JP3704862B2 - Air conditioner for vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle air conditioner that performs air conditioning by introducing outside air and inside air.
[0002]
[Prior art]
Conventionally, in a vehicle air conditioner that houses a blower in a case having an outside air introduction part and an inside air introduction part, when the outside air contains an odor component, such as when driving in an urban area, the outside air to the room is switched to the inside air mode. (Odor component) was prevented from entering. However, in this inside air mode, there is a problem that air that becomes dirty due to carbon dioxide or the like exhaled by the occupant is trapped in the room, which impairs the comfort of the occupant.
[0003]
On the other hand, Japanese Patent Laid-Open No. 3-189229 proposes that the outside air introduction part is divided into a first outside air introduction part and a second outside air introduction part, and a deodorizing filter is provided in the first outside air introduction part. Has been. And when outside air contains an odor component, outside air is introduce | transduced from a 1st outside air introduction part, and the deodorized outside air is blown out indoors. In this way, passenger comfort is maintained even when the outside air contains an odor component.
[0004]
In addition, when introducing the outside air from the first outside air introduction section, the deodorizing filter provided in this introduction section has a very large ventilation resistance. Therefore, the ventilation capacity of the blower is improved by the amount of the ventilation resistance, and the blowout into the room is performed. The air volume was kept constant.
[0005]
[Problems to be solved by the invention]
However, there is a problem that the power consumption increases by the amount that improves the blowing capacity of the blower.
The present invention has been made in view of the above problems, and an object of the present invention is to clean indoor air while reducing the necessity of improving the blowing capacity when the outside air contains an odor component.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, according to the first to fifth aspects of the present invention, the case (11, 173, 3) includes a first outside air introduction portion (121), a second outside air introduction portion (12), and an inside air introduction. A deodorizing filter (15) is formed in the first outside air introduction part (121), the inside air is introduced from the inside air introduction part (13), and the deodorizing filter is introduced from the first outside air introduction part (121). The present invention is characterized in that a clean outside air mixing mode for introducing clean outside air that has passed through (15) is executed.
[0007]
According to such a configuration, in the clean outside air mixing mode, clean outside air can be introduced in addition to the inside air, so that dirty air is not trapped in the room and the inside air can be cleaned. Moreover, according to this mode, the amount of outside air passing through the deodorizing filter (15) can be reduced as compared with the case where only clean outside air is introduced. Therefore, the fall of the ventilation volume can be suppressed by this amount, the necessity to improve the blowing capacity of the blower can be reduced, and the improvement of power consumption can be suppressed. Moreover, the lifetime of the deodorizing filter (15) can be extended by the amount of reduction in the amount of outside air passing through the deodorizing filter (15), the number of replacements of the deodorizing filter (15) can be reduced, and maintainability can be improved.
[0008]
In the invention according to claim 2, since the opening area of the first outside air introduction part (121) is smaller than the opening areas of the second outside air introduction part (12) and the inside air introduction part (13), When the outside air and the inside air are simultaneously sucked from the first outside air introduction part (121) and the inside air introduction part (13) by the blower, the amount of outside air passing through the deodorizing filter (15) is smaller than half of the total intake air, and the deodorizing filter ( It is possible to effectively suppress a reduction in the amount of air blown by passing through 15).
[0009]
Further, in the invention described in claim 4, when the inside air is introduced, when the concentration of carbon dioxide in the inside air is low, the whole inside air mode for introducing only the inside air from the inside air introduction part (13) is executed, and the carbon dioxide When the concentration is high, the clean outside air mixing mode is executed. Therefore, only when necessary (when the carbon dioxide concentration is high), outside air is introduced in addition to the inside air, that is, the deodorizing filter (15) is used. The life of the deodorizing filter (15) can be extended. In addition, when the carbon dioxide concentration is low, cooling and heating can be effectively performed by introducing only the inside air having a small cooling load or heating load.
