JP2014034323A - Cooling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling device that can effectively cool two adjacent heat exchangers according to respective cooling requirements of the heat exchangers and reduce consumption power.SOLUTION: A cooling device 1 comprises: two heat exchangers; a fan shroud 4; two blowers 5 and 6; an ECU 10 for individually controlling the two blowers 5 and 6. A radiator 2 and a capacitor 3 are adjacently and vertically arranged so that heat-exchanging core portions at which fluid flowing inside and air passing outside exchange heat are not superposed in front/rear direction. The first blower 5 and the second blower 6 transversely arranged are shifted vertically to be arranged so that one upper end 5a is positioned higher than the other upper end 6a. In the fan shroud 4 is provided a partition wall 40 for dividing an area, on which air between the two heat exchangers and the blowers passes, into upper and lower areas to form passages 50 and 60 respectively corresponding to the two blowers 5 and 6.

Description

  The present invention relates to a cooling device that provides cooling air to two adjacent heat exchangers.

  In Patent Document 1, two axial fans arranged side by side, a fan shroud that guides cooling air generated by the fans to pass through the vehicle heat exchanger, an electric motor that drives the fans, A cooling device is disclosed. In the fan shroud, a partition portion is formed between the two fans. When two fans are operated, the air that has passed through the two vehicle heat exchangers arranged so as to overlap the front of the fans is sucked into each fan, and then passed through the two passages partitioned by the partition section. Flows that flow down and do not interfere with each other. The cooling device of Patent Document 1 provides cooling air that operates two fans and passes through the vehicle heat exchanger when there is a cooling request for the vehicle heat exchanger. Cool the fluid flowing through.

JP-A-10-252470

  When cooling two heat exchangers arranged adjacent to each other in the vertical direction by the cooling fan device disclosed in Patent Document 1, it is effective for two heat exchangers having different cooling request timings. There is a problem that it is difficult to perform proper cooling. For example, if a cooling fan is operated in a situation where one of the two heat exchangers requires cooling and the other does not require cooling, a lot of cooling air flows through the heat exchanger that does not require cooling. The cooling fan does extra work for the cooling effect of the heat exchanger and consumes wasted power.

  Therefore, the present invention has been made in view of the above problems, and cooling that can effectively cool the two adjacent heat exchangers according to the cooling requirements of each heat exchanger and reduce power consumption. An object is to provide an apparatus.

The present invention employs the following technical means to achieve the above object. In the invention relating to the cooling device of the present application, two heat exchanger core parts (20, 30) that exchange heat between the fluid flowing inside and the air passing outside are arranged adjacent to each other vertically. The fan shroud (4) is provided in front of or behind the heat exchanger so as to cover both the heat exchanger (2, 3) and the heat exchange core part, and guides air passing outside the heat exchange core part. ), Two air blowers (5, 6) that are attached to the fan shroud so as to be lined up side by side and generate air guided by the fan shroud, and a control device that individually operates the two air blowers ( 10)
The two air blowers are provided so as to be shifted up and down so that one upper end portion (5a) is located above the other upper end portion (6a), and the fan shroud includes a heat exchanger and a blower device. The partition wall (40) which divides | segments the space where the air in between passes up and down and forms each channel | path (50, 60) corresponding to each of two air blowers is provided, It is characterized by the above-mentioned. .

  According to the present invention, air is passed through the upper heat exchanger by the one blower device located above, and air is passed through the lower heat exchanger by the other blower device located below. And the air provided by each air blower flows through the channel | path divided | segmented up and down by the partition wall, respectively. Thereby, the air for cooling can be provided to each heat exchanger when necessary by individually controlling the operation of the two air blowers, and the air blower can be efficiently operated. . Therefore, it is possible to provide a cooling device that can effectively cool the two adjacent heat exchangers according to the cooling requirement of each heat exchanger and can reduce power consumption.

