Gas combustor with function of adjusting combustion angle

A gas combustor with function of adjusting combustion angle includes: a handgrip part; a fastening rack, disposed at a top end of the handgrip part, and having at least one positioning disk having an outer circumference annularly disposed with plural positioning slots; and a flame device, wherein one end of flame device has a pivotal part pivoted with the at least one positioning disk, and correspondingly disposed with an elastic buckle mechanism capable of being buckled in each positioning slot at a location corresponding to the at least one positioning disk; with each elastic buckle mechanism being displaced along the outer circumference of the corresponding at least one positioning disk, and buckled in one of the positioning slots according to a desired inclined angle, the flame device is provided with a combustion angle adjusting effect relative to the handgrip part.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to gas combustor, especially to a gas combustor with function of adjusting combustion angle.

2. Description of Related Art

Fire is a must have element in our lives, with fire, we can cook food, can be provided with lighting, and the fire can also be used for combustion operations such as forging, soldering and welding. Take a canned gas for example, the canned gas can be utilized for refilling a lighter or connected to a connection ring of a portable stove, liquid gas is provided therein for lighting objects or cooking food, thereby bring conveniences to users; and the canned gas is easy to store and carry around so the gas combustor still plays an important role in our lives and cannot be easily replaced.

With the convenience provided by the canned gas, there are two types of gas combustors in the marketplace, U.S. Pat. No. 5,466,149 (corresponding to Taiwan Patent Registration No. 110192) and U.S. Pat. No. 5,564,919 (corresponding to Taiwan Patent Registration No. 112652) have disclosed a gas combustor, in which a gas discharge valve at the top end of a canned gas is pivoted with a filling nozzle at the bottom end of a heating torch, so liquid gas can be injected into a fuel storage tank, thereby enabling a gas discharge device disposed at the top end of in a fuel gas storage tank to be provided with gas and a flame device to be provided with fuel gas. Another type of gas combustor is illustrated as following: U.S. Pat. No. 5,735,684 (corresponding to Taiwan Patent Registration No. 134495) and U.S. Pat. No. 5,816,794 (corresponding to Taiwan Patent Registration No. 122521) have disclosed a gas combustor, in which a base is disposed at the bottom portion thereof as to be pivoted with a canned gas available in the commercial market, and after the fuel in the canned gas is gasified, the gas can be supplied to a combustion device disposed at an upper portion of the gas combustor, thereby being suitable to be applied in combustion operations, for example soldering, welding or others.

However, in the above-mention gas combustors, the angle defined by the flame device and the gas storage tank and the angle defined by the base and the combustion device are fixedly arranged, for example the flame device is arranged in 90 degrees relative to the gas storage tank, and the combustion device is arranged greater than 90 degrees, such as 125 degrees, relative to the base, so that a user can hold the gas storage tank or the base for performing a combustion operation.

Moreover, disadvantages of the above-mentioned gas combustors are provided as follows. When the gas combustor is desired to be operated in a small operation space, because the angle of the combustion device is fixedly arranged, if the length is not sufficient, the combustion device could not reach an object to be heated, and another gas combustor with a longer length has to be utilized for replacement, thus the user may need to prepare gas combustors with various angles for being suitable to be applied in different operation spaces.

Accordingly, if the gas combustor could be provided with a function of adjusting combustion angles, the combustion angle can be properly adjusted with respect to different operation spaces, so that the combustion operation can be facilitated, meanwhile unnecessary waste for buying gas combustors with different angles can be prevented; as such, the above-mentioned shortages and disadvantages shall be seriously concerned by the skilled people in the art.

SUMMARY OF THE INVENTION

One primary objective of the present invention is to provide a gas combustor with function of adjusting combustion angle, which has advantages of a combustion angle being capable of being properly adjusted with respect to different operation spaces, and saving unnecessary waste for buying gas combustors with different angles.

For achieving said objective, one technical solution provided by the present invention is to provide a gas combustor with function of adjusting combustion angle, which includes: a handgrip part, disposed with a gas discharge device having a gas discharge valve, a gas conveying soft pipe sleeved with the gas discharge valve, and a gas ejecting nozzle disposes at a downstream end of the gas conveying soft pipe; a fastening rack, disposed at a top end of the handgrip part, and having at least one positioning disk having an outer circumference annularly disposed with a plurality of positioning slots; and a flame device, having a support arm, wherein one end of the support arm has a pivotal part pivoted with the at least one positioning disk, and the pivotal part is correspondingly disposed with an elastic buckle mechanism capable of being buckled in each of the positioning at a location corresponding to the at least one positioning disk; the support arm has at least one air inlet hole communicated with a mixing chamber, wherein the gas ejecting nozzle is disposed at an upstream end of the mixing chamber and arranged to be adjacent to the at least one air inlet hole, a flame nozzle is disposed at a downstream end of the mixing chamber; with each of the elastic buckle mechanisms being displaced along the outer circumference of the corresponding at least one positioning disk, and being buckled in one of the positioning slots with respect to a desired inclined angle, the flame device is provided with a combustion angle adjusting effect relative to the handgrip part.

