Vehicular air conditioner

Abstract

To provide a vehicular air conditioner that smoothly guides hot air to a defroster outflow port in a blowout mode of opening the defroster outflow port.SOLUTION: In a vehicular air conditioner, a straightening part 50 is provided in a rotary type mode door 20. The straightening part includes: a hot air assembly part formed along a rotation center line Ax; a hot air recovery hole 53h opened on the hot air assembly part; a hot air supply passage in which hot air flowing in from the hot air recovery hole flows; and a hot air supply hole 53d from which the hot air flowing in the hot air supply passage flows out. The straightening part is fitted to a door inflow opening of the mode door. The hot air supply passage linearly extends from the hot air recovery hole to the hot air supply hole. The hot air supply hole faces a defroster outflow port when the mode door is in a rotating position allowing outflow of air from the defroster outflow port 15.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a vehicle air conditioner capable of blowing air into a vehicle compartment. [Background technology]

[0002] Many vehicles are equipped with a vehicle air conditioner to appropriately regulate the temperature inside the vehicle cabin. The vehicle air conditioner includes a blower that draws in air from outside or inside the vehicle cabin and blows it downstream, and a temperature conditioner that adjusts the temperature of the air blown from the blower and blows it into the vehicle cabin. The temperature conditioner includes a housing through which air passes, a cooling heat exchanger that can cool the blown air, a heating heat exchanger that can heat the blown air, and a mix door that adjusts the ratio of air that passes through the heating heat exchanger and air that bypasses the heating heat exchanger.

[0003] The housing has a vent outlet that blows air toward the upper body of the occupant, a foot outlet that blows air toward the feet of the occupant, and a defroster outlet that blows air toward the windshield. A mode door is provided to adjust the amount of air blown out from these outlets. A rotary door is known as the mode door, which rotates around a rotation axis and allows air to be blown out by connecting communication ports provided on the door closing surface to the respective outlets in the housing.

[0004] For example, the rotary door disclosed in Patent Document 1 has an internal space surrounded by the door closing surface and the door side wall, partition walls that divide the axial direction of the rotary shaft into multiple sections, and baffles and guides provided in parts of the internal space divided by the partition walls. The positions of the baffles and guides change depending on the rotation position of the rotary door.

[0005] The guide portion shown in Patent Document 1 is positioned so as to follow the flow toward the vent outlet and foot outlet in bi-level mode, thereby enabling the conditioned air flowing through the interior space of the rotary door to be smoothly supplied to the vent outlet and foot outlet.

[0006] On the other hand, the guide portion is positioned so as to extend horizontally in the defroster mode and the defroster mode. The conditioned air flowing through the interior space of the rotary door is moved horizontally by the guide portion. Here, the guide portion has an outlet located below the defroster outlet. Therefore, the conditioned air flowing horizontally changes direction and flows toward the defroster outlet located above the rotary door. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-160459 Summary of the Invention [Problem to be solved by the invention]

[0008] Therefore, in the defroster mode and the defroster mode, the ventilation resistance of the conditioned air directed toward the defroster outlet increases, and there is a risk that a sufficient air volume will not be obtained from there.

[0009] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a vehicle air conditioner that smoothly guides warm air to the defroster outlet in a blowing mode in which the defroster outlet is open. [Means for solving the problem]

[0010] In the following description, reference numerals in the accompanying drawings are placed in parentheses to facilitate understanding of the present invention, but the present invention is not limited to the illustrated forms.

[0011] According to the present disclosure, a vehicle air conditioning device for adjusting the temperature of a passenger compartment (CR) of a vehicle includes a housing (11) having an interior space (IS) and a plurality of outlets (15, 16, 17) for blowing out air that has passed through the interior space (IS), a cooling heat exchanger (12) arranged in the interior space (IS) and capable of discharging air as cool air, a heating heat exchanger (13) capable of discharging air that has flowed out of the cooling heat exchanger (12) as warm air, and a mixing device capable of changing the ratio of air flowing into the heating heat exchanger (13) and air bypassing the heating heat exchanger (13). a rotary mode door (20) rotatably supported on the housing and capable of adjusting the opening degree of a plurality of outlets (15, 16, 17); and a rectifying section (50) through which a part of the hot air flowing out of the heating heat exchanger (13) flows, and the housing (11) has a cold air region (CP) through which the cold air flowing out of the cooling heat exchanger (12) flows, a hot air region (HP) through which the hot air flowing out of the heating heat exchanger (13) flows, and a mixing region (MP) capable of mixing the cold air and the hot air, and the mode door (20) is provided in the mixing region (MP). a rotation axis (33) disposed in the door and extending along the rotation center line (Ax); a pair of fan-shaped door side portions (31) extending from the rotation axis (33) in a direction intersecting the rotation center line (Ax); a door peripheral portion (32) formed away from the rotation center line (Ax) and connecting radial end sides of the pair of door side portions (31); a door internal space (23) surrounded by the pair of door side portions (31) and the door peripheral portion (32); a door inlet opening (21) for taking air from a mixing region (MP) into the door internal space (23); and a door outlet opening (22) for discharging air to the plurality of outlets (15, 16, 17), the plurality of outlets (15, 16, 17) including a defroster outlet (15) for supplying air to a front window in the vehicle interior (CR), a vent outlet (16) for supplying air to an upper space in the vehicle interior (CR), and a foot outlet (17) for supplying air to a lower space in the vehicle interior (CR), and the rectifying section (50) includes a hot air collecting section (51) formed along the rotation center line (Ax), and hot air collecting holes (53h, 54h,and a hot air supply passage (52) through which hot air flowing in from the hot air recovery holes (53h, 54h, 55h) flows, and hot air supply holes (53d, 54d, 55d) through which the hot air flowing in from the hot air recovery holes (53d, 54d, 55d) flows out, the hot air supply passage (52) is attached to a door inlet opening (21) of a mode door (20), the hot air supply passage (52) extends linearly from the hot air recovery holes (53h, 54h, 55h) to the hot air supply holes (53d, 54d, 55d), and when the mode door (20) is in a rotation position that allows air to flow out from the defroster outlet (15), the hot air supply holes (53d, 54d, 55d) face the defroster outlet (15).

[0012] The hot air supply passage (52) is positioned so that the hot air supply holes (53d, 54d, 55d) face the defroster outlet (15) in the defrost-foot mode. Furthermore, the hot air supply passage (52) extends linearly from the hot air recovery hole to the hot air supply hole. Therefore, the air flowing through the hot air supply passage (52) is guided to the defroster outlet (15) without changing its flow direction. In other words, a portion of the hot air can be smoothly guided to the defroster outlet (15) without a significant increase in passage resistance.

