Provided is a condensate water trap for a gas furnace that collects and discharges condensate water produced in a heat exchanger and an exhaust pipe. The condensate water trap includes: a first inlet through which the condensate water produced in the heat exchanger is introduced; a second inlet through which the condensate water produced in the exhaust pipe is introduced; a first flow path through which the condensate water coming from the first inlet passes; a second flow path through which the condensate water coming from the second inlet passes; an outlet through which the condensate water introduced through the first and second inlets is discharged; a third flow path into which the residual condensate water passed through at least one of the first and second flow paths but not discharged through the outlet is introduced; and a sensing mechanism that senses if the amount of residual condensate water introduced into the third flow path is greater than or equal to a given amount.

A gas furnace is provided. The gas furnace includes a combustion part in which a fuel gas is burnt to generate a combustion gas, a heat exchanger having a gas flow path through which the combustion gas flows, a blower configured to blow air around the heat exchanger, and an inducer configured to discharge the combustion gas from the heat exchanger. The heat exchanger includes at least one single path in which a single gas flow path is formed a single-multiple return bend configured to communicate with the single path and convert a flow direction of the combustion gas, and at least one multiple path having a plurality of paths that communicate with the single-multiple return bend and form multiple gas flow paths.

Disclosed are a gas furnace and an air conditioner having the same. The gas furnace includes: a burner for burning fuel; a heat exchanger extending long and providing a passage for combustion gas generated by the burner; a blower for causing a flow of air passing around the heat exchanger; and a plurality of guides passing through the heat exchanger and spaced apart from each other in a longitudinal direction of the heat exchanger. The heat exchanger includes: a first tube forming an entry of the heat exchanger; a second tube forming an exit of the heat exchanger and spaced apart from the first tube in a direction crossing the longitudinal direction of the heat exchanger; and a bend connecting the first tube and the second tube. The plurality of guides is alternately disposed in a direction in which the first tube and the second tube are spaced apart from each other.

Disclosed are a gas furnace and an air conditioner having the same. The gas furnace includes: a burner for burning fuel; a manifold providing the fuel to an entry of the burner; a heat exchanger spaced apart from an exit of the burner and providing a passage for combustion gas generated by the burner; an inducer for causing a fluid to flow through the burner and the heat exchanger; a blower for causing a flow of air passing around the heat exchanger; and an air shutter positioned between the manifold and the entry of the burner. The air shutter includes: a housing having an inner space that communicates with the manifold and the entry of the burner; and a primary hole formed to penetrate the housing and able to be opened and closed.

Disclosed are a gas furnace and an air conditioner having the same. The gas furnace includes: a fuel valve; a manifold providing a passage of fuel passing through the fuel valve; a plurality of burners provided to burn fuel provided from the manifold and spaced apart from each other in one direction; a plurality of heat exchangers providing a passage of combustion gas generated by the plurality of burners; and a blower for causing a flow of air passing around the heat exchanger. The manifold includes: a first tube having one end connected to the fuel valve and forming a first passage; a second tube extending in the one direction, forming a second passage, and facing at least one of the plurality of burners; a third tube extending in the one direction, forming a third passage, and facing remaining burners of the plurality of burners; and a three-way valve connected to the first tube, the second tube, and the third tube.

A furnace with at least one adjustable baffle assembly, a heating, ventilation, and/or air conditioning (HVAC) system incorporating the same, and a method of operating the HVAC system are provided. The at least one adjustable baffle assembly is disposed adjacent to the furnace heat exchanger in the furnace. The at least one adjustable baffle assembly is configured to actuate, between a cooling position and a heating position. The at least one adjustable baffle assembly may be in a heating position when the HVAC system is in a heating mode. The at least one adjustable baffle assembly may be in a cooling position when the HVAC system is in a cooling mode. The actuation of the adjustable baffle assembly may increase the efficiency of the furnace and/or HVAC system.

A clamshell heat exchanger for use in a combustion furnace of an HVAC system is presented that includes in one instance two passageways coupled by a turnaround passageway. The first passageway that receives the combustion products diverges. A cross section of the first passageway resembles a tear drop or air foil with the widest portion closest to the second passageway. The second passageway also diverges from the turnaround portion towards the outlet. The second passageway may include a baffle that forms two flow streams. Other embodiments are presented.

The present disclosure provides a production system and a production method of potassium manganate, belonging to the technical field of production of potassium manganate. The production system of potassium manganate comprises a hot air generating device, a production device and a circulating air pipeline. The hot air generating device is configured provide hot air in a manner of burning fuel gas. The production device is configured to absorb heat in the hot air generated by the hot air generating device. The circulating air pipeline is configured to introduce the hot air passing through the production device into the hot air generating device to adjust temperature of the hot air.

One aspect of this disclosure provides a heating chamber for a gas furnace that comprises opposing halves joined together. The joined opposing halves form a clamshell panel having at least one truncated corner located adjacent a curve located at a back end of a chamber path of the one or more clamshell heating chambers.

Provided is a condensate water trap for a gas furnace that collects and discharges condensate water produced in a heat exchanger and an exhaust pipe. The condensate water trap includes: a first inlet through which the condensate water produced in the heat exchanger is introduced; a second inlet through which the condensate water produced in the exhaust pipe is introduced; a first flow path through which the condensate water coming from the first inlet passes; a second flow path through which the condensate water coming from the second inlet passes; an outlet through which the condensate water introduced through the first and second inlets is discharged; a third flow path into which the residual condensate water passed through at least one of the first and second flow paths but not discharged through the outlet is introduced; and a sensing mechanism that senses if the amount of residual condensate water introduced into the third flow path is greater than or equal to a given amount.