A combined electric EGR valve

Abstract

The present invention discloses a combined electric EGR valve, which relates to the field of automobile parts, including an EGR valve body, the outer side of the EGR valve body is connected to the engine ECU through a connecting unit, and one side of the EGR valve body is provided with an air outlet; four groups of air vents are opened through the surface of the movable disk, and a guide mechanism is also provided on the surface of the movable disk, and the setting of the guide mechanism can drive the closing mechanism to work, thereby achieving the closing of the air vents in the later stage, so as to achieve the purpose of preventing backfire; a plurality of groups of cooling parts are also installed on one side of the cooling assembly. The combined electric EGR valve is provided with an anti-backfire mechanism, and the air vents opened on the surface of the movable disk can be closed by the closing mechanism through the movement of the movable disk, and one side of the outlet is closed by the fitting block, so as to achieve the purpose of preventing backfire, and the efficiency of exhaust gas transportation can also be improved by moving the piston rod.

Description

Technical Field

[0001] The invention relates to the technical field related to automobile parts, and in particular to a combined electric EGR valve. Background Art

[0002] EGR valve refers to "exhaust gas recirculation valve", which is an important component in the automobile engine control system. The working principle of the EGR valve is to send part of the exhaust gas discharged by the engine back to the cylinder, and realize the recirculation of exhaust gas by controlling the negative pressure of the intake pipe and the exhaust pressure. Specifically, one side of the EGR valve diaphragm is connected to the atmosphere, and the other side is a vacuum chamber equipped with a spring. The vacuum degree of the vacuum chamber is controlled by the EGR valve.

[0003] However, there are many types of existing EGR valves, but there are still certain shortcomings in the process of use. The EGR valve recycles the exhaust gas, but the temperature of the exhaust gas is just discharged from the inside of the engine, and the temperature of the gas is relatively high. Therefore, the EGR valve will cause certain damage during use. In order to solve the above problems, reference can be made to the prior art (application number 201410326599.8, published on 2014-10-08 Chinese patent) disclosed an electric EGR valve with a cooling structure. After the air nut is unscrewed, the water vapor generated in the cooling water channel due to the high temperature will be discharged through the air outlet, and the operation is extremely convenient; and reference can also be made to the prior art (application number 201020189439.0, published on 2010-12-22 Chinese patent) disclosed an electric EGR valve using air cooling, the valve seat of the electric EGR valve is arranged at the front end of the intake manifold of the engine, so that it is connected to the engine throttle or the intake pipe, and the valve seat becomes a part of the intake assembly, EGR valve The center rod of the GR valve passes through the entire valve seat, one end of the center rod is connected to the driving part of the electric EGR valve, and the other end is connected to the exhaust gas return pipe. When the EGR valve is opened, the high-temperature exhaust gas enters the engine intake channel; because the engine is continuously intake, the heat conducted through the center rod and the valve seat is cooled by the engine intake, which effectively protects the motor and improves the reliability of the electric EGR valve; and reference can be made to a new type of EGR cooler disclosed in the prior art (application number 202110904509.9, Chinese patent publication date 2021-10-01), which is provided with a temperature sensor on the valve seat, and the exhaust gas temperature data signal is fed back to the engine ECU in time, so as to control the flow of the flow control water valve according to the exhaust gas temperature, and the flow control is precise and high. At the same time, the flow control water valve adopts a three-way method, and the excess coolant flow is diverted away, so that the temperature of the cooled exhaust gas is controlled within a relatively constant range, which can effectively reduce the formation of carbon deposits and coking, and improve the durability and reliability of the EGR valve assembly and the EGR cooler assembly.

[0004] Although the above device can solve the problem that the current EGR valve can cool the gas, when the electric EGR valve is connected to the engine, backfire may occur inside the engine. When the exhaust gas is transported to one side of the electric EGR valve through the exhaust pipe, the backfire may cause damage to the electric EGR valve, thereby resulting in high maintenance costs in the later stage.

