EGR cooler of methanol engine

Abstract

The utility model discloses a methanol engine EGR cooler, and particularly relates to the technical field of methanol engine cooling, the methanol engine EGR cooler comprises a shell assembly, a baffling assembly is arranged in the shell assembly, the shell assembly comprises an outer shell, one side of the top end of the outer shell is fixedly provided with a flow dividing air inlet, and the other side of the top end of the outer shell is fixedly provided with a flow dividing air outlet; according to the EGR cooler for the methanol engine, the baffling effect on waste gas can be achieved through the heat conduction baffle plates, the flowing path length of the waste gas in the gas passing cooling vertical groove is prolonged, and the heat exchange time of the waste gas and the heat conduction baffle plates and the heat exchange time of the waste gas and the inner wall of the gas passing cooling vertical groove are prolonged; heat in waste gas can be conveniently guided into the cooling liquid groove, the cooling effect of the cooler is improved, meanwhile, all heat conduction baffle plates can be driven to rotate under the action of a servo motor, the inclination angles of the heat conduction baffle plates can be adjusted, the cooling time of the waste gas in the gas passing cooling vertical groove can be changed, and the cooling effect of the cooler is improved. Therefore, the device can adapt to different working environments.

Description

Technical Field

[0001] This utility model relates to the field of methanol engine cooling technology, specifically to a methanol engine EGR cooler. Background Technology

[0002] A methanol-fueled engine is an internal combustion engine that uses methanol as its primary fuel. Its main advantages include minimal modifications to the original engine and less air pollution.

[0003] Building upon the first-generation technology, EGR (high-pressure EGR) is achieved by introducing high-pressure exhaust gas from before the turbocharger into the combustion chamber to reduce combustion temperature and achieve greater power output. The third-generation technology is currently being explored in the field of heavy-duty truck natural gas engines. Unlike the second-generation technology which introduces high-pressure EGR, the third-generation technology achieves EGR (low-pressure EGR) by introducing low-pressure exhaust gas from after-treatment into the combustion chamber. This allows the engine to obtain more EGR exhaust gas in the low-speed range, thereby achieving greater power and torque output.

[0004] EGR refers to Exhaust Gas Recirculation technology. Exhaust Gas Recirculation technology involves using an EGR valve to draw a portion of the exhaust gas produced by the engine and mix it with fresh air, allowing this portion of exhaust gas and fresh air to re-enter the engine cylinders for combustion. This technology can significantly reduce nitrogen oxides in engine exhaust, thus enabling the engine to meet emission standards. The exhaust gas recirculation system includes an EGR cooler for cooling the exhaust gas before recirculation. Exhaust gas is introduced into the EGR cooler through an interface, where the coolant in the EGR cooler exchanges heat with the hot exhaust gas, cooling it and thus lowering the combustion chamber temperature, improving engine efficiency, and reducing combustion emissions.

[0005] However, existing methanol engine EGR coolers still have some shortcomings in actual use. For example, during the exhaust gas circulation cooling process, they cannot improve the cooling path of the exhaust gas within the limited cooling channel, and cannot adjust the cooling time of the exhaust gas in the cooler according to actual needs. This results in a short cooling time, low heat exchange efficiency, and mediocre exhaust gas cooling effect. They are unable to effectively reduce the temperature of the combustion chamber, and the temperature reduction of the combustion chamber is small. Utility Model Content

[0006] The purpose of this invention is to provide an EGR cooler for a methanol engine to solve the problems mentioned in the background art.

