JP6801478B2 - Air conditioner - Google Patents

Description

The present invention relates to an air conditioner for air conditioning in a vehicle interior.

Conventionally, an air conditioner that is mounted on a vehicle and that harmonizes the air inside the vehicle is known. The air conditioner blows air-conditioned air whose temperature and humidity are adjusted in the air-conditioning case into the vehicle interior from an outlet provided in an instrument panel or the like through a duct connected to a blow-out opening of the air-conditioning case.

Generally, when an air conditioner is mounted on a vehicle having an instrument panel such as a passenger car that is relatively short in the front-rear direction of the vehicle, a duct extending upward from the outlet opening of the air conditioner case or a duct extending diagonally forward and upward is adopted. .. On the other hand, when the air conditioner is mounted on a vehicle having an instrument panel such as a minivan that is relatively long in the front-rear direction of the vehicle, a duct extending forward from the outlet of the air conditioner case or a duct extending diagonally upward forward is adopted. .. In general, when the underbody of a passenger car and the underbody of a minivan are common, the air conditioning cases mounted on those vehicles are common.

Patent Document 1 describes a duct that connects a defroster outlet provided on the upper surface of an instrument panel of a vehicle and a defroster outlet opening of an air conditioner case. The air passage formed inside this duct extends upward from the defroster outlet opening of the air conditioning case, a part extending from the upper end of the part to the front of the vehicle, and a part extending from the front end of the part to the front window glass. It has a part that extends diagonally backward and upward along the line. It can be said that this duct is preferably used in a vehicle in which an instrument panel such as a minivan is relatively long in the front-rear direction of the vehicle.

Japanese Unexamined Patent Publication No. 2015-3605

However, the duct described in Patent Document 1 is a connection portion between a portion of the air passage formed inside that extends upward from the defroster outlet opening of the air conditioning case and a portion that extends from the upper end portion of the portion to the front of the vehicle. However, it is bent almost at a right angle. Therefore, this duct has a large pressure loss of the conditioned air flowing through the air passage. Therefore, the air conditioner using this duct may increase the noise due to the air conditioner wind.

In view of the above points, it is an object of the present invention to provide an air conditioner capable of reducing the pressure loss of the air blown into the vehicle interior.

In order to achieve the above object, the invention according to claim 1 is an air conditioner for air conditioning in a vehicle interior.
An air conditioning case (10) having a ventilation passage (11) through which air flows, and a plurality of outlet openings (13, 14, 15) for blowing out air flowing through the ventilation passage.
Duct members (30, 31) connected to the defroster outlet (15) among the plurality of outlets and having an air passage for flowing air toward the defroster outlet (4) provided on the instrument panel (3). , 32, 33, 60), and
With the air-conditioning case mounted on the vehicle, the defroster outlet opening is inclined diagonally downward in the direction of gravity from the rear part (151) of the vehicle to the front part (152) of the vehicle, and the air-conditioning case. Of the upper wall (22) of the air-conditioning case, which is the upper surface of the air-conditioning case mounted on the vehicle, the portion on the front side of the vehicle from the defroster outlet is a duct member extending forward from the outlet (22). When 30 and 31) are installed, they are formed so as not to protrude upward from the portion of the defroster outlet opening on the front side of the vehicle at the portion below the duct member .

According to this, duct members having various shapes can be connected to the defroster outlet opening of the air conditioning case. That is, as the duct member, a member extending forward from the blowout opening, a member extending diagonally upward in front, a member extending upward, or the like can be adopted depending on the vehicle type. In this air conditioner, the outlet opening of the air conditioner case to which the duct member is connected is inclined diagonally downward in the direction of gravity from the rear part of the vehicle toward the front part of the vehicle, so that any duct can be used depending on the vehicle type. Even when the member is adopted, the bending of the duct member is small. Therefore, this air conditioner can reduce the pressure loss of the air blown from the ventilation path of the air conditioner case through the duct member into the vehicle interior. Therefore, this air conditioner can reduce the noise caused by the air conditioner wind.

The reference numerals in parentheses attached to each of the above configurations indicate an example of the correspondence with the specific configurations described in the embodiments described later.

It is a figure which shows the cross-sectional structure of the air conditioner which concerns on 1st Embodiment. It is sectional drawing which shows one aspect of the air conditioner which concerns on 1st Embodiment. It is sectional drawing which shows another aspect of the air conditioner which concerns on 1st Embodiment. It is sectional drawing which shows still another aspect of the air conditioner which concerns on 1st Embodiment. It is a figure which shows the cross-sectional structure of the air conditioner which concerns on 2nd Embodiment. It is a figure which shows the cross-sectional structure of the air conditioner which concerns on 2nd Embodiment. It is a figure which shows the cross-sectional structure of the air conditioner which concerns on 3rd Embodiment. It is a figure which shows the cross-sectional structure of the air conditioner which concerns on 3rd Embodiment. It is a figure which shows the cross-sectional structure of the air conditioner of a comparative example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each of the following embodiments, parts that are the same or equal to each other will be described with the same reference numerals.

