TWI244538B - An improved structure of gas hot-air gun - Google Patents

Abstract

An improved structure of gas hot-air gun according to this invention includes a main body, a fan, an ignition device, a nozzle, and a switch set. The main body of the hot-air gun consists of a tube part and a grip part. There is a heating chamber inside the tube part, and a battery set and a gas bottle inside the grip part. The nozzle and the gas bottle are connected to each other. The switch set includes an electrical power switch and an ignition switch. Triggering the electrical power switch lets the nozzle to eject gas into the heating chamber; and pressing the ignition switch lets the ignition device to ignite the gas for generating heat source in the heating chamber. The fan blows the hot air in the heating chamber out of the main body of the gun. Moreover, the heating chamber is equipped with a thin metal plate for regulating airflow and a catalyst-adding device for preventing visible flame. This hot-air gun is compact and convenient to carry and very practical; therefore it is a very advanced design.

Description

1244538 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention mainly discloses a type of gas hot air grabbing improved structure. [Previous technology] According to the structure of the society, the society is changing with each passing day. The quality of life required by people is relatively improved. The requirements for things have also changed from the old thinking of "useable." Only continuous progress or innovation In order to meet the needs of modern society. Please refer to the “Hot air grab internal structure improvement device” of Chinese Patent Bulletin No. 8 3 7 95, which includes a casing 1, a hot air tube holder 2, a thermally insulated magnetic holder 3, a wind tube 4 and a supply air. Device 5; the housing 1 houses the above components, and the hot air tube holder 2 is wound with an electric heating coil 6 on the surface, and is sleeved in the heat-insulating magnetic holder 3, and the air tube 4 is set on the outermost layer and can be fixed in the housing 1. A person who generates high temperature via the electric heating coil 6 and blows hot air out of the air duct 4 by the air blowing device 5. The conventional hot air grab structure still has many shortcomings in practice, because it must be connected to a power outlet through a power cord to make electricity (heating of the heat coil 6 generates high temperature, which is quite inconvenient in carrying, and if When working outdoors, it is often impossible to find a power plug and not be able to carry out the construction, and it is quite troublesome to carry a generator 5 by itself, and the electric heating coil 6 is not easy to cool down after the south heat is generated. Pack up and easily burn the user, there is no safety at all. This kind of design that is not suitable for industrial use is very impractical, so it is necessary to improve. In view of the lack of the above-mentioned conventional structure, the inventor has invented a " "Gas hot air grab improved structure", it is a place that can overcome the above-mentioned conventional products

1244538 V. Description of the invention (2) There are disadvantages. [The invention is based on the source socket, which is convenient and easy to construct, and the circle generating south fan is to be cleaned up for improvement.] It is clear that the technical problem to be solved by the "gas hot air grab improvement structure" is known that the hot air grab improvement structure must be adopted A power cord is used to connect electricity to make the heating coil generate heat and generate high temperatures. When carrying it, it is not as good as when working outdoors. It is often difficult to find a power plug and you must not carry a generator by yourself. It is not easy to cool down after heating, and it is not easy to heat it immediately after construction is completed, and it is easy to burn the user. There is no safety at all. The invention has a "gas hot air grab improved structure, a blower, an ignition, a pipe part and The handle, the group and a gas tank, the spray device, a nozzle and a switch tube are equipped with a power switch to generate heat inside and outside the heating chamber. Among them, the use of open flame is practical, so the other descriptions are related to the gas and an ignition switch. The ignition switch is activated so that the blower will press it and press the heat source, and a lifetime catalyst is installed in the reheating room. The invention is a very advanced The purpose of the step, the advantages and the drawings related to the present invention are more obvious. The heating chamber is connected to the handle tank, and the power switch (the rectifying gold design in the heating chamber is used to guide the heating chamber is light and lightweight. The novel features include a group; the switch set inside the head makes the nozzle burning fluid hot air sent to the sheet side portable. A body and a body include a battery including a spray fluid for heating out of the body and an avoidable belt, which will be quite detailed from the following

Page 6 of 1244538 V. Description of the invention (3) [Embodiment] Regarding the technology, means and effects used in the present invention, a better example will be given in conjunction with the details of the drawings as described below. Tea such as the one shown in Figure 1 to Figure 7 'is for illustrative purposes only, and is not subject to such a structure in patent applications. According to the first to third drawings, the present invention includes a main body, a blower 20, an ignition device 30, a nozzle 40 and a switch group 50; the body 10 has an official section 11 and A handle section 2 and a tube section 1 with a heating chamber

