Drain valve, intercooler and vehicle

Abstract

The application relates to a drain valve, an intercooler and a vehicle. The drain valve comprises a valve body and a valve core unit. The valve body comprises a liquid inlet, a first cavity, a liquid passage and a second cavity which are sequentially communicated, and the second cavity is provided with a liquid outlet communicated with the liquid passage and the atmosphere. The valve core unit comprises a first valve core arranged in the first cavity and a second valve core arranged in the second cavity. The valve core unit has an open state and a closed state. In the open state, the first valve core opens the liquid inlet, and the second valve core opens the liquid passage, so that the liquid inlet, the first cavity, the liquid passage and the liquid outlet are communicated. In the closed state, the first valve core blocks the liquid inlet and / or the second valve core blocks the liquid passage. The above-mentioned drain valve can reduce the possibility of impurities entering the intercooler while realizing water drainage, and is beneficial to meeting the cleanliness requirement of vehicle parts.

Description

Technical Field

[0001] This application relates to the field of drain valve technology, and in particular to a drain valve, an intercooler, and a vehicle. Background Technology

[0002] As a crucial component of engine turbochargers, the intercooler cools the high-temperature gases after turbocharging, thereby reducing the engine's thermal load. However, condensation can easily form on the hot gases after they are cooled by the intercooler, potentially affecting the engine's normal operation.

[0003] In related technologies, intercoolers are typically equipped with drain valves for discharging condensate. However, these drain valves are prone to accumulating dirt and grime during use, allowing dust and other impurities to easily enter the intercooler. This fails to meet the cleanliness requirements of vehicle components and affects the operation of both the intercooler and the engine. Summary of the Invention

[0004] Therefore, it is necessary to address the problem in related technologies where drain valves are prone to accumulating dirt and grime during use, allowing dust and other impurities to easily enter the intercooler and thus failing to meet the cleanliness requirements of vehicle components. A drain valve, intercooler, and vehicle that improve upon the aforementioned technical problems should be provided.

[0005] According to a first aspect of this application, embodiments of this application provide a drain valve, comprising:

[0006] The valve body includes an inlet, a first chamber, a through port, and a second chamber connected in sequence; the second chamber has an outlet connected to the through port and the atmosphere; and

[0007] The valve core unit includes a first valve core disposed in a first cavity and a second valve core disposed in a second cavity. The valve core unit has an open state and a closed state. In the open state, the first valve core opens the liquid inlet and the second valve core opens the liquid outlet, so that the liquid inlet, the first cavity, the liquid outlet and the liquid outlet are connected. In the closed state, the first valve core blocks the liquid inlet and / or the second valve core blocks the liquid outlet.

[0008] In one embodiment, the first valve core includes a pusher and a reset member connected to the valve body, and a first seal member disposed between the pusher and the reset member and movable within the first cavity. The pusher is used to apply a pushing force toward the reset member to the first seal member to open the liquid inlet, and the reset member is used to apply a resetting force toward the pusher member to the first seal member to block the liquid inlet.

[0009] In one embodiment, the pusher includes a push rod connected to a first seal and a housing sleeved on the push rod. The housing is filled with a filler that, when heated and expanded, can apply a pushing force toward the reset member to enable the push rod to move toward the reset member relative to the housing.

[0010] In one embodiment, the end of the housing away from the reset member is provided with multiple heat-conducting fins; and / or

[0011] The pusher also includes an isolation sleeve disposed within the housing to isolate the filler and the push rod, the isolation sleeve having an isolation cavity for inserting the push rod.

[0012] In one embodiment, the end of the second cavity away from the liquid outlet is an open end, which is used to allow high-pressure gas to flow into the second cavity;

[0013] The second valve core includes an elastic element connected to the valve body and a second sealing element connected to the elastic element and movable within the second cavity. The second sealing element can divide the second cavity into a first chamber communicating with an open end and a second chamber communicating with a liquid outlet. The elastic element is located in the first chamber and is used to apply an elastic force toward the open end to the second sealing element so that the second sealing element opens the liquid outlet. When the pressure applied to the second sealing element by the high-pressure gas flowing in from the open end is greater than the elastic force applied by the elastic element, the second sealing element blocks the liquid outlet.

