KR20190142872A - Oil cooler - Google Patents

Abstract

The present invention relates to an oil cooler which comprises: a plurality of flow path plates forming an oil flow unit through which oil flows by lamination and a coolant flow unit through which a coolant flows; an upper plate and a lower plate coupled to the flow path plates; a mounting plate coupled to the upper plate; and a center pipe coupled to penetrate the upper plate, the plurality of flow path plates and the lower plate, and having an upper end unit inserted into and coupled to a settling groove concavely formed in the mounting plate. Therefore, the center pipe can be firmly coupled in a state perpendicular to the mounting plate, so that a poor connection between the center pipe and the mounting plate can be prevented when joining by brazing. In addition, it is possible to prevent oil from leaking in a portion where an oil flow path is connected.

Description

Oil cooler {Oil cooler}

The present invention relates to an oil cooler capable of cooling oil filled for lubrication and airtightness in an engine or transmission of an automobile.

In general, a vehicle is provided with a cooling system in the form of a heat exchanger such as a radiator or an oil cooler as well as an air conditioning system for indoor cooling.

The oil cooler is a heat exchanger for cooling the oil that is used for lubrication and air tightness in the engine or transmission of the vehicle.If the oil gets too hot, the oil viscosity becomes low and the lubrication and air tightness cannot be performed. In particular, if lubrication is not performed well, parts such as an engine and a transmission may be damaged.

Here, the temperature of the oil circulated in the oil cooler is relatively higher than the temperature of the coolant circulated in the radiator for cooling the engine, and thus heat exchange between the engine coolant of the radiator and the oil of the oil cooler so that the oil is cooled. The method is widely used.

In particular, a water-cooled oil cooler, in which a coolant is in direct contact with the oil cooler main body by providing an oil cooler in the radiator tank, is currently commonly used due to effects such as securing engine room space and improving heat dissipation performance. An automotive oil cooler is disclosed in which a plurality of plates are stacked in a 2010-10060638, in which a coolant flow portion in which coolant flows and an oil flow portion in which oil flows are alternately formed.

In the conventional oil cooler, as shown in FIG. 1, a plurality of plates may be stacked to alternately form a coolant flow part and an oil flow part, and although not shown, a center pipe may be coupled to penetrate the plates, and a locking part protrudes outward. The formed hollow tube type fastening means is inserted to pass through the center pipe and fastened to the engine block so that the oil cooler can be fixed and communicated with the engine. In addition, the oil filter may be coupled to the coupling means and the oil cooler in the form of a hollow tube.

At this time, one end of the center pipe of the oil cooler is coupled to the mounting plate disposed in the outermost direction in the stacking direction, where the mounting plate is formed in a flat shape, one end of the center pipe is in contact with the brazing and the like.

However, since the center pipe is coupled to the mounting plate of the flat plate structure, the brazing failure may occur due to the movement of the center pipe due to the play when the assembly is performed before the joining by brazing. In addition, due to the movement of the center pipe, the right angle of the center pipe with respect to the mounting plate occurs, so that the fastening means passes through the center pipe so that the oil cooler cannot be tightened with the correct torque when the oil cooler is fastened to the engine block. There is a problem that the loosening of the means may occur.

KR 10-2010-0060638 A (2010.06.07)

The present invention has been made to solve the problems described above, an object of the present invention is a plurality of plates are stacked to form a coolant flow portion and the oil flow portion in which the flow of the coolant flows alternately formed, the center pipe is In the oil cooler coupled through the plates, the center pipe is firmly coupled to the outermost mounting plate in the direction in which the plays are stacked to prevent the flow of the center pipe before brazing, the center relative to the mounting plate It is to provide an oil cooler that can improve the squareness of the pipe.

