CN210859767U

CN210859767U - Gearbox cooling system and vehicle

Info

Publication number: CN210859767U
Application number: CN201921286281.6U
Authority: CN
Inventors: 王炜
Original assignee: BAIC Motor Co Ltd
Current assignee: BAIC Motor Co Ltd
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-06-26
Anticipated expiration: 2029-08-08

Abstract

The utility model discloses a gearbox cooling system and a vehicle, wherein a gearbox (10) of the gearbox cooling system comprises a first inlet (11) and a first outlet (12) for oil to enter and exit, and a water-cooling oil cooler (20) comprises a second inlet (21) and a second outlet (22) for cooling water to enter and exit; one end of the cooling oil pipe (40) is communicated with the first outlet (12) in a fluid mode, and the other end of the cooling oil pipe extends through the water-cooled oil cooler (20) and the air-cooled oil cooler (30) to be cooled and then is communicated with the first inlet (11) in a fluid mode; the first cooling water pipe (61) provides fluid communication between the second inlet (21) and a cooling water source, and the second outlet (22) is used for discharging cooling water provided by the cooling water source. The utility model discloses can prevent that fluid from blockking up the cooling oil pipe of water-cooling oil cooler, can also select different cooling modes according to the temperature of fluid, the cooling effect is good.

Description

Gearbox cooling system and vehicle

Technical Field

The utility model relates to a vehicle technical field specifically relates to a gearbox cooling system and vehicle.

Background

The automatic gearbox is used as a device for automatic speed changing and gear shifting of an automobile, equipment for cooling oil of the gearbox generally comprises an air-cooled oil cooler and a water-cooled oil cooler, the existing gearbox cooling system mostly adopts a single external air-cooled or water-cooled oil cooler, the air-cooled oil cooler is arranged on the upper portion or the lower portion of an engine compartment and is arranged in front of a radiator, and the water-cooled oil cooler is generally arranged on the gearbox. The traditional gearbox cooling system has the defects of single form, low efficiency, insufficient performance improvement space and the like. For solving above-mentioned problem, some present gearbox cooling system adopt the fluid of temperature control valve control gearbox to pass through air-cooled oil cooler or through the combination pipeline of water-cooled oil cooler and air-cooled oil cooler to reach the purpose of selecting different cooling methods according to the temperature of fluid, but this kind of gearbox cooling system still has the problem: when the fluid temperature of gearbox reduces and makes the temperature-sensing valve close water-cooling oil cooler, fluid only can flow through air-cooled oil cooler, and this fluid that just makes in the pipeline of water-cooling oil cooler no longer takes place to flow, if fluid stops for a long time and probably causes the pipeline to block up, when the water-cooling oil cooler is opened once more to the temperature-sensing valve, fluid hardly gets into water-cooling oil cooler once more, finally leads to the cooling effect to reach the expectation.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the problem that prior art exists, provide a gearbox cooling system and vehicle, can prevent that fluid from blockking up the cooling oil pipe of water-cooled oil cooler, can also guarantee simultaneously that the heat dissipation capacity reduces when fluid is at low temperature, increase the heat dissipation capacity when high temperature, select different cooling methods according to the temperature of fluid promptly, the cooling effect is good.

In order to achieve the above object, one aspect of the present invention provides a transmission cooling system, which includes a transmission, a water-cooled oil cooler, an air-cooled oil cooler, a cooling water source, a cooling oil pipe, a first valve, and a first cooling water pipe; the gearbox comprises a first inlet and a first outlet for oil to enter and exit, and the water-cooled oil cooler comprises a second inlet and a second outlet for cooling water to enter and exit; one end of the cooling oil pipe is in fluid communication with the first outlet, and the other end of the cooling oil pipe extends through the water-cooled oil cooler and the air-cooled oil cooler to be cooled and then is in fluid communication with the first inlet; the first cooling water pipe provides fluid communication between the second inlet and the cooling water source, and the second outlet is used for discharging cooling water provided by the cooling water source; the first valve is arranged on the first cooling water pipe to control the on-off of the first cooling water pipe.

Optionally, the water-cooled oil cooler is arranged at the upstream of the air-cooled oil cooler along the flowing direction of the oil.

Optionally, the first valve is a thermostat, and the thermostat is configured to control on/off of the first cooling water pipe according to the temperature of the oil in the cooling oil pipe.

