KYUNGDONG NAVIEN CO., LTD.

Provided is a combustion chamber assembly. The combustion chamber includes a heat exchange assembly that defines a combustion chamber configured such that a combustion reaction is performed in an interior thereof, a burner that is provided in the interior of the heat exchange assembly to form the combustion reaction in the combustion chamber, and a mixing chamber that is coupled to the burner and the heat exchange assembly. The mixing chamber includes a burner coupling area that is coupled to the burner, an assembly coupling area that is provided on an outer side of the burner coupling area in the circumferential direction, and that is coupled to the heat exchange assembly, and a guide rib that may protrude from the burner coupling area toward the interior of the heat exchange assembly.

An air conditioner includes: an evaporator, an expansion valve, a compressor, and an evaporative condenser through which a refrigerant circulates; a water injection module for spraying water into the evaporative condenser; and a controller for controlling an operation of the water injection module, wherein the water injection module includes a water injection valve for opening and closing a flow path through which water is supplied and a supply line supplying water to the evaporative condenser, and the controller is connected to the water injection valve and control the opening and closing operations of the water injection valve according to detected humidity and determines a rotational speed of the compressor.

The water treatment system may include a filter module that is configured to be operated in a removal mode, and in a regeneration mode for regenerating an electrode, a supply passage that supplies the raw water to the filter module, a discharge passage that guides the soft water discharged from the filter module to a demand destination, a bypass passage that is branched from the supply passage at a point on an upstream side of the filter module with respect to a flow direction of the raw water, and is connected to the discharge passage while bypassing the filter module, a bypass sensor that is disposed on the bypass passage, and senses flow of the raw water through the bypass passage, and a processor electrically that is connected to the filter module and the bypass sensor.

A water softening system includes a main line that supplies raw water to a first consumption point in a consumption site, a filter device that is provided in the main line and that removes at least a part of ionic substances contained in the raw water supplied through the main line and releases soft water containing a smaller amount of ionic substances than the raw water to the main line, a first bypass line that connects a first bypass point and a confluence point and diverts the raw water in the main line from the first bypass point to the confluence point, the first bypass point being one point of the main line that is located upstream of the filter device and the confluence point being another point of the main line that is located downstream of the filter device, and a second bypass line that is connected to a second bypass point and that diverts the soft water, which is released from the filter device to the main line, to a second consumption point in the consumption site, the second bypass point being another point of the main line that is located between the filter device and the confluence point.

An air conditioner is provided that includes an evaporator, an expansion valve, a compressor, and an evaporative condenser through which refrigerant circulates. The air conditioner further includes an outdoor unit in which the evaporative condenser is disposed; an indoor unit in which the evaporator is disposed; and a control unit connected to the indoor unit and the outdoor unit; wherein the evaporative condenser includes a cooling flow path through which a refrigerant passes and a condenser injection water module providing water to the cooling flow path, the outdoor unit includes a first control valve for controlling water supplied to the condenser injection water module, and the control unit is connected to the first control valve and the evaporative condenser, and changes the amount of water supplied through the first control valve according to operating conditions.

Disclosed is an air heating apparatus including an expansion tank which preserves water, a water heater which receives heat from a combustion gas generated through a combustion reaction and heats the water, a heating heat exchanger which receives the water heated by the water heater and exchanges heat with air that is to be discharged for heating, a fan which sends the air to the heating heat exchanger, and a case, in which the water heater, the expansion tank, the heating heat exchanger, and the fan are disposed in an interior thereof.

Provided is an air conditioning system. The air conditioning system includes a heat pump provided to heat or cool a circulating refrigerant, an air heating device provided to burn a fuel so as to heat circulating water so that air is heated by the heated water, and an intermediate heat exchanger provided to exchange heat between the refrigerant and the water.

A burner includes a mixing chamber having therein a space in which fuel and air are mixed to form a mixture, a chamber lower cover that is coupled to the mixing chamber while covering an opening formed in the mixing chamber in a reference direction and has a combustion opening opened in the reference direction, a porous distribution unit that includes a metallic sintered material, through which the mixture passes in the reference direction, and covers the combustion opening, a distribution plate that has a plurality of distribution through-holes, through which the mixture passing through the porous distribution unit passes, and covers the combustion opening on the downstream side of the porous distribution unit in the reference direction, and an ignition unit that covers the combustion opening on the downstream side of the distribution plate to ignite the mixture passing through the distribution plate.

A hot water supply apparatus according to an embodiment of the present disclosure includes a pump that applies a pressure to a direct water supply line connected to a heat exchanger to supply direct water or hot water to the heat exchanger, a flow rate sensor that measures a flow rate of the direct water or the hot water flowing through the direct water supply line, and a controller that maintains an operating state of the pump during a reference time and confirms a change in a flow rate of the direct water supply line through the flow rate sensor when use of the hot water is stopped while the hot water is used in a state in which the pump is in operation.

Provided are a boiler and a method for stage change control of the boiler. The boiler includes a burner to generate a calorie necessary for producing hot water by burning air and gas, and a controller to perform a stage change control operation, when the number of times, in which the stage is changed, is equal to or greater than a reference number of times, for a predetermined time, based on information on occurrence of the change of the stage in the burner, while hot water is used.