JP2019065748A - Cooling liquid distribution device - Google Patents

Abstract

To provide a cooling liquid distribution device capable of connecting or shutting off three inlet channels and three outlet channels through connection channels.SOLUTION: A cooling liquid distribution device sending cooling liquid to a cooling object portion of an engine, has a first inlet channel 44, a second inlet channel 45, and a third inlet channel 46 which are disposed in parallel with each other; a first outlet channel 47, a second outlet channel 48, and a third outlet channel 49 which are disposed in parallel with each other; a valve body 59; and a first connection channel 68, a second connection channel 69, a third connection channel 70, a fourth connection channel 90, a fifth connection channel 91, and a sixth connection channel 92 which are provided on the valve body 59. When the valve body 59 is at a predetermined position, the first connection channel 68 and the first inlet channel 44 are shut off, the second connection channel 69 and the second inlet channel 45 are shut off, and the third connection channel 70 and the third inlet channel 46 are shut off. When a rotating direction of the valve body 59 based on the predetermined position is different, the connection and shut off patterns of the fifth connection channel 91 and the second outlet channel 48 are different.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a coolant distribution device that delivers coolant to a cooling target of an engine through a plurality of paths.

  Patent Document 1 describes an example of a coolant distribution device that sends coolant to a portion to be cooled of an engine through a plurality of paths. The coolant distribution device described in Patent Document 1 has a rotary valve device. The rotary valve device has a cylindrical rotary valve as a valve body, a housing for accommodating the rotary valve, and an electric motor for rotating the rotary valve. The housing has a plurality of openings as a plurality of connection channels. The rotary valve has a plurality of cutout holes as a plurality of inlet flow channels and a plurality of cutout holes as a plurality of outlet flow channels. Any one of the plurality of outlet flow paths is connected to the heater core. When the rotary valve is rotated by the electric motor, the plurality of openings and the plurality of notch holes are connected or disconnected.

JP, 2016-138454, A

  However, the coolant distribution device described in Patent Document 1 does not consider the point of connecting or blocking the three inlet flow paths and the three outlet flow paths via the connection flow path, and that point And there was room for improvement.

  An object of the present invention is to provide a coolant distribution device capable of connecting or blocking three inlet channels and three outlet channels via a connecting channel.

  The present invention is a cooling liquid distribution device for distributing a cooling liquid to a cooling target portion of an engine through a plurality of paths, which transports the cooling liquid from the cooling target portion, and is disposed in parallel to each other. Cooling transported from at least one of the first inlet channel, the second inlet channel and the third inlet channel, and the first inlet channel, the second inlet channel and the third inlet channel The liquid is returned to the portion to be cooled, and the first outlet channel, the second outlet channel, and the third outlet channel arranged in parallel to each other, and a valve element rotatably provided within a predetermined angle range A first connection flow path provided within the predetermined angle range with respect to the valve body and connected or blocked to the first inlet flow path by rotation of the valve body; and the valve body with respect to the valve body Provided within a predetermined angular range, and connected to the second inlet channel by rotation of the valve body or A second connection flow path to be disconnected, and a third connection flow path provided within the predetermined angle range with respect to the valve body and connected or blocked to the third inlet flow path by rotation of the valve body And a fourth connection flow path provided within a predetermined angle range of the rotational direction of the valve body and connected or blocked to the first outlet flow path by rotation of the valve body, and the valve body A fifth connection flow path provided within the predetermined angle range and connected or blocked to the second outlet flow path by rotation of the valve body, and provided within the predetermined angle range with respect to the valve body And a sixth connection channel connected or disconnected to the third outlet channel by rotation of the valve body, and the first connection channel, the second connection channel, and the third connection The flow path, the fourth connection flow path, the fifth connection flow path, and the sixth connection flow path are mutually connected. When the valve body is at a predetermined position within the predetermined angle range, the first connection flow path and the first inlet flow path are blocked, and the second connection flow path and the second inlet flow path And the third connection channel and the third inlet channel, and the fifth connection channel and the fifth connection channel are different from each other in the rotational direction of the valve body with respect to the predetermined position. The connection and blocking patterns with the second outlet channel are different.

  According to the present invention, it is possible to connect or disconnect the three inlet channels and the three outlet channels via the connection channel.

FIG. 1 is a schematic view of a vehicle having a coolant distribution device of the present invention. It is a perspective view which shows the example 1 of the switching valve which a cooling fluid distribution apparatus has. FIG. 3 is a plan sectional view including an inlet flow passage of the switching valve shown in FIG. 2; FIG. 3 is a plan sectional view including an outlet flow passage of the switching valve shown in FIG. 2; It is an expanded view of the switching valve shown in FIG. FIG. 3 is a chart showing the relationship between flow paths and regions of the valve body in the switching valve shown in FIG. 2; It is an expanded view of example 2 of a change valve. It is an expanded view of the example 3 of a switching valve. It is an expanded view of the example 4 of a switching valve. It is a side view of example 5 of a change valve. It is a top view of example 5 of a change valve. It is a perspective view of example 6 of a change valve. It is a sectional view of example 7 of a change valve. It is other sectional drawing of the specific example 7 of a switching valve. It is a typical top view of example 7 of a change valve. It is a typical bottom view of example 7 of a change valve. It is an expanded view of example 7 of a change valve.

  Hereinafter, an embodiment in the case where the cooling fluid distribution device of the present invention is provided in a vehicle will be described based on the drawings.

  A vehicle 10 shown in FIG. 1 includes an engine 11, a water pump 12, a switching valve 13, a radiator 14, a heater core 15, an electric motor 16, a motor drive circuit 17, and a controller 18.

  The engine 11 is a power source that generates torque to be transmitted to the drive wheels of the vehicle 10. The engine 11 may be any of a gasoline engine, a diesel engine, and a liquefied propane gas engine. The engine 11 burns the fuel in the combustion chamber, and converts the thermal energy at the time of combustion of the fuel into kinetic energy of the crankshaft. The engine 11 has a cylinder block water jacket 19, a cylinder head water jacket 20, and an exhaust port water jacket 21. The cylinder block water jacket 19 is provided on the cylinder block 22 of the engine 11, and the cylinder head water jacket 20 is provided on the cylinder head 23 of the engine 11.

  A cylindrical portion 24 connected to the cylinder head 23 is provided, and the cylindrical portion 24 has an exhaust passage. The exhaust passage is connected to the combustion chamber. The exhaust port water jacket 21 is provided on the cylindrical portion 24. The cylinder block water jacket 19, the cylinder head water jacket 20, and the exhaust port water jacket 21 are passages for the coolant.

  The water pump 12 has a suction port 25 and a discharge port 26, and is driven by the rotational force transmitted from the crankshaft to suck and discharge the coolant. The discharge port 26 is branched and connected to three cooling channels 27, 28 and 29 which are a plurality of paths. The cooling channel 27 is connected to the inlet 30 of the cylinder block water jacket 19. The cooling flow passage 28 is connected to the inlet 31 of the water jacket 20 for the cylinder head. The cooling channel 29 is connected to the inlet 32 of the exhaust port water jacket 21.

  The outlet 33 of the cylinder block water jacket 19 is connected to the cooling channel 34. An outlet 35 of the cylinder head water jacket 20 is connected to the cooling flow passage 36. The outlet 37 of the exhaust port water jacket 21 is connected to the cooling channel 38.

  The electric motor 16 can apply a current to rotate the rotation shaft, and the electric motor 16 can use, for example, a three-phase alternating current motor. The electric motor 16 has a stator and a rotor, and the stator has a winding for energization. The rotor is attached to the rotating shaft. The vehicle 10 has a power supply 39. The power source 39 is a secondary battery capable of charging and discharging. The motor drive circuit 17 electrically connects and disconnects the power supply 39 and the electric motor 16. The motor drive circuit 17 is configured by an inverter having a plurality of switching elements. The switching element is a semiconductor element.

