JP3575119B2 - Automotive air conditioning system - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an air conditioning system for an automobile such as a one-box car.
[0002]
[Prior art]
In an automobile such as a one-box car having a driver's seat and a front passenger seat at the front of the passenger compartment and second and third seats at the rear of the passenger compartment, a single air conditioning unit can cover the entire interior of the passenger compartment as desired. It is difficult to air-condition to temperature.
[0003]
Therefore, as shown in FIG. 14, in an automobile having a first seat 2 having a driver's seat and a passenger seat in a passenger compartment 1 and a second seat 3 and a third seat 4 at a rear portion, an instrument at a front portion is provided. The front air-conditioning unit 6 is installed inside the interior panel 5 and the rear air-conditioning unit 7 is installed near the lower part of the second seat 3. 1 air conditioning.
[0004]
In other words, when the cooling operation is described as an example, in the case of riding in all the seats in which the second seat 3 and the third seat 4 are also taken, the front air conditioner unit 6 and the rear air conditioner unit 7 are driven, and the ride only in the first seat 2 is performed. In this case, the front air conditioner unit 6 is operated, the rear air conditioner unit 7 is stopped, and only the vicinity of the first seat 2 is cooled.
[0005]
In FIG. 14, the dotted arrow indicates a case where all the seats are occupied, and the cool air blown out from the instrument panel outlet 8 by the operation of the front air conditioner unit 6 is directed to the vicinity of the occupant's chest, and the side air is operated by the operation of the rear air conditioner unit 7. The cool air blown from the rear outlet 10 provided in the roof duct 9 is directed to the vicinity of the occupant's shoulder.
[0006]
The solid arrow indicates the case where the passenger is only in the first seat 2, and the cool air blown out from the instrument panel outlet 8 by the operation of the front air conditioner unit 6 is directed to the vicinity of the occupant's chest, and only the first seat 2 is moved. Cool.
[0007]
[Problems to be solved by the invention]
However, there is no problem in the case where the front air-conditioning unit 6 and the rear air-conditioning unit 7 are operated at the same time while riding in all the seats, but only the first seat 2 is boarded and the rear air-conditioning unit 7 is stopped. In the case of the operation with only 6, there is a problem that the cool air blown out from the instrument panel outlet 8 flows to the rear of the passenger compartment 1 and the cooling efficiency near the first seat 2 is reduced.
[0008]
Therefore, the first seat 2 and the second seat 3 are divided by a curtain, or an air curtain is formed to prevent leakage of cool air. There is a problem that the rear view is obstructed if the space is separated by a curtain, and a large air volume is required to form an air curtain, a large blower is required, and noise is large and discomfort is caused.
[0009]
The present invention has been made in view of the above circumstances, and an object thereof is to blow out from the instrument panel outlet even when only the front seat is boarded and only the front air conditioner unit is operated. It is an object of the present invention to provide an air conditioning system for a vehicle, in which cool air does not escape to the rear of a vehicle compartment, thereby improving cooling efficiency and fuel efficiency.
[0010]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention has a front seat at a front portion of a vehicle compartment and a rear seat at a rear portion, and blows wind from an instrument panel outlet at a front portion of the vehicle compartment. A front air conditioner unit is provided, and a rear air conditioner unit that blows air from the ceiling outlet at the rear is provided.
The instrument panel outlet is provided with a blowout louver that guides the wind blown out of the blowout port to the rear, and the ceiling blowout port is provided with a blowout louver that guides the wind blown out of the blowout port forward. The airflow is circulated around the front seat by colliding with wind blowing from a ceiling outlet .
[0011]
According to a second aspect of the present invention, when the difference between the installation temperature of the cabin and the in-vehicle temperature of the first aspect is within a certain range, the wind blown from the instrument panel outlet and the wind blown forward from the ceiling outlet are hit. And
According to a third aspect of the present invention , a blowout louver is provided at the outlet of the instrument panel of the first aspect to guide the wind blown out of the blowout port upward of the windshield, and the wind blown out of the blowout port is provided at the ceiling blowout port. the blow louver guides upwardly disposed of, and a wind blown the instrument panel air outlet from the ceiling air outlet, characterized in that the bump in the vicinity of an upper portion of the windshield.
