of the inflow section 1071 allows the liquid, after entering the opening of the liquid collection tank 107, to quickly pass through the inflow section 1071 under the pushing force of the airflow and flow towards the vortex forming section 1073. In other words, the angled arrangement of the inflow section 1071 utilizes the airflow pressure to enable the liquid to quickly flow towards the vortex forming section 1073 after entering the liquid collection tank 107.

[0092] like Figure 12 As shown, in this embodiment, the angle θ between the inflow section 1071 and the airflow direction is 40°-65°. If the angle θ between the inflow section 1071 and the airflow direction is too small, the depth of the inflow section 1071 for the same length will be insufficient, making it easy for liquid that has already entered the liquid collection tank 107 to flow out through the inflow section 1071 and the opening end. If the angle θ between the inflow section 1071 and the airflow direction is too large, the propulsive effect of the airflow will not be utilized, and the liquid that has already flowed to the opening end of the liquid collection tank 107 will be blown out of the opening end by the airflow, preventing the liquid from entering the inflow section 1071 and the vortex forming section 1073. Experiments have verified that controlling the angle θ between the inflow section 1071 and the airflow direction between 40°-65° can achieve a better liquid interception effect.

[0093] It should be noted that the angle θ between the inflow section 1071 and the airflow direction can also be other angles. As long as the angle between the inflow section 1071 and the airflow direction is acute, a better liquid interception effect can be obtained compared with setting the inflow section 1071 vertically or tilting the inflow section 1071 in the opposite direction.

[0094] To increase the difficulty of water flowing out of the liquid collection tank 107, the liquid collection tank 107 may further include a buffer section 1072. The buffer section 1072 is connected to the end of the inflow section 1071 away from the opening end, that is, the buffer section 1072 is disposed between the inflow section 1071 and the vortex forming section 1073. The liquid collection tank 107 disclosed in this embodiment adds a buffer section 1072 between the inflow section 1071 and the vortex forming section 1073. The buffer section 1072 has a certain length, which increases the total path of the liquid collection tank 107, thereby increasing the difficulty of water flowing out.

[0095] The extension direction of the buffer section 1072 is parallel to the airflow direction. Of course, the extension direction of the buffer section 1072 can also be designed in other directions, as long as it can increase the total path of the liquid collection tank 107. This embodiment does not limit the extension direction of the buffer section 1072.

[0096] To facilitate the entry of liquid into the liquid collection tank 107, in a specific embodiment of this application, as follows: Figure 12As shown, the liquid collection tank 107 has a rounded corner structure 1074 on the upstream side along the airflow direction and a sharp corner structure 1075 on the downstream side. The rounded corner structure 1074 is relatively smooth. When the gas carrying liquid passes through the opening end of the liquid collection tank 107, it first passes through the rounded corner structure 1074 and slides into the inflow section 1071 under the guiding effect of the rounded corner structure 1074. If the airflow carrying liquid has a large inertia and does not slide into the inflow section 1071 through the rounded corner structure 1074, it will continue to move downstream. However, during the movement of the liquid above the opening end, it will also be affected by gravity. Since it loses the support of the inner wall of the throttle valve cavity 106, it will have a downward displacement, that is, a displacement towards the inside of the opening end. When it moves to the downstream side of the opening end, it will be blocked by the sharp corner structure 1075, causing the liquid to fall into the inflow section 1071.

[0097] This application also discloses an engine that includes the intake throttle valve disclosed in the above embodiments. The engine disclosed in this application, having the aforementioned intake throttle valve, possesses all the technical effects of the aforementioned intake throttle valve, which will not be elaborated upon further here.

[0098] It should be noted that the engine can be a diesel engine, a gasoline engine, a gas engine (not limited to natural gas engines and hydrogen internal combustion engines), etc., and of course it can also be an engine that burns multiple fuels, including but not limited to engines that burn gasoline and methanol, engines that burn natural gas and hydrogen, etc.

[0099] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "a," and / or "the" are not specifically singular and may include the plural. Generally, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. An element defined by the phrase "comprising an..." does not exclude the presence of other identical elements in the process, method, product, or apparatus that includes the element.

