WO2017159093A1

WO2017159093A1 - Air-conditioning device for vehicles

Info

Publication number: WO2017159093A1
Application number: PCT/JP2017/003504
Authority: WO
Inventors: 新谷　豊
Original assignee: 株式会社デンソー
Priority date: 2016-03-18
Filing date: 2017-02-01
Publication date: 2017-09-21
Also published as: CN108778794A; JP6421776B2; BR112018068878A2; JP2017170945A; CN108778794B

Abstract

An air-conditioning device for vehicles is provided with an air-conditioning case (21), a center face opening (33), side face openings (33A), and a discharge mode door (50). The discharge mode door has a rotating shaft (52), a door plate (51), and a pair of side plates (53) for connecting the door plate and the rotating shaft and sets a discharge mode in which air-conditioning air is discharged into a vehicle interior. The side plates are arranged within the range of openings of the side face openings in the rotation axis direction. The discharge mode door has suppression protrusions (57) capable of suppressing the flow of the air-conditioning air between the side plates and the air-conditioning case. When a first discharge mode in which the door plate fully opens the center face opening and the side face openings has been set, the suppression protrusions prohibit the suppression of the flow of the air-conditioning air toward the side face openings. When a second discharge mode in which the door plate sets the center face opening and the side face openings to the intermediate degree of opening has been set, the suppression protrusions suppress the flow of the air-conditioning air toward the side face openings.

Description

Air conditioner for vehicles

Cross-reference of related applications

This application is based on Japanese Patent Application No. 2016-055971 filed on Mar. 18, 2016, the disclosure of which is incorporated herein by reference.

The present disclosure relates to a vehicle air conditioner in which a blowout mode door is a rotary door.

There is a vehicle air conditioner with a blowout mode door consisting of a rotary door in the air conditioning case. In this vehicle air conditioner, the air conditioning case has a center face opening and a side face opening. The conditioned air guided to the center face opening is blown into the vehicle interior from the center face air outlet located at the center of the vehicle interior in the left-right direction of the vehicle. The conditioned air guided to the side face opening is blown into the vehicle interior from the side face air outlets located at both ends in the left-right direction in the vehicle interior. The side plate portion that connects the door plate portion of the blowout mode door and the rotating shaft is disposed within the opening range of the side face opening portion in the axial direction of the rotating shaft. For example, Patent Document 1 discloses such an automobile air conditioner.

US Patent Application Publication No. 2006/0254295

In the above vehicle air conditioner, the blowing mode door opens the center face opening and the side face opening fully, and the blowing mode door sets the center face opening and the side face opening to an intermediate opening. The second blowing mode can be set. In this air conditioner, even if the blowout air volume from the center face blowout port and the blowout air volume from the side face blowout port are balanced in the first blowout mode, they may be unbalanced in the second blowout mode.

In the second blowout mode, even if the door plate of the blowout mode door has the side face opening as an intermediate opening, a relatively large amount of conditioned air flows between the side plate and the air conditioning case where the opening is not adjusted to the side face opening. Flows in. For this reason, the amount of air blown from the side face air outlet is excessive with respect to the amount of air blown from the center face air outlet, resulting in an unbalance of the air flow rate. The imbalance between the amount of air blown from the center face air outlet and the amount of air blown from the side face air outlet may give a passenger discomfort.

This indication is made in view of the above-mentioned point, and provides an air-conditioner for vehicles which can control imbalance between the amount of blowing air from a center face blower outlet, and the amount of blowing air from a side face blower outlet. For the purpose.

The vehicle air conditioner of the present disclosure includes an air conditioning case, a center face opening, a side face opening, and a blowing mode door. Inside the air conditioning case, a passage through which conditioned air blown into the passenger compartment flows is formed. The center face opening is provided in the air conditioning case, and is connected to a center face outlet from which a conditioned air can be blown from the center in the left-right direction of the vehicle toward the occupant's head. The side face opening is provided in the air conditioning case, and is connected to a side face outlet from which air conditioning air can be blown out from both ends in the left-right direction in the passenger compartment toward the passenger head and the side window glass of the vehicle. . The blow-out mode door includes a rotary shaft portion that is pivotally supported by the air conditioning case, a door plate portion that is formed in a circular arc shape at a position away from the axis of the rotary shaft portion, and a door in the rotation axis direction in which the axis extends. A pair of side plate portions that connect both end portions of the plate portion and the rotating shaft portion are provided, and a blow-out mode that blows conditioned air into the vehicle interior is set according to the rotational position of the door plate portion. The side plate portion is disposed within the opening range of the side face opening portion in the rotation axis direction. The blow-out mode door is provided so as to protrude outward from the side plate portion in the rotation axis direction, and has a suppression protrusion that can suppress the flow of conditioned air between the side plate portion and the air conditioning case. .

When the first blowing mode in which the door plate part fully opens the center face opening part and the side face opening part is set, the restraining projection part prohibits the suppression of the flow of the conditioned air toward the side face opening part. The restraining projection part restrains the flow of conditioned air toward the side face opening when the second blowing mode is set in which the door plate part has both the center face opening and the side face opening as an intermediate opening.

According to this, in the second blowing mode, the door plate portion of the blowing mode door sets the center face opening and the side face opening to an intermediate opening. Moreover, the suppression protrusion part of the blowing mode door suppresses the flow of the conditioned air that flows between the side plate part and the air conditioning case toward the side face opening. Therefore, it is easy to balance the amount of air blown from the center face air outlet and the amount of air blown from the side face air outlet during the second air outlet mode. Moreover, at the time of 1st blowing mode, the suppression protrusion part does not suppress the flow of the air-conditioning wind which flows between a side-plate part and an air-conditioning case and goes to a side face opening part. Therefore, it is easy to balance the amount of air blown from the center face air outlet and the amount of air blown from the side face air outlet even in the first air outlet mode. In this way, it is possible to suppress an imbalance between the amount of air blown from the center face air outlet and the amount of air blown from the side face air outlet.

The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description with reference to the accompanying drawings.
It is sectional drawing of the air conditioning unit of the vehicle air conditioner in one Embodiment, and has shown the face blowing mode in the position which forms a guide plate. It is a front view of the blowing mode door which is a rotary door. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2, and shows the outermost rotation trajectory of the blowout mode door with a two-dot chain line. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 2, and shows the outermost rotation trajectory of the blowing mode door with a two-dot chain line. It is a perspective view which shows an example of a structure and combination state of an air mix door and a blowing mode door. FIG. 6 is a sectional view taken along line VI-VI in FIG. 1. However, an example in which the blowing mode door is slightly different from the door shown in FIGS. 1 to 5 is shown. It is sectional drawing of an air conditioning unit, and has shown the bilevel blowing mode in the position which forms a guide plate. It is sectional drawing of an air-conditioning unit, and has shown the foot blowing mode in the position which forms a guide plate. It is sectional drawing of an air-conditioning unit, and has shown the foot defroster blowing mode in the position which forms a guide plate. It is sectional drawing of an air conditioning unit, and has shown the defroster blowing mode in the position which forms a guide plate. It is sectional drawing of an air-conditioning unit, and has shown the face blowing mode in the position which forms a guide plate. It is sectional drawing of an air conditioning unit, and has shown the bilevel blowing mode in the position which forms a guide plate. It is sectional drawing of an air-conditioning unit, and has shown the foot blowing mode in the position which forms a guide plate. It is sectional drawing of an air-conditioning unit, and has shown the foot defroster blowing mode in the position which forms a guide plate. It is sectional drawing of an air conditioning unit, and has shown the defroster blowing mode in the position which forms a guide plate. It is a schematic diagram which shows the upper surface of an air conditioning unit, and has shown face blowing mode. It is a schematic diagram which shows the upper surface of an air conditioning unit, and has shown bilevel blowing mode. It is a schematic diagram which shows the upper surface of an air conditioning unit, and has shown the defroster blowing mode. It is sectional drawing of the site | part which forms the suppression wall part of the blowing mode door. It is a graph explaining the blowing air volume ratio from each blower outlet. It is sectional drawing of the site | part which forms the suppression wall part of the blowing mode door, and has shown the example different from FIG. It is sectional drawing explaining the air flow to the side face opening part when a center face opening part is obstruct | occluded. It is sectional drawing of the air conditioning unit in other embodiment, and has shown the cross section corresponding to FIG. It is sectional drawing of the air-conditioning unit in other embodiment, and is a figure explaining the air flow to the side face opening part when the center face opening part is obstruct | occluded.

