JPH10236134A - Air conditioning device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the body size of an air conditioning device for a vehicle by devising the formation position of a heated air guide passage. SOLUTION: In an air conditioning case, a seal wall 9 having a seal surface 9a to which one end surface of an air mix door is applied in the maximum heating condition is formed. On the downstream side of the seal wall 9, that is on the opposite side of the seal surface 9a, a heated air guide passage 11 for a defroster composed of the seal wall 9 and a heated air guide part 12 is formed. Since almost no cold air flows to the opposite side of the seal wall 9, this space is effectively used for forming the heated air guide passage 11 for the defroster. The body size of an air conditioning device for a vehicle can thus be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to temperature control of an air conditioner for a vehicle, and more particularly to temperature control in a blowing mode in which conditioned air is blown from both an upper portion and a lower portion in a vehicle compartment. It is.

[0002]

2. Description of the Related Art A conventional vehicle air conditioner is disclosed in
There is one described in No. 114507. In this conventional device, in a blowing mode (foot mode, foot differential mode) in which conditioned air is blown out from both the foot outlet and the defroster outlet, the temperature of the conditioned air blown out from the foot outlet is higher than that from the defroster outlet. I am trying to do it. Specifically, in the conventional apparatus, the cold air flowing through the cold air passage and the hot air flowing through the hot air passage are mixed in the air mix chamber. A defroster outlet is provided at a side portion, and a foot outlet is provided at a portion downstream of the hot air passage.

[0003] In addition to the above, in the above-mentioned conventional apparatus,
A dedicated hot air guide passage is provided for increasing the temperature of the conditioned air blown out from the defroster outlet so as not to be too cold and improving the effect of preventing fogging of the vehicle window glass.

[0004]

However, in the above-mentioned conventional apparatus, the hot air guide passage is separately formed so as to protrude outside the air conditioning unit. Therefore, in the above-mentioned conventional device, there is a problem that the physique of the vehicle air conditioner is increased by the warm air guide passage. Therefore, an object of the present invention is to reduce the physique of a vehicle air conditioner by devising a formation position of a hot air guide passage.

[0005]

Means for Solving the Problems The present inventors have formed the hot air guide passages at various positions in the vehicle air conditioner as a result of solving the above problems, and have found the following. In a general vehicle air conditioner, a cool air passage through which cool air flows and a warm air passage through which warm air flows are provided in an air conditioning case, and the air flow rate of these passages is controlled by a temperature adjusting door (generally referred to as an air mix door). The temperature of the conditioned air is adjusted by adjusting in ()).
And in the air conditioning case, on the downstream side of the temperature adjustment door,
A seal wall is formed so as to protrude from the inner wall. In the maximum heating state in which all the air flowing in the air-conditioning case is sent to the hot air passage, the seal wall is in contact with the temperature adjusting door to prevent the cool air from leaking from the cool air passage.

[0006] The seal wall is generally formed in a frame shape, whereby an outlet opening serving as an outlet of the cool air passage is formed so as to be surrounded by the seal wall, and flows through the cool air passage. The cold air is blown out from the blowout opening. Then, as a result of studying the flow of the cool air by the present inventor, the cool air is blown out from the blowout opening, and hardly flows near the downstream side of the seal wall, in other words, near the side portion of the blowout opening. It turns out that this space is hardly used.

Therefore, in the present invention, by forming a hot air guide passage for guiding hot air in a space near the downstream side of the seal wall, the temperature of the conditioned air blown from the defroster outlet can be easily increased. The idea was that the physique of a vehicle air conditioner could be made compact. Further, such a concept can be applied to a blow mode in which the temperature of the conditioned air blown from the two blow outlets is different, that is, a bi-level mode regardless of the foot mode and the foot differential mode.

[0008] Based on the above-mentioned idea, in the inventions according to the first to twelfth aspects, the cold air passage (6) and the temperature control doors (8, 20, 2) are provided in the air conditioning cases (2a, 2b).
A seal wall (9, 9d) is formed on the downstream side of 1) so as to protrude inward of the air conditioning case (2a, 2b), and the seal wall (9, 9d) is formed by a cold air passage. The outlet openings (20, 20a) constituting the outlet of (6) are formed, and the temperature control doors (8, 20) allow all the conditioned air in the air conditioning cases (2a, 2b) to pass through the hot air passage (7). At the time of the maximum heating to blow air, the air-conditioning doors (8, 20, 21) are brought into contact with each other to close the blow-out opening (50). Passage (7)
A hot air guide passage (11) for guiding warm air from the air to the upper air passage (13) is provided.

[0009] Thus, as described above, the temperature of the conditioned air blown out from the upper air passage can be easily increased by effectively utilizing the space near the downstream side of the seal wall and providing the hot air guide passage. In addition, the size of the vehicle air conditioner can be reduced. According to the first aspect of the present invention, the following other operational effects are obtained.

In the conventional apparatus, the hot air guide passage for guiding the hot air to the lower air passage according to the present invention is formed by attaching a separate case member to the outside of the air conditioning case. Therefore, in the conventional hot air guide passage, the air-conditioning case and the case member are fitted into the concave and convex with high precision so that the hot air does not leak out. As a result, there is a problem that the shapes of the air-conditioning case and the case member are complicated.

However, according to the first aspect of the present invention, since the hot air guide passage is formed inside the air conditioning case, the hot air can be easily supplied to the outside of the air conditioning case without complicating the shape of the air conditioning case. Can be prevented from leaking. In particular, in the invention according to claim 3, the temperature control door (20, 21)
Consists of a first temperature control door (20) for adjusting the amount of cold air flowing through the cold air passage (6) and a second temperature adjusting door (21) for adjusting the amount of hot air flowing through the hot air passage (7). The wind guide passage (11) is characterized in that it is formed near the downstream side of the seal wall (9d) that comes into contact with the first temperature control door (20).

