JPH02141326A - Air conditioner drainage system in cabin of agricultural vehicle - Google Patents

Abstract

PURPOSE:To easily and smoothly perform drainage by installing an air conditioning unit in a ceiling frame, dividing flow of drainage of the air conditioning unit to the front side and the rear side, and arranging respective pipings along the front and rear stanchions. CONSTITUTION:A cabin is arranged in the middle part of the body of an agricultural vehicle. In this case, an air conditioning unit 29 is installed in a ceiling frame connected to respective upper end parts of both front and rear stanchions for forming the cabin. Further, a high pressure pipe 31 and a low pressure pipe 33 are connected to the air conditioning unit 29, and also the high pressure pipe 31 is connected to the discharge part of a compressor 34 and the low pressure pipe 33 is connected to the suction part of the compressor 34 through a filter 35 and a condenser 36. Further, both front and rear drains 37, 38 are connected to the air conditioning unit 29, and also the front drain 37 is communicated to the hollow part 10 of a front stanchion, and the rear drain 38 becomes one body 40 through a three-way joint 39 and hereafter is communicated to the outside under a floor.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The field of application of this invention is the cabin of a riding agricultural machine such as a 1-Rakuta 1 riding rice transplanter.

[Prior art]

An air conditioner unit is installed in the center of the ceiling frame of the cabin, and the left and right drains provided on the left and right sides of the air conditioner unit are provided so as to communicate with one end of the hollow part 1 of the intermediate frame erected on the left and right sides of the cabin. −
The water droplets that were generated were being drained away.

[Problem to be solved by the invention]

In the above conventional technology, the left and right drains provided on the left and right sides of the air conditioner unit were provided so as to communicate with one end of the hollow part 1 of the intermediate frame erected on the left and right sides of the cabin. The problem was that it was relatively difficult to drain water because the problem occurred when the car body was in a horizontal state or when it was tilted to the left or right.

[Means to solve the problem]

This invention takes the following technical means to solve the problems listed in item L. In other words, in the cabin of a passenger agricultural machine that is installed in the vehicle body to secure an operating space around the driver's seat, the air conditioner unit is attached to the ceiling frame that connects the 1 end of the front column and the 1 end of the rear column of the cabin. 1-, and the drain of this air conditioner unit is branched into the left and right front drains and the rear drain, and the front drain is connected to the hollow part of the left and right front columns, and the rear drain is connected to the inside of the left rear column. The configuration was such that the pipes were installed together.

[Effect]

When you are working on a riding agricultural machine and the cabin gets hot and you need cool air, switch the air conditioner switch from the ventilation position to the cooling position.The compressor will operate and the refrigerant gas will flow through the high pressure pipe to the air conditioner unit 1. After being forced into the heat exchange section, the outside air sucked in by the air conditioner unit is cooled as it passes through the heat exchange section, and is blown out into the cabin as cold air. The water droplets condensed in the heat exchange section of the air conditioner unit are discharged downward from the left and right front drains, one of them, or the rear drain according to the direction of the vehicle body.

〔effect〕

This invention relates to a ceiling frame that connects the - end of the front support of the cabin and the end of the rear support in a cabin of a riding agricultural machine provided in the vehicle body in order to secure an operating space during cold operation. The air conditioner unit is installed, and the drain of this air conditioner unit is branched into the left and right front drains and the rear drain. The front drain communicates with the hollow part of the left and right front columns, and the rear drain runs along the inside of the left rear column. Because the pipes are connected together, there is sufficient distance between the air conditioner unit and the point where the water drops downward, and the drain can be installed at an angle that makes it easy to drain water without having to be very precise. However, the drain along the slope has more opportunities to drain water, making it easier to drain water.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

First, the configuration will be explained. A cabin 2 for securing a driving space is located in the second part of the agricultural tractor's body 1 from the middle to the rear, supporting the ceiling 5 and the roof 6 with front struts 3, 3 and rear struts 4, 4 for safety. In addition to having a common structure for the frame, there is a front window (not shown) between the front struts 3.3, a lift door and a side door (not shown) that can be opened and closed to the left and right between the front struts 3.3 and the rear struts 4.4. Ministry 111t)
A rear window 7, which can be opened and closed, is provided between the rear struts 4° and 4 to cover them. Front struts 3, 3 are step 8
An upright section is provided from the front side of the meter panel 9 to the front of the meter panel 9, and an oblique inclined section is connected to the two sections of this upright section so that the upper part is located at the rear. Hollow part 10.1 penetrating to the lower end of the upright part
0 is formed. The rear strut 4.4 is a hollow part (not shown)
The seat 1 is installed at the rear of the fenders 12 and 12 attached to the rear axle housing 11 and 11.
3, a fuel tank 14 is installed between the fenders 12, 12, and both left and right ends of the rear jVt 15 are installed between the seat 13 and the fuel tank 14 so that the upper side is higher than the fuel tank 14. The left and right sides of the rear window frame 16, which is attached to the fenders 12, 12 and provided along the J-side of the rear side wall 15, are attached along the back of the fenders 12, 12, and both left and right ends are attached to the rear side. Pillars 4, 4
It sticks to the inside of the bottom edge.