[0007] To achieve the above object, the present utility model provides the following technical solutions: A methanol engine EGR cooler, comprising a housing assembly. A baffle assembly is provided inside the housing assembly. The housing assembly includes an outer housing. One side of the top end of the outer housing is fixedly installed with a shunt air inlet. In the middle of the inner bottom end of the shunt air inlet, a shunt block is fixedly installed. A coolant tank is provided inside the outer housing. The front and rear parts of the top surface of the outer housing are both provided with air-cooling vertical grooves;

[0008] The baffle assembly includes two mounting plates. A threaded vertical rod is rotatably installed between the two mounting plates. A lifting inclined plate is threadedly sleeved on the rod body of the threaded vertical rod. Tooth plates are fixedly installed at both ends of the lifting inclined plate. The top and bottom of the tooth surfaces of the two tooth plates are both meshed with driven gears. The centers of the tooth surfaces of the four driven gears are fixedly inserted with rotating shafts. Two heat-conducting baffle plates are fixedly installed on the rod bodies of the four rotating shafts.

[0009] Preferably, the two mounting plates are respectively fixedly installed at the top and bottom of the middle part of the back surface of the outer housing. The four rotating shafts are respectively rotatably installed at the four corners inside the outer housing. Four heat-conducting baffle plates are provided in each of the two air-cooling vertical grooves.

[0010] Preferably, the coolant tank is arranged in a shape like the Chinese character 'Ri'. The bottom of the shunt air inlet is communicated with the inner tops of the two air-cooling vertical grooves.

[0011] Preferably, liquid pipes are fixedly installed at one corner of the top and bottom surfaces of the outer housing. The two liquid pipes are arranged diagonally, and both are communicated with the inside of the coolant tank.

[0012] Preferably, a servo motor is fixedly installed on the bottom surface of the mounting plate at the bottom. The top end of the output shaft of the servo motor is fixedly connected to the bottom end of the threaded vertical rod.

[0013] Preferably, the two tooth plates are respectively slidably installed on both sides of the back surface of the outer housing. The four heat-conducting baffle plates provided in the same air-cooling vertical groove are arranged in a staggered and inclined manner.

[0014] Preferably, both ends of the lifting inclined plate are fixedly connected to the middle parts of the tooth surfaces of the two tooth plates.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] This methanol engine EGR cooler uses heat-conducting baffles to deflect exhaust gas, extending the flow path of the exhaust gas within the cooling trough and prolonging the heat exchange time between the exhaust gas and the heat-conducting baffles and the inner wall of the cooling trough. This facilitates the transfer of heat from the exhaust gas to the coolant tank, effectively improving the cooler's cooling performance. Furthermore, the servo motor drives the heat-conducting baffles to rotate, adjusting their tilt angle and thus altering the cooling time of the exhaust gas within the cooling trough. This allows the cooler to adapt to different operating environments, enhancing its practicality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0018] Figure 2 This is a cross-sectional three-dimensional structural diagram of the present invention;

[0019] Figure 3 This is a three-dimensional structural diagram of the internal structure of the housing assembly of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the baffle component of this utility model.

[0021] In the diagram: 1. Shell assembly; 101. Outer shell; 102. Flow inlet; 103. Flow divider block; 104. Coolant tank; 105. Passive cooling vertical groove; 106. Liquid passage pipe; 2. Baffle assembly; 201. Mounting plate; 202. Threaded vertical rod; 203. Servo motor; 204. Lifting ramp; 205. Gear plate; 206. Driven gear; 207. Rotating shaft; 208. Sleeve insert shaft; 209. Heat-conducting baffle plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1-4As shown in the figure, the utility model provides a technical solution: including a housing component 1, inside which a baffle component 2 is arranged. The housing component 1 includes an outer housing 101. On one side of the top end of the outer housing 101, a shunt air inlet 102 is fixedly installed. In the middle of the inner bottom end of the shunt air inlet 102, a shunt block 103 is fixedly installed. A coolant tank 104 is formed inside the outer housing 101. Vertical air-cooling grooves 105 are formed in the front and rear parts of the top surface of the outer housing 101.