'There is a gas tank 122 inside the handle 12, and the switch group 50 is toggled to cause the nozzle 40 to spray the fluid in the gas tank 1 2 2 into the heating chamber.]] 1, and the ignition device 3 ignites the fluid and heats it. A heat source is generated in the chamber 1 丨, and the hot air in the heating chamber 11 is sent out of the main body 10 by a blower 20;

The aforementioned body 10 includes a tube portion 1, a handle portion 1 2, an air inlet 13 and an air outlet 1 4; a heating chamber 1 1 1 and a mixing chamber 11 are provided at the front end of the tube portion 11. 2. The heating chamber 1 π is provided with a metal sheet 1 1 3 in the shape of a star fruit and a catalyst 1 1 4 'The metal sheet 1 1 3 is located at one end of the heating chamber 111 near the front of the pipe part 1 1 and contacts The medium 1 1 4 is located at one end of the heating chamber 1 1 1 near the rear of the pipe section 11. A metal foil i 丨 3 is provided with a combustion chamber 丨 5. The mixing chamber 11 2 is provided in the heating chamber π 丨 opposite to the pipe section; 11 front On one side, one end of the mixing chamber 1 12 is formed near one end of the metal sheet 1 j 3, and the neck 116 is connected to the combustion chamber 115 of the metal sheet 11 3, and several channels are opened around the mixing chamber 11 2 At the suction port Π 7, a channel 118 is formed between the star fruit-shaped metal sheet 113 and the tube part 11, and a combustion chamber 115 and a constriction 1 1 6 of the mixing chamber 112 of the metal sheet 113 are provided with a controllable gas flow direction. Tubular metal

Page 7 1244538 V. Description of the invention (4) Net 1 1 9. This cylindrical metal net is a round mesh with a dense mesh. It is all 9 crimes. One end of the near-air outlet 14 is also attached with a connection below the pipe 11 Of net 120; the handle portion 12 is a two-capacity chamber 124 opposite to the pipe portion 11, and the first-: ^ -handle 12 is provided with a first container chamber 123 and a second pool group and a gas 23 and a second container chamber I24 A fluid, usually a liquid energy tile, is installed separately: the wide gas tank 122 contains a combustible cover 1 2 5 for covering the bottom end of the first handle 12 and a movable 盍 > a smoke capital, Prepared to 123 and the second chamber 124; the air inlet is used to discharge the 13 series installation in the pipe section 11; the rear end of the second section is for the gas to flow into the pipe section, the air inlet 1 3 A number of guards 1 3 1 are provided to prevent fingers from being accidentally inserted and injured; the air outlet 14 is located at the front end of the pipe section JJ; a blower 2 0 'is installed at the end of the pipe section 丨 丨It can be pumped from the air inlet 13 and sent into the official department 11. In this embodiment, an axial flow motor is used. The blower 20 includes a motor 21, a blade 22, and a temperature sensor 23. Among them, the motor 2 1 is located on one side near the air outlet 1 4 and the blade 22 is provided on the motor 21 and is located on one side near the air inlet 1 3. It can be rotated by a horse: up to 2 1 and the temperature sensor 2 3 is installed It is set on the pipe part 11 near the heating chamber 111, which can keep the blower 20 to supply air after use, cool the heating chamber 1 π to a certain temperature, and stop the blower 20 from running;

An ignition device 30 is disposed in the metal sheet 113 of the heating chamber 111. In the present embodiment, it is disposed in the combustion chamber 115 of the metal sheet 11 3 and can ignite the gas entering the heating chamber 11 1; a nozzle 40 It is installed in the pipe part 11 of the main body 10, and is located between the blower 20 and the mixing chamber 1 12. One end of the nozzle 40 is in phase with the gas tank 1 22