(First Embodiment)
The first embodiment will be described with reference to the drawings. The air conditioner of the present embodiment is arranged inside an instrument panel of a vehicle such as a passenger car or a minivan. The air conditioner sucks in one or both of the inside air that is the air inside the vehicle and the outside air that is the air outside the vehicle, adjusts the temperature and humidity of the sucked air, and blows it out into the vehicle to harmonize the air inside the vehicle. Is to do.

As shown in FIGS. 1 to 4, the air conditioner 1 of the present embodiment includes an air conditioner case 10, a duct member 30, and the like. FIG. 1 shows that duct members 30 having various shapes can be attached to the air conditioning case 10. FIGS. 2 to 4 show a state in which the plurality of duct members 30 shown in FIG. 1 are attached to the air conditioning case 10, respectively.

In FIGS. 1 to 4, the direction of gravity when the air conditioner 1 is mounted on the vehicle is indicated by an arrow VD, and the front-rear direction of the vehicle is indicated by an arrow LD.

First, the air conditioning case 10 and its internal configuration will be described.

The air conditioning case 10 is made of a resin having a certain degree of elasticity and excellent strength. Examples of the resin forming the air conditioning case 10 include polypropylene. The air conditioning case 10 has a ventilation passage 11 through which air flows inside the outer wall. Further, the air conditioning case 10 has a partition wall 12 for controlling the flow of air inside the ventilation passage 11.

The air-conditioning case 10 has an inside air introduction port (not shown) for introducing inside air from a predetermined location in the vehicle interior to the upstream side of the evaporator 16 in the ventilation passage 11, and a diagram for introducing outside air into the ventilation passage 11 from outside the vehicle. It has an outside air inlet not shown. The inside air introduction port and the outside air introduction port are arranged on the front side or the back side in the vertical direction of the paper surface of FIG. A duct (not shown) configured as a separate member from the air conditioning case 10 may be connected to the inside air introduction port or the outside air introduction port. In that case, air is introduced into the ventilation passage 11 from the inside air introduction port or the outside air introduction port through those ducts.

Further, the air conditioning case 10 has a plurality of outlet openings for blowing air conditioning air from the ventilation passage 11 into the vehicle interior on the downstream side in the air flow direction of the ventilation passage 11. The plurality of outlet openings are composed of a face outlet opening 13, a foot outlet opening 14, and a defroster outlet opening 15. The face blowing opening 13 blows air-conditioning air toward the upper body of the occupant seated in the front seat. The foot blowing opening 14 blows air-conditioning air toward the feet of the occupant. The defroster blowing opening 15 blows air conditioning air toward the front window glass 2 of the vehicle.

Inside the air conditioning case 10, an inside / outside air switching door (not shown), a blower (not shown), an evaporator 16, a heater core 17, an air mix door 18, a face door 19, a foot door 20, and the like are provided. The inside / outside air switching door and the blower are also arranged on the front side or the back side in the vertical direction of the paper surface in FIG.

The inside / outside air switching door continuously adjusts the opening area of the inside air introduction port and the opening area of the outside air introduction port. As a result, the ratio of the air volume of the inside air and the outside air introduced into the ventilation passage 11 is adjusted.

The blower forms an air flow in the ventilation passage 11. The air introduced into the ventilation passage 11 from the inside air introduction port or the outside air introduction port by the drive of the blower flows through the ventilation passage 11, and is any one of the defroster outlet opening 15, the face outlet opening 13, and the foot outlet opening 14. Blow out from.

The evaporator 16 is a heat exchanger that cools the air flowing through the ventilation passage 11. The evaporator 16 constitutes a well-known refrigeration cycle together with a compressor, a condenser, an expansion valve and the like (not shown). The evaporator 16 is arranged on the downstream side of the expansion valve and on the upstream side of the compressor in the refrigeration cycle. A refrigerant that has been decompressed by an expansion valve and is in a gas-liquid two-layer state flows through a tube (not shown) included in the evaporator 16. The air flowing through the ventilation passage 11 is cooled by heat exchange between the refrigerant flowing inside the tube of the evaporator 16 and the air flowing through the ventilation passage 11.

The heater core 17 is a heat exchanger that heats the air flowing through the ventilation passage 11. Hot water flows inside a tube (not shown) included in the heater core 17. The air flowing through the ventilation passage 11 is heated by heat exchange between the hot water flowing inside the tube of the heater core 17 and the air flowing through the ventilation passage 11.

Two air mix doors 18 are provided in the ventilation passage 11 between the evaporator 16 and the heater core 17. The air mix door 18 is a sliding film door, which can reciprocate in the directions of arrows A and B, respectively. The air mix door 18 is driven by the rotation of the gear 21. The air mix door 18 adjusts the ratio of the air volume that bypasses the heater core 17 after passing through the evaporator 16 and the air volume that passes through the heater core 17 after passing through the evaporator 16.

A face door 19 is provided in the vicinity of the face outlet opening 13. The face door 19 is a rotary door and is rotatable in the direction of arrow C. The face door 19 opens and closes the face outlet opening 13.

A foot door 20 is provided in the vicinity of the foot outlet opening 14. The foot door 20 is a plate door and is rotatable in the direction of arrow D. The foot door 20 opens and closes the foot outlet opening 14.

The face door 19 and the foot door 20 are driven by an actuator such as a servomotor (not shown). The face door 19 and the foot door 20 are connected by a link mechanism (not shown) or the like. In the present embodiment, it is possible to simultaneously drive the face door 19 and the foot door 20 via the link mechanism by one actuator.

The air-conditioning case 10 of the present embodiment is not provided with a defroster door and a defroster drive unit for driving the defroster door. The defroster door 40 and the defroster door drive unit 41 are provided on the duct member 30. Therefore, the air-conditioning case 10 of the present embodiment has a large degree of freedom in design regarding the shape of the defroster outlet opening 15.

The defroster outlet opening 15 included in the air conditioning case 10 of the present embodiment is inclined diagonally downward in the direction of gravity from the portion 151 on the rear side of the vehicle toward the portion 152 on the front side of the vehicle when the air conditioning case 10 is mounted on the vehicle. ing. That is, the defroster outlet opening 15 is inclined so that the portion 152 on the front side of the vehicle is lower than the portion 151 on the rear side of the vehicle in the direction of gravity.

Further, the portion 152 on the front side of the vehicle in the defroster outlet opening 15 and the upper wall 22 of the air conditioner case 10 are continuously formed. The upper wall 22 of the air-conditioning case 10 refers to a portion of the outer wall of the air-conditioning case 10 that becomes the upper surface when the air-conditioning case 10 is mounted on the vehicle.

In the present embodiment, the fact that the portion 152 on the front side of the vehicle and the upper wall 22 of the air conditioning case 10 of the defroster outlet opening 15 are continuously formed means that the portion of the defroster outlet opening 15 on the front side of the vehicle is formed. It means that there is no outer wall or the like that changes the direction of the airflow flowing through the ventilation passage 11 of the air conditioning case 10 between the 152 and the upper wall 22 of the air conditioning case 10.

A duct member 30 having various shapes can be attached to the defroster outlet opening 15 of the air conditioning case 10 thus formed.

Next, the configuration of the duct member 30 will be described.

FIG. 1 illustrates three types of duct members 30 attached to the defroster outlet opening 15 of the air conditioning case 10. All three types of duct members 30 shown in FIG. 1 are intermediate ducts. All three types of intermediate ducts 31, 32, 33 are connected to the defroster outlet opening 15, and air passages 34, 35 for flowing air toward the defroster outlet 4 provided on the upper surface of the instrument panel 3. , 36. The air passages 34, 35, and 36 of the three types of intermediate ducts 31, 32, and 33 all extend linearly. Further, all of the three types of intermediate ducts 31, 32, and 33 have a fitting projection 37 capable of fitting into a fitting groove 153 provided around the defroster outlet opening 15 of the air conditioning case 10. ing.

The intermediate ducts 31, 32, and 33 attached to the defroster outlet opening 15 of the air conditioning case 10 of the present embodiment are not limited to these three types, and various shapes may be adopted according to the shape of the vehicle. Is possible.

Of the three types of duct members 30 shown in FIG. 1, the intermediate duct described on the left side of the paper is referred to as the first intermediate duct 31. The first intermediate duct 31 extends forward from the defroster outlet opening 15 to the front of the vehicle.

Of the three types of duct members 30 shown in FIG. 1, the intermediate duct described in the center of the paper is referred to as the second intermediate duct 32. The second intermediate duct 32 extends upward from the defroster outlet opening 15.

Of the three types of duct members 30 shown in FIG. 1, the intermediate duct described on the right side of the paper is referred to as the third intermediate duct 33. The third intermediate duct 33 extends obliquely upward in front of the vehicle from the defroster outlet opening 15.

The first intermediate duct 31 and the third intermediate duct 33 are preferably applied to a vehicle in which the instrument panel 3 such as a minivan is relatively long in the front-rear direction of the vehicle. The second intermediate duct 32 is preferably applied to a vehicle such as a passenger car in which the instrument panel 3 is relatively short in the front-rear direction of the vehicle.

The intermediate ducts 31, 32, and 33 are provided with a defroster door 40 and a defroster door driving unit 41 for driving the defroster door 40. The defroster door 40 is, for example, a plate door, and is rotatable in the directions of arrows E, F, and G, respectively. The defroster door 40 opens and closes the air passages 34 of the intermediate ducts 31, 32, 33. The defroster door drive unit 41 drives and controls the defroster door 40 independently of the face door 19 and the foot door 20 provided in the air conditioning case 10. The defroster door drive unit 41 is composed of an actuator such as a servo motor. The defroster door drive unit 41 can be attached to the outer walls of the intermediate ducts 31, 32, and 33 by a fitting type without using screws or the like.

FIG. 2 shows a state in which the first intermediate duct 31 is attached to the defroster outlet opening 15 of the air conditioning case 10. Further, in FIG. 2, an example of the outlet duct 51 connected to the end portion of the first intermediate duct 31 opposite to the defroster outlet opening 15 is shown by a broken line. The outlet duct 51 has an air passage 52 for flowing air toward the defroster outlet 4 provided on the upper surface of the instrument panel 3 of the vehicle.

As shown by the arrow F1 in FIG. 2, the conditioned air flows from the ventilation passage 11 of the air conditioning case 10 through the air passage 34 of the first intermediate duct 31 through the defroster outlet opening 15. When the first intermediate duct 31 is used, the ventilation passage 11 of the air conditioning case 10 and the air passage 34 of the first intermediate duct 31 are connected in a state close to a straight line, so that the pressure loss between them is small. Become. Therefore, as shown by the arrow F1, the conditioned air quickly flows through the ventilation passage 11 of the air conditioning case 10 and the air passage 34 of the first intermediate duct 31.

FIG. 3 shows a state in which the second intermediate duct 32 is attached to the defroster outlet opening 15 of the air conditioning case 10. Further, in FIG. 3, an example of the outlet duct 53 connected to the end portion of the second intermediate duct 32 opposite to the defroster outlet opening 15 is shown by a broken line. The outlet duct 53 has an air passage 54 for flowing air toward the defroster outlet 4 provided on the upper surface of the instrument panel 3 of the vehicle.

As shown by the arrow F2 in FIG. 3, the conditioned air flows from the ventilation passage 11 of the air conditioning case 10 through the air passage 35 of the second intermediate duct 32 through the defroster outlet opening 15. Even when the second intermediate duct 32 is used, the ventilation passage 11 of the air conditioning case 10 and the air passage 35 of the second intermediate duct 32 are connected in a state close to a straight line, so that the pressure loss between them is small. It becomes a thing. Therefore, as shown by the arrow F2, the conditioned air quickly flows through the ventilation passage 11 of the air conditioning case 10 and the air passage 35 of the second intermediate duct 32.

FIG. 4 shows a state in which the third intermediate duct 33 is attached to the defroster outlet opening 15 of the air conditioning case 10. Further, in FIG. 4, an example of the outlet duct 55 connected to the end portion of the third intermediate duct 33 opposite to the defroster outlet opening 15 is shown by a broken line. The outlet duct 55 has an air passage 56 for flowing air toward the defroster outlet 4 provided on the upper surface of the instrument panel 3 of the vehicle.

As shown by the arrow F3 in FIG. 4, the conditioned air flows from the ventilation passage 11 of the air conditioning case 10 through the air passage 36 of the third intermediate duct 33 through the defroster outlet opening 15. Even when the third intermediate duct 33 is used, the ventilation passage 11 of the air conditioning case 10 and the air passage 36 of the third intermediate duct 33 are connected in a state close to a straight line, so that the pressure loss between them is small. It becomes a thing. Therefore, as shown by the arrow F3, the conditioned air quickly flows through the ventilation passage 11 of the air conditioning case 10 and the air passage 36 of the third intermediate duct 33.

Here, in order to compare with the air conditioner 1 of the first embodiment described above, the air conditioner of the comparative example will be described.

As shown in FIG. 9, in the air conditioner 100 of the comparative example, the defroster door 40 is provided in the vicinity of the defroster outlet opening 15 in the ventilation passage 11 of the air conditioner case 10. The defroster door 40 is rotatable in the direction of arrow H. The defroster door 40 opens and closes the defroster outlet opening 15. Further, the air conditioning case 10 is provided with a defroster door driving unit 41 for driving the defroster door 40. Therefore, the air-conditioning case 10 of the comparative example has a larger physique than the air-conditioning case 10 described in the first embodiment because the defroster door 40 and the defroster door drive unit 41 are arranged.