[0010]
Further, in the invention according to claim 5, when the outside air is introduced, when the odor component concentration in the outside air is low, the whole outside air mode for introducing only the outside air from the second outside air introduction section (12) is executed, When the odor component concentration is high, the clean outside air mixing mode is executed. Therefore, the deodorization filter (15) is used only when necessary (when the odor component concentration is high), and the life of the deodorization filter (15) is increased. Can be long. Moreover, when the odor component concentration is low, the comfort of the passenger and the anti-fogging property of the window glass can be better maintained by introducing only the outside air having a low carbon dioxide concentration and humidity.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments shown in the drawings will be described below.
(First embodiment)
FIG. 1 is a schematic cross-sectional view of a vehicle air conditioner 100. As shown in FIG. 1, the vehicle air conditioner 100 includes an air conditioning unit 2 that performs air conditioning, and a blower unit 1 that introduces air into the air conditioning unit 2. The blower unit 1 is disposed in the lower part of the vehicle interior instrument panel, in front of the passenger seat (in this embodiment, applied to the right-hand drive vehicle, on the left side in the vehicle width direction), and the air conditioning unit 2 includes the vehicle interior instrument. In the lower part of the board, it is arranged at the approximate center in the vehicle width direction.
[0012]
As is well known, the blower unit 1 is made of a resin (for example, polypropylene) inside / outside air switching box 11 that switches and introduces air inside or outside the vehicle interior, and a blower that blows air introduced through the inside / outside air switching box 11 ( Air blowing means) 17.
The inside / outside air switching box 11 is formed with an outside air introduction port (outside air introduction portion) 12 and an inside air introduction port (inside air introduction portion) 13, and these outside air introduction port (outside air introduction portion) 12 and inside air introduction port (inside air introduction portion). An inside / outside air switching door 14, which is a plate door that opens and closes with 13, is installed to be rotatable between a solid line position in FIG. 1 and a one-dot chain line position in FIG. 1. The outside air introduction port 12 and the inside air introduction port 13 have substantially the same opening area.
[0013]
The outside air introduction port 12 is provided with a resin outside air introduction duct (outside air introduction portion) 120 that guides outside air from an outside air intake hole (not shown) on the front surface of the vehicle to the outside air introduction port 12. The outside air introduction duct 120 is provided with a resin-made outside air introduction duct 121 that guides outside air in the duct 120 to the downstream side of the air inlets 12 and 13, in this embodiment, just before the blower 17. Yes. The outside air introduction duct 121 is provided with an opening / closing door (opening / closing means) 122 formed of a resin plate door that opens and closes the duct 121.
[0014]
The opening area of the outside air introduction duct 121 is about 20% of the opening area of the outside air introduction port 12 and the inside air introduction port 13. Therefore, in the clean outside air mixing mode, which will be described later, the inside air and the clean outside air are blown so that the inside air: outside air = 9: 1 (in other words, the outside air is introduced at a smaller ratio than the inside air). 17 is sucked into.
In the outside air introduction duct 121, a deodorizing filter 15 capable of deodorizing odor components in the outside air (for example, diesel exhaust gas odor such as acetaldehyde) and a dust removing filter 160 capable of removing dust in the outside air are arranged on the entire surface. It is installed. The deodorizing filter 15 is made of a deodorizing material such as activated carbon formed into a plate shape with a thickness of about 15 mm, for example. The dust removal filter 160 is a urethane foam formed into a plate shape with a thickness of about 15 mm, for example. Consists of. And the deodorizing filter 15 and the dust removal filter 160 are integrated.
[0015]
The inside / outside air switching box 11 is provided with a dust removal filter 16 that can remove outside air and dust in the inside air. The dust filter 16 is made by processing a paper filter. Here, the deodorizing filter 15 having the above-described configuration has a very large ventilation resistance (for example, about 1.5 times) as compared with the dust removing filters 16 and 160.