The oil cooler of the present invention for achieving the above object, the oil flow portion 301 through which the oil flows by lamination and the coolant flow portion 302 through which the coolant flows, through-holes penetrating the upper and lower A plurality of flow path plates 300 on which 300a is formed; The through hole 100a penetrating the upper and lower surfaces of the plate 110 is formed, and the recessed groove 150 is formed to be concave upward from the lower surface of the circumferential portion of the through hole 100a. A mounting plate 100 stacked on the upper side to form a flow path through which oil flows; And a center pipe 600 inserted into and coupled to the through holes 300a of the plurality of flow path plates 300, and having an upper end inserted into the settling groove 150. A center pipe 600 having an upper end inserted into the settling groove 150 and coupled thereto; It may be made, including.

In addition, the oil passages are formed on the lower side of the stacked flow path plates 300 to form oil flow paths. Through holes 500a penetrating the upper and lower surfaces are formed so that the lower end of the center pipe 600 is formed in the through holes 500a. The cover plate 500 may be inserted and coupled to each other.

In addition, the mounting plate 100 may include a plate 110 having a through hole 100a penetrating the upper and lower surfaces, a first vertical portion 111 extending upward from a circumference of the through hole 100a, and the It comprises a first horizontal portion 112 extending toward the inside of the through hole (100a) in the first vertical portion 111, by the first vertical portion 111 and the first horizontal portion 112 The upper end of the center pipe 600 may be inserted into and coupled to the formed settling groove 150.

In addition, an upper end portion of the center pipe 600 may be coupled to be in contact with the surfaces of the first vertical portion 111 and the first horizontal portion 112 of the mounting plate 100.

The mounting plate 100 may further include a second vertical portion 113 extending downward from the first horizontal portion 112 and spaced apart from the first vertical portion 111. An upper end of the center pipe 600 may be inserted into and coupled to the settling groove 150 formed by the first vertical portion 111, the first horizontal portion 112, and the second vertical portion 113.

In addition, the center pipe 600 has a stepped groove 610 concavely formed at the upper inner circumference thereof, and a protrusion 620 formed at an outer side of the stepped groove 610 in the radial direction is placed in the mounting plate 100. The groove 150 may be inserted into and coupled to the groove 150.

In addition, the inner surface of the second vertical portion 113 of the mounting plate 100 in the radial direction may be formed to be the same as the inner circumferential surface of the center pipe 600 or outward from the inner circumferential surface.

In addition, a fixing groove 150-1 is formed in the recess groove 150 of the mounting plate 100, and the center pipe 600 has a fixing protrusion 630 formed at an upper end thereof to protrude from the fixing protrusion. The 630 may be inserted into and coupled to the fixing groove 150-1.

The present invention can prevent the flow of the center pipe coupled with the mounting plate through the laminated plates forming the coolant flow portion and the oil flow portion, thereby preventing the poor connection between the center pipe and the mounting plate when joining by brazing. There is an advantage.

In addition, since the center pipe may be disposed vertically with respect to the mounting plate, the fastening means may be fastened with an accurate torque when the fastening means passes through the center pipe to fasten the oil cooler to the engine block. There is an advantage that can prevent the oil from leaking in the connecting portion.

1 is a schematic view showing a conventional oil cooler.
2 and 3 are assembled perspective and exploded perspective view showing an oil cooler according to an embodiment of the present invention.
4 and 5 are a plan view showing the flow path of the oil and the flow path of the coolant in the flow path plate of the oil cooler according to an embodiment of the present invention.
Figure 6 is an oil cooler according to an embodiment of the present invention is coupled to the engine by the fastening means, the oil filter is coupled to the fastening means, the oil flow path formed by the engine and the oil cooler and the oil filter in communication with each other Cross-section.
7 to 11 are various embodiments of the mounting plate and the center pipe in the oil cooler of the present invention.

Hereinafter, the oil cooler of the present invention having the configuration as described above will be described in detail with reference to the accompanying drawings.

2 and 3 is an assembled perspective view and an exploded perspective view showing an oil cooler according to an embodiment of the present invention, Figures 4 and 5 are the flow path of the oil in the flow path plate of the oil cooler according to an embodiment of the present invention and 6 is a plan view illustrating a flow path of the coolant, and FIG. 6 is an oil cooler coupled to an engine by a fastening means, an oil filter coupled to a fastening means, and an engine, an oil cooler, and an oil filter according to an embodiment of the present invention. Is a cross-sectional view showing an oil flow path formed in communication with each other.