  The controller 18 is activated by the current applied from the power supply 39 and outputs a signal for controlling the motor drive circuit 17. The controller 18 is a known electronic control device having an input port, an output port, a storage unit, and an arithmetic processing unit. By controlling the duty ratio of the signal input from the controller 18 to the motor drive circuit 17, the voltage and current applied to the windings of the electric motor 16 are controlled. By controlling the on / off ratio of the switching element of the motor drive circuit 17, that is, the duty ratio, it is possible to control the number of rotations and the torque of the electric motor 16 per unit time. Further, the controller 18 controls the motor drive circuit 17 to switch the direction of the current flowing through the winding of the electric motor 16 and switch the rotation direction of the rotation shaft of the electric motor 16.

  Further, as shown in FIG. 1, the signal of the coolant temperature sensor 40, the signal of the outside air temperature sensor 41A, the signal of the inside air temperature sensor 41B, the signal of the room temperature setting switch 41C, the signal of the ignition switch 42, and the signal of the angle sensor 43 are It is input to the controller 18. The coolant temperature sensor 40 detects the temperature (coolant temperature) of the coolant supplied to the cylinder block water jacket 19, the cylinder head water jacket 20, and the exhaust port water jacket 21 and outputs a signal. The outside air temperature sensor 41A detects the outside air temperature (outside air temperature) and outputs a signal. The inside air temperature sensor 41B detects the temperature in the vehicle compartment (inside air) and outputs a signal. The room temperature setting switch 41 </ b> C outputs, as a signal, a target setting temperature which is set by an operation of an occupant of the vehicle 10. The ignition switch 42 is switched on / off according to the operation of the occupant of the vehicle 10 or the condition of the vehicle 10. When the ignition switch 42 is turned on, the crankshaft of the engine 11 rotates and torque can be transmitted to the drive wheels of the vehicle 10. When the ignition switch 42 is turned off, the engine 11 is stopped.

  The angle sensor 43 detects the position in the rotation direction of the rotation shaft of the electric motor 16 and the rotation angle, and outputs a signal. For example, a magnetic sensor can be used as the angle sensor 43.

  The switching valve 13 has a first inlet channel 44, a second inlet channel 45, and a third inlet channel 46 into which the coolant flows. Further, the switching valve 13 has a first outlet channel 47, a second outlet channel 48, and a third outlet channel 49 through which the coolant flows.

  A blower motor 50 whose drive and stop are controlled by the controller 18 is provided. A heater core 15 is provided in the passage of air transported by the blower motor 50. The heater core 15 is a heat exchanger for warming the air for air conditioning, and the heater core 15 forms a passage for the coolant. The inlet 51 of the heater core 15 is connected to the second outlet flow passage 48 of the switching valve 13 via the cooling flow passage 52. The outlet 53 of the heater core 15 is connected to the suction port 25 of the water pump 12 via the cooling channel 54.

  The radiator 14 is disposed at the front of the engine room of the vehicle 10. The radiator 14 performs heat exchange between the coolant and air to reduce the temperature of the coolant. The inlet 55 of the radiator 14 is connected to the first outlet passage 47 of the switching valve 13 via the cooling passage 56. The outlet 57 of the radiator 14 is connected to the suction port 25 of the water pump 12 via the cooling channel 106.

(Specific example 1)
A first specific example of the switching valve 13 will be described with reference to FIG. 2, FIG. 3 and FIG. The switching valve 13 has a cylindrical housing 58 and a cylindrical valve body 59 housed in the housing 58. The housing 58 and the valve body 59 are made of metal or synthetic resin. The housing 58 is supported so as not to rotate by a bracket, a frame or the like in the engine compartment. The valve body 59 is connected to the rotating shaft 60 of the electric motor 16. When the rotational force of the electric motor 16 is transmitted to the valve body 59, the valve body 59 can rotate clockwise and counterclockwise in FIG. 2 within a predetermined angle range centered on the axis A1. The controller 18 controls the rotation direction and the rotation angle of the valve body 59 by controlling the rotation direction and the rotation angle of the electric motor 16. The axis A1 is the center of rotation of the housing 58, the valve body 59, and the rotating shaft 60.

  As shown in FIG. 3, mounting holes 61, 62 and 63 are provided to penetrate the housing 58 in the radial direction. The mounting holes 61, 62, 63 are arranged at mutually different positions in the circumferential direction of the housing 58, and the mounting holes 61, 62, 63 are arranged at the same position in the direction of the axis A1. FIG. 3 shows an example in which the mounting holes 61, 62, 63 are arranged at intervals of 120 degrees.

  The valve body 59 has a passage 124 centered on the axis A1. There are provided communication holes 65, 66, 67 which pass through the valve body 59 in the radial direction and are connected to the passage 124 from the outer peripheral surface 64, respectively. The passage 124 is connected to all of the communication holes 65, 66, 67. The communication holes 65, 66, 67 are arranged at mutually different positions in the rotational direction of the valve body 59. The arrangement position of the communication holes 65, 66, 67 in the direction of the axis A1 is the same as the arrangement position of the mounting holes 61, 62, 63 in the direction of the axis A1. The communication holes 65, 66, 67 are arranged over a range of predetermined angles in the rotational direction of the valve body 59.

  As shown in FIG. 5, the communication hole 65 is disposed in the range of 210 degrees to 280 degrees, the communication hole 66 is disposed over the range of 70 degrees to 170 degrees, and the communication hole 67 is in the range of 340 degrees to 60 degrees. Are arranged over the range of The communication hole 65 and the communication hole 66 are arranged at an angle of 40 degrees, and the communication hole 65 and the communication hole 67 are arranged at an angle of 60 degrees. The communication hole 66 and the communication hole 67 are disposed at an interval of 10 degrees. For convenience, in the rotational direction of the valve body 59, the first end of the communication hole 67 is 60 degrees, and the position separated from the first end by 60 degrees toward the second end of the communication hole 67 is 0 degree doing. In the rotational direction of the valve body 59, a position corresponding to 0 degree is taken as a reference position for convenience.

  The communication hole 65 is divided in the order of the areas E9, E10, E11, E12, E6, E5, E4 from the position of 210 degrees of the valve body 59 to the range of 280 degrees. The communication hole 66 is divided in the order of the areas E7, E8, E9, E10, E11, E12, E6, E5, E4, E3 over the range of 70 degrees from the valve body 59 to 170 degrees. The communication hole 67 is divided in the order of the areas E10, E11, E12, E6, E5, E4, E3, E2 from the 340 degree position of the valve body 59 to the range of 60 degrees.

  A first connection channel 68 is formed by the areas E12, E6, E5, E4 of the communication hole 65 and the areas E10, E11 of the communication hole 67. In addition, a second connection channel 69 is formed by the areas E12, E6, E5, E4, E3 of the communication hole 66 and the areas E9, E10, E11 of the communication hole 65. Furthermore, a third connection channel 70 is formed by the areas E12, E6, E5, E4, E3, E2 of the communication hole 67 and the areas E7, E8, E9, E10, E11 of the communication hole 66.

  As shown in FIG. 3, the connection pipe 71 is inserted into the mounting hole 61 and fixed to the housing 58. Further, a seal member for sealing between the housing 58 and the connection pipe 71 is provided. The transport pipe 72 is connected to the connection pipe 71, and the cooling channel 34 is provided in the transport pipe 72. A seal member 73 is disposed in the connection pipe 71. The seal member 73 is made of synthetic rubber and has a cylindrical shape. A spring 74 is disposed in the connection pipe 71, and the spring 74 presses the seal member 73 against the outer peripheral surface 64 of the valve body 59. A first inlet channel 44 is formed in the seal member 73, and the first inlet channel 44 is connected to the cooling channel 34.