  Note that the reference numerals in parentheses described in the claims and the above-described means are examples of a correspondence relationship with the specific means described in the embodiments described later as one aspect, and are technical terms of the present invention. It does not limit the range.

It is a rear view which shows the structure about the cooling device of 1st Embodiment to which this invention is applied. It is typical sectional drawing at the time of seeing the II-II cross section in FIG. It is a chart for demonstrating the operation mode of the air blower with respect to the cooling request | requirement of a heat exchanger. It is a rear view which shows the structure about the cooling device of 2nd Embodiment to which this invention is applied. It is a rear view which shows the structure about the cooling device of 3rd Embodiment to which this invention is applied. It is a rear view which shows the structure about the cooling device of 4th Embodiment to which this invention is applied. It is a rear view which shows the structure about the cooling device of 5th Embodiment to which this invention is applied.

  A plurality of modes for carrying out the present invention will be described below with reference to the drawings. In each embodiment, parts corresponding to the matters described in the preceding embodiment may be denoted by the same reference numerals, and redundant description may be omitted. When only a part of the configuration is described in each mode, the other modes described above can be applied to the other parts of the configuration. Not only combinations of parts that clearly show that combinations are possible in each embodiment, but also combinations of the embodiments even if they are not explicitly stated unless there is a problem with the combination. Is also possible.

(First embodiment)
1st Embodiment which is one Embodiment of this invention is described using FIGS. 1-3. In FIG. 1, for convenience, a radiator 7 for cooling the cooling water circulating through the engine is not shown. The cooling device 1 included in the present invention provides air passing through the heat exchange core portion to two heat exchangers disposed adjacent to each other in the vertical direction so that the heat exchange core portion does not overlap in the front-rear direction. be able to. And the channel | path corresponding to each air blower is each provided in the space formed between the heat exchanger and the air blower by the fan shroud 4 of the cooling device 1.

  As shown in FIGS. 1 and 2, the fan shroud 4 is a member that supports the first blower 5 and the second blower 6 that provide cooling air to at least two heat exchangers. The fan shroud 4 is provided in front of or behind the heat exchanger so as to cover both of the heat exchange core portions of the heat exchanger, and guides air passing outside the heat exchange core portion. The fan shroud 4 is made of, for example, a polypropylene resin whose strength is increased by glass fiber or talc material. In the two heat exchangers, a fluid flows inside a plurality of tubes constituting each heat exchange core, and the fluid and air flowing around each tube exchange heat to cool the fluid. Is possible.

  An inverter cooling condenser, an air conditioning condenser, or the like can be applied to the upper heat exchanger located above and the lower heat exchanger located lower than the upper heat exchanger. In the first embodiment, the upper heat exchanger is the radiator 2, and the lower heat exchanger is the condenser 3. The radiator 2 is provided in a circuit in which a working fluid for cooling the inverter circulates, and the working fluid radiates heat to the air in the radiator 2 and then cools, and then flows toward the inverter. The condenser 3 is a heat exchanger in which the refrigerant circulating in the refrigeration cycle for air conditioning condenses inside and dissipates heat.

  The radiator 2 has a heat exchange core portion 20 composed of a plurality of tubes and fins between the tubes arranged in such a manner that the cooling water of the inverter flows therein and the longitudinal direction faces the lateral direction. It has an inlet tank and an outlet tank to which the sections are connected. The condenser 3 has a heat exchange core portion 30 composed of a plurality of tubes and fins between the tubes arranged in such a manner that the refrigerant flows inside and the longitudinal direction is oriented in the lateral direction, and both ends in the longitudinal direction of the tubes are connected. The inlet tank and the outlet tank are configured.

  Further, a radiator 7 for cooling the engine may be provided between the radiator 2 and the condenser 3 and the fan shroud 4. In this case, the radiator 2 is provided in front of and above the radiator 7 and the condenser 3 is provided in front of the radiator 7 and below the radiator 2.

