JP2001105845A - Cold air fan for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water cooling type cold air fan which can supply a sufficiently cold air current excluding a water drop and supply a sufficiently cool air to a driver, even during the running of an automobile with a comparatively high speed, on the cool wind instrument for a working car utilized the evaporation latent heat of a water. SOLUTION: This cold air fan is provided with an intake port, the water absorption evaporation unit for cool wind communicated to the intake port and constituted by piling lots of water absorption sheets mutually while providing a ventilatable clearance, a water receiving vessel for dipping the lower end of the water absorption unit into the water and moistening the water absorption sheet, a suction fan for ventilating the air from the intake port to the water absorption evaporation unit and a discharge port communicated with the suction fan. The cool wind instrument is arranged in front of the upper part of driver's sear of a non-cover automobile and the discharge port is orientated from the frontside to the upper part of the driver's seat. The water absorption sheet, consisting of an inorganic fiber, arranges a separator for alienating on the sheet surface parallelly and the sheet is erected in the vertical direction of the separator and the air is circulated in the direction parallel with the separator.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cold air device for a work vehicle which supplies cold air utilizing latent heat of evaporation of water to a driver's seat side of the work vehicle.

[0002]

2. Description of the Related Art There are conventional air conditioners that adiabatically expand a liquefied gas pressurized by a compressor and use the heat absorbed by the compressor, and a water-cooled cold air system that utilizes latent heat of vaporization of water in an air stream. Machines are known. Conventional air conditioners for automobiles have a method of spraying water into the airflow.For example, an ultrasonic vibrator is arranged on the side of the water tank, air is flowed from the fan above the water surface, and the ultrasonic impact is applied. There has been a method in which fine water droplets atomized by scattering of water are mixed in an air stream, and thereby cooled air is released.

[0003] Also, for indoor use in ordinary households, a belt-like cloth is made endless, and the cloth is circulated while only the lower part is immersed in water, and an air stream is applied to the upper side of the cloth to make it water-free. There is also known a cooler that emits cold air by cooling by evaporation.

[0004]

A cold air device used in a work vehicle is a coverless driver's seat, which is used for summer work or the like, in which a driver is exposed to an air current at a high temperature, and only the upper body, especially the upper body,
It can be used to cool the head or face. The above-mentioned air conditioner was uneconomical due to the large power consumption, and therefore the consumption of automobile fuel, but in the case of a water spray type air cooler,
As the power source, basically only the driving power of the fan for blowing air is required, so that the fuel consumption can be reduced, which is advantageous.

[0005] However, the spraying method has a large disadvantage in that the airflow hits the driver before the water droplets in the airflow completely evaporate, so that the driver gets wet. This is because it is difficult to control the supply amount of spray water with respect to the blowing amount, and if the supply amount of water in the airflow is excessive, as described above, the cold air will be wet with water droplets, and if the water supply amount is small, Sufficient cold air cannot be obtained.

Further, when a vehicle that also serves as a transporter such as a forklift moves at a relatively high speed, the speed of the cool air is reduced by the surrounding air flow due to the movement depending on the blowing direction to the driver. There were times when I could not spray enough. Further, since the water-cooled type consumes water as a cooling medium, it is necessary to give sufficient consideration to water supply.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object to provide a water-cooled cooler capable of supplying a sufficiently cool airflow without containing water droplets. An object of the present invention is to provide a water-cooled cooler that can supply a driver with sufficient cool air even when the vehicle is traveling at a relatively high speed.

[0008]

SUMMARY OF THE INVENTION In general, a cool air blower of the present invention supplies air to a cold air absorption / evaporation unit which is formed by stacking a number of water absorbing sheets with a gap through which the air can flow. Then, the air is cooled by the heat of water vaporization due to the evaporation of the water absorbed by the water-absorbing sheet, and the cooled air is blown to the driver's seat side of the automobile to blow it to the driver on the driver's seat. is there.