[0016]
The blower 17 includes a centrifugal multiblade fan (blower fan) 171, an electric motor 172 that drives the fan 171, and a resin scroll casing 173 that houses the fan 171. The scroll casing 173 is formed with a bell mouth-shaped suction port 173 a that guides the outside air from the outside air introduction port 12 and the outside air introduction duct 121 and the inside air from the inside air introduction port 13 to the fan 172.
[0017]
Reference numeral 3 denotes a resin air-conditioning case, one end of which communicates with the outlet of the scroll casing 173 of the blower unit 1, and the blow-out mode switching unit 25 is formed at the other end. An evaporator 21 as a cooling heat exchanger for cooling the air is disposed on the most upstream side of the air in the air conditioning case 3, and a heating heat exchanger for heating the air is disposed on the downstream side of the evaporator 21. The heater core 22 is disposed. The evaporator 21 and the heater core 22 are disposed so as to be substantially perpendicular to the air flow.
[0018]
The evaporator 21 is a cooling heat exchanger that constitutes a well-known refrigeration cycle together with a compressor, a condenser, a liquid receiver, and a decompressor (not shown), and dehumidifies and cools the air in the air conditioning case 3. The compressor is driven by an automobile engine via an electromagnetic clutch (not shown). The heater core 22 is a heating heat exchanger that uses cooling water of the automobile engine as a heat source, and reheats the cold air cooled by the evaporator 21.
[0019]
In the air conditioning case 3, a bypass passage 23 that bypasses the heater core 22 is formed adjacent to the heater core 22. On the air downstream side of the evaporator 21 and on the air upstream side of the heater core 22, an air mix door 24 made of a resin plate door is disposed. The door 24 can be rotated between a solid line position in FIG. 1 and an alternate long and short dash line position in FIG. 1. The door 24 adjusts the ratio of the amount of air sent to the heater core 22 and the bypass passage 23 to The air temperature is adjusted.
[0020]
Here, the blowing mode switching unit 25 described above is for switching the blowing mode into the vehicle interior, and is provided at a center face (upper) air outlet (not shown) that blows air toward the passenger's head in the vehicle interior. A center face air blowing portion 26 that communicates, a side face air blowing portion (not shown) that communicates with a side face air outlet (not shown), and a foot that blows air toward the passenger's feet in the passenger compartment ( It has a foot air outlet 27 communicating with a foot outlet (not shown) and a defroster air outlet 28 communicating with a defroster outlet (not shown) for blowing air toward the window glass.
[0021]
Inside the blowing mode switching unit 25, open / close doors 260, 270 and 280 made of resin plate doors for opening and closing the respective blow units 26, 27 and 28 are located at the solid line position in FIG. 1 and the one-dot chain line position in FIG. It is installed so that it can be rotated between. The side face air blowing section is always open, and a grill (not shown) that is opened and closed by a passenger's manual operation is provided in the vicinity of the side face outlet.
[0022]
The inside / outside air switching door 14, the opening / closing door 122, the air mixing door 24, and the opening / closing doors 260, 270, 280 described above are integrally provided with the rotation shafts 14 a, 122 a, 24 a, 26 a, 27 a, 28 a. Is rotatably fitted in a rotation shaft support recess (not shown) formed in the case 3.
In addition, the instrument panel provided in the front of the passenger compartment has an operation unit for an air conditioner. The operation unit includes a blow mode switching switch, a temperature setting switch, an inside / outside air switching switch, and a fan for switching the air flow rate of the blower fan. An air conditioner switch is provided for switching the operation of the switch and evaporator. These switches are selected and operated by a passenger.
[0023]
The blow mode selector switch includes a foot mode switch that instructs the foot mode to blow air-conditioned air from the foot outlet, and a bi-level mode switch that instructs the bi-level mode to blow almost the same amount of air-conditioned air from the face outlet and foot outlet. , Face mode switch that directs the face mode that blows conditioned air from the face air outlet, Foot def mode switch that instructs the foot def mode that blows almost the same amount of air conditioned air from the foot air outlet and the defroster air outlet, Air conditioning from the defroster air outlet There is a defroster mode switch that indicates the defroster mode that blows the wind.
