Abstract: The present disclosure relates to a control method of a gas furnace comprising a step for measuring an indoor temperature, a step for comparing the indoor temperature with a set temperature for heating, and a step for operating the gas furnace in weak heating with a predetermined heating capacity which is lower than a maximum heating capacity of the gas furnace, when the set temperature for heating is higher than the indoor temperature by a temperature value which is less than a predetermined temperature value, wherein the predetermined heating capacity for weak heating is maintained at a current heating capacity for weak heating, when the gas furnace operates in weak heating, and when an operating duration with the current heating capacity for weak heating is less than a first time value.

Abstract: A gas furnace according to an embodiment of the present disclosure includes: a mixer for mixing air and a fuel gas, which are introduced through an intake pipe and a manifold, respectively, to form a mixture; a mixing pipe through which the mixture, having passed through the mixer, flows; a burner assembly for producing a combustion gas by burning the mixture having passed through the mixing pipe; a heat exchanger through which the combustion gas flows; an exhaust pipe through which an exhaust gas, as the combustion gas having passed through the heat exchanger, is discharged outside of the gas furnace; and an inducer for inducing a flow of a fluid through the intake pipe, the mixer, the mixing pipe, the burner assembly, the heat exchanger, and the exhaust pipe. In this case, the mixer has a front end connected to the intake pipe, a rear end connected to the mixing pipe, and a side surface connected to the manifold.

Abstract: A gas furnace according to an embodiment of the present disclosure includes: a mixer for mixing air and a fuel gas, which are introduced through an intake pipe and a manifold, respectively, to form a mixture; a mixing pipe through which the mixture, having passed through the mixer, flows; a burner assembly for producing a combustion gas by burning the mixture having passed through the mixing pipe; and heat exchangers through which the combustion gas flows, wherein the burner assembly includes: a plurality of burners, to which a flame produced during combustion of the mixture is anchored; a mixing chamber serving as a medium for delivering the mixture from the mixing pipe to the burners. Accordingly, a full premixing mechanism may be provided, and a mixing rate of the fuel gas and the air may be maximized, thereby greatly reducing nitrogen oxide emissions.

Abstract: Provided is a gas furnace including a primary heat exchanger and a secondary heat exchanger through which a combustion gas produced by the combustion of a fuel gas flows. The gas furnace includes: a coupling box serving as an intermediary to connect the primary heat exchanger and the secondary heat exchanger; a collect box connected to the secondary heat exchanger, for letting in the combustion gas passed through the secondary heat exchanger; an inducer connected to the collect box, for inducing a flow of the combustion gas; and a bypass pipe connected to one side of the coupling box and including a bypass pipe for guiding the combustion gas passed through the primary heat exchanger to a hot water supply tank for supplying hot water to an indoor space.

Abstract: 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.

Abstract: A gas furnace includes: a burner in which a mixture of air and fuel gas burns; a heat exchanger through which a combustion gas produced by the combustion of the mixture flows; a duct including a room air duct through which air coming from a room passes and a supply air duct through which air supplied to the room passes; a blower that induces a flow of the room air supplied as the supply air to the room through the heat exchanger; and a humidification and dehumidification device with no water supply installed on one side of the supply air duct. The amount of moisture contained in the supply air is adjusted by an adsorbent coated on the surface of the humidification and dehumidification device with no water supply.

Abstract: Provided is a gas furnace. The gas furnace includes: a manifold with an exhaust port for discharging fuel gas; a nozzle attached to the exhaust port; a burner for burning a mixture of air and fuel gas ejected from the nozzle; a primary heat exchanger that provides a first flow path and allows a combustion gas produced by the combustion of the mixture to move through the first flow path; and a secondary heat exchanger located adjacent to the primary heat exchanger, that provides a second flow path and allows the combustion gas discharged from the primary heat exchanger to move through the second flow path, wherein the secondary heat exchanger includes: at least one tube forming the second flow path; and a baffle inserted into the at least one tube, the baffle including: a plate longitudinally extending in a lengthwise direction and twisted in the shape of a screw; and a plurality of holes formed to penetrate the plate.