A damper 17 for adjusting the opening degree of the rear window 7 is provided between the rear column 4 on the left side and the rear window 7, with its lower end pivoted. A cover 18 that protrudes inward by about a diameter is then removably provided along the pillar 4, and the lower part of this cover 18 is once bent forward from the left end of the rear window frame 16 and then folded under the lower floor 19. It is detachably attached so as to communicate with the side and outside, and the upper end portion forms an inclined portion at the ceiling corner 20. Front strut 3.3 and rear strut 4゜4-
The ceiling frame 21 of the ceiling 5 attached to one end of the front frame 22.
The left and right side frames 23, 23 and the rear frame 24 are framed in a rectangular shape, and the front frame 22 and the rear frame 24 are arranged in the middle with vertical frames 25, 2.
5, the vertical frames 25, 25 are connected by the horizontal bars 26, 26, and the side frames 23, 23 and the vertical frames 25, 25 are connected by the horizontal bars 27, 27.
It is connected and configured. A ceiling member 28 is attached to the lower side of this ceiling frame 22 to constitute the ceiling 5, and the vertical frames 25, 2 of the ceiling 5 are
5, an air conditioner unit 29 is installed, and a high pressure pipe 31 is connected to the high pressure inlet 30 on the right side of the air conditioner unit 29.
A low pressure pipe 33 is connected to the low pressure outlet part 32, and the high pressure pipe 31 and low pressure pipe 33 are passed through the cover 18 and under the floor 19, and the high pressure pipe 31 is connected to the engine (not shown). The low pressure pipe 33 is connected in series to the suction part of the compressor 34 through a filter 35 and a condenser 36 installed near the radiator (not shown). is connected to. Also air conditioner unit 29
is configured so that the indoor air is discharged to the outside, and the outside air that is taken in is blown into the interior of the cabin 2 through a heat exchanger (not shown).

In the ventilation position of the air conditioner switch (not shown), air flows between the outside and the interior of the cabin 2, and in the cooling position, the compressor 34 is operated and refrigerant gas is sent to the heat exchange section. Further, the air conditioner unit 29 is provided with left and right front drains 37.37 on the front side, the lower portions of which communicate with the hollow portions 10.10 of the front struts 3, 3, and left and right rear drains 37.37 provided on the rear side of the air conditioner unit 29. The drains 38.38 are connected to a single rear drain 40 via the three-pronged joint 39, and this rear drain 40 is connected to the high pressure pipe 31. Together with the low pressure pipe 33, the rear drain 40 is inserted into the cover 18 to communicate with the outside of the lower floor 19 below. Therefore, the water droplets generated in the heat exchange section are removed from the front drains 37, 3 of the air conditioner unit 29.
7 and a rear drain 40 to be discharged to the outside of the vehicle body 1. And compressor 34
is covered by a roof 6 attached to a ceiling frame 21. The ceiling 5 and the roof 6 are shared by a cabin without an air conditioner and a safety frame. 641 is a heating device provided in front of the ceiling frame 21, and 42 is a gutter provided on the side of the roof 6.

Next, the effect will be explained. Agricultural 1 - When you are working in the farm on a tractor and the inside of the cabin 2 becomes hot and you need cool air, switch the air conditioner switch from the ventilation position to the cooling position, the compressor 34 will operate and the refrigerant gas will flow through the high pressure pipe 31. The outside air that is taken in by the air conditioner unit 1-29 is cooled as it passes through the heat exchange section, and is blown out into the cabin 2 as cold air6. - The refrigerant gas that has absorbed heat in the heat exchange section passes through the low-pressure pipe 30, leaks through the filter 35 in the middle, radiates heat in the condenser 36, and returns to the compressor 34. -1
Set the air conditioner switch to the cooling position as described in step 1.
~, the outside air is cooled by the heat exchange part of the air conditioner unit 29, and the cool air inside the cabin is blown out. When the vehicle body 1 is tilted so that the front side is lowered, the water droplets condensed in the heat exchanger flow from the front drain 37.37 to the hollow part 10.10 of the front strut 3.3, and the rear side becomes lower. When the vehicle body 1 is tilted, the rear drain 38
．． 38. Three-pronged join39. When the vehicle body 1 is tilted so that the left side is lower, the left front drain 37. Hollow part 10 of left column 3 and rear drain 38. When the vehicle body 1 is tilted so that the right side is lowered, the three-pronged joint 1-39 and the rear drain 40 are connected to the lower vehicle body 1 through the right front drain 37 and the hollow part 10 of the right support column 3, respectively. Drained.

In this embodiment, water 217 generated in the heat exchange part of the air conditioner unit 29 installed in the center of the ceiling frame 21 of the cabin
are branched at the front of the air conditioner units 1 to 29 depending on the inclination of the vehicle body 1, and are provided in the hollow portions 1 of the front struts 3, 3.
0, and a rear drain 40 that is branched off from the rear of the air conditioner unit 29.
Since the water can now be drained downward from the vehicle body 1 through the pipes, the piping at the ceiling frame 21 can be easily installed and water can be drained well.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view of an air conditioner switch, FIG. 3 is a plan view of the main body, and FIG. 4 is a rear view of the main body. Explanation of main symbols

Claims (1)

[Claims] (1) In the cabin of a passenger agricultural machine installed in the vehicle body to secure an operating space around the driver's seat, an air conditioner unit is attached to the ceiling frame that connects the upper end of the front pillar and the upper end of the rear pillar of the cabin, The drain of this air conditioner unit is branched into the left and right front drains and the rear drain, and the front drain is connected to the hollow part of the left and right front struts, and the rear drain is piped along the inside of the left rear strut. An air conditioner drainage device featuring: