JP4051456B2 - Air conditioner for moving vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air conditioner for a moving vehicle.
[0002]
[Prior art]
Conventionally, a cockpit of a moving vehicle such as a tractor or a combine is often covered with a cabin or a sun visor. In order to improve the comfort in the vicinity of the cockpit, various electrical devices such as an air conditioner and an acoustic device are attached. Along with this, it is performed to efficiently use the space near the cockpit by storing the air conditioner, the audio equipment and the wiring thereof in a compact manner.
[0003]
[Problems to be solved by the invention]
If you install a refrigerant-type air conditioner that keeps the cockpit at about 25 degrees Celsius regardless of the outside air temperature, the cockpit becomes a comfortable space. In such a refrigerant-type air conditioner, a compressor, condenser, and evaporating dish are used. Since there are many related accessories such as a heater and an evaporator, the whole is expensive.
[0004]
Accordingly, an object of the present invention is to provide an inexpensive air conditioning system in a cockpit of a moving vehicle such as a tractor or a combiner, with a simpler configuration than such a refrigerant type air conditioning system.
[0005]
[Means for Solving the Problems]
The above-described problems of the present invention have been solved by the following means. According to the first aspect of the present invention, a water tank 34, a blower 35 for spraying water in the water tank 34 in the form of a mist to the lower front part of the roof 31 of the cabin 24 constituting the cockpit, and a mist blown out by the blower 35 the Misutokura 30 the Jo water drop and a one or more mist outlet 32b for blowing toward the driver of the cockpit is disposed, the outside air introduction duct 32 for intake of the outside air blown out from the mist outlet 32b of the Misutokura 30 An outside air inlet 32 a that is disposed below the roof 31 of the cabin 24 and is connected to the duct 32 is provided behind the roof 31 of the cabin 24, and the outside air introduction duct 32 and the outside air inlet 32 a The roof 31 is provided integrally with the roof 31, and the roof 31 is configured to be openable and closable with the top of the cabin 24 as a rotation fulcrum 31 a, and the water tank 34. The blower 35 is the air conditioning apparatus for a moving vehicle where the structure is detachably supported on the frame 16 of the top portion of the cabin 24.
[0006]
According to the first aspect of the present invention, the water in the mist cooler 30 is atomized by the outside air sucked into the mist cooler 30 to form water droplets having a diameter of about 10 μm, and blown into the cockpit (cabin) 24 from the outlet 32b. Since the latent heat of vaporization is taken away from the outside air during the evaporation, the cockpit (cabin) 24 is cooled.
[0008]
Then , the outside air is sucked into the mist cooler 30 by the blower 35, and the mist is atomized by, for example, an ultrasonic vibrator 39 provided in the water tank 34 to form water droplets having a diameter of about 10 μm. 24 is blown out.
[0009]
【The invention's effect】
According to the first aspect of the present invention, it is possible to provide an inexpensive air conditioner in a cockpit of a moving vehicle such as a tractor or a combiner, with a simpler configuration than that of the refrigerant type air conditioner. In addition, it is possible to easily perform maintenance of a mist cooler such as a water tank or a blower by opening an openable / closable roof.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a cabin air conditioner used for an agricultural tractor (hereinafter referred to as a tractor) according to an embodiment of the present invention will be described.
As shown in the side view of the tractor of FIG. 1 (the door of the cockpit, the windshield, the rear glass, etc. are not shown), the tractor 10 includes an engine 12 covered with a bonnet 11, and the driving force of the engine 12 is supplied to the pulley 2 as shown in FIG. 2 and the counter case 4 received via the belt 3, the transmission case 5, the clutch body 6, the PTO speed change case 7, and the like are main frames 13 as main parts of the rigid body of the airframe. A pair of front wheels 14 and rear wheels 15 are provided on the left and right, respectively. Then, the rotational power of the engine 12 is appropriately decelerated by the speed change mechanism in the transmission case 5 and transmitted to the front and rear wheels 14 and 15 for traveling.
[0011]
A driving force is transmitted from the transmission mechanism in the transmission case 5 to the PTO from the universal joint 8 and the transmission mechanism in the PTO transmission case 7. Further, the control pump 9 is driven from a gear in the counter case 4 via a PTO shaft (not shown), and the chemical solution in the chemical solution tank 25 is sprayed from a nozzle (not shown).
[0012]
A floor 18 is provided on the upper surface of the central portion of the mission case 5, and a cockpit (cabin) is formed above the floor 18 by a frame structure in which a handle 20, a driver's seat 21, an operation lever (not shown) and the like are arranged. ) 24. Although not shown, a sun visor may be provided instead of the cover of the cabin 24.
[0013]
Further, when a link mechanism (not shown) for connecting a work machine is provided at the rear of the main frame 13, when a chemical spraying device is provided in front of the bonnet 11, or a lawnmower in front of or below the vehicle body. May be provided.
