JP3293537B2 - Vehicle air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for a vehicle, which is divided into two air passages, and outside air is taken into one air passage and inside air is taken into the other air passage to improve heating capacity and prevent fogging. The present invention relates to an air conditioner for a vehicle (hereinafter, a two-layer unit) that achieves both improvements in performance.

[0002]

2. Description of the Related Art Conventionally, a two-layer unit is disclosed in
There is one described in Japanese Patent Publication No. 318727. The inside and outside air unit of this vehicle air conditioner has a first passage 100 for inside air and a second passage 101 for outside air as shown in FIG. A first fan 110 and a second fan 11 driven by one motor 103 correspond to the air passages 100 and 101 in the inside and outside air units.
1 is provided.

The inside / outside air blowing unit has a first inside air inlet 1 at one end in the direction of the rotation axis of the motor 103 in the upper part of the figure.
02 and an outside air inlet 104 are formed. The first inside air introduction port 102 and the outside air introduction port 104 are opened and closed by a first inside / outside air switching door 106. In the inside / outside air blowing unit, a second inside air inlet 105 is formed at the lower end in the drawing in the direction of the rotation axis of the motor 103. The second inside air introduction port 105 is provided with a second inside / outside air switching door 107.
Is opened and closed.

A communication passage 108 is formed in the inside / outside air blower unit so as to communicate the suction ports of the first fan 110 and the second fan 111, and the communication passage 108 2 Opened and closed by the inside / outside air switching door 107. In order to switch the inside / outside air mode to the two-layer mode, the first inside / outside air inlet 10
2 and the outside air inlet 104 is opened. On the other hand, the first inside / outside air switching door 107
And the second inside air inlet 105 is opened.

As a result, inside air is taken into the first passage 100 from the second inside air inlet 105, and the second passage 10
1, outside air is taken in from outside air inlet 105. When outside air is taken into both the first passage 100 and the second passage 101, the first inside air inlet 104 is closed by the first inside / outside air switching door 106, and the outside air inlet 104 is opened. Further, the communication path 108 is opened by the second inside / outside air switching door 107, and the second inside air introduction port 105 is closed. As a result, the outside air from the outside air inlet 104 is drawn into the second fan 111 as shown by the arrow A in the drawing, and is drawn into the first fan 110 through the communication passage 108 as shown by the arrow B in the drawing. .

[0006]

However, in the two-layer unit as described above, the two air passages 100, 10
The first inside air inlet 102 and the second inside air inlet 105 are provided in correspondence with No. 1 and, as a result of the fact that they are actually mounted on a vehicle and examined by the present inventors, the following problems occur. I found out.

[0007] For example, the inventor of the present invention has seen the above-mentioned two-layer unit mounted on a vehicle with the upper side in FIG. Then, normally, the instrument panel (not shown) of the vehicle is disposed above the inside / outside air blowing unit so as to cover it, so that at the first inside air introduction port 102, the instrument panel becomes a sound insulation wall, and the occupant is not provided with a sound insulation wall. In this case, it becomes difficult to hear the suction noise at the first inside air inlet 102.

However, the instrument panel is interrupted on the lower side in the vehicle compartment in consideration of maintenance and inspection of the inside and outside air blowing units. Therefore, the inside / outside air blowing unit is exposed below the instrument panel, and the second inside air introduction port 105 is opened just at the feet of the occupant. As a result, there is a problem that the suction noise at the second inside air introduction port 105 has no obstruction, and is unpleasant and unpleasant. Furthermore, the second inside air inlet 105 has a problem that the noise level changes depending on the arrangement of the occupant's feet.

Accordingly, an object of the present invention is to reduce the discomfort of the occupant due to the suction noise at the inside air inlet in a two-layer unit having two inside air inlets.

[0010]

In order to achieve the above object, according to the first to third aspects of the present invention, the inside air is introduced into the first passage (5a), which is provided above the inside and outside air unit (1). A first inside air introduction port (26), and a lower portion of the inside and outside air unit (1) below the first inside air introduction port (26), and a second passage from near the partition wall (2).
A second inside air inlet (2) for introducing inside air to (5b)
1) and an opening and closing member for opening and closing the second inside air inlet (21)
(27), and the inside and outside air unit (1) includes
Inside air extending forward and communicating with the second inside air inlet (21)
The sound insulation case part (30) constituting the flow path (31) is connected
It is characterized by being.

[0011] Thus, since the inside air is introduced into the second passage from a position away from the occupant in the front of the vehicle interior and near the partition wall, the suction noise here is hard to be heard by the occupant. Thereby, the discomfort of the occupant due to the suction noise can be reduced.

In particular, according to the first aspect, regardless of the position of the second inside air introduction port , the inside air can be introduced into the second passage from the vicinity of the partition wall by the sound insulation case portion. According to the third aspect of the present invention, the first and second fans include a temperature control unit (10) arranged to line up with the inside / outside air unit (1) in the vehicle width direction and adjusting the temperature of air. (6a, 6b) is a front portion of the inside / outside air unit (1), and supplies air in the vehicle width direction to the temperature control unit (1).
0) and the temperature control unit (1
0) is characterized in that the air blown out from the inside / outside air unit (1) flows from the vehicle front side to the vehicle rear side.