[0024] The baffle component 2 includes two mounting plates 201. A threaded vertical rod 202 is rotatably installed between the two mounting plates 201. An elevating inclined plate 204 is threadedly sleeved on the rod body of the threaded vertical rod 202. Tooth plates 205 are fixedly installed at both ends of the elevating inclined plate 204. Driving gears 206 are meshed with the top and bottom tooth surfaces of the two tooth plates 205. Rotating shafts 207 are fixedly inserted into the centers of the tooth surfaces of the four driving gears 206. Socket-embedded shafts 208 are fixedly sleeved on the rod bodies of the four rotating shafts 207. Two heat-conducting baffle plates 209 are fixedly installed on the rod bodies of the four socket-embedded shafts 208. The inner walls of several heat-conducting baffle plates 209 and the vertical air-cooling grooves 105 are made of CU material, having good heat-conducting performance.

[0025] The two mounting plates 201 are respectively fixedly installed at the top and bottom of the middle part of the back surface of the outer housing 101. The four rotating shafts 207 are respectively rotatably installed at the four corners inside the outer housing 101. Four heat-conducting baffle plates 209 are arranged in each of the two vertical air-cooling grooves 105. The rotating interfaces of the rotating shafts 207 and the socket-embedded shafts 208 with the outer housing 101 are rotatably connected through sealed bearings.

[0026] In this embodiment, the coolant tank 104 is arranged in a shape of a Chinese character 'Ri'. The bottom of the shunt air inlet 102 is communicated with the inner top parts of the two vertical air-cooling grooves 105.

[0027] At the same time, liquid pipes 106 are fixedly installed at one corner of the top and bottom surfaces of the outer housing 101 respectively. The two liquid pipes 106 are arranged diagonally. And the two liquid pipes 106 are both communicated with the inside of the coolant tank 104. An external circulation device is connected through the two liquid pipes 106, and the coolant is circulated and supplied into the coolant tank 104 through the circulation device.

[0028] A servo motor 203 is fixedly mounted on the bottom surface of the mounting plate 201 located at the bottom. The top end of the output shaft of the servo motor 203 is fixedly connected to the bottom end of the threaded vertical rod 202. The two ends of the lifting inclined plate 204 are fixedly connected to the middle of the tooth surface of the two toothed plates 205 respectively. The rotation of the threaded vertical rod 202 can drive the lifting inclined plate 204 to rise and fall. The rise and fall of the lifting inclined plate 204 can drive the toothed plates 205 to rise and fall. The rise and fall of the toothed plates 205 can drive the driven gear 206 to rotate. The rotation of the driven gear 206 can cause the rotating shaft 207 and the sleeved embedded shaft 208 to rotate. The rotation of the sleeved embedded shaft 208 can drive the rotation of each heat-conducting baffle 209, thereby adjusting their tilt angle and changing the cooling time of the exhaust gas in the exhaust cooling vertical groove 105.

[0029] The two toothed plates 205 are slidably installed on both sides of the back of the outer shell 101. The four heat-conducting baffles 209 arranged in the same air-cooling vertical groove 105 are staggered and inclined. The heat-conducting baffles 209 can deflect the exhaust gas, prolong the flow path of the exhaust gas in the air-cooling vertical groove 105, and prolong the heat exchange time between the exhaust gas and the heat-conducting baffles 209 and the inner wall of the air-cooling vertical groove 105.