Page 8 1244538 V. Description of the invention (5) Communication; A switch group 50 is provided at one end of the handle portion 12 of the body 10 near the pipe portion 1]. The switch group 50 includes a power switch. 5 1. An ignition switch 5 2 and a regulating valve 5 3. The power switch 5 1 is connected to the battery pack 1 2 1 and the blower 2Ό by wires. The power switch 5 1 is provided with a control lever 5 1 1 to control the gas tank. 1 2 2 is opened and closed, and the ignition switch 5 2 is connected by a wire between the battery pack 1 2 1 and the ignition device 30. The regulating valve 5 3 is provided on the gas tank 1 2 2 and the gas tank 1 can be adjusted. 2 2 traffic. Referring to the fourth figure, when the power switch 5 1 is turned on, its control lever 5 1 1 causes the gas tank 122 to be turned on, and gas gas is ejected through the nozzle 40. At this time, the blower 20 draws air from the air inlet 13 and Sent to the mixing chamber 11 2 to mix the air and the gas gas into a mixed gas, and when the mixed gas in the mixing chamber 1 1 2 passes through the shrinkage 11 16, the shrinkage Π 6 is a tapered caliber Therefore, it has the effect of compressing the mixed gas, so that the mixed gas is discharged at a faster speed at the time of the shrinkage 116, and at this time, the mixed gas discharged at a high speed enters the combustion of the metal sheet 1 1 3

The chamber 115 is blown to the cylindrical metal mesh 119 (refer to the fifth figure) that can guide the flow of the mixed gas. Since the circular metal mesh 120 at the front end of the cylindrical metal mesh 1 1 9 and the cylindrical metal mesh 11 9 form two The road is blocked, and the circular metal mesh 1 20 has a dense mesh, so it can effectively inhibit the gas from advancing, and most of the mixed gas is sent out in a radial direction. When the ignition switch 5 2 is pressed, the ignition device 30 is started to ignite the mixed gas to generate a flame. When the flame burns, the surrounding metal foil 1 1 3 is dispersed into several flames and burns when the flame burns to make the metal foil Π The temperature of 3 gradually rises for the first combustion, and the air sent by the blower 20 passes through the path of the peach-shaped metal sheet U3 11 8 hours.

Page 9 1244538 V. Description of the invention (6) The carambola-shaped metal sheet 1 1 3 has a good heat exchange rate, so the air can take away the heat of the metal sheet 1 1 3 to form hot air, and this hot air is brought to touch Medium 1 1 4 and catalyst 1 1 4 can fully burn a small amount of gas in hot air and completely reduce the generation of carbon monoxide. This is a secondary combustion. Since the hot air passes through the second combustion, The temperature of the hot air can be increased again to obtain a safe and high-temperature gas. In addition, the catalyst 1 1 4 can avoid the generation of open flames and effectively prevent the flames still burning in the metal sheet 11 3 from ejecting the gas outlet 1 4 外。 4 outside. Among them, the mixed gas needs a good mixing ratio to obtain a good combustion rate in the combustion chamber 1 1 5. Therefore, when the oxygen content in the mixed gas is too low, the suction port 11 around the combustion chamber 11 5 is opened. 7 The air can be replenished in a timely manner, which is based on the principle of the shrinkage of the mixing chamber 11 2 and the gradual reduction of the caliber 11 6, so that the air can be sucked in from the suction port 1 1 7 and mixed with the gas and enter the combustion chamber 1 1 5 to stabilize In addition, the gas flow can also be controlled by the regulating valve 5 3; because the metal sheet 11 3 in the heating chamber 1 1 1 has good thermal conductivity, it can be quickly ignited by the combustion chamber 11 5 after ignition. The temperature rises, and if the flame in the heating chamber 1 1 1 is incompletely burned, it will produce toxic carbon monoxide, which is harmful to the human body. In order to make the flame burn completely, the catalyst 1 1 4 can achieve this purpose. The catalyst 1 1 4 It can produce chemical reaction with the gas in the combustion, transform the burned gas into non-toxic carbon dioxide, and form a safe gas discharge. The catalyst 1 1 4 can avoid the open flame and effectively prevent the flame from leaking out of the air outlet 14 outer. In addition, a temperature sensor 2 3 connected to the blower 20 is installed on the pipe portion 1 1 near the heating chamber 1 11. When the power switch 5 1 is turned off, the nozzle