Thus, the second inside air introduction port must be formed on the vehicle rear side of the inside / outside air unit, but the inside air can be introduced into the second passage from the vicinity of the partition wall by the sound insulation case portion. In the invention according to claim 4 , the instrument panel (P) is disposed on the passenger side of the instrument panel (P) and on the vehicle rear side of the inside / outside air unit (1) so as to face the inside / outside air unit (1), so that the article is disposed. The present invention is applied to a vehicle air conditioner provided with a container-like storage member (20) to be mounted and mounted on a vehicle, and the second inside air inlet (21) is an outer wall surface of the storage member (20) on the vehicle front side. It is characterized in that it is provided at a position facing (20a).

[0014] Thus, the suction noise transmitted to the interior of the vehicle at the second inside air inlet is shielded by the outer wall surface, and the suction noise is hardly heard by the occupant. As a result, discomfort of the occupant due to the suction noise can be reduced. Also,
In the invention according to claim 5 , the outer wall surface (20a) has the second
A sound absorbing member (33) for absorbing suction noise at the inside air inlet (21) is provided.

[0015] Thus, the suction noise in the second inside air introduction is reduced by being absorbed by the sound absorbing member, and becomes inaudible to the occupant. As a result, the occupant's discomfort due to the suction noise can be further reduced. Further, in the invention according to claim 6 , the first inside air introduction is arranged above the inside and outside air unit (1), inside the instrument panel (P), and for introducing inside air into the first passage. A second inside air inlet (21) having an opening (26), located above the inside / outside air unit (1), and close to the first inside air inlet (26) for introducing inside air into the second passage; Is arranged.

[0016] Thus, as compared with the case where the second inside air introduction port is provided below the inside / outside air unit, the instrument panel functions as a sound insulation wall, so that suction noise at the second inside air introduction port is reduced. it can. As a result, discomfort of the occupant due to the suction noise can be reduced. Further, in the invention according to claim 8 , in the inside and outside air unit (1), at a portion below the first inside air inlet (26), the opening is made in the width direction of the vehicle, and the passenger seat in the width direction of the vehicle is provided. The second passage (5b) is arranged to face the interior wall of the vehicle and to introduce inside air to the second passage (5b).
It is characterized by having an inside air inlet (21).

Accordingly, the second inside air inlet is not opened toward the occupant, but is opened in the width direction of the vehicle. Therefore, the suction noise at the second inside air inlet is reduced by the occupant in the vehicle compartment. And does not spread all over. For this reason, the suction noise that the occupant actually hears can be reduced. In addition, considering the driver as a center, since the second inside air introduction port is open near the passenger compartment side of the passenger compartment side, the suction noise here is:
It is possible to make it difficult for the driver to hear. As a result, discomfort of the occupant due to the suction noise can be reduced.

According to the tenth aspect of the present invention, there is provided a temperature control unit (10) arranged to line up with the inside / outside air unit (1) in the vehicle width direction and adjusting the temperature of air. The second fan (6a, 6b) blows air to the temperature control unit (10) in the vehicle width direction at a portion of the inside and outside air unit (1) in front of the vehicle, and the temperature control unit (10) The air blown from the inside / outside air unit (1) flows from the vehicle front side toward the vehicle rear side, and the second inside air introduction port (21)
It is characterized in that it is opened toward the driver's seat side and opposed to a passenger seat side outer wall (52) of the temperature control unit (10).

Accordingly, the second inside air inlet is open toward the driver's seat side in the width direction of the vehicle, so that the suction noise at the second inside air inlet is spread toward the entire rear area of the vehicle interior. Absent. For this reason, the suction noise that the occupant actually hears can be reduced, and the occupant's discomfort due to the suction noise can be reduced.
In addition, considering the passenger seat, the suction noise here can be made hard to be heard by the passenger seat because the opening is toward the driver seat side. On the other hand, considering the driver as a center, the second inside air inlet port is open toward the driver, but since the second inside air inlet port is disposed opposite to the passenger seat side outer wall of the temperature control unit, The second, which is just the suction noise source
A temperature control unit exists between the inside air inlet and the driver, and the passenger side outer wall plays a role of a sound insulating wall. Thus, not only the passenger but also the driver can hardly hear the suction noise.

[0020]

DETAILED DESCRIPTION OF THE INVENTION

(First Embodiment) FIG. 1 shows a mounting diagram of an inside / outside air unit 1 of a vehicle air conditioner according to the present embodiment. FIG. 2 shows a top view of the inside / outside air unit 1 as viewed from above in FIG. The vehicle air conditioner of this example is for a right-hand drive vehicle.

The inside / outside air unit 1 constitutes the most upstream air portion of the vehicle air conditioner. Inside and outside air unit 1
Is disposed on the vehicle front side of the instrument panel P which forms a design surface on the vehicle front side in the vehicle interior. The inside / outside air unit 1 is disposed on the vehicle rear side of a steel-made partition wall 2 that partitions an engine room (E / G) from a vehicle interior.

