JP2016117412A - Cooling system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling system enabling concurrent cooling of both ventilation systems that are a first passage, which uses a blower mechanism such as a cooling fan to perform the cooling and has high ventilation resistance, and a second passage, which uses travel wind of a vehicle to perform the cooling and has low ventilation resistance.SOLUTION: A cooling system 1 has: a blower mechanism 5; an air passage opening/closing mechanism 7 which is opened or closed by airflow; a first passage 9 in which the blower mechanism 5 is disposed; a second passage 11 in which the air passage opening/closing mechanism 7 is disposed; and a partition member 13 which limits airflow between the first passage 9 and the second passage 11.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cooling system, and relates to an apparatus provided with a blower mechanism such as a cooling fan and an air flow path opening / closing mechanism such as a flapper.

  Conventionally, a cooling system 301 as shown in FIGS. 5 and 6 is known (see, for example, Patent Document 1).

  The cooling system 301 is mounted on a vehicle 303 and includes a first passage 307 in which a cooling fan 305 is provided and a second passage 311 in which a flapper 309 is provided. A capacitor 313 is provided in the first passage 307, and a shutter 315 is provided in the second passage 311. The radiator 317 is provided in the first passage 307 and the second passage 311.

JP 20062631 A

  By the way, in the cooling system 301, a first passage 307 having a high ventilation resistance for cooling using the cooling fan 305, and a second passage 311 having a low ventilation resistance for cooling using the traveling wind of the vehicle 303, There is a problem in that it is sometimes impossible to perform cooling of both of the ventilation systems at the same time.

  For example, in the cooling system 301, when traveling wind is generated and the cooling fan 305 is superior to the traveling wind in a state where the cooling fan 305 is operating, the suction of air by the cooling fan 305 causes the Negative pressure is generated in the area A1 shown. As a result, the flapper 309 does not open and the traveling wind cannot be used efficiently.

  Further, in the conventional cooling system 301, when the cooling fan 305 is defeated by the traveling wind, the cooling fan 305 becomes a resistance, and a positive pressure is generated in the region A2 shown in FIG. As a result, the flapper 309 is opened, but the cooling fan 305 itself becomes a resistance, the amount of air passing through the cooling fan 305 is reduced, and the traveling wind cannot be used efficiently.

  The present invention has been made in view of the above problems, and performs cooling by using a first passage having high ventilation resistance for cooling using a blower mechanism such as a cooling fan, and traveling wind of a vehicle. It is an object of the present invention to provide a cooling system that can perform cooling of both ventilation systems with the second passage having low ventilation resistance.

  The invention according to claim 1 is provided with a blower mechanism, an air flow path opening / closing mechanism that opens and closes by an air flow, a first passage in which the blower mechanism is disposed, and the air flow path open / close mechanism. And a partition member that restricts the flow of air between the first passage and the second passage.

  According to the present invention, it is possible to provide a cooling system capable of performing both cooling using a blowing mechanism such as a cooling fan and cooling using a traveling wind of a vehicle. There is an effect that can be done.

It is a figure which shows schematic structure of the cooling system which concerns on embodiment of this invention, (b) is IB arrow line view in (a). It is a figure which shows operation | movement of the cooling system which concerns on embodiment of this invention. It is a figure which shows operation | movement of the cooling system which concerns on embodiment of this invention. It is a figure which shows operation | movement of the cooling system which concerns on embodiment of this invention. It is a figure which shows the conventional cooling system. It is a figure which shows the conventional cooling system.

  As shown in FIG. 1 and the like, the cooling system 1 according to the embodiment of the present invention is used for cooling, for example, a prime mover (engine; not shown) mounted on the vehicle 3, and a blower mechanism. A (cooling fan) 5, an air flow path opening / closing mechanism (flapper) 7, a first passage 9, a second passage 11, and a partition member (for example, a partition plate) 13 are configured. The cooling fan 5, the flapper 7, the first passage 9, the second passage 11, and the partition plate 13 are provided in the vehicle 3 in front of the vehicle 3.

  A cooling fan 5 is disposed in the first passage 9. A flapper 7 is disposed in the second passage 11. The flapper 7 is opened and closed by an air flow (for example, traveling wind of the vehicle 3).

  The flapper 7 is urged by an elastic body such as a spring when the traveling wind of the vehicle 3 is not received or the strength (for example, wind speed) of the traveling wind is smaller than a first predetermined value. The passage 11 is closed. Further, when the strength of the traveling wind becomes larger than the first predetermined value, the second passage 11 starts to open, and the opening degree of the second passage 11 increases as the strength of the traveling wind increases. Is supposed to increase. In addition, the second passage 11 is fully opened when the strength of the traveling wind is equal to or greater than a second predetermined value that is greater than the first predetermined value.

