A drain valve and intercooler having the same

Abstract

The utility model relates to water drain valve technical field discloses a water drain valve and have its intercooler, including valve body, first sealing washer, second sealing washer and elastic part, wherein, the valve body is through having been set up in the first flow channel, second flow channel and third flow channel of longitudinal distribution in succession in the inside, first sealing washer is arranged in the first flow channel, second sealing washer is arranged in the third flow channel, the elastic part is arranged in the second flow channel, and one end of the elastic part is connected with first sealing washer, and the other end is connected with second sealing washer. Through setting up second sealing ring can move up and block second flow channel under the condition of negative pressure, make intercooler and outside isolation, prevent inhaling dust or big granule impurity.

Description

Technical Field

[0001] This utility model relates to the field of drain valve technology, and in particular to a drain valve and an intercooler having the same. Background Technology

[0002] With the continuous development of internal combustion engine technology, turbocharging has become an important means to improve engine power and economy, especially in diesel engines. Turbocharging can increase intake air density and the amount of air in the cylinder, thereby improving combustion efficiency and power output. While an intercooler is used to lower the engine's air temperature, in environments with high humidity or low temperature, water vapor in the air condenses into liquid water inside the intercooler, leading to severe water accumulation.

[0003] For example, Chinese utility model patent with publication number CN207777703U discloses an automatic drain valve for an intercooler.

[0004] In the above technical solution, when the internal combustion engine is running, the intercooler is filled with high-pressure gas. Under the pressure of the high-pressure gas and the gravity of the valve core itself, the valve core moves downward against the spring force, and then the conical sealing surface of the valve core and the valve body are in contact, preventing the high-pressure gas from leaking through the drain groove and drain hole. When the internal combustion engine stops working, the high-pressure gas in the intercooler drops to normal pressure, and the valve core moves upward against its own gravity under the spring force, opening the conical sealing surface of the valve core and the valve body, and the condensate in the intercooler is discharged through the drain groove and drain hole. However, in the above solution, a brief negative pressure is formed after the internal combustion engine is turned off, causing dust or large particulate impurities to be sucked into the intercooler. Utility Model Content

[0005] To overcome at least one of the defects described in the prior art, this utility model provides a drain valve and an intercooler having the same. By setting a second sealing ring, it can move upward and block the second flow channel under negative pressure, thus isolating the intercooler from the outside environment and preventing the intake of dust or large particulate impurities.

[0006] The technical solution of this utility model is implemented as follows: A drain valve includes a valve body, a first sealing gasket, a second sealing gasket, and an elastic element. The valve body has a first flow channel, a second flow channel, and a third flow channel that are longitudinally distributed in sequence. The first sealing gasket is disposed in the first flow channel. The second sealing gasket is disposed in the third flow channel. The elastic element is disposed in the second flow channel, and one end of the elastic element is connected to the first sealing gasket, and the other end of the elastic element is connected to the second sealing gasket.

[0007] Based on the above technical solutions, preferably, the first flow channel includes a first large flow channel and a first conical flow channel, wherein the first large flow channel is located above and connected to the first conical flow channel; the top surface area of ​​the first conical flow channel is the same as the bottom surface area of ​​the first large flow channel.

[0008] Based on the above technical solutions, preferably, the bottom surface area of ​​the first conical flow channel is the same as the bottom surface area of ​​the first sealing gasket and the top surface area of ​​the second flow channel.

[0009] Based on the above technical solutions, preferably, the third flow channel includes a second large flow channel and a second conical flow channel, wherein the second large flow channel is located below and connected to the second conical flow channel; the bottom area of ​​the second conical flow channel is the same as the top area of ​​the second large flow channel.

[0010] Based on the above technical solutions, preferably, the top surface area of ​​the second conical flow channel is the same as the top surface area of ​​the second sealing gasket and the bottom surface area of ​​the second flow channel.

[0011] Based on the above technical solutions, preferably, it also includes a retaining ring assembly, which is disposed in the first large flow channel. The retaining ring assembly includes multiple limiting retaining rings, which are spaced apart circumferentially along the first large flow channel. The elastic element can drive the first sealing gasket to move upward so that the top surface of the first sealing gasket abuts against the multiple limiting retaining rings.

[0012] Based on the above technical solutions, preferably, a drainage section is provided in the second large flow channel, the drainage section has a drainage channel, and the elastic element can drive the second sealing gasket to move down so that the bottom surface of the second sealing gasket abuts against the drainage section.