That is, the inside / outside air unit 1 includes the partition plate 2
And the instrument panel P.
In addition, a container-like storage member (hereinafter referred to as a glow box 20) that is disposed opposite to the inside / outside air unit 1 and stores articles is provided on the passenger seat side of the instrument panel P and on the vehicle rear side of the inside / outside air unit 1. ) Is provided. The glow box 20 is configured to rotate in a direction indicated by an arrow C in FIG. 1 on a rotation shaft 20b rotatably supported by the instrument panel P. Thus, the glow box 20 can be opened and closed.

The inside / outside air unit 1 has an air-conditioning case 3 forming an air flow path into the vehicle interior. The inside of the air-conditioning case 3 is partitioned into two passages by a partition plate 4 extending in the horizontal direction. More specifically, the air-conditioning case 3 has a scroll case portion 3a in which the flow path has a scroll shape, and the inside of the scroll case portion 3a is partitioned by a partition plate 4 in the up-down (top and bottom) direction, and The first and second passages 5 so as to line up
a and 5b are formed.

A temperature control unit 10 for adjusting the temperature of the conditioned air is disposed downstream of the first and second passages 5a and 5b (see FIG. 3). The temperature control unit 10 is actually arranged in the vehicle width direction with the inside / outside air unit 1 and is disposed at a central portion in the vehicle width direction, which is schematically shown in FIG. The temperature control unit 10 will be briefly described with reference to FIG. The inside of the temperature control unit 10 is partitioned by a partition plate 11 into two passages (a first passage 5a and a second passage 5b). In the temperature control unit 10, a well-known evaporator 12, which is a cooling heat exchanger, is arranged. Also,
In the temperature control unit 10, on the downstream side of the evaporator 12 in the air (rear side of the vehicle), there is provided a temperature control unit 13 including a known heater core or the like. Temperature adjustment unit 13
Adjusts the temperature of the conditioned air by adjusting the heating amount of the air passing through the evaporator 12.

The temperature adjusting section 13 includes, for example, a heater core using the engine cooling water of the vehicle as a heat source, and the evaporator 1.
2 comprises a well-known air mix door or the like for adjusting the flow rate of the cool air passing through the heater core. And
The air blown out from the inside / outside air unit 1 flows from the front side to the back side in FIG.
b, flows in the vehicle width direction, and is introduced into the temperature control unit 10. The air introduced into the temperature control unit 10 changes its direction so as to flow from the vehicle front side to the vehicle rear side as shown by an arrow A in FIG.
2 and the heater core.

On the downstream side of the air from the temperature control unit 13, a face air passage 14 serving as an upper body air passage for blowing conditioned air toward the occupant's upper body, and a vehicle windshield 15 (see FIG. 1). A defroster air passage 16 that blows the conditioned air and a foot air passage 17 that forms a lower body air passage that blows the conditioned air toward the lower body of the occupant are formed.

The air passages 14, 16, 17 are opened and closed by air outlet switching doors 18, 19, which are opening and closing members. As a result, the following outlet modes can be switched. (Defroster mode) The blower passage 16 for the defroster is opened at the outlet switching door 18 and the blower passage 1 for the face is opened.
4 is closed, and the foot air passage 17 is closed by the outlet switching door 19. As a result, the conditioned air is blown only to the defroster air passage 16.

(Face mode) The air outlet switching door 18 closes the defroster air passage 16, opens the face air passage 14, and further opens the air outlet switching door 19.
The foot air passage 17 is closed with. As a result, the conditioned air is sent only to the face air passage 14. (Bi-level mode) The air outlet switching door 18 closes the defroster air passage 16 and the face air passage 14
Is further opened by the outlet switching door 19. Thereby, the conditioned air is sent to both the face air passage 14 and the foot air passage 17.

(Foot mode) The air outlet switching door 18 opens the defroster air passage 16, closes the face air passage 14, and further opens the air outlet switching door 19.
To open the air passage 17 for the foot. Thus, the conditioned air is sent to both the defroster air passage 16 and the foot air passage 17.

Continuing with the description of the inside / outside air unit 1 described above, the first passage 5a and the second passage 5b have
As shown in FIG. 1, fans 6a and 6b for generating airflow into the vehicle interior are arranged. The fans 6a and 6b
In this example, it is a centrifugal multi-blade fan (sirocco fan),
It is integrally formed of resin. These fans 6a, 6b
Are arranged such that the direction of the axis of rotation points in the vertical direction. In other words, the fans 6a and 6b are both suction-type fans that draw in from both sides in the axial direction (vertical direction). The fan 6a sucks air from above to below, and the fan 6b sucks air from below to above.

In this embodiment, the above-mentioned temperature control unit 1
In the case of 0, since it is necessary to introduce air from the front side of the vehicle, the air blowing portion 3c of the scroll case portion 3a is arranged in front of the vehicle (see FIGS. 1 and 2). In other words, the fans 6a and 6b are arranged so as to blow air in the vehicle width direction to the temperature control unit 10 at the front part of the inside and outside air unit 1 in the vehicle, and the temperature control unit 10 The blown air flows from the vehicle front side toward the vehicle rear side.