  The partition plate 13 is provided to restrict or eliminate the flow of air between the first passage 9 and the second passage 11 (air flow in the mutual direction). That is, the flow of air from the first passage 9 to the second passage 11 and the flow of air from the second passage 11 to the first passage 9 are eliminated or slightly reduced by the blockage at the partition plate 13. It is supposed to be.

  The cooling system 1 also includes a rectangular cylindrical duct 15. The duct 15 is provided integrally with the vehicle 3 such that one opening 17 is located on the front side and the other opening 19 is located on the rear side. The cooling fan 5, the flapper 7, and the partition member 13 are provided inside the duct 15, and the first passage 9 and the second passage 11 are formed inside the duct 15. The air in the duct 15 flows from the front side toward the rear side.

  In addition, the cooling system 1 includes a first heat exchanger (for example, an air conditioner condenser) 21, a second heat exchanger (for example, an engine radiator) 23, a shutter 25, and a control unit (CPU and memory). Control unit) 27.

  The capacitor 21 is disposed at a position corresponding to the first passage 9 (on the first passage 9 side). The radiator 23 is disposed so as to straddle both the first passage 9 and the second passage 11. The shutter 25 is disposed at a position corresponding to the second passage 11 (on the second passage 11 side), and adjusts the air flow.

  The shutter 25 is disposed below the capacitor 21 and is driven by an actuator (not shown) to open and close the second passage 11. Furthermore, the shutter 25 can not only fully close or fully open the second passage 11, but also can be in an arbitrary open state.

  A first passage 9 is formed in the upper portion inside the duct 15, and a second passage 11 is formed in the remaining portion inside the duct 15. The capacitor 21 is provided so as to close the first passage 9 on the front side inside the duct 15, and the shutter 25 is provided so as to close the second passage 11 on the front side inside the duct 15. Yes. That is, the capacitor 21 and the shutter 25 are aligned in the vertical direction, and are provided in parallel when viewed from the air flow direction (front-rear direction).

  Note that air flows through the condenser 21, but air does not flow through the shutter 25 when the shutter 25 is closed, and air flows through the shutter 25 when the shutter 25 is open. ing.

  The radiator 23 is provided on the rear side of the duct 15 so as to be separated from the capacitor 21 and the shutter 25 and to block the first passage 9 and the second passage 11. That is, the radiator 23, the condenser 21, and the shutter 25 are aligned in the front-rear direction, and are provided in series when viewed from the air flow direction (front-rear direction). In the same manner as the condenser 21, air flows through the radiator 23.

  The partition plate 13 is formed in a flat plate shape, and extends rearward from the radiator 23 in the duct 15 so that the thickness direction is in the vertical direction, and the first passage 9 and the second passage 11 Partitioning.

  The cooling fan 5 is provided in the first passage 9 so as to be separated from the radiator 23 behind the radiator 23 and to block the first passage 9 partitioned by the partition plate 13.

  In addition, when the cooling fan 5 is operating, the cooling fan 5 sucks air from the front side and discharges it to the rear side. Even when the cooling fan 5 is stopped, the traveling wind can pass through the cooling fan 5.

  The flapper 7 is provided in the second passage 11 so as to be separated from the radiator 23 behind the radiator 23 and close the second passage 11 partitioned by the partition plate 13.

  The control unit 27 controls the opening degree of the shutter 25.

  The control unit 27 is configured to adjust the opening of the shutter 25 according to at least one of the state of the capacitor 21 (for example, the pressure of the refrigerant), for example, the state of the radiator 23 (for example, the temperature of the cooling water). Has been.

  The cooling system 1 detects an engine cooling water temperature detection sensor that detects the temperature of the engine cooling water (for example, the temperature of the engine cooling water at the cooling water inlet of the radiator 21), and the refrigerant pressure at the refrigerant inlet of the condenser 21. A refrigerant pressure detection sensor is provided. The temperature and pressure detected by these detection sensors are sent to the control unit 27. And the control part 27 controls the opening degree of the shutter 25, for example using the temperature detected with the engine-cooling-water temperature sensor, and the pressure detected with the refrigerant | coolant pressure detection sensor.

  Here, the operation of the cooling system 1 will be described. The cooling system 1 operates as shown in FIG. 4 under the control of the control unit 27. It is assumed that the cooling fan 5 is operating.

  When the air flow is strong (for example, the vehicle 3 is traveling at a high speed with the flapper 7 opened) and the radiator 23 needs to be cooled (the temperature detected by the engine coolant temperature detection sensor is predetermined). Regardless of the state of the capacitor 21, the shutter 25 is opened (the opening degree of the shutter 25 is increased) or fully opened (refer to the cell A in the tables of FIGS. 2 and 4). .

