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US 5,784,895 AGranted
Refrigerator with an air curtain generator
AssigneeDaewoo Electronics Co., Ltd.
InventorYoung-Houn Choi
Life of this patent
Estimating the term…
Abstract
A refrigerator provided with an air curtain generator in a refrigerating room is disclosed. A supply duct for an air curtain is installed at the uppermost portion of the refrigerating room. A crossflow fan is provided within the supply duct, and a supply port is formed at a terminal end of the supply duct adjacent to a door for the refrigerating room. The supply port is slit-shaped and extends along a width direction of the refrigerating room. At least one step is provided on a lower surface of the inside of the supply duct. The supply duct is communicated with a suction duct constituting a cooling system of the refrigerator. When the door is opened, the air curtain is formed over the open side of the refrigerating room to block the invasion of the surrounding air.
Claims24
A refrigerator comprising:
- a freezing room;
- a refrigerating room;
- producing means for producing cool air;
- circulating means for circulating the cool air in said freezing room and said refrigerating room, including a feeding duct provided with at least one feeding port, a suction duct provided with at least one suction port and a fan member;
- and
- generating means for generating an air curtain in said refrigerating room,
- said generating means comprising:
- a supply duct for the air curtain, including a supply port installed adjacent to a door of said refrigerating room to downwardly inject air flows for the air curtain therethrough, being installed at an uppermost portion within said refrigerating room to extend from a rear portion of said refrigerating room to a front portion thereof, and being communicated with said suction duct;
- and
- a crossflow fan for the air curtain, installed within said supply duct to generate the air flows and being operated to be driven at the time of opening of said door and stop at the time of closing of said door,
- wherein said injected air flows for the air curtain are sucked through said suction port and said suction duct.
8 more elements
A refrigerator comprising:
- a freezing room;
- a refrigerating room;
- producing means for producing cool air;
- circulating means for circulating the cool air in said freezing room and said refrigerating room, including a feeding duct provided with at least one feeding port, a suction duct provided with at least one suction port which is formed at a rear side of said refrigerating room and a fan member;
- and
- generating means for generating an air curtain in said refrigerating room,
- said generating means comprising:
- a supply duct for the air curtain, including a supply port installed adjacent to a door of said refrigerating room to downwardly inject air flows for the air curtain therethrough, being installed at an uppermost portion within said refrigerating room to extend from a rear portion of said refrigerating room to a front portion thereof, and being communicated with said suction duct, said supply port being of a slit shape extending along a width direction of said refrigerating room;
- and
- a fan member for the air curtain, installed within said supply duct to generate the air flows and being operated to be driven at the time of opening of said door and stop at the time of closing of said door,
- wherein at least one shelf is installed in said refrigerating room, and the sectional area of said suction port allotted for the respective accommodating spaces which are divided by said shelf is determined so that the sectional area of said suction port allotted for a lower accommodating space is broader than that of said suction port allotted for an upper accommodating space;
- and
- wherein said injected air flows for the air curtain are sucked through said suction port and said suction duct.
10 more elements
A refrigerator comprising:
- a freezing room;
- a refrigerating room;
- producing means for producing cool air;
- circulating means for circulating the cool air in said freezing room and said refrigerating room, including a feeding duct provided with at least one feeding port, a suction duct provided with at least one suction port which is formed at a rear side of said refrigerating room and a fan member;
- and
- generating means for generating an air curtain in said refrigerating room,
- said generating means comprising:
- a supply duct for the air curtain, including a supply port installed adjacent to a door of said refrigerating room to downwardly inject air flows for the air curtain therethrough, being installed at an uppermost portion within said refrigerating room to extend from a rear portion of said refrigerating room to a front portion thereof, and being communicated with said suction duct, said supply port being of a slit shape extending along a width direction of said refrigerating room;
- and
- a fan member for the air curtain, installed within said supply duct to generate the air flows and being operated to be driven at the time of opening of said door and stop at the time of closing of said door,
- wherein at least one shelf is installed in said refrigerating room, and the sectional area of said suction port allotted for the respective accommodating spaces which are divided by said shelf is determined so that the sectional area of said suction port allotted for a lower accommodating space is broader than that of said suction port allotted for an upper accommodating space;
- wherein said injected air flows for the air curtain are sucked through said suction port and said suction duct;
- wherein said fan member for the air curtain is a crossflow fan, and said crossflow fan has a length substantially equal to the inner width of said refrigerating room;
- wherein said fan member for the air curtain is installed adjacent to the rear portion of said refrigerating room;
- wherein the sectional area of said supply duct is gradually decreased toward said supply port from a portion of said supply duct receiving said fan member for the air curtain therein;
- wherein said supply duct consists of a fan receiving portion for receiving said fan member for the air curtain, a horizontal portion extending adjacent to a front side of said refrigerating room from said fan receiving portion, a curved portion being curved downwardly to have a predetermined curvature and extending from said horizontal portion, and a straight portion extending from said curved portion to ensure the straightness of the air curtain, a terminal end of said straight portion forming said supply port;
- wherein said horizontal portion of said supply duct includes an upper horizontal flat portion and a lower inclined flat portion;
- wherein said lower inclined flat portion is provided with at least one step thereon;
- wherein said straight portion of said supply duct is formed to lean to the outside of said refrigerator by 5.degree. to 20.degree. with respect to a vertical line;
- wherein a terminal end, adjacent to said door, of the lowest shelf installed within said refrigerating room is located to be projected from the installing position of said supply port toward said door, while terminal ends, adjacent to said door, of the other shelves are located to be retracted from the installing position into said refrigerating room;
- and
- wherein said suction duct extends vertically along a center portion of the rear side of said refrigerator and is directly communicated with said refrigerating room through said suction port.
19 more elements
Dependencies are inferred from the claim text.