A modular refrigerator including a main cabinet, and a sub-cabinet selectively coupleable to a right side, an upper side, and a left side, of the main cabinet. The main cabinet includes a cooling unit, a first connection duct for cold air generated by the cooling unit to flow toward the right side, a second connection duct for the cold air to flow toward the upper side, and a third connection duct for the cold air to flow toward the left side. The sub-cabinet includes a first branch duct that, when the sub-cabinet is coupled to the right side, communicates with the first connection duct, a second branch duct that, when the sub-cabinet is coupled to the upper side, communicates with the second connection duct, and a third branch duct that, when the sub-cabinet is coupled to the left side, communicates with third connection duct.

A muffler comprises a housing enclosed to form a hollow cavity, the cavity comprises a cylindrical chamber and a rectangular parallelepiped chamber, wherein one of bottom surfaces of the cylindrical chamber is connected with a first surface of the rectangular parallelepiped chamber, the cylindrical chamber communicates with an interior of the rectangular parallelepiped chamber, and the cylindrical chamber is provided with an air inlet and an air outlet.

The present invention provides a refrigerator, comprising a storage compartment and a mixed air passage. Both ends of the mixed air passage have air inlets, the middle portion of the mixed air passage comprises a mixed air outlet communicating with the storage compartment, and the mixed air passage is configured to receive air flows from the two air inlets such that two air flows enter the storage compartment in a mixed manner via the mixed air outlet. The refrigerator of this invention comprises a mixed air passage, so that the air in an area of the storage compartment with a relatively high temperature can enter the mixed air passage earlier than external air or the air in the storage compartment with a relatively low temperature. Then, the two air flows are blown to the storage compartment in a mixed manner, realizing even temperature distribution in the storage compartment.

A refrigerator includes a cabinet including a refrigerating compartment and an evaporation chamber, a first door, a housing in the first door, an ice making room defining a cool air inflow hole and a cool air discharge hole, a chiller room defining a cool air discharge hole, a second door connected to the first door, a partition wall defining the ice making room, the chiller room, and a communication hole, a damper opening and closing the communication hole, a cool air supply duct connecting an outlet of the evaporation chamber and the cool air inflow hole to supply cool air of the evaporation chamber to the ice making room, and a cool air return duct having a first inlet connected to the cool air discharge hole of the ice making chamber and a second inlet connected to the cool air discharge hole of the chiller room.

A refrigerator includes: a storage compartment; an evaporator configured to generate cold air through heat exchange; a duct comprising a channel formed therein and through which the generated cold air flows and a cold air outlet through which the cold air is discharged to the storage compartment; a fan configured to supply the generated cold air to the storage compartment through the channel; and a cold-air control unit provided in the channel and to control a discharging amount of cold air discharged through the cold air outlet. The cold-air control unit includes a damper movable according to strength of the generated cold air supplied by the fan to adjust the cold air outlet.

Provided is a refrigerator. The refrigerator includes a cabinet including an inner case defining a storage compartment, an outer case surrounding the outside of the inner case, and an insulation material provided between the inner case and the outer case, a storage compartment door opening and closing the storage compartment, a cold air duct provided in the storage compartment and disposed in an upper side of the storage compartment to discharge cold air to the storage compartment, and a guide duct disposed outside the inner case to communicate with the cold air duct and extending to the storage compartment door to guide the cold air received from the cold air duct to the storage compartment door.

A refrigeration system including a storage chamber configured to store a product at a predetermined temperature. The storage chamber is defined by an inner wall. The inner wall at least partially defines an air plenum. The inner wall includes an opening wall surface, a floor surface, a rear wall surface and a ceiling wall surface. The system also includes a refrigerant circuit including a compressor, a condenser, a condenser fan, an evaporator and an evaporator fan arranged and disposed in an operable configuration to provide refrigeration to the storage chamber. The air plenum includes a conduit arranged and disposed to convey air from an air inlet across the evaporator and into a discharge chamber and out an air outlet. The air outlet is configured to discharge cooled air in a direction toward the opening wall surface.

A control method for a refrigerator includes sensing a temperature of a storage room; operating a cool air supply at a cooling power when the sensed temperature of the storage room is equal to or above a first reference temperature; operating the cool air supply at a delay power, which is less than the cooling power, when the sensed temperature of the storage room is equal to or below a second reference temperature, which is less than the first reference temperature while the cool air supply is operating at the cooling power; and adjusting the cooling power or the delay power of the cool air supply according to the temperature of the storage room while the cool air supply is operating at the delay power, and operating the cool air supply at the determined adjusted cooling power or delay power.

There is disclosed a controlling method for a refrigerator comprising: a first defrosting step of performing defrosting for an evaporator, the first defrosting step which ends when the temperature of the evaporator reaches a first temperature; a pressure difference sensing step of measuring a difference between the pressure in a first through-hole arranged between an inlet hole for drawing air from a storage compartment and the evaporator and the pressure in a second through-hole arranged between an outlet hole for discharging air towards the storage compartment and the evaporator by using one differential pressure sensor; and a second defrosting step of performing additional defrosting for the evaporator when the measured pressure difference is a preset pressure or more.

Provided is a vacuum adiabatic body. To reduce a heat transfer amount between two plates, the vacuum adiabatic body includes: a conductive resistance sheet connecting plate members to each other, an exhaust port through which a gas of a third space is exhausted, and a sealing frame covering a conductive resistance sheet. A virtual line connecting both end portions of the conductive resistance sheet to each other is installed to be obliquely inclined when at least one extension direction of a first plate member or a second plate member is viewed in a horizontal direction.