JPH09257318A - Hot-air supplier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obviate the need of a heat source such as art electric heater, make an apparatus small in size and lightweight and improve the reliability, by a method wherein eddy currents are produced while compressed air passes through a screw groove of a supplier to supply hot-air in the peripheral part and cold air in the axial part. SOLUTION: Compressed air is supplied to a feed port 6a from a compressor and eddy currents is produced while the compressed air passes through a screw groove 5a on an end face from a recesssed part 5c of a generator 5. A large differential pressure is produced between the central part and the peripheral part of the eddy currents so that the compressed air tends to move toward the central part and a temperature difference its created due to expansion, that generates cold air Ca in the central part and hot air Ha in the peripheral part. The cold air Ca in the central part is led to an exhaust opening 8a, and the hot air Ha in the peripheral part is discharged into a cover 3 after passing through a tubular element 6 made of a pipe, an opening 10a of an adjusting tube 10 and a muffler 11 and then spouted from a hot-air outlet 3a at the tip of the cover 3. An extension hose is connected to a screw part 3b at the tip of the cover 3 to use the hot-air Ha for a wide range of purposes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot air generator capable of generating hot air without using a heat source such as a heater.

[0002]

2. Description of the Related Art Conventionally, as a device for generating hot air,
For example, there is a dryer that heats air with a heat source such as a heater to generate hot air. These have a structure in which air blown from a blower is heated by a heat source such as a heater and supplied as hot air.

[0003]

However, in the above-described hot / warm air generator, since a heat source such as a heater for generating hot / hot air is required, a voltage from a power source is supplied to the heater or the like. Therefore, there is a problem that a power source and cords for connecting the power source and a heater and the like are required, the number of parts is large, and the structure is complicated. In addition, the above hot / warm air generator cannot be used in a place without a power source, which is inconvenient.

[0004] In order to solve these problems,
In recent years, a pressurized gas dehumidifier utilizing a phenomenon in which a gas is separated into a cold gas and a hot gas when a pressurized gas is introduced as a high-speed flow into a pipe from a supply port and a vortex is generated in the pipe is provided. It is becoming popular (Japanese Patent Publication No. 58-9329). This is because the vortex action causes the high-speed flow outside the vortex to become hot gas and the low-speed flow inside to become cold gas, so this cold gas is used as the cooling medium for the first heat exchanger, and the other hot gas is 2 It is designed to be used as a heating medium for a heat exchanger.

However, the pressurized gas dehumidifiers that have been provided in recent years have a complicated internal structure, a large number of parts, and are generally expensive.
The present invention has been made in view of the above-mentioned conventional circumstances, and by utilizing the phenomenon that hot gas is generated outside the vortex due to the vortex action by supplying pressurized gas, without using a heat source. It is an object of the present invention to provide a hot / hot air generator that can generate hot / hot air, has a small number of parts, has a simple structure, and is inexpensive.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and a hot / warm air generator according to claim 1 has a tubular container body and a container body inside the container body. Is decorated,
A generator in which a screw groove is formed on one end surface, a tapered through hole that expands in diameter toward the exhaust side is formed on the shaft core, and a concave portion is further formed on the outer peripheral surface of the front part, and the base end side of the device body. A silencer having a supply port for supplying compressed air to the recessed portion of the generator, an exhaust port attached to the base end side of the device main body, and a taper through hole of the generator that is internally provided in the device main body. And a cylindrical body communicated to the front of the generator, compressed air is supplied from the supply port of the cylindrical body to the inside of the main body, and the compressed air is supplied to the screw groove from the recessed portion of the generator. Outer hot air generated when passing through the groove is discharged from the hot air outlet provided at the tip of the main body through the pipe, and cool air on the shaft side is passed through the taper through hole of the generator to the outside of the silencer outlet. To It is characterized by being configured so as to output.

The hot / warm air generator according to a second aspect of the present invention is characterized in that an adjusting screw for adjusting the discharge amount of hot / hot air is provided at the tip of the pipe.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a hot air generator according to the present invention will be described below with reference to the drawings. FIG. 1 is an external view of a hot / hot air generator showing an example of an embodiment of the present invention, FIG. 2 is a vertical sectional view showing the internal structure of the hot / hot air generator, and FIG. 3 shows a screw groove on one end face. Fig. 4 is a perspective view of the formed generator, Fig. 4 is a cross-sectional view taken along the line A-A of Fig. 2, Fig. 5 is a vertical cross-sectional view of a generator portion in the hot-hot air generator, and Fig. 6 is a compressed hot gas generator. 2 illustrates a connection state between a supply device for performing the operation and a hot air generator.

