WO2012157183A1 - Air conditioning device for vehicle - Google Patents

Air conditioning device for vehicle Download PDF

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Publication number
WO2012157183A1
WO2012157183A1 PCT/JP2012/002458 JP2012002458W WO2012157183A1 WO 2012157183 A1 WO2012157183 A1 WO 2012157183A1 JP 2012002458 W JP2012002458 W JP 2012002458W WO 2012157183 A1 WO2012157183 A1 WO 2012157183A1
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WO
WIPO (PCT)
Prior art keywords
air
passage
hot air
warm
hot
Prior art date
Application number
PCT/JP2012/002458
Other languages
French (fr)
Japanese (ja)
Inventor
正幸 中西
Original Assignee
株式会社デンソー
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Priority to DE112012002115.0T priority Critical patent/DE112012002115T5/en
Priority to CN201280023729.XA priority patent/CN103534113B/en
Priority to BR112013028166A priority patent/BR112013028166A2/en
Priority to KR1020137030865A priority patent/KR101445658B1/en
Publication of WO2012157183A1 publication Critical patent/WO2012157183A1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007Combined heating, ventilating, or cooling devices
    • B60H1/00021Air flow details of HVAC devices
    • B60H1/00064Air flow details of HVAC devices for sending air streams of different temperatures into the passenger compartment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007Combined heating, ventilating, or cooling devices
    • B60H1/00021Air flow details of HVAC devices
    • B60H2001/00078Assembling, manufacturing or layout details
    • B60H2001/00092Assembling, manufacturing or layout details of air deflecting or air directing means inside the device

Definitions

  • the present disclosure relates to an air mix type vehicle air conditioner that mixes cold air and hot air.
  • Patent Document 1 discloses a technique for improving the mixing of cold air and hot air in a conventional vehicle air conditioner.
  • a warm air passage extending from the heater core to the air mix chamber, and an outlet that bypasses the air mix chamber at one end from the heater core and is located on the opposite side of the outlet from the warm air passage.
  • a warm air bypass passage having The hot air flowing through the hot air bypass passage is U-turned to blow the hot air into the cold air passage, thereby sandwiching the cold air passage between the hot air passage and the hot air bypass passage.
  • Patent Document 2 discloses a technique for improving the mixing of cold air and hot air at a differential outlet of a conventional vehicle air conditioner.
  • a guide member that disperses warm air in the width direction is provided at the differential outlet.
  • the present disclosure has been made in view of the foregoing points, and an object thereof is to provide a vehicle air conditioner that can improve the mixing of cold air and hot air in an air conditioning case with a simple configuration.
  • a vehicle air conditioner includes an air conditioning case that forms an air passage therein, a blower that blows air into the air conditioning case, and air that is provided in the air conditioning case and is blown by the blower.
  • the cool air passage section through which the cool air that has passed through the cooling heat exchanger flows, the hot air passage section that is formed in the air conditioning case and through which the hot air passes through the heat exchanger for heating, and the air conditioning case are provided.
  • An air mix unit that adjusts the amount of air that passes through the heat exchanger for heating and the amount of air that flows through the cool air passage unit, and is provided in the air conditioning case.
  • the mixing chamber is configured so that the warm air and the cold air are merged at a merging portion located on the upstream side in the mixing chamber.
  • the cold air passage portion guides the cold air to intersect the warm air at the junction.
  • the hot air passage portion is a passage formed inside a hot air confluence passage that guides the hot air to the confluence portion and a tubular body that is arranged so as to cross the confluence portion and extends in the confluence direction of the hot air,
  • a hot air tunnel passage that guides the hot air flowing through the body to the downstream side in the direction of the hot air merging with respect to the merging portion, and a passage that communicates with the mixing chamber and the hot air tunnel passage.
  • the hot air flows in, and the hot air diffusion passage extends in the direction in which the merged portion and the cylindrical body are arranged and intersects the flow direction of the cold air.
  • the hot air diffusion passage extends in the arrangement direction and the flow direction of the cold air, extends in the arrangement direction and the flow direction of the cold air, and extends in the arrangement direction and the flow direction of the cold air.
  • a second wall portion that is positioned at a downstream side in the wind merging direction and an upstream side in the cold air flow direction between the first wall portion and the second wall portion, extending in the arrangement direction and the hot air merging direction.
  • the hot air diffusion passage is configured to guide the hot air flowing from the hot air tunnel passage in a direction along the first wall portion and the second wall portion and to guide to the mixing chamber.
  • the hot air that has flowed down the hot air merging passage joins the cold air that has flowed through the cold air passage portion at the merging portion. Further, the warm air flowing down the warm air tunnel passage is diffused in the direction of alignment at the downstream side of the joining portion of the warm air in the joining portion by the warm air diffusion passage, and is guided to the mixing chamber. Since the hot air diffusion passage is partitioned by the joining portion and the first wall portion, the hot air diffusion passage is guided to the mixing chamber without joining the cool air at the joining portion.
  • the cold air that has flowed down the cold air passage portion merged with the warm air from the upstream side in the merging direction that flowed through the warm air confluence passage at the confluence, and further flowed through the hot air diffusion passage in the mixing chamber. It is sandwiched between warm air from the downstream side of the hot air merging direction. Further, the temperature at the upstream side in the merging direction in the merging portion becomes higher due to the merging hot air due to the merging at the merging portion of the warm air and the cold air flowing through the warm air merging passage. The wind is difficult to mix.
  • the warm air flowing down the warm air diffusion passage flows down the merging direction downstream side of the merging portion and is guided to the mixing chamber, it can be mixed with the cold air having a low temperature in the mixing chamber. Therefore, the temperature distribution can be made uniform in the merging direction and the arrangement direction. And it can blow out toward the vehicle interior from a blowing opening part by making mixed air into an air conditioning wind. Therefore, the mixed conditioned air can flow down regardless of the position of the blowout opening.
  • the vehicle air conditioner according to the present disclosure can improve the mixability of the cold air and the hot air in the air conditioning case with a simple configuration.
  • a plurality of cylindrical bodies may be provided at intervals in the arrangement direction.
  • the hot air can be distributed in the arrangement direction and sent from the hot air tunnel passage to the hot air diffusion passage.
  • the warm air from the tail warm air merging passage can be distributed in the direction of alignment by the interval between the adjacent cylindrical bodies at the portion where the warm air and the cold air merge, and can be guided to the merging portion. Thereby, the mixing property in the alignment direction can be further improved.
  • a plurality of guide plates for guiding the cold air and the hot air to the mixing chamber may be provided between the plurality of cylindrical bodies in the joining portion.
  • FIG. 2 is a sectional view taken along line II-II in FIG. It is a perspective view which shows a warm air grid. It is sectional drawing of the vehicle air conditioner in the state of bilevel mode. It is sectional drawing of the vehicle air conditioner in the state of foot mode. It is sectional drawing of the vehicle air conditioner in the state of foot / diff mode. It is sectional drawing of the vehicle air conditioner in the state of a defroster mode.
  • FIG. 1 shows a cross-sectional view of a vehicle air conditioner 10 according to an example of an embodiment of the present disclosure.
  • the vehicle air conditioner 10 includes an indoor air conditioning unit (not shown).
  • the indoor air conditioning unit is disposed inside a vehicle instrument panel (not shown) at the foremost part of the vehicle interior.
  • the indoor air conditioning unit has a blower unit (not shown) and an air conditioning main unit 11 shown in FIG.
  • the air conditioning main unit 11 is arranged at the approximate center in the left-right direction of the vehicle.
  • the blower unit is arranged with a predetermined dimension away from the air conditioning body unit 11 on the passenger seat side.
  • the blower unit has an inside / outside air switching box and a blower for switching and introducing the inside and outside air, and the introduced air is blown to the air conditioning main unit 11 by the blower.
  • the air conditioning body unit 11 houses an evaporator 13 and a heater core 14 in an air conditioning case 12.
  • the air conditioning case 12 has an air passage 15 formed therein and is made of a resin material.
  • a blower unit is provided in front of the air conditioning case 12 (left side in FIG. 1), and air is blown into the air conditioning case 12 from the blower unit.
  • the evaporator 13 is a cooling heat exchanger that cools air by exchanging heat between the refrigerant passing through the evaporator 13 and the air flowing through the air conditioning case 12.
  • the evaporator 13 is arrange
  • the heater core 14 is a heat exchanger for heating that heats air by exchanging heat between a refrigerant passing through the inside, for example, engine coolant and air that has passed through the evaporator 13. Therefore, the air that has passed through the heater core 14 flows as warm air.
  • the heater core 14 is disposed behind the evaporator 13 (on the right side in FIG. 1) and below the air conditioning case 12.
  • a hot air merging passage 21 through which hot air from the heater core 14 flows is formed on the rear side of the heater core 14 in the air conditioning case 12.
  • a cold air passage 16 is formed above the evaporator 13 in the air conditioning case 12 so as to bypass (bypass) the heater core 14 and allow the cold air from the evaporator 13 to flow.
  • the cold air passage 16 extends upward from the evaporator 13.
  • an air mix door 17 that adjusts the ratio of the amount of air flowing through the heater core 14 and the amount of air flowing through the cold air passage 16 is disposed.
  • the air mix door 17 is comprised by the rotation door, for example.
  • Air that is a mixing chamber that mixes cold air from the cold air passage 16 and hot air from the heater core 14 on the rear side of the evaporator 13 in the air conditioning case 12 and downstream of the heater core 14 to collide with each other.
  • a mix chamber 18 is formed.
  • a plurality of outlet openings 31 to 33 are provided for blowing the conditioned air mixed in the air mix chamber 18 toward a plurality of locations in the passenger compartment. Accordingly, the blowout openings 31 to 33 are provided on the air flow downstream side of the air mix chamber 18.
  • a defroster opening 31, a face opening 32, and a foot opening 33 are provided as the plurality of blowing openings 31 to 33.
  • the defroster opening 31 is for blowing conditioned air to the inner surface of the front window glass.
  • the face opening 32 is for blowing out the conditioned air toward the passenger's upper body.
  • the foot opening 33 is for blowing the conditioned air toward the feet of the occupant.
  • the air conditioning case 12 is provided with a blow mode door that selects and opens and closes a plurality of blow openings 31 to 33.
  • a face / foot door 34 that opens and closes the face opening 32 and the foot opening 33 and a defroster door 35 that opens and closes the defroster opening 31 are provided.
  • the face / foot door 34 and the defroster door 35 are constituted by a plate door having a plate-like door main body for opening and closing the blowout openings 31 to 33 and a rotating shaft for rotating the door main body.