[0030] In use, a circulation device can be connected to two liquid pipes 106 to circulate coolant into the coolant tank 104. After the coolant is injected, the exhaust gas enters from the front-end pipe into the split inlet 102, and is then divided into two parts by the splitter block 103. The two parts of exhaust gas will enter a separate air-cooling vertical trough 105. The heat-conducting baffle 209 can deflect the exhaust gas, prolonging the flow path of the exhaust gas in the air-cooling vertical trough 105 and extending the heat exchange time between the exhaust gas and the heat-conducting baffle 209 and the inner wall of the air-cooling vertical trough 105. This facilitates the transfer of heat from the exhaust gas to the coolant tank 104, allowing the coolant to absorb the heat from the exhaust gas and effectively improving the cooling effect of the cooler. Furthermore, it can be adjusted according to the actual usage scenario. The tilt angle of the heat-conducting baffle 209 can be adjusted to change the air passage time of the exhaust gas in the air-cooling vertical trough 105, making it adaptable to different working environments. The specific adjustment steps are as follows: Start the servo motor 203. Under the action of the servo motor 203, the threaded vertical rod 202 rotates. The rotation of the threaded vertical rod 202 drives the lifting inclined plate 204 to rise and fall. The rise and fall of the lifting inclined plate 204 drives the toothed plate 205 to rise and fall. The rise and fall of the toothed plate 205 drives the driven gear 206 to rotate. The rotation of the driven gear 206 causes the rotating shaft 207 and the sleeved embedded shaft 208 to rotate. The rotation of the sleeved embedded shaft 208 drives each heat-conducting baffle 209 to rotate, thereby adjusting their tilt angle and changing the cooling time of the exhaust gas in the air-cooling vertical trough 105.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A methanol engine EGR cooler, characterized in that... : It includes a housing component (1), and a baffle component (2) is arranged inside the housing component (1). The housing component (1) includes an outer housing (101). On one side of the top end of the outer housing (101), a shunt air inlet (102) is fixedly installed. In the middle of the inner bottom end of the shunt air inlet (102), a shunt block (103) is fixedly installed. A coolant tank (104) is formed inside the outer housing (101). On the front and rear parts of the top surface of the outer housing (101), air passing cooling vertical grooves (105) are formed. The baffle component (2) includes two mounting plates (201). A threaded vertical rod (202) is rotatably installed between the two mounting plates (201). A lifting inclined plate (204) is threadedly sleeved on the rod body of the threaded vertical rod (202). Tooth plates (205) are fixedly installed at both ends of the lifting inclined plate (204). Driving gears (206) are meshed and connected to the top and bottom of the tooth surfaces of the two tooth plates (205). Shafts (207) are fixedly inserted into the centers of the tooth surfaces of the four driving gears (206). Sleeve inserted shafts (208) are fixedly sleeved on the rod bodies of the four shafts (207). Two heat conducting baffle plates (209) are fixedly installed on the rod bodies of the four sleeve inserted shafts (208).

2. The methanol engine EGR cooler according to claim 1, characterized in that, The two mounting plates (201) are respectively fixedly installed on the top and bottom of the middle part of the back surface of the outer housing (101). The four shafts (from the four corners of the inner part of the outer housing (101). Four heat conducting baffle plates (209) are arranged in each of the two air passing cooling vertical grooves (105).

3. The methanol engine EGR cooler according to claim 1, characterized in that, The coolant tank (104) is arranged in a shape like the Chinese character 'Ri'. The bottom of the shunt air inlet (102) is connected to the inner top parts of the two air passing cooling vertical grooves (105).

4. The methanol engine EGR cooler according to claim 1, characterized in that, Liquid through pipes (106) are fixedly installed at one corner of the top and bottom surfaces of the outer housing (101). The two liquid through pipes (106) are arranged diagonally, and both of the two liquid through pipes (106) are connected to the inside of the coolant tank (104).

5. A methanol engine EGR cooler according to claim 1, characterized in that, A servo motor (203) is fixedly installed on the bottom surface of the mounting plate (201) located at the bottom. The top end of the output shaft of the servo motor (203) is fixedly connected to the bottom end of the threaded vertical rod (202).

6. The methanol engine EGR cooler according to claim 1, characterized in that, The two tooth plates (205) are respectively slidably installed on both sides of the back surface of the outer housing (101). The four heat conducting baffle plates (209) arranged in the same air passing cooling vertical groove (105) are arranged in a staggered and inclined manner.

7. A methanol engine EGR cooler according to claim 1, characterized in that, Both ends of the lifting inclined plate (204) are fixedly connected to the middle parts of the tooth surfaces of the two tooth plates (205).

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