[0014]
The frame structure of the cabin 24 protrudes from the left and right of the front end portion of the floor 18 to the respective sides as shown in the plan views of FIGS. 1 and 2, the front view of the main part of FIG. 3 and the perspective view of the main part of FIG. A step extension bracket 17 composed of a band plate is attached to the outer surface of the step extension bracket 17, and the lower portions of the pipe-like columns 16 and 16 of the cabin 24 are attached to the outer surface of the step extension bracket 17. A step extension bracket 17 is attached to the front side of the floor 18, and a lower portion of the column 16 of the cabin 24 is attached thereto. A water supply tank 25 for watering or spraying chemicals is installed in the rear part of the cockpit (cabin) 24.
[0015]
The embodiment of the present invention is characterized in that a cabin mist cooler (hereinafter simply referred to as a mist cooler) 30 for a passenger management machine is provided on a roof 31 of a cockpit (cabin) 24. An outside air introduction duct 32 to the mist cooler 30 is provided at the lower rear portion of the roof 31, an outside air inlet 32 a is connected to the rear end portion of the duct 32, and the outside air inlet 32 a is provided at the rear portion of the roof 31. In addition, a pair of left and right outside air outlets 32 b are connected to the other end of the outside air introduction duct 32, and the outside air outlets 32 b are arranged from the front in the cockpit (cabin) 24 toward the driver.
The air sucked from the outside air inlet 32a is blown into the cabin 24 from the outside air outlet 32b via the filter 33 in the duct 32.
[0016]
As shown in FIG. 5, the mist cooler 30 used in the present embodiment includes a water tank 34, a blower 35 for blowing water in the water tank 34 in a mist state, a mist outlet 32b, and a mist up to the outlet 32b. Four passages 36 and a blower passage 37 from the blower 35 are provided. Further, a tank 38 (FIG. 2) for supplying water to the water tank 34 is also installed. The mist flow path 36 is provided with a double-structured duct provided so as to be surrounded by the air flow path 37, up to the mist outlet 32b. The water in the water supply tank 38 is supplied to the water tank 34 of the mist cooler 30 through the float valve (not shown) so as to have a constant water depth.
[0017]
In the mist cooler 30 having the above-described configuration, the outside air that has passed through the filter 33 by the blower 35 is sucked into the cooler body, flows in two directions on the mist flow path 36 side and the blow path 37 side, and is provided in the water tank 34. The mist in the mist flow path 36 is atomized by the ultrasonic transducer 39 and becomes water droplets having a diameter of about 10 μm, passes through the inside of the double-structured duct (mist flow path 36), and passes through the cockpit ( Cabin) 24 is blown out.
[0018]
Further, a transpiration material 41 is disposed in the duct 37 in the vicinity of the blowout port 32b, and water droplets are grown by the transpiration material 41 so that water droplets grown in the duct 37 do not fall into the cockpit (cabin) 24 from the blowout port 32b. Absorb and hold.
[0019]
The evaporating material 41 is made of a hydrophilic porous chamber resin (sintered molding of polyethylene resin (PE)) having a large number of pores, and absorbs and evaporates water by capillary action of a large number of pores. An antibacterial sheet (not shown) in which silver zeolite (silver is ion-bonded to zeolite) is placed on a non-woven fabric is disposed in the water tank 34 to prevent the propagation of germs.
[0020]
Since fine water droplets are blown out from the mist outlet 32b of the mist cooler 30 toward the driver, the latent heat of evaporation is taken away from the outside air when the mist evaporates, so that the cockpit 24 is cooled.
[0021]
Further, as shown in the schematic side view of the cockpit (cabin) 24 in FIG. 6 (when the roof 31 is opened) and FIG. 7 (when the roof 31 is closed), a rotation fulcrum 31a is provided at the rear portion of the roof 31 of the cabin 24. The front of the roof 31 is openable and closable around the pivot fulcrum 31a, and the outside air introduction duct 32 and the outside air intake 32a are integrally provided at the rear lower part of the roof 31, so that the cabin top portion on the lower side of the roof 31 is provided. A one-touch detachable water tank 34, a blower 35, and the like, and a mist outlet 32b are disposed by being supported by the frame 16. At this time, a holding stay 45 at the time of opening the roof 31 having the rotation fulcrum 31 a is provided behind the cabin 24. A rotation fulcrum 45a of the holding stay 45 is provided on the roof 31 side, and an engagement member (not shown) is provided on the cabin 24 side at a fixed position 45b when the holding stay 45 is opened and a fixed position 45c when closed.