[0005] Therefore, we propose a combined electric EGR valve to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide a combined electric EGR valve to solve the problem proposed in the above background technology that when the electric EGR valve currently on the market is connected to the engine, there may be a backfire phenomenon inside the engine. When the exhaust gas is transported to one side of the electric EGR valve through the exhaust pipe, the backfire phenomenon may cause the electric EGR valve to be damaged, thereby resulting in a high subsequent maintenance cost.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a combined electric EGR valve, comprising an EGR valve body, wherein the outer side of the EGR valve body is connected to the engine ECU via a connecting unit, and an air outlet is arranged on one side of the EGR valve body; the outer side of the EGR valve body is driven by an electric actuator, and the outer side of the EGR valve body is assembled and installed between a docking component and a cooling component, and an air inlet is arranged at one end of the cooling component away from the docking component; an anti-backfire mechanism is arranged on one side of the cooling component close to the air inlet, and the anti-backfire mechanism is arranged In order to avoid the backfire of the gas transported by the air inlet, the anti-backfire mechanism can also improve the transportation efficiency of the exhaust gas. The anti-backfire mechanism includes a guiding mechanism and a closing mechanism, and four groups of auxiliary channels are installed on the inner wall of the cooling component. The inner walls of the four groups of auxiliary channels are also attached with a movable disk. Four groups of air vents are opened on the surface of the movable disk. A guiding mechanism is also arranged on the surface of the movable disk. The setting of the guiding mechanism can drive the closing mechanism to work, thereby realizing the closure of the air vents at a later stage, so as to achieve the purpose of preventing backfire. Several groups of cooling parts are also installed on one side of the cooling component.

[0008] Preferably, an inlet is provided on one side of the auxiliary channel close to the air inlet, one end of the inlet is connected to the Tesla valve channel, and the tail end of the Tesla valve channel is connected to the outlet to realize one-way transportation of exhaust gas.

[0009] Preferably, the guide mechanism includes a spiral rod slidingly arranged at the corners around the movable plate, both ends of the spiral rod are fixed to the inner wall of the auxiliary channel, one side of the spiral rod is fixed to one side of the reset spring, the other end of the reset spring is fixed to the side wall of the movable plate, and four groups of air vents are opened on the surface of the movable plate.

[0010] Preferably, the closing mechanism includes a rotating gear arranged inside the movable disk, the inner side of the rotating gear is spirally connected to the outer side of the spiral rod, the front and rear surfaces of the rotating gear are also rotatably connected to the inside of the movable disk through a matching rotating block, the outer side of the rotating gear is also meshedly connected to one side surface of the fan-shaped gear, and a closing plate is also fixed to the outer side of the fan-shaped gear.

[0011] Preferably, one end of the closing plate is rotatably arranged inside the movable disk, and the outer side of the axial end of the closing plate is also connected to the movable disk through a torsion spring. A sealing gasket is arranged on the outer side of the closing plate, and the outer side of the sealing gasket is fitted to the outer side of the air vent to achieve the closing of the air vent.

[0012] Preferably, the rotation directions of the two groups of rotating gears that are diagonally arranged are the same, and the rotating gears form a rotating structure through the spiral rod and the inside of the matching rotating block.

[0013] Preferably, a fitting block is fixed on the outer wall of the movable plate, the outer side of the fitting block is slidingly fitted inside the first slide groove, a second slide groove is provided on the side of the first slide groove close to the cooling part, a movable bar is fixed on the outer wall of the fitting block, a through groove is provided on the outer side of the middle part of the movable bar, and a piston rod is fixed at the end position of the movable bar.

[0014] Preferably, the moving bar is in an "L" shape, and the shorter portion of the moving bar fits inside the second sliding groove.

[0015] Preferably, one side of the first chute corresponds to the outer side of the outlet, the fitting block is on the same horizontal line as the outlet, and the fitting block is arranged at the rightmost end of the first chute.

[0016] Preferably, one side of the piston rod is arranged inside the Tesla valve channel, and the movement of the piston rod realizes accelerated flow processing of the exhaust gas inside the Tesla valve channel.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the combined electric EGR valve is provided with an anti-backfire mechanism, and the air vent opened at the surface of the moving disk can be closed by the closing mechanism through the movement of the moving disk, and one side of the outlet is closed by the fitting block, thereby achieving the purpose of anti-backfire. In addition, the efficiency of exhaust gas transportation can be improved by moving the piston rod, and the specific contents are as follows:

[0018] 1. A cooling component is provided. By delivering gas through the Tesla valve channel and the air vent, the gas can be delivered to one side of the cooling element, and the cooling element can be used for cooling. In addition, by continuously delivering gas, the contact pressure between the gas and the moving disk is increased, so that the moving disk can drive the piston rod to move inside the Tesla valve channel during the movement, thereby accelerating the efficiency of gas delivery.