According to one embodiment of the present invention, the elastic buckle mechanism has a sleeve pipe having a bottom end thereof disposed with a block edge, a buckle tenon and an stretching spring are disposed in the sleeve pipe, and a locking unit is utilizing for being locked at a top end of the sleeve pipe, so that two ends of the stretching spring are respectively abutted against the locking unit and a flange of the buckle tenon, the block edge can be served as a blocking member for the flange of the buckle tenon, and an arc-shaped tenon head of the buckle tenon can be disposed outside the sleeve pipe, the tenon head can be displaced along the outer circumference of the corresponding at least one positioning disk, and buckled in one of the positioning slots according to a desired inclined angle.

According to one embodiment of the present invention, the handgrip part is a gas container utilized for storing liquid gas, and a bottom end of the gas container is provided with a gas filling nozzle.

According to one embodiment of the present invention, an insertion slot allowing an insertion part of the fastening rack to be inserted is formed in the gas container, and a top end of the insertion part is disposed with the at least one positioning disk having the outer circumference annularly formed with the plurality of positioning slots.

According to one embodiment of the present invention, the amount of the at least one positioning disk is two, and a recess allowing the pivotal part to be inserted and pivoted is formed between the two positioning disks.

According to one embodiment of the present invention, an accommodation slot allowing the piezoelectric device to be accommodated and positioned is formed below the at least one positioning disk of the fastening rack, and a free end of a conducive wire of the piezoelectric device is extended towards the flame nozzle of the flame device, and spaced with an interval relative to the flame nozzle.

According to one embodiment of the present invention, a connection part capable of being received in an outer pipe is disposed at a middle portion of the support arm, at least one air inlet hole is formed at the connection part, the conductive wire is allowed to pass the outer pipe, and the flame nozzle is enclosed by the outer pipe, so that a combustion flame is able to be ejected from an opening end of the outer pipe.

According to one embodiment of the present invention, an air adjusting ring is disposed at an outer side of the at least one air inlet hole, and the air adjusting ring is formed with at least one ventilation hole at a location corresponding to the at least one air inlet hole; by rotating the air adjusting ring, an aperture defined by the at least one ventilation hole shielding the at least one air inlet hole can be adjusted, so that the air amount entering the at least one air inlet hole can be determined.

According to one embodiment of the present invention, the flame nozzle is disposed in a heat insulation member made of a ceramic material, the heat insulation member is disposed in the outer pipe, one end of the heat insulation member is abutted against an inward-retracted edge formed at the opening end of the outer pipe, an elastic unit is disposed between another end of the heat insulation member and a convex ring of the support arm, so that the heat insulation member can be positioned in the opening end of the outer pipe, the conducive wire is allowed to pass the connection part, the outer pipe and the heat insulation member, and arranged to be near the flame nozzle.

According to one embodiment of the present invention, an rotary inner shell is disposed from the fastening rack to the connection part, the rotary inner shell is composed of an inner left shell and an inner right shell being engaged, thereby enabling the support arm and the elastic buckle mechanism between the connection part to the fastening rack to be enclosed, wherein a main shaft is laterally extended from the at least one positioning disk, a positioning shaft is located at a periphery of the main shaft; a pair of shaft holes allowing the main shaft to be pivoted is formed in the rotary inner shell at a location corresponding to the main shaft, and a pair of positioning slots allowing the positioning shaft to be inserted are formed at a location corresponding to the positioning shaft.

According to one embodiment of the present invention, a fastening case is further provided, the fastening case is composed of an outer left shell and an outer right shell being engaged, and at least one connection member is utilized for connecting the fastening case and the fastening rack, so that a front end and a top end of the fastening case is formed with an opening slot allowing the flame device and the rotary inner shell to be rotated therein; wherein, the gas discharge device further has a gas discharge pressing plate having one end disposed with the gas discharge valve; a location defined at a front lower side of the opening slot is disposed with a safety switch, a rear side of the safety switch is disposed with a pressing block capable of pressing the piezoelectric device, and a pressing plate for enabling the gas discharge pressing plate to generate a leverage effect.

