JPH0834320A - Hot air dryer for vehicle - Google Patents

Abstract

PURPOSE:To provide a hot air dryer for a vehicle which is of a heaterless structure and high in safety, and also which is simple in its structure and in which cost reduction both in the cost of the device and in the running cost thereof has been attained. CONSTITUTION:A hot air dryer 10 for a vehicle is provided with an air compressor having such a characteristic that both the discharge air pressure and the discharge air temperature are increased by spirally compressing intake air and also by throttling the quantity of the discharged air, together with a motor in its case body 1; and also it is additionally provided with a nozzle 17 that has been fitted to the end of an air discharge hose 15 connected to the outlet proper discharge air pressure and air temperature.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is installed at a gas station, a car wash, etc.
The present invention relates to a warm-air dryer that quickly performs draining and drying of a portion such as a narrow gap of a vehicle that cannot be wiped off with a towel, and particularly relates to a warm-air dryer that can economically obtain warm air without a heater.

[0002]

2. Description of the Related Art As shown in FIG. 8, a vehicle that has become dirty due to rain, sand dust, or the like is washed by an automatic car washing machine 100 installed at a gas station, a car wash lot, or the like, and air sent from a fan 120. Is sprayed onto the vehicle 110 with the nozzle 130 to blow off water droplets and water drops on the body and complete the car wash. After this, water droplets that still remain in the small gaps of the vehicle 110 are wiped off with a towel. Wiping off water droplets with the above-mentioned towel is carried out on the front part of the vehicle, the fog lamp part 110A and the inside 110B of doors, bumpers, etc.
The water remains in a narrow area where you can't put your hand in it, and it ends without being wiped off.

Further, at the time of servicing a vehicle for vehicle inspection or the like, the underside of the vehicle body is washed with a hot water shower while being placed on a lift.
After this cleaning, a stand-by step for allowing natural drying for about 2 hours is taken as a dead time to start spray coating under the vehicle body. In order to eliminate the dead time for performing the natural drying, it has been proposed to forcibly dry the wet lower surface of the vehicle body with a heater-type warm air blower to efficiently transfer to the next coating step.

[0004]

In the above-mentioned conventional automatic car washing machine, not only is the entire vehicle body semi-dried (dry) but also a narrow place where the towel cannot be wiped by the water draining by spraying air and the drying by wiping with a towel. I had to give up on draining. Therefore, a means of forced drying by blowing warm air to this narrow place can be considered. If the blower of an automatic car washing machine is equipped with an electric heater as a means for implementing it, not only the apparatus becomes expensive, but also the running cost is high and it is not economical. Also in the vehicle inspection and maintenance work, the running cost is increased by the method using the warm air blower for draining water. On the other hand, in a burner type hot air dryer that burns fuel, besides burning or degrading the coated surface, there is a high risk of ignition of gasoline and the like, which is not very practical.

The present invention has been made in view of the above problems that occur when the water is drained and dried after the vehicle is washed, and it is intended to reduce the low cost and running cost of the apparatus because of the high safety and simple structure without the heater. The object is to provide a warm air dryer.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention has a characteristic that discharge air pressure and discharge air temperature rise by compressing intake air in a spiral shape and reducing the discharge air amount. Equipped with an air compressor with a motor inside the box, an air outlet hose is connected to the outlet of the air compressor, and the appropriate outlet air pressure and outlet air temperature at the tip side of the air outlet hose. It is characterized in that a nozzle port for restricting the discharge air amount is additionally provided in order to secure the amount.

[0007]

According to the hot-air dryer of the present invention, the motor of the air compressor is started after the discharge nozzle is replaced with a discharge nozzle whose cross-sectional area is reduced to a predetermined value. When the engine is idled for about 1 minute after startup, the intake air is spirally compressed and the discharge temperature is raised to about 60 ° C., and the discharge air pressure is simultaneously increased to a predetermined pressure by reducing the discharge air amount. Therefore, high-pressure hot air blows out from the discharge nozzle of the warm air dryer, and the water droplets remaining in the narrow part of the vehicle after car wash that cannot be wiped off are blown away with the hot air. Can be completely dried quickly.

In particular, the pressure rise and the temperature rise occur at the same time by mounting the nozzle port that restricts the discharge air amount so that the discharge air temperature of the air compressor reaches a predetermined value without the heater. Therefore, there is an effect that hot air of a predetermined temperature that is safe and economical is preset with a simple device.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of the present invention will be specifically described with reference to FIGS. In FIG. 1, the main body of the warm air dryer 10 presents a box body 1, and an operation panel 5 which can be opened and closed, a power switch 5A, a motor start switch 5B, a motor stop switch 5C, etc. are provided on the upper front part of the box body 1. I have it. In addition, a panel 3 that can be opened and closed is provided on the lower front surface,
A motor and an air compressor (described later) are built in this. Further, on the upper surface of the box body 1, a swivel base 9 that swivels 360 degrees, and an arm 11 that stands upright by a spring 13 in a vertical posture.
And an air blowing hose 15 at the top of the arm 11.
Is connected. A tip end side of the air blowing hose 15 hangs down, and a nozzle port 17 having a narrowed cross-sectional area is replaceably connected to the tip end portion thereof. When not in use, it is attached to a side wall of the box body 1 as shown in the drawing. It is inserted in the holder 19. At the time of use, the tip of the air blowing hose 15 is pulled out from the holder 19 and the nozzle port 17 is pulled out from the vehicle 11.
It approaches the narrow part of 0 and blows off the water droplets that remain here.
By the action of the arm 11 and the swivel base 9, the air blowing hose 15 covers a wide radius of a swivel radius of about 7.5 m and a swivel angle of 360 degrees.