Abstract: An air conditioning device includes a vapor injection cycle in which an operating speed of a compressor is adjusted to improve efficiency, and a method for controlling the device. The air conditioning device includes an inner heat-exchanger for exchanging heat between a first portion of refrigerant passing through a condenser and a second portion of the refrigerant branched from the first refrigerant, and an injection channel through which the second portion of the refrigerant is injected into the compressor. The inner heat exchanger includes an outer tube and an inner tube disposed inside the outer tube. The first portion of the refrigerant flows into the inner tube, while the second portion of the refrigerant flows into the outer tube. Thus, when a variation of air-conditioning load is small and an injection super-heating temperature is low, the device enables reduction of the compressor rotation speed to ensure high injection super-heating temperature.

Abstract: A gas furnace includes a mixing pipe through which a mixture formed by mixing fuel gas and air flows; a burner assembly that generates combustion gas by burning the mixture that passed through the mixing pipe; and a heat exchanger through which the combustion gas flows. In this case, the burner assembly includes a burner in which flame generated when the mixture is burned is seated; and a mixing chamber that mediates delivery of the mixture from the mixing pipe to the burner, thereby significantly reducing NOx emission.

Abstract: Disclosed is a gas furnace including a mixer configured to mix air and fuel gas introduced from an intake pipe and a manifold respectively so as to produce an air-fuel mixture, a mixing pipe configured to allow the air-fuel mixture having passed through the mixer to flow therein, a burner assembly configured to combust the air-fuel mixture having passed through the mixing pipe so as to generate combustion gas, heat exchangers configured to allow the combustion gas to flow therein, an exhaust pipe configured to discharge exhaust gas, which is the combustion gas having passed through the heat exchangers, to the outside. The gas furnace further includes a recirculator installed around the exhaust pipe and configured to guide a portion of the exhaust gas flowing in the exhaust pipe to the mixer, and may thus greatly reduce or fundamentally block NOx emissions.

Abstract: The present invention relates to a method of controlling a gas furnace that performs heating operation according to a heating signal formed of one of a weak heating signal and a strong heating signal. The method includes: (a) receiving the heating signal; (b) determining whether the heating signal is the weak heating signal or the strong heating signal; (c) calculating a certain weak heating capacity smaller than a maximum heating capacity of the gas furnace, when the heating signal is the weak heating signal; and (d) operating a weak heating of the gas furnace with the calculated certain weak heating capacity, wherein the step (c) includes calculating the weak heating capacity according to a difference between a temperature of air (hereinafter, an intake air temperature) sucked into the gas furnace and a reference temperature set based on the intake air temperature.

Abstract: A method of controlling a gas furnace comprising a gas valve for supplying a fuel gas to a manifold; a burner through which the fuel gas discharged from the manifold passes; an igniter for igniting a mixture of fuel gas passed through the burner and air; and an inducer for generating a flow in which a combustion gas generated by the burning of the mixture is discharged to an exhaust pipe via a heat exchanger, wherein the gas furnace performs a heating operation according to a heating signal or a heating stop according to a stop signal, includes the steps of: (a) receiving any one of the heating signal or the stop signal; (b) transmitting a signal to operate the inducer when the heating signal is received; (c) operating the igniter; (d) transmitting a signal to open the gas valve; (e) detecting whether the gas valve is opened or closed; (f) detecting a flow rate of the fuel gas in the manifold; and (g) displaying a normal operation of the heating operation, based on information detected in the steps (e) and (f

Abstract: Disclosed is an air conditioner comprising: a heat exchange module comprising i) a compressor in which refrigerant circulates, a first heat exchanger, an expansion valve, and a second heat exchanger, and ii) an absorbent disposed in an outer surface of the first and second heat exchangers; at least one humidity sensor; and a controller which controls to stop a normal operation and perform a drying operation for supplying air to any one of the first and second heat exchangers served as an evaporator, when it is determined that a certain drying operation condition is satisfied based on humidity information of air passed through the any one served as the evaporator, during the normal operation in which the any one of the first and second heat exchangers serves as an evaporator and the other serves as a condenser.

