JP4552360B2 - Air conditioner for vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle air conditioner including an air curtain unit that blows air forming an air curtain between a front seat air conditioning zone and a rear seat air conditioning zone in a vehicle interior.
[0002]
[Prior art]
Conventionally, in a vehicle air conditioner equipped with a front seat air conditioning unit that air-conditions the vehicle interior by blowing conditioned air from the air outlet arranged on the instrument panel to the front seat air conditioning zone, before the passenger is on the front seat only Even in the seated state, the entire vehicle interior is air-conditioned, so the capacity saving of the front seat air-conditioning unit is impaired. Therefore, in the vehicle air conditioners described in JP-A-1-237213 and 5-139143, air that forms an air curtain between the front seat air conditioning zone and the rear seat air conditioning zone is blown in the vertical direction. In the front seat occupant state, the air curtain unit is actuated to prevent airflow from flowing into the rear seat air conditioning zone, thereby reducing the capacity of the front seat air conditioning unit.
[0003]
[Problems to be solved by the invention]
However, in the air conditioner described in the above publication, if the front seat air conditioning unit is operated in the outside air introduction mode when the air curtain unit is operated, the air in the front seat air conditioning zone is activated along with the operation of the blower of the front seat air conditioning unit. Since the pressure is increased, an air pressure difference is generated between the front seat air conditioning zone and the rear seat air conditioning zone. In general, since the exhaust port for discharging the air in the vehicle interior to the outside is provided behind the rear seat air conditioning zone, the air flow in the vehicle interior having the above-described pressure difference is rearward from the front seat air conditioning zone. It becomes the flow toward the seat air conditioning zone. Therefore, since many air-conditioning winds escape from the front to the rear of the air curtain, the effect of reducing the capacity of the front seat air-conditioning unit by the air curtain is reduced.
[0004]
In view of the above points, an object of the present invention is to reduce the air-conditioning wind that escapes from the front of the air curtain to the rear, thereby improving the effect of reducing the capacity of the front seat air-conditioning unit by the air curtain.
[0005]
[Means for Solving the Problems]
  In order to achieve the above object, according to the first aspect of the present invention, an air curtain is provided between the front seat air conditioning zone (10a) on the front seat side and the rear seat air conditioning zone (10b) on the rear seat side in the vehicle interior. FormCar interiorThe air curtain unit (300) for blowing air, the blowing means (120) for blowing conditioned air from the front side of the vehicle toward the front seat air-conditioning zone (10a), and adjusting the introduction ratio of the inside air and the outside air to be conditioned air The front seat air conditioning unit (100) having the inside / outside air switching means (113) for determining whether or not the passenger is in the front seat boarding state where the passenger is in only the front seat air conditioning zone (10a) in the passenger compartment. Boarding state determination means (S71),
  When the boarding state determination means (S71) determines the front seat boarding state, the air curtain unit (300) is operated and the inside / outside air switching means (113) is maintained in at least the inside air introduction mode for introducing the inside air.And
  Further, the air curtain unit (300) includes a casing (310) including a blower fan (320) and a blowout duct that is connected to the casing (310) and has a blowout opening (341) that blows air into the vehicle interior. (340), and
  Of the wind speed distribution at the air outlet (341), the maximum wind speed portion (Cmax) of the air outlet (341) is located on the rear side of the vehicle from the center in the vehicle front-rear direction of the air outlet (341). An enlarged portion (342) that enlarges the opening area is formed on the vehicle front side in the vehicle front side portion.It is characterized by that.
[0006]
Accordingly, when the air curtain unit (300) is operated in the front seat boarding state, at least the inside air is introduced, so that the increase in air pressure in the front seat air conditioning zone (10a) due to the operation of the air blowing means (120) is reduced. The air pressure difference between the front seat air conditioning zone (10a) and the rear seat air conditioning zone (10b) can be reduced. Moreover, since the circulation wind flow can be performed in the front seat air conditioning zone (10a), the air conditioning wind flowing out from the front to the rear of the air curtain can be reduced, and the effect of saving the capacity of the front seat air conditioning unit (100) by the air curtain can be improved. be able to.
[0007]
In addition, in the conventional air conditioner, outside air may be introduced in order to give a fresh feeling to the conditioned air. However, the use form of the air curtain in the present invention is that the occupant gets in only the air conditioning zone (10a) on the front seat side. Therefore, the reduction in freshness of the air-conditioning air due to the introduction of inside air is not a big problem.
[0008]
Moreover, regarding the introduction ratio of the inside air introduction amount and the outside air introduction amount at least in the inside air introduction mode for introducing inside air, the larger the inside air introduction ratio, the greater the difference between the front seat air conditioning zone (10a) and the rear seat air conditioning zone (10b). Obviously, the air pressure difference can be reduced. In addition to this, when the introduction ratio of the inside air is about 20% or more of the entire intake air volume, the experience is that the air pressure difference between the front seat air conditioning zone (10a) and the rear seat air conditioning zone (10b) is rapidly reduced. Known. Therefore, if the introduction ratio of the inside air is about 20% or more of the entire intake air volume, the effect of the present invention can be remarkably exhibited, which is preferable.
[0009]
Here, when the setting of the introduction ratio in at least the inside air introduction mode for introducing the inside air is set so that the introduction ratio of the inside air is larger than 50%, the humidity of the vehicle window glass is low or the humidity in the passenger compartment is reduced. When it is high, there is a concern that the window glass is fogged. On the other hand, in the invention according to claim 2, the vehicle is provided with a fog state determination means (S74) for determining whether or not the window glass of the vehicle is fogged, and the boarding state determination means (S71) is in the front seat riding state. Is determined by the cloudy state determination means (S74) to determine that the window glass is clouded, and the inside air introduction mode is set so that the inside air introduction amount is larger than the outside air introduction amount. If it is, the inside / outside air switching means (113) is maintained in the outside air introduction mode for introducing outside air. Since the mode is prohibited and the outside air introduction mode is set, fogging of the window glass can be prevented in advance.
[0010]
  by the way,Claim1In the invention described inAs previously mentionedAir curtain unit (300)InA casing (310) having a built-in blower fan (320), and a blow-out duct (340) connected to the casing (310) and having a blow-out opening (341) for blowing air into the passenger compartment.e,The maximum wind speed portion (Cmax) in the wind speed distribution at the air outlet (341) is located more biased toward the vehicle rear side than the center in the vehicle front-rear direction of the air outlet (341).In addition, an enlarged portion (342) that enlarges the opening area is formed on the front side of the vehicle at the front side of the air outlet (341).
[0011]
As a result, the air blown out from the air outlet (341) is bent so as to be entrapped in the front side of the vehicle due to the Coanda effect described below, so that the air curtain is arranged in the front seat and rear seat air conditioning zones (10a, 10a, After flowing in a substantially vertical direction in the vehicle front-rear direction so as to partition 10b), the vehicle flows from the rear to the front. Therefore, the conditioned air blown from the front side of the vehicle toward the front seat air conditioning zone (10a) is pushed back to the front side of the vehicle by the air curtain in the vicinity of the boundary between the front seat and rear seat air conditioning zones (10a, 10b). It is possible to suppress the conditioned air from flowing into the rear seat air conditioning zone (10b).
[0012]
Here, the airflow bending action by the Coanda effect will be described. An airflow having a high wind speed (hereinafter referred to as a main flow) and an airflow having a low wind speed (hereinafter referred to as a subflow) are simultaneously blown from the same outlet (341). Then, an adhesion action due to friction occurs between the main flow and the side flow. As a result of this adhesion action, the main stream is gradually bent toward the substream as the distance from the air outlet (341) increases.
