JPS63125206A - Portable hot air blower - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a portable air heater that utilizes a heat source and is suitable for drying hair, clothing, and drying the body hair of pets such as dogs and pets. . [Background Art] Portable air heaters have a variety of uses, such as drying hair and clothing at beaches, camping sites, etc., and drying pet hair. When using a battery as a heat source for a portable air heater, the amount of heat that can be extracted from a battery of the weight and size that can be carried is extremely small.Therefore, it is inappropriate to use a battery as a heat source for a portable air heater. be. Therefore, liquefied petroleum gas was discovered as something that is portable and has enough heat to produce enough warm air in a portable unit.
In fact, a portable hair dryer (Utility Model Publication No. 45-2833
No. 31) has been devised. As shown in Figure 0 in Figure 14, this portable dryer is
A wind tunnel 51 is formed in front of the air blowing means 1 in the air blowing direction, and a baking chamber 52 is provided on the lower surface side of the wind tunnel 51. A spanner 53 is arranged inside the fR baking chamber 52. The large γ burner 53 burns the fuel in the fuel gas tank 54 with a flame, and the flame heats the upper surface of the combustion chamber 52 or the lower surface of the wind tunnel 51. Then, the air sent by the blowing means 1 is heated from the bottom surface of the wind fIII 51,
Air is forced to blow out from the tip of the wind tunnel 51. Air is supplied to the gas burner 53 from the intake hole 55 on the lower surface of the m-burning chamber 52. In Figure 6, 56 is the ignition heater that is larger than α in the spanner 53, and 57 is the ignition heater 56 for the air blower 1. 58 is the blower F
The switch section 58, which is a switch section that turns on and off the ffi 1 and the large-point heater 56, includes a gas supply control valve. However, since this portable hair dryer burns with flame, it is easily extinguished by the wind sent from the blower means 1, and toxic exhaust gas is easily generated due to incomplete combustion.Furthermore, it is difficult to control the temperature, so it is harmful to hair, etc. There are disadvantages such as being dangerous. In order to overcome the drawbacks of this portable dryer, the inventor
I did a lot of research. As a result, we have developed a portable air warmer equipped with a catalytic combustion type salt-burning means that is hard to be blown out by the wind, produces fewer IB exhaust bosses, and is relatively easy to control temperature. However, such a catalytic combustion type salt burning means requires a preheating ignition device to start catalytic combustion, and there are two main types: a heater method using NikaA@ and a method using electric discharge from a piezoelectric element. The nichrome wire method has disadvantages in that the nichrome wire is easy to break, it takes time to heat the catalyst, and it further accelerates battery consumption. Methods using piezoelectric elements have the advantage of emitting a temporary flame to heat the catalyst, which takes a long time to start the catalyst's combustion, and does not require batteries and can be used semi-permanently. I had to. In order to blow out the conventional flame, two holes are provided for air intake, one hole is opened when igniting, and two holes are opened after ignition (
JP-A No. 59-15713) or conversely, after ignition, the air holes are closed to reduce the combustion gas concentration (1.8 to 8.5 in the case of butane gas).
%) was used to extinguish the flame by removing the flame, but both required members and mechanisms, making the configuration complicated and time-consuming to operate. [Object of the Invention J The present invention has been made in view of such problems,
It can generate a large amount of thermal energy, has little wind interference with combustion, produces little toxic exhaust gas, and is relatively easy to control temperature.
The object of the present invention is to provide a portable hot air heater that can easily extinguish flame after ignition. [Disclosure of the Invention] In order to achieve the above-mentioned objects, the present invention provides a blowing means, a catalytic combustion type salt baking means for heating the air sent by the blowing means, and an ignition device for igniting the salt baking means. A portable air warmer comprising: a power supply for supplying power to the blowing means; and a fuel gas tank for supplying fuel gas to the burning means, wherein the ignition means generates a flame by using spark discharge from a piezoelectric element. is characterized in that the blowing means is used to extinguish the ignition flame,
The flame generated by the ignition means is extinguished by the wind generated by the blowing means, thereby smoothly transitioning to catalytic combustion. Embodiments of the present invention will be described in detail below based on the drawings. FIGS. 1 to 3 show a portable air warmer according to the present invention. As shown in FIG. There is. and,
The main body 6 is provided with a fuel gas tank 5 and a battery storage chamber 9 inside a handle portion 8 made of a highly heat-resistant molded product, and a switch 10 is provided on the wall portion. fuel gas tank 5
is provided with a replenishment port 11, to which a replenishment gas cylinder 12 is connected to supply fuel gas such as liquefied petroleum gas. Battery storage chamber 9 is child terminal 1
3 and one terminal 14, in which a battery 4 as a power source is housed. And a battery f that can be opened and closed! 15, from which the battery 4 can be replaced. The switch 10 has a switch contact 1 that operates in conjunction with the switch 10.