[0013] Based on the above technical solutions, preferably, the first sealing gasket and the second sealing gasket are made of rubber.

[0014] Based on the above technical solutions, preferably, a sealing ring is provided on the outer surface of the valve body.

[0015] An intercooler, including the aforementioned drain valve.

[0016] In summary, the drain valve and intercooler with the same provided by this utility model have the following advantages over the prior art: (1) When the engine is running normally, the intercooler is under high pressure. The first and second sealing gaskets overcome the elastic force of the elastic element and move downward, so that the first sealing gasket is in contact with the top surface of the second flow channel, and the second sealing gasket is not in contact with the bottom surface of the second flow channel. After the second sealing gasket moves downward, it abuts against the top surface of the drain section to ensure the sealing of the intercooler and prevent the high pressure gas in the intercooler from leaking. (2) When the engine is started and then turned off, the intercooler will form a short-term negative pressure. The second sealing gasket and the first sealing gasket will move upward under the action of the elastic element, so that the second sealing gasket is in contact with the bottom surface of the second flow channel, and the first sealing gasket moves upward and does not contact with the top surface of the second flow channel. After the first sealing gasket moves upward, it abuts against the bottom surface of the limiting ring to ensure the sealing of the intercooler and prevent external dust or impurities from being sucked into the intercooler. (3) When the internal and external pressures are balanced, the internal and external pressure balance occurs after the engine is turned off. Since the first sealing gasket has already abutted against the limit ring when the engine is turned off, the first sealing gasket does not move at this time, the second sealing gasket moves downward, the drain valve is in the open state, and the condensate in the intercooler can be discharged, which can solve the problem of intercooler tube expansion failure caused by condensate freezing. (4) By setting precise size matching, the bottom surface area of ​​the first conical flow channel is the same as the bottom surface area of ​​the first sealing gasket and the top surface area of ​​the second flow channel, and the top surface area of ​​the second conical flow channel is the same as the top surface area of ​​the second sealing gasket and the bottom surface area of ​​the second flow channel. This adaptability design makes the sealing gasket fit more tightly with the flow channel, significantly improves the sealing performance, and further reduces the risk of gas leakage and impurity inhalation. (5) Through the drainage section with drainage channel, the condensate in the intercooler can be quickly discharged in a safe state where the engine is stopped and there is no risk of negative pressure suction, so as to avoid water accumulation affecting the heat dissipation efficiency of the intercooler and the quality of engine intake. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a first-view perspective three-dimensional structural diagram of an embodiment of the present utility model; Figure 2 This is a second-view perspective three-dimensional structural diagram of an embodiment of the present utility model; Figure 3 This is a schematic diagram of the bottom structure of an embodiment of the present utility model; Figure 4This is a cross-sectional structural diagram of an embodiment of the present utility model; Figure 5 This is a schematic diagram of the internal components of the valve body in an embodiment of the present utility model; The meanings of the reference numerals in the attached drawings are as follows: 1. Valve body; 11. First flow channel; 111. First large flow channel; 112. First conical flow channel; 12. Second flow channel; 13. Third flow channel; 131. Second large flow channel; 132. Second conical flow channel; 2. Retaining ring assembly; 21. Limiting retaining ring; 3. First sealing gasket; 4. Second sealing gasket; 5. Elastic element; 6. Drainage part; 61. Drainage flow channel; 7. Sealing ring. Detailed Implementation

[0019] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0020] See Figures 1-5 Embodiment 1 of this utility model discloses a hot water discharge valve, including a valve body 1, a retaining ring assembly 2, a first sealing gasket 3, a second sealing gasket 4, and an elastic element 5.

[0021] See Figure 1 and Figure 4 As shown, in this embodiment, the valve body 1 has openings at both the top and bottom. The valve body 1 is interconnected from the top opening to the bottom opening. A first flow channel 11, a second flow channel 12, and a third flow channel 13 are longitudinally distributed throughout the valve body 1. This design forms a fluid channel that is interconnected from top to bottom. The condensate in the intercooler can flow naturally along the first flow channel 11, the second flow channel 12, and the third flow channel 13 under the influence of gravity, resulting in a smoother drainage path. A sealing ring 7, which is an O-ring, is provided on the outer surface of the valve body 1. The sealing ring 7 ensures reliable sealing and prevents sealing failure.