[0013]
  And the above claims1When the blown air at the blowout port (341) in the invention described in the above is divided into the blown air on the front side and the blown air on the rear side with respect to the center in the vehicle longitudinal direction, the maximum wind speed portion (Cmax) is the vehicle. Since it is biased to the rear side, the rear side blowing air becomes the main flow, and the front side blowing air becomes the side flow. Therefore, as illustrated in FIG. 13, the main flow is gradually bent toward the substream as the distance from the air outlet (341) increases, resulting in a flow of air that flows into the front side of the vehicle.
[0014]
Here, as a means for biasing the maximum wind speed portion (Cmax) to the rear side of the vehicle, a resistance member serving as resistance of air blown from the blower fan (320) to the vehicle front side portion of the inner surface of the blowout duct (340) However, if the resistance member is provided in this manner, the pressure loss of the blown air is greatly increased, and the capacity load of the blower fan (320) is increased.
[0015]
  In contrast, the claims1In the invention described in 4, the air outlet (341) of the air outlet duct (340).An enlarged portion (342) that enlarges the opening area is formed on the front side of the vehicle at the front side of the vehicle.Therefore, the maximum wind speed portion (Cmax) can be biased toward the vehicle rear side while suppressing an increase in the pressure loss of the blown air as compared with the case where the above-described resistance member is provided.
[0016]
  Claims3Like the invention described inFormed by the enlarged portion (342)If the opening area S1 of the enlarged opening (341a) is set to 0.25 to 0.5 times the opening area S2 of the mainstream opening (341b), the effect of suppressing the outflow of air-conditioning wind by bending the air curtain toward the vehicle front side It has been clarified by experiments of the present inventor that the above can be maximized.
[0017]
  Claims4As in the invention described in, if the angle formed between the blowing direction of the air blown out from the blow-out port (341) and the vertical direction is within 30 °, the effect of suppressing the outflow of air-conditioning wind by the air curtain is maximized. It is clear from experiments by the present inventors that this can be done.
[0018]
  Claims5In the invention described in the above, the air curtain unit (300) is arranged on the floor (15) of the passenger compartment so as to blow out air from below to above, and an air inlet ( 311) is provided with an auxiliary suction duct (360), and the tip of the auxiliary suction duct (360) is arranged at a position higher than the floor (15) by a predetermined height.
[0019]
  Here, when the air curtain unit (300) is disposed on the floor (15) of the passenger compartment, if the suction port is directly provided in the casing (310) of the air curtain unit (300), the floor (15 of the passenger compartment) ) Dust drifting in the vicinity is sucked into the casing (310) and blown out into the passenger compartment together with the air curtain. In contrast, the above claims5Since the suction port (360a) is arranged at a position higher than the floor (15) by a predetermined height, the dust drifting in the vicinity of the floor (15) of the passenger compartment is placed in the casing (310). It is possible to prevent the air from being sucked into the vehicle interior and blown into the vehicle interior.
[0020]
  Further, when the boarding state determination means (S71) determines that the boarding state is in the front seat, the claim6When the rear seat air conditioning unit (200) that air-conditions the rear seat air conditioning zone (10b) is stopped, it is preferable to determine that the passenger is in the front seat boarding state.
[0021]
  Claims7The auxiliary air duct (150) connected to the internal air inlet (111) of the front seat air conditioning unit (100) is provided, and the front end of the auxiliary internal air duct (150) is connected to the front seat and rear seat air conditioning zones. It is arranged near the boundary of (10a, 10b).
[0022]
  Here, since the air conditioning case (110) is arranged inside the instrument panel (20), the inside air introduced into the air conditioning case (110) is air located inside the instrument panel (20). In contrast, the above claims7According to the invention described in the above, since air located near the boundary between the front seat and rear seat air conditioning zones (10a, 10b) is introduced into the air conditioning case (110) as the inside air, it blows out from the air curtain unit (300). After the air thus flowed flows so as to partition the front seat and rear seat air conditioning zones (10a, 10b), the air is directly introduced into the air conditioning case (110). Therefore, inside air flows between the front seat air conditioning unit (100) and the air curtain unit (300) so as to circulate in the front seat air conditioning zone (10a) around the vehicle left-right axis. Therefore, the effect of suppressing the outflow of conditioned air by the air curtain can be further improved.
[0023]
  Claims8In the invention described in the above, when the passenger is in the front seat boarding state and the occupant is only in the driver seat among the passenger seat and the driver seat, the air conditioning zone on the driver seat side of the front seat air conditioning zone (10a) The air conditioning zone on the passenger's seat side is separated by an air curtain, so if the passenger is on the driver's seat only in the front seat riding state, the front seat air conditioning unit The effect of saving the capacity of (100) can be further improved.
[0024]
  Claims9As described above, it is preferable to add at least one of a ventilation function, a cleaning function, a deodorizing function, and a circulation function to the air curtain unit (300).
[0025]
In addition, the code | symbol in the bracket | parenthesis of each said means is an example which shows a corresponding relationship with the specific means as described in embodiment mentioned later.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
FIG. 1 shows an overall layout of this embodiment in which the present invention is applied to a one-box type RV vehicle. The vehicle air conditioner of the present embodiment includes a front seat air conditioning unit 100, a rear seat air conditioning unit 200, and an air curtain unit 300. Air conditioning control is performed on each air conditioning means (actuator) of these units 100, 200, and 300. It is an automatic air conditioner configured to always automatically control the temperature in the passenger compartment to a set temperature by being controlled by a device (hereinafter referred to as an air conditioner ECU) 400.
[0027]
The front seat air conditioning unit 100 is disposed on the inner side of the frontmost instrument panel 20 in the passenger compartment 10 and is a front seat that is an area on the front seat 11 side in the passenger compartment 10 as shown in FIG. The air conditioning zone 10a is air-conditioned.
[0028]
Further, the rear seat air conditioning unit 200 air-conditions the rear seat air conditioning zone 10b, which is an area on the rear seats (second and third row seats shown in FIG. 2) 12 and 13 in the passenger compartment 10. The rear seats 12 and 13 are disposed in the passenger compartment 10. More specifically, at the position on the rear side of the rear wheel housing portion (tire house) 31 that houses the rear wheel 30 of the vehicle, the rear space is arranged in the side space between the exterior material and the interior material (trim) of the vehicle side surface portion. The seat air conditioning unit 200 is accommodated.
[0029]
Further, as shown in FIG. 2, the air curtain unit 300 blows air that forms an air curtain extending in the left-right direction of the vehicle between the front seat air-conditioning zone 10a and the rear seat air-conditioning zone 10b. It is a thing and is arrange | positioned by the ceiling part 14 in the compartment 10. As shown in FIG. More specifically, at the position between the front seat 11 and the rear row 12 in the second row in the vehicle front-rear direction, the air curtain unit 300 is provided on the surface of the interior material that forms the ceiling portion 14 on the side of the passenger compartment 10. It is attached.
[0030]
In addition, the code | symbol 10c in FIG. 1, FIG. 2 has shown the discharge port which discharges the air of a vehicle interior outside, and is provided in the back of the rear seat air-conditioning zone 10b.
[0031]
Next, a specific configuration of the front seat air conditioning unit 100 according to the present embodiment will be described in detail with reference to FIG.
[0032]
In FIG. 3, a front seat air conditioning unit 100 includes an air conditioning case 110 that forms an air passage for guiding conditioned air to the front seat air conditioning zone 10 a, and a blowing means (for example, a centrifugal blower) 120 that generates an air flow in the air conditioning case 110. Refrigeration cycle 130 for cooling air flowing in air conditioning case 110 to cool front seat air conditioning zone 10a, and cooling water for heating air flowing in air conditioning case 110 to heat front seat air conditioning zone 10a The circuit 140 is configured.
[0033]
The air conditioning case 110 is disposed on the inner side of the instrument panel 20. The most upstream side (windward side) of the air conditioning case 110 is a portion constituting a suction port switching box (inside / outside air switching box) 110a, and an inside air introduction port 111 for taking in vehicle interior air (hereinafter referred to as interior air), and vehicle interior air. It has an outside air inlet 112 for taking in (hereinafter referred to as outside air). Further, an inside / outside air (suction port) switching damper (inside / outside air switching means) 113 is rotatably attached to the inside of the inside air introduction port 111 and the outside air introduction port 112.
[0034]
The inside / outside air switching damper 113 is driven by an actuator 114 (see FIG. 5) such as a servo motor, and the suction low mode is changed to a complete inside air introduction mode, a complete outside air introduction mode, an inside / outside air introduction (half-inside air) mode, and a part of outside air introduction Switch to a mode (at least an inside air introduction mode for introducing inside air) or the like.
[0035]
Here, the partial outside air introduction mode is a mode in which the inside air introduction amount is set to be larger than the outside air introduction amount. In the partial outside air introduction mode in the present embodiment, the air volume ratio between the inside air and the outside air. Is set to mainly introduce the inside air so as to be 8: 2 to 9: 1.
[0036]
The inside / outside air switching damper 113 constitutes inside / outside air switching means together with the suction port switching box 110a. When the inside / outside air switching damper 113 is driven to the solid line position in FIG. 3, the inside air introduction port 111 is completely closed, and the outside air introduction port 112 is completely blocked when driven to the two-dot chain line position. When it is driven to the position of the broken line, the outside air introduction port 112 is slightly opened and a part of the outside air introduction mode is introduced in which a part of the outside air is introduced in addition to the inside air.
[0037]
Further, the most downstream side (leeward side) of the air conditioning case 110 is a portion constituting the outlet switching box 110b, and a defroster opening, a face opening, and a foot opening are formed. A defroster duct 115 is connected to the opening of the defroster, and a defroster outlet 115a that mainly blows warm air toward the inner surface of the front window glass 40 of the vehicle opens at the most downstream end of the defroster duct 115. ing.
[0038]
In addition, a face duct 116 is connected to the face opening, and a face air outlet 116a that mainly blows cold air toward the head and chest of an occupant riding in the front seat 11 at the most downstream end of the face duct 116. Is open. 1 and 2, the conditioned air blown from the face outlet 116a is blown from the front side of the vehicle toward the front seat air-conditioning zone 10a.
[0039]
Furthermore, a foot duct 117 is connected to the foot opening, and a foot outlet that mainly blows warm air toward the foot of the passenger riding on the front seat 11 is provided at the most downstream end of the foot duct 117. 117a is open.
[0040]
In addition, two outlet switching dampers 118 are rotatably attached to the inside of each outlet. The two outlet switching dampers 118 are driven by an actuator 119 (see FIG. 5) such as a servo motor, and the outlet mode is set to any one of a face mode, a bi-level mode, a foot mode, a foot def mode, and a defroster mode. Switch.
[0041]
Incidentally, in the face mode, the entire amount of the conditioned air is blown out from the face air outlet 116a, in the bi-level mode, the air conditioned air is blown out from the face air outlet 116a and the foot air outlet 117a, and in the foot mode, most of the air conditioned air (total air outlet) About 80% of the air volume) is blown out from the foot outlet 117a, and part of the conditioned air is blown out from the defroster outlet 115a. Further, in the foot differential mode, the air is blown from the defroster outlet 115a and the foot outlet 117a. Specifically, the amount of air blown from the defroster outlet 115a is about 40% of the total amount of blown air, or at least 1/3 of the total amount of blown air. Set as above. Further, in the defroster mode, the entire amount of conditioned air is blown out from the defroster outlet 115a. The two outlet switching dampers 118 constitute an outlet switching means together with the outlet switching box 110b.
[0042]
The centrifugal blower 120 includes a centrifugal fan 121 rotatably accommodated in a scroll case 110c that is integrally formed with the air conditioning case 110, and a blower motor 122 that rotationally drives the centrifugal fan 121. The blower motor 122 controls the amount of blown air (the rotational speed of the centrifugal fan 121) based on a blower terminal voltage (hereinafter referred to as blower voltage) applied via a blower drive circuit 123 (see FIG. 5).
[0043]
The refrigeration cycle 130 is driven by the engine 1 by a belt and compresses the refrigerant 131, the condenser 132 that condenses and liquefies the compressed refrigerant, and the condensed and liquefied refrigerant is separated into gas and liquid to flow only the liquid refrigerant downstream. The liquid receiver 133 includes an expansion valve 134 that decompresses and expands the liquid refrigerant, an evaporator (cooling means) 135 that evaporates and evaporates the decompressed and expanded refrigerant, and a refrigerant pipe that connects these in an annular shape.
[0044]
Among these, the evaporator 135 is disposed in the air conditioning case 110 so as to block the entire air passage, and performs an air cooling action for cooling the air passing through itself and an air dehumidifying action for dehumidifying the air passing through itself. It is an indoor heat exchanger. In other words, the evaporator 135 is a cooling heat exchanger that cools and dehumidifies the conditioned air by the operation of the compressor 131. The compressor 131 is connected to an electromagnetic clutch 136 as clutch means for intermittently transmitting the rotational power from the engine 1 to the compressor 131. The electromagnetic clutch 136 is controlled by a clutch drive circuit 137 (see FIG. 5).
[0045]
When the electromagnetic clutch 136 is energized, the rotational power of the engine 1 is transmitted to the compressor 131, and the air cooling action by the evaporator 135 is performed. At this time, the discharge capacity of the refrigerant discharged from the discharge port of the compressor 131 changes in proportion to the rotational speed of the engine 1. When the energization of the electromagnetic clutch 136 is stopped, the engine 1 and the compressor 131 are shut off, and the air cooling action by the evaporator 135 is stopped. Here, the condenser 132 is disposed in a place where the traveling wind generated when the vehicle travels is easily received, and the outdoor heat exchange for exchanging heat between the refrigerant flowing inside the outside air blown by the cooling fan 138 and the traveling wind. It is a vessel.
[0046]
The cooling water circuit 140 is a circuit that circulates the cooling water heated by the water jacket of the engine 1 by a water pump (not shown), and includes a radiator, a thermostat (all not shown), and a heater core 141. In the heater core 141, cooling water that cools the engine 1 flows inside, and the cooling air is reheated using the cooling water as a heat source for heating.
[0047]
The heater core 141 is disposed downstream of the evaporator 135 in the air conditioning case 110 so as to partially block the air passage. An air mix damper 142 is rotatably attached to the air upstream side of the heater core 141.
The air mix damper 142 is driven by an actuator 143 (see FIG. 5) such as a servo motor, and adjusts the ratio of the amount of air passing through the heater core 141 and the amount of air bypassing the heater core 141 according to the stop position. It functions as a blowing temperature adjusting means for adjusting the blowing temperature of the air blown to the front seat air conditioning zone 10a.
[0048]
Next, a specific configuration of the rear seat air conditioning unit 200 according to the present embodiment will be briefly described with reference to FIG. 1. The rear seat air conditioning unit 200 forms an air passage that guides conditioned air to the rear seat air conditioning zone 10b. An air conditioning duct 210, a centrifugal blower (not shown) for generating an air flow in the air conditioning duct 210, a refrigeration cycle 130 for cooling the air flowing in the air conditioning case 110 and cooling the rear seat air conditioning zone 10b, and The cooling air circuit 140 etc. for heating the air which flows through the air-conditioning duct 210, and heating the rear-seat air-conditioning zone 10b are comprised.