  At least a part of the arrangement area of the first inlet flow passage 44 and the arrangement area of the first connection flow passage 68 overlap in the direction of the axis A1 of the valve body 59. Then, when the valve body 59 rotates, the first inlet channel 44 is connected to or disconnected from the first connection channel 68.

  The connecting pipe 75 is inserted into the mounting hole 62 and fixed relative to the housing 58. Further, a seal member for sealing between the housing 58 and the connection pipe 75 is provided. The transport pipe 76 is connected to the connection pipe 75, and the cooling flow path 36 is provided in the transport pipe 76. A seal member 77 is disposed in the connection pipe 75. The seal member 77 is made of synthetic rubber and has a cylindrical shape. A spring 78 is disposed in the connection tube 75, and the spring 78 presses the seal member 77 against the outer peripheral surface 64 of the valve body 59. A second inlet channel 45 is formed in the seal member 77, and the second inlet channel 45 is connected to the cooling channel 36.

  At least a part of the arrangement area of the second inlet flow passage 45 and the arrangement area of the second connection flow passage 69 overlap in the direction of the axis A1 of the valve body 59. Then, when the valve body 59 rotates, the second inlet channel 45 is connected to or disconnected from the second connection channel 69.

  The connection pipe 278 is inserted into the mounting hole 63 and fixed relative to the housing 58. Further, a seal member for sealing between the housing 58 and the connection pipe 278 is provided. The transport pipe 79 is connected to the connection pipe 278, and the cooling channel 38 is provided in the transport pipe 79. A seal member 80 is disposed in the connection pipe 278. The seal member 80 is made of synthetic rubber and has a cylindrical shape. A spring 81 is disposed in the connection tube 278, and the spring 81 presses the seal member 80 against the outer peripheral surface 64 of the valve body 59. A third inlet channel 46 is formed in the seal member 80, and the third inlet channel 46 is connected to the cooling channel 38. The first inlet channel 44, the second inlet channel 45, and the third inlet channel 46 are arranged in parallel to one another.

  At least a part of the arrangement area of the third inlet flow passage 46 and the arrangement area of the third connection flow passage 70 overlap in the direction of the axis A1 of the valve body 59. Then, when the valve body 59 rotates, the third inlet channel 46 is connected or disconnected to the third connection channel 70.

  As shown in FIG. 4, mounting holes 82, 83, 84 are provided to penetrate the housing 58 in the radial direction. The mounting holes 82, 83, 84 are arranged at mutually different positions in the circumferential direction of the housing 58, and the mounting holes 82, 83, 84 are arranged at the same position in the direction of the axis A1. FIG. 4 shows an example in which the mounting holes 82, 83, 84 are arranged at intervals of 120 degrees. Further, the arrangement position of the mounting holes 82, 83, 84 in the direction of the axis A1 of the housing 58 is different from the arrangement position of the mounting holes 61, 62, 63 in the direction of the axis A1 of the housing 58.

  The arrangement position of the mounting hole 82 in the circumferential direction of the housing 58 is the same as the arrangement position of the mounting hole 61 in the circumferential direction of the housing 58. The arrangement position of the mounting hole 83 in the circumferential direction of the housing 58 is the same as the arrangement position of the mounting hole 62 in the circumferential direction of the housing 58. The arrangement position of the mounting holes 84 in the circumferential direction of the housing 58 is the same as the arrangement position of the mounting holes 63 in the circumferential direction of the housing 58.

  As shown in FIG. 4, the valve body 59 has communication holes 85, 86, 87, 88, 89 connected to the passage 124 from the outer peripheral surface 64. That is, the passage 124 is connected to all of the communication holes 85, 86, 87, 88, 89. The communication holes 85, 86, 87, 88, 89 are arranged at different positions in the rotational direction of the valve body 59. The arrangement position of the communication holes 85, 86, 87, 88, 89 in the direction of the axis A1 is the same as the arrangement position of the mounting holes 82, 83, 84 in the direction of the axis A1. The communication holes 85, 86, 87, 88, 89 are arranged over the range of a predetermined angle in the rotational direction of the valve body 59.

  As shown in FIG. 5, the communication hole 85 is disposed over a range of 0 degrees from the 0 degree position on the outer peripheral surface 64 of the valve body 59 to 10 degrees. The communication hole 86 is disposed from the position of 80 degrees on the outer peripheral surface 64 of the valve body 59 to the position of 140 degrees. The communication hole 87 is disposed from the position of 230 degrees on the outer peripheral surface 64 of the valve body 59 to the position of 250 degrees. The communication hole 88 is disposed from the position of 260 degrees on the outer peripheral surface 64 of the valve body 59 to the position of 300 degrees. The communication hole 89 is disposed from the position of 310 degrees on the outer peripheral surface 64 of the valve body 59 to the position of 320 degrees. Communication hole 85 and communication hole 86 are arranged at 70 degrees, communication hole 86 and communication hole 87 are arranged at 90 degrees, and communication hole 87 and communication hole 88 are arranged at 10 degrees. The communication hole 88 and the communication hole 89 are disposed at an interval of 10 degrees.

  The communication hole 85 forms a single region E12. The communication holes 86 are formed in the order of the areas E8, E9, E10, E11, E12, E6, and E5. The communication hole 87 is constituted by the regions E11 and E12. The communication hole 88 is constituted by the regions E5, E4, E3 and E2. The communication hole 89 is constituted by a single region E7.

  A fourth connection channel 90 is formed by the areas E12, E6, E5 of the communication hole 86 and the area E11 of the communication hole 87. In addition, a fifth connection channel 91 is formed by the area E12 of the communication hole 85 and the areas E8, E9, E10, and E11 of the communication hole 86. Further, a sixth connection channel 92 is formed by the area E12 of the communication hole 87, the areas E5, E4, E3, E2 of the communication hole 88 and the area E7 of the communication hole 89.

  As shown in FIG. 4, the connection pipe 93 is inserted into the mounting hole 82 and fixed to the housing 58. Further, a seal member for sealing between the housing 58 and the connection pipe 93 is provided. A transport pipe 94 is connected to the connection pipe 93, and a cooling channel 95 is provided in the transport pipe 94. The cooling channel 95 is connected to the suction port 25. A seal member 96 is disposed in the connection pipe 93. The seal member 96 is made of synthetic rubber and has a cylindrical shape. A spring 97 is disposed in the connection pipe 93, and the spring 97 presses the seal member 96 against the outer peripheral surface 64 of the valve body 59. A third outlet channel 49 is formed in the seal member 96, and the third outlet channel 49 is connected to the cooling channel 95.

  At least a part of the arrangement region of the third outlet flow passage 49 and the arrangement region of the sixth connection passage 92 overlap in the direction of the axis A1 of the valve body 59. Then, when the valve body 59 rotates, the third outlet channel 49 is connected to or disconnected from the sixth connection channel 92.

  The connecting pipe 98 is inserted into the mounting hole 83 and fixed relative to the housing 58. Further, a seal member for sealing between the housing 58 and the connection pipe 98 is provided. A transfer pipe 99 is connected to the connection pipe 98, and a cooling channel 56 is provided in the transfer pipe 99. The seal member 100 is disposed in the connection pipe 98. The seal member 100 is made of synthetic rubber and has a cylindrical shape. The spring 101 is disposed in the connection pipe 98, and the spring 101 presses the seal member 100 against the outer peripheral surface 64 of the valve body 59. A first outlet channel 47 is formed in the seal member 100, and the first outlet channel 47 is connected to the cooling channel 56.

