JPH0527232U - Vehicle cooling system - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object of the present invention to provide a vehicle cooling device capable of lowering the vehicle tip. A cooling device 71 for a vehicle according to the present invention includes a radiator portion 73 having a radiator portion side cooling fan 93 therein, and a condenser arranged coaxially with the radiator portion 73 to condense a refrigerant for air conditioning. Part side cooling fan 11
3, a condenser unit 75 provided therein, a motor 77 disposed between the radiator unit 73 and the condenser unit 75 to drive the fans 93 and 113, respectively, and a radiator unit side cooling fan 93. A tubular cooling device main body 83 in which a radiator part side air introduction part 79 and a condenser part side air introduction part 81 for supplying air to the condenser part side cooling fan 113 are integrally formed.
Are arranged in the engine room 33 along a direction intersecting the vehicle front-rear direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle cooling device for cooling a coolant for cooling an engine and a coolant for air conditioning.

[0002]

[Prior Art]

 FIG. 8 shows a conventional vehicle cooling device 1. In the figure, a vehicle cooling device 1 includes a condenser main body 3 that condenses an air-conditioning refrigerant, a radiator 5 that cools an engine cooling refrigerant, and a fan 7 that cools the radiator 5.

The capacitor body 3 has a rectangular shape and a receiver tank 9 for storing a high-temperature and high-pressure liquid refrigerant is attached to a side portion thereof. An upper tank 11 and a lower tank 13 are vertically connected to the radiator 5, respectively. The upper tank 11 is provided with a cooling water inlet which is opened and closed by a radiator cap 15. Further, a radiator refrigerant inlet portion 5a is formed in the upper tank 11, and a radiator hose 17 is connected to the radiator refrigerant inlet portion 5a. Further, a radiator refrigerant outlet section 5b is connected to the lower tank 13, and a radiator hose 19 is connected to the radiator refrigerant outlet section 5b. The radiator refrigerant inlet portion 5a and the refrigerant outlet portion 5b are communicated with the washer jacket of the engine 45 (see FIG. 9).

A mounting portion 23 is provided on a side portion of the radiator 5, and a fan shroud 21 is mounted on the mounting portion 23. The fan 7 includes a fan shroud 21, a blade portion 27 arranged in an opening 25 formed in the central portion of the fan shroud 21, and a motor 29 having the blade portion 27 fixed to a drive shaft 31. It is configured.

The vehicle cooling device 1 is arranged in an engine room 33 on the front side of the vehicle as shown in FIG. The engine room 33 is formed by being surrounded by an engine hood 35, a radiator grill 37 formed on the vehicle front side of the engine hood 35, an undercover 39, a dash panel 41, and a fender cover (not shown). .. A horizontal engine 45 is arranged on the side of the dash panel 41 in the engine room 33, and wheels 47 driven by the engine 45 are arranged beside the engine 45.

Between the engine 45 and the radiator grill 37, the vehicle cooling device 1 is arranged and fixed in the order of the condenser body 3, the radiator 5 and the fan 7 from the front side of the vehicle.

In the vehicle cooling device 1, the air flowing into the radiator grill 37 is blown to the capacitor body 3 to condense the high-temperature and high-pressure gas-like refrigerant introduced into the condenser body 3. Then, the air that has passed through the condenser body 3 is blown to the radiator 5 to cool the refrigerant that cools the engine 45. The radiator 5 is also cooled by the fan 7 driven by the motor 29.

[0008]

[Problems to be solved by the device]

 However, in the above-described conventional vehicle cooling device 1, the air-conditioning condenser main body 3 and the engine cooling refrigerant cooling radiator 5 are arranged toward the opening on the front side of the vehicle to cool the radiator 5. Since 7 is a structure that is attached to the front of the condenser body 3 or the rear of the radiator, the shape of the front end of the vehicle becomes higher by providing the opening at the front of the vehicle, and the air resistance increases and the fuel consumption deteriorates and There are restrictions such as difficulty in forming a lower proportion on the upper vehicle tip. Further, by installing the condenser body 3 and the radiator 5 in series, there is a problem that the ventilation resistance remarkably increases and the fan driving motor 29 becomes large.

Therefore, as shown in FIG. 10, the condenser 53 is formed into a cylindrical shape, the condenser 53 is arranged below the lower wall 55 a of the air flow passage 55, and the radiator 57 is provided on the downstream side of the air flow passage 55. A vehicle cooling device 51 provided with a fan 59 is proposed in Japanese Utility Model Laid-Open No. 1-145936. According to this vehicle cooling device 51, since the condenser 53 and the radiator 57 are not installed at the vehicle front end portion, the vehicle front end portion is made to have a lower proportion than the vehicle cooling device 1 to reduce fuel consumption and ventilation resistance. Can be reduced.

However, in the above-described vehicle cooling device 51, the cylindrical condenser 53 is arranged below the air flow path 55 leading to the radiator 57, and the radiator 57 is arranged in front of the engine 61. The interior of the engine room 63 becomes longer in the vehicle front-rear direction.

Further, in addition to the size of the condenser 53, the air flow path 55 that guides the air to the radiator 57 is required, so that there is a problem that the lower end portion of the vehicle cannot be made to have a lower proportion.

[0012] Therefore, an object of the present invention is to provide a small-sized vehicle cooling device capable of lowering the vehicle front end portion.

[0013]

[Means for Solving the Problems]

 To achieve the above object, in the present invention, a radiator part provided with a fan for cooling the refrigerant is provided inside a cylindrical radiator body into which a refrigerant for cooling the engine is introduced, and the radiator part is arranged coaxially with the radiator part. A condenser part into which the refrigerant for air conditioning is introduced, and a condenser part provided with the fan for cooling the refrigerant, and drive shafts arranged on both sides between the radiator part and the condenser part. Driving means for rotationally driving the cooling fan for cooling the radiator and the cooling fan for cooling the condenser, and supplying air to the cooling fan for cooling the radiator and the cooling fan for cooling the condenser, respectively. A cylindrical cooling device body that is integrally formed with the air introduction part is installed in the engine room of the vehicle along the direction that intersects the vehicle front-rear direction. It is characterized in that was.

[0014]

[Action]

 According to the present invention, the air introduced into the engine room from the front side of the vehicle is supplied to the inside of the radiator main body from the air introduction section on the radiator section side, and this air is cooled by the refrigerant on the radiator section side. Is blown onto the radiator body by a fan. The radiator cooling fan is rotationally driven by the driving means. At this time, the refrigerant that has recovered the heat from the engine is introduced into the radiator body and is cooled by the refrigerant cooling fan. Then it is sent back to the engine to recover the heat.

On the other hand, on the condenser side, air introduced into the engine room from the front side of the vehicle is supplied to the inside of the condenser body from the condenser side air introduction section, and this air is cooled by the condenser body side refrigerant. Is blown onto the body of the condenser by a fan. At this time, a high-temperature and high-pressure gaseous refrigerant is introduced into the condenser body by a compressor or the like, and is condensed by a refrigerant-cooling fan to become a high-temperature and high-pressure liquid refrigerant. When it is sent to the evaporator and vaporized, it takes heat from the cooling air.

According to the present invention, by arranging the cylindrical cooling device along the direction intersecting the vehicle front-rear direction, it becomes possible to make the vehicle front end portion thinner and lower.

Further, by making the radiator portion and the condenser portion cylindrical and arranging them coaxially, since the condenser portion is not arranged in front of the radiator portion, the ventilation resistance can be reduced. Moreover, since the air that has passed through the condenser does not flow into the radiator, it is possible to improve the cooling efficiency of the radiator, the radiator can be downsized, and the entire device can be downsized. ..

Further, since the radiator portion and the condenser portion are arranged along the direction intersecting with the vehicle front-rear direction, the engine room can be shortened.

[0019]

【Example】

 Next, an embodiment of a vehicle cooling device according to the present invention will be described.

First Embodiment As shown in FIG. 1, a vehicle cooling device 71 of the present embodiment includes a cooling device main body 83, a duct 85 connected to a radiator portion side air introducing portion 79, and a condenser portion side air. It is composed of a duct 87 connected to the introduction portion 81 and a cover 89 (see FIGS. 4 to 6) that covers the cooling device main body 83.

The cooling device main body 83 has a cylindrical radiator portion 73, a condenser portion 75 coaxially connected to the radiator portion 73, and a motor arranged between the radiator portion 73 and the condenser portion 75. 77, a radiator section side air introduction section 79, and a condenser section side air introduction section 81 are integrally formed. In addition, in FIG. 1, the arrow a indicates the flow of air, and the arrow b indicates the flow of the refrigerant.

The radiator portion 73 is composed of a cylindrical radiator body 91 and a radiator portion side refrigerant cooling fan 93 arranged inside the radiator body 91. An inlet end tank 97 is formed on one side of the radiator body 91, and an outlet end tank 99 is formed on the other side. The inlet end tank 97 and the outlet end tank 99 have a plurality of heat-radiating fins 101 (see FIG. 2) protruding from the outer circumference and a tube wound around the radiator main body 91 in a substantially spiral shape. It is connected by 103. The refrigerant for cooling the engine is introduced from the refrigerant inlet 97a of the inlet end tank 97, passes through the tube 103, and is discharged from the refrigerant outlet 99a of the outlet end tank 99.

A fan 93 for cooling the radiator on the radiator side is rotatably supported by a shaft support 105 on the inlet end tank 97 side via a bearing 107 and attached to a shaft 109. The shaft 109 also serves as the drive shaft of the motor 77, and by driving the motor 77, the shaft 109 is rotationally driven to rotate the fan 93 and send air to the outside of the radiator body 91. This wind cools the heat radiation fins 101 projecting from the tube 103, thereby cooling the refrigerant passing through the tube 103.

The condenser part 75 is composed of a cylindrical condenser body 111 and a condenser part side refrigerant cooling fan 113 arranged inside the condenser body 111. The condenser main body 111 is supported by a bracket 115, and an inlet end tank 117 is formed on one side and an outlet end tank 119 is formed on the other end. The inlet end tank 117 and the outlet end tank 119 are connected to each other with a plurality of heat radiation fins 101 protruding from the outer periphery and a tube 103 spirally wound around the capacitor body 111. The refrigerant for air conditioning is introduced from the refrigerant inlet 117a of the inlet end tank 117, passes through the tube 103, and is discharged from the refrigerant outlet 119a of the outlet end tank 119.

The condenser-side refrigerant cooling fan 113 is rotatably supported by a shaft support 121 on the inlet end tank 117 side via a bearing 123 and is attached to a shaft 125. The shaft 125 also serves as the drive shaft of the motor 77 and is integral with the shaft 109. By driving this motor 77, the shaft 125 is rotationally driven to rotate the fan 113, and blows air toward the outside of the condenser body 111. This heat cools the heat radiation fins 101 protruding from the tube 103, so that the refrigerant passing through the tube 103 is cooled.

The tube 103 spirally wound around the radiator body 91 and the condenser body 111 may be radially wound as shown in FIG.

The motor 77 is disposed between the radiator section 73 and the condenser section 75 and is supported by the bracket 127. The drive shaft is a shaft 109 that rotationally drives the radiator-side refrigerant cooling fan 93, and is a shaft 125 that rotationally drives the condenser-side refrigerant cooling fan 113.

The radiator section side air introducing section 79 is connected to the side section of the radiator section 73 via the mounting bracket 129 and the duct 85, and the condenser section side air introducing section 81 is connected to the side section of the condenser section 75. They are connected via a mounting bracket 131. These section side air introduction sections 79 and 81 are opened toward the vehicle front side opening section and guide the inflowing air to the radiator body 91 and the condenser body 111.

As shown in FIG. 4, the discharge duct 89 has a pair of side walls 133 and 135 formed with insertion holes 89 a and 89 a into which both sides of the cooling device main body 83 are inserted, and the side walls 133 and 135. The guide walls 137 and 139 that connect the two are integrally formed, and are mounted in the engine compartment 33 of the vehicle by the mounting member 141. The guide walls 137 and 139 are cut in the middle of the radiator main body 91 and the condenser main body 111 so as to correspond to the radiator main body 91, and a radiator discharge port 143 is formed downward to correspond to the radiator main body 91. Correspondingly, a radiator discharge port 145 is formed upward.

Next, the arrangement of the vehicle cooling device 71 in the engine room 33 will be described. As shown in FIGS. 5 and 6, the vehicle cooling device 71 includes a radiator portion 73 on the vehicle front side of the engine room 33 of the vehicle along a direction intersecting the vehicle front-rear direction, that is, along the vehicle width direction. And the capacitor section 75 are arranged in parallel.

In the vehicle cooling device 71 configured as described above, the refrigerant that has recovered heat from the engine 45 is introduced into the inlet end tank 97 from the refrigerant inlet 97a through a duct (not shown). Then, after passing through the inside of the tube 103, it is collected in the outlet end tank 99 and returned to the washer jacket of the engine 45 from the refrigerant outlet 119a. At this time, the cooling medium is deprived of heat and cooled when passing through the tube 103 blown with cooling air by the fan 93 for cooling the radiator on the radiator side. The cooling air is obtained by driving the motor 77 and rotating the fan 93 for cooling the radiator side refrigerant. Then, as shown in FIG. 5, after cooling the tube 103, the air is discharged from the radiator discharge port 143 of the discharge duct 89 toward the lower side of the engine room 33 (direction of arrow c). Therefore, the ambient temperature in the engine room 33 does not rise and the temperature does not rise locally, so that the parts do not become hot.