[0049]
In the rear seat air conditioning unit 200, the outside air introduction port 112 and the inside / outside air switching damper 113 provided in the front seat air conditioning unit 100 are abolished, and operation is always performed by sucking only the inside air. The configuration of the rear seat air conditioning unit 200 is the same as that of the front seat air conditioning unit 100 except that the defroster duct 115 and the defroster outlet 115a are eliminated. Further, reference numerals 216 and 217 in FIG. 1 respectively indicate a rear seat face duct and a rear seat foot duct for guiding the conditioned air to the rear seat air conditioning zone 10b.
[0050]
Next, a specific configuration of the air curtain unit 300 according to the present embodiment will be described with reference to FIGS. 1 and 4. The air curtain unit 300 mainly includes a casing 310 that forms an air passage therein, and the casing. A blower fan 320 disposed in 310 and a fan motor (drive means) 330 that rotationally drives the blower fan 320 are configured.
[0051]
As shown in FIG. 4, the blower fan 320 is a cross-flow fan (cross flow fan) in which a rotating shaft 321 is disposed so as to extend in the left-right direction of the vehicle, and air is substantially orthogonal to the rotating shaft 321 in the impeller 322. It is designed to flow in the direction. This cross-flow fan can be designed to be longer in the direction of the rotating shaft 321 than a fan such as a centrifugal fan or an axial fan, and thus is suitable for forming an air curtain extending in the left-right direction of the vehicle.
[0052]
In the casing 310, an air curtain suction port 311 is opened in an upstream portion of the air flow of the blower fan 320 and a front portion of the vehicle, and the air in the front seat air conditioning zone 10a is indicated by an arrow B in FIGS. Is sucked into the air curtain suction port 311. In addition, a blowout duct 340 is connected to a portion of the casing 310 on the downstream side of the airflow of the blower fan 320 and a vehicle lower side, and the air curtain blowout port 341 that opens at the lower end portion of the blowout duct 340 has a substantially vertical direction. As shown by an arrow C in FIGS. 1 and 4, air is blown out downward.
[0053]
In addition, a dust removal filter 350 is disposed on the upstream side of the air flow of the blower fan 320 in the casing 310 so as to block the entire air passage. The dust filter 350 is formed of, for example, a folded nonwoven fabric, and captures (removes) dust in the air. Thereby, the air curtain unit 300 of this embodiment has an air cleaning function in addition to the air curtain function.
[0054]
Next, the configuration of the control system of the present embodiment will be described with reference to FIGS. The air conditioner ECU 400 includes switch signals from the switches on the control panel 50 provided on the instrument panel 20 and switches on a control panel (not shown) provided in the vicinity of the rear seats 12 and 13, and sensor signals from the sensors. Are entered. The air conditioner ECU 400 controls the operation of the air conditioner and is connected to other ECUs such as an engine ECU that controls the operation of the engine 1 and an air bag ECU that controls the operation of an air bag (not shown). In the meantime, communication (transmission and reception) is possible.
[0055]
Here, each switch on the control panel 50 is a switch for mainly setting the operation of the front seat air conditioning unit 100, and commands the operation and stop of the front seat air conditioning unit 100 as shown in FIG. The front seat air conditioner (A / C) switch 51 and the economy (ECO) switch 52, the suction port changeover switch 53 for switching the suction mode of the front seat air conditioning unit 100, and the temperature of the front seat air conditioning zone 10a to a desired temperature A temperature setting lever 54 for setting the air flow rate, an air volume switching lever 55 for switching the air flow rate of the centrifugal fan 121 of the front seat air conditioning unit 100, an air outlet changeover switch for switching the air outlet mode of the front seat air conditioning unit 100, Rear seat air conditioner (A / C) switch (operation) for commanding operation and stop of the rear seat air conditioning unit 200 Stage) 56, and an air curtain switch (operation means for commanding operation and stop of the air curtain unit 300) is 57 and the like.
[0056]
Of these, the front seat A / C switch 51 is an air conditioner operation switch that commands a cool mode in which the comfort in the passenger compartment is emphasized. The ECO switch 52 is an economy mode in which air conditioning is performed by setting the cooling degree of the conditioned air by the evaporator 135 to be lower than that in the cool mode, specifically, the ON / OFF temperature of the compressor 131 is set to 4 in the cool mode. This is an air conditioner operation switch for instructing an economy mode in which fuel economy (fuel efficiency) is set to 13 [deg.] C. ON and 12 [deg.] C. OFF with respect to [deg.] C. and 3 [deg.] C.
[0057]
The air volume switching lever 55 is an OFF position where the energization to the blower motor 122 is stopped, an AUTO position where the blower voltage of the blower motor 122 is automatically controlled, an LO position where the blower voltage applied to the blower motor 122 is minimized, and the blower motor 122 is minimized. The ME position can be operated to set the blower voltage applied to the intermediate value to the intermediate air volume, and the HI position to set the blower voltage applied to the blower motor 122 to the maximum value and the maximum air volume.
[0058]
The outlet switch includes a face (FACE) switch 58 for fixing to the FACE mode, a high level (B / L) switch 59 for fixing to the B / L mode, and a foot (FOOT) for fixing to the FOOT mode. ) Switch 60, foot differential (F / D) switch 61 for fixing to F / D mode, defroster (DEF) switch 62 for fixing to DEF mode, and auto (AUTO) switch 63 for automatically controlling the outlet mode There is.
[0059]
The switches on the control panel provided in the vicinity of the rear seats 12 and 13 are switches for setting the operation of the rear seat air conditioning unit 200. The temperature setting lever 54, the air volume switching lever 55, and FACE described above. This switch performs the same function as the switch 58, the FOOT switch 60, and the AUTO switch 63.
[0060]
As shown in FIG. 5, each sensor includes an inside air temperature sensor 64 that detects an air temperature inside the vehicle interior (hereinafter referred to as an inside air temperature), and an outside air temperature that detects an air temperature outside the vehicle interior (hereinafter referred to as an outside air temperature). Sensor 65, solar radiation sensor 66 for detecting the amount of solar radiation irradiated into the passenger compartment, post-evaporation temperature sensor 67 for detecting the air cooling temperature of the evaporator 135, and engine coolant temperature (cooling water temperature) flowing into the heater core 141 There is a cooling water temperature sensor 68 to detect.
[0061]
Among these, the post-evaporation temperature sensor 67 is specifically formed of a thermistor that is disposed immediately after the evaporator 135 and detects the air temperature immediately after passing through the evaporator 135 (hereinafter referred to as post-evaporation temperature).
[0062]
Next, a control process of the air conditioner ECU 400 according to the present embodiment will be described with reference to FIGS. Here, FIG. 7 is a flowchart showing basic control processing by the air conditioner ECU 400, and shows control related to the operation of the front seat air conditioning unit 100 and the air curtain unit 300. The operation control of the rear seat air conditioning unit 200 is the same as the control content of the operation control of the front seat air conditioning unit 100 except for step S70 described later. Omitted.
[0063]
The air conditioner ECU 400 includes a microcomputer (not shown) including a CPU, ROM, RAM, and the like, and sensor signals from the sensors 64 to 68 are A / D converted by an input circuit (not shown) in the air conditioner ECU 400. After that, it is configured to be input to the microcomputer.
[0064]
First, when the ignition switch is turned on and DC power is supplied to the air conditioner ECU 400, the routine of FIG. 7 is started to perform each initialization and initial setting (step S10). Next, a switch signal is read from each switch such as the temperature setting lever 54 (step S20). Next, the sensor signals from the inside air temperature sensor 64, the outside air temperature sensor 65, the solar radiation sensor 66, the after-evaporation temperature sensor 67, and the cooling water temperature sensor 68 are A / D converted and read (step S30).