Such a cooler has an intake port, a water absorption / evaporation unit for cold air communicating with the intake port, a lower end of the water absorption / evaporation unit being immersed in water, and a water receiving container and air from the intake port. A fan for ventilating the water absorption and evaporation unit,
And an outlet that communicates with the fan.

[0010] The water-absorbing and evaporating unit used here is formed such that a large number of water-absorbing sheets arranged at intervals are spaced from each other and their surfaces are parallel to each other. Below the water absorption / evaporation unit, a water receiving container for immersing the lower end side of the water absorption sheet in water is provided, and the water absorption / evaporation unit is arranged between the intake port and the discharge port, behind or before the fan. Is done.

[0011] The cooler of the present invention is fixed to a work vehicle and has a discharge port oriented above a driver's seat. Preferably, the direction and position of the outlet are determined such that the cool air is blown above the driver's seat, particularly in front of or on the side of the driver's face.

When air is blown from the rear side of the driver to the driver, the driver's helmet is in the way. Further, when the vehicle is running at a very high speed, the headwind generated by the running hinders the supply of cool air, The driver will not be reached. At this point, the cool air blower of the present invention supplies cool air to the driver from the front, so that the cool air can be reliably received.

The working vehicle includes a transporting vehicle without a lid on the driver's seat, for example, a forklift, and a working vehicle, for example, a tractor, a bulldozer, and the like.
Coolers are applied to these vehicles and are mainly used for vehicle work at high temperatures.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of a cooler according to the present invention is illustrated in FIGS. 1 and 2. The cooler 1 has an intake port 2 and a water absorption / evaporation unit 3 for cooling the air from the intake port 2. And a suction fan 5 for passing air from the intake port 2 to the water absorption / evaporation unit 3 and a discharge port 6 for communicating with the suction fan 5 to supply cool air.

The intake port 2 is a port for taking in air to the cooler 1, and unit guides 41 and 42 for the water absorption / evaporation unit 3 are provided immediately after the intake port 2. The intake port is preferably provided with a filter 22 to prevent intrusion of dust and the like. Unit guides 41 and 42
Is provided between the intake port 2 and the suction fan 5 as a guide for fixing the water absorption / evaporation unit 3, and the bottom of the unit guide is a water receiving container 4 capable of storing water.

In the present invention, the water absorption / evaporation unit 3
Is a gap 39 through which a number of water-absorbing sheets 30 can be passed.
Are arranged in the unit container 33 and are exchangeably unitized. The unit container 33 includes the intake port 2
Immediately after the above, they are removably inserted into the unit guides 41 and 42 and fixed in the cooler. The unit container 33 is provided with ventilation windows 36 on both front and rear sides, and a large number of water-absorbing sheets 30 are vertically erected, and both side edges of the sheet are exposed to the window 36. The gap 39 between the water-absorbent sheets is arranged so as to communicate with both the windows 36, 36. Therefore, in the water absorption / evaporation unit 3, the air sucked by the fan 5 from the intake port 2 can flow through the water absorption sheet 30 through the gap 39 between the water absorption sheets.

In the cooler 1, a water receiving container 4 for immersing the lower end of the water absorbing and evaporating unit 3 in water to wet the water absorbing sheet 30 is provided. The lower end of the unit 3 is fixed, and the water in the water receiving container 4 can wet the lower ends of the multiple water absorbing sheets 30 of the water absorbing and evaporating unit 3.

A suction fan 5 is provided on the rear side of the water-absorption / evaporation unit 3.
A driven sirocco fan is used, and the suction fan inlet 5
3 is connected to the water absorption / evaporation unit 3 with the lower side,
The fan outlet 5 through the spiral duct 55 of the suction fan 5
6 is connected to the discharge port 6.

The water absorption / evaporation unit 3 which can be used in the present invention will be described in detail. The water absorption / evaporation unit 3 is formed by stacking a large number of water absorption sheets 30 facing each other at intervals.
The laminated water-absorbent sheet 30 is framed around the unit container and integrated, and is disposed in the water-receiving container 4.