  • FIG. 2 is a sectional view taken along line II-II in FIG.
  • FIG. 3 is a perspective view showing the warm air grid 20.
  • the hot air grid 20 is provided to mix cold air and hot air.
  • FIG. 2 for easy understanding, the flow of hot air is indicated by an arrow, and the illustration of the flow of cold air is omitted.
  • FIG. 3 for easy understanding, the flow of hot air is indicated by solid arrows, and the flow of cold air is indicated by broken arrows.
  • the direction crossing the flow direction X vertical direction in FIG.
  • the hot air merging direction Y (FIG. 1 and the direction perpendicular to the flow direction X and the warm air merging direction Y may be referred to as an alignment direction Z (a direction perpendicular to the paper surface of FIG. 1).
  • the hot air grid 20 is provided between the air mix door 17 and the air mix chamber 18 in the air conditioning case 12.
  • the hot air grid 20 is formed integrally with the same resin material as the air conditioning case 12, for example, or formed separately from the air conditioning case 12 and then fixed to the air conditioning case 12.
  • the hot air grid 20 is provided at the exit of the hot air merging passage 21 through which the hot air from the heater core 14 flows.
  • the hot air grid 20 is provided so as to cross the cold air passage 16.
  • the hot air grid 20 is a portion where the flow direction X of the cold air from the cold air passage 16 intersects with the direction of the hot air blowing from the hot air merging passage 21, and the air is more air than the movable range of the blow mode door.
  • the intersecting portion is a merged portion 18a located on the upstream side in the air mix chamber 18, and is a portion where hot air and cold air merge.
  • the blowing direction of the cold air from the cold air passage 16 to the hot air grid 20 is the upper side in FIG.
  • the blowing direction of the hot air from the hot air confluence passage 21 to the cold air passage 16 is the left side in FIG. Therefore, the blowing direction of the cold air from the cold air passage 16 and the blowing direction of the hot air from the hot air merging passage 21 intersect each other. Therefore, the cold air passage 16 guides the cold air to intersect the warm air at the junction 18a.
  • the hot air grid 20 has a hot air tunnel passage 23 and a hot air diffusion passage 24 as a passage independent of the cold air passage 16 through which a part of the hot air flowing down the hot air confluence passage 21 passes.
  • the hot air tunnel passage 23 is disposed so as to cross the joining portion 18a.
  • the hot air tunnel passage 23 is a passage formed inside the cylindrical body 23a extending in the hot air merging direction Y.
  • the warm air tunnel passage 23 guides the warm air flowing in the cylindrical body 23a to the downstream side in the warm air merging direction Y with respect to the merging portion 18a.
  • the hot air tunnel passage 23 crosses in the hot air merging direction Y so as to block a part of the merging portion 18a, and is connected to the hot air diffusion passage 24 located on the other side of the cold air passage 16 in the hot air merging direction Y.
  • Guide hot air A plurality of the cylindrical bodies 23a are provided in the warm air merging direction Y, and are provided at intervals in the arrangement direction Z (left and right direction in FIG. 2). In the present embodiment, three cylindrical bodies 23a are provided.
  • the three hot air tunnel passages 23 are respectively provided at the center of the arrangement direction Z and at both ends of the arrangement direction Z.
  • the surface portion on the air mix door 17 side (the lower side in FIG.
  • the interval between the adjacent cylindrical bodies 23a is the interval in the alignment direction Z, and this interval is the joining portion 18a.
  • a plurality of guide plates 25 for guiding the cool air and the warm air to the air mix chamber 18 are provided at the junction 18a, and two guide plates 25 are provided at intervals in this embodiment.
  • the guide plate 25 extends in the warm air merging direction Y and the flow direction X. As a result, the cold air is guided in the flow direction X (upward in FIG. 3).
  • the merging portion 18a through which the warm air merging passage 21 guides the warm air merges with the cold air passage 16 from one side (the lower side in FIG. 2) in the warm air merging direction Y toward the other side (the upper side in FIG. 2). It is a part. Specifically, the part where the warm air merging passage 21 guides the warm air is the interval in the arrangement direction Z.
  • the hot air diffusion passage 24 is a passage extending in the alignment direction Z, and is located downstream of the hot air tunnel passage 23 (the other side in the hot air merging direction Y).
  • the hot air diffusion passage 24 communicates with the hot air tunnel passage 23 and the air mix chamber 18. Therefore, the warm air that has passed through the warm air tunnel passage 23 merges in the warm air diffusion passage 24.
  • the warm air diffusion passage 24 is open in the flow direction X. Accordingly, the hot air diffusion passage 24 is formed in a substantially U-shaped cross section, and a portion where the warm air flows from the hot air tunnel passage 23 is open, but the other portions adjacent to the merging portion 18a and the cold air passage 16 are open.
  • a partition wall 26 which is a first wall portion separating the hot air diffusion passage 24 is provided.
  • the hot air diffusion passage 24 is arranged on the opposite side to the portion (partition wall 26) through which the hot air flows from the hot air tunnel passage 23, with the arrangement direction Z and the flow direction X ( A wall portion 27 (second wall portion) extending in the thickness direction of FIG. 2 is provided.
  • the wall portion 27 is an inner wall of the air conditioning case 12 in the present embodiment. Further, it has a bottom portion 28 that extends in the arrangement direction Z and the hot air merging direction Y and connects the end portion located upstream in the flow direction X (downward in FIG. 1) between the partition wall 26 and the wall portion 27. Therefore, the warm air diffusion passage 24 is surrounded by the partition wall 26, the wall portion 27, and the bottom portion 28.
  • the warm air flowing into the warm air diffusion passage 24 is guided in the flow direction X by the partition wall 26 and the wall portion 27 without flowing into the joining portion 18a.
  • the hot air diffusion passage 24 guides the warm air flowing from the hot air tunnel passage 23 in a direction along the partition wall 26 and the wall portion 27 and guides it to the air mix chamber 18.
  • the warm air immediately after passing through the heater core 14 is first guided to the warm air grid 20 by the warm air merging passage 21. Then, at the outlet of the warm air merging passage 21, a part of the warm air flows into the warm air tunnel passage 23, and the other warm air flows into the interval between the cylindrical bodies 23a, that is, the merging portion 18a.
  • the warm air that has flowed into the merging portion 18 a merges with the cold air that has flowed through the cold air passage 16, is guided in the flow direction X of the cold air by the pressure of the cold air, and flows into the air mix chamber 18.
  • the warm air flowing down the warm air tunnel passage 23 is merged in the warm air diffusion passage 24 and is guided in the flow direction X by the wall portion 27.
  • the warm air guided in the flow direction X is mixed in the air mix chamber 18 with the cold air that has flowed down through the adjacent merged portion 18a.
  • the cool air and the warm air that have passed through the warm air grid 20 are mixed in the alignment direction Z and the warm air merging direction Y.
  • the blowing mode will be described.
  • a face mode for example, a bi-level (B / L) mode, a foot mode, a foot / defroster mode, and a defroster mode as the blowing mode.
  • B / L bi-level
  • the face mode is a mode in which air-conditioned air is blown mainly toward the passenger's upper body.
  • the face mode as shown in FIG. 1, the face / foot door 34 is arranged at a position where the face opening 32 is open and the foot opening 33 is closed. Further, the defroster door 35 is arranged at a position where the defroster opening 31 is closed.
  • the air mixed by the hot air grid 20 flows into the air mix chamber 18, and the conditioned air is blown from the air mix chamber 18 through the face opening 32 into the vehicle interior.
  • the bi-level mode is a mode in which conditioned air is blown toward the passenger's upper body and the feet of the passenger.
  • FIG. 4 is a cross-sectional view of the vehicle air conditioner 10 in the bilevel mode.
  • the face / foot door 34 is arranged at a position where the face opening 32 and the foot opening 33 are opened.
  • the defroster door 35 is arranged at a position where the defroster opening 31 is closed.
  • FIG. 5 is a cross-sectional view of the vehicle air conditioner 10 in the foot mode state.
  • the face / foot door 34 is arranged at a position where the face opening 32 is closed and the foot opening 33 is opened.
  • the defroster door 35 is arranged at a position where the defroster opening 31 is in an open state and air slightly flows through the defroster opening 31.
  • the air mixed by the hot air grid 20 flows into the air mix chamber 18, and the conditioned air is blown from the air mix chamber 18 through the defroster opening 31 and the foot opening 33 into the vehicle interior.
  • the defroster opening 31 is located at a position facing the warm air diffusion passage 24. Therefore, depending on the opening degree of the defroster door 35, mainly air from the hot air diffusion passage 24 flows into the defroster opening 31. Thereby, a temperature difference can be given between the defroster opening 31 and the foot opening 33.
  • the foot / defroster mode is a mode in which conditioned air is blown toward the front window glass and the feet of the passenger.
  • FIG. 6 is a cross-sectional view of the vehicle air conditioner 10 in the foot / defroster mode.
  • the face / foot door 34 is disposed at a position where the face opening 32 is closed and the foot opening 33 is opened.
  • the defroster door 35 is disposed at a position where the defroster opening 31 is open.
  • the defroster mode is a mode in which conditioned air is blown toward the front window glass.
  • FIG. 7 is a cross-sectional view of the vehicle air conditioner 10 in the defroster mode.
  • the face / foot door 34 is arranged at a position where the face opening 32 is closed.
  • the defroster door 35 is arranged at a position where the defroster opening 31 is in the open state and the foot opening 33 is in the closed state.
  • the air mixed by the hot air grid 20 flows into the air mix chamber 18, and the conditioned air is blown from the air mix chamber 18 through the defroster opening 31.
  • the hot air that has flowed down the hot air merging passage 21 joins the cold air that has flowed through the cold air passage 16 at the merging portion 18a.
  • the warm air flowing down the warm air tunnel passage 23 is diffused in the alignment direction Z on the downstream side in the warm air merging direction Y of the merging portion 18 a by the warm air diffusion passage 24 and guided to the air mix chamber 18. Since the hot air diffusion passage 24 is partitioned by the joining portion 18a and the partition wall 26, the hot air diffusion passage 24 is guided to the air mix chamber 18 without joining the cold air at the joining portion 18a.
  • the cool air flowing down the cool air passage 16 is merged with the warm air from the upstream side in the merge direction Y flowing through the warm air confluence passage 21 in the confluence portion 18a.
  • the hot air flowing through the diffusion passage 24 is sandwiched between hot air from the downstream side Y in the merging direction Y.
  • the temperature on the upstream side of the merging direction Y in the merging portion 18a is increased by the warm air that is merged.
  • the cold air and hot air on the other side are difficult to mix.
  • the warm air flowing down the warm air diffusion passage flows downstream in the merging direction Y of the merging portion 18a and is guided to the air mix chamber 18, it can be mixed in the air mix chamber 18 with the cold air having a low temperature. Therefore, in the merging direction Y and the arrangement direction Z, the temperature distribution can be made close to uniform.
  • the mixed air can be blown out from the blowout openings 31 to 33 into the passenger compartment as conditioned air. Therefore, the mixed conditioned air can flow down regardless of the positions of the blowout openings 31 to 33.
  • the mixability of the cold air and the hot air can be improved in the air conditioning case 12 with a simple configuration.
  • a plurality of cylindrical bodies 23 a are provided at intervals in the arrangement direction Z, and join the hot air diffusion passage 24 extending in the arrangement direction Z. Therefore, the hot air can be more uniformly dispersed and sent to the hot air diffusion passage 24 located downstream of the merging portion 18a in the hot air merging direction Y.
  • the joining portion 18a is an interval in the arrangement direction Z, and a portion where the warm air confluence passage 21 guides the hot air is an interval in the arrangement direction Z. Therefore, it is possible to disperse the arrangement direction Z in the portion where the hot air merging passage 21 merges with the cold air passage 16. Thereby, the mixing property in the arrangement direction Z can be further improved.
  • the warm air is guided by the warm air grid 20 to the inner wall (wall portion 27) of the air conditioning case 12 on the other side through the joining portion 18a. Then, the guided warm air is dispersed in the arrangement direction Z which is the case width direction. Then, the warm air dispersed in the alignment direction Z is guided to the air mix chamber 18 along the inner wall of the air conditioning case 12. At this time, the hot air and the cool air are separated by the partition wall 26 in the hot air diffusion passage 24 so that the hot air dispersed in the width direction along the case wall surface is not diffused by the cool air. Since the hot air grid 20 is located on the upstream side of the air mix chamber 18, the hot air guided to the hot air diffusion passage 24 is dispersed in the width direction in all the blowing modes, and is directly blown along the case wall surface. Guided to the exit.
  • the shape such as the height of the partition wall 26 constituting the hot air diffusion passage 24
  • the amount of air flowing from the hot air diffusion passage 24 into the defroster opening 31 can be adjusted.
  • the shapes of the wall 27 and the partition wall 26 constituting the hot air diffusion passage 24 the temperature difference between the defroster opening 31 and the other openings can be adjusted.
  • the blowout openings 31 to 33 the defroster opening 31, the face opening 32, and the foot opening 33 as the front seat opening have been described as examples.
  • the rear opening face opening The vehicle air conditioner 10 provided with a foot opening may be used.
  • the control characteristics of the blowing air temperature in all the blowing openings can be obtained. It can be close to the same level.
  • the hot air flowing down the hot air merging passage 21 flows into the hot air tunnel passage 23, but is not limited to such a configuration, and the hot air merging passage 21 and the hot air tunnel passage 23 are not limited thereto. May be provided in parallel. In other words, the hot air that has passed through the heater core 14 may be branched into the hot air merging passage 21 and the hot air tunnel passage 23.
  • one air mix chamber 18 and one air mix door 17 are provided, and the conditioned air is guided from one air mix chamber 18 to each of the blowing openings on the driver seat side and the passenger seat side.
  • the present disclosure can also be applied to a configuration including an air mix chamber and an air mix door for the driver's seat side and an air mix chamber and an air mix door for the passenger seat side.
  • the hot air grid 20 is installed for each air mix chamber.
  • the air mix door 17 is used as the air mix unit.
  • the present invention is not limited to the air mix door 17, and the flow rate may be changed to change the distribution ratio.
  • the revolving door was employ
  • the heater core 14 is configured to use engine cooling water as a heat source.
  • a heating element such as a PTC heater may be used as another heat source.

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

Abstract

Warm air which has flowed down through a warm air merging conduit (21) merges at a merging portion (18a) with cold air which has flowed through a cold air conduit (16). Also, warm air which has flowed down through a warm air tunnel conduit (23) is diffused by a warm air diffusion conduit (24) in the arrangement direction (Z) on the downstream side of the merging portion (18a) in the warm air merging direction (Y) and guided to an air mix chamber (18). The warm air diffusion conduit (24) and the merging portion (18a) are separated by a partition wall (26), and as a result, the warm air is guided to the air mix chamber (18) without merging with the cold air at the merging portion (18a).

Description

車両用空調装置Air conditioner for vehicles 関連出願の相互参照Cross-reference of related applications
 本出願は、当該開示内容が参照によって本出願に組み込まれた、2011年5月17日に出願された日本特許出願2011-110617を基にしている。 This application is based on Japanese Patent Application No. 2011-110617 filed on May 17, 2011, the disclosure of which is incorporated herein by reference.
 本開示は、冷風と温風とを混合するエアミックス方式の車両用空調装置に関する。 The present disclosure relates to an air mix type vehicle air conditioner that mixes cold air and hot air.
 従来技術の車両用空調装置において、冷風と温風との混合性を向上させる技術が特許文献1に開示されている。特許文献1に記載の技術では、ヒータコアからエアミックスチャンバに至る温風通路と、ヒータコアからエアミックスチャンバを一端迂回して、温風通路の出口とは冷却通路を挟んで反対側に位置する出口を有する温風バイパス通路を設けている。そして温風バイパス通路を流れる温風をUターンさせて冷風通路に温風を吹き出させることで、温風通路と温風バイパス通路とによって冷風通路を挟み込むようにしている。 Patent Document 1 discloses a technique for improving the mixing of cold air and hot air in a conventional vehicle air conditioner. In the technique described in Patent Document 1, a warm air passage extending from the heater core to the air mix chamber, and an outlet that bypasses the air mix chamber at one end from the heater core and is located on the opposite side of the outlet from the warm air passage. A warm air bypass passage having The hot air flowing through the hot air bypass passage is U-turned to blow the hot air into the cold air passage, thereby sandwiching the cold air passage between the hot air passage and the hot air bypass passage.
 また従来技術の車両用空調装置のデフ吹出口において、冷風と温風との混合性を向上させる技術が特許文献2に開示されている。特許文献2に記載の技術では、デフ吹出口に幅方向に温風を分散させる案内部材を設けている。 Further, Patent Document 2 discloses a technique for improving the mixing of cold air and hot air at a differential outlet of a conventional vehicle air conditioner. In the technique described in Patent Document 2, a guide member that disperses warm air in the width direction is provided at the differential outlet.
 前述の特許文献1に記載の技術では、温風バイパス通路によって温風をUターンさせているので、通路抵抗が大きくなる。また前述の特許文献2に記載の技術では、デフ吹出口という特定の吹出口に案内部材を設けているので、他の吹出口については混合性を向上することができない。また他の吹出口のそれぞれに同様の案内部材を設けることも考えられるが、部品点数が多くなり、および装置が大型化になり得る。 In the technique described in Patent Document 1 described above, since the warm air is U-turned by the warm air bypass passage, the passage resistance is increased. Moreover, in the technique described in Patent Document 2, the guide member is provided at a specific air outlet called a differential air outlet, and therefore, the mixing property cannot be improved for other air outlets. It is also conceivable to provide a similar guide member at each of the other outlets, but the number of parts increases and the apparatus can be increased in size.
特開2010-155497号公報JP 2010-155497 A 米国特許第5109755号明細書US Pat. No. 5,091,755
 そこで、本開示は前述の点を鑑みてなされたものであり、簡単な構成で、空調ケース内において冷風と温風との混合性を向上することができる車両用空調装置を提供することを目的とする。 Therefore, the present disclosure has been made in view of the foregoing points, and an object thereof is to provide a vehicle air conditioner that can improve the mixing of cold air and hot air in an air conditioning case with a simple configuration. And
 本開示の一つの態様では、車両用空調装置は、内部に空気通路を形成する空調ケースと、空調ケース内に空気を送風する送風機と、空調ケース内に設けられ、送風機によって送風される空気を冷却する冷却用熱交換器と、空調ケース内に設けられ、冷却用熱交換器を通過した空気を加熱する加熱用熱交換器と、空調ケース内に形成され、加熱用熱交換器を通過せずに冷却用熱交換器を通過した冷風が流れる冷風通路部と、空調ケース内に形成され、加熱用熱交換器を通過した後の温風が流れる温風通路部と、空調ケース内に設けられ、加熱用熱交換器を通過する空気量と冷風通路部を流れる空気量とを調整するエアミックス部と、空調ケース内に設けられ、温風通路部からの温風と冷風通路部からの冷風とが混合される混合室と、空調ケース内に設けられ、混合室にて混合された空調風を車室内の複数箇所に向けて吹き出す複数の吹出開口部と、を含む。温風と冷風とは混合室内の上流側に位置する合流部分で合流するように混合室が構成されている。冷風通路部は合流部分において冷風を温風に対して交差するように導いている。温風通路部は、合流部分に温風を導く温風合流通路と、合流部分を横断するように配置され温風の合流方向に延びる筒状体の内側に形成される通路であって、筒状体内を流れる温風を合流部分に対して温風の合流方向下流側へ導く温風トンネル通路と、混合室および温風トンネル通路と連通する通路であって、温風トンネル通路を流れてきた温風が流入し、合流部分と筒状体とが並ぶ方向であって、冷風の流れ方向に交差する並び方向に延びる温風拡散通路と、を有する。温風拡散通路は、並び方向および冷風の流れ方向に延び、合流部分と温風拡散通路とを仕切る第1の壁部と、並び方向および冷風の流れ方向に延び、第1の壁部の温風の合流方向下流側に間隔をあけて位置する第2の壁部と、並び方向および温風の合流方向に延び、第1の壁部と第2の壁部との冷風の流れ方向上流側に位置する端部を連結する底部と、で囲まれておる。温風拡散通路は、温風トンネル通路から流れてきた温風を第1の壁部および第2の壁部に沿う方向へ導いて、混合室に導くように構成される。 In one aspect of the present disclosure, a vehicle air conditioner includes an air conditioning case that forms an air passage therein, a blower that blows air into the air conditioning case, and air that is provided in the air conditioning case and is blown by the blower. A cooling heat exchanger for cooling, a heating heat exchanger for heating air that has passed through the cooling heat exchanger, and a heating heat exchanger that is formed in the air conditioning case and that passes through the heating heat exchanger. The cool air passage section through which the cool air that has passed through the cooling heat exchanger flows, the hot air passage section that is formed in the air conditioning case and through which the hot air passes through the heat exchanger for heating, and the air conditioning case are provided. An air mix unit that adjusts the amount of air that passes through the heat exchanger for heating and the amount of air that flows through the cool air passage unit, and is provided in the air conditioning case. A mixing chamber where cold air is mixed, and an air conditioning Provided within, it includes a plurality of outlet openings for blowing out mixed conditioned air in the mixing chamber toward the plurality of locations in the vehicle compartment, a. The mixing chamber is configured so that the warm air and the cold air are merged at a merging portion located on the upstream side in the mixing chamber. The cold air passage portion guides the cold air to intersect the warm air at the junction. The hot air passage portion is a passage formed inside a hot air confluence passage that guides the hot air to the confluence portion and a tubular body that is arranged so as to cross the confluence portion and extends in the confluence direction of the hot air, A hot air tunnel passage that guides the hot air flowing through the body to the downstream side in the direction of the hot air merging with respect to the merging portion, and a passage that communicates with the mixing chamber and the hot air tunnel passage. The hot air flows in, and the hot air diffusion passage extends in the direction in which the merged portion and the cylindrical body are arranged and intersects the flow direction of the cold air. The hot air diffusion passage extends in the arrangement direction and the flow direction of the cold air, extends in the arrangement direction and the flow direction of the cold air, and extends in the arrangement direction and the flow direction of the cold air. A second wall portion that is positioned at a downstream side in the wind merging direction and an upstream side in the cold air flow direction between the first wall portion and the second wall portion, extending in the arrangement direction and the hot air merging direction. And a bottom portion connecting the end portions located at the bottom. The hot air diffusion passage is configured to guide the hot air flowing from the hot air tunnel passage in a direction along the first wall portion and the second wall portion and to guide to the mixing chamber.