[0024]
The inside / outside air changeover switch is provided with an inside air introduction switch for instructing an inside air introduction mode for sucking in the inside air and an outside air introduction switch for instructing an outside air introduction mode for sucking in the outside air.
Then, in response to the various signals of the switch, the rotation positions of the doors 14, 122, 24, 260, 270, 280, the voltage of the electric motor 172, the operation of the compressor is stopped, and the cooling water is interrupted. The opening and closing of the water valve is controlled.
[0025]
Specifically, the doors 260, 270, and 280 are switched to predetermined rotation positions by switching the blow mode switching switch, and the rotation position of the air mix door 24 (in other words, by switching the temperature setting switch, in other words, The air volume ratio sent to the heater core 22 and the bypass passage 23) is switched. Moreover, the rotation position of the inside / outside air switching door 14 (in other words, opening / closing of the inside air introduction port 13 and the outside air introduction port 12) is switched by switching the inside / outside air switching switch.
[0026]
In addition, carbon dioxide (CO ₂ ) CO to detect concentration ₂ A sensor 30 and an odor sensor 31 for detecting the odor component concentration in the outside air are provided. Then, the detection signals of these sensors 30 and 31 are input to the electric control device 32, and the electric control device 32 automatically controls the rotational positions of the inside / outside air switching door 14 and the open / close door 122 based on these signals.
[0027]
The operation of the inside / outside air switching door 14 and the opening / closing door 122 will be described below. First, the case where the inside air introduction mode switch is instructed by the occupant during cool down (immediately after the start of cooling) or warm up (immediately after the start of heating) will be described.
▲ 1 ▼ CO ₂ When the concentration is not less than a predetermined value (for example, 0.5%), the inside air inlet 13 is fully opened at the door 14, the outside air inlet 12 is fully closed, and the outside air introduction duct 121 is fully opened at the door 122. (Clean outside air mixing mode). As a result, inside air is introduced into the air conditioning case 3 from the inside air introduction port 13, and part of the clean outside air that has been purified by passing through the deodorizing filter 15 in the outside air introduction duct 121 is introduced into the vehicle interior. Inside air and clean outside air are blown out.
[0028]
The amount of outside air introduced in this clean outside air mixing mode is set so as not to increase the carbon dioxide concentration of inside air when the maximum number of passengers get in the vehicle interior. In this embodiment, inside air: outside air = 9: 1. It is set to become. In addition, the said predetermined value is a carbon dioxide concentration of the grade which a passenger | crew does not feel uncomfortable.
▲ 2 ▼ CO ₂ When the concentration is smaller than the predetermined value, the inside air inlet 13 is fully opened at the door 14, the outside air inlet 12 is fully closed, and the outside air introduction duct 121 is fully closed at the door 122 (all inside air mode). Thereby, only the inside air is introduced into the air conditioning case 3, and only the inside air is blown out into the vehicle interior.
[0029]
Below, the effect which this embodiment shows at the time of introduction of inside air is described.
First, in the clean outside air mixing mode, clean outside air can be introduced in addition to the inside air, so that dirty air does not stay in the room and the inside air can be cleaned. Further, according to this mode, the amount of outside air passing through the deodorizing filter 15 can be reduced as compared with the case where only clean outside air is introduced. Therefore, the fall of the ventilation volume can be suppressed by this amount, the necessity to improve the blowing capacity of the blower can be reduced, and the improvement of power consumption can be suppressed. In addition, the life of the deodorizing filter 15 can be extended by the amount of reduction in the amount of outside air that passes through the deodorizing filter 15.
[0030]
Moreover, since the deodorizing filter 15 is used only when the carbon dioxide concentration is high, the life of the deodorizing filter 15 can be extended.
Moreover, in this embodiment, in clean outside air mixing mode, since clean outside air is introduced at a smaller rate than inside air, a decrease in the amount of blown air does not matter so much and it is necessary to improve the blowing capacity of the blower. Absent. In addition, the life of the deodorizing filter 15 can be effectively lengthened.