The defroster outlet opening 15 of the air conditioning case 10 of the comparative example is substantially horizontal when the air conditioning case 10 is mounted on the vehicle. In addition, in the present specification, substantially horizontal includes not only horizontal but also an inclination of about 10 ° with respect to horizontal.

Further, in the comparative example, a wall 23 extending in the vertical direction is formed between the portion 152 on the front side of the vehicle and the upper wall 22 of the air conditioner case 10 in the defroster outlet opening 15. Therefore, the direction of the air-conditioned air flowing from the ventilation passage 11 of the air-conditioning case 10 to the intermediate duct 300 through the defroster outlet opening 15 is regulated by the wall 23 extending in the vertical direction thereof, and as shown by the arrow F4, the defroster outlet opening It is blown upward from the part 15.

An intermediate duct 300 is also attached to the defroster outlet opening 15 of the air conditioning case 10 of the comparative example. In the comparative example, the intermediate duct 300 is bent in an L shape. That is, in the air passage 310 of the intermediate duct 300 of the comparative example, the connection portion between the portion 301 extending upward from the defroster outlet opening 15 and the portion 302 extending forward from the upper end portion of the portion 301 is bent at a substantially right angle. ing. Therefore, as shown by the arrow F5, the air-conditioning air flowing through the air passage 310 of the intermediate duct 300 of the comparative example has a portion 301 extending upward from the defroster outlet opening 15 and a portion extending forward from the upper end portion of the portion 301. At the connection point with 302, the direction of flow changes almost at a right angle. Therefore, the intermediate duct 300 of the comparative example has a large pressure loss of the air conditioning air flowing through the air passage 310. Therefore, in the air conditioner 1 of the comparative example, there is a concern that the noise due to the air conditioning wind becomes large.

The air conditioner 1 of the first embodiment has the following effects on the air conditioner 100 of the comparative example.

(1) In the first embodiment, when the air conditioning case 10 is mounted on the vehicle, the defroster outlet opening 15 of the air conditioning case 10 is directed from the portion 151 on the rear side of the vehicle toward the portion 152 on the front side of the vehicle in the direction of gravity. It is tilted diagonally downward.

According to this, duct members 30 having various shapes can be connected to the defroster outlet opening 15 of the air conditioning case 10. That is, as the duct member 30, an intermediate duct 31 extending forward of the vehicle from the defroster outlet opening 15, an intermediate duct 33 extending diagonally upward forward, an intermediate duct 32 extending upward, and the like can be adopted depending on the vehicle type. In this air conditioner 1, the defroster outlet opening 15 of the air conditioner case 10 is inclined diagonally downward in the direction of gravity from the portion 151 on the rear side of the vehicle toward the portion 152 on the front side of the vehicle, so that any duct can be used depending on the vehicle type. Even when the member 30 is adopted, the bending of the duct member 30 is small. Therefore, the air conditioner 1 can reduce the pressure loss of the air blown from the ventilation passage 11 of the air conditioner case 10 through the duct member 30 into the vehicle interior. Therefore, the air conditioner 1 can reduce the noise caused by the air conditioner wind.

(2) In the first embodiment, the portion 152 on the front side of the vehicle in the defroster outlet opening 15 and the upper wall 22 of the air conditioning case 10 which is the upper surface when the air conditioning case 10 is mounted on the vehicle are continuous. Is formed.

According to this, in the air conditioning case 10, a wall 23 extending in the vertical direction as in the comparative example is provided between the portion 152 on the front side of the vehicle in the defroster outlet opening 15 and the upper wall 22 of the air conditioning case 10. It is not a configuration. Therefore, the direction of the air conditioning air flowing from the ventilation passage 11 of the air conditioning case 10 to the duct member 30 through the defroster outlet opening 15 is not regulated by the wall 23 extending in the vertical direction thereof. Therefore, in this air conditioner 1, regardless of whether the direction of the duct member 30 is in front of the vehicle, diagonally upward or upward, from the ventilation passage 11 of the air conditioning case 10, the air passages 34, 35 of the duct member 30 The pressure loss of the air flowing through the 36 can be reduced.

(3) In the first embodiment, the duct member 30 is provided with a defroster door 40 that opens and closes the air passages 34, 35, and 36 of the duct member 30.

