A transfer case cooling system

Abstract

This utility model discloses a transfer case cooling system, including a transfer case and a liquid cooling box. The transfer case includes a transfer case body and a gear set disposed within the transfer case body. The transfer case has a first liquid inlet and a second liquid inlet communicating with the interior of the transfer case body. The liquid cooling box includes a liquid cooling box body and a heat dissipation mechanism and a circulating liquid supply component disposed within the liquid cooling box body. The liquid cooling box body has a liquid supply port and a liquid return port communicating with the interior of the liquid cooling box body. The first liquid inlet on the transfer case body is connected to the liquid supply port on the liquid cooling box body via a liquid supply pipe, and the second liquid inlet on the transfer case body is connected to the liquid return port on the liquid cooling box body via a liquid return pipe, forming a circulating flow loop. This utility model can circulate the cooling oil filled in the transfer case, promptly removing the heat generated by the gear set inside the transfer case body during rotation, ensuring the normal operation of the transfer case and improving the cooling effect.

Description

Technical Field

[0001] This utility model relates to the technical field of transfer case cooling, and in particular to a transfer case cooling system. Background Technology

[0002] As the core power distribution component of the four-wheel drive vehicle's transmission system, the transfer case's core function is to receive the power output from the engine and selectively distribute the power according to the vehicle's driving conditions (such as normal highway driving, off-road driving, etc.). It can either transmit all the power to the rear axle to achieve two-wheel drive mode, or distribute the power to both the front and rear axles to switch to four-wheel drive mode. It is a key device to ensure the reliability of vehicle power transmission and driving adaptability.

[0003] During the actual operation of the transfer case, the gear sets, bearings and other transmission components inside generate a lot of frictional heat during high-speed meshing and rotation. If this heat cannot be dissipated in time, the temperature of the lubricating oil inside the transfer case will continue to rise, which will lead to a decrease in the viscosity of the lubricating oil and a decline in lubrication performance. Ultimately, this will cause the transmission components to wear more quickly and have a shorter service life. In severe cases, it may even cause component jamming, power transmission interruption and other malfunctions, which will directly affect the driving safety and reliability of the vehicle.

[0004] Currently, the common heat dissipation solution used in traditional transfer cases is a structure in which the heat-conducting components are directly connected to the fan. This means that the metal heat-conducting components (such as aluminum heat sinks or heat-conducting blocks) are directly attached to the outer wall of the transfer case housing to absorb the heat conducted by the housing. At the same time, the cooling fan is directly fixed to the heat-conducting components by bolts or clips, and the airflow generated by the fan is used to force-cool the heat-conducting components. However, this heat dissipation solution has significant drawbacks: on the one hand, the direct connection between the fan and the heat-conducting components can cause local areas of the heat-conducting components to be blocked by the fan, making it difficult for the airflow to evenly cover the entire heat dissipation surface of the heat-conducting components, thus creating heat dissipation blind spots. On the other hand, heat is prone to local accumulation at the connection point during the transfer of heat from the heat-conducting components to the fan, and cannot be quickly carried away by the airflow, resulting in low overall heat dissipation efficiency and affecting the cooling effect. Utility Model Content

[0005] The purpose of this invention is to provide a transfer case cooling system that can circulate the cooling oil filled in the transfer case, promptly removing the heat generated by the gear set inside the transfer case during rotation, thereby ensuring the normal operation of the transfer case and improving the heat dissipation effect.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A transfer case cooling system includes a transfer case and a liquid cooler. The transfer case includes a transfer case body and a gear set disposed within the transfer case body. The transfer case has a first liquid inlet and a second liquid inlet communicating with the interior of the transfer case body. The liquid cooler includes a liquid cooler body and a heat dissipation mechanism and a circulating liquid supply component disposed within the liquid cooler body. The liquid cooler body has a liquid supply port and a liquid return port communicating with the interior of the liquid cooler body. The first liquid inlet on the transfer case body is connected to the liquid supply port on the liquid cooler body via a liquid supply pipe, and the second liquid inlet on the transfer case body is connected to the liquid return port on the liquid cooler body via a liquid return pipe, forming a circulating flow loop.