Next, the internal structure of the warm air dryer 10 and the air compressor will be described with reference to FIGS. An air compressor EB is installed in a bracket 23 in a lower space 1A of the box 1 via a base 21 thereof. The air compressor EB is provided with a suction port 29 and a discharge port 27, and the discharge port 27 is connected to the inlet end 15A of the air blowing hose 15. Further, the air compressor EB is provided with a driving motor M on an upper portion of the casing 25, and an impeller 33 is directly connected to a rotation shaft 31 of the motor M. Further, the air compressor EB
Applies the same principle to gas as a Wesco type pump (or regenerative pump) belonging to a friction pump, and has a characteristic of outputting high wind pressure in spite of its small size. (It should be noted that the air compressor EB is the same as, for example, a known trademark of Fuji Electric Co., Ltd. under the registered trademark "Ring Blow").

The principle of the air compressor EB will be described with reference to FIG. When the impeller 33 of the air compressor EB rotates,
The air in the grooves 33A and 33B of the impeller 33 flows away in two spirals from the root of the impeller to the tip side along the arrow in the figure due to centrifugal force, and the centrifugal force at this time causes a pressure to increase. To rise. The air released between the casing 25 and
The air coming out from the tip of the blade returns to the root of the blade again along the casing wall. Such an air flow (vortex) is repeated many times from the time the air enters the casing 25 until it exits, so that the pressure thereof gradually increases, and at the outlet 27, it corresponds to many stages of the turbo blower. High wind pressure is obtained (one stage per air passage through the groove of the blade). The movement of air in the casing has a spiral shape as shown by the broken line in the figure.

Next, characteristics of the air discharge pressure (static pressure), discharge temperature, motor output, etc. with respect to the discharge air amount (m ³ / min) of the air compressor EB will be described with reference to the characteristic curve diagram of FIG. The motor capacity is 3kW, and the discharge air volume is 6 (m ³ / m) from “O” that closes the discharge port 27 to the full opening.
in). Therefore, when the discharge port 27 is closed,
The static pressure becomes maximum (2800 mmAq), and as the discharge amount increases, the static pressure becomes 2000, 100 as indicated by the one-dot chain line.
It decreases to 0 and 0. As for the discharge temperature (° C), the discharge temperature (° C) increases as the air discharge amount is reduced, as indicated by the solid line. In the figure, the discharge port 27 becomes 100 ° C. or higher near the time of closing when the maximum allowable current of the motor M is reached,
80 ℃ at 1m ³ / min, 60 ℃ at 2m ³ / min, 3m
The temperature is around 40 ° C. at ³ / min.

Therefore, the warm air dryer 10 of the present invention has 6
In order to use the discharge temperature of 0 ° C to 80 ° C, the discharge air amount should be 1 to 2 under the condition that the motor M has a maximum allowable current value or less.
It suffices to use it in a state of being squeezed to m ³ / min, and the discharge pressure at this time is in the range of 2500 to 2800 mmAq. The discharge temperature is 80% higher than that shown in the figure.
In order to obtain a larger discharge air amount at a temperature of ℃ or more, change to a large-capacity motor M and air compressor EB, and the nozzle port 1 with a reduced discharge air amount so that an appropriate temperature and discharge pressure can be obtained.
7,17 'will be selected and used.

As described above, under the conditions shown in FIG. 5, the nozzle port 17 or 17 'shown in FIG. 7 for restricting the discharge air amount to 1 to 2 m ³ / min may be used. 17A "and" round hole mouth 17A '". As shown in the figure, the inlet holes 17B and 17B 'are compared with the outlet holes (17A and 17A).
The step area of ′) is set to a predetermined value “so that the discharge temperature is 60 ° C. to 80 ° C.”.

The warm air dryer 10 for a vehicle of the present invention is constructed as described above, and in the vehicle 110 shown in FIG. 6, after the car was washed by the automatic car wash machine 100 shown in FIG. Inside the bumper or inside the skirt 11
The operation of blowing off water droplets remaining in a narrow space such as 0B or the inside of a door and drying with warm air will be described.