[0022] See Figure 1 , Figure 4 and Figure 5As shown, in this embodiment, the first sealing gasket 3 is disposed in the first flow channel 11, and the second sealing gasket 4 is disposed in the third flow channel 13. The cross-section of the first sealing gasket 3 is frustum-shaped, and the top surface area of ​​the first sealing gasket 3 is larger than the bottom surface area. The cross-section of the second sealing gasket 4 is also frustum-shaped, and the top surface area of ​​the second sealing gasket 4 is smaller than the bottom surface area. By setting the first sealing gasket 3 and the second sealing gasket 4, the first sealing gasket 3 can be moved downward under high engine pressure, and the second sealing gasket 4 can be moved upward under negative pressure when the engine is off. By using two methods under different pressure conditions, the drain valve can be sealed, ensuring sealing and preventing impurities from being sucked into the engine.

[0023] Specifically, the first sealing gasket 3 and the second sealing gasket 4 are made of rubber. The rubber material has good elasticity and flexibility. When the first sealing gasket 3 or the second sealing gasket 4 is in contact with the second flow channel 12 under the action of the elastic element 5 or fluid pressure, it can undergo moderate deformation to fill the tiny gaps that may exist on the contact surface and form a gapless seal. The rubber material has good water resistance and chemical corrosion resistance. It will not experience significant aging, cracking or swelling when in contact with condensate for a long time, and can maintain stable physical properties and sealing effect.

[0024] See Figure 4 As shown, in this embodiment, the first flow channel 11 includes a first large flow channel 111 and a first conical flow channel 112. The first large flow channel 111 is located above the first conical flow channel 112 and is connected to the first conical flow channel 112. The top surface area of ​​the first conical flow channel 112 is the same as the bottom surface area of ​​the first large flow channel 111. Specifically, the cross-section of the first conical flow channel 112 is frustum-shaped. The top surface area of ​​the first conical flow channel 112 is larger than the bottom surface area of ​​the first conical flow channel 112, and the top surface area of ​​the first conical flow channel 112 is the same as the bottom surface area of ​​the first large flow channel 111. This design provides better fit when the first sealing gasket 3 enters the first conical flow channel 112 from the first large flow channel 111, avoiding the first sealing gasket 3 from shifting or tilting during longitudinal movement, and providing a smooth guiding effect for the first sealing gasket 3.

[0025] See Figure 4As shown, in this embodiment, the third flow channel 13 includes a second large flow channel 131 and a second conical flow channel 132. The second large flow channel 131 is located below the second conical flow channel 132 and is connected to the second conical flow channel 132. The bottom area of ​​the second conical flow channel 132 is the same as the top area of ​​the second large flow channel 131. Specifically, the cross-section of the second conical flow channel 132 is frustum-shaped. The bottom area of ​​the second conical flow channel 132 is larger than the top area of ​​the second conical flow channel 132, and the bottom area of ​​the second conical flow channel 132 is the same as the top area of ​​the second large flow channel 131. This design provides better fit when the second sealing gasket 4 enters the second conical flow channel 132 from the second large flow channel 131, avoiding the second sealing gasket 4 from shifting or tilting during longitudinal movement, and providing a smooth guiding effect for the second sealing gasket 4.

[0026] See Figure 1 and Figure 4 As shown, in this embodiment, the bottom area of ​​the first conical flow channel 112 is the same as the bottom area of ​​the first sealing gasket 3 and the top area of ​​the second flow channel 12. This design ensures that the first conical flow channel 112 and the first sealing gasket 3 can form a complete fit when in contact, maximizing the sealing contact area and effect. Moreover, the first conical flow channel 112 has a structure that is wider at the top and narrower at the bottom. When the engine is working, the high-pressure gas pushes the first sealing gasket 3 downward, and the bottom surface of the first sealing gasket 3 can completely cover the top surface of the second flow channel 12, completely blocking the leakage path of the high-pressure gas. The height of the first conical flow channel 112 is greater than the height of the first sealing gasket 3. This design provides sufficient longitudinal movement space for the first sealing gasket 3. When the first sealing gasket 3 moves upward and resets, the space reserved in the height of the first flow channel 11 can avoid excessive compression between the first sealing gasket 3 and the top of the first flow channel 11 when the first sealing gasket 3 moves upward.