[0008] Based on the above technical solution, the present invention can be improved as follows:

[0009] Furthermore, a gear chamber for accommodating the gear set is formed inside the main body of the transfer case, and the first liquid inlet and the second liquid inlet are connected to the gear chamber.

[0010] Furthermore, the liquid cooling box body has an internal accommodating chamber, and a rear cover is detachably installed at the box opening. The rear cover is provided with a liquid supply port and a liquid return port. The liquid cooling box body has an air outlet on the front panel and air inlets on the two side panels. This allows ambient air to enter the liquid cooling box body through the air inlets, flow through the accommodating chamber, exchange heat through the heat dissipation mechanism, and then be discharged from the liquid cooling box body through the air outlets.

[0011] Furthermore, the heat dissipation mechanism includes a fan, heat dissipation pipes, and multiple spaced heat dissipation fins; a heat dissipation channel is formed between two adjacent heat dissipation fins; the heat dissipation pipes are meandering between the multiple heat dissipation fins, the liquid outlet end of the heat dissipation pipes is connected to the liquid supply pipe, and the liquid inlet end of the heat dissipation pipes is connected to the liquid return pipe; the fan is fixedly installed in the accommodating chamber inside the liquid cooling box body, and the heat dissipation fins are on the side away from the air outlet.

[0012] Furthermore, the circulating liquid supply component is an oil pump, with its input end connected to the liquid outlet end of the heat sink pipe and its output end connected to the liquid supply pipeline.

[0013] Furthermore, the input end of the oil pump and the outlet end of the heat dissipation pipe are connected to each other through a T-joint, and a temperature sensor is installed on the T-joint. The temperature sensor is connected to an electronic thermometer via a wired connection.

[0014] Furthermore, the liquid cooling box body is detachably equipped with a mesh screen at the exhaust port.

[0015] Furthermore, the liquid cooling box body is also equipped with an openable and closable air guide device, which is located at the air inlet of the liquid cooling box body.

[0016] Furthermore, the air guiding device includes a fixed frame, a rotatable guide plate mounted on the fixed frame, and a driving component for driving the guide plate to rotate; multiple guide plates are provided, which are mounted on the fixed frame and arranged at equal intervals along the width direction of the fixed frame, and a flow channel for flowing gas is formed between two adjacent guide plates.

[0017] Furthermore, the guide plate has connecting shafts at both ends in the length direction, and the guide plate is rotatably connected to the fixed frame through the connecting shafts. The fixed frame has shaft holes that can be correspondingly engaged with the connecting shafts. The driving component includes a driven gear set on one of the connecting shafts of the guide plate, a driving gear set in the side panel of the liquid cooling box body and located above the driven gear, and a rack that can mesh with the driven gear and the driving gear respectively. The driving gear is connected to a motor. The rack has meshing teeth on both the top and bottom surfaces. The meshing teeth on the top surface of the rack mesh with the driven gear, and the meshing teeth on the bottom surface of the rack mesh with the driving gear. The fixed frame has a guide groove on one side, and a guide block is set on the rack. The guide block and the guide groove slide against each other to guide the rack to move linearly.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] This utility model incorporates a transfer case and a liquid cooling box. The liquid cooling box includes a liquid cooling box body, a heat dissipation mechanism, and a circulating liquid supply component. A first liquid inlet on the transfer case body is connected to a liquid supply port on the liquid cooling box body via a liquid supply pipe, and a second liquid inlet on the transfer case body is connected to a liquid return port on the liquid cooling box body via a liquid return pipe, forming a circulating flow loop. This facilitates the circulation of the cooling oil filled in the transfer case, promptly removing the heat generated by the gear set inside the transfer case body during rotation, ensuring the normal operation of the transfer case, and improving the heat dissipation effect. Attached Figure Description

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a schematic diagram of the transfer case cooling system in the embodiment;

[0022] Figure 2 This is a schematic diagram of the air guide device in the embodiment.

