Abstract: A gas fireplace includes a furnace, a burner, and an air guiding device, wherein the air guiding device divides an inside of the furnace into a first chamber and a second chamber; the burner is provided in the second chamber; an air outlet of the furnace communicates with the first chamber; the air guiding device has a passageway communicating the first chamber and the second chamber, wherein a width of the passageway gradually narrows from the second chamber to the first chamber. Whereby, the hot air generated while the burner is burning gas enters the first chamber from the second chamber through the air guiding device, and then can be smoothly exhausted to outside.

Abstract: A gas-burning appliance includes a combustor and a flow guide device engaged with the combustor. The combustor has a gas outlet. The flow guide device includes a separator and two stop plates. The separator has an opening. Each of the stop plates is located at the opening, and a top edge thereof is higher than a top surface of the separator. The combustor is located below the separator with the gas outlet corresponding to a space between the stop plates. The flow guide device has at least one first air inlet, which is located below the separator, and communicates with the space between the stop plates. A gas fireplace includes a firebox, a translucent shield, and the gas-burning appliance. A separator divides the firebox into an air chamber, which receives the combustor, and a combustion chamber. Whereby, the visibility of flame and the combustion efficiency could be improved.

Abstract: A modular wick holder includes a first wick holder assembly and a second wick holder assembly joined together. The first and second wick holder assemblies are disposed symmetrical to each other. The first wick holder assembly includes a first projection, and the second wick holder assembly includes a second projection opposite and corresponding to the first projection. The first and second projections delimit a space therebetween. When the modular wick holder combines with a wick, the wick is securely held by the space. At least one adjusting member inserts through the first and second wick holder assemblies and is operable to move the first and second projections closer and to have the space include a reduced size.

Abstract: A safe gas flame device providing more visible flames includes a burner having an air inlet end and a flame exit. The combustion end is configured to include a horizontal section of a fluid transporting tube. A fluid guiding device connects to the burner and includes at least one first and at least one second supporting structures disposed on opposite sides of the fluid transporting tube, a plurality of first fluid guiding members connecting and extending transversely to the at least one first supporting structure and arranged side by side along a length of the at least one first supporting structure, and a plurality of second fluid guiding members connecting and extending transversely to the at least one second supporting structure and arranged side by side along a length of the at least one second supporting structure.

Abstract: An adjustable vortex flame device includes a control head. The control head delimits an opening and includes a flow guiding mechanism including a plurality of vanes and a control mechanism delimiting a hole. The plurality of vanes is disposed along a circumference of the opening one after another, with two adjacent vanes including a spiral air passage formed therebetween. The hole has a diametrical size which varies with respect to different sizes of vortex flames of the adjustable vortex flame device. The hole corresponds to and is in communication with the opening. The hole has a smaller diametrical size than the opening. A hollow and transparent shield is disposed above the control head and adjacent to the control mechanism. The shield delimits a space in communication with the hole of the control mechanism.

Abstract: A gas lamp includes first and second main structures. The first main structure forms a foundation of the gas lamp and includes a reservoir as a fuel tank. The second main structure is directly and releasably mounted atop of the first main structure. The second main structure includes a fluid guiding member, a carrier mechanism, a covering member, and a shield. The fluid guiding member defines a fluid entry zone and a fluid acceleration zone. The covering member includes the fluid acceleration zone circumferentially surrounded therein. The gas lamp includes the carrier mechanism adapted to be grasped, which facilitates disengagement of the first and second main structures for fuel refill and easy transportation of the second main structure.

Abstract: A flexible strain sensor includes a substrate layer made of a flexible substrate and a conductive layer coated on the substrate layer. The conductive layer is made of ductile conductive metal material. An electrode is electrically connected to each of two sides of the conductive layer. A measuring device includes the flexible strain sensor, a measuring unit electrically connected to the electrodes of the flexible strain sensor by a signal line, and a processing unit coupled to the measuring unit. A method for producing a flexible strain sensor includes preparing a flexible substrate having a substrate layer. A conductive layer is formed on the flexible substrate by sputtering using silver, wolfram, or aluminum as a target material. An electrode of conductive material is formed on each of the two sides of the conductive layer. The electrodes are electrically connected to the two sides of the conductive layer respectively.

Abstract: A hot air blower includes a shell including a fan mechanism, a combustion device, a vane mechanism, and a flame protector disposed therein. The vane mechanism includes a clipping seat and a plurality of guiding vanes extended thereon. The plurality of guiding vanes extend obliquely and prevents the air passing through the vane mechanism from generating turbulence. The clipping seat and the flame protector form a half-closed combustion chamber therebetween. Heat in the half-closed combustion chamber causes a thermal expansion of the air and, thereby increasing a speed and a volume of the air passing the guiding vanes of the vane mechanism. The heated air is discharged from an external flow tube and which controls a heating range of an area of the hot air blower.

Abstract: A flame device includes a fluid inducing assembly that can induce external air therein. A flow diverting mechanism includes a plurality of vanes. The plurality of vanes is circumferentially disposed, and each pair of adjacent vanes includes a space therebetween defining a passage which is spiral shaped. Each vane has a first section exposed to outside and not concealed by a concealing member defining a flow intake zone. Each vane has a second section encircled by the concealing member defining a flow accelerating zone. A shield is disposed above the fluid inducing assembly. A combustion head is disposed above the flow diverting mechanism and includes a mixing chamber, a flame guiding member, and a plurality of grooves. The flame guiding member is in a spaced relationship and circumferentially conceals a wall delimiting the mixing chamber.