[0100] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0101] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0102] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. An air intake throttle valve characterized by comprising: The throttle valve body (104) has a throttle valve cavity (106), and the valve core assembly is arranged in the throttle valve cavity (106); The inner wall of the throttle valve cavity (106) is provided with a liquid collecting groove (107), and the liquid collecting groove (107) is located upstream of the valve core assembly along the airflow direction, one end of the liquid collecting groove (107) is an open end in communication with the throttle valve cavity (106), and the liquid collecting groove (107) is provided with an anti-overflow structure.

2. The air inlet throttle valve according to claim 1, characterized in that, The valve core assembly comprises a valve plate shaft (103) and a throttle valve plate (102) fixed on the valve plate shaft (103), and both ends of the valve plate shaft (103) are rotatably arranged on the inner wall of the throttle valve cavity (106); At least one of the liquid collecting grooves (107) is arranged corresponding to the lower end of the valve plate shaft (103).

3. The air inlet throttle valve according to claim 2, wherein Both ends of the valve plate shaft (103) are arranged corresponding to the liquid collecting grooves (107).

4. The air inlet throttle valve of claim 2 wherein, The liquid collecting groove (107) arranged corresponding to the end of the valve plate shaft (103) is a target liquid collecting groove, and the cross section of the throttle valve cavity (106) is a valve cavity cross section; The projection of the valve plate shaft (103) on the valve cavity cross section is a first projection, the projection of the open end of the target liquid collecting groove on the valve cavity cross section is a second projection, and the width range of the second projection covers the width range of the first projection.

5. The air inlet throttle valve of claim 4, wherein The diameter of the valve plate shaft (103) is D, and the width of the open end of the target liquid collecting groove is L, then D≤L≤1.5D.

6. The air inlet throttle valve of claim 1 wherein, At least one of the liquid collecting grooves (107) is arranged at the bottom of the throttle valve cavity (106).

7. The air inlet throttle valve of claim 1 wherein, The liquid collecting groove (107) is one; Or, The liquid collecting grooves (107) are a plurality of grooves arranged at intervals along the airflow direction; Or, The liquid collecting grooves (107) are a plurality of grooves arranged at an interval along the circumferential direction of the throttle valve cavity (106).

8. The air inlet throttle valve according to any one of claims 1 to 7, characterized in that The anti-overflow structure comprises a vortex forming section (1073), and is arranged at one end away from the open end, and the end of the vortex forming section (1073) away from the open end is a closed anti-overflow end.

9. The air inlet throttle valve of claim 8, wherein The vortex forming section (1073) is curved upward, or downward, or horizontally along the direction from the open end to the anti-overflow end of the throttle valve cavity (106).

10. The air inlet throttle valve of claim 9, wherein The bending angle of the vortex forming section (1073) is not less than 180°.

11. The air inlet throttle valve according to any one of claims 1 to 7, characterized in that The liquid collecting groove (107) comprises an inflow section (1071) in communication with the open end of the liquid collecting groove (107), and the inflow section (1071) is arranged inclined along the airflow direction; The end of the inflow section (1071) close to the open end is a first end, and the end away from the open end is a second end, and the first end of the inflow section (1071) is closer to the upstream of the airflow direction than the second end.

12. The air inlet throttle valve of claim 11, wherein The inflow section (1071) has an angle θ of 40°-65° with the airflow direction.

13. The air inlet throttle valve of claim 11, wherein The liquid collection groove (107) further comprises a buffer section (1072) which is in communication with one end of the inflow section (1071) away from the open end.

14. The air inlet throttle valve of claim 13, wherein The extension direction of the buffer section (1072) is parallel to the airflow direction.

15. The air inlet throttle valve according to any one of claims 1 to 7, wherein The open end of the liquid collection groove (107) is provided with a rounded corner structure (1074) on the upstream side along the airflow direction and a sharp corner structure (1075) on the downstream side.

16. An engine characterized by, An air intake throttle valve comprising any one of claims 1-15.

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