[0014] In one embodiment, the side wall of the valve body is provided with a drain groove that connects the first chamber to the atmosphere.

[0015] In one embodiment, the second valve core further includes a limiting member connected to the valve body. The limiting member is disposed in the second chamber and is closer to the outlet than the liquid inlet. The limiting member has a through hole and is used to limit the position of the second seal in the second chamber.

[0016] In one embodiment, the drain valve further includes a liquid storage component fitted onto the valve body, the liquid storage component having a liquid storage chamber communicating with the liquid inlet.

[0017] According to a second aspect of this application, an embodiment of this application provides an intercooler, including an intercooler base and a drain valve as described in any of the above embodiments. The intercooler base is provided with a mounting hole, and the drain valve passes through the mounting hole and is connected to the wall of the mounting hole.

[0018] According to a third aspect of this application, an embodiment of this application provides a vehicle including the intercooler described above.

[0019] Through the above technical solution, the inlet, the first chamber, the outlet, and the second chamber are sequentially connected. The second chamber has an outlet connecting to the atmosphere and the outlet, thus forming a complete channel for liquid to flow in and out of the valve body. When the first valve core opens the inlet and the second valve core opens the outlet, the entire valve core unit is in the open state. Condensate in the intercooler can flow into the valve body from the inlet and, after flowing through the aforementioned channel, flow out to the atmosphere from the outlet, thereby discharging the condensate from the intercooler. This can, to a certain extent, prevent condensate from entering the engine, which is beneficial to improving the operating efficiency of the intercooler and the engine. When the first valve core blocks the inlet and / or the second valve core blocks the outlet, the entire valve core unit is in the closed state, thereby isolating the inner cavity of the intercooler from the outside world. This is beneficial to improving the sealing performance of the drain valve and reducing the possibility of impurities such as oil, dust, and particulate matter in the atmosphere entering the intercooler, which helps to meet the cleanliness requirements of vehicle parts. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the drain valve connected to the intercooler base in one embodiment of this application.

[0021] Figure 2 This is an exploded view of the drain valve connected to the intercooler base in one embodiment of this application.

[0022] Figure 3 This is a cross-sectional view of the valve body of the drain valve in one embodiment of this application.

[0023] Figure 4 This is a cross-sectional view of the first valve core of the drain valve in one embodiment of this application.

[0024] Explanation of reference numerals in the attached drawings: 100-Drain valve; 110-Valve body; 120-Valve core unit; 10-First valve core; 11-Pushing element; 111-Push rod; 112-Outer shell; 113-Filling material; 114-Heat-conducting fins; 115-Isolation sleeve; 12-Reset element; 13-First seal; 20-Second valve core; 21-Elastic element; 22-Second seal; 23-Limiting element; 130-Liquid storage element; 131-Liquid storage chamber; 200-Intercooler base; 210-Mounting hole; 1-Liquid inlet; 2-First chamber; 3-Liquid outlet; 4-Second chamber; 5-Liquid outlet; 6-Flow channel; 7-Open end; 8-Drain groove; 9-Limiting plate. Detailed Implementation

[0025] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0026] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0027] Furthermore, where the terms "first" and "second" appear, these terms are 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 with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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 or an electrical connection; 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 expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" 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. Similarly, "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.

[0030] It should be noted that if a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. If a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component. Where applicable, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation. "Inner" and "outer" refer to the inner and outer contours of the relevant component.

[0031] The intercooler is located between the engine's intake manifold and the turbocharger. The intercooler's gas pressure changes with the engine's operating state. For example, when the engine is stopped, the intercooler's gas pressure decreases; when the engine starts, the intercooler's gas pressure gradually increases. In related technologies, the structure of the intercooler's drain valve is typically designed using this gas pressure variation. For instance, the drain valve's core may include an elastic element and a sealing element. The elastic element applies an elastic force to the sealing element away from the drain outlet. When the intercooler's gas pressure rises to a level that overcomes the elastic force applied by the elastic element, the sealing element seals the drain outlet, i.e., the drain valve is in the closed state. When the intercooler's gas pressure drops to a level that cannot overcome the elastic force applied by the elastic element, the sealing element opens the drain outlet, i.e., the drain valve is in the open state.