[0065]
Subsequently, a target blowing temperature TAO of air blown into the passenger compartment 10 is calculated based on the following equation 1 stored in advance in the ROM (step S40).
[0066]
[Expression 1]
TAO = KSET × TSET−KR × TR−KAM × TAM−KS × TS + C where TSET is a set temperature set by the temperature setting lever 54, TR is an inside air temperature detected by the inside air temperature sensor 64, and TAM is an outside air temperature sensor. The outside air temperature detected at 65 and TS are the amount of solar radiation detected by the solar radiation sensor 66. KSET, KR, KAM, and KS are gains, and C is a correction constant.
[0067]
Next, the blower voltage (voltage applied to the blower motor 122) corresponding to the target blowing temperature is determined from the characteristic diagram (see FIG. 8) stored in advance in the ROM (step S50).
[0068]
Next, when the auto switch 63 on the control panel 50 shown in FIG. 6 is operated and the auto mode is selected, the target blowing temperature is determined from the characteristic chart (map, see FIG. 9) stored in the ROM in advance. The air outlet mode corresponding to is determined (step S60). In this air outlet mode, as the target air outlet temperature rises from the low temperature side to the high temperature side, the face mode → bilevel mode → foot mode is switched. In addition, when any of the blower outlet changeover switches 58 to 62 is selected by manual operation, the selected blower outlet mode is set.
[0069]
Next, the suction port mode is determined as one of a complete outside air introduction mode, an inside / outside air (semi-inside air) introduction mode, a complete inside air introduction mode, and a partial outside air introduction mode (step S70). Details of step S70 will be described later.
[0070]
Next, the target damper opening degree (SW) of the air mix damper 142 is calculated based on the following formula 2 stored in the ROM in advance (step S80).
[0071]
[Expression 2]
SW = {(TAO-TE) / (TW-TE)} × 100 (%)
TE is the post-evaporation temperature detected by the post-evaporation temperature sensor 67, and TW is the cooling water temperature detected by the cooling water temperature sensor 68.
[0072]
When calculated as SW ≦ 0 (%), the air mix damper 142 is controlled to a position (MAXCOOL position) in which all of the cool air from the evaporator 135 is bypassed from the heater core 141. Further, when calculated as SW ≧ 100 (%), the air mix damper 142 is controlled to a position (MAXHOT position) through which all of the cool air from the evaporator 135 passes through the heater core 141. Further, when calculated as 0 (%) <SW <100 (%), the air mix damper 142 passes a part of the cool air from the evaporator 135 to the heater core 141 and bypasses the rest of the cool air from the heater core 141. Controlled.
[0073]
Next, the control state of the compressor 131 is determined (step S90), and the actuators 114, 119, 143, the blower drive circuit 123, and the control states calculated or determined in steps S40 to S90 are obtained. A control signal is output to the clutch drive circuit 137. (Step S100).
[0074]
Next, the details of step S70 will be described with reference to the flowchart shown in FIG. 10. First, it is determined whether or not the passenger is in the front seat boarding state where the passenger is in only the front seat air conditioning zone 10a in the passenger compartment. (Step S71 (ride state determination means)). In the present embodiment, when the rear seat air conditioner (A / C) switch 56 is not turned on and the rear seat air conditioning unit 200 is stopped, it is determined that the vehicle is in the front seat riding state.
[0075]
And when it determines with it not being in a front seat boarding state in step S71, the suction low mode corresponding to target blowing temperature is determined from the characteristic view (refer FIG. 11) memorize | stored beforehand in ROM (step S72). Here, in the determination of the suction low mode, as the target blowing temperature rises from the low temperature side to the high temperature side, the setting is switched from the complete inside air introduction mode → the inside / outside air (half inside air) introduction mode → the complete outside air introduction mode.
[0076]
On the other hand, when it is determined in step S71 that the vehicle is in the front seat riding state, a voltage is applied to the fan motor 330 to operate the air curtain unit 300 (step S73), and then the vehicle window glass is fogged. Is determined (step S74 (cloudy state determination means)). In the present embodiment, it is determined that the window glass is clouded when the target blowing temperature TAO is equal to or higher than the predetermined temperature T4. The predetermined temperature T4 is a value that is very large compared to T1 (eg, −10 ° C.), T2 (eg, −5 ° C.), and T3 (eg, 0 ° C.) in FIG. 11, and is set to 55 ° C., for example. Yes.
[0077]
Here, since whether or not the window glass is fogged is determined by the humidity inside the window glass and the temperature of the window glass, values related to these humidity and temperature (for example, the vehicle speed that affects the temperature of the window glass). Or the outside air temperature TAM, etc.) may be taken into consideration, and the determination in step S74 may be performed.
[0078]
When the target blowing temperature TAO is lower than the predetermined temperature T4, the inside / outside air switching damper 113 is always maintained in the outside air introduction mode regardless of the change in the target blowing temperature TAO (step S75). On the other hand, when the target outlet temperature TAO is equal to or higher than the predetermined temperature T4, the inlet mode is determined according to step S72. That is, the suction port mode is determined as the complete outside air introduction mode.
[0079]
Next, the operation of the air conditioner configured as described above will be briefly described.
[0080]
The air flowing in the air conditioning case 110 by the blower 120 is cooled by exchanging heat with the refrigerant when passing through the evaporator 135 in the refrigeration cycle 130. Here, by controlling the rotation speed of the compressor 131 by the air conditioner ECU 400, the flow rate of the refrigerant flowing in the refrigeration cycle 130 is controlled, and the cooling performance of the refrigeration cycle 130 is adjusted.
[0081]
The air cooled by the evaporator 135 is heated by exchanging heat with the engine coolant when passing through the heater core 141 in the coolant circuit 140. Then, the ratio of the air passing through the heater core 141 and the air bypassing the heater core 141 is adjusted by the opening degree (SW) of the air mix damper 142, and thus the conditioned air adjusted to a predetermined temperature is supplied to each outlet 115a, Blow out from one or two of 116a, 117a.
[0082]
When the rear seat air conditioner (A / C) switch 56 is not turned on, it is determined that the passenger is in the front seat and the air curtain unit S73 is operated. As a result, air that is about to flow from the front seat air conditioning zone 10a to the rear seat air conditioning zone 10b is blocked by the air curtain as shown by the arrow D in FIG. Can do.
[0083]
Further, it is determined that the vehicle is in the front seat state, and further, when the target blowing temperature TAO is lower than the predetermined temperature T4, it is determined that the window glass is not in a cloudy state, and suction is performed regardless of the change in the target blowing temperature TAO. Always keep the mouth mode partly outside air introduction mode.
[0084]
Accordingly, when the air curtain unit 300 is operated in the front seat boarding state, the outside air introduction mode is determined except for the case where the window glass is fogged. Therefore, the front seat accompanying the operation of the centrifugal blower 120 is determined. The increase in air pressure in the air conditioning zone 10a can be reduced, and the difference in air pressure between the front seat air conditioning zone 10a and the rear seat air conditioning zone 10b can be reduced. Therefore, the air-conditioning wind that escapes from the front to the rear of the air curtain can be reduced, and the effect of reducing the capacity of the front seat air-conditioning unit 100 by the air curtain can be improved.
[0085]
Further, by setting the partial outside air introduction mode when the front seat is in the riding state as described above, a circulating wind flow in the front seat air-conditioning zone 10a is generated as shown by arrows A and D in FIG. The air-conditioning wind that escapes rearward can be reduced, and the effect of saving the capacity of the front seat air-conditioning unit 100 by the air curtain can be improved.