[0031]
In addition, when the carbon dioxide concentration is low, cooling and heating can be effectively performed by introducing only the inside air having a small cooling load or heating load.
Further, since the introduced air (inside air) does not pass through the deodorizing filter 15 in the all inside air mode, the amount of air blown into the vehicle interior can be increased by this amount compared to the clean outside air mixing mode.
[0032]
Next, the case where the outside air introduction mode switch is instructed by the occupant will be described.
(1) When the odor component concentration is a predetermined value (for example, 5 ppd) or more, the inside air inlet 13 is fully opened at the door 14, the outside air inlet 12 is fully closed, and the outside air introduction duct 121 is closed at the door 122. Fully open (clean air mixing mode). (2) When the odor component concentration is smaller than the predetermined value, the inside air inlet 13 is fully closed at the door 14, the outside air inlet 12 is fully opened, and the outside air introduction duct 121 is fully closed at the door 122 (all Outside air mode).
[0033]
As a result, when the outside air contains odor, the outside air purified by the deodorizing filter 15 is introduced. When the outside air does not contain odor, the deodorizing filter 15 is not provided (the ventilation resistance is small) from the outside air inlet 12. By introducing the outside air, the outside air passes through the deodorizing filter 15 only when necessary. As a result, the life of the deodorizing filter 15 can be extended.
[0034]
Further, since the introduced air (outside air) does not pass through the deodorizing filter 15 in the all outside air mode, the amount of air blown into the room can be increased by this amount compared to the clean outside air mode.
(Second Embodiment)
The present embodiment is a modification of the blower unit 1 in the first embodiment. Specifically, as shown in FIG. 2, the fan 171 of the blower 17 includes a first fan 171a and a second fan 171b. It is divided into and. The scroll casing 173 is provided with first and second suction ports 173a and 173b corresponding to the first and second fans 171a and 171b.
[0035]
The inside / outside air switching box 110 is also provided on the second suction port 173b side. The inside / outside air switching box 110 is formed with an inside air introduction port 130 and an outside air introduction port 123, and the outside air introduction port 121 is connected to the tip of the outside air introduction duct 121. That is, outside air deodorized by the deodorizing filter 15 is introduced from the outside air introduction port 123.
[0036]
Also, an inside / outside air switching door 140, which is a plate door that opens and closes the outside air introduction port 123 and the inside air introduction port 130, is installed to be rotatable between a solid line position in FIG. 3 and a one-dot chain line position in FIG. Yes. The inside / outside air switching door 140 also serves as an opening / closing door that opens and closes the first outside air introduction section.
The operation of the inside / outside air switching doors 14 and 140 and the open / close door 122 will be described below.
[0037]
First, a case where the inside air introduction mode switch is instructed by the occupant will be described. ▲ 1 ▼ CO ₂ When the concentration is equal to or higher than a predetermined value, the inside air inlet 13 is fully opened at the door 14, the outside air inlet 12 is fully closed, the inside air inlet 130 is fully closed at the door 140, and the outside air inlet 123 is opened. The door 122 is fully opened and the outside air introduction duct 121 is fully opened at the door 122 (clean outside air mixing mode). ▲ 2 ▼ CO ₂ When the concentration is lower than the predetermined value, the inside air inlet 13 is fully opened at the door 14, the outside air inlet 12 is fully closed, the inside air inlet 130 is fully opened at the door 140, and the outside air inlet 123 is fully closed. Then, the outside air introduction duct 121 is fully closed at the door 122 (entire inside air mode).
