Abstract: A centrifugal fan, in which an expansion angle of a radius of curvature of the outer periphery of a scroll housing from a position angle of a cutoff portion, serving as a suction portion, to a designated portion from the former in the direction of air flow is gradually decreased; and an expansion angle of the radius of curvature of the outer periphery of the scroll housing from the above designated portion to a discharge portion is gradually increased, thereby easily converting the velocity of the discharged fluid to pressure due to the increased dimensions of the discharge region and increasing the flow rate. Further, since noise generated from a cutoff portion of the centrifugal fan of the present invention maintains the same level as that of the conventional centrifugal fan, the centrifugal fan of the present invention has reduced noise at the same flow rate.

Abstract: A heating unit includes a heater that generates radiant heat, and a reflector that reflects radiant heat generated by the heater toward an object. The reflector includes a side portion shaped as an involute, a central elevated portion of a predetermined height, and a connecting portion that connects the side portion to the elevated portion. A supporter supports the heater in a position spaced from the reflector by a predetermined distance.

Abstract: A cooker is disclosed, the cooker comprising: a case having an air inlet and an air outlet; a cooking plate provided on the case; a heating unit formed between the case for heating the cooking plate and the cooking plate; and a cooling unit for cooling the cooking plate by introducing outside air into the air inlet, letting it circulated around the cooking plate, and discharged via the air outlet, such that the cooling time of the cooking plate can be shortened.

Abstract: An over-the-range (OTR) microwave oven includes a main body installed above a cooking source of a gas range and has therein a cavity and an electric equipment chamber in which a magnetron is located. An air exhaust path is installed inside the main body and provides a path through which air generated from the cooking source which is introduced through a suction port formed at the bottom of the main body by a suction force of a blower installed at the main body is exhausted to the outside of the main body.

Abstract: The present invention relates to an over-the-range. The over-the-range including: a cavity having an electronic equipment chamber at one side, and within which cooking is performed; a door for opening and closing a cooking chamber within the cavity; a front grill part disposed at the upper side of the cavity and the upper side of the door, for air circulation; and a guide grill part combined to the front grill part such that the guide grill part can be transferred in the front and rear directions in a drawer type to suck and exhaust polluted air at a periphery of the cavity.

Abstract: A combined microwave oven and hood is provided. The combined microwave oven and hood includes a cavity assembly including a cavity and an electronic equipment room disposed at one side of the cavity, a blower for generating an absorptive power of contaminated air, a filter for filtering the contaminated air absorbed through the blower, and a drawer type air curtain module, which is transferred to a front side of the cavity assembly as operated.

Abstract: Disclosed is a combination hood microwave oven, by which a room environment is maintained more pleasant and fresh by proving a microwave oven with an air curtain generating unit for preventing polluted air, which includes hot, smelling, or humid air produced from an oven range on cooking, from diffusing into a room. The present invention includes a cabinet disposed over an oven range, a cooking room having a predetermined cavity within the cabinet for cooking using an electromagnetic wave generated from a magnetron, a hood unit installed within the cabinet to discharge polluted air produced from the oven range on cooking, and an air curtain generating unit installed at a bottom side of the cabinet to prevent the polluted air from diffusing into a room.

Abstract: A centrifugal fan includes: a housing installed at both sides of a driving motor and having an air suction opening and an air discharge opening; an impeller installed inside the housing and discharging air sucked through the air suction opening through the air discharge opening while being rotated by the driving motor; a motor bracket coupled to one side of the housing and connecting the housing the driving motor; and a noise reducing unit for minimizing a noise of air discharged to the air discharge opening.

Abstract: A fan guide including a guide body, a central frame positioned at a central portion of the guide body and having an outer circumferential region, a plurality of motor fixtures formed at the outer circumferential region of the central frame for fixing a motor coupled with a fan, and at least three straight connecting frames for connecting the guide body and the central frame to each other, wherein one of intersection points among imaginary lines extending the three straight connecting frames is inside the outer circumferential region and the other intersection points among imaginary lines extending the three straight connecting frames are outside the outer circumferential region. By this arrangement, it is possible to decrease the degree of noise resulting from a blade passing frequency while destroying the regularity of a vortex shedding formed at each frame to reduce the interaction between a vortex flow and fan blades, thereby achieving a reduction in noise and flow loss.

Abstract: In a drum for a clothes drier having a plurality of baffles projected from the inner circumference of the drum, lifting and moving clothes, a drum for a clothes drier comprises a cylindrical body housing clothes and rotating and a plurality of baffles projected from the inner circumference of the cylindrical body in a length direction of the cylindrical body and lifting the clothes, wherein at least one baffle is installed at each disposal domain and is formed so as to be inclined with respect to the length direction of the cylindrical body when the inner circumference of the cylindrical body is divided into a plurality of disposal domains in the length direction of the cylindrical body. Accordingly, because the clothes housed in the drum can be regularly dispersed, contact of the clothes and heating air can be performed well, accordingly clothes drying efficiency can be improved.

Abstract: A centrifugal fan includes: a housing installed at both sides of a driving motor and having an air suction opening and an air discharge opening; an impeller installed inside the housing and discharging air sucked through the air suction opening through the air discharge opening while being rotated by the driving motor; a motor bracket coupled to one side of the housing and connecting the housing the driving motor; and a noise reducing unit for minimizing a noise of air discharged to the air discharge opening.