  Further, the control unit 27 has a strong air flow and does not require the cooling of the radiator 23 (when the temperature detected by the engine coolant temperature detection sensor is lower than a predetermined threshold value), regardless of the state of the capacitor 21. The shutter 25 is closed (the opening degree of the shutter 25 is reduced) or fully closed (see the cell B in the tables of FIGS. 3 and 4).

  Further, the control unit 27 has a low air flow (the vehicle 3 is in an idle state or the vehicle 3 is traveling at a low speed), and the condenser 21 needs to be cooled (the pressure detected by the refrigerant pressure detection sensor is predetermined). The shutter 25 is closed or fully closed regardless of the state of the radiator 23 (see cell C in the table of FIG. 4).

  Further, the control unit 27 does not need to cool the condenser 21 because the air flow is weak (the pressure detected by the refrigerant pressure detection sensor is lower than a predetermined threshold value), and when the radiator 23 requires cooling, the shutter 25 Or fully open (see cell D in the table of FIG. 4).

  Further, when the airflow is weak, the condenser 21 does not need to be cooled, and the radiator 23 does not need to be cooled, the control unit 27 can change the opening of the shutter 25. Maintain (see cell E in the table of FIG. 4).

  According to the cooling system 1, the partition plate 13 that restricts the flow of air between the first passage 9 in which the cooling fan 5 is disposed and the second passage 11 in which the flapper 7 is disposed is provided. Thus, the interference between the air flow in the first passage 9 and the air flow in the second passage 11 can be eliminated depending on the operating conditions of the cooling fan 5 and the flapper 7. Then, a first passage 9 having a high ventilation resistance that cools using the cooling fan 5 (a ventilation system having a high ventilation resistance) and a second passage having a low ventilation resistance that uses the traveling wind of the vehicle 3 to perform cooling. The cooling of both the ventilation systems with the passage 11 (the ventilation system having a low ventilation resistance) can be performed at the same time.

  That is, in the conventional cooling system 301, as shown in FIG. 5, traveling wind is generated when the vehicle 303 is traveling at a high speed, and the cooling fan 305 is operated while the cooling fan 305 is operating. If it is better than that, a negative pressure region A1 is generated between the radiator 317 and the cooling fan 305 and the flapper 309 (the space between the radiator 307 and the cooling fan 305 and the flapper 309 is lower than the atmospheric pressure). Pressure). As a result, the flapper 309 does not open and the traveling wind cannot be used efficiently.

  Further, in the conventional cooling system 301, as shown in FIG. 6, traveling wind is generated by the vehicle 303 traveling at a high speed, and the cooling fan 305 is operated while the cooling fan 305 is operating. If this is lost, a positive pressure region A2 is generated between the radiator 3017 and the cooling fan 305 and the flapper 309 (the space between the radiator 317 and the cooling fan 305 and the flapper 309 is set to a pressure higher than atmospheric pressure). Become). As a result, the flapper 309 opens, but the cooling fan 305 itself becomes a resistance, the amount of air passing through the cooling fan 305 is reduced (see the broken arrow), and traveling wind cannot be used efficiently.

  That is, in the conventional cooling system 301, the first passage 307 (the ventilation system in which the ventilation resistance is increased by providing the capacitor 313) and the ventilation resistance that performs cooling using the traveling wind of the vehicle 303. It is difficult to perform cooling in both the ventilation system and the second low-pass passage 311 (the ventilation system in which the ventilation resistance is low because the capacitor 313 is not provided).

  On the other hand, in the cooling system 1, since the air in the first passage 9 and the second passage 11 is blocked from each other by the partition plate 13, the traveling wind is generated by the vehicle 3 traveling at a high speed. Even when the cooling fan 5 is operating, no negative pressure is generated between the radiator 23 and the cooling fan 5 and the flapper 7 in the second passage 11. The pressures in the region A3 and the region A5 shown are values independent of each other, and the flapper 7 provided in the second passage 11 is opened.

  Thus, the traveling wind can sufficiently pass through the second passage 11 and the traveling wind can be used efficiently (arrow AR1 in FIG. 2). Even if the ventilation resistance in the first passage 9 is high (even if the ventilation resistance of the cooling fan 5 is high), the cooling fan 5 can sufficiently draw in air (arrow AR2 in FIG. 2).

  The capacitor 21 installed in the first passage 9 can be sufficiently cooled, and the radiator 23 provided across the first passage 9 and the second passage 11 is sufficiently cooled. can do.

  Further, since the air in the first passage 9 and the second passage 11 is blocked from each other by the partition plate 13, traveling wind is generated when the vehicle 3 travels at a high speed, and the cooling fan 5 2 is in operation, air is drawn in as shown by an arrow AR3 in FIG. 2, and a portion of the low-temperature air that is not affected by the condenser 21 is used to provide the radiator 23 on the first passage 9 side. The part can be cooled.

