JP2002087042A - Vehicular air-conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular air-conditioning system that can maximize the opening area of an outside air inlet without too small an intake air quantity from an inside air inlet. SOLUTION: The number of filter members 7 through which cabin outside air taken in from an outside air inlet 4 passes is larger than the number of filter members 7 through which cabin inside air taken in from an inside air inlet 3 passes. The filter members 7 through which the cabin inside air passes can be thus thinned while ensuring a dust collecting capacity for the cabin outside air, so that the pressure loss of the cabin inside air by the filter members 7 can be reduced. Even when the opening area of the outside air inlet 4 is increased and the opening area of the inside air inlet 3 is spatially reduced accordingly, the disadvantage can be precluded that the intake air quantity from the inside air inlet 3 becomes too small.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises an inside air suction port for sucking vehicle interior air into a case, an outside air suction port for sucking vehicle interior air into a case, and a filter member for purifying vehicle interior air and vehicle exterior air. To a vehicle air conditioner.

[0002]

2. Description of the Related Art As a conventional vehicle air conditioner, for example,
The one shown in FIG. 5 is known.

[0003] That is, at the upstream end of the case 100, an inside air inlet 110 for sucking the air in the vehicle compartment into the case 100.
And an outside air suction port 1 for sucking air outside the vehicle compartment into the case 100
20 are formed so as to have substantially the same opening area. The inside air inlet 110 and the outside air inlet 120 are opened and closed by an inside air door 130 and an outside air door 140, respectively. Further, a filter member 150 is formed between both the suction ports 110 and 120 and the fan 160 for purifying the vehicle interior air sucked at the inside air suction port 110 and the vehicle interior air sucked at the outside air suction port 110. The space 170 is provided in

[0004]

In the above prior art, the vehicle interior air and the vehicle exterior air pass through the same filter member 150, so that the air outside the vehicle interior is generally more than the air inside the vehicle. Because the amount of dust is large, the filter member 15
The thickness in the air passage direction at 0 is adjusted to the dust collecting capacity of the air outside the vehicle compartment. Therefore, the filter member 150 has an unnecessarily high ventilation resistance to the vehicle interior air sucked from the inside air suction port 110.

In general, the amount of air blown from the outside air suction port 120 is smaller than the amount of air blown from the inside air suction port 110. Therefore, there is a need to increase the opening area of the outside air suction port 120 as much as possible. However, in the above-described conventional technology, if the installation space of the case 100 on the vehicle side does not change, simply increasing the opening area of the outside air suction port 120 can be achieved. Is the inside air inlet 11 for that space.
It is necessary to reduce the opening area of 0.

[0006] However, in the above prior art, when the opening area of the inside air suction port 110 is reduced, the presence of the filter member 150 having an unnecessarily high ventilation resistance to the vehicle interior air sucked from the inside air suction port 110 occurs. In addition, a problem arises in that the amount of air blown from the inside air suction port 110 becomes too small.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide an air conditioner for a vehicle that can increase the opening area of an outside air intake as much as possible without reducing the amount of intake air from an inside air intake.

[0008]

According to the present invention, in order to achieve the above object, a filter member has a capability of purifying vehicle interior air sucked from an inside air intake port by purifying a vehicle exterior air sucked from an outside air intake port. It is made by paying attention to the point that it is not necessary as much as the ability to perform, and the following technical means are used.

That is, according to the first aspect of the present invention, the filter member (7, 12, 13, 1) through which the air outside the vehicle compartment passes.
4) The number of filters is larger than the number of filter members (7, 11, 14) through which vehicle interior air passes.

Further, the invention according to claim 2 is characterized in that the filter member (12) through which the air outside the vehicle compartment passes is thicker than the filter member (11) through which the air inside the vehicle compartment passes.

According to these technical means, the filter members (7, 11, and 14) through which the air inside the vehicle passes while securing the dust collecting ability of the filter members (7, 12, 13, and 14) through which the air outside the vehicle room passes. 14) can be made thinner,
Compared with the prior art, in which vehicle interior air passes through a filter member having a thickness corresponding to the dust collection capacity of the vehicle exterior air, the vehicle interior air filter members (7, 11, 14)
Pressure loss can be reduced. As a result, even if the opening area of the outside air suction port (4) is increased and the opening area of the inside air suction port (3) is reduced by the space, the intake air volume from the inside air suction port (3) becomes too small. Can be eliminated.

According to the third aspect of the present invention, the filter member (11, 12, 13, 14) is detachably provided in the case (2), and the filter member (11) through which the outside air passes. 12, 13, 14) are characterized by having dust filters (12a, 13) provided separately from the filter members (11, 14) through which the vehicle interior air passes to remove the air.

Thus, the dust filter (12a, 13) through which the air outside the vehicle passes and the filter member (11, 11) through which the air inside the vehicle, which is relatively dirty, pass more slowly.
14) can be exchanged separately, so that maintainability can be improved.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) A first embodiment in which the present invention is applied to an automotive air conditioner will be described below with reference to FIG.

First, the configuration of the blower unit 1 will be described.
This will be described with reference to FIG.

