JP2005112174A - Cooling system for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling system for a vehicle capable of supplying cooling air of a proper amount to a condenser. <P>SOLUTION: This cooling system for the vehicle comprises a radiator 9 for cooling an engine disposed at the front end of a engine room 19 of the vehicle along the lateral direction of the vehicle and a condenser for cooling an air conditioner disposed at the front of the radiator 9. The condenser and the radiator 9 are cooled by cooling air W flowing from the front end of the vehicle into the engine room 19. The condenser comprises a first condenser 11 disposed oppositely to the radiator 9 and a second condenser 13 disposed on the side of the radiator 9. The condenser also comprises a duct 25 and a door 45 capable of switching the destination of the cooling air W between, the first condenser 11 and the radiator 9, the first condenser 11, or the radiator 9 and the second condenser 13. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vehicle cooling system, and more particularly to a structure for switching cooling air to be supplied to a heat exchanger disposed in the front of the vehicle.

  Conventionally, an engine room is provided at the front of the vehicle, and a radiator and a condenser are disposed along the vehicle width direction at the front end in the engine room (see, for example, Patent Document 1).

  This radiator cools engine coolant by heat radiation, and the condenser radiates and cools the cooling medium of the air conditioner.

  FIG. 8 is a cross-sectional view showing a conventional vehicle body front structure. As shown in the figure, a bumper fascia 101 is provided at the front end of the vehicle, and a bumper armature 103 is provided behind the bumper fascia 101 along the vehicle width direction. The bumper armature 103 is attached to the front end of the side member 107 via a stay 105.

Further, the front ends of the left and right side members 107 and 107 are bridged along the vehicle width direction by a radiator core support 109, and a heat exchanger including a radiator 111 and a condenser 113 is attached to the radiator core support 109. ing. A fan 115 is provided behind the radiator 111 and the condenser 113, and cooling air is drawn into the engine room 117 from the front end of the vehicle by driving and rotating the fan 115.
JP 2001-121941 A

  However, in the conventional vehicle cooling system, the condenser 113 is disposed on the front side of the radiator 111 so as to face the radiator 111. That is, when viewed from the front of the vehicle, the radiator 111 and the capacitor 113 are arranged to overlap each other.

  For this reason, even when the required air volume of the cooling air W supplied to the condenser 113 is the maximum and the cooling air to the radiator 111 is not so much required, the maximum amount of the cooling air W flows through the radiator 111. Due to the structure, there is a problem in that unnecessary cooling is performed and power consumption is increased by increasing the output of the driving motor that drives the fan 115 more than necessary.

  Therefore, an object of the present invention is to provide a vehicle cooling system capable of supplying an appropriate amount of cooling air to a condenser.

  In order to achieve the above object, in the vehicle cooling system according to claim 1, a radiator for cooling the engine disposed along a vehicle width direction at a front end portion of an engine room of the vehicle, and disposed on a front side of the radiator. And a condenser for cooling the air conditioner, wherein the condenser and the radiator are cooled by cooling air flowing into the engine room from the front end of the vehicle, wherein the condenser is disposed opposite to the radiator. And a second condenser disposed on the side of the radiator, and when the cooling air is supplied to the first condenser and the radiator, and to the first condenser, the radiator and the second condenser. It is characterized in that a switching means capable of switching between the case of feeding and the like is provided.

  The vehicle cooling system according to claim 2 is the vehicle cooling system according to claim 1, wherein the switching unit includes a duct that communicates the rear portion of the second capacitor and the rear portion of the first capacitor. The door comprises a door rotatably supported to open and close the passage of the duct.

  The vehicle cooling system according to claim 3 is the vehicle cooling system according to claim 1 or 2, wherein the second capacitor is disposed on both left and right sides of the first capacitor along a vehicle width direction. It is characterized by that.

  The vehicle cooling system according to claim 4 is the vehicle cooling system according to any one of claims 1 to 3, wherein the duct extends from the rear portion of the second capacitor along the vehicle width direction. It is characterized by extending to the rear part of one capacitor.

  A vehicle cooling system according to a fifth aspect is the vehicle cooling system according to any one of the first to fourth aspects, wherein a blowing unit is disposed behind the first condenser and the radiator, The end of the duct is arranged facing the air blowing means.

  A vehicle cooling system according to a sixth aspect is the vehicle cooling system according to the fifth aspect, wherein the air blowing means is a fan that is driven to rotate.

  According to the vehicle cooling system of the first aspect of the present invention, since the capacitor is composed of the first capacitor and the second capacitor and the switching means for distributing the cooling air supply destination is provided, an engine such as a climbing slope is provided. When cooling of the engine is required to the maximum, cooling air is supplied to the radiator and the first condenser, and when not much engine cooling such as idling is required, the radiator, the first condenser and the second condenser are supplied. It can be switched as appropriate to feed to the capacitor.

  In addition, since the capacitor area can be increased by configuring the capacitor from the first capacitor and the second capacitor, the cooling performance of the capacitor can be greatly improved. Further, when an electric fan that reduces the thickness of the capacitor or supplies cooling air to the capacitor is provided, it is possible to save power of the electric fan.

  According to the vehicle cooling system of the second aspect, since the switching unit includes the duct and the door, the cooling air can be supplied to the second condenser more efficiently.

  According to the vehicle cooling system of the third aspect, since the second capacitor is disposed along the vehicle width direction on both the left and right sides of the first capacitor, the front surface area of the capacitor is greatly increased. . Further, since the cooling air sent from the front of the vehicle strikes the first capacitor and the second capacitor in a plane, the cooling efficiency of the second capacitor is improved.

  According to the vehicle cooling system of the fourth aspect, since the duct is disposed along the vehicle width direction, the size in the vehicle front-rear direction can be reduced, and the space in the engine room can be reduced. Absent.

  According to the vehicle cooling system of the fifth aspect, since the end portion of the duct is arranged toward the air blowing means, the air blowing means is operated to draw the air in the duct toward the air blowing means side. The condenser 2 can be efficiently cooled.

  According to the vehicle cooling system of the sixth aspect, since the air blowing means is a fan that is driven and rotated, the radiator, the first capacitor, and the second capacitor can be reliably and efficiently cooled.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 shows a front part of a vehicle provided with a cooling system according to an embodiment of the present invention, FIG. 2 shows a cross-sectional view taken along line AA of FIG. 1, and FIG. It is the figure which abbreviate | omitted the 2nd capacitor | condenser.

  A bumper fascia 1 is disposed along the vehicle width direction at the front edge of the vehicle, and a bumper armature 3 curved at a distance from the bumper fascia 1 is provided behind the bumper fascia 1 (back side). Has been placed. Both left and right ends of the bumper armature 3 are attached to side members 7 extending along the vehicle front-rear direction via stays 5.

  Further, a radiator 9, a first capacitor 11, and a second capacitor 13 are disposed on the rear side of the bumper armature 3.

  As shown in FIG. 1, a radiator core support 15 is disposed at the center in the vehicle width direction, and a radiator 9 and a first capacitor 11 are attached to the radiator core support 15. Among these, the first capacitor 11 is disposed on the front side, and the radiator 9 disposed opposite to the first capacitor 11 is disposed on the rear side. Further, behind the radiator 9 and the first condenser 11, fans 17 serving as blowing means are arranged on the left and right, respectively. These fans 17 and 17 are rotationally driven by a drive motor (not shown), and by rotating the fan 17, cooling air can be drawn into the engine room 19 from the front end of the vehicle. As shown in FIGS. 2 and 3, the first capacitor 11 and the radiator 9 are disposed so as to wrap in the vehicle front-rear direction, and when viewed from the front of the vehicle, both appear to overlap each other. . In addition, 4 of FIG. 2 is a headlight.

  Further, second capacitors 13 and 13 are arranged on the left and right sides of the radiator core support 15, respectively. These left and right second capacitors 13 and 13 communicate with each other along the vehicle width direction via upper and lower pipes 21 and 23. As shown in FIGS. 2 and 3, the side members 7 are arranged on the left and right between the second capacitor 13 and the radiator core support 15.

  And as shown in FIG. 4, the duct 25 is each arrange | positioned at the left-right both sides | surfaces of the radiator core support 15. As shown in FIG. The duct 25 is formed from a top surface 27, a bottom surface 29, and side surfaces 31, 33 along the longitudinal direction so as to have a substantially rectangular shape in cross section. Suitable for. Further, the other end side is composed of an upper duct portion 37 and a lower duct portion 39 that are bifurcated at intervals in the vertical direction. A through hole 41 is formed in the inner side surface 31 disposed on the inner side in the vehicle width direction of the side surfaces 31 and 33, and the through hole 41 is connected to the radiator via the upper duct portion 37 and the lower duct portion 39. The core support 15 is inserted into the side surface 43. Therefore, the cooling air sent to the opening 35 is configured to be sent to the inside of the radiator core support 15 from the through hole 41 on the inner side surface via the upper duct portion 37 and the lower duct portion 39.

  Here, as shown in FIG. 1, the second capacitor 13 is disposed along the vehicle width direction on the front surface of the opening 35 of the duct 25, and the duct 25 is pivotally supported inside the duct 25. A door 45 is provided. In the duct 25 on the right side of FIG. 1, when the door 45 is disposed at the position indicated by the alternate long and short dash line, the passage of the duct 25 is blocked and the cooling air does not flow backward, while the door 45 is rotated to the position of the solid line. The cooling air flows backward in the duct 25 in which the passage of the duct 25 is released.

  Below, the flow of the cooling air by the cooling system of this embodiment is demonstrated.

  FIG. 5 shows the flow of the cooling air W at the front of the vehicle body when the door 45 in the duct 25 is opened and closed, with the door 45 (shown by a solid line) being opened on the right side of the vehicle width direction center. The left side shows a state in which the door 45 is closed.

  As shown in FIG. 6 in which the left side of FIG. 5 is enlarged, when the door 45 is closed, the wind passage inside the duct 25 is blocked and the cooling air W does not pass through the inside of the duct 25. Almost all is fed to the radiator 9 and the first capacitor 11 and not fed to the second capacitor 13. This is applied when cooling the engine and AT oil cooler is prioritized over cooling the air conditioner.

  On the other hand, as shown in FIG. 7 in which the right side of FIG. 5 is enlarged, when the door 45 is opened, the wind passage inside the duct 25 is released, and the cooling air W is inserted through the inside of the duct 25. W is fed not only to the radiator 9 and the first capacitor 11 but also to the second capacitor 13. This is applied when cooling the air conditioner is prioritized over the cooling of the engine or AT oil cooler.

  Then, the cooling air W that has passed through the second condenser 13 passes through the inside of the duct 25 and is sent to the fan 17 from the side surface of the radiator core support 15.

  Next, functions and effects of the cooling system of this embodiment will be described.

  As described above, since the switching means including the duct 25 and the door 45 is provided, the cooling air W from the front end of the vehicle is sent to the radiator 9 and the first capacitor 11 and also to the second capacitor 13. Therefore, the fuel temperature of the vehicle can be improved by keeping the water temperature of the radiator 9 constant. Specifically, when the vehicle travels uphill on an uphill road, the door 45 is closed in order to maximize the amount of cooling air W supplied to the radiator 9, and when idling or the like is performed, Since there is no need to increase the cooling performance, the switching of opening the door 45 can be appropriately performed according to the traveling situation.

  Further, since the capacitor is divided into the first capacitor 11 and the second capacitor 13, the front surface area of the entire capacitor can be expanded, and the cooling performance can be improved.

  The present invention is not limited to the above-described embodiments, and various changes and modifications can be made based on the technical idea of the present invention.

It is the schematic which looked at the cooling system of the vehicle front part by embodiment of this invention from upper direction. It is sectional drawing by the AA line of FIG. 1, and has shown the headlight and the bumper fascia with the dashed-two dotted line. It is the figure which abbreviate | omitted the 1st capacitor | condenser and the 2nd capacitor | condenser among FIG. It is a perspective view which shows the duct by embodiment of this invention. It is the schematic which shows the flow of the cooling air in the cooling system of FIG. It is the schematic which expands and shows the flow of the cooling wind in the vehicle width direction left side of FIG. It is the schematic which expands and shows the flow of the cooling wind in the vehicle width direction right side of FIG. It is sectional drawing which looked at the cooling system of the conventional vehicle front part from upper direction.

Explanation of symbols

W ... Cooling air 9 ... Radiator 11 ... First capacitor 13 ... Second capacitor 17 ... Fan (air blowing means)
19 ... Engine room 25 ... Duct (switching means)
45 ... Door (switching means)

Claims (6)

An engine cooling radiator (9) disposed along a vehicle width direction at a front end of an engine room (19) of the vehicle; an air conditioner cooling condenser disposed on the front side of the radiator (9); A cooling system for a vehicle that cools the condenser and the radiator (9) by cooling air (W) flowing into the engine room (19) from the front end of the vehicle,
The capacitor is composed of a first capacitor (11) disposed opposite to the radiator (9) and a second capacitor (13) disposed on the side of the radiator (9), and
The destination of the cooling air (W) is any one of the first capacitor (11) and the radiator (9) and the first capacitor (11), the radiator (9) and the second capacitor (13). A vehicle cooling system comprising switching means (25, 45) capable of switching to   The switching means is turnable to open and close a duct (25) communicating the rear part of the second capacitor (13) and the rear part of the first capacitor (11), and the passage of the duct (25). The vehicle cooling system according to claim 1, comprising a supported door (45).   The vehicle cooling system according to claim 1 or 2, wherein the second capacitor (13) is arranged along the vehicle width direction on both left and right sides of the first capacitor (11).   The said duct (25) is extended from the rear part of the 2nd capacitor | condenser (13) to the rear part of the 1st capacitor | condenser (11) along a vehicle width direction. The vehicle cooling system according to claim 1.   The blower means (17) is disposed behind the first condenser (11) and the radiator (9), and the end of the duct (25) is disposed toward the blower means (17). The vehicle cooling system according to any one of claims 1 to 4.   The vehicle cooling system according to claim 5, wherein the air blowing means is a fan (17) configured to be freely rotatable.

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