[0032] However, since the engine stops running when the vehicle is stationary, the gas pressure in the intercooler is low, causing the drain valve to remain open for an extended period. Oil, dust, particulate matter, or other impurities in the atmosphere can easily enter the intercooler through the drain port, and subsequently the engine, leading to mechanical failure or wear. Therefore, the drain valve in this technology is prone to accumulating dirt and grime, allowing dust and other impurities to easily enter the intercooler, failing to meet the cleanliness requirements of vehicle parts and affecting the vehicle's operating condition.

[0033] Based on this, see Figures 1 to 4This application provides a drain valve 100, an intercooler having the drain valve 100, and a vehicle having the intercooler. The drain valve 100 is disposed on the intercooler base 200 and can automatically drain water according to the state of the intercooler, which can improve the automation of intercooler drainage, reduce the workload of operators, and the drain valve 100 can reduce the possibility of impurities entering the intercooler to a certain extent, which is conducive to meeting the cleanliness requirements of vehicle parts.

[0034] According to the first aspect of this application, see Figures 1 to 4 This application provides a drain valve 100, including a valve body 110 and a valve core unit 120. The valve body 110 includes an inlet 1, a first cavity 2, a through port 3, and a second cavity 4 connected in sequence. The second cavity 4 has an outlet 5 connected to the through port 3 and the atmosphere. The valve core unit 120 includes a first valve core 10 disposed in the first cavity 2 and a second valve core 20 disposed in the second cavity 4. The valve core unit 120 has an open state and a closed state. In the open state, the first valve core 10 opens the inlet 1 and the second valve core 20 opens the through port 3, so that the inlet 1, the first cavity 2, the through port 3, and the outlet 5 are connected. In the closed state, the first valve core 10 blocks the inlet 1 and / or the second valve core 20 blocks the through port 3.

[0035] Through the above technical solution, the inlet 1, the first chamber 2, the outlet 3, and the second chamber 4 are sequentially connected. The second chamber 4 has an outlet 5 that connects to the atmosphere and the outlet 3, thus forming a complete channel for liquid to flow into and out of the valve body 110. When the first valve core 10 opens the inlet 1 and the second valve core 20 opens the outlet 3, the valve core unit 120 is in the open state. The condensate in the intercooler can flow into the valve body 110 from the inlet 1 and, after flowing through the aforementioned channel, flow out to the atmosphere from the outlet 5, thereby discharging the condensate in the intercooler. This can, to a certain extent, prevent condensate from entering the engine, which is beneficial to improving the operating performance of the intercooler and the engine. When the first valve core 10 blocks the liquid inlet 1 and / or the second valve core 20 blocks the liquid outlet 3, the valve core unit 120 is in a closed state, which can isolate the inner cavity of the intercooler from the outside world, which is beneficial to improving the sealing performance of the drain valve 100, reducing the possibility of impurities such as oil, dust, and particulate matter in the atmosphere entering the intercooler, and helping to meet the cleanliness requirements of vehicle parts.

[0036] Compared with the related technology where the drain valve controls the opening and closing of the drain port through a single valve core, the drain valve 100 of this application has two valve cores. The intercooler is only connected to the atmosphere when the first valve core 10 opens the inlet port 1 and the second valve core 20 opens the outlet port 3. This reduces the possibility of impurities entering the intercooler while draining water, which is beneficial to meeting the cleanliness requirements of vehicle parts. In addition, the drain valve 100 of this application is easy to operate and has good sealing performance.