As shown in FIG. 2, the hot / warm air generator 1 of the present embodiment includes a main body 4 including an inwardly stepped tubular main body 2 and a cover 3 which are screw-joined to each other, and Is installed inside the main body 2 of the container main body 4 and has a screw groove 5a on one end surface.
In addition, the shaft 5 has a tapered through hole 5b that expands toward the exhaust side, and a concave portion 5c is further formed on the outer peripheral surface of the front portion of the generator 5, and the base of the main body 2 of the main body 4. It has a supply port 6a that is screwed to the end side and that supplies compressed air to the recessed portion 5c of the generator 5, and the screw portion 6 is provided on the upper peripheral surface.
b, a supply cylinder 6 formed therein, a silencer 8 having a plurality of exhaust ports 8a attached to the base end side of the main body 4 of the container body 4 through a cold cap 7, and a cover portion of the container body 4. 3 includes a tubular body 9 made of a pipe which is internally mounted on the tip of the main body 2 by screwing and communicates with the front of the tapered through hole 5b of the generator 5.

One end surface of the generator 5 in which the screw groove 5a is formed is in contact with the inner end surface of the inward step 2a of the main body portion 2 of the container body 4, and between the one end surface and the inner end surface. Is located in the screw groove 5a through which compressed air passes, and when compressed air passes through the screw groove 5a, a vortex flow is generated, hot air is generated outside the vortex flow and cold air is generated on the axial core side. The wind passes through the tubular body 9 and is discharged from the hot warm air outlet 3a provided at the tip of the cover portion 3 of the container body 4, and the cool air passes through the tapered through holes 5b of the generator 5 and the plurality of exhaust ports of the silencer 8. 8a is discharged to the outside.

The outer peripheral surface of the hot-warm air outlet 3a at the tip of the cover body 3 is formed in a tapered shape, and a screw portion 3b is formed on the outer peripheral surface thereof. Further, an outer surface stepped adjustment cylinder 10 provided with an opening 10a for letting out hot and hot air to the outside is attached to the tip of the tubular body 9 made of a pipe, and the outer surface step 10b is attached to the outer surface step 10b. The muffler 11 is arranged. Further, a muffler retainer 12 is arranged at the tip of the muffler 11. In addition, an adjusting screw 13 is screwed onto the inner surface of the tip end of the adjusting cylinder 10, and the opening and closing of the opening 10a is adjusted by screwing the adjusting screw 13 back and forth. It is possible to adjust the amount of hot hot air Ha emitted from 10a toward the muffler 11.

The hot and hot air Ha discharged from the opening 10a passes through the muffler 11 and is discharged into the cover portion 3 to cover the cover body 3
It is designed to be discharged from the hot warm air outlet 3a at the tip. A plurality of exhaust ports 8a of the silencer 8 are provided on the base end wall and the peripheral wall of the silencer 8 so that the cool air Ca is silenced and exhausted.

As shown in FIG. 1, the hot / warm air generator 1 of this embodiment is attached to a mounting plate 15 by a binder 14 arranged so as to sandwich the outer peripheral surface of the cover portion 3 of the main body 4. The mounting plate 15 can be mounted on various devices that require hot air. Further, as shown in FIG. 6, in the hot / warm air generator 1 of the present embodiment, the supply port 6a of the supply cylinder 6 is provided in the compressor 21, and the prefilter 2 is provided.
2, the air dryer 23 and the mist filter 24 are connected, and the compressed air sent from the compressor 21 is supplied to the supply port 6a.
In FIG. 2, reference numerals 16 and 17 are O-rings for maintaining airtightness.