According to this, the defroster door 40 provided in the air conditioning case 10 can be abolished as in the comparative example, and the air conditioning case 10 can be miniaturized. Further, the number of doors 18, 19 and 20 provided in the air conditioning case 10 can be reduced, and the work of assembling the plurality of doors 18, 19 and 20 to the air conditioning case 10 becomes easy. Further, in general, the air-conditioning case 10 may be provided with partition walls for partitioning the ventilation passages 11 on the left and right in the width direction of the vehicle, but the duct member 30 is not provided with such partition walls. Therefore, by assembling the defroster door 40 to the duct member 30 without the partition wall 12, the man-hours for assembling the defroster door 40 can be reduced. Further, when a partition wall for partitioning the ventilation passage 11 to the left and right in the vehicle width direction is provided in the air conditioning case 10, a notch hole for assembling the defroster door 40 is not provided in the partition wall. It is possible to improve the independence of the air conditioning air flowing through the left and right ventilation passages 11 in the air conditioning case 10.

(4) In the first embodiment, the duct member 30 is provided with a defroster door driving unit 41 that independently drives the defroster door 40.

According to this, since the defroster door drive unit 41 is not provided in the air conditioning case 10, the air conditioning case 10 can be miniaturized. Further, the doors 18, 19 and 20 provided on the air conditioning case 10 and the defroster door 40 provided on the duct member 30 can be individually driven and controlled.

(5) In the first embodiment, the duct member 30 is an intermediate duct 31, 32, 33 connected to the defroster outlet opening 15 and the inner air passages 34, 35, 36 extend linearly.

According to this, the air flowing through the air passages 34, 35, 36 of the intermediate ducts 31, 32, 33 is configured so that the air passages 34, 35, 36 of the intermediate ducts 31, 32, 33 extend linearly. Pressure loss can be reduced. Therefore, the air conditioner 1 can reduce the noise caused by the air conditioner wind.

(Second Embodiment)
The second embodiment will be described. The second embodiment is a modification of the configuration of the duct member with respect to the first embodiment, and the other parts are the same as those of the first embodiment. Therefore, only the parts different from the first embodiment will be described.

As shown in FIGS. 5 and 6, the intermediate duct of the second embodiment has a defroster side air passage 61 communicating with the defroster outlet opening 15 of the air conditioning case 10 and a face side air passage communicating with the face outlet opening 13. An integrated intermediate duct 60 integrally configured with 62. Note that FIGS. 5 and 6 illustrate the position of the instrument panel force 5 that connects the left and right sides of the vehicle body and the position of the instrument panel 3 on the rear side of the vehicle. The integrated intermediate duct 60 is provided inside the instrument panel 3 and on the front side of the vehicle with respect to the instrument panelin force 5.

Also in the second embodiment, the defroster door 40 and the defroster door drive unit 41 are provided in the integrated intermediate duct 60. Therefore, since the defroster door 40 and the defroster door drive unit 41 are not provided in the air conditioner case 10, the air conditioner case 10 has a large degree of freedom in design regarding the shape of the defroster outlet opening 15. Therefore, also in the second embodiment, the defroster outlet opening 15 of the air conditioning case 10 is inclined diagonally downward in the direction of gravity from the portion 151 on the rear side of the vehicle toward the portion 152 on the front side of the vehicle. Further, the portion 152 on the front side of the vehicle in the defroster outlet opening 15 and the upper wall 22 of the air conditioner case 10 are continuously formed. Not only the shape of the integrated intermediate duct 60 shown in FIGS. 5 and 6, but also various shapes of intermediate ducts can be attached to the defroster outlet opening 15 of the air conditioning case 10 of the second embodiment. In that case, also in the second embodiment, it is possible to reduce the pressure loss of the air blown into the vehicle interior from the ventilation passage 11 of the air conditioning case 10 through the integrated intermediate duct 60, as in the first embodiment. Further, in the second embodiment, the man-hours for assembling can be reduced by simultaneously assembling the integrated intermediate duct 60 to the defroster outlet opening 15 and the face outlet opening 13 of the air conditioning case 10.

(Third Embodiment)
The third embodiment will be described. The third embodiment is a modification of the configuration of the air conditioning case and the duct member with respect to the second embodiment, and the other parts are the same as those of the second embodiment. Therefore, only the parts different from the second embodiment will be described. To do.

As shown in FIGS. 7 and 8, in the third embodiment, a wall 23 extending in the vertical direction is provided between the portion 152 on the front side of the vehicle in the defroster outlet opening 15 and the upper wall 22 of the air conditioner case 10. Has been done. Therefore, the direction of the air-conditioning air flowing from the ventilation passage 11 of the air-conditioning case 10 to the duct member 30 through the defroster outlet opening 15 is regulated by the wall 23 extending in the vertical direction thereof, and is blown upward from the defroster outlet opening 15. To.