[0038]
Next, the case where the outside air introduction mode switch is instructed by the occupant will be described. (1) When the odor component concentration is a predetermined value or more, the inside air inlet 13 is fully opened at the door 14, the outside air inlet 12 is fully closed, and the inside air inlet 130 is fully closed at the door 140. The outside air introduction port 123 is fully opened, and the outside air introduction duct 121 is fully opened at the door 122 (clean outside air mixing mode). (2) When the odor component concentration is smaller than the predetermined value, the inside air inlet 13 is fully closed at the door 14, the outside air inlet 12 is fully opened, and the inside air inlet 130 is fully closed at the door 140. The introduction port 123 is fully opened, and the outside air introduction duct 121 is fully closed by the door 122 (full outside air mode).
[0039]
According to the present embodiment, the same effects as those of the first embodiment described above can be obtained, and the following effects can be obtained. That is, in the inside air introduction mode and the clean outside air mixing mode, the outside air and the inside air are sucked from both sides of the first and second fans 171a and 171b, so that the air flows to the downstream side of the blower 17 as compared with the first embodiment. The amount of blast can be increased. In particular, in the clean outside air mixing mode, the inside air from the inside air introduction port 13 is sucked by the first fan 171a and the outside air from the outside air introduction duct 121 is sucked by the second fan 171b. However, the outside air from the outside air introduction duct 121 can be reliably introduced into the case 3.
[0040]
(Third embodiment)
The vehicle air conditioner of this embodiment shown in FIGS. 3 and 4 has the blower 17 and the scroll casing 173 of the second embodiment, and the inside of the scroll casing 173 and the air conditioning casing 3 is divided into the partition plate 10. The first air passage 101 and the second air passage 102 are partitioned.
[0041]
Dust removal filters 161 and 162 are provided on the entire surface of the outside air introduction port 12 and the inside air introduction port 13 of the inside / outside air switching box 11. Further, a scroll casing 173 is accommodated in the inside / outside air switching box 11, and between the inside / outside air switching box 11 and the first and second suction ports 173a, 173b of the scroll casing 173, the outside air and Inside / outside air switching doors (open / close doors) 141, 142, 143, 144 for switching and introducing the inside air are provided.
[0042]
Note that the door 141 and the door 143 move simultaneously, and the doors 141 and 143 switch between the amount of inside air and the amount of outside air sucked into the first suction port 173a. Further, the door 142 and the door 144 also move simultaneously, and the doors 142 and 144 switch between the amount of the inside air and the amount of the outside air sucked into the second suction port 173b. The front end of the outside air introduction duct 121 communicates with the upstream position of the inside / outside air switching doors 142 and 144 downstream of the inside air introduction port 13.
[0043]
The evaporator 21 is disposed so as to block the entire surfaces of the first and second air passages 101 and 102, and the heater core 22 is disposed so as to block about half of the first and second air passages 101 and 102. ing. Bypass passages 231 and 232 are formed adjacent to the heater core 22, and air mix doors 241 and 242 are also disposed in the first and second air passages 101 and 102, respectively.
[0044]
According to the vehicle air conditioner having such a structure, outside air is introduced into the first air passage 101 and blown out from the defroster air blowing portion 28 or the face air blowing portion 26, and the inside air is blown into the second air passage 102. By introducing and blowing from the foot air blowing portion 27, it is possible to reduce the heating load while suppressing fogging of the windshield.
[0045]
Below, the action | operation of each said door 141-144,122 is demonstrated.
First, the case where the carbon dioxide concentration is smaller than the predetermined value and the odor component concentration is smaller than the predetermined value will be described. At this time, either the all-air mode (in other words, the doors 141, 143, the doors 142, 144 are in the solid line position in FIG. 3 and the door 122 is in the one-dot chain line position in FIG. 3) or the all-out-air mode ( In other words, the doors 141 and 143, the doors 142 and 144, and the door 122 are in the dot-dash line position in FIG. 3 or the inside / outside air mode (in other words, the doors 141 and 143 are in the solid line position in FIG. 3). , Doors 142, 144 and door 122 are in the position of the one-dot chain line in FIG.
