WO2017065101A1 - Unité de climatisation pour véhicules - Google Patents

Unité de climatisation pour véhicules Download PDF

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Publication number
WO2017065101A1
WO2017065101A1 PCT/JP2016/079906 JP2016079906W WO2017065101A1 WO 2017065101 A1 WO2017065101 A1 WO 2017065101A1 JP 2016079906 W JP2016079906 W JP 2016079906W WO 2017065101 A1 WO2017065101 A1 WO 2017065101A1
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WO
WIPO (PCT)
Prior art keywords
air
door
heat exchanger
outlet
hot
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Application number
PCT/JP2016/079906
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English (en)
Japanese (ja)
Inventor
長野　秀樹
林　直人
Original Assignee
株式会社ヴァレオジャパン
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Application filed by 株式会社ヴァレオジャパン filed Critical 株式会社ヴァレオジャパン
Publication of WO2017065101A1 publication Critical patent/WO2017065101A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices

Definitions

  • the present invention relates to a vehicle air conditioning unit that can reliably mix hot air and cold air in a space for mixing hot air and cold air in a case.
  • Patent Document 1 discloses an automotive air conditioner having a butterfly door type guide door that is disposed in a space for mixing cold air and hot air separately from an air mix door and a blow mode switching door. Is disclosed.
  • the guide door of Patent Document 1 guides the air after the hot air merges with the cold air to the confluence of the cold air and the case. It is possible to guide to the top.
  • the ventilation resistance is increased by positioning the first and second door portions of the guide door along the flow of the cold air. It is also possible to suppress it.
  • Patent Document 1 since there is no provision for the angle between the direction of flowing the cool air and the direction of flowing the cool air, even if the warm air and the cool air are merged, It is possible that the air flow does not mix and flows in layers. For this reason, the difference between the temperature of the mixed air blown from the upper air outlet and the temperature of the mixed air blown from the lower air outlet cannot be reliably reduced.
  • the differential foot mode when mixed air blows out from the defrost outlet, there is a possibility that a cool differential phenomenon (a phenomenon in which cold air is blown toward the front window and condensation occurs on a part of the windshield). In the bi-level mode, passenger comfort may be impaired.
  • the present invention provides a vehicle air conditioner that can reliably reduce the difference between the temperature of the mixed air blown from the upper air outlet and the temperature of the mixed air blown from the lower air outlet when mixing the cold air and the hot air.
  • the purpose is to provide units.
  • An air conditioning unit for a vehicle includes an air flow path through which air flows, an upper air outlet that blows air that flows through the air flow path to the upper side of the vehicle interior, and air that flows through the air flow path into the vehicle interior.
  • a lower air outlet that blows out to the lower side, a heating heat exchanger that heats the air flowing through the air flow path to generate hot air, and the heating heat exchange that is disposed in the air flow path
  • An air mixing door that adjusts the ratio of the air to the heater and the air that bypasses the heating heat exchanger, and the direction in which the hot air flows and the direction in which the cold air flows that bypasses the heating heat exchanger are opposed to each other
  • an air flow direction adjusting device that adjusts the flow direction of one or both of the hot air and the cold air.
  • the air flow direction adjusting device includes, for example, both a cold air movable guide and a hot air movable guide, or one of a cold air movable guide and a hot air movable guide.
  • the hot air that has passed through the heating heat exchanger and the cold air that bypasses the heating heat exchanger can be merged from opposite directions, so that mixing of the hot air and the cold air is promoted,
  • the blown air mixed with the wind is blown simultaneously to the upper side and the lower side of the vehicle interior, the temperature difference between the blown air blown upward and the blown air blown downward can be reduced.
  • the air flow direction adjusting device adjusts the flow direction of one or both of the warm air and the cool air so that the cool air is shifted downward in the vehicle vertical direction from the warm air. It is a feature.
  • the air flow direction adjusting device adjusts the flow direction of one or both of the hot air and the cold air in conjunction with the adjustment of the ratio of the mixed air by the air mix door. It is characterized by.
  • the air flow direction adjusting device can be set so that the cold air and the hot air are in a flow opposite to each other.
  • the invention according to claim 4 is characterized in that the upper air outlet is a defrost air outlet or a vent air outlet, and the lower air outlet is a foot air outlet.
  • the upper air outlet is the defloat air outlet
  • the cold air that is not mixed with the hot air is not blown out toward the windshield, thereby preventing the occurrence of condensation.
  • the upper air outlet is the vent air outlet
  • the temperature difference between the air blown from the vent air outlet and the air blown from the foot air outlet is reduced, and passenger comfort can be improved.
  • the hot air that has passed through the heating heat exchanger and the cold air that has bypassed the heating heat exchanger can be merged from opposite directions, so When the blown air mixed with cold air and hot air is blown out simultaneously to the upper side and the lower side of the passenger compartment, the air blown to the upper side and the air blown to the lower side The temperature difference can be reliably reduced.
