JP2629477B2 - Vehicle air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner applied to vehicles for construction, industry, agriculture and the like.

[0002]

2. Description of the Related Art Generally, an air conditioner applied to a vehicle for construction, industry, agriculture, or the like has an air conditioner including a heat exchanger (refrigerant evaporator, heater core), a blower and the like in order to ensure forward visibility. The unit is installed on the cabin floor behind the driver's seat. Inside the cabin, a cool air outlet that discharges cold air supplied from the air conditioning unit through the cold air duct from the driver's seat rear side to the upper body of the occupant, and hot air supplied from the air conditioning unit through a hot air duct. A warm air outlet is provided near the feet of the occupant.

[0003]

However, in the above-described air conditioner, since the cool air outlet is provided only behind the driver's seat, the cool air discharged from the cool air outlet is used to cool the occupant's back and shoulders. , The back and mainly the back side of the occupant. Therefore, the conventional air conditioner has a problem that a good cooling feeling cannot be obtained.

[0004] The present invention has been made based on the above circumstances, and an object of the present invention is to provide a vehicle air conditioner with improved cooling feeling.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is provided behind a driver's seat in a cabin,
An air conditioning unit having a first discharge port and a second discharge port for discharging blast air, a cool air outlet opening behind the driver's seat, and opening near a foot of an occupant seated in the driver's seat; A hot air outlet, a second cold air outlet opening forward or to the side of an occupant seated in the driver's seat;
A rear-side airflow path that guides blast air from the discharge port to the cold-air outlet, a front-side airflow path that guides blast air from the second discharge port to the hot-air outlet, and a front-side airflow path. A branch air passage for branching and introducing air to the second cool air outlet, a first damper for opening and closing the rear air passage, and an air passage route from the second discharge port to the hot air outlet. And a second damper for switching a blowing path leading from the second discharge port to the second cool air outlet, and a connecting means for connecting the first damper and the second damper. The first damper opens the rear air passage, and the second damper opens the first air passage through the connecting means so as to open an air passage leading from the second discharge port to the second cool air outlet. Driving a damper and the second damper,
During the heating operation, the first damper closes the rear air passage, and the second damper opens via the connection means so as to open an air passage leading from the second discharge port to the hot air outlet. Technical means includes one driving means for driving the first damper and the second damper.

[0006]

In the cooling operation, the first damper opens the rear air passage and the second damper opens the air passage leading from the second discharge port to the second cool air outlet (at this time, the second discharge port is opened). The first damper and the second damper are driven such that the air passage leading to the hot air outlet is closed. Thereby, the cool air discharged from the first discharge port is guided to the cool air outlet opening to the rear of the driver's seat through the rear air passage,
The cool air discharged from the second discharge port is guided to the second cool air outlet opening to the front or side of the occupant sitting in the driver's seat through the front air passage and the branch air passage. As a result, the cool air is supplied from the front or side of the occupant as well as the rear side of the occupant.

[0007] Since the first damper and the second damper are connected by the connecting means, the first damper and the second damper can be driven by one driving means in conjunction with each other.

[0008]

Next, an air conditioner for a vehicle according to the present invention will be described with reference to an embodiment shown in the drawings. FIG. 1 is an overall configuration diagram of the air conditioner. The air-conditioning apparatus 1 of the present embodiment
Cabin 2 is applied to vehicles for industrial and agricultural use.
An air conditioning unit 4 is installed behind the driver's seat 3 located substantially at the center of the vehicle. By installing the air-conditioning unit 4 behind the driver's seat 3, good front visibility can be obtained, and within the narrow cabin 2 (generally about 1.5m in front and rear, about 1m in right and left, about 1.8m in height). Thus, a foot space for the occupant sitting in the driver's seat 3 can be secured.

The air conditioning unit 4 has a unit case 7 in which an air inlet (not shown) and conditioned air discharge ports 5 and 6 are formed. In the unit case 7, a heat exchanger (not shown) and a blower are provided. 8 are accommodated. The air conditioning unit 4 is a suction type in which a heat exchanger is arranged on the upstream side of the blower 8.