  The fan shroud 4 has a horizontally long rectangular shape, and two axial-flow blowers 5 and 6 that allow cooling air to pass through the heat exchange core portions of the radiator 2, the condenser 3, and the radiator 7 are arranged side by side. It has a configuration that can be arranged. The fan shroud 4 includes motor mounting portions to which the motors of the blower devices 5 and 6 are mounted, motor fixing leg portions extending radially from the motor mounting portions, and rotations of the blower devices 5 and 6. A circular shape that surrounds the outer periphery of a plurality of blades formed radially extending from the shaft, and is formed integrally with the radial end of the motor fixing leg, and the motor mounting part is connected to the motor fixing leg through the motor fixing leg. Each ring-shaped part to support.

  The blowers 5 and 6 are disposed downstream of the radiator 2, the condenser 3, and the radiator 7 with respect to the flow direction of the cooling air, and a motor having a rotation shaft arranged in the front-rear direction of the vehicle is driven to rotate. Outside air is sucked from the grill side on the front of the vehicle toward the rear of the vehicle. Each motor of the 1st air blower 5 and the 2nd air blower 6 is an electric type, for example, comprises a ferrite type direct current motor. A harness part for supplying electric power to the armature is connected to the motor, and the harness part is connected to a vehicle battery via a connector or the like.

  The first blower 5 is disposed on the left side when viewed from the back (from the rear) of the cooling device 1, and the second blower 6 is disposed on the right side. Among the air blowers arranged side by side, the first air blower 5 is located above the second air blower 6 in the fan shroud 4 and is attached to the fan shroud 4. That is, the two air blowers are provided so as to be shifted up and down so that the upper end portion 5a of one first air blower device 5 is positioned above the upper end portion 6a of the other second air blower device 6. Here, the upper end portion 5a and the upper end portion 6a are the uppermost positions where air is sucked in and blown out in the blower. For example, when the air blower includes a propeller fan, the upper end portion of the air blower is a portion at the highest position in an orifice having a shape surrounding the propeller fan.

  Each of the first blower 5 and the second blower 6 generates air guided by the fan shroud 4. The fan shroud 4 is provided with a partition wall 40 that divides the space through which the air passes between the two heat exchangers 2 and 3 and the two blowers 5 and 6 into upper and lower parts. The partition wall 40 has a lower partition 43 that extends in the horizontal direction on the first blower 5 side, an upper partition 41 that extends in the horizontal direction on the second blower 6, and a horizontal central portion of the fan shroud 4. And an intermediate partition portion 42 extending in the direction.

  The lower partition part 43 is arranged so as to have a height equal to or lower than the lower peripheral edge part 5b in one of the first blower devices 5 located above. That is, the lower partition 43 is provided at a position equivalent to or lower than the lower peripheral edge 5b of the first blower 5. The upper partition 41 is arranged to be higher than the upper peripheral edge including the upper end 6 a of the other second blower 6. That is, the upper partition 41 is provided at a position equivalent to or above the upper peripheral edge of the second blower 6. Further, the upper partition portion 41 is arranged so as to have a height not more than the lower end portion 2 a of the radiator 2 and not less than the upper end portion 3 a of the capacitor 3. The intermediate partition 42 has a shape extending in the vertical direction between the first blower 5 and the second blower 6, and communicates the lower partition 43 and the upper partition 41.

  The lower peripheral edge 5b of the first blower 5 is a portion that extends over the lower half of the periphery of the portion where air is sucked or blown in the first blower 5. For example, when the air blower includes a propeller fan, the lower peripheral edge 5b of the first air blower 5 is a peripheral portion that extends over the lower half of the orifice surrounding the propeller fan. The upper peripheral edge of the second blower 6 is a portion that extends over the upper half at the periphery of the portion that sucks or blows air in the second blower 6. For example, when the air blower includes a propeller fan, the upper peripheral edge of the second air blower 6 is a peripheral portion that extends over the upper half of the orifice that surrounds the propeller fan.

  The partition wall 40 forms a first ventilation path 50 and a second ventilation path 60 corresponding to the first blower 5 and the second blower 6, respectively. That is, the partition wall 40 divides the space formed between the radiator 2 and the condenser 3 and the first air blower 5 and the second air blower 6 into upper and lower parts, and the entire rear surface of the upper radiator 2. And a second ventilation passage 60 facing a part of the rear surface of the lower capacitor 3 are formed.

  The cooling device 1 includes a control device 10 capable of operating the first blower 5 and the second blower 6 individually. When there is a cooling request for cooling the fluid flowing through the radiator 2 positioned above, the control device 10 operates at least the first blower 5. At this time, since the air in the first ventilation passage 50 is sucked by the first blower 5, the air flow passing through the heat exchange core portion 20 of the portion facing the first ventilation passage 50 in the radiator 2 and the condenser 3 An air flow that passes through the portion of the heat exchange core 30 that faces the first ventilation passage 50 is formed. That is, air passes through the entire heat exchange core part 20, and on the left side (first air blower 5 side) of the heat exchange core part 30, air passes through a portion above the lower partition part 43. . Therefore, the fluid in the entire radiator 2 and the refrigerant existing in the portion on the upper left half of the condenser 3 are cooled by the passing air. The cooling request of the radiator 2 can be generated according to, for example, the temperature of the working fluid.

  When there is a cooling request for cooling the refrigerant (working fluid) flowing through the condenser 3 located below, the control device 10 operates at least the second blower 6. At this time, since the air in the second ventilation passage 60 is sucked by the second blower 6, an air flow that passes through the heat exchange core portion 30 of the portion facing the second ventilation passage 60 in the condenser 3 is formed. That is, on the right side (second air blower 6 side) of the heat exchange core part 30, air passes through the part below the upper partition part 41 and the intermediate partition part 42, and the left side (first side) of the heat exchange core part 30. In the blower 5 side), air passes through a portion below the lower partition 43. Therefore, the refrigerant present in the portion of the capacitor 3 is cooled by the passing air. The cooling request | requirement of the capacitor | condenser 3 can generate | occur | produce, for example according to the preset temperature of an auto air conditioner, and the operation command by manual operation.

  Hereinafter, in the cooling device 1 having the above-described configuration, the first blower 5 and the second blower 6 respond to cooling requests related to the upper radiator 2 that is the first heat exchanger and the lower condenser 3 that is the second heat exchanger. The presence or absence of driving will be described with reference to FIG. As shown in FIG. 3, when there is a cooling request for only the upper radiator 2 (first heat exchanger), the control device 10 operates the first air blower 5 and does not operate the second air blower 6. . By the operation of only the first blower 5, an air flow that flows through the first ventilation passage 50 toward the rear of the vehicle is formed, and the air is the upper left of the heat exchange core unit 20 and the upper left side of the heat exchange core unit 30. Passing through the part, all of the radiator 2 requiring cooling and a part of the condenser 3 are cooled.

  Next, when there is a cooling request for only the lower condenser 3 (second heat exchanger), the control device 10 operates the second air blower 6 and does not operate the first air blower 5. By operating only the second blower 6, an air flow that circulates in the second ventilation passage 60 toward the rear of the vehicle is formed, and the air passes through the portion of the heat exchange core portion 30 except the upper left portion. Then, the part excluding the upper left part of the capacitor 3 that is required to be cooled is cooled. In the control for operating only the second blower 6, since the entire condenser 3 is not cooled, the weak cooling mode for the condenser 3 is set.