As shown, the oil cooler 1000 according to the exemplary embodiment of the present invention has a mounting plate 100, an upper plate 200, a plurality of flow path plates 300, a lower plate 400, and a center pipe 600. It can be configured as. In addition, all plates except the center pipe 600 may be stacked and coupled in the above order from the upper side to the lower direction, and the cover plate 500 may be further stacked and coupled to the lower side of the lower plate 400. In addition, the center pipe 600 may be coupled to penetrate through all the plates except the mounting plate 100, and an upper end of the center pipe 600 may be coupled to the mounting plate 100.

First, a plurality of flow path plates 300 are stacked to form an oil flow part 301 through which oil flows and a coolant flow part 302 through which coolant flows, and through holes penetrating up and down in the flow path plates 300. 300a is formed.

More specifically, the flow path plate 300 may include, for example, a first plate 310 and a second plate 320, and the first plate 310 and the second plate 320 are alternately stacked in the height direction. As a result, the oil flow part 301 through which the oil flows and the coolant flow part 302 through which the coolant flows may be alternately formed. In addition, a first communication hole 303 and a second communication hole 304 penetrating up and down are formed in the first plate 310 and the second plate 320 to communicate with the oil flow part 301. A third communication hole 305 and a fourth communication hole 306 penetrating up and down may be formed to communicate with the 302. In this case, the first communication hole 303 and the second communication hole 304 formed in the first plate 310 protrudes in the upper direction of the circumference thereof, and the third communication hole 305 and the fourth communication hole 306. The periphery thereof may protrude in a downward direction. The first communication hole 303 and the second communication hole 304 formed in the second plate 320 have a periphery protruding downward and a third communication hole. The 305 and the fourth communication hole 306 are protruded in a circumferential direction upward, and the protruding portions of the corresponding communication holes of the first plate 310 and the second plate 320 abut each other to braze or the like. As a result, the oil flow portion 301 is formed between the lower surface of the first plate 310 and the upper surface of the neighboring second plate 320 and the first plate 310 neighboring the lower surface of the second plate 320. Cooling water flow portion 302 may be formed between the upper surface of the). That is, the first plate 310 and the second plate 320 are alternately stacked in the height direction, and an oil flow path and a coolant flow path are formed along the protruding directions of the first communication holes 303 and the fourth communication holes 306. Can be. In addition, an inner pin 350 may be interposed between the lower surface of the first plate 310 forming the oil flow part 301 and the upper surface of the neighboring second plate 320 to improve heat exchange efficiency. .

The upper plate 200 has a through hole 200a penetrating up and down, and the through hole 200a of the upper plate 200 is stacked so as to be at a position corresponding to the through hole 300a of the flow path plates 300. The upper plate 200 may be stacked and coupled to the upper ends of the flow path plates 300. In addition, the upper plate 200 may be coupled to the flow path plate 300 to form a flow path through which the oil flows and a flow path through which the coolant flows. At this time, the upper plate 200 is a hole which passes through the upper and lower portions so as to communicate with each other is inserted into the communication portion formed in the first communication hole 303 and the second communication hole 304 formed in the flow path plate 300 at a position corresponding to each Oil is passed through the upper plate 200, and holes passing through the upper and lower sides of the upper plate 200 may be formed at corresponding positions to communicate with the cooling water flow unit 302, and the cooling water may pass therethrough. In addition, the inlet pipe 210 through which the coolant flows and the outlet pipe 220 through which the coolant is discharged after the heat exchange with the oil may be coupled to the hole through which the coolant passes through the upper plate 200.