[0013] For example, the angle (α) formed by the flow direction (H2i) of the hot air flowing from the hot air region (HP) to the mixing region (MP) and the extension direction (Ps) of the hot air supply path (52) is an acute angle. Therefore, the conditioned air flowing through the hot air supply path (52) can be prevented from making an extreme change in the flow direction when it flows from the hot air region (HP) into the hot air supply path (52), and can smoothly flow in through the hot air recovery holes (53d, 54d, 55d).

[0014] According to the present disclosure, a vehicle air conditioning device for adjusting the temperature of a passenger compartment (CR) of a vehicle includes a housing (11) having an interior space (IS) and a plurality of outlets (15, 16, 17) for blowing out air that has passed through the interior space (IS), a cooling heat exchanger (12) arranged in the interior space (IS) and capable of discharging air as cool air, a heating heat exchanger (13) capable of discharging air that has flowed out of the cooling heat exchanger (12) as warm air, and a mixing device capable of changing the ratio of air flowing into the heating heat exchanger (13) and air bypassing the heating heat exchanger (13). a rotary mode door (20) rotatably supported on the housing and capable of adjusting the opening degree of a plurality of outlets (15, 16, 17); and a rectifying section (50) through which a part of the hot air flowing out of the heating heat exchanger (13) flows, and the housing (11) has a cold air region (CP) through which the cold air flowing out of the cooling heat exchanger (12) flows, a hot air region (HP) through which the hot air flowing out of the heating heat exchanger (13) flows, and a mixing region (MP) capable of mixing the cold air and the hot air, and the mode door (20) is provided in the mixing region (MP). a rotation axis (33) disposed in the door and extending along the rotation center line (Ax); a pair of fan-shaped door side portions (31) extending from the rotation axis (33) in a direction intersecting the rotation center line (Ax); a door peripheral portion (32) formed away from the rotation center line (Ax) and connecting radial end sides of the pair of door side portions (31); a door internal space (23) surrounded by the pair of door side portions (31) and the door peripheral portion (32); a door inlet opening (21) for taking air from a mixing region (MP) into the door internal space (23); and a door outlet opening (22) for discharging air to the plurality of outlets (15, 16, 17), the plurality of outlets (15, 16, 17) including a defroster outlet (15) for supplying air to a front window in the vehicle interior (CR), a vent outlet (16) for supplying air to an upper space in the vehicle interior (CR), and a foot outlet (17) for supplying air to a lower space in the vehicle interior (CR), and the rectifying section (50) includes a hot air collecting section (51) formed along the rotation center line (Ax), and hot air collecting holes (53h, 54h,and a hot air supply passage (52) through which hot air flowing in from the hot air recovery holes (53h, 54h, 55h) flows, and hot air supply holes (53d, 54d, 55d) through which the hot air flowing in from the hot air recovery holes (53d, 54d, 55d) flows out, the hot air supply passage (52) is attached to a door inlet opening (21) of a mode door (20), the hot air supply passage (52) is curved from the hot air recovery holes (53h, 54h, 55h) to the hot air supply holes (53d, 54d, 55d), and when the mode door (20) is in a rotation position that allows air to flow out from the defroster outlet (15), an upstream portion of the hot air supply passage that is continuous with the hot air recovery holes (53h, 54h, 55h) faces the hot air region (HP), and the hot air supply holes (53d, 54d, 55d) face the defroster outlet (15).

[0015] The hot air supply passage (52) is positioned so that the hot air supply holes (53d, 54d, 55d) face the defroster outlet (15) in the defroster-foot mode. Furthermore, the hot air supply passage (52) is curved from the hot air recovery holes to the hot air supply holes (53d, 54d, 55d). Therefore, the conditioned air flowing through the hot air supply passage (52) is guided to the defroster outlet (15) without any local change in its flow direction. In other words, a portion of the hot air can be smoothly guided to the defroster outlet (15) without a significant increase in ventilation resistance.

[0016] The hot air supply passage (52) has a central hot air supply passage (54), a first side hot air supply passage (53) provided on one side of the central hot air supply passage (54) in the direction along the rotation center line (Ax), and a second side hot air supply passage (55) provided on the other side of the central hot air supply passage (54) in the direction along the rotation center line (Ax), and it is preferable that the central hot air supply passage (54) has a larger cross-sectional area than the first side hot air supply passage (53) and the second side hot air supply passage (55). This allows hot air to be supplied to the defroster outlet (15) more smoothly.

[0017] Alternatively, the hot air collecting section (51) is preferably formed in a concave shape with respect to the flow direction (H2i) of the hot air flowing from the hot air region (HP) to the mixing region (MP). The hot air can be efficiently collected in the hot air collecting section (51) and passed through the hot air supply passage (52).

[0018] Alternatively, the hot air supply passage (52) includes a central hot air supply passage (54), a first side hot air supply passage (253) provided on one side of the central hot air supply passage (54) in the direction along the rotation center line (Ax), and a second side hot air supply passage (255) provided on the other side of the central hot air supply passage (54) in the direction along the rotation center line (Ax), and the hot air collection holes (53h, 54h, 55h) include a central hot air collection hole (54h) through which hot air flows into the central hot air supply passage (54), a first side hot air collection hole (53h) through which hot air flows into the first side hot air supply passage (253), and a second side hot air collection hole (55h) through which hot air flows into the second side hot air supply passage (255), The hot air supply holes (253d, 54d, 255d) include a central hot air supply hole (54d) through which hot air flows out from the central hot air supply path (54), a first side hot air supply hole (253d) through which hot air flows out from the first side hot air supply path (253), and a second side hot air supply hole (255d) through which hot air flows out from the second side hot air supply path (255), and it is preferable that the first side hot air supply hole (253d) is provided on one side of the first side hot air recovery hole (53h) in the direction along the rotation center line (Ax), and the second side hot air supply hole (255d) is provided on the other side of the second side hot air recovery hole (55h) in the direction along the rotation center line (Ax). The first side hot air supply passage (253) and the second side hot air supply passage (255) are formed to widen in the direction along the rotation center line (Ax) of the mode door (20). Therefore, hot air can be blown out along the fan-shaped shape of the defroster outlet (15), and therefore hot air can be smoothly supplied to the defroster outlet (15). [Effects of the Invention]