[0012]
According to a fourth aspect, the wind blown out from the instrument panel outlet according to any one of the first to third aspects blows obliquely upward toward a rear portion.
A fifth aspect of the present invention is characterized in that the wind blown from the ceiling outlet according to any one of the first to third aspects blows obliquely downward toward the front.
According to a sixth aspect of the present invention, the instrument panel outlet according to any one of the first to third aspects includes a swing motor, a shaft rotated by the swing motor, and provided in a lateral direction of the instrument panel outlet, and And a blowout louver that rotates about the shaft and swings at a predetermined angle toward the ceiling .
[0013]
According to claim 8, the wind blown out from the instrument panel outlet and the ceiling outlet according to any one of claims 1 to 3 stops the louver at the time of rising and makes it a direct wind, and normally the blowout louver swings. And indirect wind.
[0014]
When only the front seats are boarded and only the front air conditioner unit is operated, the cool air blown from the instrument panel outlet and the wind blown forward from the ceiling outlet collide, and the cool air circulates near the front seats, The cool air does not directly hit the occupant in the front seat, so that it is possible to prevent local cooling as indirect wind and prevent the cool air from escaping to the rear of the passenger compartment.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 and 2 show a one-box car as an automobile. Reference numeral 11 denotes a vehicle body, and the vehicle body 11 includes a floor panel 12, a ceiling panel 13, a front panel 14, and a rear panel 15. A front panel 16 is provided with a front glass 16, and a rear panel 15 is provided with a rear glass 17, thereby forming a cabin 18.
[0016]
An instrument panel 19 is provided at a front portion of the vehicle cabin 18, and a first seat 21 as a front seat including a driver's seat 20 a and a passenger seat 20 b is provided to face the instrument panel 19. Behind the first seat 21, a second seat 22 and a third seat 23 are provided as rear seats.
[0017]
A front air conditioner unit 24 is installed below the instrument panel 19, and a rear air conditioner unit 25 is installed on the floor panel 12 located below the second seat 22.
[0018]
The front air conditioner unit 24 is configured as shown in FIG. That is, the unit case 26 is provided with an outside / inside air intake 27 at one end, a vehicle interior blowout 28 at the other end, and a heat exchange unit 29 at an intermediate portion. The outside / inside air intake section 27 is composed of an outside air having a damper 30 a and inside air, an intake port 30 and a blower 31, and sucks outside air or inside air and supplies it to the heat exchange section 29.
[0019]
The vehicle interior outlet 28 is provided with a face outlet 32 as an instrument panel outlet at a front portion, a defroster outlet 33 at an upper portion, and a foot outlet 34 for blowing to feet and knees at a lower portion.
[0020]
A front evaporator 35a is provided upstream of the heat exchange unit 29, and a heater core 36 is provided obliquely with respect to the unit case 26 downstream. A first air mix damper 37 is provided on the upper side of the heater core 36 so as to be openable and closable, and a second air mix damper 38 is provided on the lower side so as to be openable and closable.
[0021]
Reference numeral 39 denotes an engine, and reference numeral 40 denotes a compressor driven by the engine 39. The discharge side of the compressor 40 is connected to a condenser 42 via a refrigerant pipe 41a, and the condenser 42 is connected to the front evaporator 35a via a refrigerant pipe 41b provided with a decompressor 43 in the middle. The front evaporator 35a is connected to the suction side of the compressor 40 via the refrigerant pipe 41c, and forms a refrigeration cycle. Further, a cooling water passage (not shown) of the engine 39 is connected to the heater core 36 via a water pipe 44.
[0022]
The rear air conditioner unit 25 is configured as shown in FIG. That is, an inside air intake portion 46 is provided at one end side of the unit case 45, a vehicle interior blowout portion 47 is provided at the other end side, and a heat exchange portion 48 is provided at an intermediate portion. The inside air intake section 46 includes an inside air suction port 49 and a blower 50, and sucks inside air and supplies it to the heat exchange section 48.
[0023]
The vehicle interior outlet 47 has a warm air outlet 51 connected to a rear heater duct described later and a cool air outlet 52 connected to a roof duct described later. A rear evaporator 35b is provided upstream of the heat exchange section 48, and a rear heater core 53 is provided obliquely with respect to the unit case 45 downstream. An air mix damper 54 is provided below the rear heater core 53 so as to be freely opened and closed. Further, an outlet switching damper 55 is provided downstream of the rear heater core 53. The rear evaporator 35a is connected to a refrigeration cycle of the front air conditioner unit 24 via a refrigerant pipe, and the rear heater core 53 is connected to a cooling water channel of the engine 39 via a water pipe.
[0024]
The hot air outlet 51 of the rear air conditioner unit 25 is connected to a rear heater duct 56 as shown in FIG. 1, and the rear heater duct 56 has warm air at the feet of the second seat 22 and the third seat 23. Hot air outlets 57a and 57b are provided.
[0025]
The cold air outlet 52 of the rear air conditioner unit 25 is connected to a roof duct 59 directly above the first seat 21 via a pillar duct 58 provided on a B pillar of the vehicle body 11, and the roof duct 59 is connected to the vehicle body 11. It is connected to side roof ducts 60 provided on the left and right side roof rails.
[0026]
The face outlet 32 as the instrument panel outlet will be described with reference to FIGS. 5 and 6. That is, the blowout casing 61 has a rectangular shape that is long in the horizontal direction, and a blowout louver 64 composed of a plurality of vertical fins 62 and a plurality of horizontal fins 63 is provided inside the blowout casing 61 around an axis 65. It is provided so as to be rotatable vertically.
[0027]
A shaft 66 penetrates the shaft 65 in the lateral direction, and a blowout louver 64 is fixed to the shaft 66. One end of the shaft 66 is directly connected to a swing motor 67 provided on the side of the blowout casing 61, and the blowout louver 64 swings up and down via the shaft 66 by the drive of the swing motor 67. I have.
[0028]
Next, the roof duct 59 will be described with reference to FIG. That is, the roof duct 59 is provided on the lower surface of the ceiling panel 13 across the width direction of the vehicle body 11. On the front surface of the roof duct 59, front outlets 68a and 68b are provided as ceiling outlets which are divided into left and right portions corresponding to the driver's seat 20a and the passenger's seat 20b. Inside the roof duct 59, a plurality of rectifying plates 69 for guiding air guided from the pillar duct 58 to the front outlets 68a and 68b are provided.
[0029]
Further, independent front louvers 70a, 70b are provided at the front portions of the front outlets 68a, 68b, respectively, and these are connected by a shaft 71. A driven gear 72 is fitted to an intermediate portion of the shaft 71. A space 73 is provided between the front outlets 68a and 68b facing the driven gear 72. A gear motor 74 is mounted in the space 73 in a horizontal direction.
[0030]
A drive shaft 77 is connected to a rotation shaft 75 of the gear motor 74 via a joint 76, and the drive shaft 77 is provided with a potentiometer 78. A drive gear 79 is fitted on the drive shaft 77, and the drive gear 79 meshes with the driven gear 72. The drive of the gear motor 74 rotates the blowout louvers 70a and 70b to change the direction of the wind blown from the front blowout ports 68a and 68b.
[0031]
A communication duct 80 is provided in parallel with the roof duct 59 on the rear surface thereof, and communicates with the pillar duct 58. A pair of rear outlets 80a and 80b are provided on the rear surface of the communication duct 80 so as to be separated from each other left and right. Each of the rear outlets 80a and 80b is provided with a louver 81 and a small vane 82. Further, a shutter 83 that can be freely opened and closed is provided at the rear outlets 80a and 80b. Further, both left and right ends of the communication duct 80 are connected to the left and right side roof ducts 60.