As shown in FIG. 1, the fans 6a and 6b
The electric motors 7 are integrally driven by the electric motors 7, and the electric motors 7 are inserted from the suction port of the fan 6a upward from below. Therefore, the suction resistance of the fan 6a is
The size is increased by the electric motor 7, and the amount of air-conditioning air is difficult to be generated. Therefore, in this example, the diameter of the fan is made larger than that of the fan 6a in order to increase the blowing capacity of the fan 6a in anticipation of the increase in the suction resistance of the electric motor 7.

The electric motor 7 is attached to a mounting stay 8.
Is attached to the outer wall surface of the scroll case portion 3a. A first passage 5a is provided above the inside / outside air unit 1.
A first inside air introduction port 26 for introducing inside air to the inside and an outside air introduction port 22 for introducing outside air into the first passage 5a and the second passage 5b are formed.

The outside air inlet 22 communicates with an outside air inlet 23 opened above the partition wall 2 through a duct 24 as shown in FIG. The first inside air introduction port 26 is opened at an upper part in the instrument panel P. The outside air inlet 22 and the first inside air inlet 26
Are formed above the fan 6a, and are selectively switched by a first inside / outside air switching door 25 which is an opening / closing member.

In the inside / outside air unit 1, a first inside air inlet 2
A filter member 40 for removing dust is provided between the fan 6 and the fan 6a. This filter member 40
Is easily detachable, and the filter member 40
Removal from the inside / outside air unit 1 is performed as follows. First, the glow box 20 is removed from the instrument panel P. Then, the lid 41 for taking out the filter member 40 is exposed in the vehicle interior. When the lid 41 is further removed, the end of the filter member 40 is exposed to the vehicle interior, and the filter member 40 is pulled out to the rear side of the vehicle using the exposed portion as a handle. This allows
The filter member 40 can be removed from the inside / outside air unit 1. When the filter member 40 is installed in the inside / outside air unit 1, the above procedure is performed in reverse.

The fan 6 is located below the inside / outside air unit 1.
A second inside air inlet 21 for introducing inside air into the second passage 5b is formed in a lower portion of the inside passage b. The second inside air introduction port 21 is provided with a second inside / outside air switching door 27 which is an opening / closing member.
Is opened and closed. Further, inside the inside / outside air unit 1, the outside air introduction port 22 is provided so as to extend in the vertical direction toward the rear side of the vehicle.
A communication passage 29 is provided for communicating the fan with the suction port 28 of the fan 6b. The communication passage 29 is opened and closed by the second inside / outside air switching door 27. Mari, the second inside / outside air switching door 2
Reference numeral 7 selectively opens and closes the second inside air inlet 21 and the communication passage 29.

The communication passage 29 is provided to achieve a full outside air mode in which outside air is introduced into both the first passage 5a and the second passage 5b. In the all outside air mode, the first inside / outside air switching door 25
However, the first inside air inlet 26 is closed, the outside air inlet 22 is opened, and the second inside / outside air switching door 27 closes the second inside air inlet 21 to open the communication passage 29. Thereby, outside air is introduced into the first passage 5a from the outside air introduction port 22, and outside air is introduced into the second passage 5b from the outside air introduction port 22 through the communication path 29 as shown by an arrow E in FIG. .

In this embodiment, in addition to the above-described all-outside air mode, the inside-outside air mode can be switched between an all-inside-air mode and a two-layer mode. In the all inside air mode, the first inside / outside air switching door 25 opens the first inside air introduction port 26 and closes the outside air introduction port 22, and the second inside / outside air switching door 27 opens the second inside air introduction port 21. , The communication passage 29 is closed. As a result, the inside air is introduced into the first passage 5a from the first inside air inlet 26, and the second air is introduced into the second passage 5b.
Inside air is introduced from the inside air inlet 21.

In the two-layer mode, the first inside / outside air switching door 25
However, the first inside air introduction port 26 is closed and the outside air introduction port 22 is opened, and the second inside / outside air switching door 27 opens the second inside air introduction port 21 and closes the communication passage 29. As a result, outside air is introduced into the first passage 5a from the outside air introduction port 22, and inside air is introduced into the second passage 5b from the second inside air introduction port 21.

As a result, in the foot mode,
Since relatively low-humidity outside air is introduced into the first passage 5a, the anti-fog property of the windshield 15 can be secured, and further, relatively high-temperature inside air is introduced into the second passage 5b, thereby increasing the heating capacity. Can be improved. Here, the above-described all outside air mode can be achieved without providing the communication passage 29, for example, by providing another outside air introduction port below the inside and outside air unit 1. However, in this case, since the outside air inlet and the outside air intake 23 communicate with each other,
4 must be provided.