[0022]
By providing the holding stay 45, maintenance work of the mist cooler 30 when the roof 31 is opened, for example, the attachment / detachment of the water supply tank 38 can be performed safely and easily. Further, the roof 31 is fastened and fixed to the pipe-like column 16 of the cabin 24 by a roof fixing lock 31b provided in front of the roof 31 so that the tractor is not dropped or damaged when the roof 31 is moved.
[0023]
Further, as shown in FIG. 8, the cabin 24 of the present embodiment can be transported by making the frame configuration of the simplified cabin 24 for a riding management machine into a one-piece assembly type. Although these frames themselves have a divided configuration, they are configured to be united and transported by assembly.
[0024]
As shown in FIG. 8, the roof 31 with the duct 32 attached to the upper ends of the left and right frames 46 and 47, the left and right frames 46 and 47, the front support frame 51 and the rear support frame 52 of the roof 31, and consisting rear support frame 53 and support frame 5 4 prior to attachment respectively to the front and rear left and right frames 46 and 47. Although these members are aluminum and lightweight, they become an integrated cabin after assembly, so they can be supplied from the tractor manufacturing plant to the tractor sales company in the assembled state. In that case, the tractor sales company can greatly reduce the number of assembly steps. In order to increase the strength of the integral cabin frame obtained by assembling the members, the members are joined by welding, and bolts and nuts are used when the strength is not so required.
[0025]
As shown in the plan view of the frame structure of the vehicle body of the tractor in FIG. 9, the step extension bracket 17 is attached to the main frame 13 of the vehicle body to widen the floor width. In addition, the pipe-like column 16 is placed on the step extension bracket 17 and fixed. Thus, when the pipe-like support column 16 (FIG. 4) is mounted on the step extension bracket 17, sufficient holding strength of the cabin 24 is obtained by the main frame 13 and the step extension bracket 17, and the mounting man-hour can be greatly reduced. A front frame 58 for supporting the bonnet 11 is provided in front of the main frame 13.
[0026]
Further, by disposing the step extension bracket 17 on the extension of the tank seal surface at the cabin side lower edge, the frame configuration can be simplified on a straight line in the front-rear direction in plan view, and the sealing performance can be improved.
[Brief description of the drawings]
FIG. 1 is a side view of a tractor.
FIG. 2 is a plan view of the cabin of FIG.
FIG. 3 is a front view of an essential part of the cabin of FIG. 1;
FIG. 4 is a perspective view of the main part of the front part of the floor.
FIG. 5 is a structural diagram of a mist cooler.
6 is a side view of the cabin with the roof of FIG. 1 opened. FIG.
FIG. 7 is a side view of the cabin with the roof closed.
FIG. 8 is a perspective view of a cabin frame and the like before assembly.
FIG. 9 is a plan view of a frame structure of a vehicle body of a tractor.
[Explanation of symbols]
2 Pulley 3 Belt 4 Counter case 5 Transmission case 6 Clutch body 7 PTO speed change case 8 Universal joint 9 Control pump 10 Tractor 11 Bonnet 12 Engine 13 Main frame 14 Front wheel 15 Rear wheel 16 Pipe-shaped support (frame) 17 Step extension bracket 18 Floor 19 Sub floor 20 Handle 21 Driver's seat 24 Cabin (sun visor) 25 Water supply tank 30 Mist cooler 31 Roof 31a Rotating fulcrum 31b Roof fixing lock 32 Outside air introduction duct 32a Outside air inlet 32b Mist outlet 33 Filter 34 Water tank 35 Blower 36 Mist flow path 37 Air duct (duct)
38 Water supply tank 39 Ultrasonic vibrator 41 Evaporating material 45 Holding stay 45a Rotating fulcrum 45b Fixed position when opened 45c Fixed position when closed 46, 47 Left and right frames 51 Front support frame 52 Rear support frame 53 Rear support frame 54 Front support frame 57 Auxiliary frame 58 Front frame

Claims (1)

A water tank 34, a blower 35 for spraying the water in the water tank 34 in a mist form, and mist-like water droplets blown out by the blower 35 to the lower front part of the roof 31 of the cabin 24 constituting the cockpit. the Misutokura 30 that includes a one or more mist outlet 32b for blowing toward the driver disposed under the roof 31 of the outside air introduction duct 32 to the cabin 24 for intake of the outside air blown out from the mist outlet 32b of the Misutokura 30 An outside air intake port 32a that is disposed on the side and connected to the duct 32 is provided behind the roof 31 of the cabin 24;
The outside air introduction duct 32 and the outside air intake port 32a are provided integrally with the roof 31 at the rear lower part of the roof 31, and the roof 31 is configured to be openable and closable with the top of the cabin 24 as a pivot fulcrum 31a. The air conditioner for a moving vehicle is characterized in that the fan 35 and the blower 35 are detachably supported by the frame 16 at the top of the cabin 24 .

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