Thus, in addition to the functions and effects described in the first aspect, even if the interval between the cooling heat exchanger and the heating heat exchanger is reduced, the first temperature control door and the second temperature control door are provided. Thus, the temperature of the conditioned air can be adjusted. As a result, the physique of the vehicle air conditioner can be further reduced. According to the fourth aspect of the invention, on the downstream side of the hot air guide passage (11), the warm air flowing through the warm air guide passage (11) and the cool air from the cool air passage (6) are mixed. A mixing member (9, 84) is provided.

[0013] This allows the mixing member to mix the warm air flowing through the warm air guide passage and the cool air from the cool air passage satisfactorily. As a result, the temperature of the conditioned air flowing through the upper air passage can be made uniform. According to the ninth aspect, the air-conditioning cases (2a, 2b) cooperate with the sealing walls (9, 9d) to supply the warm air from the warm air passage (7) to the upper air passage (13). ) Is formed, and a hot air guide portion (12) for guiding the air is formed.

Thus, the warm air can be guided to the upper air passage by the warm air guide portion. Also,
In particular, in the invention according to claim 10, the hot air guide passage (11)
Are characterized in that they are formed separately from the cold air passage (6) and the hot air passage (7). Thereby, the warm air guided by the warm air guide passage can reliably send the warm air to the upper air passage without mixing with the cool air and the warm air flowing through the cool air passage and the warm air passage. .

Further, in the invention according to the eleventh aspect, a baffle plate portion (26a) for blocking the flow of the cool air flowing through the cool air passage (6) is formed downstream of the hot air guide portion (12). It is characterized by having. Thereby, the flow of the cool air is obstructed by the baffle plate portion, so that the temperature of the conditioned air sent to the upper air passage can be further increased.
Further, by changing the shape of the baffle plate, the temperature of the conditioned air sent to the upper air passage can be easily adjusted.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) FIG. 1 shows an overall configuration diagram of an air conditioner 1 for a vehicle. FIG. 2 is a sectional view taken along the line CC in FIG. FIG. 3 shows a schematic diagram of how the cool air and the hot air flow in the present embodiment.
The directions shown in FIGS. 1 and 2 are in a state where the vehicle air conditioner 1 is mounted on a vehicle.

As shown in FIG. 1, the vehicle air conditioner 1 comprises an inside / outside air blower unit (not shown) and an air conditioner unit 2 for accommodating an air conditioner heat exchanger to be described later. The inside / outside air blowing unit is for selectively blowing inside air or outside air into the air conditioner unit 2. The inside / outside air blowing unit is provided with an inside air introduction port, an outside air introduction port, and an inside / outside air switching door for selectively switching these introduction ports. Further, a blower for blowing inside air or outside air to the air conditioner unit 2 from the inside air introduction port or the outside air introduction port is provided in the inside / outside air blowing unit.

The air conditioner unit 2 is mounted in the vehicle width direction (FIG. 1).
It is arranged at the center of the front and back sides of the paper (in the front and back sides of the paper), and is arranged so as to be aligned with the inside and outside air blowing units in the vehicle width direction. The two air conditioning units 2
The passages a and 2b are assembled by fastening means such as claw fitting or C-shaped clips to form a flow path into the vehicle interior. (See FIG. 2).

In this embodiment, the two air-conditioning cases 2a and 2b are assembled in the vehicle width direction, and the two cases are formed so that the division surface (joining surface) thereof is directed to the vertical direction in the drawing. ing. The hatched portion in FIG. 1 is actually a dividing surface, and hatching is unnecessary. However, hatching is provided to make it easier to understand a characteristic portion of the present invention described later. Also,
The air conditioner unit 2 is referred to as an air conditioner case 2.

The air-conditioning case 2 is provided with an air intake 5 for taking in the air blown from the inside / outside air blowing unit. In the air-conditioning case 2, an evaporator 3 (cooling heat exchanger) for cooling the air taken in from the air inlet 5 and a heater core 4 (heating heat exchanger) for heating the passing air are provided in the vehicle front-rear direction. Are arranged in a row.

An inside / outside air blowing unit 1 (not shown)
The air is blown from the front of the vehicle to the rear of the vehicle in the order of the evaporator 3 and the heater core 4. The blown air generated by the blower in the inside / outside air blower unit flows in the width direction of the vehicle, then changes its direction in the air conditioning case 2 through the air inlet 5, and flows from the front to the rear of the vehicle.

The evaporator 3 is one component of a well-known refrigeration cycle apparatus, and the details are omitted here. Also, the heater core 4 uses the engine cooling water as a heat source and is well known, and thus the description is omitted here. As shown in FIG. 1, the heater core 4 is disposed in a part of a flow path on the downstream side of the evaporator 3 in the air conditioning case 2. As a result, in the air conditioning case 2, a cool air passage 6 is formed in which the cool air cooled by the evaporator 3 bypasses the heater core 4, and the heater core 4
A hot air passage 7 is formed on the downstream side. Further, an air mix chamber section 100 which is a mixing space for mixing cold air and hot air is provided downstream of the cold air passage 6 and the hot air passage 7.

The cold air passage 6 and the hot air passage 7 are formed so as to be arranged in the vertical direction. Since the heater core 4 is disposed at a lower portion in the air conditioning case 2, the cold air passage 6 is It is located above the passage 7. The cool air passage 6 is formed so as to extend from the front of the vehicle toward the rear of the vehicle. On the other hand, the hot air passage 7
As shown in FIG. 1, it is formed to extend upward and be curved toward a downstream side of a seal wall 9 described later. As a result, the cold air flowing through the cold air passage 6 and the hot air flowing through the hot air passage 7 collide and mix at right angles.

In the present embodiment, the temperature of the conditioned air is adjusted by adjusting the air flow rate ratio between the cold air flowing through the cold air passage 6 and the warm air flowing through the hot air passage 7 with the air flow rate adjusting door. It has become. Specifically, as shown in FIG. 1, an air mix door 8 which is disposed downstream of the evaporator 3 and upstream of the heater core 4 and is a temperature adjusting door is disposed. And this air mix door 8
The ratio of the warm air and the cool air mixed in the air mix chamber unit 100 is adjusted, and the temperature of the conditioned air is adjusted to a desired temperature.