6, an ignition lever 17, and a spark valve 18 are connected. Inside the wind tunnel section 7, an air blower Pi (air blowing mechanism) 1 is installed.
, a salt burning means (combustion section) 2 and an igniter fffi (ignition device) 3 are provided. The air blowing means 1 includes a motor 19 provided with a 7-ring 20, and a rectifying blade 21 provided around the motor 19. Air is sucked in and blown through a suction port 22 provided at the rear end of the wind tunnel section 7. The motor 19 is electrically connected directly to the child terminal 13 and electrically connected to one terminal 14 via the switch contact 16, so that the battery 4 supplies power to the motor 19. It has become. The salt baking means 2 includes a ceramic catalyst 23 provided with a cover 24, and a net 2
5, it is fixed in the wind tunnel W67. The ceramic catalyst 23 is a honeycomb-shaped ceramic body having a large number of ventilation holes 26 and supporting a catalyst such as platinum or /('7 i) 'F. The cover 24 may be made of silica supporting a catalyst such as platinum.The cover 24 is cylindrical and has a diameter that becomes smaller toward the rear 9, and a narrow inlet 27 is provided in the T& layer. It is fixed to the rear end of the ceramic catalyst 23 and forms a mixing chamber 28 at its inlet. By forming the inlet 27 narrowly, only a part of the blown air generated by the blowing means 1 can be taken into the mixing chamber 28. The amount of air flowing into the mixing chamber 28 is determined by the opening area of the inlet 27. A gas nozzle 30 at the tip of a gas conduit 29 introduced from the combustion gas tank 5 via the gas on-off valve 18 opens into the inlet 27 . Ignition means (piezoelectric electrode) 3 is provided in the mixing chamber 28.
is arranged, and this ignition means 3 impacts a piezoelectric element (not shown) with a hammer (not shown) in a piezoelectric device 31 to generate piezoelectricity between the middle electrode 3a and one electrode 3b. The salt-burning means 2 generates a spark discharge, ignites the gas from the gas nozzle 30, and produces a flame. are mixed in the mixing chamber 28,
While this mixed gas passes through the vent hole 26 of the ceramic catalyst 23, a catalytic combustion reaction takes place.The switch 10 is designed to slide in two steps, and at the position shown in the figure, slide it one step in the direction of arrow A. Then, the gas on-off valve 18 is opened, the switch 16 is turned on, and the blowing means 1 is energized. If you slide it one more step in the direction of arrow A, the ignition lever 17 will open as a piezoelectric device while the SRM closing valve 18 remains open. 31, press the push button 33, and press the middle electrode 3.
A is caused to discharge between the electrode 3b and the electrode 3b. Further, the switch contact 16 is turned off and the air blowing is stopped. In this position, the switch 10 has an automatic return 8!1 configuration, and if you release your hand, it will automatically return to the 112th position. At the tip outlet of the wind tunnel section 7,
A discharge nozzle 34 is attached. A discharge port grid 35 is provided inside the discharge nozzle 34 to prevent fingers or the like from being inserted into the discharge nozzle 34 . The portable air heater configured as described above operates as shown below. That is, first, the switch 10 is slid one step in the direction of arrow A. Gas is then sent from the fuel gas tank 5 through the gas conduit 29 to the gas nozzle 30, from which it is injected. On the other hand, the battery 4 supplies power to the air blowing means 1 through the switch contact 16 to start blowing air. This air blowing cleans out the gas floating in the salt baking means 2 and the wind tunnel section 7, and sends in air that is excessive for combustion. If you ignite them, you can prevent them from burning all at once and causing a small explosion. Slide the switch 10 one more step in the direction of the arrow A. Here, the blowing means 1 is stopped. Then, gas continues to be injected from the gas nozzle 30, and the ignition lever 17 presses the push button 33 of the piezoelectric device 31, impacting the piezoelectric element inside, generating piezoelectricity and sparking between the middle electrode 3a and one electrode 3b. Discharge. When the gas such as butane gas discharged from the gas nozzle 30 is injected from the gas nozzle 30, it draws in primary air and becomes ready for combustion (concentration 1.8~8.5%).Therefore, the gas is ignited by spark discharge. A flame is generated and heats the ceramic catalyst 23. After holding this state for 3 to 5 seconds, when you release the switch 10, the switch 10 automatically returns to No. 11Ii, and the power supply to the air blowing means 1 is restarted.