The water-absorbing sheet 30 is made of organic or inorganic fibers having high water absorption.
The water-absorbing material described in Japanese Patent No. 4276 can be used. The sheet 30 has a water-absorbing layer mainly composed of fibers having a fiber diameter of 5 μm or less formed with a shape-retaining layer composed of fine powder and an adhesive material or a binder, and has a water-absorbing property and a sheet-retaining property, particularly,
The sheet has improved bending strength when wet. Further, as an example of the water-absorbing sheet, a non-woven fabric is formed from hydrophilic inorganic fibers, and a sheet made by mixing inorganic fibers with a fine powder of a mineral substance can be used. For example, a highly water-absorbing sheet in which a non-woven fabric using a hydrophilic ceramic fiber is used as the fiber, and the non-woven fabric and the fine powder are mixed with hydrophilic silica sol and alumina sol powder can be used. The sheet is
Although an appropriate thickness can be used in consideration of the strength together with the amount of water sucked up, for example, a thickness of 0.5 to 3 mm can be preferably used.

The outer shape of the water-absorbing sheet 30 is preferably rectangular, and a large number of sheets 30 are stacked so as to form a gap 39 between the sheets 30. When the sheet 30 itself is formed into a corrugated or zigzag shape and stacked, the sheet 3
A gap 39 may be formed between zeros.

Preferably, as shown in the figure, a water-absorbing sheet in which separation separators 32 are arranged in parallel on the surface of the sheet 30 can be used. As an example of the separator 32, FIG.
As shown in FIG. 3, a thermoplastic resin, for example, a hot-melt type adhesive material is extruded into a thin string shape in a molten state to form a sheet 3.
After coating on the surface 0, by cooling and curing,
It is formed on a ridge 321 or a rib having an appropriate height, for example, 1 to 10 mm. In such a water-absorbing sheet, a large number of sheets 30 are erected so that the separator is in a horizontal direction. When the sheets 30 are stacked, two to several steps of gaps 39 are formed between adjacent sheets 30 at predetermined intervals corresponding to the height of the ridges 321 or ribs.
Are used as air passages. The use of such a synthetic resin separator has an advantage that the sheet can be strengthened as compared with the case where the sheet itself is deformed to form a gap.

The laminated body 31 of the sheet 30 is framed around by a unit container 33.
May be any as long as the sheet 30 of the sheet laminate 31 is fixed so as not to be displaced. For example, when a large number of rectangular sheets 30 are erected and the laminate 31 having a rectangular parallelepiped shape is formed, A container or frame that can support at least the lower part and the four corners of the laminate 31 and can open the sheet ends on both sides of the sheet laminate 31 can be used.

As an example of the unit container 33, FIG.
The unit container 33 has an integral rectangular parallelepiped shape capable of accommodating the laminated body 31 of the water-absorbing sheets 30, has an opening for charging replacement at an upper portion, and has a large opening or window at the front and back of the unit container 33. 3 shows a unit container 33 having 36. At the window 36 of the unit container 33, the end of each sheet 30 of the accommodated sheet stack 31 is exposed, and therefore, the gap 39 between the sheets 30 is opened at the window 36, so that the unit container 33 is opened. 33 through the window 36 on both sides,
An air flow can flow through the gap 39 between the sheets 30. Further, an appropriate opening (not shown) is also provided on the bottom surface, so that the water can easily flow into the unit container from the water receiving container 4 and the lower end of the seat 30 can be kept wet. .

Such a unit container 33 is made of a corrosion-resistant material, for example, aluminum or its alloy or synthetic resin,
It can be formed from vinyl chloride resin, polycarbonate, polyester, acrylic resin, and the like. Further, an upper cover 37 as shown in FIG. 3 is preferably detachably provided at an upper opening of the unit container 33, and a handle 38 is preferably attached to the upper cover to detach and attach the water absorption / evaporation unit 3 to the unit guide. Other handling is easy.

Further, as shown in FIG. 3, in the above-mentioned water absorption / evaporation unit 3, a net 34 is stretched in windows on the front and back surfaces of the unit container 33 to protect the laminated sheets in the container. good. The net may be any one that can be stretched over the container window to prevent exposure of the sheet end,
As an example, a plastic net having a mesh of 2 to 8 mm square and a wire diameter of about 1 to 5 mm can be used. Furthermore, it is preferable that the net 34 of the window and the end of the water-absorbing sheet 30 laminated in the container are partially bonded and integrated with an adhesive resin 35. A hot-melt type adhesive material can be used for the adhesive resin. The water-absorbing sheet 30 constituting the water-absorbing and evaporating unit 3 generally becomes soft when it absorbs and wets water. However, when an impact is applied due to sudden start or rocking of an automobile, the aggregate of the sheets 30 collapses inside the unit container 33. Although there is concern, a water absorption / evaporation unit of a sheet assembly in which a net is stretched, in particular, a sheet is integrally bonded to a net, can improve the impact resistance to the sheet.

In the water absorption / evaporation unit 3, since each sheet evaporates water while constantly absorbing water from the water receiving container 4, the water is supplied to the water receiving container 4 as needed. The cooler 1 includes a water supply unit.

FIGS. 1 and 2 show a cooling fan 1 as a water supply means.
An example of a water supply tank 7 provided so as to be replaceable in itself is shown. The tank 7 in this example is a separate replaceable tank 7 having a stopper 72 at a base portion 71 at a lower end portion. 1
The tank receiving portion 4 for guiding and fixing the water supply tank 7, opening the stopper, and supplying water to the water receiving container 4.
4, and a water channel 43 for guiding the water dropped to the tank receiving portion 44 to the water receiving container 4. If water is previously charged in the water supply tank 7, the water in the tank falls as the water level of the tank receiving portion 44 falls, so that the water receiving container 44 can be naturally refilled. The capacity of the water supply tank 7 is usually 1
It is convenient to adjust the capacity so that it can be used for 3 to 6 hours with each replenishment.

FIG. 4 shows an example in which the above-described cooler 1 is mounted on a forklift 9. In this forklift, protective frames 91a, 91b and 92 are fixed to the upper part of the vehicle body. Left and right are open. In this example, the cooler 1 is located on the upper protection frame 92 of such a forklift and the driver's seat 93
It is fixed at a position more diagonally forward. In this position, the cooler 1 has the intake port 2 directed forward of the vehicle body, and the discharge port 6 directed rearward and downward. The discharge port 6 is set so that the cool air from the cooler 1 hits the position above the back 94 of the driver's seat 93, that is, the front or side surface of the driver's face. Preferably, the discharge port 6 may be provided with an orientation means for changing the blowing direction of the cool air, for example, a flexible pipe, a rotatable nozzle, or the like.

The position where the above-described cooler 1 is mounted is a position obliquely forward of the driver's seat, and preferably at the same time, just above the elevating step 95 of the forklift 9, and the water supply tank 7 for replenishing water is replaced. At this time, the operator can easily mount and remove the tank 7 from and to the cooler by riding the steps.

[0031]

According to the cooler of the present invention, a plurality of water-absorbing sheets are provided in communication with the air inlet so that a gap can be provided between the sheets to wet the water-absorbing evaporating unit for cold air and the water-absorbing sheets. And a fan that ventilates the water absorption and evaporation unit and discharges cool air through the discharge port,
Since the cooler is arranged in front of the upper part of the driver's seat of the open car and the discharge port is oriented from the front to the upper part of the driver's seat, the driver of the vehicle can always receive cold air on the face. . In particular, since the discharge port 6 is arranged from the front to the upper part of the driver's seat, the driver can perform the operation while the vehicle is running and when the driver wears the helmet.
Cold air can be effectively enjoyed during work.

The above water-absorbing sheet is made of inorganic fibers,
Place the separator for separation on the sheet surface in a parallel line shape,
Since the sheet is erected in the vertical direction of the separator, air can flow in the direction parallel to the separator,
Since the flow resistance of air is small and the evaporation rate of water from the sheet is high, the cooling rate of air can be increased.

