摘要:
A cold air circulation device and method for a refrigerator, the refrigerator including a refrigerating compartment, a first door for providing access to the refrigerating compartment, a freezing compartment, a second door for providing access to the freezing compartment, and a cold air supply unit for supplying a cold air to the refrigerating and freezing compartments. The air circulation device and method include a first door duct formed within the first door, the first door duct including at least one inlet formed at a lower portion of the first door for receiving a circulated air from the refrigerating compartment, and an outlet formed at an upper portion of the first door for outputting the air from the inlet to the cold air supply unit.
摘要:
A refrigerator includes a fresh food compartment, a freezer compartment defined by inner walls and an outer case respectively, an insulation barrier separating the compartments, and doors for providing access to the compartments. A passageway is formed in the barrier for providing refrigerated air to the fresh food compartment. A connecting duct diverges from the passageway and extends forwardly towards the front portion of the fresh food compartment. A door duct communicating with the connecting duct when the door is closed is coupled to the door. As a result, the fresh food compartment and door-adjacent portions of the fresh food compartment are promptly and uniformly cooled.
摘要:
The present invention relates to a ceramic porous substrate, a reinforced composite electrolyte membrane using the same, and a membrane-electrode assembly having the same. The ceramic porous substrate comprises: a porous polymer base; and void structures formed on the surface of the porous polymer base by linking the space of the inorganic nanoparticles using a polymer binder or a silane-based inorganic binder. The ceramic porous substrate has improved mechanical properties compared to the porous polymer substrate alone, and the void structures thereof can be controlled in various ways.
摘要:
A refrigerator includes at least a compartment defined by inner walls and a door closing the compartment. A providing duct mounted in a inner wall of the compartment and a door duct mounted in the door simultaneously provide refrigerated air to the compartment forward and rearward respectively. A connecting duct was provided along with a shelf or a storage box mounted at the bottom of the compartment to deliver refrigerated air from the providing duct to the door duct.
摘要:
The present invention provides a method for manufacturing a membrane-electrode assembly for a polymer electrolyte fuel cell, in which the glass transition temperature of an electrolyte membrane is reduced using a hydrophilic solvent, and a membrane-electrode assembly for a polymer electrolyte fuel cell, manufactured by the method. In the method of the invention, the glass transition temperature of the electrolyte membrane to which a catalyst is transferred is reduced compared to that in a conventional method for manufacturing a membrane-electrode assembly for a polymer electrolyte fuel cell using the decal process. Thus, even to an electrolyte membrane material having a relatively high glass transition temperature, the catalyst may be transferred at a rate of 100% at a temperature of about 120° C., at which hot pressing is carried out. Thus, the problems associated with electrolyte membrane deterioration occurring in conventional methods can be solved.
摘要:
The present invention provides a method for manufacturing a membrane-electrode assembly for a polymer electrolyte fuel cell, in which the glass transition temperature of an electrolyte membrane is reduced using a hydrophilic solvent, and a membrane-electrode assembly for a polymer electrolyte fuel cell, manufactured by the method. In the method of the invention, the glass transition temperature of the electrolyte membrane to which a catalyst is transferred is reduced compared to that in a conventional method for manufacturing a membrane-electrode assembly for a polymer electrolyte fuel cell using the decal process. Thus, even to an electrolyte membrane material having a relatively high glass transition temperature, the catalyst may be transferred at a rate of 100% at a temperature of about 120° C., at which hot pressing is carried out. Thus, the problems associated with electrolyte membrane deterioration occurring in conventional methods can be solved.
摘要:
The present invention relates to a ceramic porous substrate, a reinforced composite electrolyte membrane using the same, and a membrane-electrode assembly having the same. The ceramic porous substrate comprises: a porous polymer base; and void structures formed on the surface of the porous polymer base by linking the space of the inorganic nanoparticles using a polymer binder or a silane-based inorganic binder. The ceramic porous substrate has improved mechanical properties compared to the porous polymer substrate alone, and the void structures thereof can be controlled in various ways.