Water jacket type cast exhaust manifold

Abstract

The utility model relates to the technical field of exhaust manifolds, in particular to a water jacket type cast exhaust manifold. Which comprises an exhaust manifold body and a cooling mechanism arranged outside the exhaust manifold body, and is characterized in that the cooling mechanism comprises an air cooling bin and a liquid cooling bin, the liquid cooling bin is arranged outside the exhaust manifold body and wraps the exhaust manifold body, and a liquid cooling cavity is formed between the liquid cooling bin and the exhaust manifold body; a liquid inlet and a liquid outlet of the liquid cooling bin are used for being communicated with a cooling system of a vehicle. The air cooling bin wraps the liquid cooling bin, the air cooling bin and the liquid cooling bin are arranged at intervals, a natural air flow channel is formed between the air cooling bin and the liquid cooling bin, and the air cooling bin is connected with a natural air filling mechanism. The cooling effect of the device on the exhaust manifold body is effectively improved, and the situation that the exhaust manifold body is damaged and cannot be used due to the fact that the temperature is too high in use is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust manifolds, in particular to a water jacket type casting exhaust manifold. Background Art

[0002] The exhaust manifold is one of the engine parts with the worst working conditions. It is subjected to temperature changes from ambient temperature to nearly one thousand degrees Celsius during operation. This causes the exhaust manifold to be easily damaged during use, reducing its service life.

[0003] An exhaust manifold heat dissipation device provided in Chinese Patent Publication No. CN204921126U comprises: N air intake cone covers, both ends of the air intake cone covers are open, the air intake of the air intake cone covers is provided with a grid, one end of N hoses are respectively connected to the air outlets of the N air intake cone covers, the other ends of the N hoses are connected to one end of the main pipe, the other end of the main pipe is located in a shell, the exhaust manifold is located in the shell, the shell is provided with an exhaust port, one end of the exhaust pipe is connected to the exhaust port, vacuum suction cups are respectively provided on the surfaces of the N hoses, the hoses are adsorbed on the lower surface of the hood of the car through the vacuum suction cups, and the exhaust manifold heat dissipation device is reasonably designed, the heat dissipation effect of the exhaust manifold is improved, damage during use is avoided, and the service life is extended.

[0004] In actual use, the device adopts simple air cooling, which has a slow cooling rate. At the same time, the wind speed depends on the speed of the vehicle, which has great limitations and low cooling effect.

[0005] For this purpose, an exhaust manifold is proposed. Utility Model Content

[0006] The purpose of the utility model is to solve the problem that in actual use, the device adopts simple air cooling, the cooling rate is slow, and the wind flow rate depends on the speed of the vehicle, which has great limitations and low cooling effect. The utility model provides a water jacket type casting exhaust manifold.

[0007] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0008] A water-jacketed cast exhaust manifold comprises an exhaust manifold body and a cooling mechanism arranged outside the exhaust manifold body, the cooling mechanism comprising an air cooling chamber and a liquid cooling chamber, the liquid cooling chamber is arranged outside the exhaust manifold body and covers the exhaust manifold body inside, a liquid cooling cavity is arranged between the liquid cooling chamber and the exhaust manifold body, a liquid inlet and a liquid outlet of the liquid cooling chamber are used to communicate with a cooling system of a vehicle; the air cooling chamber is covered outside the liquid cooling chamber, and the air cooling chamber and the liquid cooling chamber are arranged at an interval, and a natural wind flow channel is formed between the air cooling chamber and the liquid cooling chamber, and the air cooling chamber is connected to a natural wind injection mechanism.

[0009] Furthermore, the exhaust manifold body includes a mounting hole, an intake branch pipe, an exhaust branch pipe and an exhaust channel pipe. The exhaust branch pipe and the intake branch pipe are respectively arranged on opposite sides of the exhaust channel pipe and are both connected to the exhaust channel pipe. The number of the intake branch pipes is four groups and they are arranged equidistantly.

[0010] Furthermore, the air-cooled warehouse includes a first mounting shell, a second mounting shell, an exhaust port and a natural wind injection mechanism. The first mounting shell and the second mounting shell are detachably connected and are covered outside the liquid cooling warehouse. The exhaust port is opened at the bottom of the first mounting shell, and the natural wind injection mechanism is fixedly installed at the center of the top of the second mounting shell.

[0011] Furthermore, the natural wind injection mechanism includes a wind collecting hood, a protective grid and an injection pipe. The bottom end of the injection pipe is fixedly connected to the air cooling bin, the top of the injection pipe is fixedly installed with a wind collecting hood, one side of the wind collecting hood is open, the wind collecting hood is connected to the injection pipe, and a protective grid is installed on the open side of the wind collecting hood.

