Abstract: In the case of a gas in which several gases are mixed, a type and concentration of the gas may be incorrectly measured when measured using only an optical band-pass filter. The invention of the present application is directed to providing a technology in which a plurality of broadband band-pass filters having overlapping regions are provided to calculate a magnitude of absorption for each wavelength band for light passing through each broadband band-pass filter, thereby identifying the presence of a gas of interest and the presence of a gas other than the gas of interest.

Abstract: Provided is a core drill having one touch lock function of a core bit, and particularly, new-conceptional technology of maintaining locking automatically during assembling a core bit and a decelerating unit, and releasing the locking easily, and the core drill conventionally disclosed had problems that movement and separation of the core bit and the decelerating unit of the core drill often occur during operation, because there is no specific lock function in the state that the core bit and the decelerating unit are assembled, and in this disclosure of the present invention to solve the problems, there is provided new technology for automatically maintaining locking if releasing the locking after inserting a decelerating connector coupled to a core bit into a connection hole formed in a spindle in the state of releasing the locking by pressing the lock pin elastically installed in a lock housing fittingly installed outside the spindle.

Abstract: A refrigerator includes a cabinet having a first storage compartment and a second storage compartment, and a cooling module removably mounted to the cabinet. The cooling module includes an evaporator, a condenser, and a compressor. A first cold air duct extends from the first storage compartment and is configured to allow a portion of the cooling module in which the evaporator is arranged, to communicate with the first storage compartment when the cooling module is coupled to the cabinet, and a second cold air duct is different from the first cold air duct and extends from the second storage compartment. The second cold air duct is configured to allow the portion of the cooling module in which the evaporator is arranged, to communicate with the second storage compartment.

Abstract: A refrigerator includes a main body including an inner case and an outer case, a storage compartment defined by the inner case, a door configured to open and close the storage compartment, an ice making chamber disposed on a rear surface of the door, a fan configured to supply cold air to the storage compartment and the ice making chamber, and a guide passage formed by being recessed into the inner case to guide cold air supplied by the fan to the ice making chamber. The inner case includes an upper wall, and the guide passage is formed by being recessed into the upper wall of the inner case to be exposed to the storage compartment.

Abstract: A refrigerator including a cabinet in which a storeroom is formed and including a duct opening; a cooling module detachably coupled to the cabinet and including an evaporator, a condenser, a compressor, a module body having a space in which the evaporator is accommodated, and a duct module detachably coupled to the module body to guide cold air produced from the evaporator to the storeroom, wherein the duct opening, the duct module and the storeroom are arranged so that, when the duct module is detached from the module body, the duct module is passable through the duct opening to be removed through the storeroom.

Abstract: Provided is a core drill having one touch lock function of a core bit, and particularly, new-conceptional technology of maintaining locking automatically during assembling a core bit and a decelerating unit, and releasing the locking easily, and the core drill conventionally disclosed had problems that movement and separation of the core bit and the decelerating unit of the core drill often occur during operation, because there is no specific lock function in the state that the core bit and the decelerating unit are assembled, and in this disclosure of the present invention to solve the problems, there is provided new technology for automatically maintaining locking if releasing the locking after inserting a decelerating connector coupled to a core bit into a connection hole formed in a spindle in the state of releasing the locking by pressing the lock pin elastically installed in a lock housing fittingly installed outside the spindle.

Abstract: An air conditioner includes a heat exchanger for exchanging heat with air introduced to an inside of a housing and a fan for blowing the air having heat exchanged by the heat exchanger to an outside of the housing, the air conditioner capable of blowing air at various airflows by controlling a door configured to selectively open a first portion and a second portion, different from the first portion, of an air outlet of the housing and controlling a guide member configured to controlling a flow path inside the housing.

Abstract: The present disclosure relates to a refrigerator having an improved structure to improve ice making performance.