  At least a part of the arrangement region of the first outlet flow passage 47 and the arrangement region of the fourth connection passage 90 overlap in the direction of the axis A1 of the valve body 59. Then, when the valve body 59 rotates, the first outlet channel 47 is connected to or disconnected from the fourth connection channel 90.

  The connecting pipe 102 is inserted into the mounting hole 84 and fixed relative to the housing 58. Further, a seal member for sealing between the housing 58 and the connection pipe 102 is provided. The transport pipe 103 is connected to the connection pipe 102, and a cooling channel 52 is provided in the transport pipe 103. A seal member 104 is disposed in the connection pipe 102. The seal member 104 is made of synthetic rubber and has a cylindrical shape. A spring 105 is disposed in the connection tube 102, and the spring 105 presses the seal member 104 against the outer peripheral surface 64 of the valve body 59. A second outlet channel 48 is formed in the seal member 104, and the second outlet channel 48 is connected to the cooling channel 52. The first outlet channel 47, the second outlet channel 48, and the third outlet channel 49 are disposed in parallel to one another. The first outlet channel 47, the second outlet channel 48, and the third outlet channel 49 have a function of returning the coolant to the water pump 12.

  At least a part of the arrangement region of the second outlet flow passage 48 and the arrangement region of the fifth connection passage 91 overlap in the direction of the axis A1 of the valve body 59. Then, when the valve body 59 rotates, the second outlet flow path 48 is connected to or disconnected from the fifth connection flow path 91. The passage 124 provided in the valve body 59 is a first connection passage 68, a second connection passage 69, a third connection passage 70, a fourth connection passage 90, a fifth connection passage 91, and a sixth connection. It is connected to all of the flow paths 92.

  The function of the vehicle 10 shown in FIG. 1 will be described. When the ignition switch 42 is turned on and the crankshaft of the engine 11 rotates, the water pump 12 is driven by the rotational force of the crankshaft. The water pump 12 sucks the coolant from the suction port 25 and discharges the coolant from the discharge port 26. A part of the coolant discharged from the discharge port 26 is sent to the first inlet flow path 44 of the switching valve 13 via the cooling flow path 27, the cylinder block water jacket 19 and the cooling flow path 34. A portion of the coolant discharged from the discharge port 26 is sent to the second inlet flow path 45 of the switching valve 13 via the cooling flow path 28, the water jacket 20 for the cylinder head, and the cooling flow path 36. A part of the coolant discharged from the discharge port 26 is sent to the third inlet flow path 46 of the switching valve 13 via the cooling flow path 29, the exhaust port water jacket 21 and the cooling flow path 38.

  The controller 18 controls the operation, stop and stop positions of the valve body 59 of the switching valve 13 based on the input signal and the information stored in the storage device. Specifically, a duty ratio of a signal to be supplied to the motor drive circuit 17, for example, a PWM signal is controlled, and the position of the valve body 59 of the switching valve 13 is changed and stopped. The controller 18 can process the signal of the angle sensor 43 to determine the position of the valve body 59 in the rotational direction.

  FIG. 6 shows an example of switching the connection pattern and the shutoff pattern of the flow paths due to the operation of the valve body 59. The position P0 represents a position at which the valve body 59 is stopped so that the second inlet channel 45 is located between 180 degrees and 190 degrees of the valve body 59, as shown in FIG. Positions P1 to P7 can be stopped at intervals of 10 degrees from position P1 at which valve 59 moved left by 10 degrees from position P0 to position P7 at which valve 59 moved 60 degrees left from position P0 Indicate the position. Positions Q1 to Q5 stop at intervals of 10 degrees from position Q1 at which valve body 59 has moved 10 degrees to the right and left from position P0 and position Q5 at which valve body 59 moves 50 degrees to the right from position P0 Indicates possible positions. The operating angle of the valve body 59 is assumed to be 120 degrees for convenience.

  The controller 18 determines that the supply of the coolant to the heater core 53 is unnecessary based on the outside air temperature, the inside air temperature, the set temperature, the coolant temperature, etc., the valve body 59 can be any of position Q1 to position Q5. It is possible to stop. The controller 18 determines that the coolant needs to be supplied to the heater core 53 based on the outside air temperature, the inside air temperature, the set temperature, the coolant temperature, and the like, the valve body 59 may be any of position P1 to position P6. It is possible to stop. The controller 18 can stop the valve body 59 at the position P0 when the condition for warming up the engine 11 is satisfied. The controller 18 can stop the valve body 59 at the position P7 when the condition for flowing the coolant through the entire coolant flow path is satisfied.

  When a circle is written in a frame where any of the first inlet channel 44, the second inlet channel 45, and the third inlet channel 46 intersects with any of the regions E1 to 12, the inlet channel Means in the position corresponding to the area. That is, the first inlet flow path 44 and the first connection flow path 68 are connected, the second inlet flow path 45 and the second connection flow path 69 are connected, and the third inlet flow path 46 and the third connection flow path Means that 70 is connected.

  When the inside of the frame where any one of the first inlet channel 44, the second inlet channel 45, and the third inlet channel 46 intersects with any of the regions E1 to 12 is blank, the inlet channel is out of the region Means to be in the same position. That is, the first inlet flow path 44 and the first connection flow path 68 are shut off, the second inlet flow path 45 and the second connection flow path 69 are shut off, and the third inlet flow path 46 and the third connection flow path 70 means that it is cut off.

  When a circle is described in a frame where any one of the first outlet channel 47, the second outlet channel 48, and the third outlet channel 49 intersects with any of the regions E1 to 12, the outlet channel Means in the position corresponding to the area. That is, the first outlet channel 47 and the fourth connecting channel 90 are connected, the second outlet channel 48 and the fifth connecting channel 91 are connected, and the third outlet channel 49 and the sixth connecting channel It means that 92 and is connected.

  When the inside of the frame where any of the first outlet channel 47, the second outlet channel 48, and the third outlet channel 49 intersects with any of the regions E1 to 12 is blank, the outlet channel is out of the region Means to be in the same position. That is, the first outlet passage 47 and the fourth connection passage 90 are shut off, the second outlet passage 48 and the fifth connection passage 91 are shut off, and the third outlet passage 49 and the sixth connection passage Means that 92 is blocked.

  The first example of the switching valve 13 includes the first inlet channel 44, the second inlet channel 45, the third inlet channel 46, the first connection channel 68, the second connection channel 69, and the third connection channel 70. Are arranged in the same range in the direction of the axis A1 of the valve body 59. The first outlet channel 47, the second outlet channel 48, the third outlet channel 49, the fourth connection channel 90, the fifth connection channel 91, and the sixth connection channel 92 It is arranged in the same range in the A1 direction. For this reason, it can suppress that the arrangement | positioning space in the axial line A1 direction of the switching valve 13 is expanded.

(Specific example 2)
FIG. 7 is a development view showing a specific example 2 of the switching valve 13. Of the first inlet channel 44, the second inlet channel 45, the third inlet channel 46, the first connection channel 68, the second connection channel 69, and the third connection channel 70 in the rotational direction of the valve body 59. The position and configuration are the same as in the first example of the switching valve 13.

  In the circumferential direction of the housing 58, the position of the first outlet channel 47 is disposed at a position of 60 degrees with respect to the second inlet channel 45 and the first inlet channel 44. In the circumferential direction of the housing 58, the position of the second outlet channel 48 is disposed at a position of 60 degrees with respect to the third inlet channel 46 and the second inlet channel 45. In the circumferential direction of the housing 58, the position of the third outlet channel 49 is disposed at a position of 60 degrees with respect to the first inlet channel 44 and the third inlet channel 46.