[0019] 2. A spiral rod is provided, and through the spiral connection between the spiral rod and the rotating gear, the rotating gear can be stably rotated inside the moving disk, and the rotating gear can drive the fan gear to rotate, and then the fan gear can drive the closing plate to close the air vent, thereby preventing the backfire phenomenon. When the moving disk moves, one side of the fitting block will close the outlet, thereby further preventing the EGR valve body from backfire. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0021] Figure 2 It is a side view structural schematic diagram of the present invention;

[0022] Figure 3 It is a schematic diagram of a partial cross-sectional structure of a cooling assembly of the present invention;

[0023] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the auxiliary channel of the present invention;

[0024] Figure 5 It is a schematic diagram of the side view structure of the movable disk of the present invention;

[0025] Figure 6 This is a schematic diagram of the main structure of the mobile disk of the present invention;

[0026] Figure 7 For the present invention Figure 6 The enlarged structural diagram at A in the middle;

[0027] Figure 8 It is a schematic diagram of the cross-sectional structure of the movable disk of the present invention;

[0028] Fig. 9 This is a schematic diagram of the front view structure of the second chute of the present invention;

[0029] Fig.10 It is a schematic diagram of the connection between the movable plate and the bonding block of the present invention.

[0030] In the figure: 1. EGR valve body; 2. connecting unit; 3. air outlet; 4. electric actuator; 5. docking assembly; 6. cooling assembly; 7. air inlet; 8. auxiliary channel; 9. inlet; 10. Tesla valve channel; 11. outlet; 12. moving disk; 13. screw rod; 14. return spring; 15. air vent; 16. rotating gear; 17. matching rotating block; 18. fan gear; 19. closing plate; 20. fitting block; 21. first slide groove; 22. moving bar; 23. through groove; 24. second slide groove; 25. piston rod; 26. cooling part. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 10 , the present invention provides the following technical solutions: Embodiment 1

[0033] In order to facilitate the cooling of the exhaust gas, please refer to the attached Figure 1 -Attached Figure 5 The outer side of the EGR valve body 1 is connected to the engine ECU through a connecting unit 2, and an air outlet 3 is provided on one side of the EGR valve body 1; the outer side of the EGR valve body 1 is driven by an electric actuator 4, and the outer side of the EGR valve body 1 is assembled and installed between a docking component 5 and a cooling component 6, and an air inlet 7 is provided at one end of the cooling component 6 away from the docking component 5; a plurality of groups of cooling parts 26 are also installed on one side of the cooling component 6; an inlet 9 is also provided on one side of the auxiliary channel 8 near the air inlet 7, and one end of the inlet 9 is connected to the Tesla valve channel 10, and the tail end of the Tesla valve channel 10 is connected to the outlet 11, so as to realize one-way delivery of exhaust gas; the guide mechanism includes a spiral rod 13 slidingly arranged through the corners of the movable disk 12, and the two ends of the spiral rod 13 are fixed to the inner wall of the auxiliary channel 8, one side of the spiral rod 13 is fixed to one side of the return spring 14, and the other end of the return spring 14 is fixed to the side wall of the movable disk 12, and four groups of air vents 15 are provided on the surface of the movable disk 12.

[0034] First, when installing the EGR valve body 1, one side of the EGR valve body 1 is docked with the cooling component 6 through the docking component 5, and the docking is performed by the locking bolts. It is connected to the automobile engine ECU through the connecting unit 2. The electric actuator 4 can be driven by the connecting unit 2 through the setting of the sensor, so that the channel of the EGR valve body 1 can be closed and opened, so that the gas can flow through the outlet 3; when the exhaust gas needs to be cooled, it is transported to the inside of the air inlet 7 through the exhaust gas, and the exhaust gas is blocked by the moving disk 12. At this time, a part of the gas will be transported through the inlet 9, the Tesla valve channel 10 and the outlet 11. Through the characteristics of the Tesla valve channel 10, part of the gas can be circulated, and other gases can be transported through the setting of the moving disk 12 and the air vent 15. After the gas is transported, the rest can be cooled through the cooling member 26. At this time, the gas cooling can be achieved, which is convenient for the operation of the EGR valve body 1 in the later stage. Embodiment 2

