JP3036593B2 - Vehicle air conditioner device - 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.

[0002]

2. Description of the Related Art Conventionally, an air conditioner provided in a power farming machine such as a tractor is installed on a ceiling of a cabin. Then, during cooling, the refrigerant is compressed by a compressor provided in the engine room, pressure-fed to an evaporator of an air conditioner on the ceiling, and blown out into the cabin by a blower. On the other hand, at the time of heating, the hot air of the heater core is sent under pressure to the air conditioner on the ceiling, and the blower blows warm air into the cabin.

[0003]

Conventionally, an air conditioner provided in a power farming machine is installed on the ceiling of the cabin as described above, so that a large space in the cabin can be ensured, and the air conditioner can be kept above the operator during cooling. Since cool air is blown out from the chiller, the cooling effect of the operator is good. However, since the piping from the compressor is long and the height difference of the piping is large, the horsepower loss of cooling and heating is large and the cost is increased. In addition, during heating, hot air is blown from above the operator, so that the operator often feels uncomfortable.

[0004] Therefore, there arises a technical problem to be solved in order to eliminate the discomfort at the time of heating, to secure a large space in the cabin, and to reduce the horsepower loss of cooling and heating. The purpose is to solve the problem.

[0005]

SUMMARY OF THE INVENTION The present invention has been proposed in order to achieve the above-mentioned object, and a gate-shaped base frame is provided at a rear portion of an engine, and a substantially middle portion of an air conditioner is attached to the engine. A suction passage is provided on one side of the conditioner from an outside air suction port provided on the front side of the base frame to an inlet of an evaporator provided on the rear side of the base frame, and an evaporator and a heater are sequentially arranged from the rear center to the front of the air conditioner. A core and a blower are arranged in series, and further, on the other side of the air conditioner, a blowout passage is provided from a blower provided on the front side of the base frame to an indoor blowout port provided on an operation panel on the rear side of the base frame. It is an object of the present invention to provide an air conditioner device configured to blow air at a predetermined temperature from an indoor outlet.

[0006]

Since the air conditioner of the present invention is mounted on a gate-shaped base frame provided at the rear of the engine, it is installed between the rear of the engine room and the operation panel of the cabin. Outside air sucked from an outside air intake port provided on the front side of the base frame passes through an intake passage provided on one side of the air conditioner, and enters an evaporator inlet at the rear of the air conditioner provided on the rear side of the base frame. be introduced. The introduced outside air travels from the rear to the front of the evaporator, heater core, blower and air conditioner, and is converted to a predetermined temperature. A blower provided on the front side of the base frame blows air at a predetermined temperature from an indoor outlet provided on an operation panel of the cabin through an outlet passage provided on the other side of the air conditioner.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 and FIG. 2 show an engine room of a tractor and a part of an operation unit of a cabin as an example of a power agricultural machine, and reference numeral 11 denotes an engine.
A compressor 12 is provided in front of the engine 11,
In the plan view of FIG. 2, a muffler 13 is provided on the left side of the engine 11. Then, a gate-shaped base frame 14 is erected on the rear part of the engine 11, and a substantially intermediate portion of the air conditioner 15 is attached to the base frame 14.

FIGS. 3 and 4 show the internal structure of the air conditioner 15 of the present invention. A suction passage 16 is provided on one side of the air conditioner 15 in the front-rear direction.
An outside air suction port 17 is opened at the front side of the base frame 14, and a shutter 18 for switching between outside air introduction and inside air introduction is provided at the rear side of the base frame 14 of the suction passage 16. By rotating the shutter 18, the entrance 1 of the evaporator
9 so that it is possible to select whether to introduce outside air or room air in the cabin. In the illustrated state, the shutter 18 closes the indoor suction port 20, and the outside air from the outside air suction port 17 is introduced into the inlet 19 of the evaporator.

An evaporator 21, a heater core 22, and a blower 23 are sequentially arranged in series from the rear to the center of the air conditioner 15 at the stage where the outside air or room air introduced into the inlet 19 of the evaporator passes through the evaporator 21. It is cooled and then heated as it passes through the heater core 22. It is natural that the cooling temperature in the evaporator 21 and the heating temperature in the heater core 22 are automatically adjusted as appropriate so as to be a desired temperature set by an operation unit (not shown) of the air conditioner 15.
Therefore, the air reaching the blower 23 from the inlet 19 of the evaporator is converted to a predetermined temperature set by the operator.