The outlets 5 and 6 are opened at two places toward the upper side and the front side of the cabin 2, and the outlet 5 opening upward is provided between the two outlets 5 and 6. Is provided so as to be able to be closed by a first damper 9 disposed in the first position. The first damper 9 has a position for closing the discharge port 5 (a position indicated by a two-dot chain line in FIG. 1) and a position for contacting a stopper 10 provided at the center of both discharge ports 5 and 6 (see FIG. 1). (Position indicated by a solid line).

The discharge port 5 is connected to a cool air duct 12 (rear air passage of the present invention) which communicates with a cool air outlet 11 opened at the rear of the driver's seat 3. An air duct 14 leading to a mode switching box 13 for switching between the hot air outlet 17 and the second cold air outlet 20) described above.
Is connected. This mode switching box 13 is
It is provided in a side console box (not shown) installed on the right side of the.

The mode switching box 13 has an inlet 15 for air supplied through the air duct 14, an outlet 16 opening upward, and a temperature opening near the feet of an occupant sitting in the driver's seat 3. A wind outlet 17 is provided,
Inside the mode switching box 13, a second damper 18 for switching a blowing path (described below) is incorporated.
The front air passage of the present invention is formed by the air duct 14 and the mode switching box 13.

[0013]

The outlet 16 of the mode switching box 13 is opened to the upper body side of the occupant seated in the driver's seat 3 via a branch duct 19 (branch air passage of the present invention) (in this embodiment, the side console box has It is communicated with a second cold air outlet 20 which opens on the upper surface). The second damper 18 is connected to the outlet 1
6 between a position where the internal passage leading to the hot air outlet 6 is blocked (a position indicated by a two-dot chain line in FIG. 1) and a position where the internal passage leading to the hot air outlet 17 is closed (the position indicated by the solid line in FIG. 1). It is movably provided. In other words, it is possible to switch between the air blowing path leading from the outlet 6 to the hot air outlet 17 and the air blowing path leading from the outlet 6 to the second cool air outlet 20.

The mode switch box 13 is set to "FOOT" by an operation lever 22 of a controller 21 (drive means of the present invention) arranged on the upper surface of the side console box.
The side (the position shown by the dashed line in FIG. 1) and the “FACE” side (the position shown by the solid line in FIG. 1) can be selected. For example, by selecting the “FOOT” side, the second damper 18 blocks the internal passage to the outlet 16, and the blast air supplied to the mode switching box 13 is blown out from the hot-air outlet 17. By selecting the “FACE” side, the second damper 18 blocks the internal passage to the hot air outlet 17, and the blast air supplied to the mode switching box 13 is It is blown out from the cool air outlet 20.

The above-mentioned first damper 9 and second damper 18
Includes drive levers 9a, 18a that rotate integrally with the respective dampers 9, 18, and the drive levers 9a, 18a
Are connected by a wire cable 23 (connection means of the present invention), and the first damper 9 and the second damper 18 are provided so as to interlock with each other. The drive lever 9a of the first damper 9 is connected to an operation lever 22 of a controller 21 via a cable 24.
When the “OT” side is selected, the discharge port 5 is closed and the discharge port 6 is opened. Similarly, “FAC”
When the “E” side is selected, the drive is driven to a position where it comes into contact with the stopper 10 to open both the discharge ports 5 and 6.

Next, the operation of this embodiment will be described. Now, if the outlet mode is set to the “FOOT” side, the first damper 9 is driven to a position to close the discharge port 5. The air that has passed through the heat exchanger (heater core) and is heated is supplied from the discharge port 6 to the mode switching box 13 through the ventilation duct 14.

In the mode switching box 13, since the second damper 18 is driven to a position to block the internal passage to the outlet 16, the warm air supplied to the mode switching box 13 is supplied to the hot air outlet 17. It is blown out near the occupant's feet.