The lower plate 400 is formed with a through hole 400a penetrating up and down, and is stacked such that the through hole 400a of the lower plate 400 is in a position corresponding to the through hole 300a of the flow path plates 300. Lower plates 400 may be stacked and coupled to lower ends of the flow path plates 300. The lower plate 400 may be coupled to the flow path plate 300 to form a flow path through which oil flows. At this time, the lower plate 400 is formed in a position corresponding to the hole passing through the upper and lower to communicate with the second communication hole 304 formed in the flow path plate 300 can pass the oil, the lower plate 400 Holes may be formed at corresponding positions such that the protruding portions of the third communication hole 305 and the fourth communication hole 306 through which the coolant flows in the flow path plate 300 are inserted.

The cover plate 500 may be coupled to the lower side of the lower plate 400, and the cover plate 500 may be provided with an oil outlet 510 through which oil is discharged, so that the oil outlet 510 may be formed of the flow path plates 300. It may be in communication with the two communication holes (304).

The mounting plate 100 has a through hole 100a penetrating the upper and lower surfaces of the plate 110, and the through hole 100a of the mounting plate 100 is formed through the through holes 300a and the upper plate of the flow path plates 300. The upper plate 200 may be stacked and coupled to the top plate 200 to be positioned at a position corresponding to the through hole 200a of the 200. And the mounting plate 100 is formed recessed groove 150 is concave upward in the lower surface of the peripheral portion of the through hole (100a). In addition, an oil inlet 160 through which oil is introduced may be formed in the mounting plate 100, and the mounting plate 100 may form a flow path through which oil flows along with the upper plate 200.

Thus, the oil flowing into the oil inlet 160 formed in the mounting plate 100 passes through the hole formed in the upper plate 200 and the first communication holes 303 formed in the flow path plates 300. And flow through the oil outlet 510 formed in the cover plate 500 after passing through the holes of the lower plate 400 and the second communication hole 304 formed in the flow path plates 300. have. In addition, the coolant flowing into the inlet pipe 210 coupled to the upper plate 200 is distributed to the coolant flow units 302 through the third communication holes 305 formed in the flow path plates 300 and then flows therethrough. Passing through the fourth communication holes 306 formed in the flow path plates 300 may be discharged through the outlet pipe 220 coupled to the upper plate 200. At this time, the oil having a relatively high temperature flowing along the oil flow portion 301 formed by the flow path plates 300 and the cooling water having a relatively low temperature flowing along the cooling water flow portion 302 are exchanged with the cooling water. The oil can be cooled by this.

In this case, the center pipe 600 is formed in a tubular shape to the through holes 200a, 300a, and 400a formed in the upper plate 200, the plurality of flow path plates 300, the lower plate 400, and the cover plate 500. It can be inserted and combined. And the center pipe 600 is inserted into the upper end is placed in the settling groove 150 formed in the mounting plate 100, the upper surface and the outer peripheral surface of the center pipe 600 is supported by the settling groove 150, the center pipe 600 may be firmly coupled to the mounting plate 100.

Thus, the oil cooler of the present invention can prevent the flow of the center pipe coupled with the mounting plate through the stacked plates forming the coolant flow portion and the oil flow portion, and thus, poor bonding between the center pipe and the mounting plate during joining by brazing. Can be prevented.

In addition, as shown in FIG. 6, the oil cooler 1000 of the present invention may be coupled to the engine 2000 or the transmission using a fastening means 1500, and the fastening means 1500 having the locking portion 1510 formed on the lower side is oil. The upper side of the fastening means 1500 is fastened and coupled to the engine 2000 by being inserted to pass through the center pipe 600 of the cooler 1000, thereby between the engine 2000 and the engaging portion 1510 of the fastening means 1500. The oil cooler 1000 may be fixed in a sandwiched form. At this time, the oil inlet 160 of the oil cooler 1000 is connected to the oil inflow passage 2100 formed in the engine 2000, the fastening means 1500 is formed in the form of a pipe with a hollow inside and open at both ends is fastened An upper end of the means 1500 may be connected to the oil discharge passage 2200 of the engine 2000. And the lower end of the fastening means 1500, the oil filter 3000 is coupled, the oil inlet of the oil filter 3000 is connected to the oil outlet 510 of the oil cooler 1000, the oil discharge of the oil filter 3000 It may be connected to the lower end of the additional fastening means (1500). Thus, after the oil having a high temperature flowing from the engine 2000 passes through the oil cooler 1000 and is cooled, the foreign material is filtered while the oil filter 3000 passes through the oil filter 3000, and the clean oil passes through the fastening means 1500. It can be configured to return to.