According to one embodiment of the present invention, the safety switch further has a locking bolt capable of being left/right slid and capable of being abutted against a stop block of the fastening rack while being in a non-slid status, thereby forming a locking and non-pressing status; the locking bolt is linked with a left/right displacement of a sliding member disposed at a front side of the safety switch for allowing the locking bolt to be released from the stop block, thereby forming an unlocking and pressing status.

According to one embodiment of the present invention, the safety switch further has an auxiliary spring capable of being abutted against a stop wall of the fastening rack.

According to one embodiment of the present invention, the gas discharge valve further has a regulation unit, the regulation unit has a sleeve ring sleeved with the gas discharge valve, and a regulation rod laterally extended from the sleeve ring, and the regulation rod is able to be protruded from a case slot of the fastening case.

According to one embodiment of the present invention, the fastening case further has a continuous button, the continuous button is disposed in a button hole of the fastening case, and a recovery spring is disposed between the continuous button and the button hole, a buckle hook is extended from a rear end of the continuous button, and a buckle slot allowing the buckle hook to be buckled is formed in the safety switch at a location corresponding to the buckle hook; when the safety switch is in a pressed status, the continuous button is able to be pressed, so that the recovery spring is pressed, and the buckle slot and the buckle hook are in a buckled status, the safety switch is unable to return to an initial location, and the pressing plate is able to continuously press the gas discharge pressing plate for allowing the gas discharge valve to be kept in a gas supplying status.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Please refer fromFIG. 1toFIG. 5, the present invention provides a gas combustor, which includes a handgrip part1, a gas discharge device2, a fastening rack3, a piezoelectric device4, a flame device5and a fastening case6.

The handgrip part1is utilized for being held by a hand of a user; according to one embodiment, the handgrip part1is a gas container. The gas container is utilized for storing liquid gas, a bottom end of the gas container is provided with a conventional gas filling nozzle (not shown in figures), so that the liquid gas (fuel gas) can be replenished. The gas discharge device2is disposed at a top end of the gas container.

The gas discharge device2is known as a prior art, and has a gas discharge valve21disposed at the top end of the gas container, a gas conveying soft pipe22having an upstream end thereof sleeved with the gas discharge valve21, a gas ejecting nozzle23disposes at a downstream end of the gas conveying soft pipe22, and a gas discharge pressing plate24having one end thereof engaged with the gas discharge valve21. When another end of the gas discharge pressing plate24is pressed, a leverage effect is generated by the gas discharge pressing plate24for lifting the gas discharge valve21, thereby forming an opened status, so that the gasified liquid gas stored in the handgrip part1is allowed to enter to gas conveying soft pipe22from the gas discharge valve21and rapidly ejected from the gas ejecting valve23so as to enter the flame device5.

The gas discharge valve2further has a regulation unit25. The regulation unit25has a sleeve ring251radially sleeved with the gas discharge valve21, and a regulation rod252laterally extended from the sleeve ring251. The regulation rod252is able to be protruded from the fastening case6. As such, when the regulation rod252is pulled, the gas discharge valve21is able to be rotated with the sleeve ring251, so that a gas discharge amount of the fuel gas can be regulated.

An insertion part31inserted and fastened in an insertion slot11preformed in the gas container is provided at a bottom end of the fastening rack3, a top end of the insertion part31is disposed with at least one positioning disk32having an outer circumference annularly formed with a plurality of positioning slots321; as shown inFIG. 2andFIG. 3, the amount of the at least one positioning disk32is preferably to be two, and a recess322is formed between the two positioning disks32. Wherein, a main shaft33is laterally extended from the at least one positioning disk32, a positioning shaft34is located at a periphery of the main shaft33, the applications of the main shaft33and the positioning shaft34will be disclosed in the followings.

A accommodation slot35allowing the piezoelectric device4to be accommodated is formed below the at least one positioning disk32of the fastening rack3, and a free end of a conducive wire41of the piezoelectric device4is extended into the flame device5.

The flame device5has a support arm51, one end of the support arm51is disposed with a pivotal part511pivoted with the at least one positioning disk32; as shown inFIG. 2andFIG. 3, the pivotal part511is inserted in the recess322, and a shaft pin512is allowed to pass the at least one positioning disk32, for example the main shaft33of the at least one positioning disk32, and pivoted with the pivotal part511. An elastic buckle mechanism52is disposed above the pivotal part511, arranged at a location corresponding to each positioning disk32and capable of being buckled in each positioning slot321.