The air mix door 8 is formed in a plate shape as shown in FIGS. 1 and 3, and has a rotating shaft 8a at one end. The rotating shaft 8a is rotatably supported by the air conditioning case 2. The air mix door 8 is arranged such that the axial direction of the rotation shaft 8a is the front and back direction of the paper surface in FIG. 1 (the vehicle width direction). Thereby, the air mix door 8 is rotatable in a range indicated by an arrow A in FIG. The air mix door 8 is
It is configured to be driven by a servo motor (not shown) as driving means connected to the rotating shaft 8a.

A seal wall 9 having a seal surface 9a which is in contact with one end face of the air mix door 8 is formed downstream of the cool air passage 6 and the air mix door 8. The seal wall 9 is integrally formed so as to protrude from the inner surface of the air conditioning case 2. Further, this seal wall 9 has
When the two air-conditioning cases 2a and 2b are assembled, the air-conditioning cases 2a and 2b are formed in a rectangular frame shape when viewed from the direction B in FIG. 1 (see FIG. 3).

As a result, as shown in FIGS. 1 to 3, a blow-out opening 50 forming an outlet of the cool air passage 6 is formed so as to be surrounded by the seal wall 9. In addition, the seal wall 9 is formed at a rotation position indicated by a in the figure where the air mix door 8 is located at one end side in a rotation range indicated by A in FIG. That is, the seal wall 9 is for preventing the cool air from leaking from the cool air passage 6 in the maximum heating state in which all the air that has passed through the evaporator 3 passes through the heater core 4. Specifically, the sealing surface 9a of the sealing wall 9
And one end surface of the air mix door 8 is in contact with the air mixing door 8 to reliably close the blow-out opening 50. Normally, packing or the like as a sealing material is attached to the plate surface of the air mix door 9.

The air mixing door 8 is located at one end of the rotation range indicated by A in the drawing, and at the rotation position indicated by b in the drawing, the seal wall 1 abutting on the other end surface of the air mixing door 8 is located.
0 is formed integrally with the air conditioning case 2. Seal wall 10
Means that all the air passing through the evaporator 3 is the heater core 4
In the maximum cooling state in which the hot air is bypassed, the cold air in the cold air passage 6 is in contact with one end surface of the air mixing door 8 so as to prevent the cool air from leaking to the heater core 4 to reliably shut off the inlet of the hot air passage 7. It is. The seal wall 10 has the same shape as the seal wall 9.

In this embodiment, as shown in FIG. 2, near the downstream side of the seal wall 9, the air mixing door 8 is provided.
A defroster hot air guide passage 11 for blowing hot air from the hot air passage 7 to a defroster air passage 13 to be described later is formed at a position opposite to the seal surface 9a in contact with the defroster.
As shown in FIG. 1, the defroster hot air guide passage 11 has a flow passage formed along the seal wall 9 so as to extend from the rear of the vehicle to the front of the vehicle. Hot air guide passage 1 for defroster
A flow path 1 is formed to extend in a direction (from the back side to the front side) perpendicular to the flow direction of the cool air flowing through the cool air passage 7 indicated by an arrow in FIG.

In this embodiment, as shown in FIG. 2, two defroster air passages 11 are provided, and the air passages 11 for the defroster are provided in the direction of the flow of the cool air flowing through the cool air passage 6 and the flow of the warm air flowing through the hot air passage 7. The air mixing door 8 is provided at both ends in the axial direction (vehicle width direction) of the rotating shaft 8a of the air mixing door 8, respectively. As shown in FIG. 2, the defroster hot air guide passage 11 causes the air conditioning cases 2 a and 2 b to bulge outward (in the vehicle width direction) with respect to the cold air passage 6 which is the air upstream passage of the seal wall 9. It is formed. In addition to the seal wall 9 and the air-conditioning cases 2a and 2b formed so as to expand in the vehicle width direction, the defroster hot air guide passage 11 has a predetermined distance from the seal wall 9 on the downstream side of the seal wall 9. And a hot air guide section 12 formed by opening. The hot air guide section 12 includes the air conditioning case 2
Are integrally formed.

The hot air guide portion 12 is formed so as to protrude from the inner surface of the air conditioning case 2 in the vehicle width direction in FIG. The distal end of the hot air guide portion 12 in the protruding direction is formed so as to coincide with the distal end of the seal wall 9 in the vehicle width direction (the flow direction of the cool air in the drawing) as shown in FIG. I have. The reason for this is to prevent the flow of the cool air from being reduced without obstructing the flow of the cool air that has passed through the cool air passage 6 by the warm air guide portion 12. Also, this hot air guide unit 1
2 is formed so as to extend parallel to the seal wall 9 and toward the defroster air passage 13 as shown in FIGS.

On the downstream side of the cold air passage 6 and the hot air passage 7, air passages 13 to 15 communicating with the respective air outlets installed in the vehicle interior are formed. Specifically, a defroster air passage 13 for blowing conditioned air toward the inner surface of a windshield (not shown) of the vehicle, and a face air passage 14 for blowing conditioned air toward the upper body of the front passenger. And a foot air passage 15 for blowing conditioned air toward the feet of front and rear passengers.

Here, the defroster air passage 13 is for blowing conditioned air from an upper part in the vehicle cabin near the vehicle windshield. Further, the face air passage 14 is for blowing out conditioned air from an upper portion in the vehicle interior. Further, the foot air passage 15 is for blowing out conditioned air from a lower part in the vehicle interior.

The air passages 13 to 15 are arranged in order from the rear side of the vehicle to the front side of the vehicle as shown in FIG.
4. The foot air passages 15 are arranged in this order. The foot air passage 15 is formed so that conditioned air flows downward from above, and a front seat foot outlet 16 for blowing the conditioned air to the feet of the front occupant is formed. In the foot air passage 15, a rear-seat foot outlet 17 for blowing conditioned air to the feet of a rear-seat occupant is formed downstream of the front-seat foot outlet 16.

The opening and closing of the air passages 13 to 15 are switched by the blowout switching doors 18 and 19. The following five blowing modes can be switched by these blowing switching doors 18 and 19. Hereinafter, the operation of the outlet switching doors 18, 19 in the above five outlet modes,
And how to flow the conditioned air.

Face Mode In the face mode, the blow-out switching door 19 is set to the rotating position shown in FIG. 1D, the face air passage 14 is fully opened, and the foot air passage 15 is closed. In addition, the blow-out switching door 18 is set to the rotation position shown by e in FIG. 1, and the defroster air passage 13 is closed. As a result, the conditioned air whose temperature has been adjusted by the air mix door 8 flows only through the face air passage 14.

The bi-level mode is a mode in which warm air is blown to the feet of the occupant and cold air is blown to the upper body of the occupant in the middle period such as spring and autumn, so that the occupant feels comfortable in the head and feet. . That is, a difference in temperature between the conditioned air flowing through the face air passage 14 and the conditioned air flowing through the foot air passage 15 is provided, and cool air is blown through the face air passage 14 and warm air is blown through the foot air passage 15. This is a blowing mode.

In the bi-level mode, the air outlet switching door 19
Is set to an intermediate rotation position indicated by f in FIG. 1 so that both the face air passage 14 and the foot air passage 15 are opened. Further, the blow-out switching door 18 is set to a rotation position shown by e in FIG. 1 to close the defroster air passage 13. As a result, the conditioned air that has been temperature-controlled by the air mix door 8 is divided into approximately half of the air passage 14 for the face and one for the air passage 1 for the foot.
5 will be blown.

Foot Mode In the foot mode, the air outlet switching door 19 is set to the rotation position shown by g in FIG. 1 to close the face air passage 14 and fully open the foot air passage 15. Also, the air outlet switching door 18 is set at the intermediate rotation position shown by h in FIG. 1 so that the air inlet of the defroster air passage 10 is slightly opened.

As a result, most (about 90%) of the conditioned air whose temperature is controlled by the air mix door 8 is sent to the foot air passage 15 and the remaining conditioned air is sent to the defroster air passage 13. Will be done. In this foot mode, for example, when the air mix door 8 is at a rotational position (hereinafter, air mix state) where cold air and hot air are mixed as indicated by X in FIG. It is necessary to provide a vertical temperature difference.

This is because the foot mode is normally used when heating the interior of the vehicle. For example, when the air mixing door 8 is in the air mixing state, the interior of the vehicle is sufficiently heated, and the air conditioning is not so hot. There is no need to blow the wind. At this time, conditioned air is blown into the foot air passage 15 at a temperature at which the occupant feels warm. When the conditioned air having the same temperature is blown into the defroster air passage 13, the conditioned wind is blown from the windshield. Along the route to the occupant's head, which may cause discomfort to the occupant.

As a result, in a general vehicle air conditioner,
The conditioned air sent to the defroster air passage 13 needs to be lower than the temperature of the conditioned air sent to the foot air passage 15 and at a temperature that can quickly remove the fogging of the windshield of the vehicle. . However, in the case where the vertical temperature difference is to be provided in this way, the temperature of the conditioned air sent to the defroster air passage 13 becomes extremely low due to the characteristics of the air conditioning case 2, and the anti-fog property of the windshield deteriorates. There is a problem. The reason for this is that, in the present embodiment, the defroster air passage 13 is provided in the air mix chamber portion 100 at the downstream side of the cool air passage 6 as shown in FIG.

However, in the present embodiment, the above problem is solved by the defroster hot air guide passage 11. Hereinafter, this will be described with reference to FIG. FIG.
As shown in the figure, the cool air that has passed through the cool air passage 6 in the air-mixed state is blown toward the blowout opening 50 formed by being surrounded by the seal wall 9 as shown by the arrow in the figure.

In this embodiment, as described in "Means for Solving the Problems", the hot air guide passage 11 for the defroster is provided by effectively utilizing the space near the downstream side of the seal wall 9. . As a result, warm air is blown from the warm air passage 7 to the warm air guide passage 11 for the defroster, and the warm air is supplied to the warm air guide passage 11 for the defroster so as to bypass the air mix chamber section 100 by the warm air guide passage 11 for the defroster. It is guided to the air passage 13. As a result, in the air mixing state, the temperature of the conditioned air sent to the defroster air passage 13 can be easily increased, and
The physique of the air conditioning case 2 of the vehicle air conditioner 1 can be made compact.

Further, in this embodiment, the warm air flowing through the warm air passage 7 is guided by the warm air guide portion 12 in cooperation with the seal wall 9 such that the warm air flows well into the defroster air passage 13. . Therefore, the air passage 1 for the defroster can be easily formed.
The temperature of the conditioned air blown to the third air conditioner 3 can be increased. In this embodiment, the defroster hot air passage 11
As described above, the air conditioning case 2 is formed in the vehicle width direction from the blowout opening 50 so that the air conditioning case 2 expands outward as shown in FIG.
Even if the amount of the conditioned air flowing through the air passage becomes large, the cold air flowing through the cold air passage 6 and the warm air flowing through the defroster warm air guide passage 11 are less likely to interfere with each other, so that the warm air is reliably supplied to the defroster warm air guide The air can be sent to the passage 11.

The hot air guide passage 11 for the defroster is
Since it is integrally formed with the air conditioning case 2, it is not necessary to separately form a guide for guiding the warm air to the defroster air passage 13, and the number of components can be reduced. Further, in the present embodiment, the hot air guide passage 11 for the defroster is used.
Since two are formed, a sufficient amount of warm air can be secured, and the temperature of the conditioned air flowing through the defroster air passage 13 can be easily increased.