[0037] In some embodiments, see Figure 1 , Figure 2 and Figure 4 To achieve the sealing and opening of the inlet 1 by the first valve core 10, the first valve core 10 includes a pushing member 11 and a resetting member 12 connected to the valve body 110, and a first sealing member 13 disposed between the pushing member 11 and the resetting member 12 and movable within the first cavity 2. The pushing member 11 applies a pushing force toward the resetting member 12 to the first sealing member 13, thereby opening the inlet 1. The resetting member 12 applies a resetting force toward the pushing member 11 to the first sealing member 13, thereby sealing the inlet 1. The first sealing member 13 can move toward the resetting member 12 under the action of the pushing member 11, and can move toward the pushing member 11 under the action of the resetting member 12. That is, the first sealing member 13 can reciprocate within the first cavity 2, thereby controlling the opening and closing of the inlet 1.

[0038] In the above embodiments, see Figure 1 and Figure 4 The first sealing element 13 can be a piston sleeve, and the reset element 12 can be a reset spring. The piston sleeve can be fitted onto one end of the reset spring, and the end of the reset spring away from the piston sleeve can be connected to the valve body 110. A flow channel 6 connecting the liquid inlet 1 and the liquid outlet 3 can be formed between the pusher 11 of the first valve core 10 and the first sealing element 13. When the first sealing element 13 opens the liquid inlet 1, the liquid inlet 1 is connected to the flow channel 6, and vice versa.

[0039] In some embodiments, see Figure 1 , Figure 2 and Figure 4 The first valve core 10 may include a limiting piece 9 connected to the cavity wall of the first cavity 2. The limiting piece 9 is connected to the end of the reset member 12 away from the push member 11 to limit the position of the reset member 12 in the first cavity 2.

[0040] In some embodiments, see Figure 1 and Figure 4The pushing member 11 may include a push rod 111 connected to the first seal 13 and a housing 112 sleeved on the push rod 111. The housing 112 is provided with a filler 113. When the filler 113 is heated and expands, it can apply a pushing force to the push rod 111 toward the reset member 12, so that the push rod 111 can move relative to the housing 112 toward the reset member 12. Since the push rod 111 is connected to the first seal 13, the push rod 111 can drive the first seal 13 to move toward the reset member 12 in the first cavity 2, so that the first seal 13 can open the liquid inlet 1, and the flow channel 6 of the first valve core 10 can connect the liquid inlet 1 and the liquid outlet 3.

[0041] It is understandable that, in order to improve the sensitivity of the first valve core 10, a material whose volume is greatly affected by temperature and has a significant thermal expansion and contraction effect can be selected as the filler 113. This application does not limit the specific selection of the filler 113; in some embodiments, the filler 113 can be paraffin wax. When the ambient temperature rises, the volume of the filler 113 increases, which can compress the push rod 111 and apply a pushing force towards the reset member 12, thus causing the push rod 111 to tend to move towards the reset member 12. When the ambient temperature decreases, the volume of the filler 113 gradually decreases, and the reset member 12 can apply a reset force towards the push member 11 to the first seal 13, thus causing the push rod 111 to tend to move away from the reset member 12, which is beneficial for resetting the push rod 111.

[0042] In the above embodiments, see Figure 1 and Figure 4 The outer shell 112 is connected to the valve body 110. Specifically, the outer wall of the outer shell 112 can be connected to the cavity wall of the first cavity 2. This application does not limit the specific connection method between the outer shell 112 and the valve body 110. In some embodiments, the outer wall of the outer shell 112 can be formed with external threads, and the cavity wall of the first cavity 2 can be formed with internal threads that mate with the external threads, so that the outer shell 112 and the valve body 110 can be threadedly connected.

[0043] In some embodiments, see Figure 1 , Figure 2 and Figure 4 The outer shell 112 is provided with multiple heat-conducting fins 114 at the end away from the reset member 12, which facilitates the conduction of heat in the intercooler cavity to the filler 113 in the outer shell 112, thereby improving the heat conduction effect and making it easier for the volume of the filler 113 to change in a timely manner with the temperature change of the intercooler cavity, thus improving the sensitivity and automation of the first valve core 10.