  In the rotation direction of the valve body 59, the communication hole 89 is provided between 10 degrees and 20 degrees. In the rotational direction of the valve body 59, the communication hole 85 is provided between 60 degrees and 70 degrees. The communication hole 86 is disposed in the range of 140 degrees to 200 degrees. The communication hole 87 is disposed in the range of 290 degrees to 310 degrees. The communication hole 88 is disposed in the range of 320 degrees to 360 degrees.

  Similar to the first example of the switching valve 13, the second example of the switching valve 13 has the position and the operating state shown in FIG.

(Specific example 3)
FIG. 8 is a development view showing a specific example 3 of the switching valve 13. The communication hole 67 is disposed over the range of 45 degrees to 125 degrees of the valve body 59. The communication hole 66 is disposed over the range of 135 degrees to 135 degrees of the valve body 59. The communication hole 65 is disposed over the range of 275 degrees to 245 degrees of the valve body 59. Regions E9 to E4 of the communication hole 65 form a first connection channel 68. The regions E7 to E12 of the communication hole 66 and the regions E6 to E3 of the communication hole 66 form a second connection channel 69. The regions E10 to E12 of the communication hole 67 and the regions E6 to E2 of the communication hole 67 form a third connection channel 70.

  The communication hole 88 is disposed over a range of 205 degrees to 245 degrees in the rotational direction of the valve body 59. The communication hole 89 is provided between 255 degrees and 265 degrees in the rotational direction of the valve body 59. Communication holes 107, 108 and 109 are provided on the outer peripheral surface 64 of the valve body 59. The communication holes 107, 108 and 109 are arranged at the same position as the communication holes 88 and 89 in the axial direction of the valve body 59.

  The communication hole 107 is provided over a range of 55 degrees to 75 degrees of the valve body 59. The communication hole 107 is divided into areas E11 and E12. The communication hole 108 is provided over a range of 145 degrees to 195 degrees of the valve body 59. The communication hole 108 is divided into regions E8, E9, E10, E11 and E12. The communication hole 109 is provided from the range of 305 degrees of the valve body 59 to the range of 325 degrees. The communication hole 109 is divided into regions E12 and E6. A fifth connection channel 91 is formed by the areas E11 and E12 of the communication hole 107. A sixth connection channel 92 is formed by the areas E8 to E12 of the communication hole 108 and the areas E5 to E2 of the communication hole 88. A fourth connection channel 90 is formed by the regions E12 and E6 of the communication hole 109, the region E7 of the communication hole 89, and the region E2 of the communication hole 88. When the communication holes 65, 66, 67, 107, 108, 109 are provided in the valve body 59 shown in FIG. 8, all the communication holes 65, 66, 67 are in the passage 124 as in the valve body 59 shown in FIG. Connected Further, the communication holes 107, 108, 109 are all connected to the passage 124 in the same manner as the valve body 59 shown in FIG.

  In the rotational direction of the valve body 59 shown in FIG. 8, the arrangement positions of the first outlet flow passage 47 and the third outlet flow passage 49 are the arrangement positions of the first outlet flow passage 47 and the third outlet flow passage 49 shown in FIG. It is opposite to.

  In the switching valve 13 shown in FIG. 8, when the valve body 59 rotates, the first inlet channel 44 is connected or disconnected to the first connection channel 68, and the second inlet channel 45 is connected to the second connection channel 69 or It is shut off, and the third inlet passage 46 is connected or blocked to the third connection passage 70. The first outlet channel 47 is connected or blocked to the fourth connection channel 90, the second outlet channel 48 is connected or blocked to the fifth connection channel 91, and the third outlet channel 49 is It is connected to or disconnected from the sixth connection channel 92.

  In the first to third embodiments of the switching valve 13, the first inlet passage 44, the second inlet passage 45, the third inlet passage 46, and the communication holes 66 and 67 are provided in the first region in the axial direction of the valve body 59. , 68 are provided. Further, in the second region different from the first region in the axial direction of the valve body 59, the first outlet channel 47, the second outlet channel 48, the third outlet channel 49, the communication hole 85, 86, 87, 88, 89, 107, 108, 109 are provided. That is, the configuration is disposed in two stages in the axial direction of the valve body 59.

(Specific example 4)
FIG. 9 shows a fourth example of the switching valve 13. The configuration is arranged in three stages in the axial direction of the valve body 59. A groove 110 is provided in the range of 230 degrees to 240 degrees of the valve body 59. The groove 110 has an area E11, and the area E11 of the groove 110 constitutes a fourth connection channel 90.

  Further, the groove 111 is provided over the range of 0 degrees to 40 degrees of the valve body 59, and the groove 112 is provided over the range of 100 degrees to 130 degrees of the valve body 59. The groove 113 is provided over the range of 140 degrees to 180 degrees of the valve body 59, and the groove 114 is provided over the range of 190 degrees to 200 degrees of the valve body 59. The grooves 111, 112, 113, and 114 are arranged in the same area in the axial direction of the valve body 59. In the grooves 111, 112, 113 and 114, the arrangement position of the valve body 59 in the axial direction is different from the arrangement position of the communication holes 65, 66 and 67, and different from the arrangement position of the communication holes 85, 86 and 110. .

  The groove 111 has regions E12, E6, E5 and E4. The groove 112 has regions E10, E11 and E12. The regions E12, E6, E5, E4 of the groove 111 and the regions E10, E11 of the groove 112 form a first connection channel 68. The groove 113 has regions E5, E4, E3 and E2. The groove 114 has an area E7. The region E12 of the groove 112, the regions E5, E4, E3, E2 of the groove 113, and the region E7 of the groove 114 form a sixth connection channel 92. The other configuration in the range of 0 degrees to 240 degrees of the valve body 59 is the same as the specific example 1 of the switching valve 13 shown in FIG. 5.

  The first inlet passage 44 is disposed at the same position as the third inlet passage 46 and the second outlet passage 48 in the rotational direction of the valve body 59, and the third inlet passage 46 in the axial direction of the valve body 59. And the second outlet channel 48 are disposed at different positions. The third outlet channel 49 is disposed at the same position as the second inlet channel 45 and the first outlet channel 47 in the rotational direction of the valve body 59, and the second inlet channel 45 in the axial direction of the valve body 59. And the first outlet channel 47 are disposed at different positions. The first inlet channel 44, the third outlet channel 49, and the grooves 111, 112, 113, and 114 are arranged at the same position in the axial direction of the valve body 59.

  In the switching valve 13 shown in FIG. 9, when the valve body 59 rotates, the first inlet channel 44 is connected or blocked to the first connection channel 68. The third outlet channel 49 is connected to or disconnected from the sixth connection channel 92. If the elements are arranged in three stages in the axial direction of the valve body 59 as in the fourth specific example of the switching valve 13, the outer diameter of the switching valve 13 can be made as small as possible.

(Specific example 5)
10 and 11 show a fifth example of the switching valve 13. The housing 58 has a cylindrical portion 116 and a disc portion 117 connected to the cylindrical portion 116. The connection pipes 93, 98, 102 are attached to the disc portion 117. The connecting pipes 93, 98, 102 are disposed on an imaginary circle B1 centered on the axis A1.