[0019] The present invention can provide a vehicle air conditioner that smoothly guides warm air to the defroster outlet in a blowing mode in which the defroster outlet is open. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a perspective view of a vehicle air conditioner according to a first embodiment that is disposed in a vehicle. [Figure 2] 2 is a cross-sectional view of the temperature conditioner of the vehicle air conditioner of the first embodiment taken along the line 2-2 in FIG. 1. [Figure 3] 2 is a perspective view of a mode door in the vehicle air conditioner of the first embodiment. FIG. [Figure 4] 2 is an exploded view of a mode door in the vehicle air conditioner of the first embodiment. FIG. [Figure 5] 3 is a cross-sectional view showing the flow of warm air in a defroster / foot mode in the air conditioner for a vehicle according to the first embodiment. FIG. [Figure 6] 3 is a perspective view showing the flow of warm air at a mode door in the vehicle air conditioner of the first embodiment. FIG. [Figure 7] 7 is a cross-sectional view of the rectifying portion of the first embodiment taken along the line 7-7 in FIG. 3. [Figure 8] 4 is a cross-sectional view showing the flow of warm air in the cold air suppression cross section of FIG. 3 in a defroster-foot mode in the first embodiment. FIG. [Figure 9] 4 is a cross-sectional view showing the flow of hot air in a defroster-foot mode in the normal cross section of FIG. 3 according to the first embodiment. FIG. [Figure 10] 3 is a cross-sectional view showing the flow of warm air in the vent mode in the vehicle air conditioner of the first embodiment. FIG. [Figure 11] 3 is a cross-sectional view showing the flow of warm air in the vehicle air conditioner of the first embodiment in a bi-level mode. FIG. [Figure 12] 3 is a cross-sectional view showing the flow of warm air in a foot mode in the vehicle air conditioner of the first embodiment. FIG. [Figure 13] 3 is a cross-sectional view showing the flow of warm air in a defrost mode in the air conditioner for a vehicle according to the first embodiment. FIG. [Figure 14] FIG. 10 is a cross-sectional view showing the flow of warm air in a defroster / foot mode in a vehicle air conditioner according to a second embodiment. [Figure 15] FIG. 10 is a perspective view showing a mode door in a vehicle air conditioner according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0021] The embodiments will be described with reference to the accompanying drawings. In the drawings, Fr indicates front, Rr indicates rear, Le indicates left, Ri indicates right, Up indicates top, and Dn indicates bottom. Note that these directions are used for convenience in describing the automotive air conditioner described below, and do not limit the orientation of the automotive air conditioner when installed in a vehicle.

[0022] Example 1 A first embodiment will be described with reference to Figures 1 to 13. Figure 1 shows a perspective view of a vehicle air conditioner 1 as seen from the vehicle interior CR. The vehicle air conditioner 1 is mounted in the vehicle interior CR of a passenger car, for example, and takes in air from outside the vehicle interior CR and adjusts the temperature. The vehicle air conditioner 1 includes a blower 90 that blows out the drawn-in air, and a temperature conditioner 10 that conditions the temperature of the air blown from the blower 90 and blows out the conditioned air into the vehicle interior CR.

[0023] The blower 90 has an inside / outside air switching unit 91 with an intake door (not shown) that switches between introducing air from outside the vehicle cabin or the interior CR of the vehicle cabin, and downstream of the intake door, a scroll case 92 that houses an impeller (not shown), and a motor 93 that drives the impeller. The intake door selects the air from outside the vehicle cabin or the interior CR of the vehicle cabin, and the air is taken into the inside / outside air switching unit 91 by the rotation of the impeller, passes through the scroll case 92, and is sent from the blower 90 to the temperature conditioner 10.

[0024] Please refer to Figures 1 and 2. Figure 2 is a cross-sectional view of a temperature conditioner 10. The temperature conditioner 10 has a housing 11 having an internal space IS to which air is blown from an air blower 90 and a plurality of outlets 15, 16, and 17 from which air that has passed through the internal space IS is blown out, a cooling heat exchanger 12 that is disposed in the internal space IS and can discharge air as cool air, a heating heat exchanger 13 that can discharge air that has flowed out of the cooling heat exchanger 12 as warm air, and a mix door 14 that can change the ratio of air flowing into the heating heat exchanger 13 and air that bypasses the heating heat exchanger 13.

[0025] The housing 11 is connected to a blower 90. The air sent from the blower 90 flows from the front to the rear of the interior space IS.

[0026] The housing 11 has a cold air area CP through which cold air flowing out of the cooling heat exchanger 12 flows, a hot air area HP through which hot air flowing out of the heating heat exchanger 13 flows, and a mixing area MP capable of mixing the cold air and the hot air, and also has a plurality of control openings 151, 161, 171 connected to the downstream end of the mixing area MP and through which air flows out toward a plurality of outlets 15, 16, 17.

[0027] The multiple outlets 15, 16, 17 include a defroster outlet 15 for supplying air to the front window of the vehicle interior CR, a vent outlet 16 for supplying air to an upper space in the vehicle interior CR, and a foot outlet 17 for supplying air to a lower space in the vehicle interior CR. The vent outlet 16 has a center vent outlet 16a for supplying air toward the center in the vehicle width direction and a side vent outlet 16b for supplying air toward the sides in the vehicle width direction, and the foot outlet 17 has a front seat foot outlet 17a for supplying air toward the front of the vehicle interior CR and a rear seat foot outlet 17b for supplying air toward the rear of the vehicle interior CR.

[0028] The multiple control openings 151, 161, 171 include a defroster control opening 151 through which air flows out from the mixing region MP toward the defroster outlet 15, a vent control opening 161 through which air flows out toward the vent outlet 16, and a foot control opening 171 through which air flows out toward the foot outlet 17.

[0029] The cooling heat exchanger 12 is disposed in the internal space IS. For example, a refrigerant flows through the cooling heat exchanger 12, and the cooling heat exchanger 12 can cool the blown air sent from the blower 90 by absorbing the heat of the air. The medium passing through the cooling heat exchanger 12 is not limited to the refrigerant, and may be another heat medium.

[0030] The heating heat exchanger 13 is disposed downstream of the cooling heat exchanger 12 in the internal space IS. For example, the blown air can be heated by a heat medium flowing inside the heat exchanger 13 heating the blown air. The heat medium may be engine cooling water or hot water heated by an electric heating wire (not shown). Alternatively, the heating heat exchanger 13 is not limited to a form in which a heat medium flows inside the heat exchanger 13. In other words, the heating heat exchanger 13 itself may generate heat electrically and release the heat to the blown air. The number of heating heat exchangers 13 is not limited to one, and multiple heat exchangers 13 may be provided.

[0031] The mix door 14 is slidably disposed between the cold air region CP and the mixing region MP, and between the hot air region HP and the mixing region MP. The mix door 14 is, for example, a rotary door that rotates coaxially with the mode door 20. Depending on the opening degree of the mix door 14, it is possible to adjust the position among a full cool position that allows only cold air to flow through the cold air region CP, a full hot position that allows only hot air to flow through the hot air region HP, and a mix position that allows both cold air to flow through the cold air region CP and hot air to flow through the hot air region HP.