For this reason, the arrangement of the duct 24 becomes complicated, and it is necessary to form another outside air inlet 23, which is not practically preferable. Therefore, in this example, by providing the communication path 29 as described above, it is possible to easily achieve the all outside air mode with one outside air inlet 24. The communication passage 29 is formed on the rear side of the vehicle in the inside / outside air unit 1 as shown in FIG. 1 for the following reason. In this example, as described above, the blowing portion 3c of the scroll case portion 3a is disposed on the vehicle front side of the inside / outside air unit 1. Therefore, if the communication passage 29 is to be formed on the front side of the vehicle as in the case of the blow-out portion 3c, the shape of the air-conditioning case 3 becomes complicated, and the physical size of the inside / outside air unit 1 in the vehicle front-rear direction becomes large.

Further, the communication passage 29 and the second inside air introduction port 21 are selectively opened and closed by a second inside / outside air switching door 27 which is one door member, thereby achieving the two-layer mode. To do so, the second inside / outside air switching door 27 needs to be disposed on the vehicle rear side of the fan 6b. For this reason,
In this example, the second inside air introduction port 21 must be formed on the vehicle front side of the inside / outside air unit 1. Further, the second inside air introduction port 21 must of course communicate with the vehicle interior, and the instrument panel P is provided with the interior and exterior air unit 1 as shown in FIG. The lower side is interrupted and the inside / outside air unit 1 is exposed.

Therefore, in the present embodiment, if the inside air is introduced from the second inside air introduction port 21 in the two-layer mode and the whole inside air mode, the second inside air introduction port 21 is opened just at the foot of the occupant. Become. As a result, the suction noise at the second inside air inlet 21 has no obstruction, and is unpleasant and unpleasant. Furthermore, the noise level of the suction noise changes depending on the arrangement of the occupant's foot (F).

Therefore, in this embodiment, as shown in FIG. 1, a sound insulation case section 30 is connected to the inside / outside air unit 1 in order to reduce this noise level. FIG. 4 shows a single view of the sound insulation case section 30. The sound insulation case section 30 is formed of a resin material such as polypropylene. Sound insulation case 30
Is a container having a rectangular flat bottom 30a as a bottom surface.
It is formed in a shape such that one wall is removed.

The sound-insulating case 30 is attached to the lower part of the inside / outside air unit 1 by a fastening member such as a screw. Then, as shown in FIG. 1, the inside / outside air unit 1 has a inside air flow path 31 extending to the front side of the vehicle and communicating with the second inside air introduction port 21. Therefore, the substantial inside air inlet of the inside / outside air unit 1 is the second inside air inlet 2
1, the inside air intake 32 is formed by the sound insulation case portion 30 and the air conditioning case 3 that opens toward the front of the vehicle near the partition wall 2.

For this reason, inside air is introduced into the second passage 5b from the vicinity of the partition wall 2 as shown by an arrow B in FIG. As a result, compared to the case where there is no sound insulation case section 30, the noise at the second inside air introduction port 21 is reduced by the sound insulation case section 30 because the second inside air introduction port 21 is covered with the sound insulation case section 30. Is done. As a result, the second inside air inlet 2
1 is reduced.

Further, since the inside air inlet 32 is formed at a position farthest from the occupant in the vicinity of the partition wall 2 at the forefront in the vehicle cabin, the suction noise here is hard to be heard by the occupant. Thereby, the inside air intake 32 that the occupant actually hears
Suction noise can be reduced. As a result, discomfort to the occupant can be reduced. FIG. 5 shows experimental data studied by the present inventors, and the hatched portions indicate the noise reduction effect of the present invention. In this experimental condition, 12 V was applied to the electric motor 7, and the fans 6a and 6b were used at the maximum capacity.

By providing the inside air inlet 32 near the partition wall 2 as described above, it is possible to reduce a change in the suction noise at the inside air inlet 32 depending on the position of the occupant's foot F. Further, in this example, as shown in FIG.
Since the bottom surface of the inner and outer air units 1 is formed in a planar shape, the physical size of the inside and outside air unit 1 in the vertical direction can be reduced. (Second Embodiment) Next, a second embodiment of the present invention will be described. In this example, as compared with the first embodiment, the sound insulation case 30 is not provided, and the formation position of the second inside air inlet 21 is different.

In the present embodiment, the second inside air inlet 21 is provided as shown in FIG.
As shown in the figure, the glow box 20 is provided at a position facing the outer wall surface 20a on the vehicle front side. As a result, the suction noise transmitted to the inside of the vehicle at the second inside air inlet 21 is shielded by the outer wall surface 20a, and the suction noise becomes difficult for the occupant to hear. As a result, the suction noise at the second inside air intake 21 can be reduced, and the occupant's discomfort can be reduced. FIG. 7 shows experimental data studied by the present inventors.

The experimental data is obtained by comparing the data of the first embodiment without the sound insulation case 30 with the data of the present embodiment under the same conditions as in the first embodiment. In the figure, the hatched portion indicates the amount of noise reduction, and as can be seen from the figure, it can be seen that the noise level around the frequency of 1 kHz, which is particularly unpleasant for the occupant, is reduced. (Third Embodiment) Next, a second embodiment of the present invention will be described.