Optionally, the cooling water source is an engine cooling system, and the engine cooling system includes a water jacket, a radiator, a second cooling water pipe and a third cooling water pipe; the water jacket includes a third inlet and a third outlet, and the radiator includes a fourth inlet and a fourth outlet; the second chilled water tube provides fluid communication between the third outlet and the fourth inlet, and the third chilled water tube provides fluid communication between the fourth outlet and the third inlet.

Optionally, the first cooling water pipe provides fluid communication between the third cooling water pipe and the second inlet.

Optionally, the gearbox cooling system comprises a first reversing valve, and the first cooling water pipe is in fluid communication with the third cooling water pipe through the first reversing valve.

Optionally, the gearbox cooling system comprises a fourth cooling water line providing fluid communication between the second outlet and the third cooling water line.

Optionally, the gearbox cooling system comprises a second reversing valve, and the fourth cooling water pipe is in fluid communication with the third cooling water pipe through the second reversing valve.

Optionally, the heat sink includes an air opening for providing cooling air, and the air-cooled oil cooler is disposed at the air opening to receive the cooling air.

A second aspect of the present invention provides a vehicle, comprising a gearbox cooling system as defined above.

Through above-mentioned technical scheme, when the temperature of the fluid that flows into cooling oil pipe from first export is lower, first valve control first condenser tube disconnection, cooling oil pipe's fluid is though through water-cooling oil cooler, but water-cooling oil cooler does not work, therefore fluid only cools down through air-cooled oil cooler, can reach suitable temperature. And when the temperature of the fluid that flows into cooling oil pipe from first export is higher, only cool down through air-cooled oil cooler and cool down probably can't reach suitable temperature, at this moment first valve control first condenser tube switches on, and the cooling water source's cooling water flows into in the water-cooled oil cooler, just can take place the heat exchange with the water-cooled oil cooler when cooling oil pipe's fluid passes through the water-cooled oil cooler to reach the refrigerated purpose of cooling down, later fluid carries out the secondary cooling through the air-cooled oil cooler once more, thereby can make the fluid of higher temperature cool down to suitable temperature. The utility model discloses in, because fluid flows along cooling oil pipe always after flowing into cooling oil pipe from first export, consequently no matter whether water-cooling oil cooler works, fluid can not stop in cooling oil pipe yet to fluid jam cooling oil pipe's problem has just also been avoided.

Drawings

FIG. 1 is a schematic diagram of an embodiment of a transmission cooling system of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

As shown in fig. 1, the transmission cooling system of the present invention includes a transmission 10, a water-cooled oil cooler 20, an air-cooled oil cooler 30, a cooling water source, a cooling oil pipe 40, a first valve 50, and a first cooling water pipe 61; the gearbox 10 comprises a first inlet 11 and a first outlet 12 for oil to enter and exit, and the water-cooled oil cooler 20 comprises a second inlet 21 and a second outlet 22 for cooling water to enter and exit; one end of the cooling oil pipe 40 is in fluid communication with the first outlet 12, and the other end of the cooling oil pipe extends through the water-cooled oil cooler 20 and the air-cooled oil cooler 30 to be cooled and then is in fluid communication with the first inlet 11; the first cooling water pipe 61 provides fluid communication between the second inlet 21 and the cooling water source, and the second outlet 22 is used for discharging the cooling water provided by the cooling water source; the first valve 50 is disposed in the first cooling water pipe 61 to control the on/off of the first cooling water pipe 61.

When the temperature of the oil flowing into the cooling oil pipe 40 from the first outlet 12 is low, the first valve 50 controls the first cooling water pipe 61 to be disconnected, and although the oil of the cooling oil pipe 40 passes through the water-cooled oil cooler 20, the water-cooled oil cooler 20 does not work, so that the oil is cooled by the air-cooled oil cooler 30 only to reach a suitable temperature. And when the temperature of the oil flowing into the cooling oil pipe 40 from the first outlet 12 is high, the oil can not reach a proper temperature only by cooling through the air-cooled oil cooler 30, at this time, the first valve 50 controls the conduction of the first cooling water pipe 61, the cooling water at the cooling water source flows into the water-cooled oil cooler 20, the oil of the cooling oil pipe 40 can exchange heat with the water-cooled oil cooler 20 when passing through the water-cooled oil cooler 20, so that the purpose of cooling is achieved, and then the oil is cooled again through the air-cooled oil cooler 30 for the second time, so that the oil at a high temperature can be cooled to a proper temperature.