Page 10 1244538 V. Description of the invention (7) 4 0 Stop gas injection, the heating chamber 111 ends the combustion process and still maintains a high temperature state. At this time, the temperature sensor 2 3 senses the high temperature of the heating chamber 1 1 1 and causes the blower. 20 is energized, so that the blower 20 runs and keeps the air supply to reduce the temperature of the heating chamber 1! J. Since the metal sheet 11 3 has a good thermal conductivity, it can quickly absorb cold air to cool down and help the heating chamber 1 11 to cool. When the temperature sensor 23 senses that the heating chamber 1 1 1 reaches a certain cooling temperature, the blower 20 will be powered off. This design makes the present invention more convenient to carry and less likely to cause burns. Referring to the sixth figure, when the battery pack 121 or the gas tank 122 is consumed, it is convenient to replace the new battery pack 121 or the gas tank. It is only necessary to open the cover 125 to take it out of the replacement action phase 124, and then The new product can be replaced, and the gas tank of the chamber 123 or the second container can be filled. Since the present invention is a tank IK, it can also be charged, so the trouble of connecting the power cord is avoided, and the rolling body burns. It is still portable and can still generate high-temperature wind. I reduce the occupied space, so it can be matched with a set of wind hood 15, which will be used; = 欵, refer to the seventh figure, this article, in order to quickly heat the pipe 'in use More ;; (The 15-step invention of pipe fittings placed in the air collecting hood. The ruler is convenient, so it can be summarized as described above. The present invention 1. The present invention "gas hot air grab improvement knot. Structure has The following advantages: There are several suction ports around for air-to-air structure. Among them, the mixing chamber has a better ratio. It can be used for mixing into 4 chaos to achieve better mixing, in which the metal flakes are heated or cooled, and there are 2 · According to the present invention, the improved structure of gas hot air grab has good heat exchange rate and heat conduction Rate, catch quickly ^

1244538 V. Description of the invention (8) The effect of rectification. 3. The "gas hot air grab improvement structure" of the present invention, wherein the catalyst can help the complete combustion of the mixed gas, reduce the generation of carbon monoxide, increase the temperature of the gas, and effectively avoid the generation of open flames. 4. Ben Timing's "Gas hot air grab improved structure", in which the temperature sensor can keep the blower air supply after the power switch is turned off, and cool the heating chamber to a certain temperature before stopping the blower operation. 5. The invention of the "gas hot air grab improved structure", in which the body occupies a small space and is easy to carry, and the battery pack and the gas tank can be replaced with new products and continued to be used, so the invention is extremely progressive. The invention has been described with reference to the detailed drawings of the preferred embodiment. Those skilled in the art can derive many variations from the preferred embodiment without departing from the scope of the invention. Therefore, the preferred embodiment does not limit the scope of the invention. The scope of the invention is defined in the scope of patent application.

Page 12124538 Brief description of the drawings [Brief description of the drawings] The first figure is a three-dimensional appearance of the present invention; the figure is a three-dimensional exploded view of the present invention, and the __ is a cross-sectional view of the present invention 9 The fourth diagram This is the state of use diagram of the present invention. The fifth diagram is a partial enlarged view of the invention. Fig. 5 shows the flow direction of the mixed gas. The diagram is a sectional view of the invention. The diagram shows a replaceable battery pack and a gas appliance. Fig. 7: A perspective view of the invention. 9 indicates that a set of air hoods can be installed. Attachment:: It is the patent case No. 8 3 795 of our country's patent publication [> [Simplified description of the element symbol] 10 body 1 1 pipe part 1 1 1 heating chamber 1 1 2 Mixing chamber 11 3 Metal sheet 11 4 Catalyst 11 5 Combustion chamber 1 1 6 Reduction 1 1 7 Suction port 1 1 8 passage 119 cylindrical metal mesh 120 circular metal mesh 12 handle 1 2 1 battery pack 1 2 2 gas Tank 1 2 3 First chamber 124 Second chamber 125 Lid 1 3 Air inlet 1 31 Guardrail 14 Air outlet 1 5 air hood · 2 0 blower 2 1 motor 22 blade 2 3 temperature sensor 3 0 ignition device 40 nozzle 50 switch group 5 1 power switch 5 3 control valve 5 1 1 control lever 5 2 ignition switch

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Claims (1)