[0012] Furthermore, the liquid cooling chamber includes a first sealed shell, a second sealed shell, a drain pipe and a liquid inlet pipe, the first sealed shell and the second sealed shell are detachably connected and cover the exhaust manifold body, the drain pipe is fixedly installed on the top of the second sealed shell, the liquid inlet pipe is fixedly installed on the bottom of the first sealed shell, and the liquid inlet pipe and the drain pipe are respectively arranged at both ends of the exhaust manifold body.

[0013] Furthermore, the natural wind injection mechanism also includes an air guide protrusion, which is located directly below the air inlet pipe opening, and both sides of the air guide protrusion are gradually inclined downward from the middle to the end.

[0014] The beneficial effects of the utility model are as follows:

[0015] 1. The utility model is provided with an air cooling chamber and a liquid cooling chamber, which can reduce the temperature in multiple ways when the temperature of the exhaust manifold body is high, thereby effectively improving the cooling rate and the cooling effect of the device on the exhaust manifold body, and avoiding the exhaust manifold body being damaged and unusable due to excessive temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the natural wind injection mechanism of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the exhaust manifold body of the utility model;

[0019] Figure 4It is a schematic diagram of the exhaust port position structure of the utility model;

[0020] Figure 5 It is a schematic diagram of the cooling coil position structure of the utility model;

[0021] Figure 6 It is a schematic diagram of the position structure of the air guide protrusion of the utility model.

[0022] Figure numerals: 1. cooling mechanism; 2. exhaust manifold body; 3. air inlet; 4. natural wind injection mechanism; 5. injection pipe; 6. protective grid; 7. wind collecting hood; 8. mounting hole; 9. sealing slot; 10. air inlet branch pipe; 11. exhaust branch pipe; 12. exhaust channel pipe; 13. exhaust port; 14. liquid inlet pipe; 15. return pipe; 16. first mounting shell; 17. second mounting shell; 18. connecting block; 19. connecting bolt; 20. cooling coil; 21. fixing block; 22. natural wind flow channel; 23. locking bolt; 24. first sealing shell; 25. coolant inlet pipe; 26. drain pipe; 27. second sealing shell; 28. air guide block. DETAILED DESCRIPTION

[0023] like Figures 1 to 6 As shown, a water-jacketed cast exhaust manifold includes an exhaust manifold body 2, which is made of GJSA-XN i S i Cr-35-5-2 material sand casting. A cooling mechanism 1 is fixedly installed on the outer side of the exhaust manifold body 2. The cooling mechanism 1 includes an air cooling bin and a liquid cooling bin. A temperature sensor is arranged in the liquid cooling bin. The liquid cooling bin is fixedly installed on the exhaust manifold body 2. The air cooling bin cover is arranged on the outer side of the liquid cooling bin, and a natural wind flow channel 22 is formed between the inner wall of the air cooling bin and the outer wall of the liquid cooling bin.

[0024] In actual use, when the vehicle is in use, the air cooling chamber is driven by the movement of the vehicle, causing natural wind to enter the natural wind flow channel 22, and the exhaust manifold body 2 is preferentially cooled by air cooling. When the temperature of the exhaust manifold body 2 rises, the temperature sensor detects the value. When the temperature sensor value reaches the set value, the engine coolant enters the liquid cooling chamber, thereby cooling the exhaust manifold body 2 by liquid cooling.

[0025] The exhaust manifold body 2 includes a mounting hole 8, an intake branch pipe 10, an exhaust branch pipe 11, an exhaust channel pipe 12 and a sealing groove 9. The exhaust branch pipe 11 and the intake branch pipe 10 are respectively arranged on opposite sides of the exhaust channel pipe 12 and are both connected to the exhaust channel pipe 12. There are four groups of intake branch pipes 10 and they are arranged equidistantly. The ends of the four groups of intake branch pipes 10 away from the exhaust channel pipe 12 are fixedly installed with connecting flanges. The connecting flanges are provided with a mounting hole 8 for connecting to the engine. Sealing grooves 9 are provided on the outer wall of one end of the intake branch pipe 10 away from the exhaust channel pipe 12 and on the outer wall of one end of the exhaust branch pipe 11 away from the exhaust channel pipe 12.

[0026] The liquid cooling chamber includes a first sealed shell 24, a second sealed shell 27, a drain pipe 26, a liquid inlet pipe 14, a fixing block 21, a locking bolt 23, a coolant inlet pipe 25, a reflux pipe 15 and a cooling coil 20. The first sealed shell 24 and the second sealed shell 27 are detachably connected and cover the exhaust channel pipe 12 therein, and a liquid cooling chamber is formed between the first sealed shell 24, the second sealed shell 27 and the exhaust channel pipe 12. The drain pipe 26 is fixedly installed on the top of the second sealed shell 27, and the liquid inlet pipe 14 is fixedly installed on the bottom of the first sealed shell 24. The liquid inlet pipe 14 and the drain pipe 26 are respectively arranged at both ends of the exhaust channel pipe 12.