[0027] See Figure 1 and Figure 4 As shown, in this embodiment, the top surface area of ​​the second conical flow channel 132 is the same as the top surface area of ​​the second sealing gasket 4 and the bottom surface area of ​​the second flow channel 12. This design ensures that the second conical flow channel 132 and the second sealing gasket 4 can form a complete fit when they come into contact, maximizing the sealing contact area and effect. Moreover, the second conical flow channel 132 has a structure that is narrow at the top and wide at the bottom. When the engine is turned off, a negative pressure is formed, and the second sealing gasket 4 moves upward. The top surface of the second sealing gasket 4 can completely cover the bottom surface of the second flow channel 12, completely blocking the communication path between the outside and the intercooler. The height of the second conical flow channel 132 is greater than the height of the second sealing gasket 4. This design provides sufficient longitudinal movement space for the second sealing gasket 4. When the second sealing gasket 4 moves down to reset, the space reserved in the height of the third flow channel 13 can prevent excessive compression between the second sealing gasket 4 and the bottom of the third flow channel 13 when the second sealing gasket 4 moves down.

[0028] See Figure 4 and Figure 5 As shown, in this embodiment, the elastic element 5 is disposed within the second flow channel 12. Part of the elastic element 5 is also located within the first conical flow channel 112, and part is located within the second conical flow channel 132. One end of the elastic element 5 is connected to the first sealing gasket 3, and the other end is connected to the second sealing gasket 4. Specifically, the top end of the elastic element 5 is fixedly connected to the bottom surface of the first sealing gasket 3, and the bottom end of the elastic element 5 is fixedly connected to the top surface of the second sealing gasket 4. The extension and contraction force of the elastic element 5 can be directly transmitted along the axial direction of the second flow channel 12 to the first sealing gasket 3 and the second sealing gasket 4, avoiding uneven force distribution due to deviation in the force transmission path. The elastic element 5 drives the first sealing gasket 3 to move downwards to block the second flow channel 12 or drives the second sealing gasket 4 to move upwards to block the second flow channel 12. It should be noted that in this embodiment, the elastic element 5 is a compression spring. In other embodiments, the elastic element 5 can also be other structural components with elastic deformation effects.

[0029] It should also be noted that in this embodiment, the first flow channel 11 and the third flow channel 13 are symmetrically arranged with the second flow channel 12 as the center to ensure that the force on both ends of the spring is uniform.

[0030] See Figure 1 and Figure 5 As shown, in this embodiment, the retaining ring assembly 2 is disposed within the first flow channel 11, and the first sealing gasket 3 is located below the retaining ring assembly 2. Specifically, the retaining ring assembly 2 is disposed within the first large flow channel 111. The retaining ring assembly 2 includes multiple limiting retaining rings 21, which are spaced apart circumferentially along the first large flow channel 111. The multiple limiting retaining rings 21 are fixedly connected to the side wall of the first large flow channel 111 to ensure the firmness of the connection. There is a gap between adjacent limiting retaining rings 21 to facilitate the discharge of condensate from the gap and flow out through the first conical flow channel 112, the second flow channel 12, and the third flow channel 13. The multiple limiting retaining rings 21 can limit the upward movement distance of the first sealing gasket 3. The top surface of the first sealing gasket 3 abuts against the multiple limiting retaining rings 21. The movement stops when the top surface of the first sealing gasket 3 abuts against the limiting retaining rings 21, thus preventing the first sealing gasket 3 from excessively moving upward and squeezing the top of the first large flow channel 111, or causing the elastic element 5 to be excessively stretched.

[0031] See Figure 2 and Figure 3As shown, in this embodiment, a drainage section 6 is provided inside the second large flow channel 131. The drainage section 6 is fixedly connected to the circumferential sidewall of the second large flow channel 131. A drainage channel 61 is provided on the drainage section 6, located at the center of the drainage section 6, and the drainage channel 61 is cross-shaped. This design can simultaneously guide water flow from different directions. After the condensate in the intercooler enters the second large flow channel 131 through the second flow channel 12 and the second conical flow channel 132, it can be quickly dispersed and discharged through the four branches of the cross channel, reducing the residence time of the water in the drainage section 6. The second sealing gasket 4 is located above the drainage section 6. By setting the drainage section 6, the downward movement distance of the second sealing gasket 4 can be limited. The elastic member 5 can drive the second sealing gasket 4 downward so that the bottom surface of the second sealing gasket 4 abuts against the drainage section 6. The elastic member 5 can also drive the first sealing gasket 3 upward so that the top surface of the first sealing gasket 3 abuts against multiple limiting retaining rings 21.