The elastic buckle mechanism52has a sleeve pipe521having a bottom end thereof disposed with a block edge521a(as shown inFIG. 4), a buckle tenon522and an stretching spring523are sequentially disposed in the sleeve pipe521, and a locking unit524, for example a screw bolt, is utilizing for being locked at a top end of the sleeve pipe521, so that two ends of the stretching spring523are respectively abutted against the locking unit524and a flange522aof the buckle tenon522, and the block edge521aof the sleeve pipe521can be served as a blocking member for the flange522aof the buckle tenon522, and an arc-shaped tenon head522bof the buckle tenon522can be disposed outside the sleeve pipe521, the tenon head522bcan be displaced along the outer circumference of the corresponding positioning disk32, and buckled in one of the positioning slots321according to a desired inclined angle, thus the flame device5, for example the support arm51, can be provided with a function of adjusting combustion angle relative to the handgrip part1.

Please refer toFIG. 5, a connection part53capable of being received in an outer pipe54is disposed at a middle portion of the support arm51, at least one air inlet hole531is formed at one side of the connection part53, the at least one air inlet hole531is communicated with a mixing chamber532formed in the support arm51, and the gas ejecting nozzle23is disposed at an upstream end of the mixing chamber532and arranged to be adjacent to the at least one air inlet hole531; as such, an operation of the gas ejecting nozzle23ejecting the fuel gas can drive air to be introduced from the at least one air inlet hole531, and the introduced air is allowed to enter the mixing chamber532for being mixed, thereby forming a mixed fuel gas. The mixed fuel gas is ejected from a flame nozzle55disposed at a downstream end of the mixing chamber532, and the flame nozzle55is enclosed by the outer pipe54, so that the combustion flame is able to be ejected from an opening end of the outer pipe54.

Moreover, the flame nozzle55is disposed in a heat insulation member56made of a ceramic material, the heat insulation member56is disposed in the outer pipe54, one end of the heat insulation member56is abutted against an inward-retracted edge541formed at the opening end of the outer pipe54, an elastic unit514, for example a spring, is disposed between another end of the heat insulation member56and a convex ring513of the support arm51, so that the heat insulation member56can be positioned in the opening end of the outer pipe54. The conducive wire41is allowed to pass the connection part53of the support arm51, the outer pipe54and the heat insulation member56, and an interval is formed between the free end of the conductive wire41and the flame nozzle55, so that a static spark can be generated for igniting the mixed fuel gas ejected from the flame nozzle55.

Moreover, an air adjusting ring57is disposed at an outer side of the at least one air inlet hole531, the air adjusting ring517is composed of a half left ring571and a half right ring572being engaged, and at least one ventilation hole573is formed in the air adjusting ring57. By rotating the air adjusting ring57, an aperture defined by the at least one ventilation hole573shielding the at least one air inlet hole531can be adjusted, so that the air amount entering the at least one air inlet hole531can be determined so as to adjust the strength of the flame.

Furthermore, an rotary inner shell58is disposed between the fastening rack3and the connection part53of the support arm51, the rotary inner shell58is composed of an inner left shell581and an inner right shell582being engaged, thereby enabling the support arm51and the elastic buckle mechanism52between the connection part53and the fastening rack3to be enclosed. A pair of shaft holes583allowing the main shaft33to be pivoted are formed in the rotary inner shell58at a location corresponding to the main shaft33, and a pair of positioning slots584allowing the positioning shaft34to be inserted are formed at a location corresponding to the positioning shaft34. When the positioning shaft34is abutted against two ends of the pair of positioning slots584, the flame device5is formed with a rotating limitation, for example 90 or 180 degrees, relative to the fastening rack3.

The fastening case6is composed of an outer left shell61and an outer right shell62being engaged, and at least one connection member63, for example a screw, is utilized for passing the outer right shell62and the fastening rack3then being locked in the outer left shell61, so that a front end and a top end of the fastening case6is formed with an opening slot64allowing the flame device5and the rotary inner shell58to be rotated therein. A location defined at a front lower side of the opening slot64is disposed with a safety switch65, for example the safety switch disclosed in Taiwan Patent Application No. 105128535 (corresponding to China Patent Application No. 201710573119.1 and U.S. patent application Ser. No. 15/356,568), therefore the safety switch65is not provided with any further illustration. A rear side of the safety switch65is disposed with a pressing block651capable of pressing the piezoelectric device4, a locking bolt652capable of being left/right slid and capable of being abutted against a stop block36preformed on the fastening rack3while being in a non-slid status, a pressing plate653for enabling the gas discharge pressing plate24to generate the leverage effect, and an auxiliary spring654capable of being abutted against of a stop wall37of the fastening rack3. When the safety switch65is in a non-operated status, the locking bolt652is abutted against the stop block36, thereby forming a locking and non-pressing status. The locking bolt652is linked with a left/right displacement of a sliding member655disposed at a front side of the safety switch65for allowing the locking bolt652to be released from the stop block36, thereby forming an unlocking and pressing status.