  • FIG. 1 is an explanatory diagram showing a schematic configuration of a vehicle air conditioning unit according to Embodiment 1 of the present invention.
  • FIG. 2 is an explanatory diagram showing the positions of the door and the movable guide when all the cool air bypasses the heat exchanger for heating in the full cool mode of the first embodiment.
  • FIG. 3 is an explanatory view showing the positions of the door and the movable guide when all the cool air is heated by the heating heat exchanger in the differential foot mode of the first embodiment.
  • FIG. 4 is an explanatory view showing the positions of the door and the movable guide when a part of the cold air is heated by the heating heat exchanger in the bi-level mode of the first embodiment.
  • FIG. 2 is an explanatory diagram showing the positions of the door and the movable guide when all the cool air bypasses the heat exchanger for heating in the full cool mode of the first embodiment.
  • FIG. 3 is an explanatory view showing the positions of the door and the movable guide when all the cool air is heated by
  • FIG. 5 is an explanatory diagram showing the positions of the door and the movable guide when a part of the cold air bypasses the heating heat exchanger in the differential foot mode of the first embodiment.
  • FIG. 6 is an explanatory diagram showing a schematic configuration of a vehicle air conditioning unit according to Embodiment 2 of the present invention.
  • FIG. 7 is an explanatory diagram showing the positions of the door and the movable guide when all the cool air bypasses the heat exchanger for heating in the full cool mode of the second embodiment.
  • FIG. 8 is an explanatory diagram showing the positions of the door and the movable guide when all the cool air is heated by the heating heat exchanger in the differential foot mode of the second embodiment.
  • FIG. 9 is an explanatory diagram showing the positions of the door and the movable guide when a part of the cold air bypasses the heating heat exchanger in the bi-level mode of the second embodiment.
  • the vehicle air-conditioning unit 1 is a semi-integrated unit composed of a blower unit (not shown) and an HVAC unit 2 and is housed in, for example, a center console portion of the vehicle.
  • the blower unit is a known unit, and rotates a fan by a motor to blow one or both of the inside air introduced from the inside air introduction port and the outside air introduced from the outside air introduction port to the HVAC unit 2. Further, the air blowing unit is arranged in any of the left and right directions of the vehicle with respect to the HVAC unit 2.
  • the HVAC unit 2 includes a case 3 in which an air channel 4 is formed, a cooling heat exchanger 5, a heating heat exchanger 6, and an air mix door 7 disposed in the air channel 4.
  • the cooling heat exchanger 5 is a known one, and is an evaporator or the like that cools the air sent from the blower unit, and is erected so that all the air flowing through the air flow path 4 passes through.
  • the cooling heat exchanger 5 is formed by alternately laminating a plurality of corrugated fins and tubes, for example, and has a tank at the end in the longitudinal direction of the tube. Are appropriately joined to form a refrigeration cycle.
  • the heating heat exchanger 6 is a publicly known one, such as a hot water heater core that heats the air cooled by the cooling heat exchanger 5.
  • the heating heat exchanger 6 is installed below the air flow path 4. Yes.
  • the heating heat exchanger 6 is formed, for example, by alternately laminating a plurality of corrugated fins and tubes, and has a tank at the end in the longitudinal direction of the tube. Joined to form a heat dissipation cycle.
  • the air mix door 7 is a known one, and is arranged between the cooling heat exchanger 5 and the heating heat exchanger 6 to adjust the ratio of the air passing through the heating heat exchanger 6 and the bypassing air.
  • the air mix door 7 is a slide door type in which the plate-like member 71 is displaced up and down along the guide rail 73 by the rotation of the gear 72.
  • the air mix door 7 is not limited to this slide door type, and although not shown, for example, what is called a rotary type, a cantilever door type, or a separate door type may be used.
  • the HVAC unit 2 includes, as part of the air flow path 4, a hot air flow path 8 through which the air (hot air) heated by the heating heat exchanger 6 passes, and air that bypasses the heating heat exchanger 6 ( A cool air flow path 9 through which the cool air passes, and an air mix chamber 10 provided on the downstream side of the warm air flow path 8 and the cool air flow path 9 where the warm air and the cool air merge, and the air flow path 4 through
  • a defrost air outlet 11 a vent air outlet 12, and a foot air outlet 16 all of which communicate with the downstream side of the air mix chamber 10.
  • the case 3 has an air guide middle wall 31 extending from the center in the vertical direction of the air mix door 7 to above the heat exchanger 6 for heating.
  • the hot air flow path 8 and the cold air flow path 9 are partitioned to prevent unintentional mixing of hot air and cold air upstream of the air mix chamber 10.