Further, in this embodiment, since the defroster hot air guide passage 11 is formed inside the air conditioning cases 2a and 2b, the hot air can be easily air conditioned without complicating the shape of the air conditioning cases 2a and 2b. Leakage to the outside of the cases 2a and 2b can be prevented. Foot Differential Mode In the foot differential mode, the blow-out switching door 19 is set to the rotation position shown by g in FIG. 1 to close the face air passage 14 and fully open the foot air passage 15. Also,
The outlet switching door 18 is set to the intermediate rotation position shown by i in FIG. 1, and the defroster air passage 13 is opened.

Thus, the conditioned air whose temperature is adjusted by the air mix door 8 is sent to both the defroster air passage 13 and the foot air passage 15.
In this foot differential mode, the air mix door 8
Approximately half of the air-conditioned air whose temperature has been adjusted in the above is sent to the foot air passage 15, and the other half is sent to the defroster air passage 13.
It is designed to blow air. In the foot differential mode, the same effect as in the above-described foot mode is obtained.

Defroster Mode In the defroster mode, the air outlet switching door 18 is turned to the rotational position indicated by k in FIG. 1 to fully open the defroster air passage 13 and fully close the face air passage 14 and the foot air passage 15. As a result, the conditioned air that has been temperature-controlled by the air mix door 8 flows into the defroster air passage 13.
Only to be blown.

(Second Embodiment) Next, a second embodiment of the present invention will be described. This embodiment is different from the first embodiment in that the layout of each air conditioning function unit described above,
In order to achieve the five modes, the three air passage switching doors 22 to 24 open and close the air passages 13 to 15.

As shown in FIG. 4, the outlet switching door 22 is connected to the opening 8 of the air passage 13 for the defroster.
The upper and lower seal walls 84 make up the defroster air passage 13. Further, the defroster hot air guide passage 11 in this example is configured to blow hot air toward the upper seal wall 84 as shown by an arrow L in FIG.

Then, the hot air from the defroster hot air guide passage 11 flows in the direction of arrow L along the wall surface of the seal wall 9 and then hits the wall surface of the upper seal wall 84. That is, the defroster hot air guide passage 1 is formed by the upper seal wall 84.
Disturb the flow of warm air from one. Then, the hot air that has hit the upper seal wall 84 flows in the front and back directions in FIG. 4 and just accumulates the hot air at the upper seal wall 84 and the seal wall 9 (FIG. 4). (Site indicated by M)
Then, the hot air is blown over the entire area of the defroster air passage 13 so as to overflow.

In this manner, the upper seal wall 8 is formed.
4 (mixing member) and the seal wall 9 (mixing member) can mix the hot air flowing through the defroster hot air guide passage 11 and the cool air from the cool air passage 6 satisfactorily. Thereby, the temperature of the conditioned air flowing through the defroster air passage 13 can be made uniform, and the fogging of the windshield can be uniformly performed.

(Third Embodiment) Next, a third embodiment of the present invention will be described. This embodiment is different from the first and second embodiments in that the temperature of the conditioned air is adjusted by one air mix door 8 as a temperature adjustment door in the first and second embodiments. In the embodiment, the operation is performed by two temperature adjusting doors 20 and 21. The components having the same functions as those of the first and second embodiments are denoted by the same reference numerals. Furthermore, the present embodiment is different from the first embodiment in the configuration of the defroster hot air passage 11.

FIG. 5 shows an overall configuration diagram of the vehicle air conditioner 1 in this embodiment. FIG. 6 is a cross-sectional view taken along line CC in FIG. FIG. 7 is a top perspective view of FIG. 5 viewed from above. In FIG. 5, only the air conditioning case 2 is hatched for simplification. In the present embodiment, as shown in FIG. 5, the temperature of the conditioned air is adjusted by the cool air door 20 that adjusts the amount of cool air flowing through the cool air passage 6 and the warm air door 21 that adjusts the amount of warm air that flows through the warm air passage 7. I do.

More specifically, FIG.
When the rotation position is a fully open position of the cold air passage 6 indicated by a solid line,
The hot-air door 21 is in an operation position for completely closing the hot-air passage 7 indicated by a solid line in the drawing, and the cool air that has passed through the evaporator 3 is in a maximum cooling state in which all the cool air flows through the cool-air passage 6. Further, when the cool air door 20 is in the operating position for completely closing the cold air passage 6 shown by the dotted line in FIG. 5, the warm air door 21 is in the operating position for fully opening the warm air passage 7 shown in the dotted line in FIG. The cold air that has passed through the evaporator 3 passes through the heater core 4 and flows into the hot air passage 7 to be in a maximum heating state.

In this embodiment, the cold air door 20 and the hot air door 21 are in an air-mixed state.
The temperature of the conditioned air is adjusted by adjusting the amount of cool air flowing through the cool air passage 6 and the amount of cool air flowing through the warm air passage 7, respectively. The reason for this is as follows.
That is, in the present embodiment, the physique of the vehicle air conditioner in the vehicle front-rear width direction is reduced by reducing the arrangement interval between the evaporator 3 and the heater core 4 compared to the first embodiment.

Therefore, in this embodiment, it is impossible to adjust the temperature of the conditioned air at the air mix door 8 while securing the operation area of the air mix door 8 as in the first embodiment. Therefore, in the present embodiment, the cool air door 20 is disposed above the heater core 4, and the temperature of the conditioned air is adjusted by the cold air door 20 and the warm air door 21 described above.

As shown in FIG. 5, the above-described cold air door 20
A seal wall 9d for shutting off the cool air passage 6 and having a seal surface 9c is formed on the downstream side. The seal wall 9d is formed so as to protrude from the inner surface of the air-conditioning case 2, and is formed in a frame shape when viewed from the left and right directions in FIG. The outlet opening 50 is formed so as to be surrounded by the seal wall 9d. Therefore, the cool air door 20 closes the blowout opening 20a in the maximum heating state.