However, the air conditioner 1 of the third embodiment also includes the integrated intermediate duct 60 as in the second embodiment. The defroster door 40 and the defroster door drive unit 41 are provided in the integrated intermediate duct 60. Therefore, also in the third embodiment, the man-hours for assembling the integrated intermediate duct 60 to the defroster outlet opening 15 and the face outlet opening 13 of the air conditioning case 10 can be reduced. Further, also in the third embodiment, as in the first and second embodiments, the number of doors provided in the air conditioning case 10 can be reduced, and the door assembly work for the air conditioning case 10 can be easily performed. Can be done.

(Other embodiments)
The present invention is not limited to the above-described embodiment, and can be appropriately modified within the scope of the claims. Further, the above-described embodiments are not unrelated to each other, and can be appropriately combined unless the combination is clearly impossible. Further, in each of the above embodiments, it goes without saying that the elements constituting the embodiment are not necessarily essential except when it is clearly stated that they are essential and when they are clearly considered to be essential in principle. No. Further, in each of the above embodiments, when numerical values such as the number, numerical values, amounts, and ranges of the constituent elements of the embodiment are mentioned, when it is clearly stated that they are particularly essential, and in principle, the number is clearly limited to a specific number. It is not limited to the specific number except when it is done. In addition, in each of the above embodiments, when referring to the shape, positional relationship, etc. of a component or the like, the shape, unless otherwise specified or limited in principle to a specific shape, positional relationship, etc. It is not limited to the positional relationship.

For example, the shape of the air conditioning case 10 is not limited to that shown in the drawings referred to in the first to third embodiments, and the defroster outlet opening 15 is from the portion 151 on the rear side of the vehicle to the portion 152 on the front side of the vehicle. Various shapes can be adopted as long as they are inclined diagonally downward in the direction of gravity.

Further, for example, the position and shape of the defroster door 40 provided on the duct member are not limited to those shown in the drawings referred to in the first to third embodiments, and may be various positions and shapes. It is possible.

(Summary)
According to the first aspect shown in part or all of the above-described embodiment, the air conditioner for air conditioning in the vehicle interior includes an air conditioner case and a duct member. The air conditioning case has a ventilation path through which air flows, and a plurality of outlet openings for blowing out air flowing through the ventilation path. The duct member is connected to the defroster outlet among the plurality of outlet openings, and has an air passage for flowing air toward the defroster outlet provided on the instrument panel. With the air conditioning case mounted on the vehicle, the defroster outlet opening is inclined diagonally downward in the direction of gravity from the portion on the rear side of the vehicle toward the portion on the front side of the vehicle.

According to the second aspect, the portion of the defroster outlet opening on the front side of the vehicle and the upper wall of the air conditioning case which is the upper surface when the air conditioning case is mounted on the vehicle are continuously formed.

According to this, the air conditioner case has a configuration in which a wall extending in the vertical direction as in the comparative example is not provided between the portion of the defroster outlet opening on the front side of the vehicle and the upper wall of the air conditioner case. Therefore, the direction of the air conditioning air flowing from the ventilation path of the air conditioning case to the duct member through the defroster outlet opening is not regulated by the wall extending in the vertical direction. Therefore, in this air conditioner, regardless of whether the direction of the duct member connected to the defroster outlet opening of the air conditioner case is in front of the vehicle, diagonally upward in the front, or upward, the duct member is connected to the air passage of the air conditioner case. The pressure loss of the air flowing through the air passage can be reduced.

According to a third aspect, the air conditioner further comprises a defroster door provided on the duct member. The defroster door opens and closes the air passage of the duct member.

According to this, the air conditioning case can be miniaturized by not providing the defroster door in the air conditioning case. Further, the number of doors provided in the air conditioning case can be reduced, and the work of assembling the doors to the air conditioning case becomes easy. Further, in general, the air-conditioning case may be provided with partition walls for partitioning the ventilation passages on the left and right in the vehicle width direction, but the duct member is not provided with such partition walls. Therefore, by assembling the defroster door to the duct member having no partition wall, the man-hours for assembling the defroster door can be reduced. In addition, when a partition wall is provided in the air conditioning case, there is no need to provide a notch hole for assembling the defroster door in the partition wall, so that the air conditioning air flowing through the left and right ventilation passages in the air conditioning case is independent. The sex can be improved.

According to the fourth aspect, the air conditioner further includes a defroster door drive unit provided on the duct member. The defroster door drive unit drives the defroster door independently.

According to this, since the defroster door drive unit is not provided in the air conditioning case, the air conditioning case can be miniaturized. Further, the door provided in the air conditioning case and the defroster door provided in the duct member can be individually driven and controlled.