  • the defrost outlet 11 is formed above the HVAC unit 2, and the opening degree is adjusted by a defrost door 17 disposed in the vicinity of the defrost outlet 11.
  • the air that has passed through the defrost outlet 11 is blown out toward the windshield of the vehicle via a duct connected as necessary.
  • the vent outlet 12 is formed above the HVAC unit 2, and the opening degree is adjusted by a vent door 18 disposed in the vicinity of the vent outlet 12.
  • the air that has passed through the vent outlet 12 is blown out toward the upper body of an occupant who has boarded the vehicle via a duct connected as necessary.
  • the foot outlet 16 is formed below the HVAC unit 2, and the opening degree is adjusted by a foot door 20 disposed in the vicinity of the foot outlet 16.
  • the air that has passed through the foot outlet 16 is blown out toward the feet and lower body of an occupant who has boarded the vehicle via a duct connected as necessary.
  • the foot outlet 16 is formed at the lower end of the foot channel 15 communicating with the air mix chamber 10.
  • the foot channel 15 is partitioned from the warm air channel 8 by the air guide inner wall 32.
  • the defrost door 17, the vent door 18, and the foot door 20 are shown as butterfly doors, but a rotary door or a cantilever door may be used.
  • the air blown from the blower unit (not shown) to the HVAC unit 2 reaches the upstream side of the cooling heat exchanger 5 and passes through the cooling heat exchanger 5.
  • the ratio of the air passing through the heating heat exchanger 6 and the detouring air is adjusted, and mixing is appropriately performed in the air mix chamber 10 on the downstream side of the air mix door 7. Then, the air is blown into the vehicle interior via any one of the defrost outlet 11, vent outlet 12, and foot outlet 16 opened according to the outlet mode.
  • the present invention has the air flow direction adjusting device 21 in the region of the air mix chamber 10 of the case 3 or on the upstream side of the air mix chamber 10.
  • the air flow direction adjusting device 21 includes a cold air movable guide 22 and a hot air movable guide 23 as shown in FIGS. 1 to 5.
  • the cold wind movable guide 22 is called a flag door type or a cantilever door type including a rotation shaft 221 and one door main body 222 extending from the rotation shaft 221.
  • the cold wind movable guide 22 has the rotating shaft 221 positioned in the vicinity of the upper end of the air mix door 7 and the front end of the door body 222 obliquely toward the rear of the vehicle. Rotates in a range from a lower position (lower limit position) to a position near the lower end of the door body when the defrost outlet 11 of the defrost door 17 is fully opened, that is, a position obliquely upward (upper limit position) toward the rear of the vehicle. It is possible.
  • the cold wind movable guide 22 can be stopped at any position from the upper limit position to the lower limit position.
  • the rotating shaft 221 of the cold wind movable guide 22 is rotatably attached to the case 3 or rotated to a device (not shown) separate from the case 3 such as a baffle plate disposed in the air mix chamber 10. It is attached freely.
  • the door body 222 is, for example, a plate-like shape that is curved downward or refracted in the middle, and is easy to guide the air rearward and diagonally downward at the lower limit position. It is easy to guide to.
  • the hot air movable guide 23 is also referred to as a flag door type or a cantilever door type, which includes a rotation shaft 231 and a single door body 232 extending from the rotation shaft 231.
  • the hot air movable guide 23 is located in the air guide from the position (lower limit position) where the rotation shaft 231 is located above the downstream area of the hot air flow path 8 and the front end of the door body 232 is almost directly below. It is possible to rotate in the range up to the position of the upper end of the wall 32, that is, the diagonally downward position (upper limit position) toward the rear of the vehicle.
  • the hot air movable guide 23 can also be stopped at any position from the upper limit position to the lower limit position.
  • the rotating shaft 231 of the hot air movable guide 23 is attached to the case 3 so as to be rotatable, or to a device (not shown) separate from the case 3 such as a baffle plate disposed in the air mix chamber 10. It is attached so that it can rotate freely.
  • the door body 232 is, for example, a plate-like shape that is refracted or curved from the middle, and easily guides air forward and obliquely upward in the upper limit position, and guides air upward and downward from the vehicle in the lower limit position. It is easy to do.
  • the rotation of the movable guide 22 for cold air and the movable guide 23 for hot air is not shown in the figure, but by means of mechanical control elements such as a link mechanism or electrical control elements such as a control device. It can be linked.
  • the cold air movable guide 22 and the hot air movable are based on the positions of the air mix door 7 in the full cool mode, full hot mode, and mix mode.
  • the position of the guide 23 and the positions of the defrost door 17, the vent door 18, and the foot door 20 will be described below with reference to FIGS. 2 to 5, black arrows indicate the flow of cold air, white arrows indicate the flow of hot air, and mesh-shaped arrows indicate the flow of mixed air.