As shown in FIG. 6, the hot air guide passage 11 for the defroster according to the present embodiment includes the hot air guide portion 12, the inner wall of the air-conditioning case 2, and a plate-like plate portion forming a guide portion. 26. This allows
The defroster hot air guide passage 11 is formed so as to be divided from the cold air passage 6 and the hot air passage 7. The plate portion 26 is attached and fixed to the inner wall of the air-conditioning case 2 by fixing means such as screws.

As shown in FIGS. 5 and 6, the hot air intake port 11c at one end of the defroster hot air guide passage 11 is provided.
Are formed in the vicinity of the outlet of the hot air passage 7. The defroster hot air guide passage 11 is formed such that the flow passage extends upward. Further, the defroster hot air guide passage 11 is formed so as to change to the vehicle front side (the defroster air passage 13 side) after the flow passage extends upward. Then, the hot air guide passage 11 for the defroster
The hot air blowing portion 11b, which is the other end of the air outlet, is formed to open in the vicinity of the defroster air passage 13.

In the foot mode and the foot differential mode, when the cold air door 20 and the hot air door 21 are in an air-mix state, the hot air flowing through the hot air passage 7 is supplied to the hot air guide for the defroster. The air flows into the passage 11 and is blown into the defroster air passage 13 without being mixed with the cool air flowing through the cool air passage 6 at all. Here, FIGS. 8 and 9 show the inventor of the present invention in the foot differential mode, in the presence or absence of the defroster hot air guide passage 11, in the defroster air passage 1.
3 shows data representing the temperature of the conditioned air blown from the air passage 3 and the foot air passage 15. The horizontal axis in FIGS. 7 and 8 represents the rotation position at which the cool air door 20 and the warm air door 21 have turned from the maximum cooling state to the maximum heating state in the above-described air mixing state. .

As can be seen from this, when the defroster hot air guide passage 11 is formed as shown in FIG. 8, when the rotation position of the cold air door 20 and the hot air door 21 is S, The temperature of the conditioned air sent to the foot air passage 15 is about 37 degrees. On the other hand, the temperature of the conditioned air blown to the defroster air passage 13 in the same state is about 2 ° C.
At 6 degrees, the temperature difference is 11 degrees.

On the other hand, when the defroster hot air guide passage 11 shown in FIG. 9 is not provided, when the rotation position of the cold air door 20 and the hot air door 21 is the same S, the foot air passage 1
The temperature of the conditioned air sent to 5 is about 42 degrees. On the other hand, the temperature of the conditioned air sent to the defroster air passage 13 in the same state is about 20 degrees, and the temperature difference is 22 degrees.

As described above, also in the present embodiment, the same effects as in the first embodiment can be obtained. In the present embodiment,
Since the hot air guide passage 11 for the defroster is formed so as to be divided into the cold air passage 6 and the hot air passage 7, the hot air flowing through the hot air guide passage 11 for the defroster flows through the cold air flowing through the cold air passage 6 as described above. Does not mix at all. As a result, warm air having a high temperature can be easily and surely blown into the defroster air passage 13.

Further, in the present embodiment, the temperature of the conditioned air blown to the defroster air passage 13 can be easily adjusted by devising the shape of the plate portion 26 as described below. . That is, in the present embodiment, as shown in FIG. 7, the lowermost air portion of the plate-shaped portion 26 is formed to bend so as to enlarge the flow passage area of the defroster warm air passage 11. In such a foot mode and a foot differential mode, when the cool air door 20 and the warm air door 21 are in the air mixing mode, the cool air flowing through the cool air passage 6 is indicated by an arrow in FIG. It flows between the pair of plate portions 26. Accordingly, the most downstream portion of the plate-like portion 26 in the air forms a baffle plate 26 a that blocks the flow of the cool air from the cool air passage 6.

Thus, the baffle plate 2 of the hot air guide 12
The temperature of the conditioned air blown into the defroster air passage 13 can be easily adjusted by adjusting the manner of bending (shape) of the airbag 6a. (Fourth Embodiment) Next, a fourth embodiment of the present invention will be described. Note that the present embodiment differs from the third embodiment in the shape of the plate-like portion 26. In addition, the third
Those having the same functions as those of the embodiment are denoted by the same reference numerals.

FIG. 10 shows an overall configuration diagram of a vehicle air conditioner according to this embodiment. As shown in FIG. 10, this embodiment has no baffle plate 26a as compared with the third embodiment. Further, in the present embodiment, the net-like member 57 is provided in the air mix chamber section 100 in the third embodiment.
Is provided. First, the mesh member 57 will be briefly described. The mesh member 57 is formed in a flat plate shape from a metal such as stainless steel, and the plate surface is formed in a net shape. The mesh member 57 is for reducing abnormal noise generated by the air flow. Since the mesh member 57 is not a main part of the present invention, the description will be simplified.

FIG. 11 is a single view of the plate portion 26, and FIG. 12 is a side view of FIG. 11 as viewed from the side. The plate-like portion 26 is shown in FIG.
As shown in FIGS. 1 and 12, the plate-like portion 26 is formed with a guide hole 52 into which a guide pin 51 described later is inserted and a screw hole 53 into which a screw 54 described later is inserted. ing. FIG. 13 shows an inner surface structure of the air conditioning case 2 in a state where the plate-shaped portion 26 corresponding to FIG.

As shown in FIG. 13, a pedestal portion 55 is formed on the seal wall 9d located on the axial side of the rotating shaft 20a of the cool air door 20. The pedestal portion 55 functions as a pedestal for the plate portion 26. The pedestal 55 has a screw hole 56 into which the screw 54 is screwed. Here, a groove 58 for holding the mesh member 57 is formed at 58 in FIG. The groove 58 is formed by two rows of protrusions 58 a protruding from the inner surface of the air conditioning case 2.
Then, the mesh member 57 is inserted into the groove 58 so as to be sandwiched by the protruding portion 58 from above to below in FIG.