Hereinafter, a plurality of modes for carrying out the present disclosure will be described with reference to the drawings. In each embodiment, parts corresponding to the matters described in the preceding embodiment may be denoted by the same reference numerals, and redundant description may be omitted. In the case where only a part of the configuration is described in each embodiment, the other parts of the configuration are the same as those described previously. In addition to the combination of parts specifically described in each embodiment, the embodiments may be partially combined as long as the combination is not particularly troublesome.

An embodiment of the present disclosure will be described with reference to FIGS.

The ventilation system of the vehicle air conditioner of the present embodiment is roughly divided into two parts: an air conditioning unit 20 shown in FIG. 1 and a blower unit that blows air to the air conditioning unit 20. The blower unit is disposed, for example, offset from the center to the passenger seat side in the lower part of the instrument panel in the passenger compartment. On the other hand, the air conditioning unit 20 is disposed at a substantially central portion in the left-right direction (width direction) of the vehicle in the lower part of the instrument panel in the vehicle interior. The blower unit has an inside / outside air switching box for switching between outside air, which is air outside the vehicle compartment, and inside air, which is air inside the vehicle compartment, and a blower that sucks and blows air through the inside / outside air switching box. The outlet part of the blower air of the blower unit is connected to the air inlet 24 of the air conditioning unit 20.

The air conditioning unit 20 includes an evaporator 22 that is a cooling heat exchanger and a heater core 23 that is a heating heat exchanger in a common air conditioning case 21. The air conditioning case 21 forms a passage (air passage) through which the conditioned air blown into the passenger compartment flows.

The air-conditioning case 21 is made of a resin molded product that has elasticity to some extent, such as polypropylene resin, and is excellent in strength. The air conditioning case 21 is formed by combining a plurality of individually molded cases, for example. The air conditioning case 21 can be configured by combining, for example, an upper case, a middle case, and a lower case. The plurality of individually molded cases house devices such as an evaporator 22, a heater core 23, and a door, which will be described later, and then are integrally coupled by a fastening portion such as a metal spring clip or a screw to form an air conditioning case 21.

An air inflow port 24 is provided in a portion of the air conditioning case 21 on the front side (left side in FIG. 1) in the longitudinal direction of the vehicle. Air blown from the blower unit flows into the air inlet 24.

In the air conditioning case 21, the evaporator 22 is disposed at a portion located immediately after the air inlet 24 so as to cross the entire area of the air passage. The evaporator 22 absorbs the latent heat of evaporation of the refrigerant in the refrigeration cycle from the air and cools the air. The evaporator 22 is installed in the air conditioning case 21 with a slight inclination in the front-rear direction and a slight inclination in the longitudinal direction of the vehicle. The evaporator 22 is of a laminated type, and has a core portion in which a large number of flat tubes made of a thin metal plate such as aluminum are laminated with corrugated fins and brazed together.

The heater core 23 is disposed adjacent to the downstream side of the evaporator 22 at a predetermined interval. The heater core 23 heats the cold air that has passed through the evaporator 22. For example, high-temperature engine coolant flows through the heater core 23, and the heater core 23 heats the air using the coolant as a heat source. Similarly to the evaporator 22, the heater core 23 is also installed in the air conditioning case 21 with a slight inclination in the front-rear direction and a longitudinal direction in the up-down direction. The heater core 23 has a core portion in which a large number of flat tubes made of a thin metal plate such as aluminum are laminated with corrugated fins and integrally brazed.

In the air conditioning case 21, a cold air passage 25, which is a bypass passage through which the cold air flowing out from the evaporator 22 bypasses the heater core 23, is formed at a portion above the heater core 23. On the other hand, in the air conditioning case 21, a warm air passage 28 is formed on the downstream side of the air flow of the heater core 23 from the immediately after the heater core 23 toward the upper side. In the downstream side of the cool air passage 25, a mixing space 30 is formed in which the cool air from the cold air passage 25 and the warm air from the hot air passage 28 are merged in a crossing direction to mix the cool air and the hot air. ing.

An air mix door 40 that adjusts the air volume ratio between the warm air passing through the heater core 23 and the cool air passing through the cool air passage 25 is disposed downstream and above the air flow of the heater core 23.

The air conditioning case 21 has a defroster opening 31 that opens at a front portion in the front-rear direction of the upper surface of the air conditioning case 21. Air whose temperature is controlled flows from the mixing space 30 into the defroster opening 31. The defroster opening 31 is connected to the defroster outlet through the defroster duct, and blows out air from the defroster outlet toward the inner surface of the front window glass of the vehicle.

The air conditioning case 21 has a center face opening 33 that is connected to a center face outlet that can blow air conditioned air from the center in the left-right direction in the passenger compartment toward the head of the passenger. The center face opening 33 is opened in a portion on the rear side of the defroster opening 31 in the upper surface of the air conditioning case 21. The temperature-controlled air also flows from the mixing space 30 into the center face opening 33. The center face outlet is provided, for example, at the center in the left-right direction of the instrument panel. The center face opening 33 is connected to the center face outlet through a center face duct, and blows air from the center face outlet toward the passenger's head.

Further, a foot opening 35 is opened in the rear surface portion of the air conditioning case 21. The temperature-controlled air also flows from the mixing space 30 into the foot opening 35. The downstream side of the foot opening 35 is connected to a foot outlet through a foot duct, and air is blown out from the foot outlet toward the occupant's feet.

The plurality of openings described above, that is, the defroster opening 31, the center face opening 33, and the foot opening 35 are opened and closed by the blowing mode door 50. The blowing mode door 50 forms a blowing mode in which one or more of the defroster opening 31, the center face opening 33, and the foot opening 35 are opened according to the rotation stop position.

As shown in FIG. 6, the air conditioning case 21 is connected to a side face outlet from which air conditioned air can be blown out from both ends in the left-right direction of the passenger compartment toward the passenger's head and the side window glass of the vehicle. A side face opening 33A is provided. In the present embodiment, the two side face opening portions 33 A are opened at both end portions in the left-right direction in the upper surface portion of the air conditioning case 21. The temperature-controlled air also flows from the mixing space 30 into the side face opening 33A. In the present embodiment, two side face outlets are provided at both ends in the left-right direction of the instrument panel, for example. The side face opening 33A is connected to the side face outlet through the side face duct, and blows wind from the side face outlet toward the occupant head side in the vehicle compartment or the side window glass of the vehicle. The blowing direction of the conditioned air from the side face outlet can be changed by an outlet louver which is an outlet direction changing unit provided at the side face outlet.

The aforementioned defroster opening 31, center face opening 33, and foot opening 35 correspond to openings other than the side face opening 33A.

The vehicle air conditioner having the above-described configuration includes, for example, an electronic control device to which operation signals from various operation members provided on an air conditioning operation panel and sensor signals from various sensors for air conditioning control are input. And the position of the air mix door 40 and the position of the blowing mode door 50 are controlled by the output signal of this control apparatus.

The air mix door 40 is made of, for example, a resin material. As shown in FIG. 5, the air mix door 40 includes an integrally formed door plate portion 41, a rotating shaft portion 42, and a side plate portion 43. The door plate portion 41 is formed in a circular arc shape separated by a predetermined amount from the rotation axis. The rotating shaft portion 42 has a substantially cylindrical shape. In this embodiment, a pair of rotating shaft part 42 is arrange | positioned on the rotating shaft line. The side plate portion 43 has a substantially fan shape and connects the door plate portion 41 and the rotating shaft portion 42. The air mix door 40 is a rotary door in which the door plate portion 41 rotates around the rotation shaft portion 42. The door plate portion 41 is an air mix door plate portion.

As shown in FIG. 6, the air mix door 40 has a pair of rotary shaft portions 42 at both ends of the door plate portion 41 in the direction in which the rotation axis of the air mix door 40 extends (rotation axis direction). A pair of side plate portions 43 connects both end portions 411 of the door plate portion 41 in the rotation axis direction and the pair of rotation shaft portions 42. Each of the pair of rotating shaft portions 42 is extended so that the distal end portion protrudes outward in the axial direction with the substantially same position as both end portions 411 of the door plate portion 41 as base end portions. A base end portion of the rotation shaft portion 42 is connected to the side plate portion 43.

The blowout mode door 50 is also made of, for example, a resin material, like the air mix door 40. As shown in FIGS. 2 to 5, the blowing mode door 50 includes a door plate portion 51, a door base portion 58, and a seal member 59. The door base portion 58 includes a rotation shaft portion 52, a side plate portion 53, a partition plate 54, a guide plate 55, a guide plate 56, and a suppression wall portion 57. The door base portion 58 is configured by integrally forming a rotary shaft portion 52, a side plate portion 53, a partition plate 54, a guide plate 55, a guide plate 56, and a suppression wall portion 57.