Thereafter, when the occupant sets the air outlet mode to the "FACE" side with the cooling operation, the operation lever 22
The first damper 9 is rotationally driven integrally with the drive lever 9a to a position where the first damper 9 comes into contact with the stopper 10 via a cable 24 connected to the first lever 9a. With the rotation of the first damper 9, the second damper 18 is integrated with the drive lever 18 a via the wire cable 23 connecting the drive lever 9 a and the drive lever 18 a to the hot air outlet 17. It is rotationally driven to a position where the passage is blocked.

As a result, the cooled air that has passed through the heat exchanger (refrigerant evaporator) with the operation of the blower 8 is discharged from both the discharge port 5 and the discharge port 6. The cool air discharged from the discharge port 5 is guided to the cool air outlet 11 through the cool air duct 12, and is blown out from the cool air outlet 11 to the rear side of the occupant. Further, the cool air discharged from the discharge port 6 is supplied to the mode switching box 13 through the blower duct 14, and then guided from the outlet 16 to the second cool air outlet 20 through the branch duct 19. The air is blown out from the second cold air outlet 20 toward the front and side of the occupant.

As described above, by setting the air outlet mode to the "FACE" side during the cooling operation, cool air is supplied from the front side and the rear side of the occupant, so that a good cooling feeling can be obtained. it can.

Although the controller 21 of the present embodiment employs a drive transmission system using the cable 24, an electric drive system using an electric actuator such as a servomotor may be used. Although the wire cable 23 is used as the connecting means between the drive lever 9a and the drive lever 18a, a rod (steel wire) may be used. Although the air-conditioning unit 4 of the suction type is illustrated, a push-in type in which a heat exchanger is arranged downstream of the blower 8 may be used.

[0023]

According to the present invention, in addition to the cold air outlet provided behind the driver's seat, a second cold air outlet opening to the front or side of the occupant is provided, so that the rear side of the occupant is provided. At the same time, cold air can be supplied from the front or side of the occupant. As a result, the cooling feeling can be improved as compared with the conventional air conditioner in which the cool air is supplied only to the back of the occupant, the shoulder, and the back, and mainly to the back of the occupant.

Further, the first damper and the second damper are linked to each other, so that the first damper and the second damper can be driven by one driving means. For this reason, it is possible to suppress an increase in cost as compared with a case where each damper is independently driven by each driving unit.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an air conditioner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 2 Cabin 3 Driver's seat 4 Air conditioning unit 5 Discharge port (1st discharge port) 6 Discharge port (2nd discharge port) 9 1st damper 11 Cold air outlet 12 Cold air duct (rear side ventilation) 13) Mode switching box (front side air path) 14 Air duct (front side air path) 17 Hot air outlet 18 Second damper 19 Branch duct (branch air path) 20 Second cold air outlet 21 Controller (drive) Means) 23 Wire cable (connection means)

Claims (1)

(57) [Claims] 1. A is installed in the driver's seat rearward in the key Yabin, feed
It has a first outlet and a second outlet for discharging wind air
That the air-conditioning unit, the cold air outlet port opened to the rear of the front SL driver's seat, and before Symbol operation opening near the feet of the passenger seated in the seat hot air for the air outlet, the occupant seated in front SL driver's seat A second cool air outlet that opens forward or sideways, and guides the blown air from the first outlet to the cool air outlet.
Ku and rear airflow path, guiding the air blown from the second outlet port to the hot air for the air outlet
A front side air passage, and a branch from the front side air passage to the second cool air outlet.
A branch ventilation path for guiding the ventilation air, a first damper for opening and closing the rear ventilation path, and a ventilation path leading from the second discharge port to the hot-air outlet.
Path and the second discharge port to the second cool air outlet.
A second damper for switching between the first damper and the second damper, the first damper being connected to the rear side during a cooling operation.
Opening an air passage, and the second damper is connected to the second discharge port
Open the air passage leading to the second cool air outlet from
The first damper and the second damper via the connecting means .
During the heating operation, the first damper is driven forward.
The rear side air passage is closed, and the second damper is
Open the ventilation path leading from the discharge port to the hot air outlet
So that the first damper and the
An air conditioner for a vehicle, comprising: one driving unit that drives a second damper .