KR20130063905A - Apparatus for cooling auto transmission oil in vehicle - Google Patents

Abstract

PURPOSE: Oil cooling apparatus of an automatic transmission for vehicles is provided to form an oil pipe into a spiral shape, thereby improving oil cooling performance. CONSTITUTION: A condensate tank(100) includes a condensate inlet(110) and a condensate outlet(120). The condensate tank receives and stores the condensate which an air conditioning device(300) discharges. The condensate tank discharges the stored condensate. An oil pipe(200) is formed into a spiral shape. Both ends of the oil pipe are connected to a transmission(400).

Description

Oil Cooling System for Automotive Transmission {APPARATUS FOR COOLING AUTO TRANSMISSION OIL IN VEHICLE}

The present invention improves the cooling performance of the transmission oil by increasing the flow rate and the cooling section of the oil flowing through the oil pipe, and guides the condensate to the lower portion of the condensate tank so that the low temperature condensate is evenly distributed in the condensate tank It relates to an oil chiller.

With the development of convenience facilities provided in vehicles, and drivers are increasingly pursuing a comfortable driving method, the demand for auto transmission vehicles is increasing rapidly than manual transmission vehicles.

Since the automatic transmission continuously rotates the transmission gear, slip occurs inside the transmission, and when slip occurs, heat is generated to cause an increase in the oil temperature of the transmission.

As such, when the oil temperature of the transmission rises, various problems such as the durability of the mission may be weakened, the cooling performance of the engine may be degraded, and the transmission may be poor, and the oil may be cooled using a water-cooled / air-cooled cooling device. The temperature is lowering.

Typically, a water-cooled chiller is applied to the inside of the radiator tank to lower the oil temperature through the coolant, and the air-cooled chiller is separately mounted in the engine room to lower the temperature by running wind or air.

In particular, in a hot area or a vehicle that requires a trailer, the oil temperature of the transmission rises sharply, and because of the high outside temperature, a water cooling chiller and an air-cooled chiller are applied together to lower the oil temperature.

1 and 2 is a view showing the oil cooling apparatus of the automatic transmission according to the prior art, the condensate inlet portion 41 is provided with a condensate inlet portion 41 is the air condensate condensate inflow on one side and the condensate discharge portion 42 is discharged to the vaporized condensate on the other side ) Is provided with a condensate flow passage casing 40 and an oil inlet 51 for introducing the automatic transmission 10 oil on one side and an oil outlet 52 for discharging the automatic transmission 10 oil on the other side. A heat exchanger 30 having an oil flow path casing 50 installed inside the condensate flow path casing 40, and an automatic transmission 10 that is heat-exchanged in the heat exchanger 30 and discharged to the oil discharge part 52. ) And a water-cooled oil cooler 35 for cooling the oil with engine coolant cooled by the engine cooler.

However, in the above-described conventional technique, a plurality of baffles 61 and 62 are installed inside the oil flow path casing 40, and condensed water flows downward through the condensed water passing holes 71a and 72a formed in the baffle, thereby condensed water. The flow of water is not smooth.

Therefore, when the condensed water discharged from the air conditioner 5 is blocked or the condensed water is filled, the condensed water inlet and the condensed water discharged part are formed at a similar height position at the upper part. There is a possibility that it is immediately discharged to the condensate discharge portion, and this causes a problem that the low-temperature condensate is not evenly distributed in the condensate flow passage casing, the heat dissipation performance is reduced.

The present invention has been made to solve the conventional problems as described above, to provide an oil cooling device for an automatic transmission for a vehicle to improve the cooling performance of the transmission oil by increasing the flow rate and the cooling section of the oil flowing through the oil pipe. have.

The present invention provides an oil cooling apparatus of an automatic transmission for a vehicle in which condensate introduced from an air conditioning apparatus is guided to a lower portion of a condensate tank so that low temperature condensate is evenly distributed in the condensate tank.

The constitution of the present invention for achieving the above object, the condensate inlet is provided in the upper portion of the condensate discharged from the air conditioning apparatus is introduced and received inside, the condensate discharge port is provided with a condensate outlet is provided on the side discharge; And an oil pipe having both ends connected to the automatic transmission and installed to penetrate the condensate tank so that a portion located inside the condensate tank is bent in a spiral shape.

The condensate inlet may be formed to extend downward, so that the lower end portion of the condensate inlet may be located close to the bottom surface of the condensate tank.