  Next, when there is a cooling request for only the lower condenser 3 (second heat exchanger) and when the strong cooling mode for strongly cooling the condenser 3 is performed, the control device 10 Both the 1 air blower 5 are drive | operated. By this operation, an air flow is formed that flows through the first ventilation passage 50 and the second ventilation passage 60 toward the rear of the vehicle, respectively, and the air passes through the entire heat exchange core portion 20 and the heat exchange core portion 30. Thus, not only all the condensers 3 that require cooling but also all the radiators 2 that do not require cooling are cooled. In this strong cooling mode, the cooling of the condenser 3 can be performed more rapidly than the effect of reducing the electric power consumption of the electric fan, the air conditioning capability can be increased rapidly, and the air conditioning can be prioritized.

  According to the first embodiment, the cooling device 1 includes two heat exchangers, a fan shroud 4, two air blowers 5 and 6, and an ECU 10 that individually operates the two air blowers 5 and 6. And comprising. The radiator 2 and the condenser 3 which are two heat exchangers are disposed adjacent to each other so that the heat exchange core portions 20 and 30 for exchanging heat between the fluid flowing inside and the air passing outside do not overlap each other. Is done. The first blower 5 and the second blower 6 are attached to the fan shroud 4 so as to be arranged side by side, and generate air guided by the fan shroud 4. The first blower 5 and the second blower 6 are provided so as to be shifted up and down so that one upper end 5a is positioned above the other upper end 6a. The partition wall 40 provided in the fan shroud 4 divides the region through which air passes between the two heat exchangers and the blowers 5 and 6 into two parts, and the first ventilation corresponding to the first blower 5. A passage 50 and a second ventilation passage 60 corresponding to the second blower 6 are formed.

  According to this configuration, when the first air blower 5 located above is operated, an air flow that flows through the first ventilation passage 50 formed by the partition wall 40 is generated, and the heat exchanger (radiator located above) 2) Ventilation can be performed. In addition, when the second air blower 6 located below is operated, an air flow that flows through the second air passage 60 formed by the partition wall 40 is generated, and the air flows to the heat exchanger (the condenser 3) located below. It can be performed. And the air for cooling can be provided to each of the heat exchanger which adjoins up and down as needed by controlling the operation | movement of the two air blowers arrange | positioned shifting up and down separately. For this reason, useless ventilation to the heat exchanger with low necessity of cooling can be controlled, and operation of an efficient air blower can be implemented on energy use. Therefore, the cooling device 1 can perform effective cooling according to the cooling request | requirement of each heat exchanger about the two heat exchangers adjacent up and down, and can aim at reduction of power consumption.

  Moreover, the partition wall 40 formed in the fan shroud 4 includes a lower partition portion 43 arranged at a height not more than the lower peripheral edge portion 5 b of the first blower device 5 and an upper peripheral edge portion of the second blower device 6. An upper partition 41 disposed at a height of the first partition, an intermediate partition 42 disposed between the first blower 5 and the second blower 6, and connecting the lower partition 43 and the upper partition 41, It is configured with.

  According to this configuration, by providing the partition wall 40 having the above three portions, the space formed between the fan shroud 4 and the front heat exchanger can be reduced to the first without using a complicated configuration. It can be divided into a passage where an air flow is generated by the blower 5 and a passage where an air flow is generated by the second blower 6.

  When there is a cooling request for only the upper radiator 2 among the two heat exchangers adjacent to each other in the vertical direction, the control device 10 operates only the first blower device 5 located above. According to this control, by providing at least cooling air to the upper radiator 2 having a cooling request, provision of cooling air to the lower heat exchanger without the cooling request can be reduced. For this reason, the driving | operation of the 2nd air blower 6 which provides the cooling wind to the heat exchanger without a cooling request | requirement can be reduced, and the motive power for driving an air blower as the whole cooling device can be labor-saving. Therefore, it is possible to obtain a cooling device that can intensively and efficiently cool the radiator 2 that has a high necessity for cooling in order to ensure the cooling capacity of the inverter, and reduce power consumption and the like.