[0027] The liquid inlet pipe 14 is used to connect to the water outlet of the water pump of the vehicle's cooling system, and a solenoid valve is provided between the liquid inlet pipe 14 and the water outlet. The liquid discharge pipe 26 is connected to the liquid return pipe of the vehicle's cooling system. The coolant of the cooling system flows through the liquid cooling tank, thereby achieving liquid cooling of the exhaust manifold body 2.

[0028] The outer side walls of the first sealing shell 24 and the second sealing shell 27 are fixedly installed with a fixing block 21, and the fixing block 21 of the first sealing shell 24 is fixedly connected with the fixing block 21 on the second sealing shell 27 by a locking bolt 23. A cooling coil 20 is fixedly installed in the liquid cooling cavity, and the cooling coil 20 is sleeved on the exhaust manifold body 2. A coolant inlet pipe 25 is fixedly installed on one side of the liquid cooling bin, and the coolant inlet pipe 25 is fixedly connected to one end of the cooling coil 20. A return pipe 15 is fixedly installed on the other side wall of the liquid cooling bin, and the return pipe 15 runs through the liquid cooling bin horizontally and is fixedly connected to the other end of the cooling coil 20. Valves are provided on the return pipe 15 and the coolant inlet pipe 25 for connecting with the coolant circulating outside.

[0029] When the vehicle is driving, if the exhaust manifold body 2 continues to be hot, the vehicle can be stopped, and the external coolant is connected to the coolant inlet pipe 25, and the valve is opened to assist in cooling the exhaust manifold body 2 through the external coolant. An independent coolant circulation system can also be added to the vehicle and connected to the coolant inlet pipe 25 and the return pipe 15 to ensure the cooling effect on the exhaust manifold body 2.

[0030] A sealing gasket is arranged between the first sealing shell 24 and the second sealing shell 27, and the first sealing shell 24 and the second sealing shell 27 are inserted into the sealing groove 9. The use of the sealing gasket can effectively ensure the sealing of the liquid cooling chamber.

[0031] The air-cooled warehouse includes a first mounting shell 16, a second mounting shell 17, an exhaust port 13, a connecting block 18, a connecting bolt 19, an air guide protrusion 28, an air inlet pipe port 3 and a natural wind injection mechanism 4. The first mounting shell 16 and the second mounting shell 17 are covered outside the liquid cooling warehouse and are arranged in close contact with the outer wall of the liquid cooling warehouse. The outer walls of the first mounting shell 16 and the second mounting shell 17 are fixedly installed with connecting blocks 18. The connecting blocks 18 of the first mounting shell 16 and the connecting blocks 18 facing each other on the second mounting shell 17 are fixedly connected by connecting bolts 19. The bottom of the first mounting shell 16 is provided with an exhaust port 13, and the air inlet pipe port 3 is fixedly installed in the middle of the top of the second mounting shell 17. The air inlet pipe port 3 is connected to the cavity enclosed by the first mounting shell 16 and the second mounting shell 17. The natural wind injection mechanism 4 is fixedly installed on the air inlet pipe port 3, and the natural wind injection mechanism 4 is located at the air inlet of the automobile engine hood.

[0032] When the vehicle is moving, natural wind is injected into the air inlet of the car hood, and the natural wind injection mechanism 4 guides the wind into the air cooling chamber, and at the same time causes the natural wind to flow in the natural wind flow channel 22, and the temperature conducted in the liquid cooling chamber is cooled by the flowing natural wind.

[0033] The natural wind injection mechanism 4 includes an air collecting hood 7, a protective grid 6 and an injection pipe 5. The bottom end of the injection pipe 5 is fixedly connected to the air inlet pipe port 3 by bolts, the top of the injection pipe 5 is fixedly installed with the air collecting hood 7, one side of the air collecting hood 7 is open, the air collecting hood 7 is connected to the injection pipe 5, and the open side of the air collecting hood 7 is fixedly installed with a protective grid 6, which is fitted with the air inlet of the car hood.

[0034] The natural wind injection mechanism 4 further includes an air guide protrusion 28, which is located directly below the air inlet port 3 and is mounted on the second sealing shell 27. Both sides of the air guide protrusion 28 are gradually inclined downward from the middle to the end. Specifically, the air guide protrusion 28 can guide the injected natural wind, so that the natural wind fills the natural wind flow channel 22, accelerating the flow rate of the natural wind flow channel 22.