[0044] In some embodiments, see Figure 1 and Figure 4The pusher 11 also includes an isolation sleeve 115 disposed within the housing 112 and used to isolate the filler 113 and the push rod 111. The isolation sleeve 115 has an isolation cavity for the push rod 111 to be inserted. The isolation sleeve 115 is fitted onto the push rod 111 and can act as a buffer during the process of the filler 113 expanding and compressing the push rod 111 due to heat, which helps protect the push rod 111. The isolation sleeve 115 can isolate the filler 113 and the push rod 111, thereby preventing the filler 113 from leaking out as the push rod 111 moves relative to the housing 112 toward the resetter 12, which helps improve the sealing effect of the filler 113. In addition, the isolation sleeve 115 can also play a certain role in heat insulation, so that the heat conducted to the filler 113 can be used as much as possible for the expansion of the filler 113 volume, which helps to avoid the waste of energy due to heat transfer to the push rod 111.

[0045] In the above embodiments, see Figure 1 and Figure 4 Both the isolation sleeve 115 and the outer shell 112 have through holes at their ends facing the reset member 12 for the push rod 111 to pass through. The isolation sleeve 115 can be connected to the inner wall of the outer shell 112 by means of adhesive bonding or other methods. The end of the push rod 111 away from the reset member 12 can pass through the through hole and be inserted into the isolation cavity of the isolation sleeve 115. This application does not specifically limit the material of the isolation sleeve 115. In some embodiments, the isolation sleeve 115 can be made of rubber material.

[0046] In some embodiments, the housing 112 may include a main body and a plug portion connected to each other, the heat-conducting fins 114 may be provided at the end of the main body portion away from the plug portion, the isolation sleeve 115 may be connected to the end of the plug portion near the main body portion, and the plug portion has a through hole for the push rod 111 to pass through.

[0047] In some embodiments, see Figures 1 to 3 The end of the second cavity 4 away from the outlet 5 is an open end 7, which is used to allow high-pressure gas to flow into the second cavity 4. The second valve core 20 includes an elastic element 21 connected to the valve body 110 and a second sealing element 22 connected to the elastic element 21 and movable within the second cavity 4. The second sealing element 22 can divide the second cavity 4 into a first chamber communicating with the open end 7 and a second chamber communicating with the outlet 5. The elastic element 21 is located in the first chamber and is used to apply an elastic force toward the open end 7 to the second sealing element 22 so that the second sealing element 22 opens the outlet 3. When the pressure applied to the second sealing element 22 by the high-pressure gas flowing in from the open end 7 is greater than the elastic force applied by the elastic element 21, the second sealing element 22 blocks the outlet 3.

[0048] Since the end of the second chamber 4 furthest from the liquid outlet 5 is an open end 7, the inner cavity of the intercooler is connected to this open end 7. When the high-pressure gas pressurized by the turbocharger enters the intercooler, it can flow into the open end 7 and the first chamber, applying pressure to the second seal 22. When the pressure is greater than the elastic force applied by the elastic element 21, the second seal 22 moves towards the liquid outlet 5, sealing the liquid outlet 3 and keeping the entire intercooler in a sealed state. When the pressure is less than the elastic force applied by the elastic element 21, the second seal 22 moves towards the open end 7, opening the liquid outlet 3. The second seal 22 can reciprocate within the second chamber 4, thereby controlling the opening and closing of the liquid outlet 3.

[0049] In the above embodiments, the second sealing member 22 can be a cover, and the elastic member 21 can be a spring.

[0050] In other embodiments, the second valve core 20 may also include a hydraulic component connected to the valve body 110 and a second seal 22 connected to the hydraulic component and movable within the second cavity 4. The hydraulic component can drive the second seal 22 to move within the second cavity 4 to block or open the liquid outlet 3.

[0051] In some embodiments, see Figures 1 to 3 Since the open end 7 of the second cavity 4 is connected to the first cavity, the condensate produced by the intercooler can easily flow into and be stored in the first cavity from the open end 7. In order to improve the drainage effect of the intercooler and protect the elastic element 21 located in the first cavity, the side wall of the valve body 110 can be provided with a drain groove 8 that connects the first cavity and the atmosphere, so that the condensate flowing into the first cavity can be discharged to the atmosphere from the drain groove 8.