The door plate portion 51 and the door base portion 58 can be formed of a hard member such as polypropylene resin, for example. The seal member 59 can be formed of a soft member such as a urethane foam resin.

The door plate portion 51 is formed in a circular arc shape that is separated from the rotation axis AA by a predetermined amount. The door plate portion 51 is a door plate portion of the blowout mode door, and corresponds to the mode door plate portion. The rotating shaft portion 52 has a substantially cylindrical shape. In the present embodiment, the pair of rotation shaft portions 52 are disposed on the rotation axis AA. The side plate portion 53 has a substantially disk shape that connects the door plate portion 51 and the rotating shaft portion 52. The side plate portion 53 extends in a direction orthogonal to the rotation axis AA. In the present embodiment, a pair of side plate portions 53 are provided at both ends of the door plate portion 51 in the direction in which the rotation axis AA extends. The pair of side plate portions 53 couples both end portions of the door plate portion 51 and the rotation shaft portion 52 in the direction in which the axis of the rotation shaft portion 52 extends. Hereinafter, the direction in which the axis of the rotation shaft portion 52 extends may be simply referred to as the rotation axis direction. That is, the direction in which the rotation axis AA extends may be referred to as the rotation axis direction.

The blowout mode door 50 is a rotary door in which the door plate portion 51 rotates around the rotation shaft portion 52. The blowout mode door 50 is a rotary door that rotates around the rotation axis AA.

In the example shown in FIGS. 2 to 5, the door plate portion 51 is formed as a separate body from the door base portion 58. That is, the door plate portion 51 is formed separately from the side plate portion 53. In the present embodiment, the door plate portion 51 includes a first door plate portion 51a and a second door plate portion 51b. Each of the first door plate portion 51a and the second door plate portion 51b is formed in an arcuate shape. The 1st door board part 51a and the 2nd door board part 51b are arrange | positioned in the position away only the same distance from rotation axis AA. The 1st door board part 51a and the 2nd door board part 51b are arrange | positioned in the position which is different in the rotation direction of the blowing mode door 50. As shown in FIG.

As shown in FIG. 5, claw-like locking portions 513 are provided at both ends in the rotation axis direction of the first door plate portion 51a and the second door plate portion 51b. Further, a claw-like locking portion 533 is provided on the outer peripheral edge of the side plate portion 53 in correspondence with the locking portion 513. The door plate portion 51 is connected to the pair of side plate portions 53 when the locking portion 513 and the locking portion 533 are locked to each other. The connection structure between the door plate portion 51 and the side plate portion 53 is not limited to the above-described locking structure. The door plate portion 51 and the side plate portion 53 may be connected to each other by, for example, a method such as adhesion, welding, or screwing after being formed separately.

A seal member 59 is provided on the outer peripheral surface of the door plate portion 51. The seal member 59 seals between the door plate portion 51 and the air conditioning case 21. The seal member 59 has a seal member 59a and a seal member 59b. A seal member 59a is provided on the outer peripheral surface of the first door plate portion 51a. A seal member 59b is provided on the outer peripheral surface of the second door plate portion 51b.

In this example, the seal member 59a is provided so as to cover the entire outer surface of the first door plate portion 51a. The seal member 59b is provided so as to cover the entire outer surface of the second door plate portion 51b.

The seal member 59 is disposed on the outer peripheral surface of the door plate portion 51 by sticking, for example. In this example, a part of the outer peripheral edge portion of the seal member 59 is attached to the inner peripheral surface of the door plate portion 51. Each of the first door plate portion 51 a and the second door plate portion 51 b is covered with a sealing member 59 at both sides in the rotational direction. The connection between the door plate portion 51 and the seal member 59 is not limited to adhesion or adhesion. For example, when molding one member of the door plate portion 51 and the seal member 59, the other member may be insert-molded.

The blowout mode door 50 has a pair of restraining wall portions 57 that are located outward from the side plate portion 53 in the rotation axis direction and project from the side plate portion 53 in the rotation axis direction. The pair of suppression wall portions 57 protrude outwardly on both sides of the pair of side plate portions 53 in the rotation axis direction. The one restraint wall portion 57 is not located between the pair of side plate portions 53 in the rotation axis direction but outside the one side plate portion 53, and a portion where the one side plate portion 53 is disposed is a base end. The pair of side plate portions 53 protrude in a direction opposite to the facing direction. The other suppression wall portion 57 is located outside the other side plate portion 53 rather than between the pair of side plate portions 53 in the rotation axis direction, with the portion where the other side plate portion 53 is disposed as a base end. With the other side plate portion 53 being disposed at the base end, the pair of side plate portions 53 protrudes in a direction opposite to the facing direction.

As shown in FIG. 5, the suppression wall portion 57 is formed in a circular arc shape that is separated from the rotation axis AA by a predetermined amount. The suppression wall portion 57 is disposed at a position away from the rotation axis AA by substantially the same distance as the door plate portion 51. The suppression wall portion 57 is provided in a part of the first door plate portion 51 a disposition region in the rotation direction of the blowout mode door 50. The restraint wall portion 57 is provided corresponding to a region on the second door plate portion 51b side in the first door plate portion 51a arrangement region in the rotation direction of the blowout mode door 50. The length of the suppression wall portion 57 in the rotational direction is, for example, about ¼ to ５ of the length of the first door plate portion 51a in the rotational direction.

The restraint wall part 57 restrains the flow of the conditioned air flowing between the side plate part 53 and the air conditioning case 21. The restraint wall portion 57 can restrain the flow of conditioned air between each of the pair of side plate portions 53 and the air conditioning case 21. The suppression wall portion 57 corresponds to a suppression protrusion. The suppression wall portion 57 is a wall portion formed in a circular arc shape at a position away from the rotation axis AA. Note that a sealing member is not provided on the surface of the suppression wall portion 57. The surface of the suppression wall portion 57 is not covered with the seal member, and the surface is exposed.

The partition plate 54 has a plate shape that extends in a direction orthogonal to the rotation axis. The partition plate 54 is disposed between the pair of side plate portions 53. In the present embodiment, four partition plates 54 are provided in parallel with the side plate portions 53, and a space serving as an air passage formed between the pair of side plate portions 53 is partitioned into five in the rotation axis direction. Yes.

As shown in FIGS. 2 and 3, the two partition plates 54 located at the center in the rotational axis direction among the four partition plates 54 are connected to each other by two guide plates 55. In addition, the side plate portion 53 and the partition plate 54 located on the outermost side in the rotation axis direction among the four partition plates 54 are connected by two guide plates 55.

The guide plate 55 is extended in the rotation axis direction. As shown in FIG. 3, one guide plate 55 of the two guide plates 55 has a flat plate shape. The other guide plate 55 has a cup shape with a cross-sectional shape having a protrusion at the bottom. The guide plate 55 promotes mixing of cold air and hot air in the air passage provided with the guide plate 55 among the air passages partitioned by the partition plate 54. The guide plate 55 guides the cold air and the hot air so as to gather at the center of the mixing space 30, and promotes the mixing of the cold air and the hot air in the mixing space 30. The guide plate 55 may be simply called a guide.

As shown in FIG. 3, the first door plate portion 51a is integrally provided with a guide plate 511 protruding inward at a position corresponding to the air passage in which the guide plate 55 is disposed. . The guide plate 511, together with the guide plate 55, promotes mixing of cold air and hot air in the mixing space 30.

As shown in FIGS. 2 and 3, among the four partition plates 54, the partition plate 54 located on the outermost side in the rotation axis direction and the partition plate 54 adjacent thereto are two guide plates 56. Are connected to each other.

The guide plate 56 extends in the rotation axis direction. As shown in FIG. 4, each of the two guide plates 56 has a slightly curved plate shape. Of the air passages partitioned by the partition plate 54, the guide plate 56 prevents the cold air from being mixed with the hot air in the air passage provided with the guide plate 56, and the hot air reaches a predetermined region of the mixing space 30. To help. The guide plate 56 guides the cool air so as to prevent entry into the air passage, and guides the warm air so as to prompt entry into the air passage. The guide plate 56 blows the hot air so that the hot air blown from the hot air outlet of the hot air passage 28 reaches a region of the mixed space 30 opposite to the hot air outlet side of the hot air passage 28. invite. The guide plate 56 may be called a baffle.

The partition plate 54, the guide plate 55, and the guide plate 56 are integrally formed with the pair of side plate portions 53 so as to connect the pair of side plate portions 53. The pair of side plate portions 53 are firmly connected to each other by a lattice-like body including a plurality of partition plates 54 and a plurality of guide plates 55 and guide plates 56 provided in each air passage.