[0032] Next, the mode door 20 will be described. The mode door 20 is rotatably supported by the housing 11 and is provided so as to rotate within the mixing region MP. The mode door 20 is a rotary door that rotates coaxially with the mix door 14, for example.

[0033] Reference is made to FIGS. 3 and 4. 3A and 3B of FIG. 3 are diagrams showing the mode door 20 alone. FIG. 4 is an exploded view of the mode door 20. The mode door 20 has a door internal space 23, a door inlet opening 21 that takes in air from the mixing region MP into the door internal space 23, and a door outlet opening 22 through which air flows out from the door internal space 23 to the multiple outlets 15, 16, and 17. The mode door 20 also has a door main body 30, a seal member 40, and a flow straightening section 50. The door main body 30 has a rotation axis 33 extending along the rotation center line Ax, a pair of fan-shaped door side surfaces 31 that extend from the rotation axis 33 in a direction intersecting the rotation center line Ax, and a door peripheral surface 32 that is formed away from the rotation center line Ax and connects the radially shorter sides of the pair of door side surfaces 31. The door internal space 23 is a space surrounded by the door side surfaces 31 and the door peripheral surface 32. The seal member 40 is provided on the outer peripheral surface of the door peripheral portion 32. The seal member 40 is divided by the door outlet opening 22 and has a first seal 41 provided on a first door peripheral end portion 321 side located on one side of the end portion of the door peripheral portion 32 facing the door inlet opening 21, and a second seal 42 provided on a second door peripheral end portion 322 side located on the opposite side of the rotation center line Ax from the first door peripheral end portion 321.

[0034] The rectifying section 50 is provided near the door inlet opening 21. The rectifying section 50 has a hot air collecting section 51 formed along the rotation center line Ax, hot air collection holes 53h, 54h, and 55h that open to the hot air collecting section 51, a hot air supply path 52 through which the hot air that has flowed in from the hot air collection holes 53h, 54h, and 55h flows, and hot air supply holes 53d, 54d, and 55d through which the hot air that has flowed through the hot air supply path 52 flows out. The hot air collecting section 51 is provided on the first door circumferential surface end 321 side, and the hot air supply holes 53d, 54d, and 55d are provided on the second door circumferential surface end 322 side.

[0035] The hot air collecting section 51 is formed in a concave shape with respect to the flow direction H2i of the hot air flowing from the hot air region HP to the mixing region MP. In other words, the hot air collecting section 51 has a first collecting surface 511 that is located on the same plane as the door inlet opening 21 and blocks a portion of the door inlet opening 21, a second collecting surface 512 that extends from the door inlet opening 21 to the side opposite the door internal space 23, and an apex 513 where the first collecting surface 511 and the second collecting surface 512 intersect. The hot air recovery holes 53h, 54h, and 55h are located across the first collecting surface 511, the apex 513, and the second collecting surface 512.

[0036] The hot air collection holes 53h, 54h, 55h include a first side hot air collection hole 53h, a central hot air collection hole 54h, and a second side hot air collection hole 55h, which are spaced apart from each other in the direction along which the rotation center line Ax extends.

[0037] The hot air supply passage 52 has a central hot air supply passage 54 through which hot air flowing in from the central hot air collection hole 54h flows, a first lateral hot air supply passage 53 provided on one side of the central hot air supply passage 54 in the direction along the rotation center line Ax and through which hot air flowing in from the first lateral hot air collection hole 53h flows, and a second lateral hot air supply passage 55 provided on the other side of the central hot air supply passage 54 in the direction along the rotation center line Ax and through which hot air flowing in from the second lateral hot air collection hole 55h flows. The hot air supply passage 52 also has an internal space 54p of the central hot air supply passage 54, an internal space 53p of the first lateral hot air supply passage 53, and an internal space 55p of the second lateral hot air supply passage 55, through which hot air collected at the hot air collection holes 53d, 54d, and 55d flows. The hot air supply paths 52 are provided at intervals in a direction along the rotation center line Ax, and extend linearly from the hot air recovery holes 53h, 54h, 55h in a direction intersecting with the rotation center line Ax.

[0038] 7, the central hot air supply passage 54 is set to have a larger cross-sectional area than the first side hot air supply passage 53 and the second side hot air supply passage 55. The width W54 of the central hot air supply passage 54 is formed to be wider than the width W53 of the first side hot air supply passage 53 and the width W55 of the second side hot air supply passage 55.

[0039] 3 and 4. In the direction intersecting the rotation center line Ax, on the opposite side to the hot air collection holes 53h, 54h, 55h, hot air supply holes 53d, 54d, 55d are provided through which hot air flows out after passing through the hot air supply path 52. The hot air supply holes 53d, 54d, 55d consist of a first side hot air supply hole 53d, a central hot air supply hole 54d, and a second side hot air supply hole 55d, and are provided apart from each other in the direction along the rotation center line Ax.

[0040] The rectifying section 50 further includes a cold air suppressing section 56 that connects the plurality of hot air supply paths on the side where the hot air supply holes 53d, 54d, and 55d are provided.

[0041] The operation of the vehicle air conditioner 1 explained above will now be described.

[0042] <Deaf Foot Mode> Refer to Figure 2. Air sent from the blower 90 (see Figure 1) flows through the internal space IS of the temperature conditioner 10 and passes through the cooling heat exchanger 12. The air that has passed through the cooling heat exchanger 12 becomes cold air and flows through the cold air area CP. When the mix door 14 is in the mix position, some of the cold air C1 flows toward the heating heat exchanger 13, and the remaining cold air C2 flows toward the mixing area MP. The cold air C1 that flows toward the heating heat exchanger 13 is heated as it passes through the heating heat exchanger 13 and becomes hot air H1. The hot air H1 flows through the hot air area HP, becomes hot air H2, and flows toward the mixing area MP.

[0043] Please refer to Figures 5, 8, and 9. Figures 5, 8, and 9 are all cross-sectional views showing the rotational position of the mode door 20 and the air flow in the defroster-foot mode. In the defroster-foot mode, the mode door 20 is in a position that opens the defroster outlet 15 and the foot outlet 17 and closes the vent outlet 16. More specifically, the defroster control opening 151 is partially open due to the presence of the second peripheral end 322 of the mode door 20. The vent control opening 161 is closed due to the presence of the door peripheral portion 32 and the second seal 42 (see Figure 3) of the mode door 20. The foot control opening 171 is partially open due to the presence of the door outlet opening 22.

[0044] At this time, the mix door 14 is in the mix position as described above, so that the cold air C2 flowing through the cold air region CP and the hot air H2 flowing through the hot air region HP flow into the mixing region MP.