[0023] The markings on the attached diagram are as follows: 1-Transfer box body, 2-Liquid supply pipe, 3-Liquid return pipe, 4-Liquid cooling box body, 5-Liquid supply port, 6-Liquid return port, 7-Motor, 8-Rack and pinion, 9-Outlet, 10-Inlet, 11-Fan, 12-Heat pipe, 13-Heat fin, 14-Oil pump, 15-T-connector, 16-Temperature sensor, 17-Electronic thermometer, 18-Box mesh, 19-Fixed frame, 20-Guide plate, 21-Driven gear, 22-Driven gear. Detailed Implementation

[0024] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. These descriptions are intended to aid in understanding the utility model but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] See Figure 1 and Figure 2 This embodiment relates to a transfer case cooling system, including a transfer case and a liquid cooler. The transfer case includes a transfer case body 1 and a gear set disposed within the transfer case body 1. The transfer case has a first liquid inlet and a second liquid inlet communicating with the interior of the transfer case body 1. The liquid cooler includes a liquid cooler body 4 and a heat dissipation mechanism and a circulating liquid supply component disposed within the liquid cooler body 4. The liquid cooler body 4 has a liquid supply port 5 and a liquid return port 6 communicating with the interior of the liquid cooler body 4. The first liquid inlet on the transfer case body 1 is connected to the liquid supply port 5 on the liquid cooler body 4 via a liquid supply pipe 2, and the second liquid inlet on the transfer case body 1 is connected to the liquid return port 6 on the liquid cooler body 4 via a liquid return pipe 3, forming a circulating flow loop to facilitate the circulation of the cooling oil filled in the transfer case, promptly removing the heat generated by the gear set inside the transfer case body 1 during rotation, and ensuring the normal operation of the transfer case.

[0026] Specifically, in this embodiment, the transfer case body 1 is a triangular box structure with a gear chamber inside that houses the gear set. The first and second liquid inlets are connected to the gear chamber, which is filled with cooling oil. The gear set is immersed in the cooling oil. The cooling oil enters the transfer case body 1 through the first liquid inlet, flows through the gear set to absorb heat, and then flows out of the transfer case body 1 through the second liquid inlet. It then flows back to the liquid cooling box through the return pipe 3 for heat exchange and cooling, and is then supplied to the transfer case body 1 again through the supply pipe 2. Through continuous circulation of the cooling oil, the heat generated by the gear set rotating inside the transfer case body 1 can be carried away in time.

[0027] In this embodiment, the liquid cooling box body 4 is a rectangular box structure. The liquid cooling box body 4 has a top box plate, a bottom box plate, a front box plate, and two side box plates. The liquid cooling box body 4 forms a accommodating chamber inside. The liquid cooling box body 4 forms a box opening on the rear side that connects to the accommodating chamber and is opposite to the front box plate. A rear box cover is detachably installed at the box opening. The rear box cover is provided with a liquid supply port 5 and a liquid return port 6. The heat dissipation mechanism and the circulating liquid supply component are installed in the accommodating chamber inside the liquid cooling box body 4 through the box opening. The liquid cooling box body 4 has an air outlet 9 on the front box plate and an air inlet 10 on the two side box plates. The air from the outside environment enters the liquid cooling box body 4 through the air inlet 10, flows in the accommodating chamber, exchanges heat through the heat dissipation mechanism, and is discharged from the liquid cooling box body 4 through the air outlet 9.

[0028] The heat dissipation mechanism includes a fan 11, a heat dissipation pipe 12, and multiple spaced heat dissipation fins 13; a heat dissipation channel is formed between two adjacent heat dissipation fins 13; the heat dissipation pipe 12 is a copper pipe, which meanders through the multiple heat dissipation fins 13, the liquid outlet end of the heat dissipation pipe 12 is connected to the liquid supply pipe 2, and the liquid inlet end of the heat dissipation pipe 12 is connected to the liquid return pipe 3. Cooling oil flows back from the liquid inlet end of the heat dissipation pipe 12 into the heat dissipation pipe 12, and after the cooling oil absorbed by the heat dissipation pipe 12 is conducted to the heat dissipation fins 13, it flows out from the liquid outlet end of the heat dissipation pipe 12; the fan 11 is fixedly installed in the internal accommodating chamber of the liquid cooling box body 4, and the heat dissipation fins 13 are on the side away from the air outlet 9; when the fan 11 is started, it draws in air through the air inlet 10 on the liquid cooling box body 4, and makes the air flow through the heat dissipation channel at an accelerated speed, and after exchanging heat with the heat dissipation fins 13, it is discharged through the air outlet 9 on the liquid cooling box body 4.

[0029] The circulating liquid supply component is the oil pump 14 in the prior art. The input end of the oil pump 14 is connected to the liquid outlet end of the heat exchange pipe 12, and the output end of the oil pump 14 is connected to the liquid supply pipe 2. Since the viscosity of the cooling oil increases after heat exchange through the heat exchange pipe 12, the oil pump 14 can accelerate the flow of the cooling oil into the interior of the transfer case body 1.

[0030] The input end of the oil pump 14 and the outlet end of the cooling pipe 12 are connected to each other by a three-way connector 15. A temperature sensor 16 is installed on the three-way connector 15. The temperature sensor 16 is connected to an electronic thermometer 17 by wire. The electronic thermometer 17 is installed in the driver's cab of the car for the driver to observe.

[0031] The liquid cooling box body 4 is detachably equipped with a mesh 18 at the exhaust port. The mesh 18 is used to deflect large blocks splashed during driving to avoid damage to the heat dissipation mechanism.

[0032] The liquid cooling box body 4 is also equipped with an openable air guide device. The air guide device is located at the air inlet 10 of the liquid cooling box body 4. By adjusting the opening of the air guide device, the air intake can be adjusted to meet different heat dissipation requirements.

[0033] The air guiding device includes a fixed frame 19, a rotatable guide plate 20 mounted on the fixed frame 19, and a driving component for driving the guide plate 20 to rotate. Multiple guide plates 20 are provided, which are mounted on the fixed frame 19 and arranged at equal intervals along the width direction of the fixed frame 19. A flow channel for flowing gas is formed between two adjacent guide plates 20.

[0034] Under the driving action of the driving component, the guide plate 20 can rotate relative to the fixed clamp to change the inclination of the guide plate 20, and the opening and closing degree of the guide channel changes accordingly, thereby changing the amount of outside air entering; the guide plate 20 is a long rectangular plate structure, and the length direction of the guide plate 20 is parallel to the length direction of the fixed frame 19. The guide plate 20 is provided with connecting shafts at both ends in the length direction, and the guide plate 20 is rotatably connected to the fixed frame 19 through the connecting shafts. The fixed frame 19 is provided with shaft holes that can be correspondingly matched with the connecting shafts.

[0035] The driving components include a driven gear 21 mounted on one of the connecting shafts of the guide plate 20, a driving gear 22 mounted inside the side panel of the liquid cooling tank body 4 and located above the driven gear 21, and a rack 8 that can mesh with the driven gear 21 and the driving gear 22 respectively; the driving gear 22 is connected to a motor 7; the rack 8 has meshing teeth on both its top and bottom surfaces, the top meshing teeth of the rack 8 mesh with the driven gear 21, and the bottom meshing teeth of the rack 8 mesh with the driving gear 22; during adjustment, the motor 7 starts, drives the driving gear 22 to rotate, and drives the driven gear 21 to rotate through the rack 8, so that the multiple guide plates 20 rotate synchronously and change their inclination.

[0036] The fixed frame 19 has a guide groove on one side, and the rack 8 has a guide block (not shown in the figure). The guide block and the guide groove slide against each other to guide the rack 8 to move linearly.

[0037] The above embodiments of this utility model are not intended to limit the scope of protection of this utility model. The implementation of this utility model is not limited thereto. All other modifications, substitutions or alterations made to the above structure of this utility model based on the above content of this utility model and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of ​​this utility model, shall fall within the scope of protection of this utility model.