[0035] The present embodiment is different from the first embodiment in that the cooling efficiency inside the component 6 can be further rapidly cooled. Figure 4 -Attached Figure 7 and attached Fig. 9 , a fitting block 20 is fixed to the outer wall of the movable disk 12, and the outer side of the fitting block 20 is slidingly fitted inside the first slide groove 21, and a second slide groove 24 is also provided on the side of the first slide groove 21 close to the cooling member 26, and a moving bar 22 is fixed to the outer wall of the fitting block 20, and a through groove 23 is provided on the outer side of the middle of the moving bar 22, and a piston rod 25 is fixed to the end of the moving bar 22; the moving bar 22 is in an "L" shape, and the shorter position of the moving bar 22 fits inside the second slide groove 24; one side of the first slide groove 21 corresponds to the outer side of the outlet 11, the fitting block 20 is on the same horizontal line as the outlet 11, and the fitting block 20 is arranged at the rightmost end of the first slide groove 21; one side of the piston rod 25 is arranged inside the Tesla valve channel 10, and the movement of the piston rod 25 realizes the accelerated circulation treatment of the exhaust gas inside the Tesla valve channel 10.

[0036] When a large amount of exhaust gas is transported, the exhaust gas will squeeze one side of the movable disk 12. At this time, the movable disk 12 moves stably through the screw rod 13. At this time, the movable disk 12 can make the fitting block 20 fixed on the outside move inside the first slide groove 21 during the movement, so that the movable bar 22 will drive the piston rod 25 to move, so that the piston rod 25 slides inside the Tesla valve channel 10. Through the extraction process, the gas is discharged through the outlet 11 and the through groove 23, which can accelerate the efficiency of exhaust gas discharge. Embodiment 3

[0037] In order to solve the problem that when the electric EGR valve on the market is connected to the engine, there may be backfire inside the engine. When the exhaust gas is transported to one side of the electric EGR valve through the exhaust pipe, the backfire phenomenon will cause the electric EGR valve to be damaged, resulting in a high maintenance cost in the later stage. Please refer to the attached Figure 1 -Attached Figure 8 An anti-backfire mechanism is provided on one side of the cooling component 6 near the air inlet 7. The setting of the anti-backfire mechanism prevents the gas transported by the air inlet 7 from backfireing. The anti-backfire mechanism can also improve the transportation efficiency of the exhaust gas. The anti-backfire mechanism includes a guiding mechanism and a closing mechanism. Four groups of auxiliary channels 8 are installed on the inner wall of the cooling component 6. The inner walls of the four groups of auxiliary channels 8 are also attached with a moving disk 12. Four groups of air vents 15 are opened on the surface of the moving disk 12. A guiding mechanism is also provided on the surface of the moving disk 12. The setting of the guiding mechanism can drive the closing mechanism to work, thereby realizing the closure of the air vent 15 at a later stage, so as to achieve the purpose of preventing backfire; the closing mechanism includes a rotating gear 16 provided inside the moving disk 12, and the inner side of the rotating gear 16 is in contact with the screw The outer sides of the rotating rod 13 are spirally connected, and the front and rear surfaces of the rotating gear 16 are also rotatably connected to the inside of the movable disk 12 through the matching rotating block 17. The outer side of the rotating gear 16 is also meshed and connected to one side of the fan gear 18, and a closing plate 19 is also fixed to the outer side of the fan gear 18; one end of the closing plate 19 is rotatably set inside the movable disk 12, and the outer side of the axial end of the closing plate 19 is also connected to the movable disk 12 through a torsion spring, and a sealing gasket is set on the outer side of the closing plate 19, and the outer side of the sealing gasket is fitted on the outer side of the air vent 15 to achieve the closing of the air vent 15; the two groups of rotating gears 16 are diagonally arranged with the same rotation direction of the rotating gears 16, and the rotating gears 16 form a rotating structure through the spiral rod 13 and the inside of the matching rotating block 17.

[0038] When it is necessary to deal with the flashback phenomenon, the gas will be transmitted in the form of waves and act on one side of the movable disk 12. At this time, when the movable disk 12 is moving, the rotating gear 16 set inside the movable disk 12 rotates through the screw rod 13. At this time, the rotating gear 16 will rotate inside the movable disk 12 through the matching rotating block 17, so that the rotating gear 16 can also drive the meshing fan gear 18 to rotate during the rotation process, so that the closing plate 19 fixed on one side of the fan gear 18 closes the air vent 15 through the sealing gasket. At this time, the gas transmission can be avoided, and the movable disk 12 will continue to slide. The bonding block 20 set on one side of the movable disk 12 continues to slide inside the first slide groove 21, so that one side of the bonding block 20 closes one side of the outlet 11, thereby blocking the gas transmission, thereby achieving the purpose of preventing flashback.

