JPH1148753A - Air-conditioning device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air-conditioning device for a vehicle to easily set modes wherein air is fed to both a car room on the front side and a car room on the rear side or mainly one of the two car rooms. SOLUTION: An air flow passage F on the foot side to guide air to the air outlet 25c on the foot side for a front and the air outlet 25d on the foot side for a rear of air outlets is formed in a casing 21 in which an air introduction port arranged upper stream and a plurality of air outlets to feed air, fed through the air introduction, to a plurality of spots in a car room are formed. Further, a cover part 29 at which partition parts 29a to partition the air flow passage F for a foot into air flow passages F1 for a front and air flow passages F2 for a rear corresponding to an air outlet 25c on the foot side for a front and an air outlet 25d on the foot side for a rear are formed is removably mounted on the casing 21. The flow passage sectional areas of an air flow passage F1 for a front and an air flow passage F2 for a rear are set according to a distance between the partition parts 29a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner which is installed in a vehicle such as an automobile and performs air conditioning such as cooling and heating in a passenger compartment.

[0002]

2. Description of the Related Art A conventional vehicle air conditioner is, for example, shown in FIG.
As shown in FIG. 1, a suction port 1 for sucking inside and outside air is formed on an upstream side, and a plurality of outlets 2 for respectively supplying suction air to a plurality of places in a vehicle compartment are formed on a downstream side. , A blower fan 5 disposed upstream of the casing 4, an evaporator 6 disposed downstream of the blower fan 5, and a downstream side of the evaporator 6. Heater 7 arranged in
And

[0003] The suction port 1 of the casing 4 comprises an outside air suction port 1a for introducing outside air and an inside air suction port 1b for introducing circulating air inside the cabin, and is provided between the outside air suction port 1a and the inside air suction port 1b. , Outside air suction port 1a or inside air suction port 1
An internal / external air switching damper 8 that opens one of the b and switches between external air and internal air is provided. The outlet 2 of the casing 4 has a defroster-side outlet 2a formed in the upper part of the casing 4 for blowing air to a front window or the like in the vehicle compartment to prevent fogging or the like, and a face side for blowing air from the front of the dashboard or the like. An outlet 2b and a foot-side outlet 2c formed in a lower portion of the casing 4 and connected to a duct 9 for supplying air from a lower portion of the vehicle compartment are provided. In general,
In a luxury car, the duct 9 branches on the way, and each branch duct communicates with the front and rear compartments to supply air to the respective compartments.

The defroster-side outlet 2a, face-side outlet 2b, and foot-side outlet 2c are provided with a defroster-side damper 10, a face-side damper 11, and a foot-side damper 12 for adjusting respective opening areas. . The blower fan 5 sucks inside and outside air from the outside air suction port 1a or the inside air suction port 1b and introduces the inside into the casing 4, and is connected to an electric motor (not shown).

[0005] The evaporator 6 is connected to a compressor (not shown) through a refrigerant pipe, and passes air introduced from the suction port 1 to cool the compressor when the compressor is operating.
Further, the heater 7 is connected to an engine (not shown) mounted on the vehicle by a hot water pipe, and the cooling water of the engine is circulated therein to make the passing air hot air.

Further, an air mix damper 13 pivotally supported by the casing 4 is provided in the vicinity of the upstream side of the heater 7 so as to be swingable, and the air mix damper 13 is provided on the upstream surface of the heater 7 depending on the swing position. From the state in which the flow of air into the heater 7 is stopped by completely covering the upper surface 7a.
Is fully opened, and the air can be adjusted to a state where it is guided to the heater 7.

Next, a method for blowing air into the passenger compartment in the above-described conventional vehicle air conditioner will be described. First, by driving the blower fan 5, outside air or inside air is introduced into the casing 4 from the outside air suction port 1a or the inside air suction port 1b, and is sent to the air flow path 3 downstream. The introduced air then passes between the fins of the evaporator 6 to exchange heat with the refrigerant flowing in the tubes of the evaporator 6 to be cooled, and is sent to the downstream heater 7 side.

