Engine cooling device

Abstract

The utility model relates to the technical field of automobile parts, in particular to an engine cooling device which comprises a cooling water pump mechanism used for an automobile engine, a radiator mechanism and a thermostat, the cooling water pump mechanism comprises a water pump body, and a cooling fan acting on the radiator mechanism is movably installed at one end of the water pump body through a linkage assembly. The water pump body is in through connection with the radiator mechanism and the thermostat through the cooling liquid pipe and the low-temperature small circulating liquid pipe respectively, the thermostat is in through connection with the radiator mechanism through the high-temperature large circulating liquid pipe, the whole device can take away heat of an engine, the temperature is kept within a proper range when the engine operates, and the service life of the engine is prolonged. The engine is sufficient in power and low in oil consumption, knocking is prevented, and the rejection rate is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to an engine cooling device. Background Art

[0002] The temperature of a car engine during the combustion process is very high. This is because of the high temperature and high pressure generated during the combustion process. The temperature inside the combustion chamber of a car engine can reach more than one thousand degrees, and the temperature of the car's exhaust can also reach several hundred degrees. The reason why the temperature inside the engine's combustion chamber is so high is, on the one hand, the heat generated by the combustion of the fuel, and on the other hand, the heat generated by the friction of the high-speed rotating parts inside the engine. When the engine temperature is too high, the temperature of the air entering the engine is also high, resulting in a reduction in the actual amount of air entering the engine, thereby reducing the engine's charging efficiency, power and torque, which is manifested as Insufficient power. Secondly, under high temperature conditions, lubricating oil is prone to generate colloid carbon deposits in a high temperature and oxygen-deficient environment. The carbon deposits will accumulate on the piston top, combustion chamber wall, valve top and spark plug, forming hot spots, causing abnormal combustion, resulting in increased fuel consumption. At the same time, the temperature in the combustion chamber can easily reach the ignition point of gasoline and diesel, thereby igniting the mixture, causing detonation, affecting the normal operation of the engine, and high temperature will cause the lubricating oil to oxidize and deteriorate. The colloid and sediment will adhere to the friction surfaces of parts such as piston rings and cylinder walls, reducing thermal conductivity and lubricity, and aggravating the wear of parts. Finally, long-term high temperature operation may cause damage to internal parts of the engine, or even scrapping.

[0003] Therefore, it is necessary to design an engine cooling device that can take away the heat of the engine and keep the temperature of the engine within a suitable range when the engine is running to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide an engine cooling device, which drives a water pump body and a cooling fan to work under the action of an engine crankshaft through a linkage component. Under the action of the water pump body, the coolant enters the interior of the engine water jacket through the coolant pipe, takes away the heat inside the engine, and then enters the thermostat. Under the action of the thermostat, the coolant pipe, the low-temperature small circulation liquid pipe, and the high-temperature large circulation liquid pipe are combined to realize small circulation, small circulation, large circulation, and large circulation in sequence. In the large circulation process, the radiator mechanism and the cooling fan are used to dissipate the coolant heat, and the circulation is continuous, so that the heat of the engine can be taken away, so that the temperature of the engine is maintained within an appropriate range when it is running, so that the engine has sufficient power and low fuel consumption, and detonation is prevented, and the scrap rate is greatly reduced, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] An engine cooling device includes a cooling water pump mechanism, a radiator mechanism and a thermostat for an automobile engine. The cooling water pump mechanism includes a water pump body. A cooling fan acting on the radiator mechanism is movably mounted at one end of the water pump body through a linkage assembly. The water pump body and the radiator mechanism and the thermostat are respectively connected through a coolant pipe and a low-temperature small circulation liquid pipe. The thermostat and the radiator mechanism are connected through a high-temperature large circulation liquid pipe.

[0007] As a preferred solution of the present invention, the water pump body is connected to the engine water jacket at one end away from the linkage assembly through a liquid inlet connector. The linkage assembly includes a pump shaft, a driven pulley, a transmission pulley and a transmission belt. The outer surface of the cooling fan is provided with a mounting frame.

[0008] As a preferred solution of the present invention, the pump shaft is movably installed inside the water pump body, and the pump shaft extends to the outside of the water pump body at one end close to the cooling fan, the pump shaft and the upper shaft hole of the cooling fan are fixedly connected by a fan connecting key, the driven pulley is fixedly sleeved on the outer surface of the pump shaft close to the cooling fan, the driven pulley and the transmission pulley are connected by a transmission belt, and the transmission pulley is fixedly connected to the shaft end of the engine crankshaft.

