JPH0516657A - Air conditioner of vehicle cabin - Google Patents

Abstract

PURPOSE:To prevent the cold blast of an air conditioner from being concentrated on the head and the face of an operator in a cabin by enabling the cold blast to be discharged from one side to the center of the breast of the operator. CONSTITUTION:In a vehicle cabin having an air conditioning unit 3 provided on a ceiling portion 2, a pair of right and left hollowed intermediate stanchions 6 provided in the middle of the longitudinal direction thereof, and a driver's seat 7 provided at the rear portion thereof, the cold blast discharge duct 13 of the air conditioning unit 3 is connected to the upper portion of each intermediate stanchion 6 and a cold blast blowout hole 19 is provided on the indoor side of each intermediate stanchion 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for a vehicle cabin, and is particularly suitable for construction of agricultural tractors, wheel loaders, etc., and industrial vehicles.

[0002]

2. Description of the Prior Art In tractor cabins,
The air-conditioning unit is installed on the ceiling, and the cold air outlet is installed on the ceiling of the cab.

[0003]

In the conventional structure as described above, cold air is concentrated on the operator's head and face during cooling, which is uncomfortable, and tiredness and irritability are caused by long-time work. It may happen. Therefore, an object of the present invention is to provide an air conditioner capable of hitting the entire upper half of the body centering on the chest without the cool air being focused on the operator's head or face.

[0004]

[Means for Solving the Problems] The technical means taken by the present invention to achieve the above-mentioned object is to equip a ceiling portion 2 with an air conditioner unit 3 and to form a hollow left-right pair in the front-rear direction intermediate portion. Equipped with an intermediate support 6 and the driver's seat in the rear
In the vehicle cabin provided with 7, the cold air discharge duct 13 of the air conditioner unit 3 is connected to the upper part of the intermediate support column 6 and the cold air outlet 19 is provided on the indoor side of the intermediate support column 6.

[0005]

[Operation] The cool air discharged from the air conditioner unit 3 flows into the pair of left and right intermediate columns 6 through the cold air exhaust duct 13 from the upper part, passes through the intermediate columns 6, and is provided on the indoor side of the intermediate columns 6. It is discharged indoors from the cold air outlet 19. Therefore, the cool air can be discharged from the left and right sides of the operator in the rear driver's seat 7 around the chest, which is comfortable.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes an integrated cabin mounted on the rear part of the vehicle body of the tractor, and an air conditioner unit 3 is arranged on a ceiling part 2 thereof, and a pair of left and right front columns 4 and a pair of left and right rear columns 5 are provided. An intermediate strut 6 is arranged in the middle, a driver's seat 7 is arranged in the rear part, an entrance / exit door 8 is arranged between the front strut 4 and the intermediate strut 6, and an intermediate strut 6 and a rear strut 5 are arranged. A side window glass 9 is arranged between them.

As shown in FIG. 2, a pair of the air conditioner units 3 are provided on the left and right sides of the ceiling part (2), and the operator's overhead space is wide, and the indoor air intake port 10 ( Alternatively, a fan 11 for introducing the inside air (or the outside air) from the indoor air inlet 4 and the outside air (which can be switched by the switching damper) is provided, and the heat exchanger 12 of the cooling and heating mechanism and the cool air exhaust duct 13 are provided in the middle part. In addition, the hot air exhaust duct 14 and the controller 15 are provided in the front part. The cooling and heating mechanism reverses the direction of the refrigerant flow and is a heat exchanger.
Although a heat pump type in which cooling and heating can be switched by using 12 as an evaporator or a condenser is adopted, an evaporator may be used as the heat exchanger and a heater may be separately provided. A warm air outlet 16 is formed in the lower front portion of the warm air discharge duct 13 so as to be oriented substantially along the windshield between the front columns 4.

As shown in FIG. 3, the intermediate strut 6 is hollow and comprises a U-shaped main body 17 having an opening facing the inside of the room, and a cover 18 for closing the opening of the main body 17. The cold air exhaust duct 13 is connected to the upper end of the intermediate column 6, and the lower end of the intermediate column 6 is closed. Further, the cover body 18 is provided with a pair of upper and lower cool air outlets 19 which are vertically long air outlet grilles, and cool air from the air conditioner unit 3 is discharged from the cold air outlet 19 through the intermediate support 6. It is like this. The cold air outlet 19 can change the wind direction forward and backward (and 1 or up and down), and has a shutter so that the opening amount can be adjusted.

[0009]

According to the present invention, the cold air discharged from the air conditioner unit 3 is introduced from above into the pair of left and right intermediate columns 6 through the cold air exhaust duct 13 and passes through the intermediate columns 6 to Since the cool air outlet 19 provided on the indoor side of the intermediate column 6 is discharged into the room, the cool air can be discharged from the left and right sides of the operator in the rear driver's seat 7 mainly around the chest, and the cool air can be discharged to the head or Comfortable without focusing on the face.
Further, since the pair of left and right intermediate columns 6 of the cabin 1 are used, the cost does not increase.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional view of a cabin.

FIG. 2 is a schematic front sectional view of a cabin ceiling portion.

3 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 2 Ceiling part 3 Air conditioner unit 6 Middle support 7 Driver's seat 13 Cold air exhaust duct 19 Cold air outlet

Claims (1)

Claims: 1. A ceiling part (2) is provided with an air conditioner unit (3), and a hollow middle pair of left and right intermediate columns (6) is provided at an intermediate part in the front-rear direction, and a rear part. In a vehicle cabin equipped with a driver's seat (7), the cold air exhaust duct (13) of the air conditioner unit (3) is connected to the upper part of the intermediate column (6) to cool the indoor side of the intermediate column (6). An air conditioner for a vehicle cabin, which is provided with a wind outlet (19).