 よって、温風合流通路を流下した温風が合流部分にて冷風通路部を流れた冷風と合流する。また温風トンネル通路を流下した温風は、温風拡散通路によって、合流部分の温風の合流方向下流側にて並び方向に拡散して、混合室に導かれる。温風拡散通路は、合流部分と第1の壁部によって仕切られているので、合流部分にて冷風と合流することなく混合室に導かれる。したがって冷風通路部を流下した冷風は、合流部分にて温風の温風合流通路を流れた合流方向の上流側からの温風と合流し、さらに混合室にて、温風拡散通路を流れた温風の合流方向下流側からの温風とで挟むようになる。また温風合流通路を流れた温風と冷風との合流部分における合流によって、合流部分おける合流方向上流側の温度は合流する温風によって高くなるが、合流部分における合流方向他方側の冷風と温風は混ざりにくい。そこで温風拡散通路を流下した温風が合流部分の合流方向下流側を流下して混合室に導かれるので、温度が低い冷風と混合室にて混合させることができる。したがって合流方向および並び方向において、温度分布を均一に近づけることができる。そして混合した空気を空調風として、吹出開口部から車室内に向けて吹き出せることができる。したがって吹出開口部の位置などにかかわらず、混合した空調風を流下させることができる。このように本開示の車両用空調装置では、簡単な構成で、空調ケース内において冷風と温風との混合性を向上することができる。 Therefore, the hot air that has flowed down the hot air merging passage joins the cold air that has flowed through the cold air passage portion at the merging portion. Further, the warm air flowing down the warm air tunnel passage is diffused in the direction of alignment at the downstream side of the joining portion of the warm air in the joining portion by the warm air diffusion passage, and is guided to the mixing chamber. Since the hot air diffusion passage is partitioned by the joining portion and the first wall portion, the hot air diffusion passage is guided to the mixing chamber without joining the cool air at the joining portion. Therefore, the cold air that has flowed down the cold air passage portion merged with the warm air from the upstream side in the merging direction that flowed through the warm air confluence passage at the confluence, and further flowed through the hot air diffusion passage in the mixing chamber. It is sandwiched between warm air from the downstream side of the hot air merging direction. Further, the temperature at the upstream side in the merging direction in the merging portion becomes higher due to the merging hot air due to the merging at the merging portion of the warm air and the cold air flowing through the warm air merging passage. The wind is difficult to mix. Therefore, since the warm air flowing down the warm air diffusion passage flows down the merging direction downstream side of the merging portion and is guided to the mixing chamber, it can be mixed with the cold air having a low temperature in the mixing chamber. Therefore, the temperature distribution can be made uniform in the merging direction and the arrangement direction. And it can blow out toward the vehicle interior from a blowing opening part by making mixed air into an air conditioning wind. Therefore, the mixed conditioned air can flow down regardless of the position of the blowout opening. As described above, the vehicle air conditioner according to the present disclosure can improve the mixability of the cold air and the hot air in the air conditioning case with a simple configuration.
 例えば、筒状体は、並び方向に間隔をあけて複数設けられてもよい。この場合、並び方向に分散して温風を温風トンネル通路から温風拡散通路に送ることができる。また合流部分において、温風と冷風とを合流する部分を隣接する筒状体の間隔によって、尾温風合流通路からの温風を並び方向の分散させて、合流部分に導くことができる。これによって並び方向における混合性をより向上することができる。 For example, a plurality of cylindrical bodies may be provided at intervals in the arrangement direction. In this case, the hot air can be distributed in the arrangement direction and sent from the hot air tunnel passage to the hot air diffusion passage. Further, in the merging portion, the warm air from the tail warm air merging passage can be distributed in the direction of alignment by the interval between the adjacent cylindrical bodies at the portion where the warm air and the cold air merge, and can be guided to the merging portion. Thereby, the mixing property in the alignment direction can be further improved.
 前記合流部分には、冷風と温風とを混合室に案内する複数の案内板が複数の前記筒状体の間に設けられてもよい。 A plurality of guide plates for guiding the cold air and the hot air to the mixing chamber may be provided between the plurality of cylindrical bodies in the joining portion.
本開示の実施形態の一例の車両用空調装置の断面図である。It is sectional drawing of the vehicle air conditioner of an example of embodiment of this indication. 図1中のII-II線断面図である。FIG. 2 is a sectional view taken along line II-II in FIG. 温風グリッドを示す斜視図である。It is a perspective view which shows a warm air grid. バイレベルモードの状態における車両用空調装置の断面図である。It is sectional drawing of the vehicle air conditioner in the state of bilevel mode. フットモードの状態における車両用空調装置の断面図である。It is sectional drawing of the vehicle air conditioner in the state of foot mode. フット/デフモードの状態における車両用空調装置の断面図である。It is sectional drawing of the vehicle air conditioner in the state of foot / diff mode. デフロスタモードの状態における車両用空調装置の断面図である。It is sectional drawing of the vehicle air conditioner in the state of a defroster mode.
 本開示の実施形態に関して、図1~図7を用いて説明する。図1は、本開示の実施形態の一例の車両用空調装置10の断面図を示す。まず、本実施形態の車両用空調装置10の全体構成について説明する。車両用空調装置10は、室内空調ユニット(図示せず)を備えている。室内空調ユニットは、車室内最前部の図示しない車両計器盤の内側に配置される。室内空調ユニットは、図示しない送風機ユニットと、図1に示す空調本体ユニット11とを有している。 The embodiment of the present disclosure will be described with reference to FIGS. FIG. 1 shows a cross-sectional view of a vehicle air conditioner 10 according to an example of an embodiment of the present disclosure. First, the whole structure of the vehicle air conditioner 10 of this embodiment is demonstrated. The vehicle air conditioner 10 includes an indoor air conditioning unit (not shown). The indoor air conditioning unit is disposed inside a vehicle instrument panel (not shown) at the foremost part of the vehicle interior. The indoor air conditioning unit has a blower unit (not shown) and an air conditioning main unit 11 shown in FIG.
 空調本体ユニット11は、車両左右方向の略中央に配置される。送風機ユニットは、空調本体ユニット11に対して助手席側に所定寸法だけ離間して配置される。送風機ユニットは、内外気を切替導入する内外気切替箱と送風機とを有しており、送風機によって、導入した空気を空調本体ユニット11に送風するものである。 The air conditioning main unit 11 is arranged at the approximate center in the left-right direction of the vehicle. The blower unit is arranged with a predetermined dimension away from the air conditioning body unit 11 on the passenger seat side. The blower unit has an inside / outside air switching box and a blower for switching and introducing the inside and outside air, and the introduced air is blown to the air conditioning main unit 11 by the blower.
 図1に示すように、空調本体ユニット11は、空調ケース12の内部に、蒸発器13とヒータコア14とを収納している。空調ケース12は、空気通路15を内部に形成するものであり、樹脂材料で構成されている。空調ケース12の前方側(図1の左方側)に送風機ユニットが設けられ、送風機ユニットから空調ケース12内に空気が送風される。 As shown in FIG. 1, the air conditioning body unit 11 houses an evaporator 13 and a heater core 14 in an air conditioning case 12. The air conditioning case 12 has an air passage 15 formed therein and is made of a resin material. A blower unit is provided in front of the air conditioning case 12 (left side in FIG. 1), and air is blown into the air conditioning case 12 from the blower unit.
 蒸発器13は、蒸発器13の内部を通過する冷媒と空調ケース12内を流れる空気とを熱交換させて空気を冷却する冷却用熱交換器である。蒸発器13は、空調ケース12の内部の前方側に配置されており、送風機ユニットから送風された空気を冷却する。したがって、蒸発器13を通過した空気は冷風となって流れる。 The evaporator 13 is a cooling heat exchanger that cools air by exchanging heat between the refrigerant passing through the evaporator 13 and the air flowing through the air conditioning case 12. The evaporator 13 is arrange | positioned at the front side inside the air conditioning case 12, and cools the air ventilated from the air blower unit. Therefore, the air that has passed through the evaporator 13 flows as cold air.
 ヒータコア14は、内部を通過する冷媒、たとえばエンジン冷却水と蒸発器13を通過した空気とを熱交換させて空気を加熱する加熱用熱交換器である。したがって、ヒータコア14を通過した空気は温風となって流れる。ヒータコア14は、蒸発器13の後方側(図1の右方側)であって、空調ケース12内の下方側に配置されている。空調ケース12のうちヒータコア14の後方側には、ヒータコア14からの温風が流れる温風合流通路21が形成されている。 The heater core 14 is a heat exchanger for heating that heats air by exchanging heat between a refrigerant passing through the inside, for example, engine coolant and air that has passed through the evaporator 13. Therefore, the air that has passed through the heater core 14 flows as warm air. The heater core 14 is disposed behind the evaporator 13 (on the right side in FIG. 1) and below the air conditioning case 12. A hot air merging passage 21 through which hot air from the heater core 14 flows is formed on the rear side of the heater core 14 in the air conditioning case 12.
 空調ケース12のうち蒸発器13の上方側には、ヒータコア14を迂回(バイパス)して蒸発器13からの冷風が流れる冷風通路16が形成されている。冷風通路16は蒸発器13から上方に向かって延びている。 A cold air passage 16 is formed above the evaporator 13 in the air conditioning case 12 so as to bypass (bypass) the heater core 14 and allow the cold air from the evaporator 13 to flow. The cold air passage 16 extends upward from the evaporator 13.
 空調ケース12の内部のうち蒸発器13とヒータコア14との間には、ヒータコア14を流れる空気量と、冷風通路16を流れる空気量との割合を調整するエアミックスドア17が配置されている。エアミックスドア17は、たとえば回転ドアで構成されている。 Between the evaporator 13 and the heater core 14 in the air conditioning case 12, an air mix door 17 that adjusts the ratio of the amount of air flowing through the heater core 14 and the amount of air flowing through the cold air passage 16 is disposed. The air mix door 17 is comprised by the rotation door, for example.
 空調ケース12の内部のうち蒸発器13の後方側であって、ヒータコア14の下流側に、冷風通路16からの冷風と、ヒータコア14からの温風とを衝突させて混合する混合室であるエアミックスチャンバ18が形成されている。 Air that is a mixing chamber that mixes cold air from the cold air passage 16 and hot air from the heater core 14 on the rear side of the evaporator 13 in the air conditioning case 12 and downstream of the heater core 14 to collide with each other. A mix chamber 18 is formed.
 空調ケース12内には、エアミックスチャンバ18にて混合された空調風を車室内の複数箇所に向けて吹き出す複数の吹出開口部31~33が設けられる。したがって吹出開口部31~33は、エアミックスチャンバ18の空気流れ下流側に設けられる。本実施形態では、複数の吹出開口部31~33として、デフロスタ開口部31、フェイス開口部32およびフット開口部33が設けられている。デフロスタ開口部31は、前側窓ガラスの内表面に空調風を吹き出すためのものである。フェイス開口部32は、乗員上半身に向けて空調風を吹き出すためのものである。フット開口部33は、乗員の足元に向けて空調風を吹き出すためのものである。 In the air conditioning case 12, a plurality of outlet openings 31 to 33 are provided for blowing the conditioned air mixed in the air mix chamber 18 toward a plurality of locations in the passenger compartment. Accordingly, the blowout openings 31 to 33 are provided on the air flow downstream side of the air mix chamber 18. In the present embodiment, a defroster opening 31, a face opening 32, and a foot opening 33 are provided as the plurality of blowing openings 31 to 33. The defroster opening 31 is for blowing conditioned air to the inner surface of the front window glass. The face opening 32 is for blowing out the conditioned air toward the passenger's upper body. The foot opening 33 is for blowing the conditioned air toward the feet of the occupant.
 空調ケース12には、複数の吹出開口部31~33を選択して開閉する吹出モードドアが設けられている。具体的には、フェイス開口部32とフット開口部33とを開閉するフェイス・フットドア34と、デフロスタ開口部31を開閉するデフロスタドア35とが設けられている。フェイス・フットドア34およびデフロスタドア35は、吹出開口部31~33を開閉する板状のドア本体部とドア本体部を回転させる回転軸とを有する板ドアによって構成されている。 The air conditioning case 12 is provided with a blow mode door that selects and opens and closes a plurality of blow openings 31 to 33. Specifically, a face / foot door 34 that opens and closes the face opening 32 and the foot opening 33 and a defroster door 35 that opens and closes the defroster opening 31 are provided. The face / foot door 34 and the defroster door 35 are constituted by a plate door having a plate-like door main body for opening and closing the blowout openings 31 to 33 and a rotating shaft for rotating the door main body.
 次に、温風グリッド20に関して説明する。図2は、図1中のII-II線断面図である。図3は、温風グリッド20を示す斜視図である。温風グリッド20は、冷風と温風とを混合するために設けられる。図2では、理解を容易にするため温風の流れを矢印にて示し、冷風の流れの図示は省略している。図3では、理解を容易にするため温風の流れを実線の矢印で示し、冷風の流れを破線の矢印で示している。以下、冷風の温風グリッド20における流れ方向X(図1における上下方向)に対して、交差、具体的には直交する方向であって冷風通路16を横断する方向を温風合流方向Y(図1における左右方向)と称し、流れ方向Xおよび温風合流方向Yに直交する方向を並び方向Z(図1の紙面に垂直な方向)と称することがある。 Next, the hot air grid 20 will be described. 2 is a sectional view taken along line II-II in FIG. FIG. 3 is a perspective view showing the warm air grid 20. The hot air grid 20 is provided to mix cold air and hot air. In FIG. 2, for easy understanding, the flow of hot air is indicated by an arrow, and the illustration of the flow of cold air is omitted. In FIG. 3, for easy understanding, the flow of hot air is indicated by solid arrows, and the flow of cold air is indicated by broken arrows. Hereinafter, the direction crossing the flow direction X (vertical direction in FIG. 1) of the hot air grid 20 of the cold air, specifically, the direction orthogonal to the cold air passage 16 and the direction crossing the cold air passage 16 is defined as the hot air merging direction Y (FIG. 1 and the direction perpendicular to the flow direction X and the warm air merging direction Y may be referred to as an alignment direction Z (a direction perpendicular to the paper surface of FIG. 1).
 温風グリッド20は、空調ケース12の内部のうち、エアミックスドア17とエアミックスチャンバ18との間に設けられる。温風グリッド20は、たとえば空調ケース12と同一の樹脂材料で一体に形成され、もしくは、空調ケース12と別体に形成された後、空調ケース12に固定される。 The hot air grid 20 is provided between the air mix door 17 and the air mix chamber 18 in the air conditioning case 12. The hot air grid 20 is formed integrally with the same resin material as the air conditioning case 12, for example, or formed separately from the air conditioning case 12 and then fixed to the air conditioning case 12.
 温風グリッド20は、ヒータコア14からの温風が流れる温風合流通路21の出口に設けられる。また温風グリッド20は、冷風通路16を横断するように設けられる。換言すると、温風グリッド20は、冷風通路16からの冷風の流れ方向Xと温風合流通路21からの温風の吹出方向とが交差する部位であって、吹出モードドアの可動域よりも空気流れ上流側に位置している。交差する部位は、エアミックスチャンバ18内の上流側に位置する合流部分18aであり、温風と冷風とが合流する部分である。冷風通路16から温風グリッド20への冷風の吹出方向は、図1における上方であり、温風合流通路21からの冷風通路16への温風の吹出方向は、図1における左方である。よって、冷風通路16からの冷風の吹出方向と、温風合流通路21からの温風の吹出方向とは交差している。したがって、冷風通路16は、合流部分18aにおいて冷風を温風に対して交差するように導く。 The hot air grid 20 is provided at the exit of the hot air merging passage 21 through which the hot air from the heater core 14 flows. The hot air grid 20 is provided so as to cross the cold air passage 16. In other words, the hot air grid 20 is a portion where the flow direction X of the cold air from the cold air passage 16 intersects with the direction of the hot air blowing from the hot air merging passage 21, and the air is more air than the movable range of the blow mode door. Located upstream of the flow. The intersecting portion is a merged portion 18a located on the upstream side in the air mix chamber 18, and is a portion where hot air and cold air merge. The blowing direction of the cold air from the cold air passage 16 to the hot air grid 20 is the upper side in FIG. 1, and the blowing direction of the hot air from the hot air confluence passage 21 to the cold air passage 16 is the left side in FIG. Therefore, the blowing direction of the cold air from the cold air passage 16 and the blowing direction of the hot air from the hot air merging passage 21 intersect each other. Therefore, the cold air passage 16 guides the cold air to intersect the warm air at the junction 18a.
 温風グリッド20は、温風合流通路21を流下した温風の一部が通過する冷風通路16とは独立した通路として、温風トンネル通路23と温風拡散通路24とを有する。温風トンネル通路23は、合流部分18aを横断するように配置される。温風トンネル通路23は、温風合流方向Yに延びる筒状体23aの内側に形成される通路である。温風トンネル通路23は、筒状体23a内を流れる温風を合流部分18aに対して温風合流方向Y下流側へ導く。換言すると、温風トンネル通路23は、合流部分18aの一部を塞ぐように温風合流方向Yに横断し、冷風通路16の温風合流方向Yの他方側に位置する温風拡散通路24に温風を導く。筒状体23aは、温風合流方向Yに延び、並び方向Z(図2の左右方向)に間隔をあけて、複数設けられ、本実施形態では3つ設けられる。3つの温風トンネル通路23は、並び方向Zの中央と、並び方向Zの両方の端にそれぞれ設けられる。筒状体23aの外壁のうちエアミックスドア17側(図3の下方側)の面部は、例えば流線型に形成され、本実施形態では角部がR面取りなされる。これによって冷風が隣接する合流部分18aである筒状体23a間に流入するとき発生する通風抵抗を、流線型の外壁によって低減することができる。 The hot air grid 20 has a hot air tunnel passage 23 and a hot air diffusion passage 24 as a passage independent of the cold air passage 16 through which a part of the hot air flowing down the hot air confluence passage 21 passes. The hot air tunnel passage 23 is disposed so as to cross the joining portion 18a. The hot air tunnel passage 23 is a passage formed inside the cylindrical body 23a extending in the hot air merging direction Y. The warm air tunnel passage 23 guides the warm air flowing in the cylindrical body 23a to the downstream side in the warm air merging direction Y with respect to the merging portion 18a. In other words, the hot air tunnel passage 23 crosses in the hot air merging direction Y so as to block a part of the merging portion 18a, and is connected to the hot air diffusion passage 24 located on the other side of the cold air passage 16 in the hot air merging direction Y. Guide hot air. A plurality of the cylindrical bodies 23a are provided in the warm air merging direction Y, and are provided at intervals in the arrangement direction Z (left and right direction in FIG. 2). In the present embodiment, three cylindrical bodies 23a are provided. The three hot air tunnel passages 23 are respectively provided at the center of the arrangement direction Z and at both ends of the arrangement direction Z. Of the outer wall of the cylindrical body 23a, the surface portion on the air mix door 17 side (the lower side in FIG. 3) is formed in, for example, a streamlined shape, and the corner portion is rounded in this embodiment. As a result, it is possible to reduce the ventilation resistance generated when the cold air flows between the cylindrical bodies 23a, which are adjacent confluence portions 18a, by the streamlined outer wall.
 したがって、隣接する筒状体23aの間は、並び方向Zの間隔となり、この間隔が合流部分18aである。また合流部分18aには、冷風と温風とをエアミックスチャンバ18に案内する案内板25が複数、本実施形態では間隔毎に2つ設けられる。案内板25は、温風合流方向Yおよび流れ方向Xに延びる。これによって冷風が流れ方向X(図3の上方)に案内される。 Therefore, the interval between the adjacent cylindrical bodies 23a is the interval in the alignment direction Z, and this interval is the joining portion 18a. Further, a plurality of guide plates 25 for guiding the cool air and the warm air to the air mix chamber 18 are provided at the junction 18a, and two guide plates 25 are provided at intervals in this embodiment. The guide plate 25 extends in the warm air merging direction Y and the flow direction X. As a result, the cold air is guided in the flow direction X (upward in FIG. 3).
 また温風合流通路21が温風を導く合流部分18aは、温風合流方向Yの一方側(図2の下方側)から他方側(図2の上方側)に向かって冷風通路16と合流する部位である。具体的には、温風合流通路21が温風を導く部位は、並び方向Zの間隔である。 The merging portion 18a through which the warm air merging passage 21 guides the warm air merges with the cold air passage 16 from one side (the lower side in FIG. 2) in the warm air merging direction Y toward the other side (the upper side in FIG. 2). It is a part. Specifically, the part where the warm air merging passage 21 guides the warm air is the interval in the arrangement direction Z.
 温風拡散通路24は、並び方向Zに延びる通路であり、温風トンネル通路23の下流側(温風合流方向Yの他方側)に位置する。また温風拡散通路24は、温風トンネル通路23とエアミックスチャンバ18とに連通する。したがって温風トンネル通路23を通過した温風は、温風拡散通路24にて合流する。また温風拡散通路24は、流れ方向Xが開放されている。したがって温風拡散通路24は、断面略U字状に形成され、温風トンネル通路23から温風が流入する部分は開口しているが、合流部分18aに隣接する他の部分について冷風通路16と温風拡散通路24とを隔てる第1の壁部である隔壁26が設けられる。さらに温風拡散通路24は、温風トンネル通路23から温風が流入する部分(隔壁26)とは反対側に、温風合流方向Yに間隔をあけて並び方向Zおよび冷風の流れ方向X(図2の紙面厚み方向)に延びる壁部27(第2の壁部)を有する。壁部27は、本実施形態では空調ケース12の内壁である。さらに並び方向Zおよび温風の合流方向Yに延び、隔壁26と壁部27との流れ方向X上流側(図1の下方)に位置する端部を連結する底部28とを有する。したがって温風拡散通路24は、隔壁26と壁部27と底部28とでで囲まれている。したがって温風拡散通路24に流入した温風は、隔壁26および壁部27によって合流部分18aに流入することなく流れ方向Xに案内される。そして温風拡散通路24は、温風トンネル通路23から流れてきた温風を隔壁26および壁部27に沿う方向へ導いて、エアミックスチャンバ18に導く。 The hot air diffusion passage 24 is a passage extending in the alignment direction Z, and is located downstream of the hot air tunnel passage 23 (the other side in the hot air merging direction Y). The hot air diffusion passage 24 communicates with the hot air tunnel passage 23 and the air mix chamber 18. Therefore, the warm air that has passed through the warm air tunnel passage 23 merges in the warm air diffusion passage 24. The warm air diffusion passage 24 is open in the flow direction X. Accordingly, the hot air diffusion passage 24 is formed in a substantially U-shaped cross section, and a portion where the warm air flows from the hot air tunnel passage 23 is open, but the other portions adjacent to the merging portion 18a and the cold air passage 16 are open. A partition wall 26 which is a first wall portion separating the hot air diffusion passage 24 is provided. Further, the hot air diffusion passage 24 is arranged on the opposite side to the portion (partition wall 26) through which the hot air flows from the hot air tunnel passage 23, with the arrangement direction Z and the flow direction X ( A wall portion 27 (second wall portion) extending in the thickness direction of FIG. 2 is provided. The wall portion 27 is an inner wall of the air conditioning case 12 in the present embodiment. Further, it has a bottom portion 28 that extends in the arrangement direction Z and the hot air merging direction Y and connects the end portion located upstream in the flow direction X (downward in FIG. 1) between the partition wall 26 and the wall portion 27. Therefore, the warm air diffusion passage 24 is surrounded by the partition wall 26, the wall portion 27, and the bottom portion 28. Therefore, the warm air flowing into the warm air diffusion passage 24 is guided in the flow direction X by the partition wall 26 and the wall portion 27 without flowing into the joining portion 18a. The hot air diffusion passage 24 guides the warm air flowing from the hot air tunnel passage 23 in a direction along the partition wall 26 and the wall portion 27 and guides it to the air mix chamber 18.
 次に、温風と冷風との流れに関して説明する。ヒータコア14を通過直後の温風は、先ず温風合流通路21によって温風グリッド20まで案内される。そして温風合流通路21の出口にて、一部の温風が温風トンネル通路23に流入し、他の温風が筒状体23aの間隔、すなわち合流部分18aに流入する。合流部分18aの流入した温風は、冷風通路16を流れた冷風と合流し、冷風の圧力によって冷風の流れ方向Xに案内されて、エアミックスチャンバ18に流入する。 Next, the flow of hot air and cold air will be described. The warm air immediately after passing through the heater core 14 is first guided to the warm air grid 20 by the warm air merging passage 21. Then, at the outlet of the warm air merging passage 21, a part of the warm air flows into the warm air tunnel passage 23, and the other warm air flows into the interval between the cylindrical bodies 23a, that is, the merging portion 18a. The warm air that has flowed into the merging portion 18 a merges with the cold air that has flowed through the cold air passage 16, is guided in the flow direction X of the cold air by the pressure of the cold air, and flows into the air mix chamber 18.
 また温風トンネル通路23を流下した温風は、温風拡散通路24にて合流し、壁部27によって流れ方向Xに案内される。流れ方向Xに案内された温風は、隣接する合流部分18aを流下した冷風とエアミックスチャンバ18にて混合される。このように温風グリッド20を通過した冷風と温風とは、並び方向Zおよび温風合流方向Yに混合されることになる。 Further, the warm air flowing down the warm air tunnel passage 23 is merged in the warm air diffusion passage 24 and is guided in the flow direction X by the wall portion 27. The warm air guided in the flow direction X is mixed in the air mix chamber 18 with the cold air that has flowed down through the adjacent merged portion 18a. Thus, the cool air and the warm air that have passed through the warm air grid 20 are mixed in the alignment direction Z and the warm air merging direction Y.
 次に、吹出モードに関して説明する。本実施形態の車両用空調装置10では、吹出モードとして、たとえばフェイスモード、バイレベル(B/L)モード、フットモード、フット/デフロスタモードおよびデフロスタモードがある。 Next, the blowing mode will be described. In the vehicle air conditioner 10 of the present embodiment, there are, for example, a face mode, a bi-level (B / L) mode, a foot mode, a foot / defroster mode, and a defroster mode as the blowing mode.
 先ず、フェイスモードに関して説明する。フェイスモードは、主に乗員上半身に向けて空調風を吹き出すモードである。フェイスモードでは、図1に示すように、フェイス開口部32が開状態であり、フット開口部33が閉状態となる位置にフェイス・フットドア34を配置している。またデフロスタ開口部31が閉状態となる位置にデフロスタドア35を配置している。これによって温風グリッド20によって混合された空気がエアミックスチャンバ18に流入し、エアミックスチャンバ18からフェイス開口部32を介して空調風が車室内に送風される。 First, the face mode will be described. The face mode is a mode in which air-conditioned air is blown mainly toward the passenger's upper body. In the face mode, as shown in FIG. 1, the face / foot door 34 is arranged at a position where the face opening 32 is open and the foot opening 33 is closed. Further, the defroster door 35 is arranged at a position where the defroster opening 31 is closed. As a result, the air mixed by the hot air grid 20 flows into the air mix chamber 18, and the conditioned air is blown from the air mix chamber 18 through the face opening 32 into the vehicle interior.
 次に、バイレベルモードに関して説明する。バイレベルモードは、乗員上半身および乗員の足元に向けて空調風を吹き出すモードである。図4は、バイレベルモードの状態における車両用空調装置10の断面図である。バイレベルモードでは、図4に示すように、フェイス開口部32およびフット開口部33が開状態となる位置にフェイス・フットドア34を配置している。またデフロスタ開口部31が閉状態となる位置にデフロスタドア35を配置している。これによって温風グリッド20によって混合された空気がエアミックスチャンバ18に流入し、エアミックスチャンバ18からフェイス開口部32およびフット開口部33を介して空調風が車室内に送風される。 Next, the bi-level mode will be described. The bi-level mode is a mode in which conditioned air is blown toward the passenger's upper body and the feet of the passenger. FIG. 4 is a cross-sectional view of the vehicle air conditioner 10 in the bilevel mode. In the bi-level mode, as shown in FIG. 4, the face / foot door 34 is arranged at a position where the face opening 32 and the foot opening 33 are opened. Further, the defroster door 35 is arranged at a position where the defroster opening 31 is closed. As a result, air mixed by the hot air grid 20 flows into the air mix chamber 18, and conditioned air is blown from the air mix chamber 18 through the face opening 32 and the foot opening 33 into the vehicle interior.
 次に、フットモードに関して説明する。フットモードは、主に乗員の足元に向けて空調風を吹き出すモードである。図5は、フットモードの状態における車両用空調装置10の断面図である。フットモードでは、図5に示すように、フェイス開口部32が閉状態であり、フット開口部33が開状態となる位置にフェイス・フットドア34を配置している。またデフロスタ開口部31が開状態であって、デフロスタ開口部31にわずかに空気が流れる位置にデフロスタドア35を配置している。これによって温風グリッド20によって混合された空気がエアミックスチャンバ18に流入し、エアミックスチャンバ18からデフロスタ開口部31およびフット開口部33を介して空調風が車室内に送風される。またデフロスタ開口部31は、温風拡散通路24に対向するような位置にある。したがってデフロスタドア35の開度によっては、デフロスタ開口部31へは主に温風拡散通路24からの空気が流入する。これによってデフロスタ開口部31とフット開口部33とで温度差を付けることができる。 Next, the foot mode will be described. The foot mode is a mode in which air conditioned air is blown mainly toward the passenger's feet. FIG. 5 is a cross-sectional view of the vehicle air conditioner 10 in the foot mode state. In the foot mode, as shown in FIG. 5, the face / foot door 34 is arranged at a position where the face opening 32 is closed and the foot opening 33 is opened. Further, the defroster door 35 is arranged at a position where the defroster opening 31 is in an open state and air slightly flows through the defroster opening 31. As a result, the air mixed by the hot air grid 20 flows into the air mix chamber 18, and the conditioned air is blown from the air mix chamber 18 through the defroster opening 31 and the foot opening 33 into the vehicle interior. The defroster opening 31 is located at a position facing the warm air diffusion passage 24. Therefore, depending on the opening degree of the defroster door 35, mainly air from the hot air diffusion passage 24 flows into the defroster opening 31. Thereby, a temperature difference can be given between the defroster opening 31 and the foot opening 33.