The partition plate 54, the guide plate 55, and the guide plate 56 are connecting portions that connect the pair of side plate portions 53 to each other. Further, the partition plate 54, the guide plate 55, and the guide plate 56 are guide members that guide the air flowing between the pair of side plate portions 53.

Although the door base 58 includes the guide plate 55 and the guide plate 56 between the pair of side plate portions 53, the door base 58 can be formed by a mold that opens in a direction orthogonal to the rotation axis AA. A configuration including the partition plate 54, the guide plate 55, and the guide plate 56 can be easily molded by a molding die that molds the opposing surfaces of the pair of side plate portions 53.

Thus, the door base 58 does not have an undercut portion between the pair of side plate portions 53 with respect to the mold opening direction of the mold. Therefore, the connecting portion of the lattice-like body that connects the pair of side plate portions 53 to each other can be easily formed by a forming die having a simple structure that does not have a slide mechanism. The grid-shaped guide member composed of the partition plate 54, the guide plate 55, and the guide plate 56 can be easily formed by a forming die having a simple structure.

The door base portion 58 has a pair of side plate portions 53 connected by a connecting portion of a lattice-like body, and can be a strong structure having relatively high rigidity. Therefore, the door plate portion 51, which is separate from the door base portion 58, can support the door plate portion 51 by the door base portion 58 even if the structural strength is relatively small. Therefore, in the present embodiment, the thickness of the door plate portion 51 is made smaller than the thickness of each portion of the door base portion 58. For example, the thickness of the side plate portion 53 can be 1.2 mm, and the thickness of the door plate portion 51 can be 0.9 mm. Thus, even if the thickness of the door plate portion 51 is made thinner than the thickness of the side plate portion 53, the door plate portion 51 can be stably supported.

In this example, the suppression wall portion 57 is formed integrally with the side plate portion 53. The thickness of the suppression wall portion 57 can be set to 1.2 mm, for example, similarly to the side plate portion 53. Further, the suppression wall portion 57 is not required to have a great structural strength. Therefore, the thickness of the suppression wall portion 57 can be set to 0.9 mm, for example, similarly to the door plate portion 51. The thickness of the suppression wall portion 57 can be set to about 0.9 to 1.2 mm. The thickness of the suppression wall portion 57 has a rigidity necessary for suppressing the flow of air-conditioning air, and can be set to be thinner as long as characteristics such as vibration are satisfied.

As described above, the blowout mode door 50 is a rotary door in which the door plate portion 51 rotates around the rotation shaft portion 52. The blow-out mode door 50 has a pair of rotation shaft portions 52 at both ends of the door plate portion 51 in the rotation axis direction. The side plate portion 53 connects both ends of the door plate portion 51 in the rotation axis direction and the pair of rotation shaft portions 52. Each of the rotation shaft portions 52 is extended so that the distal end portion protrudes outward with the base portion being substantially the same position as the end portion of the door plate portion 51 in the rotation axis direction. The part is connected to the side plate part 53.

The rotation shaft portion 52 of the blow-out mode door 50 is disposed inside the rotation shaft portion 42 of the air mix door 40, and the axis line of the rotation shaft portion 42 and the axis line of the rotation shaft portion 52 are located on the same axis. ing. Further, the separation distance from the rotation axis of the door plate portion 41 of the air mix door 40 is set slightly larger than the separation distance from the rotation axis of the door plate portion 51 of the blowing mode door 50. The separation distance from the axis of the rotation shaft portion 42 of the door plate portion 41 of the air mix door 40 is set slightly larger than the separation distance from the axis of the rotation shaft portion 52 of the door plate portion 51 of the blowing mode door 50. It can also be said.

The dimension in the rotation axis direction of the door plate portion 41 of the air mix door 40 is set to be larger than the dimension in the rotation axis direction of the door plate portion 51 of the blowing mode door 50. Therefore, the interval between the side plate portions 43 of the air mix door 40 is wider than the interval between the side plate portions 53 of the blowing mode door 50. In other words, the pair of side plate portions 43 of the air mix door 40 are located outward in the rotational axis direction than the pair of side plate portions 53 of the blowout mode door 50.

The rotating shaft portion 42 and the rotating shaft portion 52 are directly or indirectly supported by the air conditioning case 21. With the above-described configuration, the air mix door 40 and the blow-out mode door 50 assembled to the air conditioning case 21 with the same rotation axis can be rotated without interfering with each other. The rotation trajectory of the door plate portion 41 of the air mix door 40 is located outside the rotation trajectory of the door plate portion 51 of the blowout mode door 50 and is along the rotation trajectory of the door plate portion 51. The suppression wall portion 57 is located outside the side plate portion 43 of the air mix door 40, but in the use rotation range of the air mix door 40 and the blowing mode door 50, the suppression wall portion 57 is the air mix door 40. There will be no interference.

In this embodiment, as shown in FIGS. 2 to 5, the blowout mode door 50 is formed by combining a door plate portion 51 and a door base portion 58 including a pair of side plate portions 53 as separate bodies. ing. However, for example, the blowing mode door 50 may be integrally formed. Further, for example, the blow-out mode door 50 may be separately formed into a plurality of parts such that different positions from the present embodiment are combined positions, and may be combined with each other.

For example, as shown in FIG. 6, the door plate portion 51, the rotary shaft portion 52, and the side plate portion 53 may be integrally formed. The blowout mode door 50 may be configured by combining a molded body including the door plate portion 51, the rotating shaft portion 52, and the side plate portion 53 with a molded body including the partition plate 54, the guide plate 55, and the guide plate 56. The shapes of the

guide plates

55 and 56 shown in FIG. 6 are slightly different from the shapes of the

guide plates

55 and 56 shown in FIGS.

The blow-out mode door 50 can be provided by combining a plurality of components formed as separate bodies. The position where a plurality of constituent members are connected in combination may be any. For example, there may be a connection position in the side plate portion 53. That is, one side plate portion 53 may be separately molded as a plurality of constituent members, and the side plate portion 53 may be formed by combining these plurality of constituent members.

Further, the pair of suppression wall portions 57 may not be formed integrally with the side plate portion 53. For example, the suppression wall portion 57 may be formed integrally with the door plate portion 51. Further, the suppression wall portion 57 may be formed as a separate body from the door plate portion 51 and the side plate portion 53 and attached to the door plate portion 51 and the side plate portion 53, for example.

As shown in FIG. 6, the rotary shaft portion 42 of the air mix door 40 and the rotary shaft portion 52 of the blow-out mode door 50 are positioned on both sides in the left-right direction of the air conditioning case 21 and extend to the side wall portion 211 extending in the vertical direction. Supported directly or indirectly. A first air guide passage 301 is formed between the pair of side plate portions 53 of the blowing mode door 50. The first air guide passage 301 is located between the pair of side plate portions 53. The first air guide passage 301 also functions as the mixing space 30.

The conditioned air flowing through the first air guide passage 301 flows into an opening of the defroster opening 31, the center face opening 33, and the foot opening 35 that is opened according to the rotation stop position of the door plate 51. To do. The conditioned air flowing through the first air guide passage 301 flows into at least one of the defroster opening 31, the center face opening 33, and the foot opening 35. The first air guide passage 301 is an air guide passage that guides conditioned air to another opening in the present embodiment. In addition, when the blowing mode in which the center face opening 33 is opened is set, a part of the conditioned air flowing through the first air guide passage 301 flows into the side face opening 33A.

A second air guide passage 302 is formed between each of the pair of side plate portions 53 of the blowing mode door 50 and the side wall portion 211 of the air conditioning case 21 facing each side plate portion 53. The second air guide passages 302 are located between the respective side plate portions 53 and the side wall portions 211 facing the side plate portions 53.

As is clear from FIG. 6, the side plate portion 53 is disposed within the opening range of the side face opening portion 33 A in the rotation axis direction. The side face opening 33A opens across the side plate portion 53 in the rotation axis direction. The side face opening 33A opens so as to straddle both sides of the side plate portion 53 in the rotation axis direction. The side face opening 33 A opens so as to straddle the downstream end of the first air guide passage 301 and the downstream end of the second air guide passage 302 in the rotation axis direction.

As described above, the dimension in the rotation axis direction of the door plate portion 41 of the air mix door 40 is larger than the dimension in the rotation axis direction of the door plate portion 51 of the blowing mode door 50. As is clear from FIG. 6, both end portions 411 of the door plate portion 41 are located outward from the side plate portion 53. Both end portions 411 of the door plate portion 41 in the rotation axis direction are positioned outward from both end portions 5111 of the door plate portion 51 in the rotation axis direction. The door plate portion 41 extends to the lower side of the second air guide passage 302. Thereby, the second air guide passage 302 also functions as the mixing space 30.