  When there is a cooling request for only the lower condenser 3 among the two heat exchangers adjacent to each other in the vertical direction, the control apparatus 10 operates only the second blower apparatus 6 located below. According to this control, by providing at least the cooling air to the lower condenser 3 having a cooling request, provision of the cooling air to the upper heat exchanger having no cooling request can be reduced. For this reason, the driving | operation of the 1st air blower 5 which provides the cooling air to the heat exchanger without a cooling request | requirement can be reduced, and the motive power for driving an air blower as the whole cooling device can be labor-saving. Therefore, it is possible to obtain a cooling device that can intensively and efficiently cool the condenser 3 that has a high necessity for cooling in order to ensure air-conditioning capacity and the like, and can reduce power consumption and the like.

(Second Embodiment)
In 2nd Embodiment, 1 A of cooling devices which are the other forms with respect to 1st Embodiment are demonstrated with reference to FIG. In 2nd Embodiment and FIG. 4, the component which attached | subjected the same code | symbol as drawing based on 1st Embodiment, and the structure which is not demonstrated are the same as that of 1st Embodiment, and there exists the same effect.

  As shown in FIG. 4, the cooling device 1A is different from the cooling device 1 in that the upper partition portion 41A of the partition wall 40A forms an arc-shaped portion along the upper peripheral edge 6Aa of the second blower device 6A. ing. Further, the upper peripheral edge 6 </ b> Aa of the second blower 6 </ b> A is located at a height above the lower end 2 a of the radiator 2. Therefore, the arc-shaped portion of the upper partition portion 41A is provided on the fan shroud 4A so as to have a height above the lower end portion 2a of the radiator 2.

  With such a configuration, the first ventilation passage 50A is located on the right rear side of the radiator 2 and above the second blower 6A, on the left rear side of the radiator 2, and on the left rear side of the condenser 3. And a left-side space formed in front of the first blower 5. The second ventilation passage 60A is formed in the left space part formed below the lower left side of the condenser 3 below the first blower 5, and in the right rear of the condenser 3 and in front of the second blower 6A. And a right space part. Since the upper peripheral edge 6Aa of the second blower 6A is at a higher position above the lower end 2a of the radiator 2, a part of the right space of the second ventilation passage 60A includes a region on the right rear side of the radiator 2. It will be.

  Moreover, in 2nd Embodiment, the upper end part 5a of the 1st air blower 5 and the upper side peripheral part 6Aa of 6 A of 2nd air blowers are not separated compared with the case of 1st Embodiment. Therefore, when there is a cooling request for both the radiator 2 and the condenser 3, both the heat exchangers are efficiently cooled as a whole by operating both the first blower 5 and the second blower 6A. be able to.

(Third embodiment)
In 3rd Embodiment, the cooling device 1B which is another form with respect to 2nd Embodiment is demonstrated with reference to FIG. In 3rd Embodiment and FIG. 5, the component which attached | subjected the same code | symbol as drawing based on 2nd Embodiment, and the structure which is not demonstrated are the same as that of 1st Embodiment, and there exists the same effect.

  As illustrated in FIG. 5, the cooling device 1B includes an upper partition portion 41B and a lower partition portion 43B in a form in which the intermediate partition portion 42B of the partition wall 40B is inclined with respect to the vertical direction with respect to the cooling device 1A. We are communicating slowly. The intermediate partition 42B extends so as to be in contact with both the upper peripheral edge 6Aa of the second blower 6A and the lower peripheral edge 5b of the first blower 5A. Therefore, the intermediate partition portion 42B is provided on the fan shroud 4B so as to partition the second air blower 6A and the first air blower 5A obliquely.

  With such a configuration, the first ventilation passage 50B is located on the right side of the radiator 2 and above the second air blower 6A, on the left side of the radiator 2, and on the left side of the condenser 3. And a left-side space formed in front of the first blower 5. The second ventilation passage 60B is formed at the left space behind the lower left side of the condenser 3 and below the first blower 5, and at the right rear of the condenser 3 and in front of the second blower 6A. And a right space part.