Next, the operation of the hot / warm air generator 1 of this embodiment will be described. From compressor 21 to pre-filter 22, air dryer 23 and mist filter 2
The compressed air supplied to the supply port 6a through the No. 4 becomes a vortex flow from the recessed portion 5c of the generator 5 through the screw groove 5a on the one end surface, and a large pressure difference is generated between the central portion and the outer peripheral portion of the vortex flow. Causes air movement to the center,
Due to the temperature difference due to expansion, cool air Ca is generated in the center and hot hot air Ha is generated outside (see FIGS. 3 to 5), and the cool air Ca in the center is discharged to the exhaust port 8a of the silencer 8 to the outside. The hot air Ha passes through the tubular body 6 made of a pipe and passes through the adjusting tubular body 10.
It is discharged into the cover body 3 through the muffler 11 from the opening 10a, and is discharged from the hot warm air outlet 3a at the tip of the cover body 3. An extension hose (not shown) is connected to the threaded portion 3b at the tip of the cover body 3, and hot hot air discharged from the outlet of the extension hose is used for a wide range of purposes such as drying, heating, heat retaining, and thawing. It

According to the test results, the outer dimensions of the container body 3 are 30 mmφ × 213 mm (length), and the inner diameter of the hot air outlet is 8 m.
When mφ, the supply compressed air pressure is 7 kg / cm ² , and the supply compressed air temperature is 21 ° C., the discharge hot air temperature at a hot air flow rate of 25% is 86 ° C. (supplied compressed air amount 348 l / min),
At a hot / hot air ratio of 50%, the discharged hot / hot air temperature was 69 ° C (supplied compressed air amount 368 l / min), and at a hot / hot air ratio of 75%, the discharged hot / hot air temperature was 58 ° C (supplied compressed air amount 390l).
/ Min).

According to the hot / warm air generator 1 of the present embodiment, hot / hot air can be generated only by supplying compressed air, and no electric heater or other heat source is required.
Since there is no moving part, it hardly breaks down. In addition, the number of parts is small and the structure is simple, small and lightweight,
Further, the amount and temperature of the hot air can be easily adjusted by screwing the adjusting screw 13 back and forth for adjustment. Further, an extension hose can be easily connected to the threaded portion 3b on the discharge side, that is, the tip of the cover body 3, and as shown in FIG. 1, a binder arranged so as to sandwich the outer peripheral surface of the cover portion 3 of the main body 4. By 14, it is possible to easily attach to various devices that require hot air.

[0017]

As described above, according to the hot-air generator of claim 1, the number of parts is small and the structure is simple, and a vortex is generated when compressed air passes through the screw groove of the generator. Since it generates hot air on the outside and cool air on the axis side, it does not require a heat source such as an electric heater to generate hot air, and since it has no moving parts, it has few failures and is small and lightweight. Moreover, an inexpensive product can be provided. According to the hot-warm air generator of claim 2, the adjustment screw is provided at the tip of the tubular body, and the adjustment screw is screwed forward and backward to adjust the amount and temperature of the hot-air. It can be easily adjusted.

[Brief description of drawings]

FIG. 1 is an external view showing an example of an embodiment of a hot air generator according to the present invention.

FIG. 2 is a vertical cross-sectional view showing the internal structure of the hot-air generator of the embodiment.

FIG. 3 is a perspective view of a generator.

FIG. 4 is a sectional view taken along line AA of FIG.

FIG. 5 is a vertical cross-sectional view of a generator portion of the hot air generator.

FIG. 6 is a schematic diagram showing a connection state between a hot-air generator and a supply device for supplying compressed air to the hot-air generator.

[Explanation of symbols]

 1 Hot / Hot Air Generator 4 Instrument Main Body 5 Generator 5a Screw Groove 5b Tapered Through Hole 5c Recessed Part 6a Supply Port 8 Silencer 8a Exhaust Port 9 Tubular Body 13 Adjustment Screw

Claims (2)

[Claims] 1. A cylindrical vessel body, a screw groove provided inside the vessel body, a screw groove on one end surface, and a taper through hole that expands in diameter toward the exhaust side in a shaft core portion, and an outer periphery of a front portion. A generator having concave portions formed on its surface, a supply port provided on the base end side of the vessel main body for supplying compressed air to the concave portion of the generator, and mounted on the base end side of the vessel body. A silencer having an exhaust port and a tubular body that is internally provided in the vessel body and communicates with the front of the tapered through hole of the generator are provided, and compressed air is supplied into the vessel body from a supply port of the tubular body. ,
This compressed air is supplied to the screw groove from the recessed portion of the generator, and the hot outside air generated when passing through this screw groove is passed through the tubular body from the hot air outlet provided at the tip of the main body. A hot / warm air generator characterized in that it discharges and discharges cool air on the shaft core side to the outside from a discharge port of a silencer through a tapered through hole of a generator. 2. The hot / warm air generator according to claim 1, wherein an adjusting screw for adjusting a discharge amount of hot / hot air is provided at a tip of the tubular body.