The conditioned air flowing through the second air guide passage 302 flows along the side plate portion 53 and then flows into the side face opening 33A regardless of the rotational position of the door plate portion 51. The conditioned air flowing through the second air guide passage 302 flows along the side plate portion 53 over the entire area of the side plate portion 53 in the ventilation direction. In the present embodiment, the conditioned air flowing through the second air guide passage 302 flows along the side plate portion 53 over substantially the entire area of the side plate portion 53 in the vertical direction. The conditioned air flowing through the second air guide passage 302 also flows through the second air guide passage 302 along the side wall portion 211. The second air guide passage 302 is an air guide passage for guiding the conditioned air to the side face opening 33A in the present embodiment. The side face opening 33A is a normally open opening that opens in any blowing mode.

The conditioned air flowing through the second air guide passage 302 is guided to the side face opening 33A along the side plate portion 53 without passing through the first air guide passage 301. The second air guide passage 302 is formed between each of the pair of side plate portions 53 and the side wall portion 211 of the air conditioning case 21 facing each side plate portion 53. The second air guide passage 302 guides the conditioned air to the side face opening 33 A along the side plate portion 53 without passing through the first air guide passage 301.

The opening is not provided in the side plate part 53 of the blowing mode door 50 of this embodiment. The side plate portion 53 partitions the first air guide passage 301 and the second air guide passage 302 so as to isolate them. The side plate portion 53 defines a first air guide passage 301 and a second air guide passage 302 that are formed on the sides of the side plate portion 53 with the side plate portion 53 interposed therebetween. The side plate portion 53 blocks the flow of conditioned air from the first air guide passage 301 to the second air guide passage 302. Further, the side plate portion 53 blocks the inflow of conditioned air from the second air guide passage 302 to the first air guide passage 301.

As described above, the pair of side plate portions 53 are disposed between the first air guide passage 301 and the second air guide passage 302, respectively, and the second air guide passage from the first air guide passage 301 via each side plate portion 53. The flow of conditioned air into the passage 302 is blocked. The side plate portion 53 has no opening or notch. Thereby, the side plate part 53 suppresses the inflow of the conditioned air from the first air guide passage 301 to the second air guide passage 302 through the opening or the notch.

Further, each of the pair of side plate portions 53 is disposed between the first air guide passage 301 and the second air guide passage 302, and from the second air guide passage 302 via the side plate portion 53 to the first air guide passage 301. Prevents inflow of conditioned air. The side plate portion 53 has no opening or notch. Thereby, the side plate part 53 suppresses the inflow of the conditioned air from the second air guide passage 302 to the first air guide passage 301 via the opening or the notch.

Therefore, when the blowing mode in which the center face opening 33 is closed is set, only the conditioned air flowing through the second air guide passage 302 flows into the side face opening 33A. Further, when the blowing mode in which the center face opening 33 is opened is set, a part of the conditioned air flowing through the first air guide passage 301 and the conditioned air flowing through the second air guide passage 302 are the side face openings. It flows into the part 33A.

The side plate portion 53 and the side wall portion 211 facing each other with the second air guide passage 302 therebetween are disposed substantially in parallel with each other. Therefore, the width of the second air guide passage 302 is substantially uniform from the lower side which is the upstream side to the upper side which is the downstream side. Therefore, the ventilation resistance of the second air guide passage 302 is relatively small. Thereby, the pressure loss of the conditioned air that flows linearly from the bottom to the top in the second air guide passage 302 is also relatively small.

The width of the second air guide passage 302 in the rotation axis direction is preferably set to 10 to 25 mm, for example. That is, the distance between the side plate portion 53 and the side wall portion 211 is preferably 10 to 25 mm, for example. If the distance between the side plate portion 53 and the side wall portion 211 is less than 10 mm, the amount of air-conditioning air flowing into the side face opening portion 33A is likely to decrease when the blowing mode in which the center face opening portion 33 is closed is set. It is not preferable. Moreover, since the physique of the air-conditioning case 21 will become large when the space | interval of the side-plate part 53 and the side wall part 211 exceeds 25 mm, it is unpreferable.

On the other hand, the distance between the side plate portion 43 and the side wall portion 211 is preferably set to 5 mm or less, for example, in order to mix cold air and hot air while preventing mutual interference. The space | interval of the side-plate part 53 and the side wall part 211 can be set according to the desired amount of blowing air from a side face blower outlet. The amount of air blown from the side face air outlet can be easily changed by changing the setting of the separation distance between the side plate portion 53 and the side wall portion 211. Moreover, the space | interval of the side-plate part 43 and the side wall part 211 can be set according to a desired temperature control characteristic. The temperature adjustment characteristic from the side face outlet can be easily changed by changing the setting of the separation distance between the side plate portion 43 and the side wall portion 211.

Next, the operation of the air conditioning unit 20 of the vehicle air conditioner will be briefly described based on the above configuration.

When the blower unit is activated and air is blown to the air conditioning unit 20, the blown air from the blower unit flows into the air conditioning unit 20 through the air inlet 24. Then, the inflow air is distributed by the air mix door 40 into a portion flowing through the cold air passage 25 and a portion heated by the heater core 23. Thereafter, the warm air heated by the heater core 23 and flowing through the warm air passage 28 and the cold air from the cold air passage 25 are mixed in the mixing space 30.

The conditioned air in which the cool air and the warm air are mixed in the mixing space 30 flows in the direction of the respective outlets on the downstream side, and flows into the opening portion that opens according to the blowing mode formed by the blowing mode door 50. Is blown out.

In FIG. 1, the air mix door 40 is in a position for setting the maximum cooling state in which the cold air passage 25 is fully opened and the hot air passage 28 is fully closed, and the blowout mode door 50 opens the center face opening 33. The state which exists in the position which sets the face blowing mode which closes an opening part is shown. The openings that are closed when the face blowing mode is set are the defroster opening 31 and the foot opening 35.

When the air mix door 40 rotates in the clockwise direction shown in FIG. 1 from the state shown in FIG. 1, the ratio of the cool air flowing into the mixing space 30 decreases and the ratio of the hot air increases. The air mix door 40 can be rotated to the position shown in FIG.

On the other hand, when the blowing mode door 50 rotates in the clockwise direction shown in FIG. 1 from the state shown in FIG. 1, the blowing mode of the conditioned air blown from the mixed space 30 into the vehicle interior is the bi-level mode, the foot mode, the foot mode. It is changed in the order of defroster mode and defroster mode.

The bi-level mode shown in FIG. 7 is a mode in which conditioned air with a substantially uniform airflow flows through the center opening 33, the side face opening 33A, and the foot opening 35. The foot mode shown in FIG. 8 is a mode in which most of the conditioned air flows through the foot opening 35 and a small portion of the conditioned air flows through the defroster opening 31. In the foot mode shown in FIG. 8, for example, conditioned air flows to the defroster opening 31 through a groove-shaped passage 311 provided in the air-conditioning case 21.

The foot defroster mode shown in FIG. 9 is a mode in which conditioned air with a substantially uniform airflow is passed through the defroster opening 31 and the foot opening 35. The defroster mode shown in FIG. 10 is a mode in which substantially the entire air volume of the conditioned air is sent to the defroster opening 31. The blowing mode door 50 can be rotated to the position shown in FIG.

8, 9, and 10 show a state in which the air mix door 40 is in a position for setting a maximum heating state in which the cold air passage 25 is fully closed and the hot air passage 28 is fully open.

As shown in FIG. 7, in a state where the air mix door 40 can introduce the cold air and the hot air into the mixing space 30, the mixing of the hot air and the cold air in the mixing space 30 is promoted by the guide plate 55 and the guide plate 511. Is done. The guide plate 55 and the guide plate are also provided when the air mix door 40 rotates from the state shown in FIGS. 1 and 8 to 10 to introduce the cold air and the hot air into the mixing space 30. By 511, mixing of the cold air and the warm air in the mixing space 30 is promoted.

When each blowing mode is set in the air conditioning unit 20, the portion of the blowing mode door 50 where the guide plate 56 is formed is in the state shown in FIGS. FIG. 11 shows the state of the face mode. FIG. 12 shows a state of the bilevel mode. FIG. 13 shows the state of the foot mode. FIG. 14 shows the state of the foot defroster mode. FIG. 15 shows the state of the defroster mode.