  Further, according to the cooling system 1, since the shutter 25 for adjusting the air flow is disposed at a position corresponding to the second passage 11, the cooling fan 5 is operated during idling so that the shutter 25 is closed. Thus, the amount of air passing through the condenser 21 can be increased, and the condenser 21 can be sufficiently cooled. Even if the shutter 25 is closed, the radiator 23 can be sufficiently cooled because the heat radiation from the engine of the vehicle 3 in the idle state is small.

  Moreover, according to the cooling system 1, since the 2nd channel | path 11 is provided under the 1st channel | path 9 in which the capacitor | condenser 21 is provided, the heat | fever of the capacitor | condenser 21 is made into the 2nd channel | path 11 side by convection. The flow is prevented, and the radiator 23 can be efficiently cooled by the air passing through the second passage 11.

  Further, the cooling system 1 is configured to adjust the opening degree of the shutter 25 according to at least one of the state of the condenser 21 and the state of the radiator 23 under the control of the control unit 27. Capacitor 21 and radiator 23 can be efficiently cooled by an operation without waste.

  Further, according to the cooling system 1, when the airflow (traveling wind) is strong and the radiator 23 needs to be cooled, the shutter 25 is opened or fully opened under the control of the control unit 27. The second passage 11 flows almost as it is, and the radiator 23 can be efficiently cooled.

  Further, according to the cooling system 1, when the air flow is strong and the cooling of the radiator 23 is unnecessary, the shutter 25 is closed or fully closed under the control of the control unit 27. The air resistance coefficient can be reduced.

  Further, according to the cooling system 1, when the air flow is weak and the condenser 21 needs to be cooled, the shutter 25 is closed or fully closed under the control of the control unit 27. All of the generated air flow flows through the first passage 9, and the condenser 21 can be efficiently cooled.

  Further, according to the cooling system 1, when the air flow is weak and the condenser 21 does not need to be cooled and the radiator 23 needs to be cooled, the shutter 25 is opened or fully opened under the control of the control unit 27. As a result, the air flow generated by the cooling fan 3 flows to the radiator 23 without passing through the condenser 21, and the radiator 23 can be efficiently cooled.

  The cooling system 1 is a cooling system for an engine mounted on a vehicle, and a condenser, a part of a radiator, and a cooling fan are arranged in series in this order in the air flow direction from front to back. A first passage and a second passage in which a remaining portion of the radiator is disposed, and at least a part of a boundary between the first passage and the second passage is partitioned by a partition member. It is an example of a cooling system.

1 Cooling system 5 Blower mechanism (cooling fan)
7 Air channel opening / closing mechanism (Flapper)
9 First passage 11 Second passage 13 Partition member (partition plate)
21 First heat exchanger (condenser)
23 Second heat exchanger (radiator)
25 Shutter 27 Control unit

Claims (7)

A blower mechanism;
An air channel opening and closing mechanism that opens and closes by an air flow;
A first passage in which the air blowing mechanism is disposed;
A second passage in which the air flow path opening / closing mechanism is disposed;
A partition member for restricting the flow of air between the first passage and the second passage;
A cooling system comprising: The cooling system of claim 1, wherein
A first heat exchanger disposed at a position corresponding to the first passage;
A second heat exchanger disposed to span both the first passage and the second passage;
A cooling system comprising: The cooling system according to claim 1 or 2,
A cooling system, comprising a shutter that is disposed at a position corresponding to the second passage and adjusts an air flow. The cooling system according to claim 3.
The cooling system according to claim 1, wherein the shutter is disposed below the first heat exchanger. The cooling system according to claim 3 or claim 4,
A control unit for controlling the shutter;
The control unit is configured to adjust the opening of the shutter according to at least one of a state of the first heat exchanger and a state of the second heat exchanger. Cooling system. The cooling system according to claim 5, wherein
When the air flow is strong and the second heat exchanger needs cooling, the control unit increases or fully opens the shutter.
In addition, when the air flow is strong and cooling of the second heat exchanger is unnecessary, the control unit reduces the opening of the shutter or fully closes it,
In addition, when the air flow is weak and the first heat exchanger needs to be cooled, the control unit reduces or fully closes the opening of the shutter.
In addition, the control unit may increase the opening of the shutter when the air flow is weak, the first heat exchanger does not need to be cooled, and the second heat exchanger needs to be cooled. Or the cooling system characterized by being comprised so that it may open fully. An engine cooling system mounted on a vehicle,
A first passage in which a condenser, a part of the radiator, and a cooling fan are arranged in series; and a second passage in which the remaining portion of the radiator is arranged, the first passage And at least a part of the boundary between the second passage and the second passage is partitioned by a partition member.

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