Abstract: The present invention relates to a switchable filter comprising: a filter unit in which a first filter group for filtering the frequency of a first frequency band is provided on one surface thereof and a second filter group for filtering the frequency of a second frequency band is provided on the other surface thereof on the basis of a center partition wall; and a frequency band switching unit, which moves to be adjacent to or separated from the one surface or the other surface of the filter unit, and thus converts a frequency band into the first frequency band or the second frequency band. Therefore, the deterioration of RF characteristics is prevented and selective conversion between frequency bands is facilitated.

Abstract: A refrigerator includes a main body having a storage compartment formed therein, and a cooling module forming a machine compartment in which a compressor is disposed and detachably mounted to the main body. The cooling module includes a module body forming the machine compartment, a condenser of an L shape disposed on one side of the compressor and including a first part corresponding to a portion of a rear surface of the machine compartment and a second part corresponding to one side of the machine compartment. The condenser is vertically mounted on a base plate disposed below the module body. A module cover is provided to cover the rear of the machine compartment, and a suction flow path includes first and second suction flow paths.

Abstract: Provided are a synthetic wood and a preparation method thereof. More particularly, provided are a synthetic wood having excellent flexural property and impact strength by including a polyester resin having excellent compatibility with wood flour, and a preparation method thereof.

Abstract: A refrigerant recovery operation method for use in a refrigerator in which a freezing chamber and a refrigerating chamber are independently cooled is disclosed. The refrigerator and the method for controlling the same provide for performing the refrigerant recovery operation not only when the compressor starts operation but also before the compressor stops operation. The refrigerator increases the refrigerant recovery amount within a predetermined pressure range in which the compressor can operate, and controls the refrigerant recovery operation time according to the outdoor air temperature.

Abstract: The present disclosure relates to a refrigerator having a first storage compartment, a second storage compartment, and a third storage compartment. The refrigerator includes a four-way valve including an inlet through which refrigerant is introduced, a plurality of outlets to discharge the refrigerant, and configured to open at least one of the plurality of outlets, a first heat exchanger connected to a first outlet of the plurality of outlets to adjust a temperature of the first storage compartment, a second heat exchanger connected to a second outlet of the plurality of outlets to adjust a temperature of the second storage compartment, and a third heat exchanger connected to the second heat exchanger and a third outlet of the plurality of outlets to receive refrigerant from at least one of the second heat exchanger and the third outlet to adjust a temperature of the third storage compartment.

Abstract: The present invention relates to a multilayer plastic card including at least one polyester resin layer including a polyester resin including a residue of a diol component including 0.1 mol % to 85 mol % of isosorbide and a residue of a dicarboxylic acid component.

Abstract: A polyester resin copolymerized with isosorbide and 1,4-cyclohexane dimethanol and having an improved impact strength, and a method for preparing the same are disclosed. The copolymerized polyester resin has an alternating structure of acid moieties which are derived from acid components and diol moieties which are derived from diol components, wherein the acid components comprise terephthalic acid, and the diol components comprise (i) 5˜99 mol % of 1,4-cyclohexanedimethanol and (ii) 1˜60 mol % of isosorbide with respect to the total diol components.

Abstract: A refrigerant recovery operation method for use in a refrigerator in which a freezing chamber and a refrigerating chamber are independently cooled is disclosed. The refrigerator and the method for controlling the same guarantee a sufficiently long refrigerant recovery operation time by performing the refrigerant recovery operation not only when the compressor starts operation but also before the compressor stops operation, resulting in implementation of the highest operation efficiency of a refrigerating chamber. The refrigerator guarantees high reliability of the compressor by increasing the refrigerant recovery amount within a predetermined pressure range in which the compressor can operate, and maintains an optimum refrigerant amount by variably controlling the refrigerant recovery operation time according to the outdoor air temperature, resulting in improvement of energy efficiency.

Abstract: The present disclosure relates to a refrigerator having a first storage compartment, a second storage compartment, and a third storage compartment. The refrigerator includes a four-way valve including an inlet through which refrigerant is introduced, a plurality of outlets to discharge the refrigerant, and configured to open at least one of the plurality of outlets, a first heat exchanger connected to a first outlet of the plurality of outlets to adjust a temperature of the first storage compartment, a second heat exchanger connected to a second outlet of the plurality of outlets to adjust a temperature of the second storage compartment, and a third heat exchanger connected to the second heat exchanger and a third outlet of the plurality of outlets to receive refrigerant from at least one of the second heat exchanger and the third outlet to adjust a temperature of the third storage compartment.

Abstract: A polyester resin copolymerized with isosorbide and 1,4-cyclohexane dimethanol and having an improved impact strength, and a method for preparing the same are disclosed. The copolymerized polyester resin has an alternating structure of acid moieties which are derived from acid components and diol moieties which are derived from diol components, wherein the acid components comprise terephthalic acid, and the diol components comprise (i) 5˜99 mol % of 1,4-cyclohexanedimethanol and (ii) 1˜60 mol % of isosorbide with respect to the total diol components.