The tip of the protrusion 58 located on the left side in FIG. 13 and the pedestal surface of the pedestal 55 are located on the same plane. And the protruding portion 58a located on the left side in FIG.
The hot air guide portion 12 according to the second embodiment is configured, and the guide pin 51 is integrally formed so as to protrude upward in the drawing. 20b is a cold air door 20.
Is a shaft hole into which the rotating shaft 20a is inserted. Also, 60
Is a shaft hole into which the rotating shaft of the hot air door 21 is inserted.

Then, such a plate-like portion 26 is formed as shown in FIG.
The plate portion 26 is attached to the inner surface of the air-conditioning case 2 so that the guide pin 51 is inserted into the guide hole 52 as shown in FIG. After that, the screw 54 is screwed into the screw hole 56 to fix the plate portion 26 to the air conditioning case 2. Thus, the inner wall of the air conditioning case 2, the seal wall 9c, and the warm air guide portion 12 form the above-described warm air guide passage 11 for defroster.

As described above, also in this embodiment, the same effects as in the third embodiment can be obtained. In addition, the plate-like portions 26 described above are provided at both ends of the cool air door 20 in the axial direction of the rotation shaft 20a. In the second embodiment and the present embodiment, since the air-conditioning case 2 has a symmetric structure as shown in FIG. 6, the same plate-shaped portion 26 can be used in common.

(Fifth Embodiment) Next, a fourth embodiment of the present invention will be described. In the present embodiment, an example in which the driver's seat side and the passenger's seat side in the vehicle compartment are independently air-conditioned and applied to the vehicle air conditioner 1 of the independent temperature control type. In this embodiment, two air-conditioning cases 2 mounted on a left-hand drive vehicle and described in the second embodiment are connected in the vehicle width direction.

FIG. 15 corresponds to the air-conditioning case 2 shown in FIG. 5 in this embodiment arranged in the vehicle width direction. FIG. 16 corresponds to the air-conditioning case 2 shown in FIG. 7 in this embodiment arranged in the vehicle width direction. In addition,
The components having the same functions as those of the second embodiment are denoted by the same reference numerals. That is, in the present embodiment, as shown in FIGS. 15 and 16, the inside of the air conditioning case 2 is partitioned by the partition wall 30 into the driver side air conditioning passage 100 and the passenger seat side air conditioning passage 200. The present invention can also be applied to such an independent temperature-adjustable type vehicle air conditioner, and the present embodiment also provides the same effects as the above embodiments.

The defroster air passage 13 on the right side in FIGS. 15 and 16 is for blowing conditioned air to the passenger seat side of the vehicle windshield. On the other hand, FIG.
The defroster air passage 13 on the left side of the middle 5 and 16 is for blowing conditioned air to the driver's seat side of the vehicle windshield. Then, as shown in FIG.
Is interrupted on the way, and two defroster air passages 13 communicate with each other. This is because in the present embodiment, it is possible to blow different conditioned air on the driver seat side and the passenger seat side,
When conditioned air at different temperatures is blown out, the anti-fog properties are different between the driver's seat side and the passenger seat side. As a result, for example, if the temperature of the conditioned air blown to the driver's seat side is higher than that of the passenger's seat side, the fogging of the windshield is removed earlier on the driver's seat side, and the passenger's seat side is still removed. Something happens to be cloudy.

Therefore, in the present embodiment, the conditioned air flowing through the two defroster air passages 14 is mixed to make the temperature uniform and the air is blown to the windshield, so that the fogging of the windshield can be uniformly removed. . (Other Embodiments) The embodiments of the present invention have been described below, but the present invention can also be applied to the following embodiments.

In the above embodiment, the hot air guide portion 12 is provided. However, the hot air guide portion 12 is not formed as shown in FIG. Just inflate it. In the first embodiment as shown in FIG. 18, the defroster hot air guide passage 11 may be a completely independent passage as in the third to fifth embodiments. In this case, if the air-conditioning case is cut out in the front and back directions in FIG. 18, the hot air guide passage 11 for the defroster can be easily formed.

Further, in the above-described embodiment, the effect of the defroster hot air guide passage 11 has been described particularly in the foot mode and the foot differential mode. However, the present invention achieves the head cold foot heat in the bi-level mode described above. May be used to do so. Further, in the above embodiment, the hot air guide passage 11 for the defroster is formed by the seal wall 9.
Was formed, but may be formed without using the seal wall 9. That is, as long as it is near the downstream side of the seal wall 9, it may be formed downstream of the defroster hot air guide passage 11 in each of the above embodiments.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a vehicle air conditioner in the embodiment.

FIG. 2 is a sectional view taken along the line CC in FIG.

FIG. 3 is a diagram schematically illustrating a flow of hot air flowing through a defroster hot air guide passage 11 and cold air flowing through a cool air passage 6 in the embodiment.

FIG. 4 is an overall configuration diagram of a vehicle air conditioner according to a second embodiment of the present invention.

FIG. 5 is an overall configuration diagram of a vehicle air conditioner according to a third embodiment of the present invention.

6 is a diagram showing a cross-sectional view taken along the line CC in FIG. 5;

FIG. 7 is a top perspective view seen from above in FIG. 5;

FIG. 8 shows the temperature of the conditioned air blown to the defroster air passage 13 and the foot air passage 1 when the defroster air passage 11 in the third embodiment is formed.
FIG. 7 is a diagram showing experimental data on the temperature of the conditioned air blown to the air conditioner 5;

FIG. 9 shows a defroster air passage 13 when there is no defroster air passage 11 in the third embodiment.
FIG. 6 is a diagram showing experimental data of the temperature of the conditioned air blown to the air passage and the temperature of the conditioned air blown to the foot air passage 15.

FIG. 10 is an overall configuration diagram of a vehicle air conditioner according to a fourth embodiment of the present invention.