As shown in FIG. 1, the blower unit 1 includes a blower case 2 forming an air passage into a vehicle interior. At the upstream end of the blower case 2, an inside air suction port 3 for sucking air inside the vehicle compartment and an outside air suction port 4 for sucking air outside the vehicle compartment are formed. It is opened and closed by the door 6. Further, in the blower case 2, there are provided a filter member 7 for purifying the air sucked from the inlets 3 and 4 where the inside and outside air doors 5 and 6 are opened, and a fan 8 as a blowing means for generating an air flow. ing.

Although not shown, an evaporator as a cooling heat exchanger for cooling the air, a heater core as a heating heat exchanger for heating the air, and a temperature adjusting means are provided on the downstream side of the air from the blower unit 1, respectively. , An air mix door, a plurality of air outlets for blowing air adjusted to a desired temperature by the air mix door toward a predetermined portion in the vehicle compartment, an air outlet mode door for opening and closing each air outlet, and the like.

The outside air suction port 4 is formed such that its opening area is larger than the opening area of the inside air suction port 3.

The inside air door 5 and the outside air door 6 are connected to the inside air inlet 3.
And an outside air mode in which the inside air suction port 3 is closed by opening the outside air suction port 4 and an outside air mode in which the inside air suction port 3 is closed and the outside air suction port 4 is opened. The inside air door 5 and the outside air door 6 are each driven by a servo motor (not shown) as a driving unit. In this embodiment, the inside / outside air opening / closing means in claims 1 and 2 is constituted by the inside / outside door 5 and the outside air door 6.

The filter member 7 is a dust filter made of, for example, a filter material made of non-woven fabric, and captures dust contained in the air. The filter member 7 is provided in a space 9 formed between the suction ports 3 and 4 and the fan 8 in a state where the filter member 7 is bent in a substantially rectangular shape in cross section.

When the filter member 7 is installed, the vehicle interior air sucked from the inside air suction port 3 passes through the filter member 7 once.
The outside air that is sucked in from the vehicle passes through the filter member 7 twice. That is, the number of filter members 7 through which the air outside the vehicle room passes is set to be larger than the number of filter members 7 through which the air inside the vehicle room passes. It should be noted that the thickness of the filter member 7 through which the air outside the vehicle compartment passes is thicker than the thickness of the filter member 7 through which the air inside the vehicle compartment passes.

The fan 8 is a well-known centrifugal fan, and has a blower motor 10 as a driving means.
Driven by

Next, the operation of the above-described configuration will be described for each of the inside and outside air modes.

(Inside Air Mode) In the inside air mode, the inside air door 5 opens the inside air suction port 3 and the outside air door 6 closes the outside air suction port 4. When the fan 8 operates in this state, the vehicle interior air is sucked into the blower case 2 from the inside air suction port 3. The vehicle interior air sucked from the inside air suction port 3 passes through the filter member 7 once as shown by the arrow A, and is dust-removed. The air thus removed is adjusted to a desired temperature by the evaporator, the heater core, and the air mix door, and is then blown into the passenger compartment from the air outlet opened by the air blow mode door. .

(Outside Air Mode) In the outside air mode, the inside air door 5 closes the inside air suction port 3 and the outside air door 6 opens the outside air suction port 4. When the fan 8 operates in this state, the air outside the vehicle compartment is sucked into the blower case 2 from the outside air suction port 4. The vehicle outside air sucked from the outside air suction port 4 passes through the filter member 7 twice as shown by the arrow B, and is dust-removed. The air thus removed is adjusted to a desired temperature in the same manner as in the inside air mode, and is blown into the passenger compartment from the outlet port opened by the outlet mode door.

According to the present embodiment described above, the number of filter members 7 through which the outside air of the vehicle room sucked in from the outside air suction port 4 passes is changed to the number of the filter members 7 through which the inside air of the vehicle room sucked through the inside air suction port 3 passes. The number of is increased.

Thus, the filter member 7 through which the vehicle interior air passes can be made thinner in a state where the dust collection capability of the vehicle exterior air is ensured.
Pressure loss can be reduced. As a result, even if the opening area of the outside air suction port 4 is increased and the opening area of the inside air suction port 3 is reduced by the space, the problem that the intake air volume from the inside air suction port 3 becomes too small is solved. it can.

(Second Embodiment) Hereinafter, a second embodiment of the present invention will be described with reference to FIG.

In this embodiment, as shown in FIG. 2, an inside air filter 11 through which vehicle interior air sucked from the inside air intake port 3 passes, and an outside air filter 12 through which vehicle interior air sucked through the outside air intake port 4 passes. Are provided separately. While two outside air filters 12 are provided, only one inside air filter 11 is provided.

The inside air filter 11 is a deodorizing filter for deodorizing odor components in the air, and is made of activated carbon in the present embodiment. The inside air filter 11 is provided directly downstream of the inside air suction port 3 so as to be detachable from the blower case 2.