At this time, the oil cooler of the present invention, since the center pipe can be disposed exactly vertically with respect to the mounting plate, the fastening means with the correct torque when the fastening means passes through the center pipe using the fastening means to fasten the oil cooler to the engine. This can be fastened, and thus there is an advantage in that the oil can be prevented from being leaked in a portion where the oil flow path of the engine and the oil flow path of the oil cooler are connected.

7 to 11 are views showing various embodiments of the mounting plate and the center pipe in the oil cooler of the present invention.

First, referring to FIG. 7, the mounting plate 100 may include a plate 110 having a through hole 100a penetrating the upper and lower surfaces thereof, and a first vertical portion 111 extending upward from a circumference of the through hole 100a. ), And a first horizontal portion 112 extending toward the inside of the through hole 100a from the first vertical portion 111, and includes a first vertical portion 111 and a first horizontal portion ( The recess 150 may be formed to be concave upward from the lower surface of the plate 110 by the 112. And the upper end of the center pipe 600 is inserted into the settling groove 150 may be coupled. At this time, the first vertical portion 111 and the first horizontal portion 112 of the mounting plate 100 are formed by pressing the plate 110 so that a portion of the through hole 100a is drilled, and at the same time, the through hole 100a. Circumferential portion of the plate 110 is formed recessed groove 150 of the shape concave upward from the lower surface of the plate 110, the first vertical portion 111 and the first horizontal portion 112 is the upper side of the upper surface of the plate 110 It may be formed in a convex protruding form.

Thus, the outer circumferential surface of the upper end of the center pipe 600 is supported in contact with the inner surface of the first vertical portion 111 of the mounting plate 100, and the upper surface of the upper end of the center pipe 600 is supported by the first horizontal portion of the mounting plate 100 ( 112, the center pipe 600 may be firmly coupled to and fixed to the mounting plate 100.

Referring to FIG. 8, in the mounting plate 100, a second vertical portion 113 extends downward from the first horizontal portion 112, such that the first vertical portion 111 and the second vertical portion 113 are formed. It may be formed side by side spaced apart from each other to face each other. In addition, the upper end of the center pipe 600 may be inserted into and coupled to the settling recess 150 formed by the first vertical portion 111, the first horizontal portion 112, and the second vertical portion 113. Thus, since the upper three sides of the center pipe 600 are supported, the center pipe 600 may be more firmly coupled to and fixed to the mounting plate 100.

9, the mounting plate 100 may be formed with a first vertical portion 1110, a first horizontal portion 112, and a second vertical portion 113 as described above, and a center pipe 600. The concave step groove 610 is formed at the upper inner circumference to form a protrusion 620 protruding upward from the inside of the step groove 620 in a radial direction, and the protrusion 620 is a settled groove ( It can be inserted into the coupling 150. Thus, the four upper surfaces of the center pipe 600 can be supported.

At this time, the radially inner surface of the second vertical portion 113 is formed to be the same as the outer circumferential surface of the center pipe 600 or the outside, so that the fastening means 1500 from the lower side to the upper direction inside the center pipe 600. When inserted into the fastening means 1500 may be prevented from being caught in the second vertical portion (113).

10 and 11, a fixing groove 150-1 may be formed in the first horizontal portion 112, which is a portion forming the settling groove 150 of the mounting plate 100, to be concave upward from the lower surface thereof. In addition, the center pipe 600 has a fixing protrusion 630 protruding from the upper surface to the upper side, and the fixing protrusion 630 may be inserted into and coupled to the fixing groove 150-1. At this time, the fixing groove 150-1 and the fixing protrusion 630 may be spaced apart from each other along the circumferential direction.