[0086]
In the case where the front seat air conditioning unit 100 is in the cooling operation, it is conventionally known that the full seat air introduction mode is set when the cooling load such as cool down is large. When the air curtain unit 300 is operated, the inside air is always introduced regardless of the cooling load, so that the effect of saving the capacity of the front seat air conditioning unit 100 by the air curtain can be improved regardless of the cooling load.
[0087]
In addition, when the window glass is clouded, it is prohibited to maintain a part of the outside air introduction mode, and the suction port mode is determined according to the change in the target blowing temperature TAO, so that the window glass is fogged. Can be prevented in advance.
[0088]
(Second Embodiment)
In the first embodiment, as shown in FIG. 4, the blowout duct 340 of the air curtain unit 300 is formed in a straight shape so that the cross-sectional area of the duct passage is constant, but in this embodiment, FIG. As shown, an enlarged portion 342 that enlarges the opening area of the air curtain outlet 341 is formed in the vehicle front side portion of the portion that forms the air curtain outlet 341 of the outlet duct 340.
[0089]
Specifically, the opening area S1 of the enlarged opening 341a, which is a portion of the air curtain outlet 341 that is enlarged toward the front side of the vehicle, is the mainstream opening that is the vehicle rear side portion of the enlarged opening of the air curtain outlet. It is set to 0.25 to 0.5 times the opening area S2 of 341b.
[0090]
Accordingly, as shown in FIG. 13, the maximum wind speed portion Cmax is located in the air curtain outlet 341 so as to be biased toward the vehicle rear side from the center X in the vehicle longitudinal direction. Therefore, since the air blown out from the air curtain outlet 341 is bent so as to be wound in the front side of the vehicle due to the Coanda effect (see FIG. 13), the air curtain is in the front seat and rear seat air conditioning zones 10a and 10b in the vehicle interior. After flowing in a substantially vertical direction in the vehicle front-rear direction so as to partition, the vehicle flows from the rear to the front. Therefore, the conditioned air blown toward the front seat air conditioning zone 10a from the front side of the vehicle is pushed back to the front side of the vehicle by the air curtain in the vicinity of the boundary between the front seat and rear seat air conditioning zones 10a and 10b. It is possible to suppress the conditioned air from flowing into the zone 10b.
[0091]
Here, the inventor of the present invention experimented how the degree to which the conditioned air can be prevented from flowing out of the air curtain into the rear seat air conditioning zone 10b changes depending on the difference in the wind speed ratio between the mainstream and the sidestream. did.
[0092]
As initial conditions of the experiment, set temperature TSET = 25 ° C., outside air temperature TAM = 35 ° C., solar radiation amount TS = 1 kW / m²The room temperature TR = 60 ° C., the suction port mode is an inside air introduction mode for introducing only the inside air, and the wind speed ratio between the main flow and the side flow is 0.5.
[0093]
Then, from this initial state, the air curtain unit 300 is operated and the front seat air conditioning unit 100 is cooled (cooled down). As time passes, the room temperature of the front seat air conditioning zone 10a and the rear seat air conditioning zone 10b The room temperature was measured. The air flow rate of the centrifugal blower 120 of the front seat air conditioning unit 100 is 400 m by the HI blower voltage shown in FIG.^Three/ H, air curtain air volume is 300m^Three/ H (main wind speed = 6 m / s, secondary wind speed = 3 m / s), and the operation of the front seat air-conditioning unit 100 is an operation based on the well-known cool-down automatic control conditions.
[0094]
FIG. 14 is a graph showing the measurement results of the above-described experiment. ΔT in the figure indicates the temperature difference between the front seat and rear seat air-conditioning zones 10a and 10b, and the larger the temperature difference ΔT, the greater the air curtain. It can be said that the effect is great. As a result of performing the above experiment by changing the wind speed ratio between the main flow and the side flow, as shown in FIG. 15, the temperature difference ΔT is reduced by about 0.3 to 0.7. It was found that the temperature difference could be set to 5 ° C. or higher, and in particular, the temperature difference ΔT could be peaked (about 8 ° C.) when the wind speed ratio was 0.5.
[0095]
Further, as a result of performing the above experiment with the wind speed ratio fixed at 0.5, the blower voltage set to HI, and the main wind speed changed, as shown in FIG. 16, the main wind speed was changed to 4 to 8 m / s. (Air volume is 180-350m^Three/ H), the temperature difference ΔT can be increased to about 5 ° C. or more. In particular, the mainstream wind speed is about 6 m / s (the air volume is about 300 m).^Three/ H), the temperature difference ΔT can be peaked (about 8 ° C.).
[0096]
Here, the blower voltage is ME (the air volume of the centrifugal fan 120 is 300 m^Three/ H) Air curtain air volume is about 150m^Three/ H, the blower voltage is LO (the air volume of the centrifugal fan 120 is 240 m^Three/ H), air curtain air volume is about 80m^ThreeIf the air curtain air volume is changed in conjunction with the change in the blower voltage, it is preferable that the temperature difference ΔT can be always peaked.
[0097]
In this embodiment, the wind speed ratio is set to 0.5 by setting the ratio of the opening area S1 of the enlarged opening 341a and the opening area S2 of the mainstream opening 341b to S1: S2 = 4: 6. Is realized. And the wind speed ratio can be made into 0.3-0.7 by forming opening area S1 to 0.25-0.5 time of opening area S2.
[0098]
(Third embodiment)
In the first and second embodiments, the air blown out from the air curtain outlet 341 is blown out downward in the substantially vertical direction, but the present invention is limited to blowing out in the vertical direction. Instead, in the present embodiment, the angle θ (see FIG. 17) formed by the blowing direction of the air blown from the air curtain outlet 341 and the vertical direction is set to be within 30 °.
[0099]
Here, in the experiment for measuring the temperature difference ΔT described in the second embodiment, the wind speed ratio is fixed to 0.5, the mainstream wind speed is fixed to about 6 m / s, and the air curtain is blown out from the air curtain outlet 341. The above experiment was performed by changing the air blowing angle θ. As a result, as shown in FIG. 18, if the blowing angle θ is within ± 30 °, the temperature difference ΔT can be about 5 ° C. or more. In particular, if the blowing angle θ is 0 °, the temperature difference ΔT reaches a peak (about 8 ° C).
[0100]
(Fourth embodiment)
In this embodiment, as shown in FIG. 19, the auxiliary | assistant internal air duct 150 which one end is connected to the internal air inlet 111 of the air-conditioning case 110, and the other end opens as the internal air inlet 150a which suck | inhales internal air is provided. And the inside air inlet 150a is arrange | positioned in the boundary vicinity of the front seat and rear seat air-conditioning zone 10a, 10b. Specifically, the auxiliary inside air duct 150 is arranged between the interior material and the exterior material on the left side of the vehicle, and the inside air suction port 150a is arranged in the opening provided in the center pillar (B pillar) on the left side of the vehicle. .
[0101]
Here, in the first to third embodiments, the inside air introduced into the air conditioning case 110 is air located inside the instrument panel 20, whereas according to the present embodiment, the front seat and rear seat air conditioning zones. Since air located near the boundary between 10a and 10b is introduced into the air conditioning case 110 as inside air, the air blown out from the air curtain unit 300 flows so as to partition the front seat and rear seat air conditioning zones 10a and 10b. Thereafter, the air is sucked into the inside air inlet 150a as it is without drifting through the front seat air conditioning zone 10a, and is introduced into the air conditioning case 110 from the inside air inlet 111 via the auxiliary inside air duct 150.
[0102]
Therefore, it is promoted that the inside air flows between the front seat air conditioning unit 100 and the air curtain unit 300 so as to circulate around the front seat air conditioning zone 10a around the vehicle lateral axis. Therefore, the effect of suppressing the outflow of conditioned air by the air curtain can be further improved.