  Moreover, in 3rd Embodiment, the intermediate partition part 42B partitions the 1st ventilation path 50B and the 2nd ventilation path 60B diagonally between 6 A of 1st ventilation apparatuses and 5 A of 1st ventilation apparatuses. Therefore, the air flow sucked from the right space portion toward the left space portion in the first ventilation passage 50B becomes smooth, and the ventilation resistance of the air sucked into the first blower 5 through the right half of the radiator 2 Can be reduced. Further, the air flow sucked from the left space portion toward the right space portion in the second ventilation passage 60B becomes smooth, and the air sucked into the second blower 6A through the lower left portion of the condenser 3 is also ventilated. Resistance can be reduced.

(Fourth embodiment)
In the fourth embodiment, a cooling device 1 </ b> C that is another embodiment of the first embodiment will be described with reference to FIG. 6. In 4th Embodiment and FIG. 6, the component which attached | subjected the same code | symbol as drawing based on 1st Embodiment, and the structure which is not demonstrated are the same as that of 1st Embodiment, and there exists the same effect.

  As shown in FIG. 6, the cooling device 1 </ b> C has a configuration in which the upper partition portion 41 </ b> C of the partition wall 40 </ b> C is inclined with respect to the horizontal direction (the upper edge or the lower edge of the fan shroud 4 </ b> C). Is different. The upper partition portion 41C is also inclined and intersects with the lower end portion 2a of the radiator 2, its right end portion is located at a height above the lower end portion 2a, and its left end portion is lower than the lower end portion 2a. Is also located at a lower height.

  With such a configuration, the first ventilation passage 50 </ b> C is located on the right side of the radiator 2 and above the second blower 6, on the left side of the radiator 2 and on the left side of the condenser 3. And a left-side space formed in front of the first blower 5. The second ventilation passage 60 </ b> C is formed at the left lower space rearward of the condenser 3 and below the first blower 5, and at the right rear of the condenser 3 and in front of the second blower 6. And a right space part.

(Fifth embodiment)
In the fifth embodiment, a cooling device 1D that is another embodiment of the fourth embodiment will be described with reference to FIG. In 5th Embodiment and FIG. 7, the component which attached | subjected the same code | symbol as drawing based on 4th Embodiment, and the structure which is not demonstrated are the same as that of 1st Embodiment, and there exists the same effect.

  As illustrated in FIG. 7, the cooling device 1D includes an upper partition portion 41D and a lower partition portion 43D in a form in which the intermediate partition portion 42D of the partition wall 40D is inclined with respect to the vertical direction with respect to the cooling device 1C. We are communicating slowly. The intermediate partition 42D extends so as to contact both the upper peripheral edge of the second blower 6 and the lower peripheral edge 5b of the first blower 5. Therefore, the intermediate partition 42D is provided in the fan shroud 4D so as to partition the second blower 6 and the first blower 5 diagonally.

  With this configuration, the first ventilation passage 50 </ b> D is located on the right side of the radiator 2 and above the second blower 6, on the left side of the radiator 2 and on the left side of the condenser 3. And a left-side space formed in front of the first blower 5. The second ventilation passage 60 </ b> D is formed on the left space behind the lower left side of the condenser 3 and below the first blower 5, and on the right rear of the condenser 3 and in front of the second blower 6. And a right space part.

  Further, in the fifth embodiment, the intermediate partition portion 42D partitions the first ventilation passage 50D and the second ventilation passage 60D obliquely between the second blower 6 and the first blower 5. For this reason, in the first ventilation passage 50D, the air flow sucked from the right space portion toward the left space portion becomes smooth, and the ventilation resistance of the air sucked into the first blower 5 through the right half of the radiator 2 Can be reduced. Further, the air flow sucked from the left space portion toward the right space portion in the second ventilation passage 60D becomes smooth, and the air sucked into the second blower 6 through the lower left portion of the condenser 3 is also ventilated. Resistance can be reduced.