Thus, the coupling force between the mounting plate 100 and the center pipe 600 may be increased, and the center pipe 600 may not be rotated with respect to the central axis in the state in which the center pipe 600 is assembled to the mounting plate 100.

The present invention is not limited to the above-described embodiments, and the scope of application of the present invention is not limited to those of ordinary skill in the art to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Of course, various modifications can be made.

1000: Oil Cooler
100: mounting plate 100a: through hole
110: plate 111: first vertical portion
112: first horizontal portion 113: second vertical portion
150: settling groove 150-1: fixed groove
160: oil inlet
200: upper plate 200a: through hole
210: inlet pipe 220: outlet pipe
300: Euro plate 300a: through hole
301: oil flow portion 302: coolant flow portion
303: first communication hole 304: second communication hole
305: third communication hole 306: fourth communication hole
308: flow control beads 309: protruding beads
310: first plate 320: second plate
350: inner pin
400: lower plate 400a: through hole
404: oil communication hole
500: cover plate 500a: through hole
510: oil outlet
600: center pipe
610: step groove 620: protrusion
630: fixed protrusion
1500: fastening means 1510: locking portion
2000: engine
2100: oil inflow passage 2200: oil discharge passage
3000: Oil Filter

Claims (8)

A plurality of flow path plates 300 forming an oil flow part 301 through which the oil flows by lamination and a coolant flow part 302 through which the coolant flows, and through holes 300a penetrating up and down;
The through hole 100a penetrating the upper and lower surfaces of the plate 110 is formed, and the recessed groove 150 is formed to be concave upward from the lower surface of the circumferential portion of the through hole 100a. A mounting plate 100 stacked on the upper side to form a flow path through which oil flows; And
A center pipe 600 inserted into and coupled to the through holes 300a of the plurality of flow path plates 300 and having an upper end inserted into the settling groove 150;
Oil cooler comprising a.
The method of claim 1,
Stacked on the lower side of the laminated flow path plate 300 to form a flow path through which oil flows, and a through hole 500a penetrating the upper and lower surfaces is formed so that the lower end of the center pipe 600 is inserted into the through hole 500a. Oil cooler further comprises a combined cover plate (500).
The method of claim 1,
The mounting plate 100,
Plate 110 having a through hole 100a penetrating the upper and lower surfaces, a first vertical portion 111 extending upwardly from a circumferential portion of the through hole 100a, and a through hole in the first vertical portion 111. It comprises a first horizontal portion 112 extending toward the inner side of (100a),
Oil cooler, characterized in that the upper end of the center pipe (600) is coupled to the settling groove (150) formed by the first vertical portion (111) and the first horizontal portion (112).
The method of claim 3,
The upper end of the center pipe 600 is oil cooler, characterized in that coupled to the contact surface of the first vertical portion 111 and the first horizontal portion 112 of the mounting plate (100).
The method of claim 3,
The mounting plate 100,
It further comprises a second vertical portion 113 formed extending downward from the first horizontal portion 112 and spaced apart from the first vertical portion 111,
Oil, characterized in that the upper end of the center pipe 600 is inserted into the settling groove 150 formed by the first vertical portion 111, the first horizontal portion 112 and the second vertical portion 113 is coupled. Cooler.
The method of claim 5,
The center pipe 600 has a stepped groove 610 concave at an upper inner circumference thereof, and a protrusion 620 formed at an outer side of the stepped groove 610 in a radial direction has a settled groove of the mounting plate 100. Oil cooler, characterized in that inserted into the 150).
The method of claim 6,
The inner surface of the second vertical portion 113 of the mounting plate 100 in the radial direction is the same as the inner circumferential surface of the center pipe (600) or oil cooler, characterized in that formed to be located outside the inner circumferential surface.
The method of claim 1,
Fixing groove 150-1 is formed in the recess groove 150 of the mounting plate 100, and the center pipe 600 has a fixing protrusion 630 formed at an upper end thereof.
The oil cooler, characterized in that the fixing protrusion 630 is inserted into the fixing groove 150-1.

Images