[0032] In this embodiment, when the internal and external pressures are balanced, the internal and external pressure balance occurs after the engine is turned off. Since the first sealing gasket 3 is already in contact with the limiting ring 21 when the engine is turned off, the first sealing gasket 3 does not move at this time. The second sealing gasket 4 moves down and abuts against the drain section 6. The condensate will be discharged from the gap between the limiting rings 21 and through the space between the first sealing gasket 3 and the first conical flow channel 112, the second flow channel 12, and the space between the second sealing gasket 4 and the second conical flow channel 132, and discharged from the drain channel 61, thus preventing the condensate from freezing and reducing the failure rate of the intercooler.

[0033] This utility model also discloses an intercooler, including the above-mentioned drain valve, which is threadedly connected to the air outlet chamber of the intercooler.

[0034] Specific implementation steps When the engine is running normally, the intercooler is under positive pressure. The first sealing gasket 3 moves down to block the second flow channel 12, ensuring the intercooler's sealing performance. When the engine is turned off, a brief negative pressure state is formed. The second sealing gasket 4 moves up to block the second flow channel 12, while the first sealing gasket 3 moves up to abut against the limiting ring 21, ensuring the intercooler's sealing performance and preventing external impurities or dust from being sucked into the drain valve. When the internal and external pressures are balanced, the first sealing gasket 3 abuts against the limiting ring, and the second sealing gasket 4 moves down to abut against the drain section 6. The drain valve is in the open state, and the condensate in the intercooler is discharged.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drain valve characterized by, It includes a valve body (1), a first sealing gasket (3), a second sealing gasket (4), and an elastic element (5), wherein, The valve body (1) is provided with a first flow channel (11), a second flow channel (12) and a third flow channel (13) arranged longitudinally in sequence; The first sealing gasket (3) is disposed in the first flow channel (11); The second sealing gasket (4) is disposed within the third flow channel (13); The elastic element (5) is disposed in the second flow channel (12), and one end of the elastic element (5) is connected to the first sealing gasket (3), and the other end is connected to the second sealing gasket (4).

2. A blow-off valve according to claim 1, wherein The first flow channel (11) includes a first large flow channel (111) and a first tapered flow channel (112), wherein, The first large flow channel (111) is located above and connected to the first conical flow channel (112); The top surface area of ​​the first conical flow channel (112) is the same as the bottom surface area of ​​the first large flow channel (111).

3. A blow-off valve according to claim 2, wherein The bottom surface area of ​​the first conical flow channel (112) is the same as the bottom surface area of ​​the first sealing gasket (3) and the top surface area of ​​the second flow channel (12).

4. A drain valve according to claim 1, characterized in that, The third flow channel (13) includes a second large flow channel (131) and a second conical flow channel (132), wherein, The second large flow channel (131) is located below and connected to the second conical flow channel (132); The bottom area of ​​the second conical flow channel (132) is the same as the top area of ​​the second large flow channel (131).

5. A drain valve according to claim 4, characterized in that, The top surface area of ​​the second conical flow channel (132) is the same as the top surface area of ​​the second sealing gasket (4) and the bottom surface area of ​​the second flow channel (12).

6. A drain valve according to claim 2, characterized in that, It also includes a retaining ring assembly (2), which is disposed in the first large flow channel (111). The retaining ring assembly (2) includes a plurality of limiting retaining rings (21), which are spaced apart circumferentially along the first large flow channel (111). The elastic member (5) can drive the first sealing gasket (3) to move upward so that the top surface of the first sealing gasket (3) abuts against the plurality of limiting retaining rings (21).

7. A drain valve according to claim 4, characterized in that, The second large flow channel (131) is provided with a drainage part (6), the drainage part (6) is provided with a drainage channel (61), and the elastic member (5) can drive the second sealing gasket (4) to move down so that the bottom surface of the second sealing gasket (4) abuts against the drainage part (6).

8. A drain valve according to claim 1, characterized in that, The first sealing gasket (3) and the second sealing gasket (4) are made of rubber.

9. A drain valve according to claim 1, characterized in that, A sealing ring (7) is provided on the outer surface of the valve body (1).

10. An intercooler, characterized in that, Includes the drain valve as described in any one of claims 1-9.

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