  • FIG. 2 shows a full cool mode in which only the cool air cooled by the cooling heat exchanger 5 flows into the air mix chamber 10, and the air mix door 7 receives the cool air cooled by the cooling heat exchanger 5. It is a position where the ratio of bypassing the heat exchanger 6 for heating is 100% (the lowest position of the guide rail 73). Further, the defrost door 17 is closed, the vent door 18 is opened, the foot door 20 is closed, and the blowing mode is a so-called vent mode.
  • the position of the cold air movable guide 22 is moved around the rotation shaft 221 in conjunction with the position of the air mix door 7.
  • the door main body 222 is located at the upper limit position, and the front end of the door main body 222 faces the rear of the vehicle and obliquely upward, and is located in a region deviated from the flow of cold air toward the vent outlet 12.
  • the position of the hot air movable guide 23 is moved around the rotation shaft 231 in conjunction with the position of the air mix door 7.
  • the door main body 232 In the full cool mode, the door main body 232 is in the upper limit position, and the front end of the door body 232 is located in a region away from the flow of cool air toward the vent outlet 12 while facing the upper end of the air guide middle wall 32 and facing the rear and obliquely downward. Is done.
  • the air blown to the air flow path 4 by the blower unit is cooled by the cooling heat exchanger 5, bypasses the heating heat exchanger 6, and the cold air flow path 9 and the air mix It passes through the chamber 10 and is blown out from the vent outlet 12 into the vehicle interior.
  • the ventilation resistance is not increased.
  • FIG. 3 shows a full hot mode in which only warm air heated by the heat exchanger 6 for heating flows into the air mix chamber 10, and the air mix door 7 is cool air cooled by the heat exchanger 5 for cooling. Is a position where the ratio of heating through the heat exchanger 6 for heating becomes 100% (the uppermost position of the guide rail 73). Further, the defrost door 17 is opened, the vent door 18 is closed, and the foot door 20 is opened, and the blowing mode is a so-called differential foot mode.
  • the cold air movable guide 22 In the full hot mode, the cold air movable guide 22 is located in a region where the door body 222 is at the lower limit position, the front end of the movable air guide 22 faces the rear of the vehicle, and deviates from the flow of hot air toward the defrost outlet 11.
  • the hot air movable guide 23 In the full hot mode, the hot air movable guide 23 is positioned such that the door main body 232 is at the lower limit position, the tip thereof is directed directly below, and the downstream of the hot air flow path 8 is divided into two.
  • the air blown to the air flow path 4 by the blower unit is cooled by the cooling heat exchanger 5 (or heat exchanged with the cooling heat exchanger 5 is performed. And heated by the heating heat exchanger 6, passes through the warm air flow path 8, partly blown out from the defrost outlet 11, and the rest from the foot outlet 16 into the vehicle interior.
  • the guide 22 for cold air is located in a region deviated from the flow of warm air toward the defrost outlet 11, the airflow resistance is not increased.
  • the hot air movable guide 23 is positioned so as to divide the downstream of the hot air flow path 8 into two, the hot air flowing through the hot air flow path 8 is defrosted without increasing the ventilation resistance. It is possible to divert the warm air toward the outlet 11 and the warm air toward the foot outlet 16.
  • the blowing mode can be changed to a so-called foot mode (not shown) by closing the defrost door 17, closing the vent door 18, and opening the foot door 20. Further, by opening the defrost door 17, closing the vent door 18, and closing the foot door 20, the blowing mode can be changed to a so-called defrost mode (not shown).
  • the cold air movable guide 22 has the door body 222 at the lower limit position
  • the hot air movable guide 23 has the door body 232 at the lower limit position.
  • the air blown to the air flow path 4 by the blower unit is cooled by the cooling heat exchanger 5 (or heat is not exchanged with the cooling heat exchanger 5). And is heated by the heat exchanger 6 for heating, passes through the hot air flow path 8, and partly passes between the hot air movable guide 23 and the air guide inner wall 32 and flows for the foot. The air flows into the passage 15, and the remainder passes through the air mix chamber 10 and flows into the foot passage 15, and is blown out from the foot outlet 16 into the vehicle interior.
  • the hot air movable guide 23 is positioned so as to open the space between the rotary shaft 231 and the upper end of the air guide middle wall 32, the air in the portion from the hot air flow path 8 to the foot flow path 15.
  • the flow path 4 can be shortened to suppress an increase in ventilation resistance.
  • the air blown to the air flow path 4 by the blower unit is cooled by the cooling heat exchanger 5 (or without being exchanged with the cooling heat exchanger 5).
  • the air mix chamber 10 is heated by the heating heat exchanger 6 and passes through the hot air flow path 8 and partly passes between the hot air movable guide 23 and the air guide inner wall 32.