[0046]
When the carbon dioxide concentration becomes a predetermined value or more during execution of the all-in-air mode, the clean outside air mixing mode (in other words, the doors 141, 143, the doors 142, 144, and the door 122 are shown in FIG. 3). At the solid line position) is selected. In addition, when the inside / outside air mode or the all outside air mode is executed and the odor component concentration becomes a predetermined value or more, the above-described clean outside air mixing mode is selected.
[0047]
In the present embodiment, only the temperature setting device for setting the desired cabin temperature is provided in the operation section of the instrument panel, and the electric control device 32 described above has detection signals from the sensors 30 and 31. In addition, various signals such as room temperature, outside air temperature, amount of solar radiation, evaporator blowout air temperature, engine cooling water temperature, and the like are input. Based on these signals, the electric control device 32 opens the air mix doors 241 and 242, the voltage of the electric motor 172, and the openings ( Control is performed such as the introduction ratio of the inside and outside air) and the opening degree of the doors 26, 27, and 28 (switching of the blowing mode).
[0048]
(Other embodiments)
In the above embodiment, the inside air mode, the outside air mode, and the clean outside air mixing mode are switched based on the detection signals from the sensors 30 and 31, but the above modes are switched at the discretion of the occupant. Also good. For example, even when the carbon dioxide concentration is equal to or higher than a predetermined value, the all-in-air mode may be executed during cool-down or warm-up.
[0049]
Moreover, the deodorizing filter 15 is not limited to the above-described configuration, and may be configured from a layer of silica gel laminated on the urethane foam surface. Moreover, the dust removal filters 16 and 160 are not limited to the above-described configuration, and may be configured from urethane foam or the like.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view of a vehicle air conditioner according to a first embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view of a blower unit according to a second embodiment.
FIG. 3 is a schematic cross-sectional view of a blower unit according to a third embodiment.
FIG. 4 is a schematic cross-sectional view of an air conditioning unit according to a third embodiment.
[Explanation of symbols]
11 ... Inside / outside air switching box (case),
12 ... outside air introduction port (second outside air introduction part),
121 ... Outside air introduction duct (first outside air introduction part), 15 ... Deodorizing filter,
13 ... Inside air introduction port (inside air introduction part), 17 ... Blower (blower means),
3 ... Air-conditioning case (case), 26, 27, 28 ... Air blowing part.

Claims (5)

One end is provided with a first outside air introduction part (121), a second outside air introduction part (12), and an inside air introduction part (13), and the other end is provided with an air blowing part (26, 27, 28) and a case (11, 173, 3),
A blowing means (17) provided in the case (11, 173, 3) for blowing air from the one end to the other end;
A deodorizing filter (15) provided in the first outside air introduction part (121) for deodorizing the outside air flowing in the first outside air introduction part (121);
A clean outside air mixing mode is introduced in which inside air is introduced from the inside air introduction section (13) and clean outside air is introduced from the first outside air introduction section (121) through the deodorizing filter (15). An air conditioner for a vehicle. The vehicle according to claim 1, wherein an opening area of the first outside air introduction part (121) is smaller than opening areas of the second outside air introduction part (12) and the inside air introduction part (13). Air conditioner. Opening and closing means (122, 14) for opening and closing the first outside air introduction part (121), the second outside air introduction part (12), and the inside air introduction part (13),
In the clean outside air mixing mode, the opening / closing means (122, 14) opens the first outside air introduction part (121) and the inside air introduction part (13) and closes the second outside air introduction part (12). The vehicle air conditioner according to claim 1 or 2. When the inside air is introduced, when the carbon dioxide concentration in the inside air is low, the whole inside air mode for introducing only the inside air from the inside air introduction section (13) is executed, and when the carbon dioxide concentration is high, the clean outside air is mixed. The vehicle air conditioner according to any one of claims 1 to 3, wherein a mode is executed. When the outside air is introduced, if the odor component concentration in the outside air is low, the all outside air mode for introducing only the outside air from the second outside air introduction section (12) is executed, and if the odor component concentration is high, the clean air The vehicle air conditioner according to any one of claims 1 to 4, wherein an outside air mixing mode is executed.

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