  The outer peripheral surface 64 of the valve body 59 contacts the inner peripheral surface of the cylindrical portion 116. The valve body 59 has an end face 118 perpendicular to the axis A1, and the end face 118 contacts the inner surface of the disc portion 117. The valve body 59 has communicating holes 65, 66, and 67 as in FIG. The communication holes 65, 66, 67 are all connected to the passage 124. The communication holes 65, 66 and 67 each have a region shown in FIG. In addition, communication holes 85, 86, 87, 88, and 89 are provided from the end surface 118 of the valve body 59 to the passage 124. In plan view of the valve body 59, the communication holes 85, 86, 87, 88, 89 are provided in an arc shape around the axis A1. These communication holes 85, 86, 87, 88, 89 are arranged on the same circumference as the first outlet channel 47, the second outlet channel 48 and the third outlet channel 49. The communication holes 85, 86, 87, 88, 89 each have a region shown in FIG. The switching valve 13 shown in FIGS. 10 and 11 can obtain the same effect as the switching valve 13 shown in FIGS. 2 to 4.

  Further, the switching valve 13 shown in FIG. 7 can be configured as the switching valve 13 shown in FIGS. 10 and 11. Furthermore, the configuration shown in the upper and middle stages of the switching valve 13 shown in FIG. 9 is provided on the outer peripheral surface 64 and the cylindrical portion 116 of the valve body 59 in FIGS. Can be provided on the outer peripheral surface 64 and the tubular portion 116 of the valve body 59 in FIGS. 10 and 11. Furthermore, it is also possible to provide a groove on the end face 119 opposite to the end face 118 of the valve body 59 of FIG.

(Example 6)
FIG. 12 shows a specific example 6 of the switching valve 13. The switching valve 13 has a ball-shaped valve body 120 and a ball-shaped housing 121 that rotatably supports the valve body 120. The housing 121 has a ball-shaped space, and the valve body 120 is rotatable in the housing 121 about the axis A1. The housing 121 is provided with a shaft hole (not shown), and the rotation shaft of the electric motor is connected to the valve body 120 through the shaft hole.

  The connecting pipes 71, 75, 78 are provided on the circumference centered on the axis line A1. In addition, connection pipes 93, 98, 102 are provided on the circumference centered on the axis line A1. On the outer circumferential surface of the valve body 120, on the same circumference as the connection pipes 71, 75, 78, a configuration corresponding to the communication holes 65, 66, 67 of FIG. 3 is provided. On the outer circumferential surface of the valve body 120, on the same circumference as the connection pipes 93, 98, 102, a configuration corresponding to the communication holes 85, 87, 88, 89 in FIG. 4 is provided. When the switching valve 13 shown in FIG. 12 rotates the valve body 120 by the electric motor, the same effect as the switching valve 13 shown in FIG. 2, FIG. 3 and FIG. 4 can be obtained.

(Example 7)
13 to 17 show a specific example 7 of the switching valve 13. The switching valve 13 has a housing 200 and a valve body 201. The valve body 201 has a first movable portion 202 and a second movable portion 203. The housing 200 has a cylindrical portion 204, a first disc portion 205 and a second disc portion 206. The first disc portion 205 is connected to the first end of the cylindrical portion 204, and the second disc portion 206 is connected to the second end of the cylindrical portion 204. The first disc portion 205 and the second disc portion 206 are perpendicular to an axis A 1 which is the center of the cylindrical portion 204. The housing 200 does not move in the direction of the axis A1 and is impossible around the axis A1. The first movable portion 202 is movable in the housing 200 in the direction of the axis A1. The first movable portion 202 has a cylinder portion 207, a partition wall 208 provided at an end of the cylinder portion 207, and a partition wall 209 connected to the inner circumferential surface of the cylinder portion 207.

  In the cylinder portion 207, a space 210 is formed between the partition wall 208 and the partition wall 209. As shown in FIG. 14, when the first movable portion 202 moves in the direction of the axis A1 and the partition wall 208 separates from the first disc portion 205, a space 211 is formed between the first disc portion 205 and the partition wall 208. Be done. The second inlet channel 45, the third inlet channel 46, the second outlet channel 48, and the third outlet channel 49 are provided to penetrate the first disc portion 205 in the direction of the axis A1. The inner diameter of the second inlet channel 45 and the inner diameter of the third inlet channel 46 are the same. The inner diameter of the second outlet channel 48 and the inner diameter of the third outlet channel 49 are the same. The inner diameter of the second inlet channel 45 and the inner diameter of the third inlet channel 46 are larger than the inner diameter of the second outlet channel 48 and the inner diameter of the third outlet channel 49.

  As shown in FIG. 15, the second inlet channel 45 and the third inlet channel 46 are disposed on an imaginary circle B2 centered on the axis A1, and the second outlet channel 48 and the third outlet channel 49 are It arrange | positions on virtual circle B3 centering on axis line A1. The radius of the imaginary circle B2 is larger than the radius of the imaginary circle B3. The second inlet channel 45 and the third inlet channel 46 are arranged at an interval of 180 degrees in the circumferential direction about the axis A1. The second outlet flow passage 48 and the third outlet flow passage 49 are disposed at an interval of 180 degrees in the circumferential direction about the axis A1. The second outlet flow channel 48 and the third outlet flow channel 49 are disposed at intervals of 90 degrees with respect to the second inlet flow channel 45 and the third inlet flow channel 46, respectively.

  The flow path 212-the flow path 220 which penetrate the partition wall 208 in the direction of the axis A1 are provided. The flow paths 212 to 215 are disposed at different positions on the imaginary circle B2. The width of each of the flow channels 212 to 215 is smaller than the inner diameter of the second inlet flow channel 45 and the inner diameter of the third inlet flow channel 46 in the radial direction centering on the axis A1. The flow paths 216 to 220 are arranged at different positions on the imaginary circle B3. The widths of the flow channels 216 to 220 are smaller than the inner diameter of the second outlet flow channel 48 and the inner diameter of the third outlet flow channel 49 in the radial direction centering on the axis A1. The channels 212 to 220 are all connected to the space 210.

  The two first inlet channels 44 and the two first outlet channels 47 are provided to penetrate the second disk portion 206 in the direction of the axis A1. As shown in FIG. 16, the two first inlet channels 44 are disposed on the imaginary circle B3, and the two first outlet channels 47 are disposed on the imaginary circle B2. The two first inlet channels 44 are arranged at an interval of 180 degrees in the circumferential direction about the axis A1. The two first outlet flow paths 47 are arranged at an interval of 180 degrees in the circumferential direction about the axis A1. The two first inlet channels 44 and the two first outlet channels 47 are arranged at an interval of 90 degrees. The inner diameters of the two first inlet channels 44 are the same, and the inner diameters of the two first outlet channels 47 are the same. The inner diameters of the two first outlet channels 47 are larger than the inner diameters of the two first inlet channels 44.

  Flow paths 221 to 228 which penetrate the second movable portion 203 in the direction of the axis A1 are provided. The flow paths 221 to 224 are disposed at different positions on the imaginary circle B2. The respective widths of the flow paths 221 to 224 are smaller than the inner diameters of the two first outlet flow paths 47 in the radial direction centering on the axis A1. The flow paths 225 to 228 are arranged at different positions on the imaginary circle B3. The respective widths of the flow paths 225 to 228 are smaller than the inner diameters of the two first inlet flow paths 44 in the radial direction about the axis A1.

  The first movable portion 202 and the second movable portion 203 are connected to rotate integrally. The cylinder portion 207 and the second movable portion 203 are, for example, spline-connected. A space 229 is formed between the second movable portion 203 and the partition wall 209. An elastic member 239 is disposed in the space 229. The elastic member 239 is a metal compression spring, and the elastic member 239 expands and contracts in the direction of the axis A1. The first end of the elastic member 239 contacts the second movable portion 203, and the second end of the elastic member 239 contacts the partition 209. The flow paths 221 to 228 are all connected to the space 229. When the second movable portion 203 moves in the direction of the axis A1 and separates from the second disc portion 206 as shown in FIG. 14, a space 230 is formed between the second movable portion 203 and the second disc portion 206. Ru.