Claims

1. A transfer case cooling system comprising a transfer case and a liquid cooling tank; characterized in that, The transfer case includes a transfer case body and a gear set disposed within the transfer case body. The transfer case has a first liquid inlet and a second liquid inlet communicating with the interior of the transfer case body. The liquid cooler includes a liquid cooler body and a heat dissipation mechanism and a circulating liquid supply component disposed within the liquid cooler body. The liquid cooler body has a liquid supply port and a liquid return port communicating with the interior of the liquid cooler body. The first liquid inlet on the transfer case body is connected to the liquid supply port on the liquid cooler body via a liquid supply pipe, and the second liquid inlet on the transfer case body is connected to the liquid return port on the liquid cooler body via a liquid return pipe, forming a circulating flow loop.

2. The transfer case cooling system of claim 1, wherein, The main body of the transfer case forms a gear chamber for accommodating the gear set, and the first liquid inlet and the second liquid inlet are connected to the gear chamber.

3. The transfer case cooling system of claim 2, wherein, The liquid cooling box body forms an internal accommodating chamber. A rear cover is detachably installed at the box opening of the liquid cooling box body, and the rear cover is provided with a liquid supply port and a liquid return port. An air outlet is opened on the front panel of the liquid cooling box body, and air inlets are opened on the two side panels of the liquid cooling box body. This allows ambient air to enter the liquid cooling box body through the air inlets, flow in the accommodating chamber, exchange heat through the heat dissipation mechanism, and then be discharged from the liquid cooling box body through the air outlet.

4. The transfer case cooling system of claim 3, wherein, The heat dissipation mechanism includes a fan, heat dissipation pipes, and multiple spaced heat dissipation fins; a heat dissipation channel is formed between two adjacent heat dissipation fins; the heat dissipation pipes are meandering between the multiple heat dissipation fins, the liquid outlet end of the heat dissipation pipes is connected to the liquid supply pipe, and the liquid inlet end of the heat dissipation pipes is connected to the liquid return pipe; the fan is fixedly installed in the accommodating chamber inside the liquid cooling box body, and the heat dissipation fins are on the side away from the air outlet.

5. The transfer case cooling system of claim 4, wherein, The circulating liquid supply component is an oil pump. The input end of the oil pump is connected to the liquid outlet end of the heat sink, and the output end of the oil pump is connected to the liquid supply pipeline.

6. The transfer case cooling system of claim 5, wherein, The input end of the oil pump and the outlet end of the heat sink are connected to each other via a T-joint, and a temperature sensor is installed on the T-joint. The temperature sensor is connected to an electronic thermometer via a wired connection.

7. The transfer case cooling system of claim 6, wherein, The liquid cooling box body has a detachable mesh installed at the exhaust port.

8. The transfer case cooling system of claim 7, wherein, The liquid cooling box body is also equipped with an openable air guide device, which is located at the air inlet of the liquid cooling box body.

9. The transfer case cooling system of claim 8, wherein, The air guiding device includes a fixed frame, a rotatable guide plate mounted on the fixed frame, and a driving component for driving the guide plate to rotate. Multiple guide plates are provided, which are mounted on the fixed frame and arranged at equal intervals along the width direction of the fixed frame, forming a flow channel for flowing gas between two adjacent guide plates.

10. The transfer case cooling system of claim 9, wherein, The guide plate has connecting shafts at both ends along its length, and the guide plate is rotatably connected to the fixed frame via the connecting shafts. The fixed frame has shaft holes that can be correspondingly engaged with the connecting shafts. The driving component includes a driven gear mounted on one of the connecting shafts of the guide plate, a driving gear mounted inside the side panel of the liquid cooling tank body and located above the driven gear, and a rack that can mesh with the driven gear and the driving gear respectively. The driving gear is connected to a motor. The rack has meshing teeth on both its top and bottom surfaces. The meshing teeth on the top surface of the rack mesh with the driven gear, and the meshing teeth on the bottom surface of the rack mesh with the driving gear. The fixed frame has a guide groove on one side, and a guide block is mounted on the rack. The guide block and the guide groove slide against each other to guide the rack to move linearly.

Images