[0032]
Next, the side roof duct 60 will be described. It is configured as shown in FIGS. The side roof duct 60 is provided inside the side roof rail 84 along the longitudinal direction. The side roof duct 60 is provided with four side outlets 85 corresponding to the second seat 22 and two side outlets 86 corresponding to the third seat 23. . Further, the side roof duct 60 is provided with a plurality of rectifying plates 87 for guiding the wind from the communication duct 80 to the side outlets 85 and 86.
[0033]
Further, the side outlets 85 and 86 are provided with outlet louvers 88 and 89, respectively. Since the blowout louvers 88 and 89 have basically the same structure, one of the blowout louvers 88 will be described. The blowout louvers 88 are connected by a shaft 90. A driven gear 91 is fitted to the end of the shaft 90, and a potentiometer 92 is provided.
[0034]
A gear motor 93 is mounted laterally on the side of the shaft 90. A drive shaft 96 is connected to a rotation shaft 94 of the geared motor 93 via a joint 95. A drive gear 97 is fitted to the drive shaft 96, and the drive gear 97 meshes with the driven gear 91. Then, the blow louver 88 is rotated by driving the gear motor 93 to change the direction of the wind blown from the side blow-out port 85.
[0035]
Next, the control method of the front air-conditioning unit 24 and the rear air-conditioning unit 25 configured as described above will be described. As shown in FIG. The setting input section 100 includes a “front seat set temperature”, a “rear seat set temperature”, and a “mode setting”. The mode setting is for a front / rear zone (only the front seats are to be taken) or an entire zone (for the front and rear seats). This is done by switching the switch.
[0036]
The feedback unit 101 includes a sensor installed in the vehicle interior 18, and includes, for example, “front seat indoor temperature (upper)”, “front seat indoor temperature (lower)”, “rear seat indoor temperature (upper)”, “rear seat”. “Indoor temperature (lower)”, “humidity”, “insolation (including uneven solar radiation)”, and “outside air temperature” are provided. The signals from the setting input unit 100 and the feedback unit 101 are input to the control command value calculation unit 102.
[0037]
The control command value calculation unit 102 controls the front seat conditioned air control 103, the front seat louver control 104, the rear seat conditioned air control 105, and the rear seat louver control 106, as well as the compressor ON / OFF and capacity control 107. In addition, the controller controls the refrigerant pipe solenoid valve 108 of the rear air conditioner unit 25.
[0038]
The devices controlled by the front seat air conditioning wind control 103 are a front air conditioner unit, a blower, an air intake damper, an air mix damper, and an outlet damper. The front seat louver control 104 is an instrument panel outlet louver and a front outlet louver.
[0039]
Further, the rear seat conditioned air control 105 is a rear air conditioner unit, a blower, an air mix damper, and an outlet damper, and the rear seat louver control 106 is a rear outlet louver, a right seat louver, and a left seat louver.
[0040]
Next, a description will be given of an air conditioning system for an automobile configured as described above.
When the first seat 21, the second seat 22, and the third seat 23 are occupied, or when the first seat 21 and the second seat 22 are occupied, the mode is set to the entire zone, and the front air conditioning unit 24 is set. The rear air conditioner unit 25 and the rear air conditioner unit 25 operate at the same time, and the area around the first seat 21 is air-conditioned by the front air conditioner unit 24, and the area around the second and third seats 22 and 23 is air-conditioned by the rear air conditioner unit 25. That is, the front-seat conditioned air control and the rear-seat conditioned air control are performed based on the independently set front-seat set temperature and rear-seat set temperature.
[0041]
At this time, as shown in FIG. 12A, the outlet grill 64 of the face outlet 32 is swung by the swing motor 67 in the range of θ = 20 ° in the chest direction of the occupant. The front outlets 68a, 68b provided in the roof duct 59 are closed by outlet grills 70a, 70b. Also, as shown in FIG. 12B, the gear motor 93 of the side roof duct 60 provided on the side roof rail 84 swings the outlet grill 89 in the range of θ = 45 °, and the side outlets 85 and 86 are provided. Is blown from the occupant's head to the chest. The cool air blown out from the side outlets 85 and 86 is sent in the direction of the occupant at a rate of once per three swings in the ceiling direction. Further, the blow grill 89 is swung in the range of θ = 45 ° and cool air is caused to flow along the ceiling panel 13 to cool the ceiling panel 13 and reduce radiant heat from the ceiling panel 13, thereby improving cooling efficiency.