[0039] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A combined electric EGR valve, comprising an EGR valve body (1), wherein the outer side of the EGR valve body (1) is connected to an engine ECU via a connecting unit (2), and an air outlet (3) is provided on one side of the EGR valve body (1); Features: The outer side of the EGR valve body (1) is driven by an electric actuator (4), and the outer side of the EGR valve body (1) is assembled and installed between a docking component (5) and a cooling component (6), and an air inlet (7) is provided at one end of the cooling component (6) away from the docking component (5); An anti-backfire mechanism is provided on one side of the cooling assembly (6) near the air inlet (7). The anti-backfire mechanism prevents the gas transported by the air inlet (7) from backfired. The anti-backfire mechanism can also improve the transport efficiency of the exhaust gas. The anti-flashback mechanism comprises a guiding mechanism and a closing mechanism, and the inner wall of the cooling component (6) is provided with four groups of auxiliary channels (8), the inner walls of the four groups of auxiliary channels (8) are also fitted with a movable disk (12), the surface of the movable disk (12) is provided with four groups of air vents (15), and the surface of the movable disk (12) is also provided with a guiding mechanism, and the setting of the guiding mechanism can drive the closing mechanism to work, thereby achieving the closing of the air vents (15) at a later stage, thereby achieving the purpose of preventing flashback; A plurality of groups of cooling components (26) are also installed on one side of the cooling assembly (6).

2. A combined electric EGR valve according to claim 1, characterized in that: The auxiliary channel (8) is also provided with an inlet (9) at a position on one side close to the air inlet (7), one end of the inlet (9) is connected to the Tesla valve channel (10), and the tail end of the Tesla valve channel (10) is connected to the outlet (11), thereby realizing one-way transportation of exhaust gas.

3. The combined electric EGR valve according to claim 1, characterized in that: The guide mechanism comprises a spiral rod (13) slidably arranged through the corners of the movable plate (12), the two ends of the spiral rod (13) being fixed to the inner wall of the auxiliary channel (8), one side of the spiral rod (13) being fixed to one side of a return spring (14), the other end of the return spring (14) being fixed to the side wall of the movable plate (12), and four groups of air vents (15) being formed through the surface of the movable plate (12).

4. The combined electric EGR valve according to claim 1, characterized in that: The closing mechanism comprises a rotating gear (16) arranged inside the movable disk (12); the inner side of the rotating gear (16) is spirally connected to the outer side of the spiral rod (13); the front and rear surfaces of the rotating gear (16) are also rotationally connected to the inside of the movable disk (12) through a matching rotating block (17); the outer side of the rotating gear (16) is also meshedly connected to a side surface of a fan-shaped gear (18); and a closing plate (19) is also fixed to the outer side of the fan-shaped gear (18).

5. A combined electric EGR valve according to claim 4, characterized in that: One end of the closing plate (19) is rotatably arranged inside the movable disk (12), and the outer side of the axial end of the closing plate (19) is also connected to the movable disk (12) via a torsion spring. A sealing gasket is arranged on the outer side of the closing plate (19), and the outer side of the sealing gasket is attached to the outer side of the air vent (15), thereby achieving a closed process of the air vent (15).

6. The combined electric EGR valve according to claim 4, characterized in that: The two groups of rotating gears (16) are arranged diagonally opposite to each other and have the same rotation direction. The rotating gears (16) form a rotating structure through the spiral rod (13) and the inside of the matching rotating block (17).

7. The combined electric EGR valve according to claim 1, characterized in that: A bonding block (20) is fixed to the outer wall of the movable plate (12), and the outer side of the bonding block (20) is slidably bonded inside the first slide groove (21). A second slide groove (24) is provided on one side of the first slide groove (21) close to the cooling member (26). A moving bar (22) is fixed to the outer wall of the bonding block (20), and a through groove (23) is provided on the outer side of the middle of the moving bar (22). A piston rod (25) is fixed to the end of the moving bar (22).

8. The combined electric EGR valve according to claim 7, characterized in that: The moving bar (22) is in an "L" shape, and the shorter portion of the moving bar (22) fits inside the second sliding groove (24).

9. The combined electric EGR valve according to claim 7, characterized in that: One side of the first slide groove (21) corresponds to the outer side of the outlet (11), the fitting block (20) and the outlet (11) are on the same horizontal line, and the fitting block (20) is arranged at the rightmost end of the first slide groove (21).

10. The combined electric EGR valve according to claim 7, characterized in that: One side of the piston rod (25) is arranged inside the Tesla valve channel (10), and the movement of the piston rod (25) realizes accelerated flow processing of the exhaust gas inside the Tesla valve channel (10).

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