[0009] As a preferred solution of the present invention, the thermostat and the engine water jacket are through-connected by a liquid return connector, a support frame is fixedly installed inside the thermostat, a large circulation valve is movably installed inside the support frame near the top, a paraffin container is embedded in the center of the large circulation valve, a piston is movably installed inside the paraffin container, an upper push rod is embedded in the top of the piston, a lower push rod is fixedly connected to the center of the bottom surface of the paraffin container, a small circulation valve is movably sheathed on the outer surface of the lower push rod near the bottom end, and a spring is movably sheathed on the outer surface of the lower push rod near the top of the small circulation valve and on the outer surface of the paraffin container near the bottom of the large circulation valve.

[0010] As a preferred solution of the present invention, the small circulation valve is located at the bottom of the support frame, the top end of the upper push rod extends to the inner top end of the support frame, and the inner bottom surface of the support frame is penetrated by a through hole adapted to the paraffin container.

[0011] As a preferred solution of the present invention, the radiator mechanism includes a radiator core, a water inlet chamber and a water outlet chamber, and the water inlet chamber and the water outlet chamber are respectively installed at the top end and the bottom end of the radiator core.

[0012] As a preferred solution of the present invention, a protective shell is fixedly installed on the outer surface of the radiator core near the water inlet chamber and the water outlet chamber, and heat dissipation openings are opened on both sides of the protective shell. A protective net is fixedly installed on the side of the heat dissipation opening away from the radiator core by fixing screws.

[0013] As a preferred solution of the present invention, a water inlet connection terminal and a water outlet connection terminal are respectively provided at one end of the top surface of the water inlet chamber and one end of the bottom surface of the water outlet chamber, and an expansion water tank is connected to one side of the water inlet chamber through a superheating pipe.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] In the utility model, the linkage component is set to drive the water pump body and the cooling fan to work under the action of the engine crankshaft. Under the action of the water pump body, the coolant enters the interior of the engine water jacket through the coolant pipe, takes away the heat inside the engine, and then enters the thermostat. Under the action of the thermostat, the coolant pipe, the low-temperature small circulation liquid pipe, and the high-temperature large circulation liquid pipe are combined to realize small circulation, small circulation, large circulation, and large circulation in sequence. In the large circulation process, the radiator mechanism and the cooling fan are used to dissipate the coolant heat, and the cycle is continuous, so that the heat of the engine can be taken away, so that the temperature of the engine is maintained within an appropriate range when it is running, so that the engine has sufficient power and low fuel consumption, and detonation is prevented, and the scrap rate is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the cooling water pump mechanism in the present utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the radiator mechanism in the present utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the thermostat in the present invention;

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the linkage component in the present utility model.

[0021] Figure: 1. Cooling water pump mechanism; 2. Radiator mechanism; 21. Radiator core; 211. Protective housing; 212. Heat dissipation opening; 213. Fixing screws; 214. Protective net; 22. Water inlet chamber; 221. Water inlet connection terminal; 222. Superheat pipe; 223. Expansion tank; 23. Water outlet chamber; 231. Water outlet connection terminal; 3. Thermostat; 31. Liquid return connector; 32. Support frame; 33. Large circulation valve; 34. Paraffin container; 35. Piston; 36. Upper push rod; 37. Lower push rod; 38. Small circulation valve; 39. Spring; 4. Water pump body; 41. Liquid inlet connector; 5. Linkage assembly; 51. Pump shaft; 52. Driven pulley; 53. Drive pulley; 54. Drive belt; 55. Fan connecting key; 6. Cooling fan; 61. Mounting frame; 7. Coolant pipe; 8. Low-temperature small circulation liquid pipe; 9. High-temperature large circulation liquid pipe. DETAILED DESCRIPTION

[0022] The following will combine 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, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] Example:

[0024] The embodiment of the utility model provides an engine cooling device, which drives a water pump body and a cooling fan to work under the action of the engine crankshaft through a linkage component. Under the action of the water pump body, the coolant enters the interior of the engine water jacket through the coolant pipe, takes away the heat inside the engine, and then enters the thermostat. Under the action of the thermostat, the coolant pipe, the low-temperature small circulation liquid pipe, and the high-temperature large circulation liquid pipe are combined to realize small circulation, small circulation, large circulation, and large circulation in sequence. During the large circulation process, the coolant is dissipated by the radiator mechanism and the cooling fan, and the coolant is continuously circulated, thereby taking away the heat of the engine and keeping the temperature of the engine within an appropriate range when it is running, so that the engine has sufficient power and low fuel consumption, and detonation is prevented, and the scrap rate is greatly reduced, so as to solve the problems raised in the above-mentioned background technology;