In the cooler, the above-described water absorption / evaporation unit is disposed in the unit container 33 so that the unit container 33 can be replaced together. Therefore, the water absorption / evaporation unit can be replaced according to the condition of sheet damage or contamination in the water absorption / evaporation unit. It is easy to replace the unit 3.

In the cooler of the present invention, since the above-described water absorption / evaporation unit is provided with a net on the front surface of the unit container 33, the sheet laminate 31 can be reinforced, and can be subjected to impact during traveling or sudden start / stop. On the other hand, the collapse of the sheet of the water absorption / evaporation unit can be effectively prevented.

The cooler of the present invention is provided with a separate water supply tank having a stopper at the lower end. The cooler guides and fixes the water supply tank, opens the stopper and moves the water receiver. If the tank has a tank receiving portion to supply water, the water supply tank can be detachably attached, the tank can be easily replaced, and the water supply operation by the water supply tank can be performed extremely easily. .

The present invention can be applied to a work vehicle without a lid on the driver's seat of a forklift, a tractor, or the like, and can improve the working environment and work efficiency in outdoor work at high temperatures.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a cooler according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the cooler according to the embodiment of the present invention.

FIG. 3 is a partially cutaway perspective view of a water absorption / evaporation unit used in the cooler of the embodiment of the present invention.

FIG. 4 is an external view showing an example in which the cool air blower of the present invention is mounted on a forklift.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cooler 2 Inlet 3 Water absorption evaporator unit 30 Water absorption sheet 4 Water receiving container 5 Suction fan 6 Discharge port 7 Water supply tank 9 Forklift

 ──────────────────────────────────────────────────続 き Continued on the front page (71) Applicant 599140633 Yoshimasa Tanaka 195 Ujinojin, Uji-city, Kyoto, Japan 195 Environmental Science Co., Ltd. (72) Inventor Yoshimasa Tanaka 195 Ujinojin, Uji-shi, Kyoto 195 Environmental science shares F term in the company (reference) 3L050 BB05

Claims (7)

[Claims] 1. A water absorption / evaporation unit for cold air comprising a plurality of water absorption sheets which are communicated with an air inlet and provided with a gap through which air can be passed therebetween, and a lower end of the water absorption / evaporation unit which is immersed in water to absorb water. A water receiving container for wetting the air, a fan for ventilating the air from the intake port to the water absorption / evaporation unit, and a discharge port communicating with the fan. A cold air blower for a vehicle, wherein the air outlet is arranged above a driver's seat and the discharge port is oriented from the front or the side toward the upper part of the driver's seat. 2. The water-absorbing sheet is made of inorganic fibers,
A plurality of separation separators are arranged in a parallel line on any surface of the sheet, and the above-described water absorption / evaporation unit is stacked with a number of water absorption sheets standing upright so as to face each other in the vertical direction of the separator, The cooler according to claim 1, wherein the air is passed through gaps formed between separators of each sheet. 3. The water absorption / evaporation unit is housed in a unit container having a window portion through which air can flow while exposing each sheet end, and a lower part of the unit container can be immersed in water in a water receiving container. And the unit container is replaceable.
Or the cooler according to 2. 4. The water absorption / evaporation unit is characterized in that a net is stretched over a window of a unit container, and the net and an end of a laminated water absorbing sheet are partially bonded with an adhesive resin to be integrated. The cooler according to claim 3, characterized in that: 5. A tank for providing a water supply tank having a separate water supply tank having a stopper at a lower end portion, wherein the cooler guides and fixes the water supply tank to open the stopper to supply water to the water receiving container. The air conditioner according to claim 1, further comprising a receiving portion. 6. The cool air blower according to claim 1, wherein the vehicle is a work vehicle without a driver's seat, such as a forklift or a tractor. 7. The vehicle is a forklift,
The cool air blower according to any one of claims 1 to 6, wherein the cool air blower is arranged at an upper front part of a driver's seat and blows cool air toward an upper part of the driver's seat.