At this time, when the air mix damper 13 is set to completely cover the upstream surface 7 a of the heater 7, the air does not pass through the heater 7 and the air flows above the air mix damper 13. It is guided to the road 3 and is blown. When the air mix damper 13 is set to a state in which the upstream surface 7a of the heater 7 is fully opened, the air passes between the fins of the heater 7 and flows through the tube of the heater 7 in a high temperature state. It exchanges heat with water and becomes hot air and is sent.

Further, when the air mix damper 13 is arranged at an intermediate position between these states, the air is blown separately to the upper side and the lower side of the air mix damper 13 and guided to the lower side. The heated air is a heater 7
As a result, warm air is generated, and the air guided upward is blown as cold air. When the cold air and the hot air merge at the downstream side of the air mix damper 13, the air becomes a mixed air having a temperature corresponding to the ratio of the two airs and is sent to the downstream side.

Therefore, the temperature of the air blown to the downstream side is adjusted by the swing position of the air mix damper 13. Thereafter, the cool air, the hot air, or the mixed air thereof is guided to each of the air outlets 2 in an open state and is blown out at predetermined positions in each part of the vehicle interior, thereby achieving air conditioning in the vehicle interior. Will be

For example, the mixed air is supplied to the defroster side outlet 2
When air is blown from the air mix damper 13a and the foot side outlet 2c (defroster / foot mode), the air mix damper 13 is swung to a predetermined intermediate position,
Is set to send cold air to the upper side and hot air to the lower side separately, and the defroster-side damper 12a and the foot-side damper 12c are swung so that the defroster-side outlet 2a and the foot-side outlet 2c Is in an open state. At this time, the other air outlets are closed by the respective dampers, so that the cool air and the hot air separated by the air mix damper 13 are selectively mixed as air, and are selectively supplied to the defroster side air outlets 2.
a and the foot-side outlet 2c.

[0012]

However, the above-mentioned conventional vehicle air conditioners have the following problems. That is, since the air flow rate in each branch duct of the duct 9 connected to the foot-side outlet 2c is set by the pressure loss in each branch duct, the ratio of each air flow rate in each branch duct cannot be changed. In addition, the overall air flow is reduced, and the amount of power required to drive the blower fan 5 is large. As a result, the running cost increases. Further, in order to supply air to either the front side compartment or the rear side compartment, it is necessary to replace the entire duct 9, and it is very difficult to replace the duct 9. It is almost impossible to supply air to one side.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and individually changes the amount of air blown from the front foot side outlet and the rear foot side outlet without pressure loss. It is an object of the present invention to provide a vehicle air conditioner that is capable of easily setting each mode for supplying air to both or mainly one of a front-side compartment and a rear-side compartment.

[0014]

According to the present invention, there is provided an air conditioner for a vehicle, comprising: an air inlet provided on an upstream side; A plurality of air outlets for supplying air to the front side air outlets for guiding air to the front foot side air outlets and the rear foot side air outlets among the air outlets. A flow path is formed,
Further, a partition is formed to divide the foot-side air passage into a front air passage and a rear air passage corresponding to the front foot-side outlet and the rear foot-side outlet. It is assumed that.

A cover for covering the foot-side air flow path is detachably provided on the casing, and the partition is formed on an inner surface of the cover. Here, a face side outlet, the front foot side outlet, and an inner wall communication port are formed in an upper wall, a side wall, and an inner wall of the casing, respectively, and an upper end of the inner wall of the casing and the upper end are connected to each other. A foot-side flow port disposed below the face-side outlet is formed between the wall-side end and a communication-port-side damper for opening and closing the inner-wall communication port. A face-side damper for opening and closing the foot-side communication port at the same time as opening and closing of the face-side outlet, and further, the cover portion constitutes a front wall portion of the casing and is provided between the front wall portion and the inner wall portion. The foot-side air passage is formed at the rear, and the rear foot-side outlet is provided.