[0045] Here, the cross sections of the vehicle air conditioner 1 can be divided into three types. See Figures 3 and 4. In the direction along the rotation center line Ax of the mode door 20, there are a normal cross section taken between the door side surface portion 31 and the first side warm air supply passage 53 or between the second side warm air supply passage 55 and the door side surface portion 31, a supply passage cross section taken at the warm air supply passage 52, and a cold air suppression cross section taken between the first side warm air supply passage 53 and the central warm air supply passage 54 or between the central warm air supply passage 54 and the second side warm air supply passage 55. Figure 9 shows the normal cross section, Figure 5 shows the supply passage cross section, and Figure 8 shows the cold air suppression cross section.

[0046] The air flow at the normal cross section will be described with reference to Figure 9. One side of the warm air H2 that flows into the mixing region MP bypasses the warm air collection section 51, or if collected in the warm air collection section 51, bypasses the warm air recovery holes 53h, 54h, and 55h, and flows into the door interior space 23 through the door inlet opening 21 to become warm air H3. The other side becomes warm air H4a that passes through the inside of the mix door 14. The warm air H4a is mixed with a portion of the cold air C2 that flows into the mixing region MP from the cold air region CP to become mixed air M1. The mixed air M1 passes through the defroster control opening 151 to become defroster blown air D1 and is blown out from the defroster outlet 15.

[0047] The remaining part of the cold air C2 becomes cold air C3 and flows into the door internal space 23 through the door inlet opening 21. The warm air H3 mixes with the cold air C3 and becomes foot blown air F1 through the door outlet opening 22 and the foot control opening 171, and is blown out from the foot outlet 17.

[0048] At this time, the mixed air M1 has a relatively low temperature because the cold air and the hot air are mixed near the cold air region CP, whereas the foot blown air F1 has a relatively high temperature because the cold air and the hot air are mixed nearer to the hot air region HP than the mixed air M1.

[0049] The air flow at the cold air suppression cross section will be described with reference to Figure 8. The difference from the normal cross section is that the cold air suppression portion 56 extends from the second peripheral end portion 322. The cold air suppression portion 56 is positioned so as to close the defroster control opening 151 in the defroster foot mode.

[0050] The warm air H2 that flows from the warm air region HP into the mixing region MP is separated into warm air H3 and warm air H4a, just as in the normal cross section. The warm air H4a passes through the inside of the mix door 14 and mixes with the cold air C2, but the cold air suppression unit 56 blocks the defroster control opening 151, suppressing the air flow toward the defroster outlet 15. The warm air H3 mixes with the cold air C3 and becomes foot blown air F1 through the foot control opening 171, which is then blown out from the foot outlet 17.

[0051] In the cold air suppression cross section, the defroster control opening 151 is closed by the cold air suppression portion 56, so that the mixed air M1 (see FIG. 9) and the cold air C2 having a relatively low temperature are prevented from being blown out from the defroster outlet 15.

[0052] The air flow at the supply path cross section will be described with reference to Figures 5 and 6. The difference from the normal cross section and the cold air suppression cross section is that a hot air supply path 52 is provided. In Figure 5, the first side hot air supply path 53 is shown as a representative of the hot air supply path 52. Figure 6 is a diagram showing the air flow direction at the mode door 20.

[0053] The warm air H2 that flows into the mixing region MP flows toward the warm air collection section 51 and collides with the first collection section surface 511 and the second collection section surface 512. The hot air that collides in the warm air collection section 51 is collected and flows into the first side hot air supply path 53 through the first side hot air collection hole 53h. The first side hot air collection hole 53h is provided at the top 513 where the first collection section surface 511 and the second collection section surface 512 intersect (the first side hot air collection hole 53h is formed across the first collection section surface 511 and the second collection section surface 512), so that the warm air H2 can be efficiently collected. The warm air that bypasses the hot air collection holes 53h, 54h, and 55h becomes warm air H3 and hot air H4a, as in the other cross sections, and is mixed with the cold air C2.

[0054] When the warm air H2 passes through the first side hot air recovery hole 53h and becomes hot air H5a, the flow direction of the warm air is changed. Specifically, the flow direction H2i of the warm air flowing from the warm air region HP to the mixing region MP is changed to the direction Ps along which the warm air supply path 52 extends. In this embodiment, the flow direction H2i of the warm air flowing from the warm air region HP to the mixing region MP is substantially vertical to the vehicle air conditioner 1, and the direction Ps along which the warm air supply path 52 extends is a direction from the vicinity of the warm air region HP toward the defroster control opening 151, that is, a direction from rearward and downward to forward and upward. At this time, the angle α between the flow direction H2i of the warm air flowing from the warm air region HP to the mixing region MP and the direction Ps along which the first side hot air supply path 53 extends is an acute angle. This prevents an extreme change in flow direction when the warm air H2 flows into the first side hot air recovery hole 53h and becomes hot air H5a, thereby reducing ventilation resistance.

[0055] The warm air H5a that flows into the first side warm air supply passage 53 from the first side warm air recovery hole 53h flows through the internal space 53p of the first side warm air supply passage 53 along the extension direction of the first side warm air supply passage 53 and flows out from the first side warm air supply hole 53d. In the defrost-foot mode, the first side warm air supply hole 53d is located near the defroster control opening 151, so the warm air H5c that flows out from the first side warm air supply hole 53d smoothly passes through the defroster control opening 151 to become defroster blown air D1 and is blown out from the defroster outlet 15.

[0056] The warm air H5b that flows into the first lateral warm air recovery hole 53h and passes through the internal space 53p of the first lateral warm air supply path 53 becomes warm air H5c that flows out from the first lateral warm air supply hole 53d without mixing with the cold air C2, and is therefore supplied to the defroster outlet 15 without a decrease in temperature.

[0057] 5, the cross section of the first side hot air supply passage 53 has been described, but the cross sections of the central side hot air supply passage 54 and the second side hot air supply passage 55 are similar to the first side hot air supply passage 53.

[0058] The temperature of the air blown out from each outlet will be described with reference to Figures 5, 8, and 9. From the defroster control opening 151, mixed air M1, which is a mixture of warm air H2 and cold air C2, flows out in the normal cross section, and the outflow of mixed air M1 is suppressed by the cold air suppression section 56 in the cold air suppression cross section. In the supply path cross section, warm air H5c flows out from the warm air supply holes 53d, 54d, and 55d. In particular, the cross-sectional area of ​​the central warm air supply path 54 of the warm air supply path 52 is set large. Therefore, hot air gathers in the central portion in the direction along the rotation center line Ax of the mode door 20, thereby suppressing fogging in the central portion of the windshield.

[0059] The vent control opening 161 is closed at all cross sections by the door peripheral portion 32 and the second seal 42. Therefore, the outflow of air from the vent outlet 16 through the vent control opening 161 is restricted.