[0025] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0026] An engine cooling device includes a cooling water pump mechanism 1, a radiator mechanism 2 and a thermostat 3 for an automobile engine. The cooling water pump mechanism 1 includes a water pump body 4. A cooling fan 6 acting on the radiator mechanism 2 is movably installed at one end of the water pump body 4 through a linkage component 5. The water pump body 4 and the radiator mechanism 2 and the thermostat 3 are respectively connected through a coolant pipe 7 and a low-temperature small circulation liquid pipe 8. The thermostat 3 and the radiator mechanism 2 are connected through a high-temperature large circulation liquid pipe 9. When the engine is running, under the action of the crankshaft, the linkage component 5 drives the water pump body 4 and the cooling fan 6 to work. Under the action of the water pump body 4, the coolant enters the interior of the engine water jacket through the coolant pipe 7, takes away the heat inside the engine, and then enters the thermostat 3. Under the action of the thermostat 3, small circulation, small circulation, large circulation, and large circulation are realized in sequence. When the small circulation is in progress, the thermostat 3 is closed and the coolant passes through the low-temperature small circulation The liquid pipe 8 flows back to the inside of the water pump body 4 to realize a small circulation. When the small circulation and the large circulation are in progress, the thermostat 3 is half-open, and the coolant is divided and transported by the low-temperature small circulation liquid pipe 8 and the high-temperature large circulation liquid pipe 9 respectively. At this time, the coolant transported by the high-temperature large circulation liquid pipe 9 will pass through the radiator mechanism 2 and realize efficient heat dissipation under the action of the cooling fan 6, and finally circulate to the water pump body 4 through the coolant pipe 7, while the coolant inside the low-temperature small circulation liquid pipe 8 automatically flows back to the inside of the water pump body 4. When the large circulation is in progress, the thermostat 3 is opened, and the coolant directly transported by the high-temperature large circulation liquid pipe 9 will pass through the radiator mechanism 2 and realize efficient heat dissipation under the action of the cooling fan 6, and finally circulate to the water pump body 4 through the coolant pipe 7, and circulate continuously, thereby being able to take away the heat of the engine, so that the temperature of the engine is maintained within an appropriate range when it is running, so that the engine has sufficient power, low fuel consumption, prevents detonation, and greatly reduces the scrap rate;

[0027] Among them, the radiator mechanism 2 includes a radiator core 21, a water inlet chamber 22 and a water outlet chamber 23. The water inlet chamber 22 and the water outlet chamber 23 are respectively installed at the top and bottom ends of the radiator core 21. The thermostat 3 and the engine water jacket are connected through a return liquid connector 31. The end of the water pump body 4 away from the linkage assembly 5 is connected to the engine water jacket through a liquid inlet connector 41. The linkage assembly 5 includes a pump shaft 51, a driven pulley 52, a transmission pulley 53 and a transmission belt 54. The outer surface of the cooling fan 6 is provided with a mounting frame 61. The design of the return liquid connector 31 and the liquid inlet connector 41 facilitates the through-connection of the thermostat 3, the water pump body 4 and the engine water jacket to achieve circulation.

[0028] In addition, in this embodiment, please refer to Figure 3A protective shell 211 is fixedly installed on the outer surface of the radiator core 21, near the water inlet chamber 22 and the water outlet chamber 23. Heat dissipation openings 212 are opened on both sides of the protective shell 211. A protective net 214 is fixedly installed on the side of the heat dissipation opening 212 away from the radiator core 21 by fixing screws 213. The design of the protective shell 211, the heat dissipation opening 212 and the protective net 214 can ensure that the coolant dissipates heat quickly while protecting the radiator core 21, thereby reducing machine damage.

[0029] In addition, in this embodiment, please refer to Figure 3 A water inlet connection terminal 221 and a water outlet connection terminal 231 are respectively provided at one end of the top surface of the water inlet chamber 22 and one end of the bottom surface of the water outlet chamber 23. An expansion water tank 223 is connected to one side of the water inlet chamber 22 via an overheating pipe 222. The design of the overheating pipe 222 and the expansion water tank 223 can store the expansion liquid. When the engine cools down, the stored expansion liquid will be re-absorbed under a vacuum state, thereby achieving the effects of pressure stabilization and unloading, buffering, water-gas separation, and water replenishment.