According to the first aspect of the present invention, the foot-side air flow path in the casing is divided into a front air flow path and a rear air flow path by a partition, and the front air flow is determined by the interval between the partitions. By setting the flow path cross-sectional areas of the air flow path and the rear air flow path, the amount of air blown from the front foot-side outlet and the rear foot-side outlet can be set without the conventional pressure loss. . In claim 2, by replacing the detachable cover part with one having a different interval between adjacent partition parts, the flow path cross-sectional areas of the front air flow path and the rear air flow path are changed, The amount of air blown from the front foot outlet for the front and the rear foot outlet for the rear can be adjusted. According to the third aspect, particularly when it is desired to supply a large amount of air from the rear foot side outlet to the rear side compartment, the foot side communication port is closed by the face side damper, and the inner wall communication port is closed by the communication port side damper. open. Thus, the air flowing into the foot-side air flow path from the inner wall communication port can be mainly guided to the rear air flow path. By using a cover that does not have a rear foot-side outlet and a plurality of partitions, air can be supplied only from the front foot-side outlet to the front-side cabin, and the amount of air blown by the face-side damper. It can be adjusted by changing the opening of the foot side communication port.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a vehicle air conditioner according to the present invention will be described with reference to the drawings. 1 is a perspective view showing a side portion of an embodiment of a vehicle air conditioner according to the present invention, FIG. 2 is a left side view of FIG. 1 (rear view of a main part), and FIG. 3 is a vehicle air conditioner according to the present invention. FIG. 4 to FIG. 6 are sectional views of a vehicle air conditioner according to an embodiment of the present invention, showing a defroster mode, a defroster / foot mode, and a foot mode, respectively. ing. In these figures, reference numeral 21 denotes a casing,
22 denotes an evaporator and 23 denotes a heater.

As shown in FIGS. 1 to 4, the vehicle air conditioner of this embodiment comprises a casing upstream portion 21A disposed on the upstream side and a casing downstream portion 21B disposed on the downstream side. A casing 21 as shown in FIG. 7 and an evaporator 22 installed in a casing upstream portion 21A
And the casing downstream portion 21B, that is, the evaporator 2
2 and a heater 23 installed on the downstream side.

An inlet 24 is formed in the casing upstream portion 21A for introducing air taken in by a blower fan (not shown) in the same manner as in the prior art, and an evaporator 22 is provided in the inlet 24. It is erected. In the casing downstream portion 21B, a heater 23 is disposed in an inclined state at a lower portion on the evaporator 22 side, and a plurality of heaters 23 for supplying air introduced from the inlet 24 through the evaporator 22 to a plurality of locations in the vehicle compartment. An outlet 25 is formed.

The inlet 2 of the casing upstream part 21A
4 is connected to a blower-side casing (not shown) in which an outside air suction port (not shown) and an inside air suction port (not shown) are formed and a blower fan (not shown) is installed, as in the prior art. The inside and outside air sucked by the blower fan is
It is set to pump to Also, casing 2
1 is a casing upstream section 21A and a casing downstream section 21A.
B and can be divided and are individually molded.

An upper opening 26 and a lower opening 27 are vertically formed in the casing upstream portion 21A at a connection portion with the casing downstream portion 21B, and a rotation is provided between the upper opening 26 and the lower opening 27. An air mix damper 28, which is pivotally supported by a shaft 28a, is provided. The air mix damper 28 is set so as to close the lower opening 27 when completely swung downward, and to close the upper opening 26 when completely swung upward.

The casing downstream part 21B is, in particular,
As shown in the figure, an upper wall portion 21a provided on the upper portion, two side wall portions 21b provided on both sides, an inner wall portion 21c formed between the both side wall portions 21b, and a lower wall portion provided on the lower portion 21d
And a cover portion 29 (see FIGS. 9 and 10) that covers the interior side of the vehicle compartment side of the inner wall portion 21c at intervals and forms a foot-side air flow path F between the inner wall portion 21c and the side wall portion 21b. ing. The upper wall portion 21a, the side wall portion 21b, and the inner wall portion 21c are integrally formed, and the cover portion 29 is separately formed therefrom and is exchangeably combined. The cover portion 29 constitutes a front wall portion of the casing 21 and includes a plurality of hooks 29d, 29d.
e (see FIGS. 1, 3 and 10), the side wall 21
b and the upper wall portion 21a.