 次に、フット/デフロスタモードに関して説明する。フット/デフロスタモードは、前側窓ガラスおよび乗員の足元に向けて空調風を吹き出すモードである。図6は、フット/デフロスタモードの状態における車両用空調装置10の断面図である。フット/デフロスタモードでは、図6に示すように、フェイス開口部32が閉状態であり、フット開口部33が開状態となる位置にフェイス・フットドア34を配置している。またデフロスタ開口部31が開状態となる位置にデフロスタドア35を配置している。これによって温風グリッド20によって混合された空気がエアミックスチャンバ18に流入し、エアミックスチャンバ18からデフロスタ開口部31およびフット開口部33を介して空調風が車室内に送風される。 Next, the foot / defroster mode will be described. The foot / defroster mode is a mode in which conditioned air is blown toward the front window glass and the feet of the passenger. FIG. 6 is a cross-sectional view of the vehicle air conditioner 10 in the foot / defroster mode. In the foot / defroster mode, as shown in FIG. 6, the face / foot door 34 is disposed at a position where the face opening 32 is closed and the foot opening 33 is opened. Further, the defroster door 35 is disposed at a position where the defroster opening 31 is open. As a result, the air mixed by the hot air grid 20 flows into the air mix chamber 18, and the conditioned air is blown from the air mix chamber 18 through the defroster opening 31 and the foot opening 33 into the vehicle interior.
 次に、デフロスタモードに関して説明する。デフロスタモードは、前側窓ガラスに向けて空調風を吹き出すモードである。図7は、デフロスタモードの状態における車両用空調装置10の断面図である。デフロスタモードでは、図7に示すように、フェイス開口部32が閉状態となる位置にフェイス・フットドア34を配置している。またデフロスタ開口部31が開状態であり、フット開口部33が閉状態となる位置にデフロスタドア35を配置している。これによって温風グリッド20によって混合された空気がエアミックスチャンバ18に流入し、エアミックスチャンバ18からデフロスタ開口部31を介して空調風が車室内に送風される。 Next, the defroster mode will be described. The defroster mode is a mode in which conditioned air is blown toward the front window glass. FIG. 7 is a cross-sectional view of the vehicle air conditioner 10 in the defroster mode. In the defroster mode, as shown in FIG. 7, the face / foot door 34 is arranged at a position where the face opening 32 is closed. Further, the defroster door 35 is arranged at a position where the defroster opening 31 is in the open state and the foot opening 33 is in the closed state. As a result, the air mixed by the hot air grid 20 flows into the air mix chamber 18, and the conditioned air is blown from the air mix chamber 18 through the defroster opening 31.
 以上説明したように本実施形態の車両用空調装置10では、温風合流通路21を流下した温風が合流部分18aにて冷風通路16を流れた冷風と合流する。また温風トンネル通路23を流下した温風は、温風拡散通路24によって、合流部分18aの温風合流方向Y下流側にて並び方向Zに拡散して、エアミックスチャンバ18に導かれる。温風拡散通路24は、合流部分18aと隔壁26によって仕切られているので、合流部分18aにて冷風と合流することなくエアミックスチャンバ18に導かれる。したがって冷風通路16を流下した冷風は、合流部分18aにて温風の温風合流通路21を流れた合流方向Yの上流側からの温風と合流し、さらにエアミックスチャンバ18にて、温風拡散通路24を流れた温風の合流方向Y下流側からの温風とで挟むようになる。また温風合流通路21を流れた温風と冷風との合流部分18aにおける合流によって、合流部分18aおける合流方向Y上流側の温度は合流する温風によって高くなるが、合流部分18aにおける合流方向Y他方側の冷風と温風は混ざりにくい。そこで温風拡散通路を流下した温風が合流部分18aの合流方向Y下流側を流下してエアミックスチャンバ18に導かれるので、温度が低い冷風とエアミックスチャンバ18にて混合させることができる。したがって合流方向Yおよび並び方向Zにおいて、温度分布を均一に近づけることができる。そして混合した空気を空調風として、吹出開口部31~33から車室内に向けて吹き出せることができる。したがって吹出開口部31~33の位置などにかかわらず、混合した空調風を流下させることができる。このように本実施形態の車両用空調装置10では、簡単な構成で、空調ケース12内において冷風と温風との混合性を向上することができる。 As described above, in the vehicle air conditioner 10 of the present embodiment, the hot air that has flowed down the hot air merging passage 21 joins the cold air that has flowed through the cold air passage 16 at the merging portion 18a. The warm air flowing down the warm air tunnel passage 23 is diffused in the alignment direction Z on the downstream side in the warm air merging direction Y of the merging portion 18 a by the warm air diffusion passage 24 and guided to the air mix chamber 18. Since the hot air diffusion passage 24 is partitioned by the joining portion 18a and the partition wall 26, the hot air diffusion passage 24 is guided to the air mix chamber 18 without joining the cold air at the joining portion 18a. Therefore, the cool air flowing down the cool air passage 16 is merged with the warm air from the upstream side in the merge direction Y flowing through the warm air confluence passage 21 in the confluence portion 18a. The hot air flowing through the diffusion passage 24 is sandwiched between hot air from the downstream side Y in the merging direction Y. Further, due to the merging of the warm air and the cold air flowing through the warm air merging passage 21 in the merging portion 18a, the temperature on the upstream side of the merging direction Y in the merging portion 18a is increased by the warm air that is merged. The cold air and hot air on the other side are difficult to mix. Therefore, since the warm air flowing down the warm air diffusion passage flows downstream in the merging direction Y of the merging portion 18a and is guided to the air mix chamber 18, it can be mixed in the air mix chamber 18 with the cold air having a low temperature. Therefore, in the merging direction Y and the arrangement direction Z, the temperature distribution can be made close to uniform. The mixed air can be blown out from the blowout openings 31 to 33 into the passenger compartment as conditioned air. Therefore, the mixed conditioned air can flow down regardless of the positions of the blowout openings 31 to 33. Thus, in the vehicle air conditioner 10 of the present embodiment, the mixability of the cold air and the hot air can be improved in the air conditioning case 12 with a simple configuration.
 また本実施形態では、筒状体23aは並び方向Zに間隔をあけて、複数設けられ、並び方向Zに延びる温風拡散通路24に合流する。したがって温風をより均一に分散して合流部分18aの温風合流方向Y下流側に位置する温風拡散通路24に送ることができる。また合流部分18aは、並び方向Zの間隔であり、温風合流通路21が温風を導く部位は、並び方向Zの間隔である。したがって温風合流通路21が冷風通路16に合流する部分において、並び方向Zの分散させることができる。これによって並び方向Zにおける混合性をより向上することができる。 Further, in the present embodiment, a plurality of cylindrical bodies 23 a are provided at intervals in the arrangement direction Z, and join the hot air diffusion passage 24 extending in the arrangement direction Z. Therefore, the hot air can be more uniformly dispersed and sent to the hot air diffusion passage 24 located downstream of the merging portion 18a in the hot air merging direction Y. Further, the joining portion 18a is an interval in the arrangement direction Z, and a portion where the warm air confluence passage 21 guides the hot air is an interval in the arrangement direction Z. Therefore, it is possible to disperse the arrangement direction Z in the portion where the hot air merging passage 21 merges with the cold air passage 16. Thereby, the mixing property in the arrangement direction Z can be further improved.
 換言すると、本実施形態では、温風グリッド20にて温風を、合流部分18aを貫通させて向こう側の空調ケース12の内壁(壁部27)まで導く。そして、その導かれた温風をケース幅方向である並び方向Zへ分散させる。そして、並び方向Zに分散された温風を、空調ケース12の内壁に沿ってエアミックスチャンバ18に導く。この際、ケース壁面に沿って幅方向へ分散された温風が、冷風によって拡散されないように、温風拡散通路24では温風と冷風とが隔壁26にて仕切られている。そして温風グリッド20は、エアミックスチャンバ18の上流側に位置するので、全ての吹出モードにおいて、温風拡散通路24に導かれた温風が幅方向に分散され、そのままケース壁面に沿って吹出口に導かれる。 In other words, in this embodiment, the warm air is guided by the warm air grid 20 to the inner wall (wall portion 27) of the air conditioning case 12 on the other side through the joining portion 18a. Then, the guided warm air is dispersed in the arrangement direction Z which is the case width direction. Then, the warm air dispersed in the alignment direction Z is guided to the air mix chamber 18 along the inner wall of the air conditioning case 12. At this time, the hot air and the cool air are separated by the partition wall 26 in the hot air diffusion passage 24 so that the hot air dispersed in the width direction along the case wall surface is not diffused by the cool air. Since the hot air grid 20 is located on the upstream side of the air mix chamber 18, the hot air guided to the hot air diffusion passage 24 is dispersed in the width direction in all the blowing modes, and is directly blown along the case wall surface. Guided to the exit.
 これによって空調ケース12の全幅(並び方向Zの全域)から温風が得られるので、並び方向Zにおける温度バラツキを小さくできる。また冷風に対し、温風合流方向Yの前後で温風によって囲う形態になり、混合性が向上するとともに、前後の温度バラツキを小さくできる。 This allows the warm air to be obtained from the entire width of the air conditioning case 12 (the entire region in the alignment direction Z), so that temperature variations in the alignment direction Z can be reduced. Moreover, it becomes the form enclosed with a warm air before and behind the warm air confluence | merging direction Y with respect to a cold wind, and while mixing property improves, the temperature variation before and behind can be made small.
 さらに温風拡散通路24を構成する隔壁26の高さなどの形状を選択することによって、温風拡散通路24からデフロスタ開口部31に流入する空気量を調節することができる。このように温風拡散通路24を構成する壁部27および隔壁26の形状を選択することによって、デフロスタ開口部31と他の開口部との温度差を調整することができる。 Further, by selecting the shape such as the height of the partition wall 26 constituting the hot air diffusion passage 24, the amount of air flowing from the hot air diffusion passage 24 into the defroster opening 31 can be adjusted. In this way, by selecting the shapes of the wall 27 and the partition wall 26 constituting the hot air diffusion passage 24, the temperature difference between the defroster opening 31 and the other openings can be adjusted.