[0030] In addition, in this embodiment, please refer to Figure 4 , a support frame 32 is fixedly installed inside the thermostat 3, and a large circulation valve 33 is movably installed inside the support frame 32 near the top, and a paraffin container 34 is embedded in the center of the large circulation valve 33, and a piston 35 is movably installed inside the paraffin container 34. An upper push rod 36 is embedded on the top of the piston 35, and a lower push rod 37 is fixedly connected to the center of the bottom surface of the paraffin container 34. A small circulation valve 38 is movably sheathed on the outer surface of the lower push rod 37 near the bottom end, and a spring 39 is movably sheathed on the outer surface of the lower push rod 37 near the top of the small circulation valve 38 and the outer surface of the paraffin container 34 near the bottom of the large circulation valve 33. The small circulation valve 38 is located at the bottom of the support frame 32, and the top of the upper push rod 36 extends to the inner top of the support frame 32. The inner bottom surface of the support frame 32 is penetrated by a perforation adapted to the paraffin container 34. The state of the paraffin inside the paraffin container 34 directly determines the opening and closing of the thermostat 3. When the coolant temperature is low, the paraffin is solid, the small circulation valve 38 is opened, and the small circulation is performed. When the coolant temperature rises, the paraffin partially melts and expands. At this time, the piston 35 is compressed, and the upper push rod 36 is pushed upward. Since the support frame 32 is fixed, under the reaction force, the paraffin container 34 moves downward, and the large circulation valve 33 is half opened, and the small circulation and large circulation are performed. When the coolant temperature is high, the paraffin completely melts and expands. At this time, the paraffin container 34 continues to move downward, the small circulation valve 38 is closed, and the large circulation valve 33 is fully opened to perform the large circulation, so that the temperature of the engine is maintained within a suitable range when it is running.

[0031] In addition, in this embodiment, please refer to Figure 5The pump shaft 51 is movably installed inside the water pump body 4, and the end of the pump shaft 51 near the cooling fan 6 extends to the outside of the water pump body 4. The pump shaft 51 and the shaft hole on the cooling fan 6 are fixedly connected by a fan connecting key 55. The driven pulley 52 is fixedly sleeved on the outer surface of the pump shaft 51 near the cooling fan 6. The driven pulley 52 and the transmission pulley 53 are connected by a transmission belt 54. The transmission pulley 53 is fixedly connected to the shaft end of the engine crankshaft. When the engine is running, under the action of the engine crankshaft, the transmission pulley 53 starts to rotate and drives the driven pulley 52 through the transmission belt 54. At this time, the pump shaft 51 runs accordingly. At this time, the water pump body 4 and the cooling fan 6 run at the same time. The design of the linkage component 5 can make the overall device do not need to have a separate power source. It can run and stop at the same time as the engine, which is energy-saving and environmentally friendly.

[0032] In this embodiment, the implementation scenario is specifically as follows: when the engine is running, under the action of the engine crankshaft, the drive pulley 53 starts to rotate, and drives the driven pulley 52 through the drive belt 54. At this time, the pump shaft 51 runs accordingly. At this time, the water pump body 4 and the cooling fan 6 are running at the same time. Under the action of the water pump body 4, the coolant enters the engine water jacket through the coolant pipe 7, takes away the heat inside the engine, and then enters the thermostat 3. Under the action of the thermostat 3, small circulation, small circulation and large circulation, large circulation are realized in sequence. When the coolant temperature is low, the paraffin is solid, and the small circulation valve 38 is opened to perform a small circulation. The coolant flows back to the inside of the water pump body 4 through the low-temperature small circulation liquid pipe 8 to realize a small circulation. When the coolant temperature rises, the paraffin partially melts and expands. At this time, the piston 35 is pressurized, and the upper push rod 36 is pushed upward. Since the support frame 32 is fixed, under the reaction force, the paraffin container 34 moves downward, and the large circulation valve 33 is half open to perform a small circulation and a large circulation. The coolant is diverted and The cooling liquid is respectively transported by the low-temperature small circulation liquid pipe 8 and the high-temperature large circulation liquid pipe 9. At this time, the cooling liquid transported by the high-temperature large circulation liquid pipe 9 will enter the water inlet chamber 22, pass through the radiator core 21, and realize efficient heat dissipation under the action of the cooling fan 6, and be discharged from the water outlet chamber 23, and finally circulate to the water pump body 4 through the cooling liquid pipe 7, while the cooling liquid inside the low-temperature small circulation liquid pipe 8 automatically flows back to the inside of the water pump body 4. When the coolant is high in temperature, the paraffin completely melts and expands. At this time, the paraffin container 34 continues to move downward, the small circulation valve 38 is closed, and the large circulation valve 33 is fully opened for large circulation. The cooling liquid is directly transported by the high-temperature large circulation liquid pipe 9 to the water inlet chamber 22, pass through the radiator core 21, and realize efficient heat dissipation under the action of the cooling fan 6, and be discharged from the water outlet chamber 23, and finally circulate to the water pump body 4 through the cooling liquid pipe 7, and circulate continuously, thereby being able to take away the heat of the engine, so that the temperature of the engine is maintained within a suitable range when it is running, so that the engine has sufficient power, low fuel consumption, and prevents detonation, greatly reducing the scrap rate.