In this example, in addition to the above-described second embodiment, a sound absorbing member 33 that absorbs the suction noise at the second inside air inlet 21 is provided on the outer wall surface 20a. The sound absorbing member 33 is formed in a plate shape with, for example, urethane foam having a high foaming density, and is attached to the outer wall surface 20 with an adhesive or the like. Thereby, the inside of the second inside air introduction 21
Is reduced by the sound absorption by the sound absorbing member 33, and becomes inaudible to the occupant. As a result, suction noise can be further reduced, and discomfort to the occupant can be reduced. FIG. 9 shows experimental data studied by the present inventors.

The experimental data is a comparison between the present embodiment and the case where the sound insulation case section 30 in the first embodiment is not provided under the same conditions as the first embodiment. (Fourth Embodiment) Next, a fourth embodiment of the present invention will be described. In this example, the formation position of the second inside air introduction port 21 is different from each of the above embodiments. FIG. 10 shows a configuration diagram of the inside / outside air unit 1 in this example.

The second inside air inlet 21 in the present embodiment is arranged above the inside / outside air unit 1 and above the inside of the instrument panel P, close to the first inside air inlet 26. For this reason, as compared with the case where the second inside air introduction port 21 is provided below the inside / outside air unit 1, the instrument panel P serves as a sound insulation wall, so that the suction noise at the second inside air introduction port 21 is reduced. Can be reduced.

Also, by providing the first inside air introduction port 26 and the second inside air introduction port 21 in this manner, the first and second inside air introduction ports allow the first filter member 40 to operate in the first inside air mode.
Dust and the like contained in the inside air introduced into both of the second passages 5a and 5b can be removed. (Fifth Embodiment) Next, a fifth embodiment of the present invention will be described. In the present embodiment, the formation positions of the communication passage 29 and the second inside air inlet 21 are different in each of the above embodiments. FIG.
FIG. 1 shows a schematic vehicle mounting diagram of the vehicle air conditioner of this example. FIG. 12 is a schematic top view viewed from above in FIG.

The communication passage 29 of this embodiment is formed on the passenger seat side of the first and second fans 6a and 6b in the inside / outside air unit 1. Further, the second inside air inlet 21 is provided on the passenger seat side of the first and second fans 6a and 6b, and is connected to the communication passage 29.
An opening is formed. And the second inside air inlet 21
Is opened in the width direction of the vehicle, and is disposed to face the vehicle interior wall 51 on the passenger seat side in the width direction of the vehicle. In other words, the inside / outside air unit 1 is arranged at the forefront part in the vehicle interior, and the second inside air introduction port 21 is opened not in the direction of the occupant but in the width direction of the vehicle. In addition, the suction noise at the second inside air inlet 21 does not spread to the occupant in the vehicle interior and the whole area. For this reason,
The suction noise that the occupant actually hears can be reduced.

In consideration of the driver, since the second inside air inlet 21 is opened near the passenger compartment wall 51 on the passenger seat side, the suction noise here is hard to be heard by the driver. be able to. (Sixth Embodiment) Next, a sixth embodiment of the present invention will be described. In the present embodiment, in each of the above embodiments, the formation position of the communication passage 29 and the second inside air inlet 21 is different. FIG. 13 shows a schematic vehicle mounting diagram of the vehicle air conditioner of this example. FIG. 14 is a schematic top view viewed from above from below in FIG.

As shown in FIGS. 13 and 14, the communication passage 29 of the present embodiment includes the first and second fans 6 of the inside / outside air unit 1.
a, 6b and the temperature control unit (10). The second inside air inlet 21 is formed in the communication passage 29. Further, the second inside air inlet 21 is provided as shown in FIG.
As shown in FIG. 14, the door is opened toward the driver's seat side, and a passenger seat side outer wall 5 on the passenger seat side of the outer wall of the temperature control unit 10.
2 are disposed opposite to each other. The outer wall 52 is a resin case member that houses the evaporator 12 and the heater core.

That is, the inside / outside air unit 1 is arranged at the foremost position in the vehicle interior and the second inside air introduction port 2
1 is open toward the driver's seat side in the width direction of the vehicle, the suction noise at the second inside air inlet 21 does not spread toward the entire rear area of the vehicle interior. For this reason, the suction noise that the occupant actually hears can be reduced. In addition, considering the passenger seat, the suction noise here can be made hard to be heard by the passenger seat because the opening is toward the driver seat side. On the other hand, considering the driver as a center, the second inside air inlet 21 is open to the driver, but between the second inside air inlet 21 which is a suction noise source and the driver,
The temperature control unit 10 is present, and the outer wall 52 plays a role of a sound insulation wall. Thereby, it is possible to make it difficult for not only the passenger but also the driver to hear.

(Modification) In each of the above embodiments, the layout of the inside / outside air unit 1 and the temperature control unit 10 has been described. However, the present invention is not limited to this, and may be applied to any layout. In the fifth embodiment,
In a portion of the inner wall 51 facing the second inside air inlet 21,
A sound absorbing member as in the third embodiment may be arranged.

In the sixth embodiment, the outer wall 5
The sound absorbing member as in the third embodiment may be arranged at a portion of the second air inlet 2 facing the second inside air inlet 21.

[Brief description of the drawings]

FIG. 1 is a vehicle mounting diagram of an inside / outside air unit according to a first embodiment of the present invention.