1244538 6. Scope of patent application 1. An improved structure of a gas hot air gun, comprising: a body having a tube portion and a handle portion; a heating chamber and a mixing chamber are provided in the tube portion; a battery pack and a gas are provided in the handle portion A gas tank, which contains a combustible fluid; a power-sending machine, which is arranged in the tube section and can be operated by the battery pack; an ignition device is installed in the tube section; a nozzle is installed in the body The fluid in the gas tank can be accepted and sprayed out; a switch set is arranged on the body, the switch set includes a power switch and an ignition switch; thereby, the power switch is turned to make the nozzle eject Fluid mixing chamber_, and the gas in the mixing chamber flows to the heating chamber. Pressing the ignition switch causes the ignition device to ignite the gas to generate a heat source, and the blower sends the hot air in the heating chamber out of the body. 2. According to the improved structure of gas hot air grabbing described in item 1 of the scope of patent application, the pipe end is provided with several through holes for gas inflow. 3. According to the improved structure of gas hot air grabbing described in item 1 of the scope of patent application, the front end of the pipe part can be equipped with an air collecting hood to effectively concentrate the output of high temperature gas. * 4. The improved structure of gas hot air grab as described in item 1 of the scope of patent application, wherein the handle is provided with a first container and a second container, and the battery pack is installed in the first container of the handle. The gas tank is installed in the second container of the handle. Page 14 1244538 VI. Scope of patent application 5. The improved structure of the gas heat gun described in item 1 of the scope of patent application, where the gas tank can be a filled gas tank. 6. The improved structure of gas hot air grabbing as described in item 4 of the scope of patent application, wherein the handle is provided with a movable lid, which can form the first container and the second container into a blue open or closed state. 7. The improved structure of gas hot air grab as described in item 1 of the patent application scope, wherein the switch group further includes a regulating valve. 8. The improved structure of the gas heat gun according to item 1 of the scope of patent application, wherein the switch unit is arranged on the handle of the body. 9. The improved structure for hot gas grabbing according to item 1 of the scope of patent application, wherein the power supply is electrically connected to the blower and the battery pack, and the power switch is provided with a control rod to control the opening and closing of the gas tank. 10. The improved structure of the gas heat gun according to item 1 of the scope of the patent application, wherein the ignition-on relationship is connected to the ignition device. 11. The improved structure of gas hot air grab as described in item 7 of the scope of patent application, wherein the regulating valve can control the flow rate of the gas tank% 2. 2. The improved structure of gas hot air gun as described in item 1 of the scope of patent application, wherein heating The chamber system is connected to the mixing chamber. 1 3. The improved structure of the gas hot air gun according to item 1 of the scope of the patent application, wherein the heating chamber is provided at the front end of the pipe portion, and the mixing chamber is provided at one side of the heating chamber near the tail end of the pipe portion. 1 4. The improved structure of hot gas blasting according to item 1 of the scope of patent application, wherein the mixing chamber is formed with a constriction near one end of the heating chamber, and its caliber is smaller than that near one end of the nozzle. Page 15 1244538 6. Scope of patent application 1 5. The improved structure of the gas heat gun described in item 14 of the scope of patent application, in which several suction ports are provided around the mixing chamber for air inflow to achieve a better mixing ratio. 1 6. The improved structure of the gas hot air gun described in item 1 of the scope of patent application, wherein the heating chamber is provided with a metal sheet, which has good heat exchange rate and thermal conductivity, can be quickly heated or cooled, and has the function of rectification. . 1 7. The improved structure of gas hot air grabbing described in item 1 of the scope of patent application, wherein the heating chamber is equipped with a catalyst, which can help the complete combustion of the mixed gas, reduce the generation of carbon monoxide, increase the temperature of the gas, and effectively Avoid open flames. 1 8. The improved structure for hot gas grabbing according to item 16 of the scope of patent application, wherein one end of the metal sheet is provided with a combustion chamber, and the combustion chamber is connected to the mixing chamber. 19. The improved structure for hot gas grabbing as described in item 18 of the scope of patent application, wherein the combustion chamber can be provided with an ignition device therein. 2 0. The tile hot air rush improvement structure described in item 1 of the scope of the patent application, wherein the blower is arranged at the tail end in the pipe section. 2 1. The gas hot air rush improvement structure described in item 20 of the scope of the patent application The blower has a motor and a blade, wherein the motor is located on one side near the front end of the pipe part, and the blade is located on one side near the tail end of the pipe part. 2 2. The hot gas as described in item 20 of the scope of patent application Improve the structure, in which the air blower has a temperature sensor, which is installed on the tube near the heating chamber, can keep the blower to supply air after the power switch is turned off, and cool the heating chamber to a certain temperature before stopping The blower is running. Page 12 1244538 Page π