[0033] 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An engine cooling device comprising a cooling water pump mechanism (1), a radiator mechanism (2) and a thermostat (3) for an automobile engine, characterized in that: The cooling water pump mechanism (1) comprises a water pump body (4), one end of which is movably provided with a cooling fan (6) for acting on a radiator mechanism (2) via a linkage assembly (5), the water pump body (4) and the radiator mechanism (2) and the thermostat (3) are connected through a cooling liquid pipe (7) and a low-temperature small circulation liquid pipe (8), respectively, and the thermostat (3) and the radiator mechanism (2) are connected through a high-temperature large circulation liquid pipe (9).

2. The engine cooling device according to claim 1, characterized in that: The water pump body (4) is connected to the engine water jacket via a liquid inlet connector (41) at one end away from the linkage assembly (5). The linkage assembly (5) includes a pump shaft (51), a driven pulley (52), a transmission pulley (53) and a transmission belt (54). The outer surface of the cooling fan (6) is sheathed with a mounting frame (61).

3. The engine cooling device according to claim 2, characterized in that: The pump shaft (51) is movably mounted inside the water pump body (4), and one end of the pump shaft (51) near the cooling fan (6) extends to the outside of the water pump body (4). The pump shaft (51) and the shaft hole on the cooling fan (6) are fixedly connected via a fan connecting key (55). The driven pulley (52) is fixedly sleeved on the outer surface of the pump shaft (51) near the cooling fan (6). The driven pulley (52) and the driving pulley (53) are connected by a transmission belt (54). The driving pulley (53) is fixedly connected to the shaft end of the engine crankshaft.

4. The engine cooling device according to claim 1, characterized in that: The thermostat (3) and the engine water jacket are connected through a liquid return connector (31). A support frame (32) is fixedly installed inside the thermostat (3). A large circulation valve (33) is movably installed near the top of the support frame (32). A paraffin container (34) is embedded in the center of the large circulation valve (33). A piston (35) is movably installed inside the paraffin container (34). An upper push rod (36) is embedded in the top of the piston (35). A lower push rod (37) is fixedly connected at the center of the bottom surface of the paraffin container (34). A small circulation valve (38) is movably sheathed on the outer surface of the lower push rod (37) near the bottom end. A spring (39) is movably sheathed on the outer surface of the lower push rod (37) near the top of the small circulation valve (38) and on the outer surface of the paraffin container (34) near the bottom of the large circulation valve (33).

5. The engine cooling device according to claim 4, characterized in that: The small circulation valve (38) is located at the bottom of the support frame (32), the top end of the upper push rod (36) extends to the inner top end of the support frame (32), and the inner bottom surface of the support frame (32) is penetrated by a through hole adapted to the paraffin container (34).

6. The engine cooling device according to claim 1, characterized in that: The radiator mechanism (2) comprises a radiator core (21), a water inlet chamber (22) and a water outlet chamber (23), wherein the water inlet chamber (22) and the water outlet chamber (23) are respectively installed through the top end and the bottom end of the radiator core (21).

7. The engine cooling device according to claim 6, characterized in that: A protective shell (211) is fixedly installed on the outer surface of the radiator core (21) between the water inlet chamber (22) and the water outlet chamber (23); heat dissipation openings (212) are provided on both sides of the protective shell (211); and a protective net (214) is fixedly installed on the side of the heat dissipation opening (212) away from the radiator core (21) via fixing screws (213).

8. The engine cooling device according to claim 6, characterized in that: A water inlet connection terminal (221) and a water outlet connection terminal (231) are respectively provided at one end of the top surface of the water inlet chamber (22) and one end of the bottom surface of the water outlet chamber (23). One side of the water inlet chamber (22) is connected to an expansion water tank (223) via a superheating pipe (222).

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