[0103]
In this embodiment, the auxiliary internal air duct 150 is provided only on the left side of the vehicle. However, the auxiliary internal air duct 150 is disposed between the left and right interior materials and the exterior material, and the left and right center pillars (B pillars). You may make it arrange | position the internal air inlet 150a in each opening part. The auxiliary inside air duct 150 is preferably molded integrally with the interior material from resin.
[0104]
(Fifth embodiment)
In the first to fourth embodiments, the air curtain unit 300 is disposed on the ceiling portion 14 in the passenger compartment 10 and the air curtain is blown from the upper side to the lower side, but in this embodiment, FIG. As shown in FIG. 21, the air curtain unit 300 is disposed on the floor 15 of the vehicle and blows air from below to above. In the present embodiment, when the air curtain unit 300 is operated in the front seat boarding state and part of the outside air introduction mode is determined, the front seat air conditioning zone is indicated by arrows A and D in FIG. Circulating wind flow at 10a is possible.
[0105]
In the present embodiment, as described in the second embodiment, the maximum wind speed portion Cmax is located in the air curtain outlet 341 so as to be biased toward the vehicle rear side from the center X in the vehicle longitudinal direction. The inventor believes that the settings of the wind speed ratio between the main stream and the substream, the wind speed of the main stream, the blowing angle θ described in the third embodiment, and the like are also applied to the present embodiment as they are. It has been confirmed by the experiment conducted.
[0106]
(Sixth embodiment)
In the present embodiment, as shown in FIG. 22, in the air curtain unit 300 of the fifth embodiment, one end is connected to the air curtain suction port 311 that opens to the casing 310, and the other end sucks air in the vehicle interior. An auxiliary suction duct 360 that opens as the suction port 360a is provided. And this suction inlet 360a is arrange | positioned in the position higher only the predetermined height from the floor part 15. FIG. Specifically, the auxiliary suction duct 360 may be disposed in a center pillar (B pillar) (not shown) of the vehicle, and the suction port 360a may be disposed in an opening provided in the center pillar. The suction port 360 a may be arranged in the opening provided in the No. 14.
[0107]
Here, when the air curtain unit 300 is disposed on the floor portion 15 of the passenger compartment, if the air is directly sucked from the air curtain suction port 311 that opens in the casing 310 of the air curtain unit 300, the floor portion 15 of the passenger compartment. Dust drifting in the vicinity is sucked into the casing 310 and blown out into the vehicle compartment together with the air curtain. On the other hand, according to the present embodiment, since air is sucked from the suction port 360a arranged at a position higher than the floor 15 by a predetermined height, dust floating near the floor 15 of the passenger compartment is blown out into the passenger compartment. Can be suppressed.
[0108]
(Seventh embodiment)
The air curtain unit 300 of the present embodiment has a circulation function of blowing and circulating the air in the passenger compartment from the front to the rear, in addition to the air curtain function of blowing out air forming the air curtain. Specifically, the blowout duct 340 of the air curtain unit 300 disposed on the ceiling portion 14 in the passenger compartment 10 is configured to be movable to the position indicated by the two-dot chain line in FIG. An actuator (driving means) for moving 340 is provided. Then, when the air curtain is not used, the blowing duct 340 is moved to the position of the two-dot chain line, and the conditioned air blown from the front seat air conditioning unit 100 is blown toward the rear seat air conditioning zone 10b to forcibly. The air curtain unit 300 is caused to function so as to circulate.
[0109]
Thereby, especially in the vehicle air conditioner that does not have the rear seat air conditioning unit 200, the conditioned air is forced to flow through the rear seat air conditioning zone 10b, so that the feeling of warmth of the passengers in the rear seat can be made comfortable.
[0110]
(Eighth embodiment)
In the present embodiment, the air curtain unit 300 of the seventh embodiment is applied to a vehicle having the sunroof 16. FIGS. 23 and 24 are schematic views showing a state in which the air curtain unit 300 of the present embodiment is provided on the sunroof 16. As shown in FIG. 23, when the sunroof 16 is closed, the air curtain function or the circulation function is exhibited. The air curtain unit 300 can be operated. On the other hand, as shown in FIG. 24, when the sunroof 16 is opened, the air curtain unit 300 can exert a ventilation function of forcing the vehicle interior air to blow out to the outside of the vehicle interior.
[0111]
Further, as shown in FIG. 25, the air curtain unit 300 includes a photocatalyst deodorizing filter 370 made of a honeycomb plate member that holds the photocatalyst, and the air curtain unit 300 has a deodorizing function for deodorizing air in the vehicle interior. You may let them. 25, the air curtain unit 300 may be provided with a heat exchanger 380. The heat exchanger 380 shown in FIG. 25 includes a Peltier element 381 and a heat sink 382.
[0112]
(Other embodiments)
In the first to eighth embodiments, the suction low mode in step S75 is set to the partial outside air introduction mode set so that the inside air introduction amount is larger than the outside air introduction amount. However, the present invention is not limited to this. In step S75, the suction port mode may be set to the inside air introduction mode that introduces at least inside air. For example, the suction low mode complete inside air mode in step S75 may be set, or the mode may be set so that the inside air introduction amount is smaller than the outside air introduction amount. It is empirically known that the difference in air pressure between the front seat air-conditioning zone 10a and the rear seat air-conditioning zone 10b is drastically reduced when the inside air introduction ratio is about 20% or more of the entire intake air volume. If the introduction ratio of the inside air is about 20% or more of the entire intake air volume, the effect of the present invention can be remarkably exhibited, which is preferable.
[0113]
In the case of the front seat boarding state, in the first embodiment, when the fogging state determining means (step S74) determines that the window glass is fogged, it relates to the change in the target blowing temperature TAO. However, the present invention abolishes the fog state determination means and introduces at least the inside air in the suction port mode regardless of whether or not the window glass is fogged. The inside air introduction mode may be set. In particular, when the air outlet mode in step S75 is set so that the inside air introduction amount is equal to or less than the outside air introduction amount, the humidity in the passenger compartment decreases, so even if the target outlet temperature TAO is the predetermined temperature T4. The window glass is not necessarily cloudy. Therefore, in such a setting, the fogging state determination means is abolished, and the suction port mode is set to at least the inside air mode in step S75 when the front seat is in the riding state regardless of whether or not the window glass is fogged. It is preferable to adopt the inside air introduction mode for introducing.
[0114]
In the first to eighth embodiments, the cross-flow fan is applied to the blower fan 320 of the air curtain unit 300. However, the present invention is not limited to this, and a centrifugal fan or an axial flow fan is used. Etc. may be applied.
[0115]
Further, in the first embodiment, the boarding state determination means (step S71) determines that the vehicle is in the front seat boarding state when the rear seat air conditioning unit 200 is stopped. For example, when the air curtain switch 57 is not turned on and the air curtain unit 300 is stopped, it may be determined that the vehicle is in the front seat boarding state. Further, for example, a rear seat occupant detection means (for example, a seating sensor, a pyroelectric sensor, an infrared sensor, etc.) for detecting whether or not an occupant is in the rear seats 12 and 13 is provided. Accordingly, it may be determined whether the vehicle is in the front seat state.
[0116]
Moreover, in the said 2nd Embodiment, the expansion part 342 which expands the opening area of the air curtain blower outlet 341 is formed in the blower duct 340, Therefore A vehicle rear side rather than the center of the vehicle front-back direction among the air curtain blower outlets 341 is shown. However, the means for positioning the maximum wind speed portion Cmax in a biased manner is not limited to the formation of the enlarged portion 342. You may make it provide the resistance member used as the resistance of the air ventilated from the ventilation fan 320 in a side part.