l! ! will be started. The air generated by the blowing means 1 enters the combustion section 2 from the inlet 27 at once, and at this time blows out the flame coming out of the gas nozzle 30, and a part of the blown air enters the combustion section 2 from the inflow port 27. As a result, gas and blown air are mixed in the mixing chamber 28, and a catalytic combustion reaction occurs while this mixed gas passes through the vent hole 26 of the ceramic catalyst 23. When the combustion is stable, the gas and the blown air have an excessive concentration (approximately The size of the inlet 27 is preferably determined so that the air is mixed at a concentration of 1%).The blown air is heated by the salt baking means 2 to become hot air, which is then discharged from the discharge nozzle 34. In this way, the user can extinguish the ignition flame and obtain stable combustion by simply sliding the switch 10. In this case, a positive temperature coefficient thermistor 36 is arranged on the circumference of the ceramic catalyst 23 inside the discharge grid 35 of the discharge nozzle 34, and is electrically connected in series with the motor 19. FIG. In this embodiment, immediately after ignition, the mixing chamber 2811 of the ceramic catalyst 23 is heated, but the entire ceramic catalyst 23 is not yet warmed, and the temperature near the static strain thermistor 36 is at room temperature level. The positive temperature coefficient thermistor 36 has a low resistance value.Therefore, voltage is applied to the motor 19 from the battery 4 without any loss, and a strong blowing force is obtained.This strong blowing air causes the gas nozzle to The flame emitted from the positive temperature coefficient thermistor 36 can be reliably extinguished.Then, when the entire ceramic catalyst 23 is heated by catalytic combustion, the temperature near the positive temperature coefficient thermistor 36 reaches 100°.
C to about 120 degrees Celsius, the resistance value of the positive temperature coefficient thermistor 36 increases, the voltage applied to the motor 19 is limited, and the air blowing means 1 is designed to generate a predetermined air volume. By changing the air volume depending on the temperature in this way, it is possible to reliably extinguish the ignition flame. A third embodiment is shown in FIGS. 6 and 7. In this embodiment, an air introduction hole 37 for taking in air is provided in the cover 24 of the catalyst of the salt baking means 2, and is directed toward the gas nozzle 30. The wind generated by the means 1 is taken in through both the inlet 27 and the air introduction hole 37, thereby ensuring flame extinguishment. In addition, by introducing air through the air introduction hole 37, there is an effect of stirring the gas and air in the mixing chamber 28, so that more uniform mixing can be achieved. Furthermore, since the air introduction hole 37 is always under pressure of air, gas does not leak from the air introduction hole 37. The fourth embodiment is shown in FIG. 8 and FIG. 9. In FIG. 8, the cover 24 is constituted by a temperature sensing element, and when the temperature is low, the inlet 27 is narrowed (as shown in FIG. 9(a)). When the temperature is high, the inlet 27 is shaped as shown in Figure 9(b).
It is structured in such a way that it is widened. Therefore, when the flame is emitted for several seconds during ignition, the inside of the mixing chamber 28 becomes quite high (about 800 to 1000° C.), and the cover 24 becomes open as shown in FIG. 9(b). When the air blowing starts, since the cover 24 of the catalyst is in an open state, a large amount of blowing air (flows in) and extinguishes the flame. When the flame is extinguished and the temperature decreases, the cover 24 becomes m as shown in Fig. 19(a). In addition, even during normal catalytic combustion, if the catalyst temperature rises for some reason, the cover 24 will be opened to take in the blown air and cool it.