Abstract: The air conditioner apparatus according to the present invention includes: a case which forms a first common passage, and a second common passage; and a suction guide which is disposed in each of the first common passage and the second common passage, which guides air flown into the case to a first desiccant heat exchanger which is disposed in the first common passage or a second desiccant heat exchanger which is disposed in the second common passage, and which forms a compressor accommodation chamber where a compressor is accommodated, wherein at least two cooling holes for sending some of the air flown into the case to the compressor accommodation chamber and for sending air flowing inside the compressor accommodation chamber to the first common passage or the second common passage are formed in the suction guide.

Abstract: A scroll compressor according to the present disclosure and an air conditioner having the scroll compressor may include a drive motor provided in an inner space of a casing; a rotation shaft coupled to the drive motor; a frame provided on a lower side of the drive motor; a first scroll provided on a lower side of the frame, one side of which is formed with a first wrap; a second scroll in which a second wrap engaged with the first wrap is formed, and the rotation shaft is eccentrically coupled to the second wrap to overlap therewith in a radial direction, a compression chamber is formed between the first scroll and the second scroll while being orbitally moved with respect to the first scroll, and the compression chamber is connected to an evaporator outlet side of the cooling cycle; and an injection unit one end of which is branched from a refrigerant pipe between the condenser and the evaporator, and the other end of which is connected to the compression chamber through the first scroll.

Abstract: The present invention relates to a method of controlling an RPM of a blower for a gas furnace that passes air to be supplied to a room around a heat exchanger of a gas furnace. The method includes: starting operation of the gas furnace; measuring an air temperature in an outlet side of the gas furnace; measuring the RPM of the blower; determining whether the air temperature falls within a reference temperature range; and adjusting the RPM of the blower such that the air temperature falls within the reference temperature range.

Abstract: A 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, wherein 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.

Abstract: An ejector and a refrigeration cycle apparatus having an ejector are provided. The ejector may include an ejector body having a suction portion into which a high pressure refrigerant and a low pressure refrigerant may be suctioned, and having a mixing portion provided at one side of the suction portion and configured to mix the high pressure refrigerant with the low pressure refrigerant; a nozzle movably provided in the suction portion, and configured to inject the high pressure refrigerant; a needle inserted into an end of the nozzle and configured to control a flow sectional area of the nozzle; and a nozzle drive configured to drive the nozzle so as to be relatively movable with respect to the mixing portion and the needle. As a flow sectional area of a high pressure refrigerant passage and a flow sectional area of a low pressure refrigerant passage are controlled, a driving efficiency of the ejector may be enhanced.

Abstract: An air conditioning device includes a vapor injection cycle in which an operating speed of a compressor is adjusted to improve efficiency, and a method for controlling the device. The air conditioning device includes an inner heat-exchanger for exchanging heat between a first portion of refrigerant passing through a condenser and a second portion of the refrigerant branched from the first refrigerant, and an injection channel through which the second portion of the refrigerant is injected into the compressor. The inner heat exchanger includes an outer tube and an inner tube disposed inside the outer tube. The first portion of the refrigerant flows into the inner tube, while the second portion of the refrigerant flows into the outer tube. Thus, when a variation of air-conditioning load is small and an injection super-heating temperature is low, the device enables reduction of the compressor rotation speed to ensure high injection super-heating temperature.

Abstract: A scroll compressor according to the present disclosure and an air conditioner having the scroll compressor may include a drive motor provided in an inner space of a casing; a rotation shaft coupled to the drive motor; a frame provided on a lower side of the drive motor; a first scroll provided on a lower side of the frame, one side of which is formed with a first wrap; a second scroll in which a second wrap engaged with the first wrap is formed, and the rotation shaft is eccentrically coupled to the second wrap to overlap therewith in a radial direction, a compression chamber is formed between the first scroll and the second scroll while being orbitally moved with respect to the first scroll, and the compression chamber is connected to an evaporator outlet side of the cooling cycle; and an injection unit one end of which is branched from a refrigerant pipe between the condenser and the evaporator, and the other end of which is connected to the compression chamber through the first scroll.