Abstract: A metallic wick assembly includes at least one mesh member and a sleeve member. The at least one mesh member includes a first length defined between first and second ends thereof. The sleeve member is mounted around the mesh member and includes a second length defined between two longitudinal opposite ends thereof. The second length is less than the first length. A third length is defined between a distal end of the sleeve member and the first end of the mesh member. The sleeve member is slidable with respect to the mesh member to adjust the third length for controlling the flame scale.

Abstract: A vortex flame device includes a flow guiding mechanism integrated from two half flow guiding mechanisms and with which a fuel reservoir is adapted to connect. The two half flow guiding mechanisms each include a wall. The walls are engaged together in a manner movable relative to each other and each includes a plurality of vanes mounted thereon. Two adjacent vanes include a spiral air passage formed therebetween and in communication with the channel. The two half flow guiding mechanisms selectively change to a first position including a gap between free ends thereof and a second position that the free ends thereof are joined. Further, a combustion head is disposed in the channel and has at least one outlet hole that fuel of the connected fuel reservoir flows through. Further, a shield is disposed above the flow guiding mechanism.

Abstract: An adjustable vortex flame device includes a control head. The control head delimits an opening and includes a flow guiding mechanism including a plurality of vanes and a control mechanism delimiting a hole. The plurality of vanes are disposed along a circumference of the opening one after another, with two adjacent vanes including a spiral air passage formed therebetween. The hole has a diametrical size and which varies with respect to different sizes of vortex flames of the adjustable vortex flame device. The hole corresponds to and in communication with the opening. The hole is in a smaller diametrical size than the opening. A hollow and transparent shield is disposed above the control head and adjacent to the control mechanism. The shield delimits a space in communication with the hole of the control mechanism.

Abstract: An adjustable vortex flame device includes a control head delimiting a through hole with an opening and including a flow guiding mechanism including a plurality of vanes and a flow control head inserting in the through hole. The flow control head includes a first member and a second member detachably engaging with each other and delimiting a first chamber and a second chamber connecting to each other. The two channels extend in the first member and to an outer periphery of the flow control head and connect to the first chamber. The flow control head has two flow outlets defined at distal ends of the two channels and a flow inlet defined at a distal end of the second chamber. A hollow and transparent shield is disposed above the control head and delimits a space fluidly connecting to the through hole.

Abstract: A wick configured from a single metallic meshed wick material continuously includes a spiral section with a shape including at least one loop, a folded section with a shape including a fold, a first length extending away from the spiral section to the fold and along a first imaginary plane and a second length extending from the fold to the spiral section and along a second imaginary plane, and a wrapped section with a shape including at least one contour conforming shapes of the spiral and folded sections.

Abstract: A modular wick holder includes a first wick holder assembly and a second wick holder assembly joined together. The first and second wick holder assemblies are disposed symmetrical to each other. The first wick holder assembly includes a first projection and the second wick holder assembly includes a second projection opposite and corresponding to the first projection. The first and second projections delimit a space therebetween, wherein when the modular wick holder combines a wick, the wick is securely held by the space. At least one adjusting member inserts through the first and second wick holder assemblies and is operable to make the first and second projections closer and the space include a reduced size.

Abstract: A metallic wick assembly includes at least one mesh member and a sleeve member. The at least one mesh member includes a first length defined between first and second ends thereof. The sleeve member is mounted around the mesh member and includes a second length defined between two longitudinal opposite ends thereof. The second length is less than the first length. A third length is defined between a distal end of the sleeve member and the first end of the mesh member. The sleeve member is slidable with respect to the mesh member to adjust the third length for controlling the flame scale.

Abstract: A vaporizing device includes a reservoir defining a receiving space. A wick is engaged in the receiving space. A heat conducting member caps on the reservoir and includes a hole extending therethrough connecting and in communication with the receiving space and including a recess. The recess is delimited by an inner ridge, an outer ridge and a floor side of the heat conducting member. The outer ridge is radially spaced from the inner edge. The floor side extends radially between the inner and outer edges. The inner ridge delimits an opening corresponding to the hole. The wick has an end extending through the hole and the opening. Liquid to be vaporized by the vaporizing device is filled in the recess and fuel is filled in receiving space.

Abstract: A safe combustion device includes a housing. A wick is disposed in the housing. The wick has a top end at a first distance from a bottom surface of the housing. A guiding device is connected to the housing and includes at least one shade. The at least one shade has bottom and top sides at second and third distances from the bottom surface of the housing respectively. The second distance is shorter than the first distance. The first distance is shorter than the third distance. The at least one shade has an inner lateral side adjacent to the wick. The at least one shade and the housing include a flow passage formed therebetween.

Abstract: A metallic wick assembly includes at least one mesh member and a sleeve member. The at least one mesh member includes a first length defined between first and second ends thereof. The sleeve member is mounted around the mesh member and includes a second length defined between two longitudinal opposite ends thereof. The second length is less than the first length. A third length is defined between a distal end of the sleeve member and the first end of the mesh member. The sleeve member is slidable with respect to the mesh member to adjust the third length for controlling the flame scale.

Abstract: A device in a paintball gun includes a main body extended longitudinally and along a first axial line and including a plurality of air passages and an air channel. The plurality of air passages are circumferentially disposed and each are extended obliquely and have a first end defining an opening on an outer periphery of the main body and a second end extended to the air channel. Air flowing in the paintball gun is directed through the plurality of air passages into the device, and vortices are generated in the air channel to impart a spin to the paintball being launched.