As shown inFIG. 5, when the safety switch65is pressed by the finger of the user, the pressing block651can synchronously press the piezoelectric device4, so that one end of the gas discharge pressing plate24is touched and pressed during the displacement of the pressing plate653, and another end of the gas discharge pressing plate24is enabled to lift the gas discharge valve21for allowing the fuel gas to pass the gas conveying soft pipe22so as to be ejected from the gas ejecting nozzle23and enter the mixing chamber532, and external air is introduced via the at least one ventilation hole573of the air adjusting ring57and the at least one air inlet hole531of the connection part53so as to enter the mixing chamber532for being mixed with the fuel gas, thereby forming the mixed fuel gas. Static electricity generated by the piezoelectric device4is allowed to pass the conductive wire41, so that the static spark can be generated between the conductive wire41and the flame nozzle55at a location where the heat insulation member56is disposed, and the mixed fuel gas ejected from the flame nozzle55can be ignited for performing a combustion operation.

When the safety switch65is no longer pressed by the finger of the user, the safety switch65is able to return to an initial non-operated position through the piezoelectric device4and an energy releasing effect provided by the auxiliary spring654, and the sliding member655is able to return to an initial locked position though an energy releasing effect provided by an internal elastic unit656(as shown in FIG.10), for example a spring, so that children can be protected from operating the gas combustor.

Moreover, the fastening case6is formed with a case slot66allowing the regulation rod252to be protruded at a location corresponding to the regulation rod252, so that the air output amount of the gas discharge valve21can be regulated.

Please refer toFIG. 2,FIG. 3andFIG. 10, the fastening case6further has a continuous button67. The continuous button67is disposed in a button hole68of the fastening case6, and a recovery spring671is disposed between the continuous button67and the button hole68. A buckle hook672is extended from a rear end of the continuous button67, and a buckle slot657allowing the buckle hook672to be buckled is formed in the safety switch65at a location corresponding to the buckle hook672. When the safety switch65is in a pressed status, the continuous button67can be pressed by the user, the recovery spring671is pressed, and the safety switch65is no longer required to be pressed by the user, thus the buckle slot657and the buckle hook672are in a buckled status, and the safety switch65is unable to return to the initial position, and the pressing plate653is able to continuously press the gas discharge pressing plate24for allowing the gas discharge valve21to be kept in a gas supplying status, thus an inconvenience of the user being required to continuously press the safety switch65is avoided.

When the gas supplying status is desired to be terminated, the user only has to press the safety switch65again to allow the buckle hook672to be released from the buckle slot657, meanwhile an energy releasing effect is provided by the recovery spring671for enabling the continuous button67to be recovered to the initial non-operated position.

As shown inFIG. 4, which shows an angle relation of the flame device5shown inFIG. 1relative to the handgrip part1, for example the flame device5is formed with a 90-degree angle relation relative to the handgrip part1, it is clearly shown inFIG. 4that the pair of buckle tenons522of the elastic buckle mechanism52are buckled in the pair of positioning slots321at a first location at the outer circumference of the pair of positioning disks32, so that the flame device5is formed with a vertical combustion angle relative to the handgrip part1.

Please refer toFIG. 6andFIG. 7, when the combustion angle is desired to be adjusted, the user only has to pull the flame device5, so that the pair of buckle tenons522of the elastic buckle mechanism52are released from the first location, and displaced along the outer circumference of the pair of positioning disks32until being buckled in the pair of positioning slots321at a second location at the outer circumference, thus the flame device5is formed with an inclined combustion angle, for example 135 degrees, relative to the handgrip part1.

Please refer toFIG. 8andFIG. 9, if the combustion angle at the second location is unable to satisfy the actual needs, the user can continue to pull the flame device5, so that the pair of buckle tenons522of the elastic buckle mechanism52are released from the second location, and displaced along the outer circumference of the pair of positioning disks32until being buckled in the pair of positioning slots321at a third location at the outer circumference, thus the flame device5is formed with a linear combustion angle, for example 180 degrees, relative to the handgrip part1.

Based on what has been disclosed above, advantages achieved by the present invention are as follows. The combustion angle can be properly adjusted with respect to different operation spaces, thus disadvantages of the conventional flame device being formed with a fixed combustion angle relative to the handgrip part and wasting money for buying gas combustion tools with various angles can be overcome. Accordingly, the gas combustor with function of adjusting combustion angle provided by the present invention in novel and more practical in use comparing to prior arts.