[0060] The foot blown air F1 flowing out from the foot control opening 171 is a mixture of the warm air H3 and the cool air C3 at any cross section. Therefore, the foot blown air F1 flows out at a lower temperature than the defroster blown air D1 flowing out from the defroster control opening 151.

[0061] For these reasons, in the defroster foot mode, warm air can be smoothly guided to the defroster outlet 15, and high-temperature defroster blown air D1 is supplied toward the front windshield of the vehicle interior.

[0062] In this embodiment, the operation when the mix door 14 is in the mix position has been described, but the mix door 14 may also be in the full hot position. In this case, only the warm air H2 flowing through the warm air region HP flows into the mixing region MP. In the supply path cross section, as when the mix door 14 is in the mix position, the warm air H2 flows into the warm air supply path 52, and high-temperature defroster blown air D1 can be supplied to the defroster outlet 15 via the warm air supply holes 53d, 54d, and 55d and the defroster control opening 151.

[0063] <Vent mode> The air flow in vent mode will be described with reference to FIG. 10. FIG. 10 shows a cross section of the supply path. In vent mode, the mode door 20 opens the vent outlet 16 and closes the defroster outlet 15 and the foot outlet 17. More specifically, the vent control opening 161 is opened by the presence of the door outlet opening 22 of the mode door 20. On the other hand, the defroster control opening 151 and the foot control opening 171 are closed by the presence of the door peripheral surface portion 32 of the mode door 20 and the first seal 41 or the second seal 42 (see FIG. 3). In the rectification section 50, the hot air supply holes 53d, 54d, and 55d (see FIG. 3) face the cool air region CP, and the hot air collection section 51 and the hot air collection holes 53h, 54h, and 55h (see FIG. 3) are located in the mixing region MP.

[0064] At this time, the mix door 14 is in the full cool position, so that only the cold air C2 flowing through the cold air region CP flows into the mixing region MP.

[0065] The cold air C2 that has flowed into the mixing area MP bypasses the hot air supply path 52 of the rectification section 50, flows through the door inlet opening 21 of the mode door 20, and enters the door internal space 23, where it becomes cold air C3. The cold air C3 passes through the door outlet opening 22 and the vent control opening 161, becomes vent blown air V1, and is blown out from the vent outlet 16.

[0066] Therefore, in the vent mode, low-temperature vent air V1 is supplied toward the upper body of the occupant.

[0067] <Bi-level mode> The air flow in the bi-level mode will be described with reference to Figure 11. Figure 11 shows a cross section of the supply path. In the bi-level mode, the mode door 20 opens the vent outlet 16 and the foot outlet 17 and closes the defroster outlet 15. More specifically, the door outlet opening 22 of the mode door 20 is positioned so as to communicate with a portion of the vent control opening 161 and a portion of the foot control opening 171, thereby opening the vent control opening 161 and the foot control opening 171. On the other hand, the defroster control opening 151 is closed by the door peripheral portion 32 of the mode door 20 and the second seal 42 (see Figure 3). The entire rectification section 50 is located within the mixing region MP.

[0068] At this time, the mix door 14 is in the mix position, so that the cold air C2 flowing through the cold air region CP and the hot air H2 flowing through the hot air region HP flow into the mixing region MP.

[0069] The cold air C2 that flows into the mixing area MP bypasses the hot air supply path 52 of the rectifier 50, flows into the door internal space 23 through the door inlet opening 21 of the mode door 20, and becomes cold air C3. In addition, the warm air H2 that flows into the mixing area MP bypasses the hot air collecting section 51 and the hot air supply path 52 of the rectifier, flows into the door internal space 23 through the door inlet opening 21, and becomes warm air H3. The cold air C3 and the warm air H3 mix to become vent blown air V1 and foot blown air F1, which are blown out from the vent outlet 16 and the foot outlet 17, respectively.

[0070] Therefore, in the bi-level mode, temperature-adjusted vent air V1 and foot air F1 are supplied toward the upper body and feet of the occupant.

[0071] <Foot mode> The air flow in foot mode will be described with reference to Figure 12. Figure 12 shows a cross section of the supply path. In foot mode, the mode door 20 opens the foot outlet 17 and closes the defroster outlet 15 and the vent outlet 16. More specifically, the foot control opening 171 is opened by the presence of the door outlet opening 22 of the mode door 20. On the other hand, the defroster control opening 151 and the vent control opening 161 are closed by the presence of the door peripheral portion 32 of the mode door 20 and the second seal 42 (see Figure 3). The entire rectification section 50 is located within the mixing region MP.

[0072] At this time, the mix door 14 is in the full hot position, so that only the hot air H2 flowing through the hot air region HP flows into the mixing region MP.

[0073] The warm air H2 that has flowed into the mixing area MP bypasses the warm air supply path 52 of the rectification section 50, flows through the door inlet opening 21 of the mode door 20, and enters the door internal space 23, where it becomes warm air H3. The warm air H3 passes through the door outlet opening 22 and the foot control opening 171, becomes foot blown air F1, and is blown out from the foot outlet 17.

[0074] Therefore, in the foot mode, high-temperature foot outlet air F1 is supplied toward the feet of the occupant.

[0075] <Defroster mode> The air flow in the defroster mode will be described with reference to Figure 13. Figure 13 shows a cross section of the supply path. In the defroster mode, the mode door 20 opens the defroster outlet 15 and closes the vent outlet 16 and the foot outlet 17. More specifically, the second peripheral end 322 of the mode door 20 is positioned between the defroster control opening 151 and the vent control opening 161, so that the defroster control opening 151 is open. On the other hand, the vent control opening 161 and the foot control opening 171 are closed by the door peripheral portion 32 of the mode door 20 and the second seal 42 (see Figure 3). The rectifying unit 50 is positioned so that the warm air supply holes 53d, 54d, and 55d are directed toward the defroster control opening 151.

[0076] At this time, the mix door 14 is in the full hot position, as in the foot mode, so that only the hot air H2 passing through the hot air region HP flows into the mixing region MP.

[0077] 13, the first side hot air supply passage 53 is shown as a representative of the hot air supply passage 52. A portion of the hot air H2 that flows into the mixing region MP becomes hot air H5a, is collected in the hot air collecting section 51 of the rectifying section 50, passes through the first side hot air recovery hole 53h, flows through the first side hot air supply passage 53, and becomes hot air H5c that flows out from the first side hot air supply hole 53d. The same is true for the cross section of the central side hot air supply passage 54 and the cross section of the second side hot air supply passage 55. The remainder becomes hot air H4a that passes through the inside of the mix door 14 and becomes hot air H4b that flows toward the defroster control opening 151. The hot air H5c and hot air H4b pass through the defroster control opening 151 and become defroster blown air D1, and are blown out from the defroster outlet 15.

