Disclosed herein is a combustion apparatus which comprises a chamber having a apertured rotatable tubular auger mounted between end walls of the chamber to convey particulate material from the region of the chamber proximate the feed inlet to the combustion gas outlet and a blower connected to the opposite end of the tubular auger and configured to blow gas into the bore of the auger and out through the apertures into the chamber.

Example furnaces and methods related thereto include a burner box including at least one burner configured to combust a fuel/air mixture. In addition, the furnace includes a first blower including an inlet nozzle having an air inlet and fuel inlet. The inlet nozzle is configured such that operation of the first blower is to pull air and fuel into the inlet nozzle to produce the fuel/air mixture at a fuel/air ratio that is configured to produce flue products having less than 14 Nano-grams per Joule of nitrogen oxides when combusted. Operation of the first blower is configured to push the fuel/air mixture into the burner box. Further, the furnace includes a heat exchanger assembly fluidly coupled to the burner box through a vestibule, and a second blower configured to pull the flue products through the heat exchanger assembly.

A cooking apparatus, having a body defining an interior cooking chamber for cooking food, a pellet supply portion coupled to the body and including a hopper for storing fuel, a combustion chamber for burning the fuel and heating the cooking chamber, a feeding mechanism for supplying fuel from the hopper to the combustion chamber, and a removable collection receptacle located below the combustion chamber. The apparatus also includes an ash-shaker located between the collection receptacle and the combustion chamber, the ash-shaker including an external actuator that controls one or more moving elements located in the combustion chamber, wherein movement of the moving elements encourages unburned debris in the combustion chamber to fall into the receptacle, after which the collection receptacle can be removed and the unburned debris discarded.

A cooking apparatus, having a body defining an interior cooking chamber for cooking food, a pellet supply portion coupled to the body and including a hopper for storing fuel, a combustion chamber for burning the fuel and heating the cooking chamber, a feeding mechanism for supplying fuel from the hopper to the combustion chamber, and a removable collection receptacle located below the combustion chamber. The apparatus also includes an ash-shaker located between the collection receptacle and the combustion chamber, the ash-shaker including an external actuator that controls one or more moving elements located in the combustion chamber, wherein movement of the moving elements encourages unburned debris in the combustion chamber to fall into the receptacle, after which the collection receptacle can be removed and the unburned debris discarded.

An air blower and a combustion device including the air blower are provided.

An air blower includes an impeller housed in a casing and rotating. The impeller includes multiple blades to form multiple inter-blade passages, and a central space portion. When the impeller rotates, air flowing into the central space portion through an air intake port of the casing passes through the inter-blade passages at an outward side. To reduce noise generated when the air passes through the inter-blade passages, each blade includes: multiple first concavo-convex portions, with a first surface side being concave and a second surface side on the other side being convex, from among a first and a second surface corresponding to a front and a rear surface of each blade; and multiple second concavo-convex portions, with the second surface side being concave and the first surface side being convex, contrary to the first concavo-convex portions.

An air blower and a combustion device including the air blower are provided.

An air blower includes an impeller housed in a casing and rotating. The impeller includes multiple blades to form multiple inter-blade passages, and a central space portion. When the impeller rotates, air flowing into the central space portion through an air intake port of the casing passes through the inter-blade passages at an outward side. To reduce noise generated when the air passes through the inter-blade passages, each blade includes: multiple first concavo-convex portions, with a first surface side being concave and a second surface side on the other side being convex, from among a first and a second surface corresponding to a front and a rear surface of each blade; and multiple second concavo-convex portions, with the second surface side being concave and the first surface side being convex, contrary to the first concavo-convex portions.

The flare gas system has a flare gas assembly having an air pipe with an open upper end, a first conduit in surrounding relationship to the air pipe and having a first conduit open upper end, a second conduit in surrounding relationship to the first conduit and having a second conduit upper end, and a third conduit in surrounding relationship to the second conduit and having a third conduit upper end, the upper ends of the air pipe, the first conduit and the second conduit being below the upper end of the third conduit, there being an air source connected to the air pipe to provide air to the air pipe at a desired flow rate. There is at least one second flare gas assembly operatively connected to the first flare gas assembly, the second flare gas assembly having a tubular housing in which is mounted a spring biased orifice plate, the tubular housing being in open communication with the annulus formed below the second and third conduits.

The flare gas system has a flare gas assembly having an air pipe with an open upper end, a first conduit in surrounding relationship to the air pipe and having a first conduit open upper end, a second conduit in surrounding relationship to the first conduit and having a second conduit upper end, and a third conduit in surrounding relationship to the second conduit and having a third conduit upper end, the upper ends of the air pipe, the first conduit and the second conduit being below the upper end of the third conduit, there being an air source connected to the air pipe to provide air to the air pipe at a desired flow rate. There is at least one second flare gas assembly operatively connected to the first flare gas assembly, the second flare gas assembly having a tubular housing in which is mounted a spring biased orifice plate, the tubular housing being in open communication with the annulus formed below the second and third conduits.

Provided is a blowing device capable of improving a noise reduction effect as compared with a conventional case, and a combustion device including the blowing device is provided. In a rear side shroud of an impeller configuring a blowing device, a first inclined surface portion that is inclined so as to be located frontward toward the radial outer side is formed in a front surface portion of the rear side shroud in a region close to the outer peripheral edge, while a second inclined surface portion that is inclined so as to be located rearward toward the radial outer side is formed in a front surface portion of the rear side shroud in a region closer to the center than the first inclined surface portion.

Provided is a blowing device capable of improving a noise reduction effect as compared with a conventional case, and a combustion device including the blowing device is provided. In a rear side shroud of an impeller configuring a blowing device, a first inclined surface portion that is inclined so as to be located frontward toward the radial outer side is formed in a front surface portion of the rear side shroud in a region close to the outer peripheral edge, while a second inclined surface portion that is inclined so as to be located rearward toward the radial outer side is formed in a front surface portion of the rear side shroud in a region closer to the center than the first inclined surface portion.