In a state where the air mix door 40 can introduce the cold air and the hot air into the mixing space 30, the guide plate 56 easily inhibits the cold air from the cold air passage 25 from flowing into the mixing space 30. Further, the guide plate 56 makes it easy for the warm air flowing from the warm air passage 28 to reach the region near the defroster opening 31 in the mixing space 30.

In particular, in the blowout mode in which the conditioned air flows into the defroster opening 31, the guide plate 56 prevents the flow of cold air into the mixing space 30 and reaches the hot air to the area near the defroster opening 31 in the mixing space 30. Let The blowing modes in which air is blown to the defroster opening 31 are the foot mode shown in FIG. 13, the foot defroster mode shown in FIG. 14, and the defroster mode shown in FIG.

In the foot mode, the foot defroster mode, and the defroster mode, the guide plate 56 prevents the cool air from flowing into the mixing space 30. At the same time, the guide plate 56 causes the warm air to reach the area near the defroster opening 31 in the mixing space 30. Therefore, in the foot mode, the foot defroster mode, and the defroster mode, conditioned air having a relatively high temperature is supplied to the defroster opening 31.

In the above description of the operation, the opening / closing states of the defroster opening 31, the center face opening 33, and the foot opening 35 in each blowing mode have been described. As described above, the side face opening 33A is a normally open opening. In the face blowing mode in which the blowing mode door 50 opens the center face opening 33, the side face opening 33A is also fully opened. For example, as shown in FIG. 16, the side face opening 33 A communicates not only with the second air guide passage 302 but also with the first air guide passage 301.

As shown in FIG. 16, when the face blowing mode is set, both the center face opening 33 and the side face opening 33A are fully opened. The suppression wall 57 is positioned on the side of the defroster opening 31 in the rotation axis direction, and does not overlap any opening. Thereby, in the face blowing mode, the balance between the amount of air blown from the center face air outlet and the amount of air blown from the side face air outlet becomes good. The face blowing mode corresponds to the first blowing mode in the present embodiment.

When the blowing mode door 50 is in the bi-level blowing mode in which the center face opening 33 is opened at an intermediate opening, the side face opening 33A is also in an intermediate opening state. In the bi-level blowing mode, the blowing mode door 50 sets the opening of the center opening 33 and the side face opening 33A to about half that in the face blowing mode. Also in the bi-level blowing mode, as illustrated in FIG. 17, the side face opening 33 A communicates not only with the second air guide passage 302 but also with the first air guide passage 301.

As shown in FIG. 17, when the bi-level blowing mode is set, both the center face opening 33 and the side face opening 33A are in the intermediate opening state. The suppression wall portion 57 protruding outward from the side plate portion 53 in the rotation axis direction is positioned so as to cover a part of the side face opening portion 33A. The center face opening 33 is set to a predetermined intermediate opening by the door plate portion 51. The side face opening 33 A is set to a predetermined intermediate opening degree substantially the same as the center face opening 33 by the door plate portion 51 and the suppression wall portion 57. Thereby, in bilevel blowing mode, the balance between the amount of air blown from the center face outlet and the amount of air blown from the side face outlet becomes good. The bi-level blowing mode corresponds to the second blowing mode in the present embodiment.

In the blowing mode in which the blowing mode door 50 closes the center face opening 33, the opening degree of the side face opening 33A is reduced. For example, as shown in FIG. 18, when the defroster blowing mode is set, a part of the side face opening 33A is closed by the door plate portion 51 to reduce the opening, and the side face opening 33A Only the two air guide passages 302 communicate with each other. The suppression wall 57 is positioned on the side of the foot opening in the rotation axis direction and does not overlap any opening.

FIG. 18 illustrates the defroster blowing mode, and when the blowing mode in which the center face opening 33 is closed is set, the side face opening 33A is in a half-open state in which the opening degree is reduced. Thereby, in the blowing mode in which the center face opening 33 is closed, the amount of blowing air from the side face outlet is suppressed, and the amount of conditioned air flowing into the other opening is secured. As is apparent from FIGS. 16 to 18, for example, the defroster opening 31 and the foot opening are expanded in the left-right direction to the width of the door plate 51, that is, the length of the door plate 51 in the rotational axis direction. Is possible.

Regardless of which blowing mode is set, the conditioned air that flows through the second air guide passage 302 and is guided to the side face opening 33A is unlikely to cause a large pressure loss.

For example, in the example shown in FIG. 16 and FIG. 18, the conditioned air that has flowed upward (from the back side of the drawing to the front side) through the second air guide passage 302 having a relatively low airflow resistance enters the side face opening 33A. Inflow. Therefore, as shown in FIG. 18, even if the opening degree of the side face opening 33A is reduced, it is easy to secure the side face blowing air volume.

Further, for example, in the example shown in FIG. 17, the conditioned air that has flowed upward (from the back side of the drawing to the front side) through the second air guide passage 302 having a relatively small ventilation resistance flows through the suppression wall 57. It flows into the side face opening 33A while being suppressed. The suppression wall 57 balances the air volume of the conditioned air flowing into the center face opening 33 and the air volume of the conditioned air flowing into the side face opening 33A by suppressing the flow of the air conditioned air. Therefore, as shown in FIG. 17, even if the opening degree of the side face opening 33A is reduced, it is easy to set the side face blowing air volume to a desired air volume.

Thus, the air conditioning unit 20 includes an air passage switching device that switches a flow state of the air flowing through the air passage in the air conditioning case 21 in accordance with the rotational positions of the air mix door 40 and the blowout mode door 50. That is, the air conditioning unit 20 includes an air passage switching device that switches a flow state of the air flowing through the air passage in the air conditioning case 21 according to the rotational positions of the door plate portion 41 and the door plate portion 51.

According to the vehicle air conditioner of the present embodiment, the following effects can be obtained.

The air conditioner of this embodiment includes an air conditioning case 21 in which a passage of conditioned air that blows out into the passenger compartment is formed inside. The air conditioning case 21 includes a center face opening 33 that is connected to a center face air outlet that can blow air conditioned air toward the head of the occupant from the center in the left-right direction in the passenger compartment. Further, the side face opening 33A is provided in the air conditioning case 21 and connected to a side face outlet from which the conditioned air can be blown out from the left and right ends of the vehicle interior toward the passenger head side and the side window glass of the vehicle. It has.

In addition, a blowout mode door 50 for setting a blowout mode of the conditioned air into the passenger compartment is provided. The blow-out mode door 50 includes a rotating shaft portion 52 that is pivotally supported by the air conditioning case 21, a door plate portion 51 that is formed in a circular arc shape at a position away from the axis of the rotating shaft portion 52, and a door in a direction in which the axis extends. It has a pair of side plate part 53 which connects the both ends of the plate part 51, and the rotating shaft part 52. As shown in FIG. The blowing mode door 50 sets the blowing mode of the conditioned air into the vehicle interior according to the rotation position of the door plate portion 51.

The side plate portion 53 is disposed in the opening range of the side face opening portion 33A in the rotation axis direction. The blow-out mode door 50 is provided so as to protrude outward from the side plate portion 53 in the rotation axis direction, and serves as a suppression protrusion that can suppress the flow of conditioned air between the side plate portion 53 and the air conditioning case 21. A suppression wall 57 is provided. When the face blowing mode in which the door plate 51 fully opens both the center face opening 33 and the side face opening 33A is set, the suppression wall 57 suppresses the flow of the conditioned air toward the side face opening 33A. Is prohibited. When the bi-level blowing mode is set in which the door plate portion 51 has the center face opening 33 and the side face opening 33A as the intermediate opening degree, the restraint wall 57 is configured to transmit the conditioned air toward the side face opening 33A. Suppress the flow.

According to this, in the bi-level blowing mode, the door plate portion 51 of the blowing mode door 50 sets the center face opening 33 and the side face opening 33A to an intermediate opening. Moreover, the suppression wall part 57 of the blowing mode door 50 suppresses the flow of the conditioned air that flows between the side plate part 53 and the air conditioning case 21 toward the side face opening 33A. Therefore, it is easy to balance the amount of air blown from the center face air outlet and the amount of air blown from the side face air outlet in the bi-level air outlet mode. Moreover, at the time of the face blowing mode, the suppression wall part 57 does not suppress the flow of the conditioned air that flows between the side plate part 53 and the air conditioning case 21 toward the side face opening 33A. Therefore, even in the face blowing mode, it is easy to balance the amount of air blown from the center face outlet and the amount of air blown from the side face outlet. In this way, an imbalance between the amount of air blown from the center face air outlet and the amount of air blown from the side face air outlet can be suppressed.