The upper wall 21a has a defroster-side outlet 25a disposed on the upper side of the upper opening 26 on the downstream side and above the heater 23, and a face disposed on the vehicle compartment side from the defroster-side outlet 25a. A side outlet 25b is formed. That is, when the upper opening 26 is opened by the air mix damper 28, warm air is blown from the side of the defroster side outlet 25 a in the upper part of the casing 21 to the defroster side outlet 25 a and the face side outlet. A cool air passage C to be sent to 25b is formed so as to be connected to the evaporator 22.

The inner wall portion 21c is provided with a lower wall portion 21d.
And a warm air flow path H that sends warm air from the heater 23 in the lower portion of the casing 21 to the defroster side outlet 25a from below, between the inner wall portion 21c and the heater 23. Are formed so as to be connected to the heater 23. A face-side outlet 25 is provided between the upper end of the inner wall 21c and the end of the upper wall 21a on the passenger compartment side.
A foot-side flow port 30 arranged below b is formed. Further, two inner wall communication ports 31 penetrating both sides of the inner wall portion 21c and communicating with the foot-side air flow path F are formed in the upper part of the inner wall portion 21c in this example.

Further, the upper portion of the inner wall portion 21c and the heater 23
On the side, a hot air guide cylinder U extending vertically is provided at a plurality of intervals. The hot air guide tube portion U has a function of flowing the hot air from the heater 23 from the lower end opening to the upper end opening and guiding the hot air from the heater 23 upward as a part of the hot air flow path H. This is for partially guiding the warm air to the side outlet 25a and the face side outlet 25b.

On the side wall 21b, a front foot-side outlet 25c connected to a duct that blows out from the bottom of the front seat in the vehicle interior is formed closer to the vehicle interior than the inner wall 21c. The cover portion 29 has a rear foot-side outlet 25d connected to a duct that blows out from the rear seat-side bottom of the vehicle compartment.
Are formed in a protruding state at the lower part.

Further, a plurality of (three in this example) plate-like partitioning portions 29a projecting from the upper portion to the lower portion toward the inner wall portion 21c are formed on the inner surface of the cover portion 29. These partitions 29a divide the foot-side air flow path F into a plurality of front air flow paths F1 and rear air flow paths F2 corresponding to the front foot-side air outlets 25c and the rear foot-side air outlets 25d. And for individually guiding air to these outlets. The inner wall communication port 31 is located between two adjacent partitioning portions 29a (see FIG. 9). Further, as shown in FIG. 10, concave portions 29b and 29c into which rotating shafts 36a and 37a described later are fitted are formed at the free ends of the respective partition portions 29a.

The defroster-side outlet 25a is provided with a defroster-side damper 32 and a sub-damper 33 whose opening areas can be separately adjusted. The defroster-side damper 32 is swingable up and down around a rotation shaft 32a disposed downstream of the sub-damper 33 and axially supported on the upstream side of the opening edge of the defroster-side outlet 25a. The opening area of the outlet 25a is adjusted.

In particular, when the defroster-side damper 32 is completely swung upward, the defroster-side air outlet 25a is closed, and is completely swung downward, that is, when the defroster-side air outlet 25a is inwardly moved into the casing downstream portion 21B. When in contact with the protruding stopper portion 34, the defroster-side outlet 25a is opened.

Therefore, the defroster side damper 32 is
It has a function of projecting inward of the casing downstream portion 21B in the open state to block the cool air passage C, guide the cool air flowing through the cool air passage C downward, and change its course.

The sub damper 33 is rotatably disposed about a rotation shaft 33a crossing the defroster-side outlet 25a. When the defroster-side damper 32 is in the closed position, the sub-damper 33 is connected to the opening surface of the defroster-side outlet 25a. The defroster-side damper 32 is set to be substantially parallel and rotates only when the defroster-side damper 32 is in the open position. That is, the sub damper 33 functions as an auxiliary damper for the defroster-side damper 32.

The sub-damper 33 is set to have an area where a predetermined gap is formed without completely closing the defroster-side outlet 25a even in a state substantially parallel to the opening surface of the defroster-side outlet 25a. Therefore, when the defroster-side damper 32 is in the open state, even if the sub-damper 33 is in the parallel state, a predetermined amount of air is blown from the defroster-side outlet 25a through the gap.

The face-side outlet 25b is provided with a face-side damper 35 whose opening area can be adjusted. The face-side damper 35 is connected to the face-side outlet 2
5b is swingable up and down around a rotation shaft 35a pivotally supported on the downstream side of the opening edge, and the opening area of the face side outlet 25b is adjusted by the swinging position.

In particular, when the face-side damper 35 is completely swung upward, the face-side outlet 25b is closed, and the face-side outlet 25b is completely swung downward, that is, the opening edge of the foot-side flow opening 30. , The face-side outlet 25b is opened. Therefore, the face-side damper 35 can open and close the foot-side circulation port 30 simultaneously with the opening and closing of the face-side outlet 25b, and can adjust the opening area of the foot-side circulation port 30.

The inner wall communication port 31 is provided with a communication port side damper 36 whose opening area can be adjusted. The communication port side damper 36 can swing up and down around a rotation shaft 36 a pivotally supported at the upper end of the opening edge on the cover portion 29 side of the inner wall communication port 31, and depending on the swing position, the inner wall communication port 3.
1 is adjusted. In particular, in a state where the inner wall communication port 31 is completely swung upward, the foot side air flow path F protrudes inward to reduce the flow path cross-sectional area, and the inner wall communication port 31 is opened, so that the inner wall communication port 31 is completely downward. Rocked,
In other words, in a state in which it comes into contact with the opening edge of the inner wall communication port 31,
The inner wall communication port 31 is closed.

A foot-side damper 37 capable of adjusting the cross-sectional area of the foot-side air flow path F is provided at an intermediate portion of the inner wall portion 21c. The foot-side damper 37 is provided on the inner wall 21.
c can be swung up and down around a rotation shaft 37a pivotally supported above the front foot-side air outlet 25c on the cover portion 29 side of the cover c. Is adjusted. In particular, foot side damper 3
7 is completely swung upward, that is, the inner wall 21
c, the foot-side air flow path F has the largest flow path cross-sectional area, and in the state of completely swinging downward, that is, in the state of contact with the cover portion 29, the foot-side air flow path F Is almost obstructed.

On one side of the casing upstream portion 21A, refrigerant pipes 22a, 22a of the accommodated evaporator 22 are provided.
A pipe insertion hole 39A through which the second member 2b is inserted is formed. These refrigerant pipes 22a and 22b are connected to the evaporator 22.
Are connected to a refrigerant inlet and a refrigerant outlet (both are not shown) provided on one side end surface. A heater support hole 39B into which the heater 23 is inserted and supported is formed in one of the side wall portions 21b. And
As shown in FIG. 8, one side surface of the casing upstream portion 21A covers the pipe insertion hole 39A and the heater support hole 39B.
A side cover 40 as shown in FIG. The side cover 40 is mounted on the casing upstream portion 21A by, for example, screws (not shown) at the plurality of mounting portions 42.
The refrigerant pipes 22a, 22
2b to the evaporator 22 and hot water piping 23a,
This is to cover and protect the connection portion of the heater 23b to the heater 23.

As shown in FIG. 2, two pairs of semicircular recesses 41a and 41b and a pair of expansion valve recesses facing each other are provided on one side surface and the side cover 40 of the casing upstream portion 21A. 41c is formed. A pair of recesses 4
1c forms a rectangular recess for fitting the expansion valve 22c. The semicircular recesses 41a and 41b and the recess 41c for the expansion valve are
The hot water pipes 23a and 23b connected to the hot water inlet 23c and the hot water outlet 23d, respectively, and an expansion valve 22c connected to the evaporator 22 are formed as through holes.