First, the nozzle port 17 or 17 'of FIG. 7 is connected to the tip of the air blowing hose 15. Here, the power switch 5A of the warm air dryer 10 is turned on, the motor M is started by the start switch 5B of the motor M, and the air compressor E
Drive B. When running idle for about 1 minute after start-up, the intake air is compressed in a spiral shape and the discharge temperature is 60 ° C to 80 ° C.
Be raised to a degree. The discharged air is 60 ° C to 80 ° C.
A rise in temperature and a discharge air pressure of 2500-2800 mmA by the amount of discharge air throttled to 1-2 m ³ / min
Simultaneously raised to q. Therefore, hot air of high pressure is blown from the nozzle opening 17A or 17A 'of the hot air dryer 10 for discharging, and the nozzle opening for discharging water droplets remaining in a narrow portion of the vehicle after car wash that cannot be wiped with a towel. And is blown away at the same time, and at the same time, because of the appropriate temperature of hot air, the painted surface of the vehicle 110 and the plastic member are quickly and completely dried without being deteriorated by heat.

According to the present invention, the following effects can be obtained. First, without a heater, the air compressor E
By reducing the discharge air amount of B, the pressure and the temperature can be increased at the same time, and there is an effect that the warm air and the blowing pressure that are safe and economical can be obtained with a simple device. Further, the discharge temperature can be easily adjusted by exchanging the discharge air amount with a nozzle port which is set in advance to a predetermined value.

The present invention is conceivable in many applications other than the above-mentioned drying for washing the vehicle 110. For example,
It can also be used for draining and drying after steam cleaning of the lower surface of the vehicle body at the time of vehicle inspection maintenance, and after the drying by the warm air dryer 10, the coating process for the lower surface of the vehicle body can be started immediately. Furthermore, it goes without saying that the detailed structure of the warm air dryer 10 of the present invention can be changed in design. For example, the shape of the box body 1 and the configurations of the arm 11 and the nozzle port 17 are not limited to the above-described embodiment, and design changes can be freely made according to various embodiments. or,
The warm air dryer 10 in which the air compressor EB is installed in the exposed state without the box 1 may be used.

[0019]

As described in detail above, according to the warm air dryer of the present invention, the discharge air pressure and the discharge air temperature rise simultaneously by compressing the intake air in a spiral shape and reducing the discharge air amount. Equipped with an air compressor with characteristics, the end of the air blowing hose connected to the discharge port of the air compressor was equipped with a nozzle port that throttles the discharge air amount to ensure an appropriate discharge air pressure and discharge air temperature. Therefore, the intake air is compressed in a spiral shape to increase the discharge temperature of the discharge air to a predetermined temperature of about 60 ° C. to 80 ° C. and the discharge air pressure in a short period of idle operation after the motor of the air compressor is started. Also, two effects that can be increased to high pressure can be obtained at the same time. Therefore, high-pressure hot air blows out from the discharge nozzle of the warm air dryer.For example, after car washing, in a narrow part of the vehicle where water drops cannot be wiped off with a towel and the water drops are blown away by bringing the nozzle close. It has the effect of being quickly dried completely by the wind.

Particularly, without a heater, pressure rise and temperature rise occur at the same time by reducing the amount of air discharged from the air compressor, which simplifies the structure and reduces the cost of the device and the running cost. Since a heat source such as a heater is not used at all, there is no fire caused by misuse, and the effect of enhancing safety can be obtained.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention and is a perspective view of a warm air dryer for a vehicle.

FIG. 2 is a view showing an embodiment of the present invention and is a front view of a warm air dryer for a vehicle.

FIG. 3 is a view showing an embodiment of the present invention and is a partially cutaway sectional view of an air compressor.

FIG. 4 is a view showing an embodiment of the present invention and is a cross-sectional perspective view for explaining the principle of the air compressor.

FIG. 5 is a diagram showing an embodiment of the present invention and is a characteristic curve diagram of an air compressor.

FIG. 6 is a view showing an embodiment of the present invention, and is a perspective view showing an example of use of a warm air dryer.

FIG. 7 is a view showing an embodiment of the present invention and is a perspective view of a nozzle port.

FIG. 8 is a front view showing a conventional automatic car wash machine.

[Explanation of symbols]

 1 Box 3 Panel 5 Operation Panel 5A Power Switch 5A Motor Start Switch 5A Motor Stop Switch 10 Hot Air Dryer 11 Arm 15 Air Blow Hose 17, 17 'Nozzle Mouth 25 Casing 33 Impeller EB Air Compressor M Motor 100 Automatic Car Wash Machines 110 Vehicles 110A, 110B Malls, narrow parts such as skirts

Claims (1)

[Claims] 1. An air compressor having a characteristic that discharge air pressure and discharge air temperature rise by compressing intake air in a spiral shape and reducing the amount of discharge air is provided in a box body together with a motor. An air outlet hose is connected to the outlet of the air compressor, and a nozzle opening for reducing the amount of discharged air is provided on the tip side of the air outlet hose in order to secure an appropriate discharge air pressure and discharge air temperature. A hot air dryer for vehicles characterized by.