JPS6255212A - Air-conditioning device for traction vehicle - Google Patents

Abstract

PURPOSE:To prevent dust from being sucked into an air-conditioning device for a farm tractor or the like, by forming an air-intake port in the front upper transverse frame of a cabin so that introduced air is led into the air conditioning device through left and right frames, a rear frame and a duct in a roof. CONSTITUTION:A front upper transverse frame 5, a rear upper transverse frame 6, and right and left longitudinal frames are formed in rectangular cylinder shapes, and an outside air intake port 12 is formed in the front upper transverse frame 5 and are communicated with the upper parts of support struts 3, 3, the front end parts of the right and left longitudinal frames and both end openings 13 of the front upper transverse frame 6. Further, a communication hole 17 is formed in the rear upper transverse frame 6 at the center thereof, and is communicated with the rear section of an air-conditioning device 18 through a duct 23 having a lid 23 provided with a handle. with this arrangement in which the outside air inlet port is directed forward, it is possible to prevent dust swirling up from being sucked, thereby it is possible to reduce the clogging of a filter.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to an air conditioner used in agricultural tractors, construction vehicles, and the like.

←) Prior Art Conventionally, a structure as shown in FIG. 1 has been commonly used for power vehicles such as agricultural tractors.

That is, the upper part of the support column erected around the cockpit is connected by the front upper horizontal frame (c) and the rear upper horizontal frame θ0, and the left and right sides are connected by vertical frames (not shown in the drawing) along the longitudinal direction. A roof equipped with an air conditioner unit 071 is mounted on the upper part of the cabin frame which is connected to the cabin frame in this way, and an outside air intake port 071 is formed at the lower part of the rear upper horizontal frame (c). This air conditioner unit 071 is configured to suck in air while
The two are connected via a duct formed by assembling the frame into a rectangular tube shape.

(c) Problems to be solved by the invention In such conventional devices, the dust kicked up when the vehicle moves forward is sucked directly into the outside air intake port at the rear of the vehicle, and a filter installed in front of the air conditioner unit is used. This had the disadvantage of bringing the timing of the 6-car deadline earlier than expected.

B) Means for Solving the Problem The present invention aims to provide an air conditioning mechanism that can solve the above-mentioned problem without making major changes to the structure of the conventional device.

For this reason, the following technical measures were taken. In other words, there are four pillars (3) (3) (4) erected around the cockpit.
) (4) and these pillars (3) (3) (4) (
4) Tie the upper part to the front, back, left and right frame (5) (6) (
7) (8) constitutes a cabin frame, and a roof (9) is placed on the upper part of this cabin frame to constitute a cabin (2).
) is formed with an air intake (2), and this air intake Q'
The air flowing in from 4 is guided into the left and right frames (7) (8) and the rear upper horizontal frame (6), and is then passed through the duct (e) installed in the roof (9) to the air conditioner unit marked α. An air conditioner for a power vehicle is characterized in that the air conditioner is configured to feed air into an inlet.

(→ Examples Hereinafter, the present invention will be described in detail based on the drawings.

First, to explain the configuration, (1) is a tractor, (2)
) This cabin (2) has four pillars erected around the cockpit (3) (3) (4) (4)
and a frame (5) (6) (7
) (s) and the roof (9) etc. placed on top of this, these supports (3) (3) (4) (4)
The space between the inside and outside of the cabin (1) is cut off by being covered with transparent window glass, and the operator can get on and off by rotating the door 0ηαυ around the hinge 0000 provided on the front column (3). It is configured so that it is possible.

Front upper horizontal frame (5), rear upper horizontal frame (6)
, the left vertical frame (7) and the right vertical frame (8) both have a rectangular cylindrical shape with openings at both ends, and an outside air intake port α is provided in the front center of the front upper horizontal frame (5). Pillar (3) (3) Top and left and right vertical frames (7) (
8) is provided with a through hole a→ which can communicate with the openings α303 at both ends of the front upper horizontal frame (5).

On the other hand, on the rear side of the vertical frame (7) (s), a through hole α→ that can communicate with the opening αO0 at both ends of the rear upper horizontal frame (6) is provided, and this rear upper horizontal frame A through hole Q is provided in the central upper surface of the frame (6) to allow air to escape. Therefore, the air flowing in through the outside air intake port (a) of the front upper horizontal frame (5) will flow into this frame (5).
A passage is formed such that air passes through the left and right vertical frames (7)'(g), and further passes through the through holes αη of the rear upper horizontal frame (6) to escape upward.