The air-conditioning refrigerant is inserted into the inlet end tank 117 from the refrigerant inlet 117a through a duct (not shown). Then, it passes through the inside of the tube 103, is collected by the outlet end tank 119, and is returned to the air conditioner side from the refrigerant outlet 119a. At this time, the refrigerant is deprived of heat and condensed when passing through the tube 103 blown with cooling air by the condenser-side refrigerant cooling fan 113. The cooling air is obtained by driving the motor 77 to rotate the condenser unit side refrigerant cooling fan 113. Then, as shown in FIG. 6, the air that has cooled the tube 103 is discharged from the condenser discharge port 145 of the discharge duct 89 into the engine room 33 (direction of arrow d).

In this case, since the temperature of the air after cooling the air-conditioning refrigerant is relatively low, the temperature in the engine room 33 is reduced by discharging the air into the engine room 33, which has been heated by the engine 45. Thus, the temperature of the parts in the engine room 33 can be prevented from locally becoming high.

As described above, according to this embodiment, the direction in which the cylindrical cooling device main body 83, in which the radiator portion 73 and the condenser portion 75 are provided on both sides of the motor 77, is intersected with the vehicle front-rear direction. By arranging along the road, the tip of the vehicle can be lowered and the tip of the vehicle can be freely designed in consideration of air resistance.

Further, by making the radiator portion 73 and the condenser portion 73 cylindrical and arranging them coaxially, since the condenser portion 73 is not arranged in front of the radiator portion 75, ventilation resistance is reduced. It is possible to improve the cooling efficiency of the radiator section and the condenser section. Further, since the driving force of the fans 109 and 113 can be reduced, the motor 77 can be downsized.

Further, by driving the fan 93 for cooling the radiator on the radiator side and the 113 fan for cooling the condenser on the condenser side by one motor 77, there is no need to use a fan driving means for the radiator as in the conventional case. ..

Since the air introduced into the radiator section 73 does not pass through the condenser section 75, a large difference between the temperature of the refrigerant introduced into the radiator section 73 and the temperature of the radiator main body 91 should be taken. The radiator body 91 can be made smaller and lighter, and the entire device can be made smaller.

Further, since the radiator portion 73 and the condenser portion 73 are arranged in parallel along the vehicle width direction, the engine room can be shortened.

Second Embodiment Next, a second embodiment will be described with reference to FIG. The same components as those in the first embodiment are designated by the same reference numerals in the drawings, and duplicated description will be omitted.

As shown in FIG. 7, the vehicle cooling device 146 of this embodiment includes both sides of the coupling disc 151 that connects the radiator portion 73 and the condenser portion 75 and supports the motor 77 (on the radiator portion 73 side, the condenser The annular refrigerant outlet side tanks 153, 155 are provided on the portion 75 side), and the heat radiation fins 157 are welded to both sides of the coupling disc 151 in the refrigerant outlet side tanks 153, 155. In addition, a mounting bolt hole 167 through which the mounting bolt penetrates is formed in the flange portion 165 formed around the coupling disc 151.

The coolant outlet 153 a of the coolant outlet side tank 153 of the radiator portion 73 is connected to the periphery of the engine 45, and the periphery of the engine 45 is connected to the coolant inlet 97 a. The refrigerant that has recovered the heat from the engine 45 is sent from the refrigerant inlet 97a to the radiator section 73 and cooled, and then discharged from the refrigerant outlet 153a to the periphery of the engine 45 to recover the heat of the engine 45 again. This cycle is repeated to cool the engine 45.

The refrigerant outlet 155 a of the refrigerant outlet side tank 155 of the condenser unit 75 is connected to the expansion valve 159, and the expansion valve 159 is connected to the evaporator 161. The evaporator 161 is connected to the compressor 163, and the compressor 163 is connected to the refrigerant inlet 117a. Then, the refrigerant gives a low heat source by being evaporated in the evaporator 161, cools the cooling air, and the refrigerant evaporated (vaporized) here is compressed by the compressor 163 to become a high-temperature high-pressure gaseous state. After that, it is sent to the condenser unit 73. The refrigerant (high-temperature and high-pressure gas) sent to the condenser unit 73 is condensed to become a high-temperature and high-pressure liquid refrigerant, enters the expansion valve 159 from the refrigerant outlet 155a, and is decompressed to a low-temperature and low-pressure atomized state. The refrigerant is sent to the evaporator 161. This cycle is repeated to perform air conditioning.