It should be noted that the present invention relates to a transmission with a lower temperature and a higher temperature, which is not specific temperature values, but is rather suitable for the transmission with a temperature range of 95-105 deg.c, for example, in some working conditions, the lower temperature oil is 110-115 deg.c, and the higher temperature oil is 115 deg.c.

Additionally, the utility model discloses compare in traditional gearbox cooling system, just because fluid just flows along cooling oil pipe 40 always after flowing into cooling oil pipe 40 from first export 12, consequently no matter whether water-cooling oil cooler 20 works, fluid can not stop in cooling oil pipe 40 yet to fluid has just also been avoided blockking up cooling oil pipe 40's problem.

Because the oil is in the state of continuous flow along cooling oil pipe 40, the opening and closing of water-cooled oil cooler 20 and air-cooled oil cooler 30 can not influence the flow of oil, therefore, water-cooled oil cooler 20 and air-cooled oil cooler 30 can set up in arbitrary order, and optional, water-cooled oil cooler 20 sets up the upper reaches at air-cooled oil cooler 30 along the flow direction of oil.

It should be understood that the first valve 50 can be manually controlled to open and close the first cooling water pipe 61, for example, when an operator observes that the oil in the transmission is at a high temperature through a thermometer, the first valve 50 can be manually opened, so as to conduct the first cooling water pipe 61. In order to judge whether to open first valve 50 according to fluid temperature automatically and in time the utility model discloses an in the preferred embodiment, first valve 50 is the thermostat, and the thermostat configuration is the break-make that can be according to the temperature control first condenser tube 61 of the fluid in the cooling oil pipe 40. The structure and model of the thermostat are not limited in the utility model.

The form of the cooling water source can be selected in various ways, and in some embodiments of the present invention, considering that the temperature of the cooling water in the engine water jacket is generally lower than the temperature of the oil of the transmission during the running process of the vehicle, therefore, in order to save cost and improve the utilization efficiency of the existing resources, the cooling water source is an engine cooling system, which optionally includes a water jacket 70, a radiator 80, a second cooling water pipe 62 and a third cooling water pipe 63; the water jacket 70 includes a third inlet 71 and a third outlet 72, and the radiator 80 includes a fourth inlet 81 and a fourth outlet 82; the second cooling water pipe 62 provides fluid communication between the third outlet 72 and the fourth inlet 81, and the third cooling water pipe 63 provides fluid communication between the fourth outlet 82 and the third inlet 71. That is, the water-cooled oil cooler 20 can directly use the coolant in the engine water jacket to cool the oil of the transmission.

The first cooling water pipe 61 may be directly connected to the water jacket 70 to introduce the cooling fluid into the water-cooled oil cooler 20, and in order to further enhance the cooling effect of the cooling water on the oil, the first cooling water pipe 61 may optionally provide fluid communication between the third cooling water pipe 63 and the second inlet 21. Because the water jacket 70 covers the surface of the engine, in the working process of the engine, the cooling water in the water jacket 70 absorbs the heat generated by the engine, and the cooling water with the increased temperature enters the water jacket 70 to exchange heat with the engine after being cooled by the radiator 80, so that the temperature of the cooling water in the water jacket 70 is generally higher than that of the cooling water (namely, the cooling water in the third cooling water pipe 63) which is just cooled by the radiator 80, and the first cooling water pipe 61 is directly communicated with the third cooling water pipe 63, so that the cooling water with the lower temperature can be introduced into the water-cooled oil cooler 20, and the cooling effect is further improved.

In order to increase the flow rate of the cooling water cooled by the radiator 80 flowing into the water-cooled oil cooler 20, the transmission cooling system further comprises a first reversing valve 91, and the first cooling water pipe 61 is in fluid communication with the third cooling water pipe 63 through the first reversing valve 91. That is, after the first valve 50 opens the first cooling water pipe 61, the first direction valve 91 is controlled to close the pipe between the third inlet 71 and the first direction valve 91, so that the cooling water flows into the first cooling water pipe 61 completely, thereby increasing the flow rate of the cooling water flowing into the water-cooled oil cooler 20.

To improve the availability of cooling water, the gearbox cooling system optionally comprises a fourth cooling water pipe 64, the fourth cooling water pipe 64 providing fluid communication between the second outlet 22 and the third cooling water pipe 63. Thus, when the first cooling water pipe 61 is conducted, a circulation circuit of the cooling water is formed among the water jacket 70, the radiator 80, and the water-cooled oil cooler 20.