FIG. 2 is a top view of the inside / outside air unit in the first embodiment.

FIG. 3 is a configuration diagram of a temperature control unit in the first to fourth embodiments of the present invention.

FIG. 4 is a single view of the sound insulation case section in the first embodiment.

FIG. 5 is experimental data showing the effect of the first embodiment.

FIG. 6 is a vehicle-mounted view of an inside / outside air unit according to a second embodiment of the present invention.

FIG. 7 is experimental data showing the effect of the second embodiment.

FIG. 8 is a view of the inside and outside air unit mounted on a vehicle according to a third embodiment of the present invention.

FIG. 9 is experimental data showing the effect of the third embodiment.

FIG. 10 is a vehicle-mounted view of an inside / outside air unit according to a fourth embodiment of the present invention.

FIG. 11 is a view showing a vehicle mounted with an inside / outside air unit according to a fifth embodiment of the present invention.

FIG. 12 is a schematic top view of FIG. 11 viewed from above to below.

FIG. 13 is a vehicle-mounted view of an inside / outside air unit according to a sixth embodiment of the present invention.

FIG. 14 is a schematic top view of FIG. 13 as viewed from above from below.

FIG. 15 is a configuration diagram of a conventional inside / outside air unit.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Inside / outside air unit, 3 ... Air-conditioning case, 5a ... 1st passage, 5b ... 2nd passage, 26 ... 1st inside air introduction port.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-263822 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60H 1/00 102

Claims (11)

