Lg Electronics Inc.

Hk Turbine Co., Ltd.

Doowon Technical College

Doowon Electronic Co., Ltd.

Young Il Chang

Yang Hee Cho

Byeong Chul Lee

Dong Won Kim

Jung-Hoon Kim

Jung Hoon Kim

Geon Ho Lee

Ki Tae Kim

Myung Kyun Kim

Yoo Chol Ji

Hak Soo Kim

Yong Sik Hah

Ki Jung An

Yong Ju Lee

Se Heon Choi

Ki-Tae Kim

Dong Ku Shin

The present invention relates to a reactive turbine apparatus that is easy to assemble. To this end, the reactive turbine apparatus includes: a rotation shaft formed of a certain length; a housing defining an inner space so as to be rotatably coupled to the rotation shaft, having an inlet formed through one side thereof through which working fluid can enter, and having an outlet formed through the other side thereof so that working fluid can be discharged to the outside; and at least one rotation unit disposed in the housing and coupled to the rotation shaft, disposed in a lengthwise direction of the rotation shaft, and rotating the rotation shaft by means of the working fluid that enters from the inlet of the housing and is discharged, wherein working fluid is prevented from leaking between the peripheral surface of the at least one rotation unit and the inner surface of the housing during the rotation of the rotation unit.

Reactive turbine apparatus

A reaction-type turbine according to the present invention is configured in that a portion of a rotary shaft module which penetrates through a side with an inlet portion of a housing has a diameter larger than the diameters of other portions. Thus, the pressurized area in which a working fluid applies pressure to a rotary shaft in the direction opposite to the working fluid flow direction increases, thus increasing force in the direction opposite to the working fluid flow direction. As a result, axial direction force applied to the rotary shaft in the working fluid flow direction may be reduced. Therefore, the reaction-type turbine of the present invention has the advantages of eliminating the necessity of installing a separate thrust bearing for supporting axial force in the working fluid flow direction.

Reaction-type turbine

The invention provides a displacement control valve for a variable displacement compressor comprising: a valve housing having a discharge chamber connecting space and a crank chamber connecting space; an electronic solenoid; and a valve body configured to reciprocate within the valve housing the electronic solenoid. The displacement control valve is opened and closed when the valve body moves from the discharge chamber connecting space toward the crank chamber connecting space, making it possible to enlarge a cross-sectional area of the valve body and improving productivity.

Displacement control valve for variable displacement compressor

A drum washing machine having a foldable door includes a cabinet having an opening formed at a front wall of the cabinet, the foldable door provided at the front wall of the cabinet to open or close the opening, and which is separated into frames that fold when the foldable door is opened, and an opening/closing guide mechanism connected between the foldable door and the cabinet to guide the foldable door when the foldable door is being opened or closed.

Drum washing machine having foldable door

Disclosed is a scroll compressor enabling a significant height reduction to use a space of a system efficiently when the scroll compressor is applied to such systems as a refrigerator, an air conditioner, and the like. A compressor housing forms an exterior, a crankcase is fixed inside the compressor housing, a boss is formed at a central portion thereof to protrude downward, and a bearing hole is formed in a center thereof. A stator having a hollow shape is fixed to a lower side of the crankcase, and a rotor is provided to maintain a clearance between an outer circumferential surface of the stator and an inner circumferential surface thereof. A crankshaft is provided to pass through the bearing hole and is fixed to the rotor to revolve together with the rotor, wherein an eccentric pin is formed on an upper side thereof. A orbiting scroll is connected to the eccentric pin, and a fixed scroll fixed to an upper side of the crankcase to form a compression chamber together with the orbiting scroll.

Scroll compressor

Scroll compressor including wraps of involute curves on opposite surfaces of an orbiting scroll and a fixed scroll engaged to each other, to form a compression chamber as the orbiting scroll orbits with respect to the fixed scroll, wherein each of the wraps on opposite surfaces of the orbiting scroll and the fixed scroll is formed from two or more involute curves each having a base circle and a point of starting different from each other, thereby permitting to secure a larger compression space for a same sized scroll compressor while reliability of the scroll compressor is not made poor, to reduce centrifugal force and noise occurring the orbiting scroll, and improving stability of the orbiting scroll.

Scroll compressor having wraps of varying thickness

A scroll compressor is disclosed. In the scroll compressor of this invention, the involute fixed and orbiting scroll wraps engage with each other to form a plurality of variable compression chambers between them. In the compressor, at least one of the involute fixed and orbiting scroll wraps is formed at a middle section thereof to be thicker than the other sections. Therefore, it is possible for the fixed and orbiting scroll wraps to engage with each other without forming a gap at the central portion of the compression part, thus minimizing a leakage of compressed gas refrigerant during a gas refrigerant compressing process of the scroll compressor. The scroll compressor of this invention is thus improved in its gas refrigerant compression efficiency, and is reduced in its operational noises.

Scroll compressor having different wrap thicknesses

Disclosed is an asymmetric scroll compressor. The compressor includes an orbiting scroll possessing a wrap which has an involute curve-shaped configuration, an Oldham ring arranged on a lower surface of the orbiting scroll to prevent the orbiting scroll from being reversely rotated, and a fixed scroll having a wrap which has an involute curve-shaped configuration and is engaged with the wrap of the orbiting scroll such that compression chambers are defined between the wraps of the orbiting and fixed scrolls by rotating motion of the orbiting scroll. The wrap of the fixed scroll further extends within the range of 180&deg; than the wrap of the orbiting scroll in a direction where an involute curve extends. A center of a base circle of the orbiting scroll wrap is positioned within a region which ranges circumferentially between 30&deg; in a direction where the existing orbiting scroll wrap is wound up and 60&deg; in a direction where the existing orbiting scroll wrap is extended, when measured from a straight line connecting a center of a base circle of the existing orbiting scroll wrap with an outer end of the existing orbiting scroll wrap, and radially between 0.1 times and 0.5 times a rotating radius of the orbiting scroll wrap.

Asymmetric scroll compressor

A back pressure structure of a scroll compressor having a fixed scroll forming a plurality of compressive chambers together with an orbiting scroll in its casing; including: a suction pressure space having a predetermined volume formed at one side of the fixed scroll; a suction hole formed for guiding a part of an intermediate gas filled in an intermediate pressure space filled in the rear side of the orbiting scroll to the suction pressure space by passing through the fixed scroll; a vent hole formed at the other side of the suction pressure space for guiding the intermediate pressure gas flown into the suction pressure space through the suction hole to the outermost compressive chamber which has a relatively low pressure; and a back pressure control valve elastically supported by an elastic member in the suction pressure space to open and close the suction hole, and receiving almost the same pressure no matter that it is opened or closed, according to which an intermediate pressure space between a main frame and an orbiting scroll is maintained in a constant intermediate pressure state to thereby prevent an abnormal movement of the orbiting scroll, so that leakage of a compressed gas is prevented, and a position of a suction hole on a fixed scroll is freely selected to be formed, thereby facilitating its fabrication.

Growing community of inventors

Seoul, South Korea

Young Il Chang