Abstract: Disclosed are a copolymeric polyester resin composition having outstanding color stability (transparency) and a production method therefor. The copolymeric polyester resin composition comprises: between 95 and 99.99 percent by weight of a copolymeric polyester resin having a structure which is obtained by the copolymerization of a dicarboxylic acid component and a diol component that comprises isosorbide, and in which there is repetition of a dicarboxylic acid moiety derived from the dicarboxylic acid component and a diol moiety derived from the diol component; and between 0.01 and 5 percent by weight of an antioxidant selected from the group consisting of hindered phenol-based antioxidants, phosphite-based antioxidants, thioether-based antioxidants and mixtures thereof.

Abstract: A copolymerized polyester heat shrinkable film which can be used as a label, a cap seal or a direct packaging for various containers is disclosed. The copolymerized polyester heat shrinkable film is made of a copolymerized polyester resin having alternating structures of acid moieties which are derived from acid components and diol moieties which are derived from diol components, the acid components comprising terephthalic acid, and the diol components comprising isosorbide 1,4-cyclohexanedimethanol and ethylene glycol. The copolymerized polyester heat shrinkable film has a shrinkage initiation temperature of equal to or more than 60° C., and a maximum heat shrinkage ratio of less than 2% at 60 to 70° C., and a maximum heat shrinkage ratio of 50 to 90% at 90 to 100° C.

Abstract: A copolymerized polyester heat shrinkable film which can be used as a label, a cap seal or a direct packaging for various containers is disclosed. The copolymerized polyester heat shrinkable film is made of a copolymerized polyester resin having alternating structures of acid moieties which are derived from acid components and diol moieties which are derived from diol components, the acid components comprising terephthalic acid, and the diol components comprising isosorbide represented by Formula 1 and ethylene glycol. The copolymerized polyester heat shrinkable film has a shrinkage initiation temperature of equal to or more than 60° C., and a maximum heat shrinkage ratio of less than 2% at 60 to 70° C., and a maximum heat shrinkage ratio of 50 to 90% at 90 to 100° C.

Abstract: A polyester resin copolymerized with isosorbide and 1,4-cyclohexane dimethanol and having an improved impact strength, and a method for preparing the same are disclosed. The copolymerized polyester resin has an alternating structure of acid moieties which are derived from acid components and diol moieties which are derived from diol components, wherein the acid components comprise terephthalic acid, and the diol components comprise (i) 5˜99 mol % of 1,4-cyclohexanedimethanol and (ii) 1˜60 mol % of isosorbide with respect to the total diol components.

Abstract: Disclosed is a refrigerator having an ice making apparatus installed at a cooling chamber door that opens/closes a cooling chamber. The refrigerator includes a body having a cooling chamber therein, a cooling chamber door to open/close the cooling chamber, and an ice making apparatus installed in the cooling chamber door to make ice. An ice making evaporator is provided in the ice making apparatus to independently supply the ice making apparatus with cooling air and an ice making evaporator chamber, in which an ice making evaporator is installed, is provided adjacent to the cooling chamber door while being partitioned from the cooling chamber.

Abstract: Disclosed is a refrigerator having an ice making apparatus installed at a cooling chamber door that opens/closes a cooling chamber. The refrigerator includes a body having a cooling chamber therein, a cooling chamber door to open/close the cooling chamber, and an ice making apparatus installed in the cooling chamber door to make ice. An ice making evaporator is provided in the ice making apparatus to independently supply the ice making apparatus with cooling air and an ice making evaporator chamber, in which an ice making evaporator is installed, is provided adjacent to the cooling chamber door while being partitioned from the cooling chamber.

Abstract: Disclosed is a refrigerator in which a space occupied by an evaporating dish can be minimized, evaporation efficiency of defrost water by convection-heat transfer can be improved, air can be easily exhausted in a machine room, and thus the cooling efficiency of a compressor and a condenser can be improved. The refrigerator includes: a cooling apparatus including a compressor, a condenser, and an evaporator; a blowing fan blowing air to cool at least one of the compressor and the condenser; a blowing guide duct guiding the air blown by the blowing fan to an exterior; and an evaporating dish installed in a lower portion of the blowing guide duct in order to collect and evaporate defrost water, the evaporating dish having an opened upper portion to communicate with a path of the blowing guide duct.

Abstract: Disclosed herein is an icemaker of a refrigerator including an ice dispersing unit to disperse ice for uniform distribution of ice in an ice making container. The icemaker includes an ice making unit to make ice, and an ice making container to receive ice separated from the ice making unit. The icemaker further includes an ice dispersing unit arranged between the ice making unit and the ice making container. The ice dispersing unit serves to guide the ice moving from the ice making unit to the ice making container, to assure uniform distribution of the ice in the ice making container.

Abstract: Disclosed herein is a refrigerator. In a refrigeration cycle including a channel switching valve to selectively supply a refrigerant to a first evaporator side and/or a second evaporator side and hot pipes, a hot pipe on a freezing chamber side and a hot pipe on a refrigerating chamber are disposed upstream and downstream of the channel switching valve, respectively to reduce unbalance in amounts of the refrigerant and in the amounts of generated heat.

Abstract: Disclosed herein is an icemaker of a refrigerator including an ice dispersing unit to disperse ice for uniform distribution of ice in an ice making container. The icemaker includes an ice making unit to make ice, and an ice making container to receive ice separated from the ice making unit. The icemaker further includes an ice dispersing unit arranged between the ice making unit and the ice making container. The ice dispersing unit serves to guide the ice moving from the ice making unit to the ice making container, to assure uniform distribution of the ice in the ice making container.