[0052] In some embodiments, see Figures 1 to 3 The second valve core 20 also includes a limiting member 23 connected to the valve body 110. The limiting member 23 is disposed in the second chamber and is closer to the outlet 5 than the liquid inlet 3. The limiting member 23 has a through hole and is used to limit the position of the second seal 22 in the second chamber 4. High-pressure gas and / or liquid can flow through the through hole of the limiting member 23.

[0053] In the above embodiments, see Figures 1 to 3 The limiting member 23 can be formed as a limiting ring, which can be threadedly connected to the valve body 110. In addition, a limiting ring can also be provided in the first chamber near the open end 7, and the end of the elastic member 21 away from the second seal 22 can be connected to the limiting ring, so that the high-pressure gas and / or the condensate generated by the intercooler can flow through the through hole of the limiting ring to the first chamber.

[0054] In other embodiments, the first valve core 10 may also be an electronically controlled switch to open or block the liquid inlet 1, and the second valve core 20 may also be an electronically controlled switch to open or block the liquid outlet 3.

[0055] In some embodiments, see Figure 1 and Figure 2 The drain valve 100 also includes a liquid storage element 130 sleeved on the valve body 110, the liquid storage element 130 having a liquid storage chamber 131 communicating with the liquid inlet 1. When the valve core unit 120 is in the closed state, the liquid storage chamber 131 of the liquid storage element 130 can store the condensate generated by the intercooler, thereby facilitating the discharge of condensate when the valve core unit 120 is in the open state, which is beneficial to improving the drainage effect.

[0056] In the above embodiment, the outer wall of the valve body 110 may be formed with an external thread, and the inner wall of the liquid storage component 130 may be formed with an internal thread that mates with the external thread, thereby enabling the liquid storage component 130 to be threadedly connected to the valve body 110. Since the threaded connection is a detachable connection, it is convenient to replace the liquid storage component 130 and the valve body 110 in a timely manner when they are damaged, and it is also convenient to adapt the model according to the differences in operating parameters.

[0057] For the embodiment where the valve body 110 has a drain groove 8 on its side wall, see [reference needed]. Figure 1 The liquid storage chamber 131 of the liquid storage component 130 can be connected to the drain tank 8, so that the liquid entering the first chamber can be stored in the liquid storage chamber 131 after flowing through the drain tank 8, which facilitates the discharge of condensate when the valve core unit 120 is in the open state.

[0058] According to the second aspect of this application, see [link / reference]. Figure 1 and Figure 2 This application provides an intercooler, including an intercooler base 200 and a drain valve 100 as described in any of the above embodiments. The intercooler base 200 is provided with a mounting hole 210, and the drain valve 100 passes through the mounting hole 210 and is connected to the hole wall of the mounting hole 210.

[0059] In the embodiment where the drain valve 100 includes a reservoir 130, the outer wall of the reservoir 130 may have an external thread, and the mounting hole 210 of the intercooler base 200 may have an internal thread that mates with the external thread, thereby connecting the drain valve 100 to the intercooler. Since the threaded connection is a detachable connection, it facilitates timely replacement when the drain valve 100 is damaged, resulting in low maintenance costs. The detachable connection between the drain valve 100 and the intercooler base 200 also facilitates model adaptation based on differences in operating parameters.