[0078] Therefore, in the defroster mode, high-temperature defroster blow-out air D1 is supplied toward the front windshield of the vehicle interior.

[0079] <Example 2> A second embodiment will be described with reference to Fig. 14. The vehicle air conditioner 110 according to the second embodiment differs from the first embodiment in the configuration of the airflow rectifying unit 150 of the mode door 120. The same reference numerals will be used for parts common to the first embodiment, and detailed descriptions will be omitted.

[0080] 14 is a view corresponding to FIG. 5, showing a cross section of the supply path in the defroster / foot mode. The rectifying section 150 in the vehicle air conditioner 110 of the second embodiment is characterized in that the first side warm air supply path 153 is curved so as to be convex toward the door interior space 23.

[0081] In the defrost foot mode, the upstream portion of the first side hot air supply passage 153 faces the hot air area HP, and the hot air collecting portion 51 and the first side hot air recovery hole 153h face the hot air area HP.

[0082] The warm air H2 that flows into the mixing region MP reaches and collects in the warm air collecting section 51 and flows directly into the first lateral warm air recovery hole 153h. The warm air H5a flowing through the first lateral warm air supply path 153 flows into the first lateral warm air supply path 153 without changing its flow direction from the warm air H2. In other words, the flow direction H2i of the warm air flowing from the warm air H2 into the mixing region MP is the same as the flow direction of the warm air H5a flowing into the first lateral warm air supply path 153.

[0083] The warm air H5a that flows into the first side hot air supply passage 153 from the warm air recovery hole flows through the internal space 153p of the first side hot air supply passage 153 along the direction of extension of the first side hot air supply passage 153 and flows out from the first side hot air supply hole 153d. At this time, the first side hot air supply passage 153 is curved so as to convexly form a curve toward the door internal space 23. Therefore, the flow direction of the warm air H5b gradually changes as it heads toward the first side hot air supply hole 153d and flows out. In the defroster-foot mode, the first side hot air supply hole 153d is located near the defroster control opening 151, so the warm air H5c that flows out from the first side hot air supply hole 153d smoothly passes through the defroster control opening 151 to become defroster blown air D1 and is blown out from the defroster outlet 15.

[0084] When the warm air H2 is collected in the first side warm air collection hole 153h and becomes warm air H5a, the change in flow direction is suppressed, and furthermore, the flow direction of the warm air H5b is gradually changed as it heads toward the first side warm air supply path 153d, so that the warm air H5c can be smoothly guided to the defroster outlet 15 without a significant increase in ventilation resistance.

[0085] 14 has been described with respect to the cross section of the first side hot air supply passage 153, but the cross sections of the central side hot air supply passage 154 and the second side hot air supply passage 155 are also similar to the first side hot air supply passage 153. In addition, the normal cross section and the cold air suppression cross section are similar to those in the first embodiment.

[0086] <Other Examples> Other embodiments will be described with reference to Fig. 15. The vehicle air conditioners according to the other embodiments differ from those of the first and second embodiments in the configuration of the airflow rectifying unit 250 of the mode door 220. The same reference numerals will be used for parts common to the first and second embodiments, and detailed descriptions thereof will be omitted.

[0087] 15 is a diagram corresponding to FIG. 5 and shows a cross section of the supply passage in the defrost-foot mode. The rectifying section 250 is based on the rectifying section 50 of the first embodiment, but differs from the first embodiment in that the first side hot air supply passage 253 and the second side hot air supply passage 255 extend in the direction along the rotation center line Ax from the first side hot air collection hole 53h and the second side hot air collection hole 55h to the first side hot air supply hole 253d and the second side hot air supply hole 255d, respectively. In other words, the first side hot air supply hole 253d is provided on one side of the first side hot air collection hole 53h in the direction along the rotation center line Ax, and the second side hot air supply hole 255d is provided on the other side of the second hot air collection hole 55h in the direction along the rotation center line Ax.

[0088] Therefore, hot air H5c can be supplied from the first hot air supply hole 253d and the second hot air supply hole 255d toward the end side in the direction along the rotation center line Ax to the defroster outlet 15 via the defroster control opening 151. Therefore, when the defroster outlet 15 is formed in a fan shape from the defroster control opening 151, hot air can be blown out along this shape, so that hot air can be smoothly supplied to the defroster outlet 15.

[0089] The components of each embodiment can be combined as appropriate. For example, the above-described rectifying unit 150 and rectifying unit 250 can be combined to apply a rectifying unit in which the hot air supply path 52 widens in the direction along the rotation center line Ax while being curved so as to be convex toward the door internal space 23. As long as the functions and effects of the present invention are thus achieved, the present invention is not limited to the embodiments. [Industrial Applicability]

[0090] The vehicle air conditioner of the present invention is suitable for use as an air conditioner mounted in a passenger car. [Explanation of symbols]

[0091] 1,110...Vehicle air conditioning units 10…Temperature conditioning device 11. Housing 12…Cooling heat exchanger 13…Heating heat exchanger 14...Mixed Door 15...Defroster outlet 151...Defroster control opening 16...Vent outlet 161...Vent control opening 17...Foot outlet 171...Foot-controlled opening 20...Mode door 21...Door inlet opening 22...Door outlet opening 23...Door interior space 30...Door body 40...Sealing member 50,150,250… Rectifier 51...Hot air collection section 52, 152, 252...Hot air supply channel 53h, 54h, 55h, 153h, 154h, 155h...Hot air collection hole 53d, 54d, 55d, 153d, 154d, 155d, 253d, 254d, 255d...Hot air supply holes IS…interior space CP…Cold air area HP: Warm air area MP…Mixed area CR…Car interior