A blow passage 24 is provided on the other side of the air conditioner 15 in the front-rear direction, and a shutter 25 for switching the blow direction from the blower 23 on the front side of the base frame 14 to the rear side of the base frame 14. The air that has been converted to a predetermined temperature is pumped out. The air outlet of the air conditioner 15 is branched into an upper indoor outlet 26 that blows to the operator's face in the cabin and a lower indoor outlet 27 that blows to the operator's feet in the cabin. By switching operation, air is blown from one of the outlets or both outlets. In the illustrated state, the shutter 25 closes the lower indoor outlet 27 and air is blown from the outlet passage 24 to the upper indoor outlet 26.

FIG. 5 is a front view of the front of the fuselage as viewed from the driver's seat of the cabin. For convenience of explanation, the steering device and various meters are omitted. At the top of the operation panel 28,
A display unit 29 for mounting various meters and informing an operator of a work state is provided. Grills 30 and 30 are provided on both lower sides of the display unit 29, and the air conditioner 1
The air duct converted to a predetermined temperature by the air conditioner 15 is connected to the left and right grills 30 and 30 by branching the duct from the upper indoor outlet 26 to the left and right.
It is formed so as to be blown out into the cabin from 30. Further, an operating unit 3 for attaching an operating lever 31 and an ignition key 32 of the working machine to a lower portion of the left and right grills 30, 30.
3 and 34 are provided. Although not shown, a steering device is attached to the central recess 35. Then, a duct is connected to the lower part of the operation parts 33 and 34, that is, the foot position of the opacitor, from the lower indoor outlet 27 of the air conditioner 15 so that the air converted to a predetermined temperature is blown to the foot of the operator. Form.

As shown in FIG. 5, the display unit 29 is disposed above the operation panel 28 in the cabin, and the grilles 30, 30 are located at the left and right positions between the left and right operation units 34 and 35.
In order to perform air blowing and blowing inside the air conditioner 15, if the shutter 25 is in the state shown in FIG. 4, the visibility of the display unit 29 and the operability of the operation units 34 and 35 are not hindered. Air of a predetermined temperature can be blown from the left and right grills 30 and 30 in the direction of the face and hands of the operator very effectively. Also, the shutter 25 described above is used.
If you switch to, indoor ventilation is performed at the feet of the operator,
The heating effect at the time of heating is improved, and the discomfort of the operator is also eliminated.

The present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified ones.

[0014]

According to the present invention, as described in detail in the above embodiment, the air conditioner is mounted on the gate-shaped base frame provided at the rear of the engine. An air conditioner is installed between them, and the installation space is small. Also, unlike the conventional configuration provided on the ceiling of the cabin, the piping from the compressor is extremely short, and the horsepower loss can be reduced.

Further, the outside air introduced from the outside air suction port is:
The air is introduced from the front side of the base frame to the rear side of the base frame through the suction passage provided on one side of the air conditioner, and passes through the evaporator, heater core, and blower arranged in series in this order, and the front side of the base frame The air is then converted to a predetermined temperature, and further blown to an indoor outlet provided on an operation panel through an outlet passage provided on the other side of the air conditioner. That is, the present invention has various effects such as that the air flow turns several times back and forth and passes through the inside of the air conditioner, so that the air conditioner can be downsized and contribute to space saving.

[Brief description of the drawings]

FIG. 1 is a side view of an essential part of an engine room and a cabin of a tractor, showing one embodiment of the present invention.

FIG. 2 is a main part plan view showing a part of an engine room and a cabin of the tractor.

FIG. 3 is a cross-sectional plan view of the air conditioner.

FIG. 4 is a vertical sectional side view of a blowing passage portion of the air conditioner.

FIG. 5 is a front view showing an operation panel in the cabin.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Engine 14 Base frame 15 Air conditioner 16 Intake passage 17 External air intake 19 Evaporator inlet 21 Evaporator 22 Heater core 23 Blower 24 Blow-out passage 26 Upper room outlet 27 Lower room outlet 28 Operation panel

Claims (1)

(57) [Claims] 1. A gate-shaped base frame is provided at a rear portion of an engine, and a substantially middle portion of an air conditioner 15 is attached to the air conditioner. A suction passage is provided to the inlet of the evaporator provided on the rear side of the air conditioner, an evaporator, a heater core, and a blower are sequentially arranged in series from the rear of the center of the air conditioner to the front, and further on the other side of the air conditioner. An air conditioner, wherein an air outlet passage is provided from a blower provided on a front side of a base frame to an indoor outlet provided on an operation panel on a rear side of the base frame, and air at a predetermined temperature is blown from the indoor outlet. Conditioner device.