Abstract: Provided herein are a fan assembly having improved cooling and heating performance and an air conditioner having the same. The fan assembly provided in an air conditioner includes a plurality of rotating fans provided to be rotatable about the same rotating shaft and at least one fixed fan fixed between adjacent two rotating fans of the plurality of rotating fans.

Abstract: A refrigerator including a cabinet in which a storeroom is formed and including a duct opening; a cooling module detachably coupled to the cabinet and including an evaporator, a condenser, a compressor, a module body having a space in which the evaporator is accommodated, and a duct module detachably coupled to the module body to guide cold air produced from the evaporator to the storeroom, wherein the duct opening, the duct module and the storeroom are arranged so that, when the duct module is detached from the module body, the duct module is passable through the duct opening to be removed through the storeroom.

Abstract: A refrigerator includes a cabinet having a first storage compartment and a second storage compartment, and a cooling module removably mounted to the cabinet. The cooling module includes an evaporator, a condenser, and a compressor. A first cold air duct extends from the first storage compartment and is configured to allow a portion of the cooling module in which the evaporator is arranged, to communicate with the first storage compartment when the cooling module is coupled to the cabinet, and a second cold air duct is different from the first cold air duct and extends from the second storage compartment. The second cold air duct is configured to allow the portion of the cooling module in which the evaporator is arranged, to communicate with the second storage compartment.

Abstract: An air conditioner includes a heat exchanger for exchanging heat with air introduced to an inside of a housing and a fan for blowing the air having heat exchanged by the heat exchanger to an outside of the housing, the air conditioner capable of blowing air at various airflows by controlling a door configured to selectively open a first portion and a second portion, different from the first portion, of an air outlet of the housing and controlling a guide member configured to controlling a flow path inside the housing.

Abstract: Provided herein are a fan assembly having improved cooling and heating performance and an air conditioner having the same. The fan assembly provided in an air conditioner includes a plurality of rotating fans provided to be rotatable about the same rotating shaft and at least one fixed fan fixed between adjacent two rotating fans of the plurality of rotating fans.

Abstract: The present invention relates to a one-touch chamfering-amount adjustment device for a chamfering machine which specifically carries out a chamfering process on the welding bead surfaces of objects to be processed (such as metal sheet materials and pipes).

Abstract: The present invention relates to a chamfer device for machining a weld bead surface, which specifically carries out a chamfering process on the welding bead surfaces of objects to be processed (such as metal sheet materials and pipes). In the present invention, immediately after a chamfering-amount-adjustment unit has been rotated and released, a position-setting pin is inserted into a securing recess in the chamfering-amount-adjustment unit, while the chamfering amount is adjusted in precise units and simultaneously locked at a predetermined chamfering amount which is automatically maintained, and the adjustment of the chamfering amount is achieved in a straightforward fashion with just one touch. When the chamfering-amount-adjustment unit is operated, a mobile cutter shaft moves vertically and as it does so the chamfering amount is adjusted in such a way that the chamfering amount can be immediately and rapidly adjusted while continuously operating without regard to any cutter rotation action.

Abstract: The present invention relates to a chamfer device for machining a weld bead surface, which specifically carries out a chamfering process on the welding bead surfaces of objects to be processed (such as metal sheet materials and pipes). In the present invention, immediately after a chamfering-amount-adjustment unit has been rotated and released, a position-setting pin is inserted into a securing recess in the chamfering-amount-adjustment unit, while the chamfering amount is adjusted in precise units and simultaneously locked at a predetermined chamfering amount which is automatically maintained, and the adjustment of the chamfering amount is achieved in a straightforward fashion with just one touch. When the chamfering-amount-adjustment unit is operated, a mobile cutter shaft moves vertically and as it does so the chamfering amount is adjusted in such a way that the chamfering amount can be immediately and rapidly adjusted while continuously operating without regard to any cutter rotation action.

Abstract: The present invention relates to a one-touch chamfering-amount adjustment device for a chamfering machine which specifically carries out a chamfering process on the welding bead surfaces of objects to be processed (such as metal sheet materials and pipes).