  An axial hole 231 is provided which penetrates the second disc portion 206 in the direction of the axis A1, an axial hole 232 which penetrates the second movable portion 203 in the direction of the axis A1, and an axial hole which penetrates the partition 209 in the direction of the axis A1. 233 is provided. The axial holes 231, 232, 233 are disposed about the axis A1. The rotating shaft 234 is disposed in the shaft holes 231, 232, 233. The rotation shaft 234 and the partition wall 209 are spline-coupled to each other, and the rotation shaft 234 and the first movable portion 202 integrally rotate. The rotary shaft 234 is hollow, and the rotary shaft 234 is an element of the electric motor 16 of FIG. The rotating shaft 234 does not move in the direction of the axis A1. The first movable portion 202 and the second movable portion 203 are movable in the direction of the axis A1 with respect to the rotation axis 234.

  The rotation shaft 234 has a flow passage 235 in the direction of the axis A1, and a flow passage 236 penetrating the rotation shaft 234 in the radial direction is provided. The flow path 236 is disposed between the partition wall 208 and the partition wall 209 in the direction of the axis A1. The flow path 236 is connected to the flow path 235. A lid 237 is fixed at a position located in the space 210 on the rotation shaft 234. The lid 237 is annular, the lid 237 is annular, and an annular seal member 238 is attached to the lid 237. The seal member 238 is made of synthetic rubber, and when the seal member 238 contacts the partition wall 209 to form a seal surface, the seal member 238 shuts off the space 210 and the flow path 236. When the seal member 238 separates from the partition 209, the space 210 is connected to the flow path 235 via the flow path 236.

  Among the flow channels 212 shown in FIG. 15, the end of the portion separated from the flow channels 213 in the circumferential direction is disposed at a position corresponding to 0 degrees shown in FIG. It is arranged in the range of degrees. The flow path 212 is divided into areas E12, E6, E5, E4, E3, and E2 in the circumferential direction of the valve body 201. The flow path 213 is disposed in the range of 70 degrees to 120 degrees in the circumferential direction of the valve body 201. The flow channel 213 is divided into regions E7, E8, E9, E10, and E11. A third connection channel 70 is formed by the regions E12, E6, E5, E4, E3, E2 of the flow channel 212 and the regions E7, E8, E9, E10, E11 of the flow channel 213.

  The flow channel 214 is disposed in the range of 180 degrees to 230 degrees. The flow path 214 is divided into areas E12, E6, E5, E4, and E3 in the circumferential direction of the valve body 201. The flow path 215 is disposed in the range of 270 degrees to 300 degrees in the circumferential direction of the valve body 201. The flow channel 215 is divided into regions E9, E10, and E11. A second connection channel 69 is formed by the regions E12, E6, E5, E4, E3 of the flow channel 214 and the regions E9, E10, E11 of the flow channel 215.

  The flow path 216 is disposed in the range of 90 degrees to 100 degrees. The flow path 216 has a region E12. The flow path 217 is disposed in the range of 170 degrees to 210 degrees in the circumferential direction of the valve body 201. The flow channel 217 is divided into regions E8, E9, E10, and E11. A fifth connection channel 91 is formed by the region E12 of the flow channel 216 and the regions E8, E9, E10, and E11 of the flow channel 217.

  The flow path 218 is disposed in the range of 270 degrees to 280 degrees. The flow path 218 has a region E12. The flow path 219 is disposed in the range of 290 degrees to 330 degrees in the circumferential direction of the valve body 201. The flow path 219 is divided into regions E5, E4, E3, and E2. The flow path 220 is disposed in the range of 340 degrees to 350 degrees in the circumferential direction of the valve body 201. The flow path 220 has a region E7. A sixth connection channel 92 is formed by the area E12 of the flow path 218, the areas E5, E4, E3, E2 of the flow path 219, and the area E7 of the flow path 220.

  The flow path 221 shown in FIG. 16 is arranged in the range of 0 degrees to 20 degrees as shown in FIG. The flow path 221 has regions E12 and E6. The flow path 222 is disposed in the range of 110 degrees to 120 degrees in the circumferential direction of the valve body 201. The flow path 222 has a region E11. The areas E12 and E6 of the flow path 221 and the area E11 of the flow path 222 form a fourth connection flow path 90 which is connected to or disconnected from one first outlet flow path 47.

  The flow path 223 is disposed in the range of 180 degrees to 200 degrees in the circumferential direction of the valve body 201. The flow path 223 has regions E12 and E6. The flow path 224 is disposed in the range of 290 degrees to 300 degrees in the circumferential direction of the valve body 201. The flow path 224 has a region E11. By the areas E12 and E6 of the flow path 223 and the area E11 of the flow path 224, another fourth connection flow path 90 connected or blocked to the other first outlet flow path 47 is formed.

  The flow path 226 is disposed in the range of 90 degrees to 130 degrees in the circumferential direction of the valve body 201. The flow path 226 has regions E12, E6, E5, and E4. The flow path 227 is disposed in the range of 190 degrees to 210 degrees in the circumferential direction of the valve body 201. The flow path 227 has regions E10 and E11. The areas E12, E6, E5, and E4 of the flow path 226 and the areas E10 and E11 of the flow path 227 form a first connection flow path 68 connected or blocked to one first inlet flow path 44. ing.

  The flow path 228 is disposed in the range of 270 degrees to 310 degrees in the circumferential direction of the valve body 201. The flow path 228 has regions E12, E6, E5, and E4. The flow path 225 is disposed in the range of 10 degrees to 30 degrees in the circumferential direction of the valve body 201. The flow path 225 has regions E10 and E11. The areas E12, E6, E5, E4 of the flow path 228 and the areas E10, E11 of the flow path 225 form a first connection flow path 68 connected or blocked to the other first inlet flow path 44 There is.

  In the seventh example of the switching valve 13, the rotational force of the rotating shaft 234 is transmitted to the valve body 201, and the valve body 201 can rotate forward, backward, and stop. The partition wall 208 receives a load F <b> 1 in the direction of the axis A <b> 1 by the pressure of the coolant in the second inlet channel 45 and the third inlet channel 46. Further, the partition 209 receives a load F2 in the direction of the axis A1 according to the biasing force of the elastic member 239 and the pressure of the space 229. The load F1 is a load in a direction to move the first movable portion 202 away from the first disc portion 205. The load F2 is a load in a direction in which the first movable portion 202 approaches the first disc portion 205. When the load F1 is smaller than the load F2, the partition wall 208 is pressed against the first disc portion 205 as shown in FIG.

  On the other hand, the second movable portion 203 receives the load F3 in the direction of the axis A1 by the pressure of the first inlet channel 44. The second movable portion 203 receives a load F4 in the direction of the axis A1 according to the biasing force of the elastic member 239 and the pressure of the space 229. The load F3 is a load in a direction to move the second movable portion 203 away from the second disc portion 206. The load F4 is a load in a direction in which the second movable portion 203 approaches the second disc portion 206. When the load F3 is smaller than the load F4, the second movable portion 203 is pressed against the second disc portion 206 as shown in FIG.

  The operation when the switching valve 13 is in the state of FIG. 13 will be described. The second inlet channel 45 is connected or disconnected to the second connection channel 69, that is, the channels 214 and 215. The third inlet channel 46 is connected or blocked to the third connection channel 70, that is, the channels 212 and 213. The second outlet flow path 48 is connected to or disconnected from the fifth connection flow path 91, that is, the flow paths 216 and 217. The third outlet channel 49 is connected to or disconnected from the sixth connection channel 92, that is, the channels 218, 219, and 220. The predetermined first outlet flow path 47 is connected or blocked to the fourth connection flow path 90, that is, the flow paths 221 and 222. Another first outlet channel 47 is connected to or disconnected from the fourth connection channel 90, that is, the channels 223 and 224. The predetermined first inlet channel 44 is connected or blocked to the first connection channel 68, that is, the channels 226 and 227. The other first inlet channel 44 is connected to or disconnected from the first connection channel 68, that is, the channels 225 and 228.