It also becomes a function. The temperature sensing element forming the cover 24 in such an embodiment may be formed of bimetal, shape memory alloy, etc., and in the fourth embodiment described above, the temperature sensing element forming the cover 24
4 is formed as a temperature sensing element, and the entire inflow port 27 is expanded in diameter as shown in FIG. 9, but as shown in FIGS. Inlet 2
7, the temperature sensing element 40 is opened using its base end as a fulcrum! As shown in FIG. 10(b), the temperature sensing element 40 is opened by the ignition flame, and is ignited by the wind introduced by this opening, and the temperature increases. When the temperature decreases, the temperature sensing element 40 closes as shown in 10th (a), and an appropriate amount of air may be taken in from the inlet 27. A fifth embodiment is shown in FIGS. 12 and 13. In this embodiment, the gas nozzle 30 is formed in such a shape that its tip extends toward the periphery as shown in FIG. If formed in this way, the ignition flame can be easily extinguished by being susceptible to the influence of air blowing when extinguishing it. Furthermore, since the gas exits diagonally outward as shown in FIG. 13(b), there is an advantage that the gas can be mixed uniformly within the mixing chamber 28 and catalytic combustion can be uniform. [Effects of the Invention] In summary, the present invention provides an air blowing means and a catalyst t! that heats the air sent by the air blowing means. ! A portable hot-air fan comprising: a salt-burning type salt-burning means, an ignition means for directly igniting the salt-burning means, a power source for supplying power to the blowing means, and a fuel gas tank for supplying fuel gas to the salt-burning means. The flame generated when the ignition is ignited is extinguished by blowing air, so it can be extinguished reliably.It is small and portable, and can obtain sufficient warm air.Moreover, there is little toxic exhaust gas, and it It is safe and does not hinder combustion.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an embodiment of the present invention, Fig. 2 is a sectional view of the ceramic catalyst of the above, Fig. 13 is an overall perspective view of the same, and Fig. 4 is a sectional view of a second embodiment of the above. 5 is a circuit diagram of the same as above, FIG. 6 is a sectional view of the $3 embodiment of the same, FIG. 7 is an enlarged sectional view of the same, FIG. 8 is a sectional view of the fourth embodiment of the same, and FIG. 10(a) and 10(c) are explanatory diagrams showing the opening and closing action of the same cover as above, FIGS. The figure is a cross-sectional view of the same as above, FIG. 12 is a cross-sectional view of the fifth embodiment of the same as above, and FIG.
Figures (a) and (b) are an enlarged side view, an enlarged sectional view, and the first
FIG. 4 is a sectional view of a conventional example, in which 1 is a blower means, 2 is a salt baking means, 3 is an ignition means, and 5 is a fuel gas tank. Agent Patent Attorney Ishi 1) Ai 7 Figure 3 Figure 4 Figure 6 Figure 8 Figure 10 (a) Figure 12 (b) 304 calculations = Figure 14 procedural amendment (voluntary) December 1985 27th

Claims (7)

[Claims] (1) a blowing means, a catalytic combustion type combustion means for heating the air sent by the blowing means, an ignition means for igniting the combustion means, and a power source for supplying power to the blowing means;
A portable air heater is equipped with a fuel gas tank that supplies fuel gas to a salt-burning means, and the ignition means generates a flame by using spark discharge from a piezoelectric element, and the ignition means is used to extinguish the ignited flame. A portable air warmer characterized by utilizing the air blowing means. (2) The portable air warmer according to claim 1, wherein an air volume control means is connected to temporarily increase the air volume when air blowing starts. (3) The portable warm air according to claim 2, wherein the air volume control means is composed of a positive temperature coefficient thermistor, connected in series to the motor of the blowing means, and disposed at the inlet of the fuel means. vessel. (4) The portable air warmer according to claim 1, wherein the direction of the air from the air blowing means is partially changed so that more air hits the nozzle. (5) The portable air warmer according to claim 4, characterized in that a wind introduction window is provided in the combustion section so that the wind is concentrated into the gas nozzle when the air blowing starts. (6) The portable air heater according to claim 4, wherein the means for changing the direction of the air flow is constituted by a temperature sensing element and is arranged near the gas nozzle. (7) The portable air warmer according to claim 1, wherein the tip of the gas nozzle is configured to be oblique so that the flame can be easily extinguished by blowing air.