[0117]
Further, the vehicle air conditioner of the present invention has a function of partitioning the air conditioning zone on the driver's seat side and the air conditioning zone on the passenger seat side of the front seat air conditioning zone 10a with an air curtain, and when the front seat riding state is determined. In addition, when an occupant is in only the driver's seat among the passenger seat and driver's seat, in addition to the air curtain that partitions the front seat air conditioning zone 10a and the rear seat air conditioning zone 10b, the air conditioning on the driver seat side You may make it form the air curtain which partitions off a zone and the air-conditioning zone by the side of a passenger seat. According to this, the effect of labor saving of the front seat air conditioning unit 100 can be further improved.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an overall layout of an air conditioner according to a first embodiment of the present invention.
2 is a schematic diagram showing the position of an air curtain by the air conditioner of FIG. 1. FIG.
FIG. 3 is a schematic diagram showing an overall configuration of the air conditioner of FIG. 1;
4 is a schematic diagram showing a structure of an air curtain unit of the air conditioner of FIG. 1. FIG.
5 is a block diagram showing a control system of the air conditioner of FIG. 3. FIG.
6 is a front view showing details of a control panel of the air conditioner of FIG. 3. FIG.
FIG. 7 is a flowchart showing basic control processing by the air conditioner ECU of FIG. 5;
FIG. 8 is a characteristic diagram showing a relationship between a target blowing temperature and a blower voltage according to the flowchart of FIG.
FIG. 9 is a characteristic diagram showing a relationship between a target outlet temperature and an outlet mode according to the flowchart of FIG.
10 is a flowchart showing an outlet mode determination process according to the flowchart of FIG. 7;
11 is a characteristic diagram showing a relationship between a target outlet temperature and a suction port mode according to the flowchart of FIG.
FIG. 12 is a schematic diagram showing a structure of an air curtain unit of an air conditioner according to a second embodiment of the present invention.
13 is an explanatory diagram for explaining the Coanda effect by the air curtain unit of FIG. 12;
FIG. 14 is an experimental result showing an air curtain effect by the air conditioner according to the second embodiment, and is a graph showing a relationship between time and room temperature.
FIG. 15 is an experimental result showing an air curtain effect by the air conditioner according to the second embodiment, and is a graph showing a relationship between time and temperature difference ΔT.
FIG. 16 is an experimental result showing an air curtain effect by the air conditioner according to the second embodiment, and is a graph showing a relationship between a mainstream wind speed and a temperature difference ΔT.
FIG. 17 is an explanatory diagram for explaining the blowing angle of air blown from an air curtain unit according to a third embodiment of the present invention.
FIG. 18 is an experimental result showing an air curtain effect by the air conditioner according to the third embodiment, and is a graph showing a relationship between the blowing angle and the temperature difference ΔT.
FIG. 19 is a perspective view showing an air conditioner according to a fourth embodiment of the present invention.
FIG. 20 is a perspective view showing an air conditioner according to a fifth embodiment of the present invention.
21 is a schematic diagram showing the position of an air curtain by the air conditioner of FIG. 20;
FIG. 22 is a schematic diagram showing an air curtain unit of an air conditioner according to a sixth embodiment of the present invention.
FIG. 23 is a schematic diagram showing an air curtain unit of an air conditioner according to an eighth embodiment of the present invention.
24 is a schematic view showing a state in which the sunroof in FIG. 23 is opened.
FIG. 25 is a schematic diagram showing an air curtain unit of an air conditioner according to an eighth embodiment of the present invention.
[Explanation of symbols]
10a ... front seat air conditioning zone, 10b ... rear seat air conditioning zone,
100 ... Front seat air conditioning unit, 120 ... Centrifugal blower (air blowing means),
113 ... Inside / outside air switching damper (inside / outside air switching means),
300: Air curtain unit, S71: Riding state determination means.

Claims (9)

An air curtain unit (300) for blowing air in the vehicle interior to form an air curtain between the front seat air conditioning zone (10a) on the front seat side and the rear seat air conditioning zone (10b) on the rear seat side in the vehicle interior ;
Blowing means (120) for blowing conditioned air toward the front seat air conditioning zone (10a) from the front side of the vehicle, and inside / outside air switching means (113) for adjusting the introduction ratio of the inside air and the outside air serving as the conditioned air Front seat air conditioning unit (100),
Riding state determination means (S71) for determining whether or not the front seat is in a passenger seated state in which only passengers are in the front seat air conditioning zone (10a) in the passenger compartment,
When the riding state determining means (S71) determines the front seat riding state, the air curtain unit (300) is operated, and the inside / outside air switching means (113) introduces at least inside air. To maintain the mode ,
Further, the air curtain unit (300) has a casing (310) containing a blower fan (320) and a blowout opening (341) connected to the casing (310) for blowing air into the vehicle interior. A duct (340),
Of the wind speed distribution at the air outlet (341), the maximum air velocity portion (Cmax) is located on the air outlet side of the air outlet (341) so as to be biased toward the vehicle rear side from the center in the vehicle front-rear direction. The vehicle air conditioner is characterized in that an enlarged portion (342) that enlarges the opening area is formed on the vehicle front side in the vehicle front side portion of 341) . A fog state determination means (S74) for determining whether or not the window glass of the vehicle is fogged;
Even when the boarding state determination means (S71) determines the front seat riding state, the fogging state determination means (S74) determines that the window glass is cloudy and the amount of inside air introduced is When the inside air introduction mode is set so as to be larger than the outside air introduction amount, the inside / outside air switching means (113) is maintained in the outside air introduction mode for introducing outside air. The vehicle air conditioner described in 1. The opening area of the enlarged opening part (341a) formed by the enlarged part (342) is S1, and the main stream opening part (341b) which is the vehicle rear side part of the enlarged opening part (341a) in the outlet (341). ) Is the opening area of S2,
The vehicle air conditioner according to claim 1 or 2 , wherein the opening area S1 is 0.25 to 0.5 times the opening area S2. The vehicle air conditioner according to any one of claims 1 to 3, wherein an angle formed between a blowing direction of air blown from the blower outlet (341) and a vertical direction is within 30 °. The air curtain unit (300) is arranged on the floor (15) of the passenger compartment and blows out air from below to above,
An auxiliary suction duct (360) connected to the air inlet (311) of the casing (310),
The vehicle air conditioner according to any one of claims 1 to 4 , wherein a tip of the auxiliary suction duct (360) is disposed at a position higher than the floor (15) by a predetermined height. A rear seat air conditioning unit (200) for air conditioning the rear seat air conditioning zone (10b);
The riding state determining means (S71) is any one of claims 1 to 5 wherein the rear seat air conditioning unit (200) and judging that the said front seat riding condition when it is stopped The vehicle air conditioner described in 1. An auxiliary internal air duct (150) connected to the internal air inlet (111) of the front seat air conditioning unit (100);
Wherein the tip of the auxiliary inside air duct (150), for a vehicle according to any one of claims 1 to 6, characterized in that disposed near the boundary of the front seat and rear seat air zone (10a, 10b) Air conditioner. When the passenger is in the front seat and the passenger is in only the driver seat among the passenger seat and the driver seat, the air conditioning zone on the driver seat side and the passenger seat side in the front seat air conditioning zone (10a) The vehicle air conditioner according to any one of claims 1 to 7 , wherein the air conditioning zone is partitioned by an air curtain. A ventilation function that ventilates the passenger compartment when parking, a purifying function that purifies the air in the passenger compartment, a deodorizing function that deodorizes the air in the passenger compartment, and a circulation function that blows and circulates the air in the passenger compartment from the front to the rear. The vehicle air conditioner according to any one of claims 1 to 8 , wherein at least one of the functions is added to the air curtain unit (300).

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