[0042]
Therefore, when the mode setting is the entire zone, the front air conditioner unit 24 and the rear air conditioner unit 25 operate simultaneously, the area around the first seat 21 is air-conditioned by the front air conditioner unit 24, and the second seat 22 and the third seat 23 The periphery is air-conditioned by a rear air-conditioning unit 25.
[0043]
Next, when the vehicle is only in the first seat 21, if the mode is set to the front and rear zones, the rear air conditioner unit 25 is stopped and only the front air conditioner unit 24 is operated. When the temperature difference is equal to or more than a certain value), the outlet grill 64 of the face outlet 32 swings in the range of θ = 20 ° by the swing motor 67, and as shown in FIG. The cold air near the chest of the seated occupant can be directly blown. The outlet grills 70a, 70b of the front outlets 68a, 68b provided in the roof duct 59 swing by θ = 30 ° by the gear motor 74, and the cool air blown out of the front outlets 68a, 68b is supplied to the first seat. It is blown out near the head of the occupant sitting at 21. Therefore, the occupant can have a cool feeling by the direct wind.
[0044]
In a regular state (when the difference between the set temperature and the temperature inside the vehicle is within a certain range), the swing motor 67 of the face outlet 32 is driven, and the outlet grill 64 swings vertically θ = 40 ° via the shaft 66. Therefore, as shown in FIG. 13B, the cool air blown out from the face outlet 32 rises along the windshield 18. Further, the geared motors 74 of the front outlets 68a, 68b provided in the roof duct 59 are driven, and the outlet grills 70a, 70b swing forward and downward at θ = 30 ° via the shaft 71. Therefore, the cool air blown out from the face outlet 32 and the cool air blown out from the front outlets 68a and 68b collide near the upper portion of the windshield 18 and circulate near the first seat 21 to directly hit the occupant. In other words, local cooling can be prevented by indirect wind, and cool air is circulated by the swing to increase coolness.
[0045]
When only the first seat 21 is thus boarded, only the front air-conditioning unit 24 is operated and the rear air-conditioning unit 25 is stopped, thereby improving fuel efficiency and reducing the amount of cold air blown out from the face outlet 32. The cool air blown out from the front outlets 68a and 68b hits near the upper part of the windshield 18 and circulates near the first seat 21 so that the wind does not directly hit the occupant, but becomes indirect wind and becomes local. Cooling can be prevented, and the cool air does not escape to the rear of the cabin 18, so that the cooling efficiency can be improved.
[0046]
In the above embodiment, when only the first seat 21 is on, the mode is set to the front and rear zones, and only the front air conditioner unit 24 is operated, and the outlet grill 64 of the face outlet 32 swings. While the motor 67 swings the motor, the outlet grilles 70a, 70b of the front outlets 68a, 68b provided in the roof duct 59 swing by the geared motor 74. ), The swing motor 67 and the geared motor 74 are stopped, and the cool air blown from the outlet grill 64 is blown as direct wind near the chest of the occupant seated in the first seat 21, and the air is blown from the front outlets 68 a and 68 b. The blown cool air may be directly blown to the vicinity of the occupant's head.
[0047]
【The invention's effect】
As described above, according to the first aspect of the present invention, even when only the front seats are boarded and only the front air conditioner unit is operated, the cool air blown out from the instrument panel outlet is blown rearward of the passenger compartment. Without escaping, cooling efficiency can be improved and fuel efficiency can be improved.
[0048]
According to the second and third aspects, the cool air blown out from the instrument panel outlet and the ceiling outlet does not directly hit the occupant and becomes an indirect wind, thereby preventing local cooling.
[0049]
According to the fourth and fifth aspects, the cool air blown out from the instrument panel outlet and the ceiling outlet is agitated, and a cool feeling is obtained.