(57) [Claims] 1. An air-conditioning case (3) having two first and second air conditioners.
Partitioning into passages (5a, 5b), outside air can be introduced into the first passage (5a), and inside air can be introduced into the second passage (5b). A vehicle air conditioner having an inside / outside air unit (1) disposed on a vehicle rear side of a partition wall (2) that separates an engine room (E / G) from a vehicle interior side, wherein the inside / outside air unit ( A first inside air inlet (26) provided at an upper part of the first passage (5) for introducing inside air into the first passage (5a); and a first inside air inlet (26) of the inside and outside air unit (1). ) , And the partition wall (2)
From inside, the inside air is introduced into the second passage (5b).
A second inside air inlet (21) for opening and closing the opening and closing member (2) for opening and closing the second inside air inlet (21);
7) wherein the inside and outside air unit (1) extends forward of the vehicle,
The inside air flow path (3) communicating with the second inside air introduction port (21)
An air conditioner for a vehicle, wherein a sound insulation case (30) constituting (1) is connected . 2. In the upper part of the inside / outside air unit (1)
For introducing outside air into the first passage (5a).
Outside air inlet (22), the outside air inlet (22), and the first inside air inlet (26)
Inside and outside air opening / closing members (25) for opening and closing the first and second passages (5a, 5b).
Generates airflow toward
The first and second fans (6
a, 6b), and the first fan (6a) is emptied downward from above.
The second fan (6
b) sucks air from below to above.
The outside air inlet (22) and the first inside air inlet (2
6) above the first and second fans (6a, 6b)
The second inside air inlet (21) is formed in the first and second air inlets.
The inside and outside air unit (1) is formed in the lower part of the inside (6a, 6b) ,
The outside air inlet (22) and the
A connection communicating with the suction port (28) of the second fan (6b).
A passage (29) is provided, and the opening / closing member (27) is connected to the second inside air inlet (21).
2. The vehicle air conditioner according to claim 1 , wherein the communication passage is opened and closed . 3. The inside / outside air unit (1) and a vehicle width direction.
Temperature control unit that adjusts air temperature
(10), and the first and second fans (6a, 6b) are provided with the inside / outside air unit.
Air in the vehicle width direction at the front part of the vehicle
So that it blows out to the temperature control unit (10).
And the temperature control unit (10) includes the inside / outside air unit.
(1) Air blown from the front side of the vehicle to the rear of the vehicle
3. The air conditioner for a vehicle according to claim 2, wherein the air flows toward the side . 4. An air-conditioning case (3) provided by partitioning the inside.
Two first and second passages (5a, 5b),
A first inside air inlet for introducing inside air into one passage (5a)
(26) and the inside air is introduced into the second passage (5b).
A second inside air inlet (21) for at least the first
An outside air inlet (22) for introducing outside air into the road (5a)
And the instrument panel of the vehicle.
Inside and outside air unit (1) arranged on the front side of vehicle (P)
The instrument panel (P) has a passenger seat side,
At the vehicle rear side of the inside / outside air unit (1),
It is arranged to face the outside air unit (1) and stores articles.
A container-like storage member (20) is provided and mounted on a vehicle.
The second inside air inlet (21) is connected to the storage member (20).
At a position facing the outer wall surface (20a) on the front side of the vehicle.
An air conditioner for a vehicle, which is provided . 5. The second inner wall is provided on the outer wall surface (20a).
A sound absorbing member (3) for absorbing suction noise at the air inlet (21);
The vehicle air conditioner according to claim 4, wherein (3) is provided . 6. An air conditioning case (3) having two first and second air conditioners.
Partition into the passages (5a, 5b) and into the first passage (5a)
Outside air can be introduced and inside air can be introduced into the second passage (5b).
And the vehicle's instrument panel (P)
It has an inside and outside air unit (1) arranged on the front side of the vehicle
An air conditioner for a vehicle, wherein the instrument is located above the inside / outside air unit (1).
The first panel is disposed on the upper side in the
A first inside air inlet (26) for introducing inside air into the passage;
A portion above the inside / outside air unit (1), and the first inside
The inside air is guided to the second passage in proximity to the air inlet (26).
That the second inside air introduction port (21) for entering
Characteristic vehicle air conditioner. 7. The inside and outside air unit (1), wherein
A first inside air inlet (26) and the second inside air inlet (21);
One filter member for removing dust on the downstream side of the air
7. The method according to claim 6, wherein (40) is provided.
-Mounted vehicle air conditioner. 8. An air conditioning case (3) having two first and second air conditioners.
Partition into the passages (5a, 5b) and into the first passage (5a)
While introducing outside air, inside air is introduced into the second passage (5b).
To switch the vehicle's instrument panel (P)
It has an inside / outside air unit (1) arranged on the front side of the vehicle
An air conditioner for a vehicle, which is provided at a position above the inside / outside air unit (1),
First inside air introduction for introducing inside air into the first passage (5a)
A port (26) and the first inside air inlet of the inside / outside air unit (1)
(26) Opening in the width direction of the vehicle at a position lower than
In the width direction of the vehicle, facing the passenger compartment wall on the passenger side.
A second passage for introducing inside air into the second passage (5b),
An air conditioner for a vehicle having an inside air inlet (21) . 9. An upper part of the inside / outside air unit (1)
For introducing outside air into the first passage (5a).
Outside air inlet (22), the outside air inlet (22), and the first inside air inlet (26)
Inside and outside air opening / closing members (25) for opening and closing the first and second passages (5a, 5b).
The rewritable generating an air flow, the rotational axial vertical toward
The first and second fans (6
a, 6b), and the first fan (6a) is emptied downward from above.
The second fan (6
b) sucks air from below to above.
The outside air inlet (22) and the first inside air inlet (2
6) above the first and second fans (6a, 6b)
The inside and outside air unit (1) includes the first and second airflow units.
To the passenger seat side of the fan (6a, 6b)
The outside air inlet (22) and the second fan
A communication path (29) communicating with the suction port (28) of (6b).
The second inside air inlet (21) is provided with the first and second fans.
(6a, 6b) on the passenger seat side to the communication passage (29)
An opening is formed to open the second inside air inlet (21) and the communication passage (29).
Claim: An open / close member (27) for closing.
Item 10. The vehicle air conditioner according to Item 8 . 10. An air conditioning case (3) having two first and second air conditioners.
Partitioning into two passages (5a, 5b), the first passage (5a)
While introducing outside air into the second passage (5b).
Introduce the change in the instrument panel of the vehicle (P)
Inside and outside air unit (1) arranged on the front side of the vehicle
A vehicle air conditioner, wherein the inside / outside air unit (1) has the first
A first inside air inlet for introducing inside air into the passage (5a)
(26) is provided, and the inside / outside air unit (1) is provided with the inside / outside air unit.
(1) a portion below the first inside air inlet (26)
A second inside air guide for introducing inside air into the second passage (5b).
An inlet (21) is provided and arranged so as to be aligned with the inside / outside air unit (1) in the vehicle width direction.
A temperature control unit (10) for adjusting the temperature of air
A first, second fan (6a, 6b), said in ambient air Uni
Air in the vehicle width direction at the front part of the vehicle
So that it blows out to the temperature control unit (10).
And the temperature control unit (10) includes the inside / outside air unit.
(1) Air blown from the front side of the vehicle to the rear of the vehicle
And the second inside air inlet (21) is directed toward the driver's seat side.
To open the outside of the passenger seat side of the temperature control unit (10)
An air conditioner for a vehicle, wherein the air conditioner is disposed opposite to (52) . 11. An upper part of the inside / outside air unit (1).
For introducing outside air into the first passage (5a).
Outside air inlet (22), the outside air inlet (22) and the first inside air inlet (26).
And an inside / outside air opening / closing member (25) that opens and closes the first and second fans (6a, 6b).
Air flowing into the vehicle interior in each of the second passages (5a, 5b)
Generates flow and the axis of rotation points up and down
And the first fan (6a) is emptied downward from above.
The second fan (6
b) sucks air from below to above.
The outside air inlet (22) and the first inside air inlet (2
6) above the first and second fans (6a, 6b)
The inside and outside air unit (1) includes the first and second airflow units.
Fan (6a, 6b) and the temperature control unit (10)
The outside air inlet (2
2) and the suction port (28) of the second fan (6b)
A communication path (29) for communication is provided, and the second inside air introduction port (21) is connected to the communication path (29).
An opening is formed to open the second inside air inlet (21) and the communication passage (29).
Claim: An open / close member (27) for closing.
Item 11. The vehicle air conditioner according to item 10 .