The lower end of the condensate inlet may be formed to extend to at least be provided at a position lower than the position where the oil pipe is installed.

The spiral shape of the oil pipe is formed to have a constant pitch, it is possible to adjust the cooling performance of the oil by adjusting the pitch interval.

The oil pipe may be provided close to the bottom surface of the cooling water tank.

A water-cooled cooler or an air-cooled cooler connected to the automatic transmission at the end side of the oil pipe to cool the oil may be further installed.

The present invention through the above-mentioned means for solving the problem, the oil pipe made of a hollow tube is formed in a spiral shape, the flow rate of the oil flowing along the oil pipe increases, the time and length of the oil is cooled, the transmission oil Has the effect of improving the heat dissipation and cooling performance.

In addition, condensate flowing from the air conditioning unit flows in from the lower position of the condensate tank, so that newly introduced low temperature condensate is evenly distributed in the condensate tank, further improving heat exchange efficiency between oil and condensate, and further improving oil cooling efficiency. There is an advantage.

1 is a view schematically showing a configuration of an oil cooling apparatus for an automatic transmission according to the prior art.
2 is a schematic cross-sectional view of the heat exchanger shown in FIG. 1.
3 is a view showing the overall configuration of the oil cooling apparatus for an automatic transmission according to the present invention.
4 is a view showing a coupling relationship between the condensate tank and the oil pipe according to the present invention.
5 and 6 are views of the pitch of the spiral oil pipe according to the present invention is adjusted pitch.
Figure 7 is a view of a form further installed a water-cooled cooler in the oil cooling apparatus for automatic transmission according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The oil cooling apparatus of the automatic transmission for a vehicle of the present invention shown through FIGS. 3 to 7 has a structure in which a spiral oil pipe 200 is installed in the condensate tank 100 through which the condensate is introduced, and has a condensate inlet at an upper portion thereof. Condensed water discharged from the air conditioner 110 is provided and received therein, the condensate outlet 120 is provided on one side of the upper condensate tank 100 is discharged to the outside condensate contained in the inside, and both ends of the transmission ( 400 is connected to the oil passes through, is installed to penetrate the condensate tank 100, the portion located inside the condensate tank 100 is configured to include an oil pipe 200 bent in a spiral shape.

That is, the oil of the transmission passes through the inside of the condensate tank 100 in which the condensed water is collected through the oil pipe 200, and in particular, the oil pipe 200 is formed in a spiral shape, so that the cooling section and the cooling time of the oil are long. It is possible to improve the heat dissipation performance and cooling performance of the transmission oil.

The condensate inlet 110 of the present invention as shown in Figure 4 is formed to extend to the bottom, the lower end of the condensate inlet 110 is provided to be located close to the bottom surface of the condensate tank 100, condensate inlet 110 By condensate flowing through the inflow from the lower position inside the condensate tank 100, the newly introduced low-temperature condensate is evenly flows and distributed in the condensate tank 100 to improve the cooling performance of the oil.

The lower end of the condensate inlet 110 is a structure that can be formed to extend at least at a position lower than the oil pipe 200 is installed through the bar, the low-temperature condensate water flowing from the lower end of the inlet to the oil pipe 200 By flowing in from the lower position of, the heat exchange between the low temperature condensate and the oil is more surely performed, thereby increasing the heat exchange efficiency.

Here, the condensed water is discharged from the air conditioner 300 (HVAC) installed in the vehicle interior, the surface of the air conditioner 300 due to the temperature difference between the outside and the inside, or generated on the surface of the evaporator when the air conditioner is operating drain hose ( Waste water is discarded aboard. This condensate usually has a low temperature of 4-5 ° C.

5 and 6, the spiral shape of the oil pipe 200 of the present invention is formed to have a constant pitch (P), as a structure to adjust the cooling performance of the oil by adjusting the pitch (P) interval. When the spacing of the spiral pitch P is formed to be wide, the resistance of the flow path is low, and the section and time of the oil flowing in the condensate tank 100 are shortened, so that the heat dissipation and cooling performance is lowered. When formed narrow, the flow resistance is large, so that the section and the time that the oil flows in the condensate tank 100 becomes long, thereby increasing heat dissipation and cooling performance.

That is, it is possible to induce and exert an oil cooling performance suitable for the transmission 400 by adjusting the pitch P of the spiral shape to be bent.

At this time, the oil pipe 200 is appropriate to be bent into a hollow tube, which increases the flow rate of the oil flowing through the oil pipe 200, it is possible to effectively cool a large flow rate of oil with low temperature condensate. .

