Lg Electronics Inc.

Cheolhwan Kim

Kangwook Lee

Byeongchul Lee

Yongkyu Choi

Taekyoung Kim

Howon Lee

Sangbaek Park

Jungsun Choi

Nayoung Jeon

Seungmock Lee

Sanghun Seong

Inho Won

Kyungho Lee

Yoonsung Choi

Jonghun Ha

Samchul Ha

Taemin Earmme

Wonyeong Jung

Deokhyun Youn

Hojong Jeong

Seheon Choi

Jinho Kim

Hansaem Park

Sungyong Ahn

Jeongyon Kim

Soojin Kang

Sedong Lee

Byoungchan Kim

Namkyu Cho

A scroll compressor including a casing forming the exterior; a driving unit installed in the casing and generates a drive power; a rotary shaft installed in the driving unit to be rotatable; a compression portion including an orbiting scroll installed on the rotary shaft to be capable of orbiting, and a fixed scroll which is coupled to be engaged with the orbiting scroll so as to form a compression chamber between the orbiting scroll and the fixed scroll; and a check valve including a valve portion which is arranged so that one side thereof faces the compression chamber and guides suction of a refrigerant when being opened and is closed when the driving of the compressor is stopped so as to prevent the refrigerant from flowing backward, and a valve fixing portion which is installed on the side surface provided in the suction port of the fixed scroll.

Scroll compressor

A scroll compressor, including a casing that forms an outer appearance thereof and having an oil storage space; an electromotive part installed inside of the casing to generate a drive force; a rotational shaft rotatably installed in the electromotive part; a compression part having an orbiting scroll installed to be capable of orbital rotation around the rotational shaft and a fixed scroll coupled to and engaged with the orbiting scroll to form a compression chamber between the orbiting scroll and the fixed scroll; and a bushing disposed between the fixed scroll and the rotational shaft and coupled to an outer circumference of the rotational shaft so as to rotate with the rotational shaft. The bushing is supported by one surface provided inside of the fixed scroll.

A scroll compressor may include an oil supply passage provided independent of an intermediate pressure chamber to allow an oil passage of a rotational shaft to communicate with a compression chamber, such that some of the oil suctioned through the oil passage is guided to the compression chamber. As an inner space of a casing communicates directly with the compression chamber without passing through the intermediate pressure chamber, even in a state in which an operating pressure ratio is, for example, 1.3 or less, namely, even if a differential pressure between the inner space and the compression chamber is not large, oil stored in the inner space may be smoothly supplied to the compression chamber.

The present invention relates to a compressor wherein, when oil is supplied to a single module, the module can mechanically/structurally supply the oil to a plurality of regions in a selective manner according to the pressure of a refrigerant, etc.

Compressor

The present invention relates to a compressor comprising: a muffler that provides a sealed space for guiding a refrigerant; and a resonator provided in the muffler and forming cavities separate from the sealed space to decrease vibration and noise caused by the refrigerant.

A scroll compressor is disclosed, which comprises an auxiliary discharge path capable of sufficiently making sure of a discharge area at an initial discharge stage. The compressor comprises a fixed scroll including a fixed end plate portion and a fixed wrap, and an orbiting scroll including an orbiting end plate portion and an orbiting wrap, wherein a discharge hole is formed in the fixed end plate portion, and an auxiliary discharge path for connecting a side of the orbiting wrap with a bottom surface of the orbiting wrap is provided to be communicated with the discharge hole, whereby a compressed refrigerant may be discharged through the auxiliary discharge path.

Scroll compressor having enhanced discharge structure

Provided is a scroll compressor. The scroll compressor may be provided with at least one refrigerant accommodating groove recessed to a preset depth in at least one from a side surface of a fixed wrap constituting a compression chamber and a side surface of an orbiting wrap. Thus, a volume of the compression chamber in a discharge area may be increased in correspondence with a volume of the at least one refrigerant accommodating groove, and a space into which liquid refrigerant, etc. may escape may be ensured to resolve excessive compression in the compression chamber. Then, a stress exerted on the fixed wrap is reduced, and a damage to the fixed wrap due to pressure in the compression chamber may be suppressed.

A scroll compressor includes a flow path guide disposed between a motor unit and a compression unit to separate a refrigerant flow path and an oil flow path. A guide discharge hole communicating with a discharge passage of the compression unit is formed axially through the flow path guide and a guide passage communicating with the guide discharge hole is annularly defined, such that a discharge guide protrusion surrounding the guide discharge hole extends toward the motor unit. Accordingly, inner and outer spaces of the flow path guide can communicate with each other while the refrigerant flow path and the oil flow path are separated, which results in securing a space of an oil recovery passage to allow quick oil recovery and simplifying a structure of the flow path guide to reduce manufacturing costs.