  • the remainder flows into the air mix chamber 10 without passing between the air guide middle wall 32 and blown out from the defrost outlet 11 into the vehicle interior.
  • the cold air movable guide 22 is located in a region deviated from the flow of the warm air toward the defrost outlet 11, so that the ventilation resistance is not increased.
  • the hot air movable guide 23 is positioned so as to open the space between the rotary shaft 231 and the upper end of the air guide middle wall 32, the air flow path in the portion from the hot air flow path 8 to the defrost outlet 11. 4 can be increased to suppress an increase in ventilation resistance.
  • FIG. 4 shows a mixed mode in which both cold air and hot air flow into the air mix chamber 10.
  • the air mix door 7 has a ratio of 50 where the cold air is heated through the heating heat exchanger 6. % (For example, 60%) is a position (position between the guide rails 73). Further, the defrost door 17 is closed, the vent door 18 is opened, the foot door 20 is opened, and the blowing mode is a so-called bi-level mode.
  • the cold air movable guide 22 is positioned in the region of the air mix chamber 10 with the door main body 222 being at the lower limit position or a position near the lower limit, with the tip thereof facing the rear of the vehicle.
  • the hot air movable guide 23 has the door main body 232 at the upper limit position, and its front end is in contact with the upper end of the air guide middle wall 32 and faces rearward and obliquely downward, and the air guide middle wall 32 is in front of the vehicle. And it is extended diagonally upward.
  • the air blown to the air flow path 4 by the blower unit is cooled by the cooling heat exchanger 5, and a part of the air bypasses the heating heat exchanger 6,
  • the air flows into the air mix chamber 10 through the passage 9, and the rest is heated by the heating heat exchanger 6, flows into the air mix chamber 10, and is blown out from the vent outlet 12 and the foot outlet 16 into the vehicle interior.
  • the cold wind movable guide 22 is located in the region of the air mix chamber 10, the flow direction of the cold wind is set to the rear and obliquely downward of the vehicle (black arrow in FIG. 4).
  • the hot air movable guide 23 extends the air guide middle wall 32 toward the vehicle front and obliquely upward, the flow direction of the warm air is set to the vehicle front and obliquely upward (the white lines in FIG. 4). Arrow). As a result, it is possible to make the flow of the hot air flowing into the air mix chamber 10 and the flow of the cold air face each other.
  • the angle of the flow of the warm air flowing into the air mix chamber 10 and the flow of the cold air is 90 degrees or more and 180 degrees.
  • the angle is preferably less than 130 degrees, and more preferably from 130 degrees to less than 180 degrees.
  • the position of either or both of the cold air movable guide 22 and the hot air movable guide 23 is adjusted as appropriate, and the direction of the cold air flow is changed with respect to the direction of the hot air flowing into the air mix chamber 10. It is preferable to shift the vehicle downward in the vertical direction.
  • the cold air and the hot air are reliably mixed, the temperature difference between the air blown from the vent outlet 12 and the foot outlet 16 is reduced, and the vehicle occupant is prevented from becoming uncomfortable.
  • FIG. 5 shows a mixed mode in which both cold air and hot air flow into the air mix chamber 10, and the air mix door 7 has a ratio of 50 where the cold air is heated through the heating heat exchanger 6.
  • % Is a position (position between the guide rails 73) that is larger than 70% (for example, 70%).
  • the defrost door 17 is opened, the vent door 18 is closed, and the foot door 20 is opened, and the blowing mode is a so-called differential foot mode.
  • the cold air movable guide 22 is positioned in the region of the air mix chamber 10 with the door body 222 in the lower limit position or a position in the vicinity of the lower limit and the front end facing the rear of the vehicle.
  • the hot air movable guide 23 has the door main body 232 at the upper limit position, and its front end is in contact with the upper end of the air guide middle wall 32 and faces rearward and obliquely downward, and the air guide middle wall 32 is in front of the vehicle. And it is extended diagonally upward.
  • the air blown out from the defrost outlet 11 is prevented from being blown out of cold air, and inconveniences such as condensation on the windshield can be avoided.
  • the air flow direction adjusting device 21 includes both the cold air movable guide 22 and the hot air movable guide 23.
  • the air flow direction adjusting device 21 may be the movable guide 22 for cold air or It may be configured by only one of the hot air movable guides 23.
  • the HVAC unit 2 of the second embodiment houses a cooling heat exchanger similar to the cooling heat exchanger 5 of the HVAC unit 2 of the first embodiment in the air flow path 4.
  • the HVAC unit 2 of the vehicle air conditioning unit 1 according to the second embodiment will be described.
  • symbol similar to the vehicle air conditioning unit 1 of Example 1 is attached
  • the HVAC unit 2 of the second embodiment has two vent outlets 12 and 13, and the vent outlet 12 and the vent outlet 13 are provided side by side along the longitudinal direction of the vehicle. Different from the HVAC unit 2.