The semicircular recesses 41a and 41b are set to have a radius corresponding to the diameter of the hot water pipes 23a and 23b so as to sandwich the hot water pipes 23a and 23b from both sides. The expansion valve 22c is set in a rectangular shape corresponding to the outer shape of the expansion valve 22c so as to sandwich the expansion valve 22c from both sides. That is, the semicircular concave portions 41a and 41b and the expansion valve concave portion 41c sandwich the hot water pipes 23a and 23b and the expansion valve 22c to form the hot water pipe 23a due to the flow of the cooling water (hot water) and the refrigerant and the vibration of the vehicle itself. ,
It serves to suppress vibration of the expansion valve 23b and the expansion valve 22c.

As described above, since the refrigerant pipes 22a and 22b and the hot water pipes 23a and 23b are fixed by the one side cover 40, the number of parts and man-hours for fixing are not increased. Also, the connection of the refrigerant pipes 22a and 22b to the evaporator 22 and the heater 23 of the hot water pipes 23a and 23b
Unnecessary force is not applied to the connection part by covering the connection part to the outside with the side cover 40 and protecting it from the outside. Thereby, the connection part of each piping 22a, 22b, 23a, 23b is not damaged. Further, the evaporator 22,
The air mix damper 28 and the heater 23 are previously integrated into a single casing, and the integrated unit can be easily mounted on a vehicle.

Next, the method of blowing air into the passenger compartment in the vehicle air conditioner according to one embodiment will be described with reference to FIGS. 4, 5 and 5 in the case of [defroster mode], [defroster / foot mode] and [foot mode]. This will be described with reference to FIG.

[Defroster Mode] When the mixed air is mainly blown out from the defroster side outlet 25a (defroster mode), as shown in FIG.
The air mix damper 28 is set at a predetermined swing position so that the cold air passing through the air mix damper 28 is separated from above and below the air mix damper 28, the defroster-side damper 32 and the sub damper 33 are opened, and the defroster-side outlet 25a is opened. Are set at the swing position and the rotation position, respectively.

The face side damper 35 and the communication port side damper 36 close the face side air outlet 25b and the inner wall communication port 31, respectively, and the foot side damper 37 is connected to the foot side air flow path F. The swing position is set so that the cross-sectional area is reduced and about 10% of the total air volume flows.

In this state, the cool air flowing above the air mix damper 28, that is, flowing through the cool air flow path C, is guided downward by the defroster-side damper 32 projecting inward, and then sent to the defroster-side outlet 25a. Can be On the other hand, the cool air flowing below the air mix damper 28 passes through the heater 23 to become warm air, and is guided upward from below the defroster side outlet 25a by the warm air flow path H along the inner wall 21c, and is directed upward. The cool air flowing through the cool air flow path C merges with the cool air to form mixed air and is blown out from the defroster side outlet 25a.

That is, since the defroster-side damper 32 can protrude into the casing 21 to a position where the defroster-side damper 32 blocks the flow of the cool air in the cool air flow path C toward the defroster-side outlet 25a in the open state, the defroster-side damper 32 is By setting it to the open state, the flow of the cool air is cut off or changed, and at the same time, the opening area is adjusted by the sub damper 33 to adjust the air volume from the defroster side outlet 25a. Therefore, it is possible to suppress the direct blowing from the defroster side outlet 25a by changing the air passage of the cool air.

Further, the casing 2 is attached to the evaporator 22.
1, a cool air flow path C for sending cool air to the defroster side air outlet 25a is connected,
A hot air flow path H for sending hot air from below to the defroster-side outlet 25a through the lower portion of the inside 1 is connected to the defroster-side damper 32, and the defroster-side damper 32 blocks the flow of cold air in its open state and protrudes downward. Therefore, when the defroster-side damper 32 is in the open state, the cold air is cut off or its course is changed by the defroster-side damper 32, and the warm air is defroster-side outlet 25a opened downward. , The warm air is preferentially sent to the defroster side outlet 25a.
Therefore, hot air is more easily blown out from the defroster side outlet 25a than cold air, and high-temperature mixed air is obtained.