Abstract: A clothes dryer, for drying washed clothes, including a drum supported in a case rotatably, for drying clothes inserted to the inside of the case, a driving means installed in the case, for rotating the drum, a suction duct connected to a side of the drum, for supplying heated air to the inside of the drum, an exhaust duct connected to the other side of the drum, for exhausting air which dried the clothes in the drum, a first blowing means installed in the suction duct or the exhaust duct, for flowing air to the inside of the drum and exhausting the air at the same time and a suction increasing means installed in the case, for blowing air into an inlet of the suction duct can improve clothes drying performance and reduce time for drying clothes by increasing the amount of air supplied into the drum.

Abstract: A clothes dryer in accordance with the present invention includes a drum rotatably supported in a case having an interior space for drying clothes. Air for drying clothes is supplied to the suction duct that is connected to one side of the drum. An extension duct extending from the suction duct into the drum supplies the air from the suction duct into the drum. An exhaust duct is connected to the other side of the drum for exhausting the air that is used to dry clothes to the outside of the case. The clothes dryer uniformly dries clothes inputted into the drum as the dryer directly transmits heated air to the center portion of the drum, thereby improving clothes drying efficiency.

Abstract: A fan guide including a guide body, a central frame positioned at a central portion of the guide body and having an outer circumferential region, a plurality of motor fixtures formed at the outer circumferential region of the central frame for fixing a motor coupled with a fan, and at least three straight connecting frames for connecting the guide body and the central frame to each other, wherein one of intersection points among imaginary lines extending the three straight connecting frames is inside the outer circumferential region and the other intersection points among imaginary lines extending the three straight connecting frames are outside the outer circumferential region. By this arrangement, it is possible to decrease the degree of noise resulting from a blade passing frequency while destroying the regularity of a vortex shedding formed at each frame to reduce the interaction between a vortex flow and fan blades, thereby achieving a reduction in noise and flow loss.

Abstract: A laundry dryer has a drum rotatively installed inside a case, a heater heating air flowing inside the drum, a rear plate coupled so as to cover a rear portion of the drum and having a vertically elongated inlet hole traversing upper and lower areas of the drum body, a central portion of the vertically elongated inlet hole crossing a horizontal line of the rear plate, and an inlet duct covering the inlet hole and simultaneously having a plurality of duct holes formed at a portion covering the inlet hole so as to guide air heated by the heater to flow inside the drum. The present invention enables the common use of the rear plate for both electrical and gas laundry dryers, and thus allows the use of a common line for assembly. Therefore, the present invention reduces product costs and increases productivity.

Abstract: Disclosed is a laundry dryer, comprising a drum rotatively installed inside a case, a heater heating an air flowing inside the drum, a rear plate coupled so as to cover a rear portion of the drum and having an inlet hole open long from upper to lower sides across upper and lower areas centering around a horizontal line of the rear plate, and an inlet duct covering the inlet hole and simultaneously having a plurality of duct holes formed at a portion covering the inlet hole so as to guide an the air heated by the heater to flow inside the drum. The present invention enables the common use of the rear plate for the electrical and gas type laundry dryers so as to assemble the rear plate using the same assembly line. Therefore, the present invention enables to reduce a product cost as well as improve the productivity.

Abstract: A clothes dryer in accordance with the present invention, including a drum supported in the case rotatably, having a space for drying clothes inside, a suction duct connected to one side of the drum, to which air for drying clothes is supplied, an extension duct lengthened from the suction duct into the drum, for flowing the air supplied from the suction duct into the drum and an exhaust duct connected to the other side of the drum, for exhausting air which dried clothes to the outside of the case can dry clothes inputted into the drum uniformly by composing the dryer capable of directly transmitting heated air to the center portion of the drum, thus to improve clothes drying efficiency.

Abstract: A clothes dryer, for drying washed clothes, including a drum supported in a case rotatably, for drying clothes inserted to the inside of the case, a driving means installed in the case, for rotating the drum, a suction duct connected to a side of the drum, for supplying heated air to the inside of the drum, an exhaust duct connected to the other side of the drum, for exhausting air which dried the clothes in the drum, a first blowing means installed in the suction duct or the exhaust duct, for flowing air to the inside of the drum and exhausting the air at the same time and a suction increasing means installed in the case, for blowing air into an inlet of the suction duct can improve clothes drying performance and reduce time for drying clothes by increasing the amount of air supplied into the drum.

Abstract: In a drum for a clothes drier having a plurality of baffles projected from the inner circumference of the drum, lifting and moving clothes, a drum for a clothes drier comprises a cylindrical body housing clothes and rotating and a plurality of baffles projected from the inner circumference of the cylindrical body in a length direction of the cylindrical body and lifting the clothes, wherein at least one baffle is installed at each disposal domain and is formed so as to be inclined with respect to the length direction of the cylindrical body when the inner circumference of the cylindrical body is divided into a plurality of disposal domains in the length direction of the cylindrical body. Accordingly, because the clothes housed in the drum can be regularly dispersed, contact of the clothes and heating air can be performed well, accordingly clothes drying efficiency can be improved.

Abstract: A blower is disclosed. The blower comprises an impeller and a scroll housing. The impeller is provided with a plurality of blades and rotated. The scroll housing guides and discharges air sucked by the impeller to the outside, and surrounds the impeller. The expansion angle of the curvature radius of the contour of the scroll housing is designed to be less than an expansion angle in conformity with an Archimedic curve in a suction region ranging from a cutoff start angle to 160-200° from a reference angle. Additionally, the expansion angle of the curvature radius of the contour of the scroll housing is designed to be greater than the expansion angle in conformity with the Archimedean curve in a discharge region ranging exceeding 160-200°.