Further, the suppression wall portion 57 is a wall portion formed in a circular arc shape at a position away from the rotation axis. According to this, the arc-shaped wall portion can be used as the suppression protrusion. Therefore, a relatively simple wall portion can provide a configuration that easily suppresses the flow of the conditioned air flowing between the side plate portion 53 and the air conditioning case 21 toward the side face opening 33A.

Further, as shown in FIG. 19, the air conditioner of the present embodiment also includes a seal member 59 that is provided on the surface of the door plate portion 51 and seals between the door plate portion 51 and the air conditioning case 21. On the other hand, the suppression wall portion 57 is not covered with the seal member, and the entire surface is exposed.

According to this, the suppression wall part 57 is not provided with the sealing member which seals between the air-conditioning cases 21 on the surface. Therefore, since the seal member 59 that seals between the air conditioning case 21 is provided in the door plate portion 51 and not provided in the suppression wall portion 57, the blowout mode door 50 is relatively easy to manufacture. The sealing member may be a shape corresponding to the shape of the door plate portion 51, and it is not necessary to consider the shape of the suppression wall portion 57.

According to the vehicle air conditioner of the present embodiment, an excellent blown air volume balance can be obtained, for example, as shown in FIG. FIG. 20 shows the ratio of the amount of air blown from each outlet to the total amount of air confirmed by the inventors of the present disclosure. The left part of FIG. 20 is the air volume ratio from the center face outlet CF and the side face outlet SF in the face outlet mode of the present embodiment. The center part of FIG. 20 is the air volume ratio from the center face air outlet CF, the side face air outlet SF, and the foot air outlet Ft in the bi-level air outlet mode of the present embodiment. The right part of FIG. 20 is the air volume ratio from the center face outlet CF, the side face outlet SF, and the foot outlet Ft in the bi-level outlet mode of the comparative example. The comparative example is a vehicle air conditioner similar to the present embodiment except that the suppression wall portion 57 is not provided. According to the vehicle air conditioner of the present embodiment, it is possible to balance the amount of air blown from the center face air outlet and the amount of air blown from the side face air outlet in both the face air blowing mode and the bi-level air blowing mode.

In addition, in this embodiment, although the sealing member was not provided in the suppression wall part 57, as shown in FIG. 21, you may provide the sealing member 591 in the surface of the outer peripheral side of the suppression wall part 57, for example. The seal member 591 can seal between the suppression wall portion 57 and the air conditioning case 21. The vehicle air conditioner is provided on the surface of the door plate portion 51, the seal member 59 that seals between the door plate portion 51 and the air conditioning case 21, and the surface of the suppression wall portion 57. A sealing member 591 that seals between the air conditioning case 21 can be provided. According to this, the door board part 51 and the suppression wall part 57 are equipped with the sealing

members

59 and 591 which seal each between the air-conditioning cases 21 on the surface. Therefore, the distribution of the conditioned air to the center face opening 33 and the side face opening 33A can be controlled with relatively high accuracy. For example, it is possible to further approximate the amount of air blown from the center face air outlet and the amount of air blown from the side face air outlet in the bi-level air outlet mode.

Moreover, the vehicle air conditioner of this embodiment is provided in the air-conditioning case 21, and is connected to air outlets other than the side face air outlet which blows air-conditioned air toward the vehicle interior, and includes a side face including a center face opening 33. An opening other than the opening 33A is provided. Other openings other than the side face opening 33 A are a defroster opening 31, a center face opening 33, and a foot opening 35. In addition, the blowing mode door 50 opens and closes the other openings described above in the door plate portion 51 according to the rotation position of the door plate portion 51, and sets the air-conditioning air blowing mode from the other openings to the vehicle interior. Set.

A first air guide passage 301 that guides the conditioned air to the other opening is formed between the pair of side plate portions 53, and the side plate portion 53 is provided between each of the pair of side plate portions 53 and the air conditioning case 21. A second air guide passage 302 that guides the conditioned air along the side face opening 33A is formed.

According to this, the second air guide passage 302 that guides the conditioned air to the side face opening 33A is a straight passage along the side plate portion 53 of the blowing mode door 50, for example, as indicated by an arrow in FIG. Can do. Therefore, it is possible to reduce the ventilation resistance of the second air guide passage 302 that guides the conditioned air to the side face opening 33A. In addition, in FIG. 22, illustration of the guide member which guides an air conditioning wind is abbreviate | omitted.

Further, since the width in the left-right direction of the air conditioning case 21 can be made substantially the same throughout the entire vertical direction, the conditioned air is formed in the entire air guide passage composed of the first air guide passage 301 and the second air guide passage 302. It is possible to reduce the pressure loss.

In the air conditioner of the present embodiment, a second air guide passage 302 is formed between each of the pair of side plate portions 53 and the air conditioning case 21. The second air guide passage 302 guides the conditioned air to the side face opening 33 A along the side plate portion 53 without passing through the first air guide passage 301.

According to this, the second air guide passage 302 can be a straight passage along the side plate portion 53, and the conditioned air can be guided to the side face opening 33A without going through the first air guide passage 301. Therefore, it is possible to reduce the ventilation resistance of the second air guide passage 302 that guides the conditioned air to the side face opening 33A.

In addition, the pair of side plate portions 53 and the second air guide passage 301 and the second air guide passage 301 are configured to prevent the conditioned air from flowing from the first air guide passage 301 to the second air guide passage 302 via the side plate portion 53. It is arranged between the air guide passage 302. Further, each of the pair of side plate portions 53 prevents the conditioned air from flowing from the second air guide passage 302 to the first air guide passage 301 via the side plate portions 53. And the second air guide passage 302.

In other words, each of the pair of side plate portions 53 is configured so that the conditioned air does not flow from the first air guide passage 301 to the second air guide passage 302 through the portion where each side plate portion 53 is disposed. It is arranged between the air guide passage 301 and the second air guide passage 302. In addition, each of the pair of side plate portions 53 has a first air guide so that the conditioned air does not flow from the second air guide passage 302 to the first air guide passage 301 through the portion where each side plate portion 53 is disposed. It is arranged between the passage 301 and the second air guide passage 302.

According to this, the first air guide passage 301 formed between the pair of side plate portions 53 and the second air guide passage 302 formed outside the pair of side plate portions 53 by the pair of side plate portions 53. In the meantime, the movement of the conditioned air can be suppressed. Therefore, the flow of the conditioned air flowing through the first air guide passage 301 and the flow of the conditioned air flowing through the second air guide passage 302 are not easily disturbed. Moreover, since no opening is provided in the pair of side plate portions 53, the configuration can be simplified.

Further, the vehicle air conditioner of the present embodiment includes a heater core 23 that is provided in the air conditioning case 21 and is a heat exchanger for heating that heats air passing therethrough, and an air mix door 40. The air mix door 40 includes a door plate portion 41 (air mix door plate portion) provided in the air conditioning case 21 on the upstream side in the flow direction of the conditioned air than the door plate portion 51 that is the mode door plate portion. Yes. And according to the movement position of the door board part 41, the mixing ratio of the warm air which passes the heater core 23, and the cool air which bypasses the heater core 23 is adjusted, and the temperature of an air conditioning wind is adjusted. In the rotation axis direction, the length of the door plate portion 41 is larger than the length of the door plate portion 51, and both end portions 411 of the door plate portion 41 are positioned outward from the pair of side plate portions 53.

According to this, the door plate portion 41 of the air mix door 40 protrudes outward from the pair of side plate portions 53 of the blowing mode door 50 in the rotation axis direction. Therefore, the temperature of the conditioned air flowing through the first air guide passage 301 and the temperature of the conditioned air flowing through the second air guide passage 302 are adjusted to be substantially the same temperature according to the movement position of the door plate portion 41. can do.

The air mix door 40 is formed in a circular arc shape at a position where the door plate portion 41 is separated from the rotation axis by a predetermined amount, and the rotation axis of the blowing mode door 50 and the rotation axis of the air mix door 40 are coaxial. Is arranged.

According to this, both the blowing mode door 50 and the air mix door 40 are rotary doors, and both rotary doors can be arranged coaxially. Therefore, the operation area of the blowing mode door 50 and the air mix door 40 can be made relatively compact.

(Other embodiments)
The present disclosure is not limited to the embodiment described above, and can be implemented with various modifications. The present disclosure is not limited to the combinations shown in the embodiments, and can be implemented by various combinations. Embodiments can have additional parts. The portion of the embodiment may be omitted. The parts of the embodiments can be replaced or combined with the parts of the other embodiments. The structure, operation, and effect of the embodiment are merely examples. The technical scope of the present disclosure is not limited to the description of the embodiments. The several technical scopes of this indication are shown by description of the Example mentioned above, and it should be understood that it includes all the changes within the meaning and range equivalent to description.