[Defroster / Foot Mode] When the mixed air is blown out from the defroster side outlet 25a, front foot side outlet 25c and rear foot side outlet 25d (defroster / foot mode), as shown in FIG. In addition, the foot-side damper 37 is
Is different from the defroster mode in that it is set at the swing position that maximizes the cross-sectional area of the flow path.

That is, in the defroster mode, mixed air is mainly blown out from the defroster side outlet 25a, whereas in the defroster / foot mode, not only the defroster side outlet 25a but also the front foot side outlet 25a.
c and the rear foot-side outlet 25d are set so as to blow out a large amount of mixed air.

[Foot Mode] When the mixed air is mainly blown out from the front foot-side outlet 25c for front and the rear foot-side outlet 25d for rear (foot mode), FIG.
As shown in (5), the sub damper 33 is set at a rotational position where the defroster side outlet 25a is closed. That is, in the defroster / foot mode, a large amount of mixed air is blown out from the defroster side outlet 25a, the front foot side outlet 25c, and the rear foot side outlet 25d, whereas in the foot mode, Since the sub damper 33 suppresses the blowout from the defroster side blowout port 25a, the front foot side blowout port 25c is mainly used.
Also, a large amount of mixed air is blown out from the rear foot side outlet 25d.

However, as described above, even when the sub-damper 33 is in the closed state, the sub-damper 33 does not completely close the defroster-side outlet 25a, and is set to have a predetermined gap. Therefore, even in the foot mode, a small amount of internal air is blown out from the defroster side outlet 25a through the gap. Here, the plurality of partitions 29a form a front air flow path F1 and a rear air flow path F2, and the front air flow path F1 and the rear air flow path F2 are determined by an interval between adjacent partition parts 29a.
Is set, whereby the amount of air that passes through the front foot-side outlet 25c and the rear foot-side outlet 25d is set. Therefore, by replacing the detachable cover portion 29 with one having a different interval between the adjacent partition portions 29a, the front foot-side air outlet 2 is provided.
It is possible to adjust the amount of air passing through 5c and the rear foot-side outlet 25d.

When the air is supplied only to the front compartment, the cover 29 is replaced with a cover having no rear foot outlet or partition. As a result, air can be supplied only from the front foot side air outlet 25c to the front side compartment, and the amount of air blown can be adjusted by changing the opening of the foot side communication port 30 by the face side damper 35. .

[Face mode] Face side outlet 25
b in the face mode in which air is mainly blown out from the face side air outlet 25 by the face side damper 35.
b is fully opened and the foot-side flow port 30 is closed. here,
In particular, when a large amount of air is supplied from the rear foot-side outlet 25d to the rear-side cabin, the inner-wall communication port 31 is opened by the communication-port-side damper 36. Thereby, the foot-side air flow path from the inner-wall communication port 31 The air flowing into F is mainly led to the rear air flow path F2 between the partitions 29a.

[0053]

Since the present invention is configured as described above, it has the following effects. According to the first aspect of the present invention, the partitioning section divides the foot-side air flow path in the casing into a front air flow path and a rear air flow path. By appropriately setting the flow path cross-sectional area of the use air flow path, the amount of air blown from the front foot-side outlet and the rear foot-side outlet can be set without the conventional pressure loss. The required amount of power for driving the blower fan can be reduced, and as a result, the running cost is reduced.

According to the second aspect of the present invention, in addition to the above effects,
By replacing the removable cover part with one having a different interval between adjacent partition parts, the flow path cross-sectional area of the front air flow path and the rear air flow path is changed. The amount of air blown from the outlet and the rear foot side outlet can be easily adjusted.