 (その他の実施形態)
 本開示は上述した実施形態に何ら制限されることなく、本開示の主旨を逸脱しない範囲において種々変形して実施することが可能である。
(Other embodiments)
The present disclosure is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present disclosure.
 前述の実施形態では、吹出開口部31~33として、前席用開口部としてのデフロスタ開口部31、フェイス開口部32およびフット開口部33を例として説明したが、後席用のフェイス開口部、フット開口部を備える車両用空調装置10であってもよい。たとえば、前席用開口部と後席用開口部の全ての吹出開口部から同時に空調風を吹き出す場合においても、本開示を適用することで、全ての吹出開口部における吹出空気温度のコントロール特性を同程度に近づけることができる。 In the above-described embodiment, as the blowout openings 31 to 33, the defroster opening 31, the face opening 32, and the foot opening 33 as the front seat opening have been described as examples. However, the rear opening face opening, The vehicle air conditioner 10 provided with a foot opening may be used. For example, even in the case where conditioned air is blown simultaneously from all the blowing openings of the front seat opening and the rear seat opening, by applying the present disclosure, the control characteristics of the blowing air temperature in all the blowing openings can be obtained. It can be close to the same level.
 前述の実施形態では、温風合流通路21を流下した温風が温風トンネル通路23に流入する構成であるがこのような構成に限るものではなく、温風合流通路21と温風トンネル通路23とを並列に設けてもよい。換言すると、ヒータコア14を通過した温風が温風合流通路21と温風トンネル通路23とに分岐するように構成してもよい。 In the above-described embodiment, the hot air flowing down the hot air merging passage 21 flows into the hot air tunnel passage 23, but is not limited to such a configuration, and the hot air merging passage 21 and the hot air tunnel passage 23 are not limited thereto. May be provided in parallel. In other words, the hot air that has passed through the heater core 14 may be branched into the hot air merging passage 21 and the hot air tunnel passage 23.
 前述の実施形態では、1つのエアミックスチャンバ18と1つのエアミックスドア17とを備え、1つのエアミックスチャンバ18から運転席側と助手席側の各吹出開口部に空調風が導かれる構成であったが、運転席側用のエアミックスチャンバおよびエアミックスドアと、助手席側用のエアミックスチャンバおよびエアミックスドアとを備える構成においても本開示を適用できる。この場合、エアミックスチャンバ毎に、温風グリッド20を設置する。 In the above-described embodiment, one air mix chamber 18 and one air mix door 17 are provided, and the conditioned air is guided from one air mix chamber 18 to each of the blowing openings on the driver seat side and the passenger seat side. However, the present disclosure can also be applied to a configuration including an air mix chamber and an air mix door for the driver's seat side and an air mix chamber and an air mix door for the passenger seat side. In this case, the hot air grid 20 is installed for each air mix chamber.
 前述の実施形態では、エアミックス部としてエアミックスドア17が用いられているが、エアミックスドア17に限るものではなく、流路を変更して分配比率を変更する構成であってもよい。またエアミックスドア17として、回転ドアを採用していたが、スライドドア、ロータリドアおよびフィルムドアなどの他の種類のドアを採用しても良い。 In the above-described embodiment, the air mix door 17 is used as the air mix unit. However, the present invention is not limited to the air mix door 17, and the flow rate may be changed to change the distribution ratio. Moreover, although the revolving door was employ | adopted as the air mix door 17, you may employ | adopt other types of doors, such as a slide door, a rotary door, and a film door.
 前述の実施形態では、ヒータコア14はエンジン冷却水を熱源とする構成であるが、このような構成に限るものではなく、他の熱源として、たとえばPTCヒータなどの発熱体を用いてもよい。 In the above-described embodiment, the heater core 14 is configured to use engine cooling water as a heat source. However, the present invention is not limited to such a configuration, and a heating element such as a PTC heater may be used as another heat source.

Claims (3)

  1.  内部に空気通路(15)を形成する空調ケース(12)と、
     前記空調ケース内に空気を送風する送風機と、
     前記空調ケース(12)内に設けられ、前記送風機によって送風される空気を冷却する冷却用熱交換器(13)と、
     前記空調ケース(12)内に設けられ、前記冷却用熱交換器(13)を通過した空気を加熱する加熱用熱交換器(14)と、
     前記空調ケース(12)内に形成され、前記加熱用熱交換器(14)を通過せずに前記冷却用熱交換器(13)を通過した冷風が流れる冷風通路部(16)と、
     前記空調ケース(12)内に形成され、前記加熱用熱交換器(14)を通過した後の温風が流れる温風通路部(21,23,24)と、
     前記空調ケース(12)内に設けられ、前記加熱用熱交換器(14)を通過する空気量と前記冷風通路(13)を流れる空気量とを調整するエアミックス部(17)と、
     前記空調ケース(12)内に設けられ、前記温風通路(21,23,24)からの温風と前記冷風通路部(16)からの冷風とが混合される混合室(18)と、
     前記空調ケース(12)内に設けられ、前記混合室(18)にて混合された空調風を車室内の複数箇所に向けて吹き出す複数の吹出開口部(31~33)と、を含み、
     温風と冷風とは前記混合室内の上流側に位置する合流部分(18a)で合流するように混合室(18)が構成され、
     前記冷風通路部(16)は、前記合流部分(18a)において前記冷風を前記温風に対して交差するように導き、
     前記温風通路部は、
      前記合流部分(18a)に前記温風を導く温風合流通路(21)と、
      前記合流部分(18a)を横断するように配置され前記温風の合流方向に延びる筒状体(23a)の内側に形成される通路であって、前記筒状体(23a)内を流れる温風を前記合流部分に対して前記温風の合流方向下流側へ導く温風トンネル通路(23)と、
      前記混合室(18)および前記温風トンネル通路(23)と連通する通路であって、前記温風トンネル通路(23)を流れてきた温風が流入し、前記合流部分(18a)と前記筒状体とが並ぶ方向であって、前記冷風の流れ方向に交差する並び方向に延びる温風拡散通路(24)と、を有し、
     前記温風拡散通路(24)は、
      前記並び方向および前記冷風の流れ方向に延び、前記合流部分(18a)と前記温風拡散通路(24)とを仕切る第1の壁部(26)と、
      前記並び方向および前記冷風の流れ方向に延び、前記第1の壁部(26)の前記温風の合流方向下流側に間隔をあけて位置する第2の壁部(27)と、
      前記並び方向および前記温風の合流方向に延び、前記第1の壁部(26)と前記第2の壁部(27)との前記冷風の流れ方向上流側に位置する端部を連結する底部(28)と、で囲まれており、
     前記温風拡散通路(24)は、前記温風トンネル通路(23)から流れてきた温風を前記第1の壁部(26)および前記第2の壁部(27)に沿う方向へ導いて、前記混合室(18)に導くように構成されている車両用空調装置。
    An air conditioning case (12) forming an air passage (15) therein;
    A blower for blowing air into the air conditioning case;
    A cooling heat exchanger (13) provided in the air conditioning case (12) for cooling the air blown by the blower;
    A heating heat exchanger (14) that is provided in the air conditioning case (12) and heats the air that has passed through the cooling heat exchanger (13);
    A cold air passage section (16) formed in the air conditioning case (12) and through which the cold air that has passed through the cooling heat exchanger (13) without passing through the heating heat exchanger (14) flows;
    A hot air passage portion (21, 23, 24) formed in the air conditioning case (12) and through which the hot air after passing through the heating heat exchanger (14) flows;
    An air mix section (17) provided in the air conditioning case (12) for adjusting the amount of air passing through the heating heat exchanger (14) and the amount of air flowing through the cold air passage (13);
    A mixing chamber (18) provided in the air conditioning case (12), in which hot air from the hot air passages (21, 23, 24) and cold air from the cold air passage portion (16) are mixed;
    A plurality of outlet openings (31 to 33) provided in the air conditioning case (12) and for blowing the conditioned air mixed in the mixing chamber (18) toward a plurality of locations in the passenger compartment.
    The mixing chamber (18) is configured so that the warm air and the cold air are merged at a merge portion (18a) located on the upstream side of the mixing chamber,
    The cold air passage portion (16) guides the cold air to intersect the warm air at the merge portion (18a),
    The warm air passage is
    A warm air confluence passageway (21) for guiding the warm air to the confluence portion (18a);
    A hot air flowing in the tubular body (23a), which is a passage formed inside the tubular body (23a) that is arranged so as to cross the joining portion (18a) and extends in the joining direction of the warm air. A hot air tunnel passage (23) for guiding the hot air to the downstream side of the merging portion in the merging direction of the warm air
    A passage communicating with the mixing chamber (18) and the hot air tunnel passage (23), in which hot air flowing through the hot air tunnel passage (23) flows in, and the merged portion (18a) and the tube A hot air diffusion passageway (24) extending in the direction in which the rods are aligned and intersecting the flow direction of the cold air,
    The warm air diffusion passage (24)
    A first wall (26) extending in the arrangement direction and the flow direction of the cold air and partitioning the merged portion (18a) and the hot air diffusion passage (24);
    A second wall portion (27) extending in the arrangement direction and the flow direction of the cold air and positioned at a distance downstream of the first wall portion (26) in the direction of the hot air merging;
    A bottom portion extending in the arrangement direction and the merging direction of the warm air, and connecting the end portions of the first wall portion (26) and the second wall portion (27) located on the upstream side in the cold air flow direction. (28)
    The hot air diffusion passage (24) guides the hot air flowing from the hot air tunnel passage (23) in a direction along the first wall portion (26) and the second wall portion (27). A vehicle air conditioner configured to be guided to the mixing chamber (18).
  2.  前記筒状体(23a)は、前記並び方向に間隔をあけて複数設けられる請求項1に記載の車両用空調装置。 The vehicle air conditioner according to claim 1, wherein a plurality of the cylindrical bodies (23a) are provided at intervals in the arrangement direction.
  3.  前記合流部分(18a)には、冷風と温風とを混合室(18)に案内する複数の案内板(25)が複数の前記筒状体(23a)の間に設けられている請求項2に記載の車両用空調装置。 The said junction part (18a) is provided with the some guide plate (25) which guides a cool air and a warm air to a mixing chamber (18) between the said several cylindrical bodies (23a). The vehicle air conditioner described in 1.
PCT/JP2012/002458 2011-05-17 2012-04-09 Air conditioning device for vehicle WO2012157183A1 (en)

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DE112012002115T5 (en) 2014-02-13
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BR112013028166A2 (en) 2017-01-10
CN103534113A (en) 2014-01-22

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