The outside air filter 12 is provided immediately downstream of the outside air suction port 4 and removes dust in the air.
a, a deodorizing filter 12b provided downstream of the dust removing filter 12a to deodorize odor components in the air. The dust filter 12a is made of a filter material such as a nonwoven fabric as in the first embodiment, and the deodorizing filter 12b is made of activated carbon as in the inside air filter 11.

In the outside air filter 12, a dust filter 12a and a deodorizing filter 12b are separately detachable from the blower case 2, respectively.

The thickness of the outside air filter 12 (the sum of the thickness of the dust filter 12a and the thickness of the deodorizing filter 12b) is larger than the thickness of the inside air filter 11.

According to this embodiment, the same effects as those of the first embodiment can be obtained, and the dust removal filter 12a of the outside air filter 12 and the deodorization filter 12 of the inside air filter 11 and the outside air filter 12 that are relatively slower in contamination than this.
Since b and b can be exchanged separately, maintainability can be improved.

(Third Embodiment) A third embodiment of the present invention will be described below with reference to FIG.

In this embodiment, as shown in FIG. 3, the filter member 7 is composed of a dust filter 13 through which the outside air of the vehicle sucked from the outside air suction port 4 passes, the inside air of the vehicle sucked through the inside air suction port 3, and The vehicle comprises a deodorizing filter 14 through which air outside the vehicle room that has passed through the dust removing filter 13 passes. It should be noted that the filters 13 and 14 through which the air outside the vehicle room passes are thicker than the filters 14 through which the air inside the vehicle room passes by the thickness of the dust filter 13.

The dust filter 13 and the deodorizing filter 14 are
Each can be separately detached from the blower case 2.

According to the present embodiment, since the internal air filter 11 and the deodorizing filter 12b in the external air filter 12 are integrated with the second embodiment,
The replacement work of the deodorizing filter 14 becomes easy.

(Other Embodiments) In the first embodiment,
Although the filter member 7 is a dust filter, it may be a deodorizing filter. In the second and third embodiments,
All of the filters 11 to 14 may be dust filters or all may be deodorizing filters.

In the first embodiment, the same material is used for the filter member 7 through which the outside air of the vehicle passes and the filter member 7 through which the air inside the vehicle passes. However, different materials may be used.

Further, in each of the above embodiments, the number of filter members through which the air outside the vehicle compartment passes is made larger than the number of filter members through which the air inside the vehicle compartment passes. Even if the number of the outside air passing is the same, the effect of the present invention can be obtained if the filter member through which the outside air passes is made thicker than the filter member through which the inside air passes.

In the above embodiments, only the inside air mode and the outside air mode are set, but in addition, the semi-inside air mode may be set.

Further, in the third embodiment, a configuration shown in FIG. 4 may be adopted.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating a configuration of a blower unit 1 according to a first embodiment of the present invention.

FIG. 2 is a diagram corresponding to FIG. 1 in a second embodiment of the present invention.

FIG. 3 is a diagram corresponding to FIG. 1 in a third embodiment of the present invention.

FIG. 4 is a diagram corresponding to FIG. 1 in another embodiment of the present invention.

FIG. 5 is a diagram corresponding to FIG. 1 in the prior art.

[Explanation of symbols]

 2 ... Blower case (case) 3 ... Inside air suction port, 4 ... Outside air suction port, 5 ... Inside air door (inside / outside air opening / closing means), 6 ... Outside air door (inside / outside air opening / closing means), 7 ... Filter member, 8 ... Fan ( 11) Inside air filter (filter member), 12 ... outside air filter (filter member), 12a ... dust removal filter, 13 ... dust removal filter (filter member), 14 ... deodorizing filter (filter member).

Claims (3)

[Claims] 1. A case (2) forming an air passage into a vehicle interior.
An inside air suction port (3) that sucks vehicle interior air into the case (2); an outside air suction port (4) that sucks vehicle interior air into the case (2); and the two suction ports (3, 4). ), An air opening / closing means (5) for opening / closing air, a blowing means (8) for generating an air flow in the case (2), and a filter member (7, 11) for purifying the vehicle interior air and the vehicle exterior air. , 12, 13, 14), the filter member (7, 12, 1, 1) through which the vehicle exterior air passes.
The air conditioner for a vehicle, wherein the number of the filter members (3, 14) is larger than the number of the filter members (7, 11, 14) through which the vehicle interior air passes. 2. A case (2) forming an air passage into a vehicle interior.
An inside air suction port (3) that sucks vehicle interior air into the case (2); an outside air suction port (4) that sucks vehicle interior air into the case (2); and the two suction ports (3, 4). ), An air opening / closing means (5) for opening / closing air, a blowing means (8) for generating an air flow in the case (2), and a filter member (11, 12) for purifying the vehicle interior air and the vehicle exterior air. ), Wherein the filter member (12) through which the vehicle exterior air passes is thicker than the filter member (11) through which the vehicle interior air passes. . 3. The filter member (11, 12, 13,
14) is provided in the case (2) in a detachable manner, and the filter member (12, 13,
14) is a filter member (1) through which the vehicle interior air passes.
The vehicle air conditioner according to claim 1 or 2, further comprising a dust filter (12a, 13) provided separately from (1, 14) to remove air.