Scroll compressor and air conditioner having same

The present disclosure relates to is a compressor. The compressor may be provided with a communication hole between an inlet and an outlet of a refrigerant discharge pipe coupled through an upper surface of a casing, the communication hole penetrating between an outer circumferential surface and an inner circumferential surface of the refrigerant discharge pipe. Thus, during oil sealing through the refrigerant discharge pipe, a flux path area of a driving motor may be ensured, and a number of winding wires and/or a coil diameter of a stator coil may be ensured. Thus, efficiency of the driving motor may be maintained and backflow or overflow of oil through the refrigerant discharge pipe may be suppressed. In addition, during operation of the compressor, oil may be suppressed from being excessively leaked through the refrigerant discharge pipe without having to include a separate oil separator inside or inside the casing.

A scroll compressor is provided that may include an orbiting scroll having an orbiting wrap, and which performs an orbiting motion; and a fixed scroll having a fixed wrap to form a compression chamber including a suction chamber, an intermediate pressure chamber, and a discharge chamber, by being engaged with the orbiting wrap. In a state in which the orbiting scroll and the fixed scroll are concentric with each other, when a distance between the orbiting wrap and the fixed wrap is defined as an orbiting radius, there exists an offset section having an interval larger than the orbiting radius, between a side surface of the orbiting wrap and a side surface of the fixed wrap which faces the orbiting wrap. With such a configuration, even if the fixed scroll or the orbiting scroll is transformed due to thermal expansion, interference between the fixed wrap and the orbiting wrap at a portion having a large transformation amount may be prevented. This may prevent a frictional loss or abrasion between the fixed wrap and the orbiting wrap. Further, this may restrict or minimize a gap between the fixed wrap and the orbiting wrap at an opposite side to the suction chamber, resulting in enhanced compression efficiency.

Provided is a scroll compressor. The scroll compressor includes a reinforcing unit between an outlet end of a suction port and an outer circumferential surface of the fixed wrap facing the outlet end of the suction port. The reinforcing unit may overlap a part of the outlet end of the suction port in a radial direction when being projected in an axial direction. Accordingly, rigidity of a suction side of the fixed wrap is increased, and thus, deformation of the suction side of the fixed wrap during operation of the scroll compressor may be suppressed to increase reliability of the scroll compressor.

A scroll compressor includes a discharge port formed at a central portion thereof, a pair of two compression chambers continuously moving toward the discharge port, and a plurality of bypass portions formed at each interval along a movement path of each compression chamber in the both compression chambers. Compression gradients of the both compression chambers are different from each other. An interval between a bypass portion closest to the discharge port and another bypass portion adjacent to the bypass portion among the bypass portions of each compression chamber is defined as a first interval. The first interval of a second bypass portion belonging to a compression chamber having a relatively larger compression gradient is smaller than the first interval of a first bypass portion belonging to the other compression chamber.

Scroll compressor with bypass portions

A compressor includes a driving motor, a centrifugation space, a discharge pipe, a rotary shaft, a compression portion, a pump assembly, and an oil pickup. The centrifugation space is defined inside a case by a downstream side of the driving motor and the case, and enables centrifugation of a compressed refrigerant and a lubricant oil. The discharge pipe can discharge the refrigerant from the centrifugation space outside the case. The rotary shaft is coupled to a rotor of the driving motor and defines an oil supply path. The compression portion is provided at an upstream side of the driving motor and can compress the refrigerant as the rotary shaft rotates. The pump assembly is provided below the rotary shaft and can pump oil as rotated with the rotary shaft. The oil pickup defines an oil supply path between the pump assembly and a low oil space formed inside the case.

Scroll compressor of lower compression type enabling active oil supply

A laundry treating apparatus may include a drum in which laundry is stored, an air flow passage through which air is circulated, and a heating duct configured to supply hot air to the drum. The air flow passage and heating duct may be configured to prevent or reduce or cooling or condensing of moisture in the circulated air. A steam compressor may be provided to compress some of the air flowing through the air flow passage.

Laundry treating apparatus

A scroll compressor is provided that may include a casing; a drive motor provided at an inner space of the casing; a rotational shaft coupled to a rotor of the drive motor, and rotated together with the rotor; a frame provided below the drive motor; a fixed scroll provided below the frame, and having a fixed wrap; and an orbiting scroll provided between the frame and the fixed scroll, having an orbiting wrap so as to form a compression chamber including a suction chamber, an intermediate pressure chamber, and a discharge chamber, by being engaged with the fixed wrap. In a state in which a center of the fixed scroll and a center of the orbiting scroll are substantially the same, an interval between the fixed wrap and the orbiting wrap gradually increases towards the suction chamber from the discharge chamber.

Growing community of inventors

Seoul, South Korea

Cheolhwan Kim