Claims

1. A vehicle air conditioning device that adjusts the temperature of a passenger compartment (CR) of a vehicle, a housing (11) having an internal space (IS) and a plurality of outlets (15, 16, 17) for blowing out air that has passed through the internal space; a cooling heat exchanger (12) that is arranged in the internal space (IS) and that can discharge air as cold air; a heating heat exchanger (13) that can discharge the air that has flowed out of the cooling heat exchanger (12) as hot air; a mix door (14) capable of changing the ratio of air flowing into the heating heat exchanger (13) and air bypassing the heating heat exchanger (13); a rotary mode door (20) rotatably supported on the housing and capable of adjusting the opening degrees of the plurality of outlets (15, 16, 17); a straightening section (50) through which a part of the hot air flowing out of the heating heat exchanger (13) flows; Equipped with The housing (11) has a cold air region (CP) through which cold air flowing out of the cooling heat exchanger (12) flows, a hot air region (HP) through which hot air flowing out of the heating heat exchanger (13) flows, and a mixing region (MP) capable of mixing the cold air and the hot air, The mode door (20) is disposed in the mixing region (MP) and includes: a rotation axis (33) extending along a rotation center line (Ax); a pair of fan-shaped door side portions (31) extending from the rotation axis (33) in a direction intersecting the rotation center line (Ax); a door peripheral surface portion (32) formed away from the rotation center line (Ax) and connecting radial end sides of the pair of door side portions (31); a door internal space (23) surrounded by the pair of door side portions (31) and the door peripheral surface portion (32); a door inlet opening (21) that takes in air from the mixing region (MP) into the door internal space (23); and a door outlet opening (22) that discharges air from the door internal space (23) to the plurality of outlet ports (15, 16, 17). the plurality of outlets (15, 16, 17) include a defroster outlet (15) for supplying air to a front window in the vehicle interior (CR), a vent outlet (16) for supplying air to an upper space in the vehicle interior (CR), and a foot outlet (17) for supplying air to a lower space in the vehicle interior (CR); The rectifying section (50) has a hot air collecting section (51) formed along the rotation center line (Ax), hot air collection holes (53h, 54h, 55h) opening to the hot air collecting section, a hot air supply path (52) through which the hot air flowing in from the hot air collection holes flows, and hot air supply holes (53d, 54d, 55d) through which the hot air flowing in the hot air supply path (52) flows out, and is attached to the door inlet opening (21) of the mode door (20), the warm air supply passage (52) extends linearly from the warm air recovery holes (53h, 54h, 55h) to the warm air supply holes (53d, 54d, 55d), and when the mode door (20) is in a rotational position that allows air to flow out from the defroster outlet (15), the warm air supply holes (53d, 54d, 55d) face the defroster outlet (15).

2. 2. The vehicle air conditioning system according to claim 1, wherein an angle (α) formed between a flow direction (H2i) of the warm air flowing from the warm air region (HP) to the mixing region (MP) and an extension direction (Ps) of the warm air supply path (52) is an acute angle.

3. A vehicle air conditioning device that adjusts the temperature of a passenger compartment (CR) of a vehicle, a housing (11) having an internal space (IS) and a plurality of outlets (15, 16, 17) for blowing out air that has passed through the internal space; a cooling heat exchanger (12) that is arranged in the internal space (IS) and that can discharge air as cold air; a heating heat exchanger (13) that can discharge the air that has flowed out of the cooling heat exchanger (12) as hot air; a mix door (14) capable of changing the ratio of air flowing into the heating heat exchanger (13) and air bypassing the heating heat exchanger (13); a rotary mode door (20) rotatably supported on the housing and capable of adjusting the opening degrees of the plurality of outlets (15, 16, 17); a straightening section (50) through which a part of the hot air flowing out of the heating heat exchanger (13) flows; Equipped with The housing (11) has a cold air region (CP) through which cold air flowing out of the cooling heat exchanger (12) flows, a hot air region (HP) through which hot air flowing out of the heating heat exchanger (13) flows, and a mixing region (MP) capable of mixing the cold air and the hot air, The mode door (20) is disposed in the mixing region (MP) and includes: a rotation axis (33) extending along a rotation center line (Ax); a pair of fan-shaped door side portions (31) extending from the rotation axis (33) in a direction intersecting the rotation center line (Ax); a door peripheral surface portion (32) formed away from the rotation center line (Ax) and connecting radial end sides of the pair of door side portions (31); a door internal space (23) surrounded by the pair of door side portions (31) and the door peripheral surface portion (32); a door inlet opening (21) that takes in air from the mixing region (MP) into the door internal space (23); and a door outlet opening (22) that discharges air from the door internal space (23) to the plurality of outlet ports (15, 16, 17). the plurality of outlets (15, 16, 17) include a defroster outlet (15) for supplying air to a front window in the vehicle interior (CR), a vent outlet (16) for supplying air to an upper space in the vehicle interior (CR), and a foot outlet (17) for supplying air to a lower space in the vehicle interior (CR); The rectifying section (50) has a hot air collecting section (51) formed along the rotation center line (Ax), hot air collection holes (53h, 54h, 55h) opening to the hot air collecting section, a hot air supply path (52) through which the hot air flowing in from the hot air collection holes flows, and hot air supply holes (53d, 54d, 55d) through which the hot air flowing in the hot air supply path (52) flows out, and is attached to the door inlet opening (21) of the mode door (20), the warm air supply passage (52) is curved from the warm air collection holes (53h, 54h, 55h) to the warm air supply holes (53d, 54d, 55d), and when the mode door (20) is in a rotational position that allows air to flow out from the defroster outlet (15), an upstream portion of the warm air supply passage that is continuous with the warm air collection holes (53h, 54h, 55h) faces the warm air region (HP), and the warm air supply holes (53d, 54d, 55d) face the defroster outlet (15).

4. The hot air supply passage (52) has a central hot air supply passage (54), a first side hot air supply passage (53) provided on one side of the central hot air supply passage (54) in the direction along the rotation center line (Ax), and a second side hot air supply passage (55) provided on the other side of the central hot air supply passage (54) in the direction along the rotation center line (Ax), The vehicle air conditioning device according to any one of claims 1 to 3, characterized in that the central warm air supply passage (54) has a larger cross-sectional area than the first side warm air supply passage (53) and the second side warm air supply passage (55).

5. The vehicle air conditioning device according to any one of claims 1 to 3, characterized in that the hot air collection section (51) is formed concavely with respect to the flow direction (H2i) of the hot air flowing from the hot air region (HP) to the mixing region (MP).

6. The hot air supply passage (52) includes a central hot air supply passage (54), a first side hot air supply passage (253) provided on one side of the central hot air supply passage (54) in the direction along the rotation center line (Ax), and a second side hot air supply passage (255) provided on the other side of the central hot air supply passage (54) in the direction along the rotation center line (Ax), The hot air collection holes (53h, 54h, 55h) include a central hot air collection hole (54h) through which hot air flows into the central hot air supply path (54), a first side hot air collection hole (53h) through which hot air flows into the first side hot air supply path (253), and a second side hot air collection hole (55h) through which hot air flows into the second side hot air supply path (255), The hot air supply holes (253d, 54d, 255d) include a central hot air supply hole (54d) through which hot air flows out from the central hot air supply path (54), a first side hot air supply hole (253d) through which hot air flows out from the first side hot air supply path (253), and a second side hot air supply hole (255d) through which hot air flows out from the second side hot air supply path (255), The first side hot air supply hole (253d) is provided on one side of the first side hot air recovery hole (53h) in a direction along the rotation center line (Ax), The vehicle air conditioning device according to any one of claims 1 to 3, characterized in that the second side hot air supply hole (255d) is provided on the other side in the direction along the rotation center line (Ax) than the second side hot air recovery hole (55h).

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