FIG. 11 is a single view of a plate-like portion 26 according to the fourth embodiment.

FIG. 12 is a side view of a plate-like portion 26 according to the fourth embodiment.

FIG. 13 is a detailed view of a main part of the vehicle air conditioner according to the fourth embodiment.

FIG. 14 is a detailed view of a main part of a vehicle air conditioner according to the fourth embodiment.

FIG. 15 is an overall configuration diagram of a vehicle air conditioner according to a fifth embodiment of the present invention.

FIG. 16 is an overall configuration diagram of a vehicle air conditioner according to a fifth embodiment of the present invention.

FIG. 17 is a diagram showing another embodiment of the present invention.

FIG. 18 is a diagram showing another embodiment of the present invention.

[Explanation of symbols]

2a: air conditioning case, 2b: air conditioning case, 6: cold air passage,
7 hot air passage, 8 air mixing door, 9, 9d sealing wall, 9a, 9c sealing surface, 11 hot air guide passage for defroster, 13 air passage for defroster, 15 air passage for foot

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Takahiro Suzuki 1-1-1, Showa-cho, Kariya-shi, Aichi Prefecture Inside DENSO Corporation (72) Inventor O ▲ Saki ▼ Katsuyuki 1-1-1, Showa-cho, Kariya-shi, Aichi Share Inside Company Denso (72) Inventor Isao Kinoshita 1-1-1 Showa-cho, Kariya-shi, Aichi Prefecture Inside Company Denso (72) Inventor Kotaro Suda 1-1-1, Showa-cho, Kariya-shi, Aichi Prefecture Inside Denso, Inc.

Claims (12)

[Claims] A cool air passage (6) through which cool air flows in an air conditioning case (2a, 2b) forming an air passage toward a vehicle interior.
And a hot air passage (7) through which warm air flows, and the air flow ratio between the cold air passage (6) and the hot air passage (7) is adjusted by the temperature control doors (8, 20, 21). The upper air passage (13) that communicates the conditioned air to an upper portion in the vehicle compartment, and the lower air passage (13) that communicates to the lower portion in the vehicle compartment. 15) In the vehicle air conditioner capable of blowing air to both sides, the air conditioning case (2a, 2b) is located downstream of the cold air passage (6) and the temperature control door (8, 20, 21). A sealing wall (9, 9d) is formed so as to protrude inward of the air-conditioning case (2a, 2b). The sealing wall (9, 9d) is an outlet of the cold air passage (6). And the temperature control door (8, 0) is the air conditioning case (2a, 2
b) At the time of maximum heating in which all of the conditioned air in the hot air passage (7) is blown to the hot air passage (7), it comes into contact with the temperature control doors (8, 20, 21) and closes the blowout opening (50). In the vicinity of the downstream side of the seal wall (9, 9d), the warm air from the warm air passage (7) is supplied to the upper air passage (13).
An air conditioner for a vehicle, characterized in that a hot air guide passage (11) for guiding the vehicle is provided. 2. In the air conditioning case (2a, 2b),
A cooling heat exchanger (3) for cooling the passing air is disposed, and passes through a part of a flow path on the downstream side of the cooling heat exchanger (3) of the air conditioning case (2a, 2b). By disposing the heating heat exchanger (6) for heating the air to be heated, the cool air passing through the cooling heat exchanger (3) allows the cool air passage (6) to bypass the heating heat exchanger (6). 2. The air conditioner for a vehicle according to claim 1, wherein a) is formed. 3. The temperature control door (20, 21) includes a first temperature control door (20) for adjusting an amount of cold air flowing through the cold air passage (6), and a hot air flow flowing through the hot air passage (7). And a second temperature control door (21) that adjusts the temperature. The hot air guide passage (11) is connected to the first temperature control door (2).
The air conditioner for a vehicle according to claim 2, wherein the air conditioner is formed near the downstream side of the seal wall (9d) that abuts on the seal wall (9). 4. A mixing member for mixing hot air flowing through the hot air guide passage (11) and cold air from the cold air passage (6) downstream of the hot air guide passage (11). 9,
The vehicle air conditioner according to claim 1 or 2, wherein (84) is provided. 5. The mixing member (9, 84) obstructs the flow of the warm air, temporarily stores the warm air, and then overflows the warm air to form the upper air passage (9, 84). The air conditioner for a vehicle according to claim 4, wherein air is blown over the entire area of (13). 6. An upper door (22) for opening and closing the upper air passage (13), wherein the upper door (22) is connected to the upper air passage (1).
The upper sealing wall (8) forming the outlet opening (83) of 3).
The upper air passage (13) closes the upper air passage (13) by contacting the upper air passage (13). The warm air guide passage (11) blows the warm air toward the upper seal wall (83). The vehicle air conditioner according to claim 4 or 5, wherein the mixing member (9, 84) is constituted by at least the upper seal wall (84). 7. The hot air passage (7) is configured to be curved toward a downstream side of the seal wall (9, 9d).
The air conditioner for a vehicle according to any one of the above. 8. A vehicle air conditioner according to claim 1, wherein said hot air guide passage is constituted by at least said seal walls. apparatus. 9. The warm air passage (7) is provided in the air conditioning case (2a, 2b) in cooperation with the seal wall (9, 9d).
The air conditioner for a vehicle according to claim 8, wherein a warm air guide portion (12, 26) for guiding warm air from the air to the upper air passage (13) is formed. 10. The hot air guide passage (11) is formed so as to be separated from the cold air passage (6) and the hot air passage (7). , 8,9
The vehicle air conditioner according to any one of the above. 11. A baffle plate portion (26a) for blocking a flow of cool air flowing through the cool air passage (6) is formed downstream of the hot air guide portion (26). The vehicle air conditioner according to claim 9 or claim 10. 12. The hot air guide passage (11) is provided at both ends in the direction of the rotation axis where the temperature control door (8, 20) rotates. 1
The vehicle air conditioner according to any one of claims 11 to 11.