  • the vent outlet 12 is, for example, a side vent outlet
  • the vent outlet 13 is, for example, a center vent outlet (hereinafter, the vent outlet 12 is referred to as a side vent outlet, and the vent outlet 13 is referred to as a center vent outlet).
  • the opening degree of the side vent outlet 12 is adjusted by a side vent door 18 disposed in the vicinity of the opening end.
  • the opening degree of the center vent outlet 13 is adjusted by a center vent door 19 disposed in the vicinity of the opening end.
  • the side vent door 18 and the center vent door 19 are of a butterfly type.
  • the air flow direction adjusting device 21 of the HVAC unit 2 has an auxiliary movable guide 24 in addition to the cold air movable guide 22 and the hot air movable guide 23, and the auxiliary air movable from the hot air movable guide 23.
  • An intermediate partition 33 extending toward the guide 24 is provided.
  • the intermediate partition 33 may be a part of the case 3 or a part of an instrument (not shown) separate from the case 3 such as a baffle plate.
  • the movable guide 22 for cold air is substantially the same as the movable guide 22 for cold air in the first embodiment with respect to the position and the upper and lower limits of rotation of the door body 222.
  • the movable guide 23 for hot air is as follows. Further, the position of the hot air movable guide 23 and the upper and lower limits of the rotation of the door body 232 are different.
  • the hot air movable guide 23 is positioned at a position where the rotary shaft 231 is close to the intermediate partition portion 33 in the downstream area of the hot air flow path 8, and the front end of the door main body 232 is the position of the vehicle. It is possible to rotate in a range from a position obliquely downward (lower limit position) toward the front to a position where the opening 34 is closed, that is, a position obliquely downward (upper limit position) toward the rear of the vehicle. Yes.
  • the hot air movable guide 23 can be stopped at any position from the upper limit position to the lower limit position.
  • the door body 232 has a plate-like shape that is refracted or curved from the middle, for example, and easily guides the warm air that has risen from below the vehicle at the upper limit position to the front and obliquely upward of the vehicle. While being divided into the opening 34 and the air mix chamber 10, it is easy to guide to both.
  • the auxiliary movable guide 24 provided in the second embodiment is referred to as a flag door type or a cantilever door type including a rotation shaft 241 and one door body 242 extending from the rotation shaft 241.
  • the auxiliary movable guide 24 is configured such that the rotary shaft 241 is above the rotary shaft 231 of the hot air movable guide 23 in the downstream area of the hot air flow path 8 and the side vent outlet 12 and the center vent outlet. 13 and the front end of the door main body 242 from the upper end of the intermediate partition 33, that is, from the rear and diagonally lower position (lower limit position), when the center vent outlet 13 of the center vent door 19 is fully opened. It is possible to rotate in a range up to a position facing the end of the door body, that is, a position slightly rearward and slightly downward (upper limit position).
  • the rotating shaft 241 of the auxiliary movable guide 24 is rotatably attached to the case 3 or is freely rotatable to an instrument (not shown) separate from the case 3 such as a baffle plate disposed in the air mix chamber 10. Is attached.
  • the door main body 242 has, for example, a plate shape that is curved downward or refracted in the middle.
  • the rotation of the cold air movable guide 22, the hot air movable guide 23, and the auxiliary movable guide 24 is not shown in the figure, but by a mechanical control element such as a link mechanism or an electrical control element such as a control device. It can be interlocked with the air mix door 7.
  • the cold air movable guide 22 and the hot air movable guide are based on the positions of the air mix door 7 in the full cool mode, full hot mode, and mix mode.
  • the positions of the guide 23 and the auxiliary movable guide 24 and the positions of the defrost door 17, the side vent door 18, the center vent door 19, and the foot door 20 will be described below with reference to FIGS. 7 to 9, black arrows represent the flow of cold air, white arrows represent the flow of hot air, and mesh-shaped arrows represent the flow of mixed air.
  • FIG. 7 shows a full cool mode in which only the cool air cooled by the cooling heat exchanger 5 flows into the air mix chamber 10, and the air mix door 7 receives the cool air cooled by the cooling heat exchanger 5. It is a position where the ratio of bypassing the heat exchanger 6 for heating is 100% (the lowest position of the guide rail 73). Further, the defrost door 17 is closed, the side vent door 18 is opened, the center vent door 19 is opened, the foot door 20 is closed, and the blowing mode is a so-called vent mode.
  • the movable guide 22 for cold air in the full cool mode is the same as that of the first embodiment, and thus the description thereof is omitted. Further, the position of the hot air movable guide 23 in the full cool mode has a difference in that the opening 34 abuts on the upper end of the air guide inner wall 32 in the first embodiment, whereas the opening 34 is closed in the second embodiment. Since it is located so that the cold air does not flow through the foot channel 15, the description is omitted because it is the same as the first embodiment.