  When the second inlet channel 45 is connected to the channel 214 or the channel 215, the coolant flows from the second inlet channel 45 into the space 210. When the second outlet channel 48 is connected to the channel 216 or the channel 217, the coolant flows out of the space 210 to the second outlet channel 48. When the third inlet channel 46 is connected to the channel 212 or the channel 213, the coolant flows into the space 210. When the third outlet channel 49 is connected to the channel 218 or the channel 219 or the channel 220, the coolant flows out of the space 210 to the third outlet channel 49.

  When the first inlet channel 44 is connected to any of the channels 225, 226, 227, 228, the coolant flows into the space 229. When the first outlet channel 47 is connected to any of the channels 221, 222, 223 and 224, the coolant flows out of the space 229 into the first outlet channel 47.

  On the other hand, when the second inlet channel 45 is shut off from the channels 214 and 215, the coolant in the second inlet channel 45 does not flow into the space 210. When the third inlet channel 46 is shut off from the channels 212 and 213, the coolant in the third inlet channel 46 does not flow into the space 210. When the second outlet flow path 48 is shut off from the flow paths 216 and 217, the coolant in the space 210 does not flow out to the flow paths 216 and 217. When the third outlet channel 49 is shut off from the channels 218, 219 and 220, the coolant in the space 210 does not flow out to the third outlet channel 49.

  When the predetermined first outlet flow channel 47 is shut off from the flow channels 221 and 222, the coolant in the space 229 does not flow out to the predetermined first outlet flow channel 47. When the other first outlet flow path 47 is shut off from the flow paths 223 and 224, the coolant in the space 229 does not flow out to the other first outlet flow path 47. When the predetermined first inlet channel 44 is shut off from the channels 226 and 227, the coolant in the predetermined first inlet channel 44 does not flow into the space 229. When the other first inlet channel 44 is shut off from the channels 225 and 228, the coolant in the other first inlet channel 44 does not flow into the space 229.

  Further, when the partition wall 208 is pressed against the first disk portion 205, the seal member 238 is pressed against the partition wall 209, and the seal member 238 shuts off the space 210 and the flow path 236. For this reason, the coolant in the space 210 does not flow into the flow path 236.

  On the other hand, when the load F1 becomes larger than the load F2, as shown in FIG. 14, the first movable portion 202 moves in the direction of the axis A1, and the partition wall 208 separates from the first disc portion 205. For this reason, a space 211 is formed between the first disc portion 205 and the partition wall 208. Then, regardless of whether or not the second inlet channel 45 is connected to the channels 214 and 215, and regardless of whether or not the third inlet channel 46 is connected to the channels 212 and 213, The coolant in the second inlet channel 45 and the third inlet channel 46 flows out to the second outlet channel 48 and the third outlet channel 49 via the space 210.

  In addition, when the first movable portion 202 moves away from the first disc portion 205, the seal member 238 separates from the partition 209. Therefore, a part of the coolant in the space 210 flows out of the flow path 236 into the flow path 235.

  Furthermore, when the load F3 becomes larger than the load F4, as shown in FIG. 14, the second movable portion 203 moves in the direction of the axis A1, the second movable portion 203 moves away from the second disc portion 206, and a space 230 is formed. Be done. Then, regardless of whether or not the first inlet channel 44 is connected to any of the channels 225, 226, 227, 228, the coolant in the first inlet channel 44 passes through the space 229 without changing the first inlet channel 44. It flows out to the outlet channel 47.

  The technical meaning of the items described in the embodiment will be described. The cylinder block 22, the cylinder head 23, and the cylinder part 24 are examples of a cooling object part. The cooling channels 27, 28, 29 are an example of a plurality of paths.

  As shown in FIG. 5, the position where the valve body 59 is stopped so that the second inlet passage 45 and the first outlet passage 47 are located between 180 degrees and 190 degrees, that is, the valve shown in FIG. The position P0 of the body 59 is an example of the predetermined position of the valve body 59. Further, as shown in FIG. 17, the position at which the valve body 201 is stopped is such that the second inlet passage 45 and the first outlet passage 47 are positioned between 240 degrees and 250 degrees. It is an example of a predetermined position.

  The coolant distribution device and the switching valve are not limited to the above embodiment, and various changes can be made without departing from the scope of the invention. The interval between the inlet flow channels provided in the housing and the interval between the outlet flow channels can be arbitrarily set other than the interval of 120 degrees and the interval of 180 degrees.

Reference Signs List 14 radiator 15 heater core 22 cylinder block 23 cylinder head 24 cylindrical portion 44 first inlet channel 45 second inlet channel 46 third inlet channel 47 first outlet channel 48 second outlet channel 49 third outlet channel 59 , 201 Valve body 68 first connection channel 69 second connection channel 70 third connection channel 90 fourth connection channel 91 fifth connection channel 92 sixth connection channel

Claims (5)

A coolant distribution device for distributing a coolant to a cooling target of an engine through a plurality of paths,
A first inlet channel, a second inlet channel, and a third inlet channel, which transport the cooling fluid from the part to be cooled and are arranged in parallel with each other;
Cooling fluid transported from at least one of the first inlet flow passage, the second inlet flow passage, and the third inlet flow passage is returned to the portion to be cooled, and the first fluid flow passages are disposed in parallel with one another. An outlet channel, a second outlet channel, and a third outlet channel;
A valve body rotatably provided within a predetermined angle range;
A first connection channel provided within the predetermined angle range with respect to the valve body and connected or blocked to the first inlet flow channel by rotation of the valve body;
A second connection flow path provided within the predetermined angle range with respect to the valve body and connected or blocked to the second inlet flow path by rotation of the valve body;
A third connection channel provided within the predetermined angle range with respect to the valve element and connected or blocked to the third inlet channel by rotation of the valve element;
A fourth connection channel which is provided within a predetermined angular range in the rotational direction of the valve body, and which is connected or blocked to the first outlet channel by the rotation of the valve body;
A fifth connection channel provided within the predetermined angle range with respect to the valve element and connected or blocked to the second outlet channel by rotation of the valve element;
A sixth connection channel provided within the predetermined angle range with respect to the valve element and connected or blocked to the third outlet channel by rotation of the valve element;
Have
The first connection channel, the second connection channel, the third connection channel, the fourth connection channel, the fifth connection channel, and the sixth connection channel are mutually connected.
When the valve body is at a predetermined position within the predetermined angle range, the first connection flow path and the first inlet flow path are blocked, and the second connection flow path and the second inlet flow path And the third connection channel and the third inlet channel are blocked,
The coolant distribution device, wherein the connection and blocking patterns of the fifth connection channel and the second outlet channel are different when the rotational direction of the valve element with respect to the predetermined position is different. In the coolant distribution device according to claim 1,
There is provided a housing rotatably accommodating the valve body,
The coolant distribution device, wherein the first inlet channel, the second inlet channel, the third inlet channel, the first outlet channel, the second outlet channel, and the third outlet channel are provided in the housing. . In the coolant distribution device according to claim 2,
The coolant distribution device, wherein the valve body is cylindrical. In the coolant distribution device according to claim 3,
At least one of the first connection passage to the sixth connection passage is provided on an outer peripheral surface of the valve body. In the coolant distribution device according to claim 3,
The valve body has an end face perpendicular to an axis which is a rotation center of the valve body,
At least one of the first connection passage to the sixth connection passage is provided at the end face.

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