[0035] In summary: in actual use, when the vehicle is in use, the air cooling chamber is driven by the movement of the vehicle, causing natural wind to enter the natural wind flow channel 22, and the exhaust manifold body 2 is preferentially cooled by air cooling. When the temperature of the exhaust manifold body 2 rises and the temperature sensor value reaches the set value, the solenoid valve connected to the liquid inlet pipe 14 opens, and the coolant of the car enters the liquid cooling chamber, thereby reducing the temperature of the exhaust manifold body 2 by liquid cooling.

[0036] When the vehicle is moving, natural wind is injected into the air inlet of the car hood, and the natural wind injection mechanism 4 guides the wind into the air cooling chamber, and at the same time causes the natural wind to flow in the natural wind flow channel 22, and the temperature conducted in the liquid cooling chamber is cooled by the flowing natural wind, and the heat transfer medium in the liquid cooling chamber is in a circulating flow state.

[0037] After an independent coolant circulation system is installed on the vehicle, if the temperature of the exhaust manifold body 2 still cannot be lowered to a specified stable level, the independent coolant circulation system is turned on, and the coolant of the vehicle is cooled using the coolant of the independent cooling system, which can not only cool the exhaust manifold body 2, but also prevent the engine temperature from being too high.

Claims

1. A water-jacketed cast exhaust manifold, comprising an exhaust manifold body (2) and a cooling mechanism (1) arranged outside the exhaust manifold body (2), characterized in that: The cooling mechanism (1) comprises an air cooling chamber and a liquid cooling chamber. The liquid cooling chamber is arranged outside the exhaust manifold body (2) and covers the exhaust manifold body (2). A liquid cooling chamber is arranged between the liquid cooling chamber and the exhaust manifold body (2). The liquid inlet and the liquid outlet of the liquid cooling chamber are used to communicate with the cooling system of the vehicle. The air cooling chamber covers the outside of the liquid cooling chamber, and the air cooling chamber and the liquid cooling chamber are arranged at an interval. A natural wind flow channel (22) is formed between the air cooling chamber and the liquid cooling chamber. The air cooling chamber is connected to a natural wind injection mechanism (4).

2. A water-jacketed cast exhaust manifold according to claim 1, characterized in that: The exhaust manifold body (2) comprises a mounting hole (8), an intake branch pipe (10), an exhaust branch pipe (11) and an exhaust channel pipe (12); the exhaust branch pipe (11) and the intake branch pipe (10) are respectively arranged on opposite sides of the exhaust channel pipe (12) and are both connected to the exhaust channel pipe (12); the number of the intake branch pipes (10) is four groups and they are arranged in an equidistant manner.

3. A water-jacketed cast exhaust manifold according to claim 1, characterized in that: The air cooling chamber comprises a first mounting shell (16), a second mounting shell (17), an air outlet (13) and a natural wind injection mechanism (4); the first mounting shell (16) and the second mounting shell (17) are detachably connected and are arranged outside the liquid cooling chamber; the air outlet (13) is provided at the bottom of the first mounting shell (16), and the natural wind injection mechanism (4) is fixedly installed at the center of the top of the second mounting shell (17).

4. A water-jacketed cast exhaust manifold according to claim 3, characterized in that: The natural wind injection mechanism (4) comprises a wind collecting hood (7), a protective grid (6) and an injection pipe (5); the bottom end of the injection pipe (5) is fixedly connected to the air inlet pipe opening (3); the top end of the injection pipe (5) is fixedly installed with the wind collecting hood (7); one side of the wind collecting hood (7) is open; the wind collecting hood (7) is connected to the injection pipe (5); and the protective grid (6) is installed on the open side of the wind collecting hood (7).

5. A water-jacketed cast exhaust manifold according to claim 1, characterized in that: The liquid cooling chamber comprises a first sealing shell (24), a second sealing shell (27), a drain pipe (26) and a liquid inlet pipe (14); the first sealing shell (24) and the second sealing shell (27) are detachably connected and enclose the exhaust manifold body (2) therein; the drain pipe (26) is fixedly mounted on the top of the second sealing shell (27); the liquid inlet pipe (14) is fixedly mounted on the bottom of the first sealing shell (24); and the liquid inlet pipe (14) and the drain pipe (26) are respectively arranged at two ends of the exhaust manifold body (2).

6. A water-jacketed cast exhaust manifold according to claim 4, characterized in that: The natural wind injection mechanism (4) further comprises an air guide protrusion (28), wherein the air guide protrusion (28) is located directly below the air inlet pipe opening (3), and both sides of the air guide protrusion (28) are gradually inclined downward from the middle to the end.

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