[0060] The drain valve 100 provided in this application is a custom design based on the actual working process of the intercooler. The working sequence of the intercooler and the working state of the drain valve 100 can be roughly summarized in the following table:

[0061] Low temperature close low pressure open close Low temperature close high pressure close close high temperature open high pressure close close high temperature open low pressure open open Low temperature close low pressure open close

[0062] Because the gas pressure in the intercooler changes with the engine's operating state, when the vehicle's engine starts running, the intercooler is in a low-temperature, low-pressure state. As the high-temperature gas from the turbocharger flows in, the intercooler gradually transitions to a low-temperature, high-pressure state and then to a high-temperature, high-pressure state. During this process, the drain valve 100 is closed, ensuring the intercooler remains sealed during engine operation and preventing leakage of high-pressure gas as it flows through. When the engine stops running, the intercooler's gas pressure drops significantly, causing it to gradually transition to a high-temperature, low-pressure state and then to a low-temperature, low-pressure state. The drain valve 100 is open during the high-temperature, low-pressure state to drain the condensate produced by the intercooler. When the intercooler gradually cools down to a low-temperature, low-pressure state, the drain valve 100 closes, making it a normally closed valve and preventing impurities from entering the intercooler when the engine is not running.

[0063] According to a third aspect of this application, an embodiment of this application provides a vehicle including the intercooler described above.

[0064] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A drain valve, characterized in that, include: The valve body includes an inlet, a first cavity, a through-hole, and a second cavity connected in sequence, wherein the second cavity has an outlet that connects the through-hole and the atmosphere; as well as The valve core unit includes a first valve core disposed in the first cavity and a second valve core disposed in the second cavity. The valve core unit has an open state and a closed state. In the open state, the first valve core opens the liquid inlet and the second valve core opens the liquid outlet, so that the liquid inlet, the first cavity, the liquid outlet and the liquid outlet are connected. In the closed state, the first valve core blocks the liquid inlet and / or the second valve core blocks the liquid outlet.

2. The drain valve according to claim 1, characterized in that, The first valve core includes a pusher and a reset member connected to the valve body, and a first sealing member disposed between the pusher and the reset member and movable within the first cavity. The pusher is used to apply a pushing force toward the reset member to the first sealing member so that the first sealing member opens the liquid inlet. The reset member is used to apply a reset force toward the pusher to the first sealing member so that the first sealing member blocks the liquid inlet.

3. The drain valve according to claim 2, characterized in that, The pushing member includes a push rod connected to the first seal and a housing sleeved on the push rod. The housing is filled with a filler. When the filler expands due to heat, it can apply a pushing force to the push rod toward the reset member, so that the push rod can move relative to the housing toward the reset member.

4. The drain valve according to claim 3, characterized in that, The outer casing is provided with multiple heat-conducting fins at the end away from the reset member; and / or The pusher also includes an isolation sleeve disposed within the housing and used to isolate the filler and the push rod, the isolation sleeve having an isolation cavity for inserting the push rod.

5. The drain valve according to any one of claims 1-4, characterized in that, The end of the second cavity furthest from the liquid outlet is an open end, which is used to allow high-pressure gas to flow into the second cavity; The second valve core includes an elastic element connected to the valve body and a second sealing element connected to the elastic element and movable within the second cavity. The second sealing element can divide the second cavity into a first chamber communicating with the open end and a second chamber communicating with the liquid outlet. The elastic element is located in the first chamber and is used to apply an elastic force toward the open end to the second sealing element so that the second sealing element opens the liquid outlet. When the pressure applied to the second sealing element by the high-pressure gas flowing in from the open end is greater than the elastic force applied by the elastic element, the second sealing element blocks the liquid outlet.

6. The drain valve according to claim 5, characterized in that, The valve body has a drain groove on its side wall that connects the first chamber to the atmosphere.

7. The drain valve according to claim 5, characterized in that, The second valve core also includes a limiting member connected to the valve body. The limiting member is disposed in the second chamber and is closer to the liquid outlet than the liquid inlet. The limiting member has a through hole and is used to limit the position of the second seal in the second chamber.

8. The drain valve according to claim 1, characterized in that, The drain valve also includes a liquid storage component sleeved on the valve body, the liquid storage component having a liquid storage cavity communicating with the liquid inlet.

9. An intercooler, characterized in that, The device includes an intercooler base and a drain valve as described in any one of claims 1-8, wherein the intercooler base is provided with a mounting hole, and the drain valve passes through the mounting hole and is connected to the wall of the mounting hole.

10. A vehicle, characterized in that, Includes the intercooler as described in claim 9.

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