When the cooling water flows from the water-cooled oil cooler 20 to the third cooling water pipe 63, in order to make the cooling water smoothly flow to the third inlet 71 of the water jacket 70, the gearbox cooling system optionally comprises a second reversing valve 92, and the fourth cooling water pipe 64 is in fluid communication with the third cooling water pipe 63 through the second reversing valve 92.

Generally, the air-cooled oil cooler 30 utilizes the cooling air formed by the air flow to provide cooling for the oil in the cooling oil pipe 40, and in some embodiments of the present invention, the heat sink 80 can discharge the cooling air with lower temperature, therefore, in order to further improve the utilization efficiency of energy, the heat sink 80 includes an air port for providing the cooling air, and the air-cooled oil cooler 30 is disposed at the air port to receive the cooling air.

The utility model also provides a vehicle, the vehicle includes foretell gearbox cooling system. The utility model discloses a vehicle can prevent that fluid from blockking up the cooling oil pipe of water-cooled oil cooler through adopting foretell gearbox cooling system, can also guarantee simultaneously to reduce the heat dissipation capacity when fluid is at low temperature, increases the heat dissipation capacity when high temperature, selects different cooling modes according to the temperature of fluid promptly, and the cooling effect is good.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide a solution of the present invention with a plurality of simple modifications to avoid unnecessary repetition, and the present invention is not described separately for various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. A gearbox cooling system is characterized by comprising a gearbox (10), a water-cooled oil cooler (20), an air-cooled oil cooler (30), a cooling water source, a cooling oil pipe (40), a first valve (50) and a first cooling water pipe (61);

the gearbox (10) comprises a first inlet (11) and a first outlet (12) for oil to enter and exit, and the water-cooled oil cooler (20) comprises a second inlet (21) and a second outlet (22) for cooling water to enter and exit;

one end of the cooling oil pipe (40) is in fluid communication with the first outlet (12), and the other end of the cooling oil pipe extends through the water-cooled oil cooler (20) and the air-cooled oil cooler (30) to be cooled and then is in fluid communication with the first inlet (11);

the first cooling water pipe (61) provides fluid communication between the second inlet (21) and the cooling water source, and the second outlet (22) is used for discharging cooling water provided by the cooling water source;

the first valve (50) is arranged on the first cooling water pipe (61) to control the on-off of the first cooling water pipe (61).

2. Gearbox cooling system according to claim 1, characterised in that the water-cooled oil cooler (20) is arranged upstream of the air-cooled oil cooler (30) in the direction of flow of the oil.

3. Gearbox cooling system according to claim 1, characterised in that the first valve (50) is a thermostat configured to control the switching of the first cooling water line (61) according to the temperature of the oil in the cooling oil line (40).

4. A gearbox cooling system according to claim 1, characterised in that the source of cooling water is an engine cooling system comprising a water jacket (70), a radiator (80), a second cooling water pipe (62) and a third cooling water pipe (63);

the water jacket (70) comprises a third inlet (71) and a third outlet (72), and the radiator (80) comprises a fourth inlet (81) and a fourth outlet (82);

the second cooling water pipe (62) provides fluid communication between the third outlet (72) and the fourth inlet (81), and the third cooling water pipe (63) provides fluid communication between the fourth outlet (82) and the third inlet (71).

5. Gearbox cooling system according to claim 4, characterised in that the first cooling water pipe (61) provides fluid communication between the third cooling water pipe (63) and the second inlet (21).

6. Gearbox cooling system according to claim 5, characterised in that it comprises a first direction valve (91), through which the first cooling water line (61) is in fluid communication with the third cooling water line (63).

7. Gearbox cooling system according to claim 6, characterised in that it comprises a fourth cooling water pipe (64), said fourth cooling water pipe (64) providing fluid communication between the second outlet (22) and the third cooling water pipe (63).

8. Gearbox cooling system according to claim 7, characterised in that it comprises a second direction valve (92), said fourth cooling water line (64) being in fluid communication with said third cooling water line (63) through said second direction valve (92).

9. Gearbox cooling system according to any of claims 4-8, characterised in that the radiator (80) comprises tuyeres for providing cooling air, at which tuyeres the air-cooled oil cooler (30) is arranged to receive the cooling air.

10. A vehicle, characterized in that it comprises a gearbox cooling system according to any one of claims 1-9.