As shown in FIG. 4, the oil pipe 200 has a structure provided close to the bottom surface of the cooling water tank. That is, the condensate is introduced from the lower position of the condensate tank 100, the heat exchange efficiency with the oil pipe 200 located in the lower portion of the condensate tank 100 is increased, thereby improving the oil cooling performance.

In addition, condensate newly introduced into the condensate tank 100 is introduced from the lower position of the condensate tank 100, the heat exchanged condensate water is slightly increased bar flows to the upper portion of the condensate tank 100, the condensate tank 100 On the lower side of the c), heat exchange between the oil and the condensate can be made more effectively.

Meanwhile, as shown in FIG. 7, a water-cooled cooler 500 or an air-cooled cooler (not shown) connected to the transmission 400 at the end side of the oil pipe 200 to cool the oil may be further installed, and the condensate tank 100 may be installed. Before or after passing through the oil of the transmission may be passed through the water-cooled cooler 500 or the air-cooled cooler to be introduced into the transmission.

Here, in the case of the water-cooled cooler 500, the coolant used for engine cooling may be used, and the oil pipe 200 passes through the coolant to cool the oil, and in the case of the air-cooled cooler, the engine room is cooled by running wind or air. It can be installed separately.

3 will be described in detail the operation and effect of the present invention.

According to the present invention, when the condensed water is discharged through the drain hose 310 through the air conditioner 300, in particular, the air conditioner is driven, the condensed water is introduced into the condensed water tank 100 through the condensed water inlet 110. At this time, the condensate inlet 110 is formed to extend to the lower side of the condensate tank 100, the newly introduced low-temperature cooling water is introduced into the lower side inside the condensate tank 100.

In addition, the oil of the transmission in which the temperature is raised flows inside the oil pipe 200. The oil pipe 200 is provided through the condensate tank 100, whereby the oil passes through the condensate tank 100 and the oil. Heat exchange of the condensate takes place, allowing the transmission oil to cool.

Here, the oil cooling device of the present invention, as well as the oil pipe 200 is formed in a spiral shape, the oil pipe 200 is formed of a hollow tube, the flow rate of the oil flowing along the oil pipe 200 increases, The longer the time and length of the oil is cooled, the better the heat dissipation and cooling performance of the transmission oil can smoothly maintain the performance of the transmission 400.

In particular, the condensate introduced from the air conditioning apparatus 300 as described above is introduced from the lower position of the condensate tank 100, the newly introduced low temperature condensed water is evenly distributed in the condensate tank 100, thereby exchanging heat with oil The efficiency is further increased.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the specific embodiments set forth herein; rather, .

100: condensate tank 110: condensate inlet
120: condensate outlet 200: oil pipe
300: air conditioner 400: transmission
500: water-cooled cooler P: pitch

Claims (6)

A condensate tank 100 having a condensate inlet 110 provided at an upper portion thereof, and receiving and condensing water discharged from the air conditioning apparatus 300, and a condensate outlet 120 provided at a side thereof to discharge the received condensate; And
Both ends are connected to the transmission 400, the oil passes through, is installed so as to penetrate the condensate tank 100, the portion located inside the condensate tank 100 is bent in a spiral shape oil pipe 200; includes Cooling device for vehicle automatic transmission. The method according to claim 1,
The condensate inlet 110 is formed to extend downward, the lower end of the condensate inlet 110, the oil cooling device of the automatic transmission for a vehicle, characterized in that provided to be located close to the bottom surface of the condensate tank (100). The method according to claim 2,
The lower end of the condensate inlet 110 is an oil cooling device of an automatic transmission for a vehicle, characterized in that formed to extend at least at a position lower than the oil pipe 200 is installed through. The method according to claim 1,
The spiral shape of the oil pipe (200) is formed to have a constant pitch (P), the oil cooling apparatus of an automatic transmission for a vehicle, characterized in that to adjust the cooling performance of the oil by adjusting the pitch (P). The method according to claim 1,
The oil pipe 200 is an oil cooling apparatus of an automatic transmission for a vehicle, characterized in that provided close to the bottom surface of the cooling water tank. The method according to claim 1,
An oil cooling apparatus of an automatic transmission for a vehicle, characterized in that a water cooling cooler 500 or an air-cooling cooler connected to the transmission 400 to cool the oil is installed at the end side of the oil pipe 200.

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