(Other embodiments)
The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. The structure of the said embodiment is an illustration to the last, Comprising: The scope of the present invention is not limited to the range of these description. The scope of the present invention is indicated by the description of the scope of claims, and further includes meanings equivalent to the description of the scope of claims and all modifications within the scope.

  In the above-described embodiment, the two adjacent heat exchangers are arranged in the vertical direction. However, in the state in which the cooling device is installed, the heat exchangers are not limited to the vertical direction, and may be arranged in a horizontal direction, for example. . In this case, the two air blowers are in a relationship of being aligned in the vertical direction or the like. That is, the scope of the present invention is the state before installing the cooling device, in other words, two heat exchangers arranged adjacent to each other as a cooling device alone, and two air blowers arranged side by side. In a state where the cooling device is installed in a vehicle body, a building or the like, the arrangement direction is not limited to the state described in the claims.

  In each of the above embodiments, the radiator 2 and the condenser 3 are employed as the heat exchangers arranged in two stages in the vertical direction. However, the two heat exchangers according to the present invention are not limited to this form, for example, oil An oil cooler that cools the engine, an intercooler that cools the intake air of the engine, and the like may be the cooling target.

  In the above embodiment, the mode in which the working fluid flows laterally in the radiator 2 and the condenser 3 is described, but the two heat exchangers according to the present invention are not limited to such a flow direction. .

  In each said embodiment, although the fan shroud and the partition wall are formed with the resin molded product, it is good also as metal. When it is made of metal, the fan shroud including the partition wall is created by press working or welding using a mold.

DESCRIPTION OF SYMBOLS 1 ... Cooling device 2 ... Radiator (upper heat exchanger)
3… Condenser (lower heat exchanger)
4 ... Fan shroud 5 ... First blower (blower)
5a, 6a ... upper end 6 ... second blower (blower)
DESCRIPTION OF SYMBOLS 10 ... Control apparatus 20, 30 ... Heat exchange core part 40 ... Partition wall 50 ... 1st ventilation path (passage)
60 ... Second ventilation passage (passage)

Claims (4)

Two heat exchangers (2, 3) arranged adjacent to each other so that the heat exchange core (20, 30) that exchanges heat between the fluid flowing inside and the air passing outside does not overlap in the front-rear direction When,
A fan shroud (4) that is provided in front of or behind the heat exchanger so as to cover both of the heat exchange core portions and guides air passing outside the heat exchange core portions;
Two air blowers (5, 6) attached to the fan shroud so as to be arranged side by side and generating the air guided by the fan shroud;
A control device (10) for individually operating the two blowers;
With
The two air blowers are provided so as to be shifted up and down so that one upper end (5a) is positioned above the other upper end (6a),
The fan shroud is partitioned so as to divide the space between the heat exchanger and the air blower into upper and lower parts, and the passages (50, 60) corresponding to the two air blowers, respectively. A cooling device characterized in that a partition wall (40) is formed.   The partition wall includes a lower partition portion (43) arranged to be equal to or lower than a lower peripheral edge portion (5b) in the one blower device (5) positioned above, and the other blower device ( 6) an upper partition (41) disposed to be higher than the upper peripheral edge (6a), and the lower partition and the upper partition disposed between the two blowers. The cooling device according to claim 1, comprising an intermediate partition portion (42) that communicates with each other.   When there is a cooling request for only the upper heat exchanger (2) of the two heat exchangers, the control device operates only the one air blower located above. The cooling device according to claim 1 or 2.   When there is a cooling request for only the lower heat exchanger (3) of the two heat exchangers, the control device operates only the other air blower located below. The cooling device according to any one of claims 1 to 3, wherein the cooling device is characterized.

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