The air conditioner unit 0→ is fixedly supported at the center of the roof frame 0 Samurai which is shaped like a grid. It is bolted and fixed to the stay (E)...

Further, the roof (9) is removably attached using a flange 0η formed by horizontally folding back the outer peripheral edge of the roof frame 0.

(A) is the seal rubber, and the frame (5) (6) (7
) (s) It is interposed between the upper surface and the lower part of the outer peripheral edge of the roof (9) to prevent rainwater etc. from entering into the roof (9).

The inner part of the roof (9) is a duct that connects the rear part of the air conditioner unit (to) and the through hole α of the rear upper horizontal frame (6), and the lower part of the rear end of the duct (e) A filter (good) is installed, and a lid (c) with a handle is rotatably supported in the middle of this duct (c), and the operator grasps the handle from inside the cabin to open the lid (c). If you stand it up, the external power supply will be stopped and only indoor air will be circulated, while if you tilt it forward, outside air will be introduced into the air conditioner unit (toward) and fresh outside air will be fed into the air conditioner unit (to). It is configured to send.

(c) is a bellows-shaped duct drawn out from the front side of the air conditioner unit (to), and is connected to the air outlet (c) of the cockpit (b).

The lower part of the front end of the cockpit (cockpit) is rotatably attached to the front upper horizontal frame (5), and instruments such as an inclinometer and a clock are embedded in the front side. The ridge shown in Figure 7 is the drain grommet, and the front support (3) (3)
Under normal conditions, this grommet holder is closed, but when a certain amount of rainwater accumulates, the grommet (A) is pushed open by its weight and drains the water.

In addition, a drainage hole (7) is provided on the inner side of the upper part of the front support column (3) (3) Q at a portion connected to the front upper horizontal frame (5).

In addition, in order to guide all the air sucked in from the outside air intake port α of the front upper horizontal frame (5) to the air conditioner unit (to) side, the lower part of the rear support column (4) (4) is closed with a grommet, etc. It is better to have less air escape. When the tractor (1) moves forward with this configuration, outside air flows through the outside air intake port α at the front of the machine frame (5) (6) (
7) (8), and this air flows through the filter (
c), is cleaned, and reaches the air conditioner unit a frame.

Then, cold air and warm air are sent out from the air outlet (c) at the front of the cabin (2) towards the operator's feet and the inside upper surface of the windshield.

(F) Effects of the Invention Since the present invention is configured as described above, it has the following technical effects. In other words, the structure is such that outside air is taken in from the front of the aircraft, purified by the filter at the rear (c), and then guided into the air conditioner unit (to), allowing air with less dust to be taken in, ) does not get clogged frequently, and therefore the filter (
It is economical because the time for replacing c) can also be delayed.

In addition, the frame (5) can be used without major improvements to conventional equipment.
(6) (7) Provide a small ventilation hole in (s),
Since the ventilation duct is formed by using the frame (5) (6) (7) (8) as is, there is no need for a special duct mechanism, and this makes it possible to provide an air conditioner at a low cost. .

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a conventional device, FIG. 2 is a side sectional view showing the structure of the air conditioner according to the present invention, and FIG. 3 is a perspective view of the main parts.
4 is a side view, FIG. 5 is a perspective view, FIG. 6 is a side view, FIG. 7 is a sectional view, and FIG. 8 is a side view. Explanation of symbols (1) Tractor (2) Cabin (3) Front support (4) Rear support (5) Front upper horizontal frame (6) Rear upper horizontal frame (7) Left vertical frame (8) Right vertical frame ( 9) Roof α air intake port α8) Air conditioner unit

Claims (1)

[Claims] Four pillars (3) (3) (
4) (4) and these pillars (3) (3) (4) (4)
Frame (5) (6) (7) (8) that connects the upper part to the front, back, left and right
) constitutes a cabin frame, and a roof (9) is placed on the top of this cabin frame to constitute a cabin (2), and the front upper horizontal frame (5) has an air intake port ( 12), and guides the air flowing in from this air intake (12) into the left and right frames (7) and (8) and the rear upper horizontal frame (6), and further a duct installed in the roof (9). (23) through the air conditioner unit (1
8) An air conditioner for a power vehicle, characterized in that it is configured to send air into the air inlet.