According to the sixth aspect, the wind blown out from the instrument panel outlet and the ceiling outlet is a direct wind with the louver stopped at the time of rising, and the blowout louver swings and becomes an indirect wind during the normal time. This has the effect of improving the cool feeling.
[Brief description of the drawings]
FIG. 1 is a schematic longitudinal sectional side view of a one-box car showing one embodiment of the present invention.
FIG. 2 is a schematic vertical sectional front view of the one-box car of the embodiment.
FIG. 3 is a vertical side view of the front air conditioner unit of the embodiment.
FIG. 4 is a vertical side view of the rear air conditioner unit of the embodiment.
FIG. 5 is a vertical side view of the face outlet of the embodiment.
FIG. 6 is an exemplary front view of the face outlet of the embodiment;
FIG. 7 is a schematic plan view and a side view of a front outlet provided in the roof duct of the embodiment.
FIG. 8 is a sectional view of a rear outlet provided in the side roof rail of the embodiment.
FIG. 9 is a schematic configuration diagram of a rear outlet provided in the side roof rail of the embodiment.
FIG. 10 is a schematic configuration diagram of a rear outlet provided in the side roof rail of the embodiment.
FIG. 11 is a block diagram of a control system of the embodiment.
FIG. 12 is an operation explanatory view of the embodiment.
FIG. 13 is an operation explanatory view of the embodiment.
FIG. 14 is a configuration diagram of an air conditioning system in a conventional one-box car.
[Explanation of symbols]
18 ... car room, 19 ... instrument panel, 21 ... first seat, 22 ... second seat, 23 ... third seat, 24 ... front air conditioner unit, 25 ... rear air conditioner unit, 32 ... face outlet, 68 ... front Outlet.

Claims (8)

A rear air conditioner that has a front seat at the front of the cabin and a rear seat at the rear, and a front air conditioner unit that blows air from the instrument panel outlet at the front of the cabin, and blows air from the ceiling outlet at the rear In a car air-conditioning system that installs a unit and air-conditions the cabin,
The instrument panel outlet is provided with a blowout louver that guides the wind blown out of the blowout port to the rear, and the ceiling blowout port is provided with a blowout louver that guides the wind blown out of the blowout port forward. An air conditioning system for an automobile, wherein an airflow is circulated around the front seat by hitting a wind blown from a ceiling outlet . The vehicle according to claim 1, wherein when the difference between the installation temperature of the vehicle compartment and the temperature inside the vehicle is within a certain range, wind blown from the instrument panel outlet and wind blown forward from the ceiling outlet are hit. Air conditioning system. The instrument panel outlet is provided with a blowout louver that guides the wind blown out of the blowout port above the windshield, and the ceiling blowout port is provided with a blowout louver that guides the wind blown out of the blowout port above the windshield, The air conditioning system for an automobile according to claim 1 , wherein the air blown from the instrument panel outlet and the ceiling outlet is hit near an upper portion of a windshield. The air conditioning system for an automobile according to any one of claims 1 to 3, wherein the wind blown from the instrument panel outlet blows obliquely upward toward a rear portion. The vehicle air conditioning system according to any one of claims 1 to 3, wherein the wind blown from the ceiling outlet blows obliquely downward toward a front portion. The instrument panel outlet is a swing motor, a shaft that is rotated by the swing motor, and a shaft that is provided in a lateral direction of the instrument panel outlet, and is provided on the shaft, rotates about the shaft, and rotates at a predetermined angle in the ceiling direction. The air conditioning system for an automobile according to any one of claims 1 to 3, wherein the air conditioning system comprises a blowout louver swinging at a speed . The air conditioning system according to any one of claims 1 to 3, wherein the ceiling outlet is provided with an outlet louver swinging at a predetermined angle in a horizontal direction. The wind blown from the instrument panel outlet and the ceiling outlet is a direct wind with a louver stopped at the time of rising, and an outlet louver swings and an indirect wind at a normal time. An air conditioning system for a vehicle according to any one of the above.

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