  • the position of the auxiliary movable guide 24 is moved around the rotation shaft 241 in conjunction with the position of the air mix door 7. In the full cool mode, the door body 242 is at the upper limit position, and the space between the front end and the intermediate partition 33 is opened.
  • the air blown to the air flow path 4 by the blower unit is cooled by the cooling heat exchanger 5, bypasses the heating heat exchanger 6, and the cold air flow path 9 and the air mix It passes through the chamber 10 and is blown out from the side vent outlet 12 and the center vent outlet 13 into the vehicle interior.
  • the auxiliary movable guide 24 opens the space between the intermediate partition portion 33, an increase in ventilation resistance is suppressed with respect to the cold air from the air mix chamber 10 toward the center vent outlet 13.
  • FIG. 8 shows a full hot mode in which only the warm air heated by the heating heat exchanger 6 flows into the air mix chamber 10, and the air mix door 7 is cooled by the cooling heat exchanger 5. Is a position where the ratio of heating through the heat exchanger 6 for heating becomes 100% (the uppermost position of the guide rail 73). Further, the defrost door 17 is opened, the side vent door 18 is closed, the center vent door 19 is closed, the foot door 20 is opened, and the blowing mode is a so-called differential foot mode.
  • the position of the cold wind movable guide 22 in the full hot mode is the same as that in the first embodiment, the description thereof is omitted. Further, the position of the hot air movable guide 23 in the full hot mode is open between the vicinity of the upper end portion of the air guide middle wall 32 in the first embodiment, whereas the opening 34 is opened in the second embodiment. Although there is a difference, since it is the same as the first embodiment in that it is in a position where the downstream side of the hot air flow path 8 is divided into two, description thereof is omitted.
  • the position of the auxiliary movable guide 24 is moved around the rotation shaft 241 in conjunction with the position of the air mix door 7. In the full hot mode, the door main body 242 is at the upper limit position, and the space between the front end and the intermediate partition 33 is opened.
  • the air blown to the air flow path 4 by the blower unit is cooled by the cooling heat exchanger 5 (or heat exchanged with the cooling heat exchanger 5 is performed. And heated by the heating heat exchanger 6, passes through the warm air flow path 8, partly blown out from the defrost outlet 11, and the rest from the foot outlet 16 into the vehicle interior.
  • the auxiliary movable guide 24 opens between the intermediate partition portion 33, a warm air flow path from the air mix chamber 10 to the foot flow path 15 can be secured, and an increase in ventilation resistance is suppressed. .
  • the blowing mode can be set to a so-called foot mode by closing the defrost door 17, closing the side vent door 18, closing the center vent door 19, and opening the foot door 20 (not shown).
  • the blowing mode can be changed to a so-called defrosting mode (not shown) by opening the defrost door 17, closing the side vent door 18, closing the center vent door 19, and closing the foot door 20.
  • the auxiliary movable guide 24 has the door body 242 at the upper limit position.
  • the air blown to the air flow path 4 by the blower unit is cooled by the cooling heat exchanger 5 (or heat is not exchanged with the cooling heat exchanger 5). And is heated by the heat exchanger 6 for heating, passes through the hot air flow path 8, and partly passes between the hot air movable guide 23 and the air guide inner wall 32 and passes through the foot flow path. 15, and the remainder passes through the air mix chamber 10 and flows into the foot channel 15, and is blown out from the foot outlet 16 into the vehicle interior.
  • the auxiliary movable guide 24 opens between the intermediate partition portion 33 and the door body 242, the warm air flowing into the air mix chamber 10 can secure the warm air flow path toward the foot flow path 15, An increase in ventilation resistance can be suppressed.
  • the air blown to the air flow path 4 by the blower unit is cooled by the cooling heat exchanger 5 (or without being exchanged with the cooling heat exchanger 5). And heated by the heat exchanger 6 for heating, passes through the warm air flow path 8, and partly passes between and flows into the air mix chamber 10, and the rest is connected to the air guide inner wall 32. The air flows into the air mix chamber 10 without passing through the air and is blown out from the defrost outlet 11 into the vehicle interior.
  • the auxiliary movable guide 24 is located in a region deviated from the flow of warm air from the warm air flow path 8 toward the defrost outlet 11, so that the ventilation resistance is not increased.
  • FIG. 9 shows a mixed mode in which both cold air and hot air flow into the air mix chamber 10.
  • the air mix door 7 has a ratio of 50 where the cold air is heated by passing through the heat exchanger 6 for heating. % (For example, 60%) is a position (position between the guide rails 73). Further, the defrost door 17 is closed, the side vent door 18 is opened, the center vent door 19 is opened, the foot door 20 is opened, and the blowing mode is a so-called bi-level mode.