According to the third aspect of the present invention, in addition to the above effects,
In particular, when it is desired to supply a large amount of air from the rear foot side outlet to the rear side compartment, the foot side communication port is closed by the face side damper and the inner wall communication port is opened by the communication port side damper. Thereby, the air flowing into the foot air flow path from the inner wall communication port can be mainly led to the rear air flow path. By using a cover that does not have a rear foot-side outlet and a plurality of partitions, air can be supplied only from the front foot-side outlet to the front-side cabin, and the amount of air blown by the face-side damper. It can be adjusted by changing the opening of the foot side communication port. As described above, by replacing the easily replaceable cover with a predetermined one or setting each damper at a predetermined position, the air passing through the front foot-side air outlet and the rear foot-side air outlet is respectively passed. The air volume can be individually changed, and each mode for supplying air to both or mainly one of the front and rear compartments can be easily set.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a side portion of an embodiment of a vehicle air conditioner according to the present invention.

FIG. 2 is a left side view (main part rear view) of FIG.

FIG. 3 is an exploded perspective view showing one embodiment of a vehicle air conditioner according to the present invention.

FIG. 4 is a sectional view showing a defroster mode in one embodiment of the vehicle air conditioner according to the present invention.

FIG. 5 is a cross-sectional view showing a defroster / foot mode in an embodiment of the vehicle air conditioner according to the present invention.

FIG. 6 is a sectional view showing a foot mode in one embodiment of the vehicle air conditioner according to the present invention.

FIG. 7 is a front view of a casing.

FIGS. 8A and 8B are a front view and a side view of a side cover (cover member), respectively.

FIG. 9 is a front view of a cover unit.

FIG. 10 is a side view of a cover part.

FIG. 11 is a sectional view showing a conventional example of a vehicle air conditioner according to the present invention.

[Explanation of symbols]

 13 Air Mix Damper 21 Casing 21a Upper Wall 21b Side Wall 21A Casing Upstream 21B Casing Downstream 23 Heater 24 Inlet 25 Outlet 25a Defroster Side Outlet 25b Face Side Outlet 25c Front Foot Side Outlet 25d Rear Foot Side outlet 29 Cover part 29a Partition part 30 Foot side communication port 31 Inner wall communication port 32 Defroster side damper 33 Sub damper 35 Face side damper 36 Communication port side damper F Foot side air flow path F1 Front air flow path F2 Rear air flow Road C Cold air flow path H Hot air flow path

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Masao Sawada 3-chome, Asahicho, Nishi-Biwajima-cho, Nishi-Kasugai-gun, Aichi Prefecture Inside the Air Conditioning Works of Mitsubishi Heavy Industries, Ltd. 3-chome, Asahicho 1 Air Conditioning Works of Mitsubishi Heavy Industries, Ltd.

Claims (3)

[Claims] A casing provided with an air inlet provided on an upstream side and a plurality of air outlets for supplying air from the air inlet to a plurality of locations in a vehicle interior, respectively; Inside, a foot-side air flow path for guiding air to the front foot-side air outlet and the rear foot-side air outlet of each of the air outlets is formed, and the foot-side air flow path is connected to the front foot-side air outlet. An air conditioner for a vehicle, wherein a partition portion for dividing into a front air flow path and a rear air flow path is formed corresponding to the outlet and the rear foot side air outlet. 2. The vehicle air conditioner according to claim 1, wherein a cover portion for covering the foot-side air flow path is detachably provided on the casing, and the partition portion is formed on an inner surface of the cover portion. An air conditioner for a vehicle, wherein the air conditioner is used. 3. The air conditioner for a vehicle according to claim 2, wherein an upper side wall, a side wall, and an inner wall of the casing are provided with a face side air outlet, the front foot side air outlet, and an inner wall communication port, respectively. A foot-side flow port disposed below the face-side air outlet is formed between an upper end of an inner wall of the casing and a cabin-side end of the upper wall. A communication port side damper for opening and closing the inner wall communication port, and a face side damper for opening and closing the foot side communication port at the same time as opening and closing of the face side air outlet, further comprising the casing An air conditioner for a vehicle, comprising: a front wall portion of the vehicle; a foot-side air passage formed between the front wall portion and the inner wall portion; and the rear foot-side air outlet.