In the above embodiment, the suppression wall portion 57 is the suppression projection portion, but the suppression projection portion may be a wall portion other than a circular arc surface, for example. Further, the suppression protrusion may be a prismatic protrusion, for example.

Moreover, in the said embodiment, although the air mix door 40 was a rotary door which has the rotating shaft part 42 and the side-plate part 43, it is not limited to a rotary door. For example, the air mix door plate portion may be a circular plate-like door plate portion separated from the rotation axis by a predetermined amount, and the door plate portion may be a rotary slide door that slides in an arc shape around the rotation axis. If such an air mix door is adopted and the rotation axis of the air mix door is arranged coaxially with the rotation axis of the blow-out mode door, the rotational operation area of both doors can be made relatively compact as in the above embodiment. can do.

Also, other types of doors can be used as the air mix door. For example, a so-called cantilever door may be used in which a door plate portion extends from the rotation shaft portion in the radial direction of the rotation shaft portion. A flat sliding door may be used.

In the above embodiment, the air mix door 40 is provided, but the air mix door may not be provided. For example, the present disclosure can be effectively applied to a so-called reheat type air conditioner in which the entire amount of conditioned air is passed through the heater core and the temperature of the conditioned air is adjusted by adjusting the flow rate of the heat medium flowing into the heater core. is there.

Moreover, in the said embodiment, without providing an opening in the side plate part 53 of the blowing mode door 50, the 1st wind guide path 301 and the 2nd guide which were each formed adjacent to both surfaces of the side plate part 53 by the side plate part 53 are shown. The air passage 302 is partitioned. However, the side plate portion 53 may have a small opening that can prevent movement of the conditioned air between the first air guide passage 301 and the second air guide passage 302.

Further, an opening may be provided in the side plate portion 53 to allow the movement of the conditioned air between the first air guide passage 301 and the second air guide passage 302 through the opening.

For example, as shown in FIG. 23, the side plate portion 53 may have an opening 53 a that connects the first air guide passage 301 and the second air guide passage 302. The opening shape of the opening 53a is, for example, a circular shape. The shape of the opening 53a is not limited to a circular shape. The shape of the opening may be, for example, an oval shape. The shape of the opening may be a rectangular shape, for example.

23, a plurality of openings 53a may be formed in the side plate portion 53. The side plate portion 53 may have one opening instead of a plurality. One or a plurality of openings for communicating the first air guide passage 301 and the second air guide passage 302 can be provided in each of the pair of side plate portions 53. Alternatively, one or a plurality of openings that allow the first air guide passage 301 and the second air guide passage 302 to communicate with each other can be provided in only one of the pair of side plate portions 53. Further, the size and position of the opening are not limited to the size and position illustrated in FIG.

In the vehicle air conditioner of this embodiment, the side plate portion 53 has an opening 53a that allows the first air guide passage 301 and the second air guide passage 302 to communicate with each other. According to this, it is possible to suppress the occurrence of a pressure difference between the first air guide passage 301 and the second air guide passage 302. Further, it is possible to contribute to weight reduction of the side plate portion 53.

Further, for example, the side plate portion 53 may have a notch. For example, the side plate portion 53 may have a notch that is notched so as to be recessed from the outer peripheral edge portion toward the rotation axis. That is, the side plate portion 53 may have a recess formed so as to be recessed from the outer peripheral edge toward the rotation axis. The notch in the side plate portion 53 can suppress the movement of the conditioned air between the first air guide passage 301 and the second air guide passage 302. The notch of the side plate portion 53 may allow the movement of the conditioned air between the first air guide passage 301 and the second air guide passage 302 through the notch.

The side plate portion 53 may have a plurality of cutouts or one cutout. One or more notches that connect the first air guide passage 301 and the second air guide passage 302 can be provided in each of the pair of side plate portions 53. Alternatively, one or a plurality of cutouts connecting the first air guide passage 301 and the second air guide passage 302 can be provided only on one side of the pair of side plate portions 53.

Further, in the above embodiment, the air guide passage that guides the conditioned air to the side face opening 33A is a straight passage along the side plate portion 53 of the blowout mode door 50. However, for example, unlike the air conditioning unit shown in FIG. 24, the second wind guide passage 302 is not provided, and the conditioned air is guided to the side face opening 33A through the opening 953 provided in the side plate 53 of the blowing mode door. May be. The present disclosure can be effectively applied to such an air conditioning unit.

In addition, the 2nd wind guide path 302 which flows an air-conditioning air linearly can be formed by utilizing effectively the space formed between the dashed-two dotted line and the wall part 9211 of the air-conditioning case 921 shown in FIG. it can. Further, by providing the second air guide passage 302 between the side plate portion 53 and the air conditioning case 921, there is no need to provide a seal structure between the side plate portion 53 and the air conditioning case 921. In addition, since the width in the left-right direction of the air conditioning case 921 can be made substantially the same in the entire vertical direction, air conditioning is performed in the entire air guide passage composed of the first air guide passage 301 and the second air guide passage 302. It is possible to reduce wind pressure loss.

Moreover, in the said embodiment, the air-conditioning unit 20 was arrange | positioned in the center part of the left-right direction, and the so-called semi center type vehicle air conditioner which arranged the fan unit offset from the center part was demonstrated. However, for example, a so-called full center type air conditioner in which both the blower unit and the air conditioning unit are arranged in the center in the left-right direction may be used.

Claims

An air conditioning case (21) in which a passage through which air-conditioned air blown into the passenger compartment flows is formed;
A center face opening (33) provided in the air conditioning case and connected to a center face outlet from which a conditioned air can be blown out toward a passenger's head from a central portion in the left-right direction of the vehicle in the passenger compartment. When,
A side provided in the air-conditioning case and connected to a side face outlet from which the air-conditioned air can be blown out from both end portions in the left-right direction in the passenger compartment toward a passenger's head and a side window glass of the vehicle A face opening (33A);
A rotation shaft portion (52) pivotally supported by the air conditioning case, a door plate portion (51) formed in a circular arc shape at a position away from the axis line of the rotation shaft portion, and rotation in a direction in which the axis line extends. A pair of side plate portions (53) that connect both end portions of the door plate portion and the rotary shaft portion in the axial direction, and the conditioned air flows into the vehicle interior according to the rotation position of the door plate portion. A blowing mode door (50) for setting a blowing mode for blowing
The side plate portion is disposed within an opening range of the side face opening in the rotation axis direction,
The blow-out mode door is provided so as to protrude outward from the side plate portion in the rotational axis direction, and a suppression protrusion capable of suppressing the flow of the conditioned air between the side plate portion and the air conditioning case. Part (57),
The suppression protrusion is
When the first blowing mode in which the door plate portion fully opens both the center face opening and the side face opening is set, the flow of the conditioned air toward the side face opening is inhibited from being suppressed,
A vehicle that suppresses the flow of the conditioned air toward the side face opening when the second blowing mode is set in which the door plate portion has both the center face opening and the side face opening as an intermediate opening degree. Air conditioner.
The vehicle air conditioner according to claim 1, wherein the restraining protrusion is a wall formed in a circular arc shape at a position away from the axis.
A seal member (59) provided on a surface of the door plate portion and sealing between the door plate portion and the air conditioning case;
The vehicle air conditioner according to claim 1 or 2, further comprising: a seal member (591) provided on a surface of the suppression protrusion and sealing between the suppression protrusion and the air conditioning case.
Provided on the surface of the door plate part, comprising a seal member (59) for sealing between the door plate part and the air conditioning case,
The vehicle air conditioner according to claim 1 or 2, wherein the entire surface of the suppression protrusion is exposed.
Other opening portions other than the side face opening portion including the center face opening portion provided in the air conditioning case and connected to an air outlet other than the side face air outlet that blows out the conditioned air toward the vehicle interior. (31, 33, 35)
The blowing mode door opens and closes the other opening at the door plate according to the rotation position of the door plate, and sets the blowing mode of the conditioned air from the other opening to the vehicle interior. Set,
A first air guide passage (301) for guiding the conditioned air to the other opening is formed between the pair of side plate portions,
A second air guide passage (302) for guiding the conditioned air to the side face opening along the side plate portion is formed between each of the pair of side plate portions and the air conditioning case. The vehicle air conditioner as described in any one of Claims 4-5.
The pair of side plate portions is
It is arranged between the first air guide passage and the second air guide passage,
Inflow of the conditioned air from the first air guide passage to the second air guide passage via the side plate portion, and the air conditioning from the second air guide passage to the first air guide passage via the side plate portion. The vehicle air conditioner according to claim 5, wherein an inflow of wind is prevented.