According to the fifth aspect, the duct member is an intermediate duct connected to the defroster outlet opening and the inner air passage extends linearly. The air conditioner further includes an outlet duct that is connected to the end of the intermediate duct opposite to the defroster outlet opening and has an air passage for allowing air to flow toward the defroster outlet provided on the instrument panel.

According to this, the pressure loss of the air flowing through the air passage of the intermediate duct can be reduced by configuring the air passage of the intermediate duct to extend linearly. Therefore, this air conditioner can reduce the noise caused by the air conditioner wind.

According to the sixth aspect, the air conditioner for air conditioning in the vehicle interior includes an air conditioner case, a duct member, and a defroster door. The air conditioning case has a ventilation passage through which air flows, and a plurality of outlet openings for blowing out air flowing through the ventilation passage. The duct member is connected to the defroster outlet among the plurality of outlet openings, and has an air passage for flowing air toward the defroster outlet provided on the instrument panel. The defroster door is provided on the duct member and opens and closes the air passage of the duct member.

According to this, the air conditioning case can be miniaturized by not providing the defroster door in the air conditioning case. Further, the number of doors provided in the air conditioning case can be reduced, and the work of assembling the doors to the air conditioning case becomes easy. Further, by assembling the defroster door to the duct member having no partition wall, the man-hours for assembling the defroster door can be reduced.

According to the seventh aspect, the air conditioner further includes a defroster door drive unit provided on the duct member. The defroster door drive unit drives the defroster door independently.

According to this, since the defroster door drive unit is not provided in the air conditioning case, the air conditioning case can be miniaturized. Further, the door provided in the air conditioning case and the defroster door provided in the duct member can be individually driven and controlled.

According to the eighth aspect, the duct member includes a defroster-side air passage that communicates with the defroster outlet among the plurality of outlets, and a face-side air passage that communicates with the face outlet among the plurality of outlets. Is an integrated intermediate duct that is integrally configured with.

According to this, it is possible to reduce the man-hours for assembling the integrated intermediate duct to the defroster outlet opening and the face outlet opening of the air conditioning case.

1 Air conditioner 4 Defroster outlet 10 Air conditioner case 11 Ventilation passage 13 Face outlet opening 14 Foot outlet opening 15 Defroster outlet opening 30, 31, 32, 33, 60 Duct member

Claims (6)

An air conditioner that harmonizes the air inside the vehicle.
An air-conditioning case (10) having a ventilation passage (11) through which air flows, and a plurality of outlet openings (13, 14, 15) for blowing out air flowing through the ventilation passage.
A duct member (30, 30) which is connected to the defroster outlet (15) among the plurality of outlets and has an air passage for flowing air toward the defroster outlet (4) provided on the instrument panel (3). 31, 32, 33, 60) and
In a state where the air conditioner case is mounted on the vehicle, the defroster outlet is inclined diagonally downward in the direction of gravity from the rear portion (151) of the vehicle to the front portion (152) of the vehicle. Of the upper wall (22) of the air conditioner case, which is the upper surface when the air conditioner case is mounted on the vehicle, the portion on the front side of the vehicle from the defroster outlet is the duct member from the outlet of the vehicle. It is formed so as not to protrude upward from the portion of the defroster outlet opening on the front side of the vehicle at the portion below the duct member when the one extending forward (30, 31) is installed . Air conditioner. A portion of the defroster outlet on the front side of the vehicle and a portion of the upper wall (22) of the air conditioner case, which is the upper surface of the air conditioner case mounted on the vehicle, on the vehicle front side of the defroster outlet. Is the air conditioner according to claim 1, which is continuously formed. The air conditioner according to claim 1 or 2, further comprising a defroster door (40) provided on the duct member and opening and closing an air passage of the duct member. The air conditioner according to claim 3, further comprising a defroster door driving unit (41) provided on the duct member and driving the defroster door independently. The duct member is an intermediate duct (31, 32, 33) connected to the defroster outlet and having an inner air passage (34, 35, 36) extending linearly.
The air conditioner is connected to an end of the intermediate duct opposite to the defroster outlet opening, and an air passage (52, 54) for flowing air toward the defroster outlet provided on the instrument panel. , 56) The air conditioner according to any one of claims 1 to 4, further comprising an outlet duct (51, 53, 55). The duct member includes a defroster-side air passage (61) that communicates with the defroster outlet among the plurality of outlets, and a face side that communicates with the face outlet (13) among the plurality of outlets. The air conditioner according to any one of claims 1 to 5 , wherein the integrated intermediate duct (60) integrally formed with the air passage (62).

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