In the vehicle cooling device 147, the gaseous refrigerant of about 80 to 100 ° C. that has exited the compressor 163 on the condenser part 75 side is introduced into the inlet end tank 117 and passes through the tube 103. At this time, it is cooled and condensed by the condenser-side refrigerant cooling fan 113, becomes a liquid at 50 to 70 ° C., and is collected in the refrigerant outlet-side tank 155.

On the other hand, when the heat of the engine on the radiator portion 73 side is recovered and the refrigerant of 85 to 100 ° C. passes through the tube 103 of the radiator main body 91, it is cooled to 80 to 95 ° C. It is collected in the tank 153. Then, the heat of the refrigerant on the radiator side is cooled by the refrigerant having a low temperature (50 to 70 ° C.) in the refrigerant outlet side tank 155 through the radiation fins 157 to be cooled.

Therefore, the refrigerant that has recovered heat from the engine 45 cooled on the radiator section 73 side can be cooled by the refrigerant for air conditioning, and the cooling area by the fan section 93 for cooling the radiator section side refrigerant can be reduced. Therefore, the radiator portion 73 can be downsized.

Further, since the fan 93 can be downsized, the motor 77 can be downsized, and further, the rotation speed of the motor 77 can be reduced, so that the fans 93 and 113 can be reduced. It is possible to reduce noise caused by.

The rate of cooling the refrigerant passing through the radiator section 73 side by the refrigerant passing through the condenser section 75 side can be controlled by changing the area of the heat radiation fins.

Further, in each of the above-described embodiments, the example in which the motor 77 is used as the driving means has been described, but the driving force of the engine 45 may be transmitted to the shafts 109 and 125 via the auxiliary device transmission or the like.

[0049]

[Effect of the device]

 As described above, according to the vehicle cooling device of the present invention, by disposing the cylindrical cooling device along the direction intersecting with the vehicle front-rear direction, it is possible to thin the vehicle front end portion. Therefore, it is possible to lower the tip portion of the vehicle and to freely design the tip portion of the vehicle in consideration of air resistance.

Further, by making the radiator portion and the condenser portion cylindrical and arranging them coaxially, since the condenser portion is not arranged in front of the radiator portion, the ventilation resistance can be reduced. It is possible to improve the cooling efficiency of the radiator part and the condenser part.

Further, by driving the radiator side cooling fan and the condenser side cooling fan by the driving means, the fan driving means for the radiator and the fan driving means for the condenser as in the conventional case are not required. Therefore, the number of parts can be reduced. Further, since the air introduced into the radiator section does not pass through the condenser section, the radiator section can be made compact and lightweight, and the entire device can be made compact.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a vehicle cooling device according to the present invention.

FIG. 2 is a cross-sectional view showing a radiator section taken along line II-II of FIG.

FIG. 3 is a sectional view showing a section of another radiator portion.

FIG. 4 is a perspective view showing an exhaust duct.

FIG. 5 is a side view showing a vehicle cooling device arranged in an engine room.

FIG. 6 is a side view showing a vehicle cooling device arranged in an engine room.

FIG. 7 is a cross-sectional view showing a vehicle cooling device of a second embodiment.

FIG. 8 is an exploded perspective view showing a conventional vehicle cooling device.

FIG. 9 is a side view showing the inside of an engine room in which a conventional vehicle cooling device is arranged.

FIG. 10 is a side view showing the inside of an engine room in which another conventional vehicle cooling device is arranged.

[Explanation of symbols]

 33 engine room 45 engine 71, 147 vehicle cooling device 73 radiator part 75 condenser part 77 motor 79 radiator part side air introduction part 81 condenser part side air introduction part 83, 149 cooling device body 91 radiator body 93 radiator part side refrigerant cooling Fan 111 Condenser body 113 Fan for cooling the condenser side refrigerant

Claims (1)

[Scope of utility model registration request] 1. A radiator portion in which a fan for cooling the refrigerant is provided inside a cylindrical radiator body into which a refrigerant for cooling an engine is introduced, and a refrigerant for air conditioning arranged coaxially with the radiator portion. A condenser part in which the fan for cooling the refrigerant is provided inside the introduced capacitor body, and a drive shaft provided between both sides of the radiator part and the condenser part for cooling the refrigerant in the radiator part. A driving unit that rotationally drives the fan and the refrigerant cooling fan of the condenser unit, and an air introduction unit that supplies air to the refrigerant cooling fan of the radiator unit and the refrigerant cooling fan of the condenser unit are integrally formed. The cooling device body for a vehicle is arranged in the engine room of the vehicle along a direction intersecting the vehicle front-rear direction. Rejection device