  • the position of the cold wind movable guide 22 in the mixed mode is the same as that in the first embodiment, the description thereof is omitted. Further, the position of the hot air movable guide 23 in the full cool mode is different from that of the first embodiment in contact with the upper end portion of the air guide inner wall 32, but in the second embodiment, the opening 34 is closed. In the point which is located so that the warm air before being mixed with the cold air does not flow in the flow passage 15 for the foot, it is the same as the first embodiment, and thus the description is omitted.
  • the position of the auxiliary movable guide 24 is moved around the rotation shaft 241 in conjunction with the position of the air mix door 7. In the mix mode, the door main body 242 is at the lower limit position, and the space between the front end and the intermediate partition 33 is closed.
  • the air blown to the air flow path 4 by the blower unit is cooled by the cooling heat exchanger 5, and a part of the air bypasses the heating heat exchanger 6.
  • the air flows into the air mix chamber 10 through the wind passage 9, and the remainder is heated by the heating heat exchanger 6 and flows into the air mix chamber 10, and the side vent outlet 12, the center vent outlet 13, and the foot outlet The air is blown out from the outlet 16 into the vehicle interior.
  • the auxiliary movable guide 24 is at the lower limit position and closes between the tip and the intermediate partition 33, the portion where the cold air and the warm air merged in the air mix chamber 10 flow out is limited (FIG. 9).
  • the air flowing out from the air mix chamber 10 can be used only in the region between the side vent outlet 12 and the center vent outlet 13), and the mixing of the cold air and the hot air can be promoted. .
  • a temperature difference can be reduced about the air which blows off from the blower outlet formed in the front and back and the different position of the upper and lower sides of a vehicle.
  • the air flow direction adjusting device 21 includes the cold air movable guide 22, the hot air movable guide 23, and the auxiliary movable guide 24.
  • the air flow direction adjusting device 21 can be connected to the movable guide 22 for cold air. It may be either a combination with the auxiliary movable guide 24 or a combination of the hot air movable guide 23 and the auxiliary movable guide 24.
  • the blower unit is disposed in any of the left and right directions of the vehicle with respect to the HVAC unit 2, but may be disposed above the HVAC unit 2.
  • the heating heat exchanger 6 is a hot water heater core, it may be an electric heating type or a refrigerant radiator, or may be used in combination with a hot water heater core.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

Le problème selon l'invention consiste à fournir une unité de climatisation pour des véhicules qui permet une réduction fiable de la différence entre la température de l'air mélangé soufflé à partir d'un orifice de soufflage supérieur et la température de l'air mélangé soufflé à partir d'un orifice de soufflage inférieur lorsque de l'air froid et de l'air chaud sont mélangés. La solution selon l'invention porte sur un mode dans lequel l'air mélangé composé d'un mélange d'air chaud et d'air froid est soufflé à la fois à partir d'un orifice de soufflage de dégivrage (11) ou d'un orifice de soufflage de ventilation (12) et d'un orifice de soufflage au niveau des pieds (16), la direction de flux de l'air froid et/ou de l'air chaud étant réglée par un guide mobile (22) pour l'air froid et un guide mobile (23) pour l'air chaud d'un dispositif de réglage de direction de flux d'air (21) de sorte que la direction de flux de l'air chaud passant à travers un échangeur de chaleur de chauffage (6) soit dirigée dans la direction de flux de l'air froid en contournant l'échangeur de chaleur de chauffage (6).
PCT/JP2016/079906 2015-10-14 2016-10-07 Unité de climatisation pour véhicules WO2017065101A1 (fr)

Applications Claiming Priority (2)

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JP2015202549A JP2017074827A (ja) 2015-10-14 2015-10-14 車両用空調ユニット
JP2015-202549 2015-10-14

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WO2017065101A1 true WO2017065101A1 (fr) 2017-04-20

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023139394A (ja) * 2022-03-22 2023-10-04 株式会社ヴァレオジャパン 車両用空調ユニット

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10203134A (ja) * 1997-01-24 1998-08-04 Calsonic Corp 車両用空気調和装置のヒータユニット
JP2005014708A (ja) * 2003-06-25 2005-01-20 Denso Corp 車両用空調装置
JP2010155497A (ja) * 2008-12-26 2010-07-15 Denso Corp 車両用空調装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10203134A (ja) * 1997-01-24 1998-08-04 Calsonic Corp 車両用空気調和装置のヒータユニット
JP2005014708A (ja) * 2003-06-25 2005-01-20 Denso Corp 車両用空調装置
JP2010155497A (ja) * 2008-12-26 2010-07-15 Denso Corp 車両用空調装置

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