Thrust bearing for turbo compressor

Disclosed herein is a thrust bearing for a turbo compressor, the thrust bearing has a structure that is modified in response to a portion where a deformation amount of a thrust runner is relatively large on the basis of magnitude of a force applied at the time of rotation of a shaft of a turbo compressor, to maintain a thickness of an oil film constantly and to increase a load supporting force of the thrust bearing, thereby ensuring improved durability of the thrust bearing.

OIL LEVEL DETECTING DEVICE FOR A COMPRESSOR AND AN AIR CONDITIONING SYSTEM HAVING THE SAME

An oil level detecting device for a compressor and an air conditioning system having the same are provided. The oil level detecting device may be provided in a compressor including a compression device that introduces and compresses a working fluid, a driving device mechanically connected to the compression device that operates the compression device, and a case that accommodates the compression device and the driving device thereinside and having an oil storage space that stores oil at a lower portion thereof. The oil level detecting device may include a detector including a supporting portion configured to be attached to the case and a detecting portion that protrudes inside the case. At least one property of the detecting portion may vary according to an oil level inside the case. The oil level detecting device may also include a signal processor including an electronic element having at least one reference property. The signal processor may compare the at least one property of the detecting ...

Scroll compressor with an arcuate and a logarithmic spiral sections

A scroll compressor is provided which is configured such that an arcuate section may be formed from a suction end of a wrap to a first point to increase a suction volume, and a logarithmic spiral section in which a wrap thickness increases may be formed from a second point to a discharge end of the wrap. This may increase a volume ratio of the compressor so as to increase a capacity of the compressor and prevent damage to the wrap due to a high compression ratio operation, thereby enhancing reliability of the compressor.

Scroll compressor with differential pressure hole

A scroll compressor is provided that may include a differential pressure hole formed at or in an orbiting scroll that communicates a high pressure part with an intermediate pressure part, a decompression portion formed in the differential pressure hole and having a pin member inserted therein to decompress oil. An inner diameter D1 of the decompression portion may be greater than an outer diameter D2 of the pin member. The decompression portion may include an inlet through which oil may be introduced from the high pressure part into the differential pressure hole, and an outlet through which oil from the differential pressure hole may be discharged into the intermediate pressure part.

Scroll compressor with differential pressure hole and communication hole

A scroll compressor is provided that includes an oil recollecting pump to recollect oil discharged from a shell, thus to effectively recollect oil discharged out of the compressor, and a differential pressure hole formed at a position where it communicates with compression chambers after a suction completion timing, such that oil stored in an inner space of the shell can be supplied into the compression chambers using a pressure difference between a high-pressure inner space of the shell and a low-pressure compression chambers, resulting in allowing oil to be smoothly supplied to a compression unit even during low-speed driving of the compressor and preventing an occurrence of a suction loss due to oil.

Scroll compressor

A compressor according to the present disclosure may include a container; a drive motor provided in the container; a crankshaft coupled to a rotor of the drive motor; a first scroll coupled to the crankshaft to receive a rotational force of the drive motor to perform an orbiting movement; a second scroll coupled to the first scroll to form a first compression unit and a second compression unit along with the first scroll; and a vane provided in the first scroll or second scroll to be brought into contact with the other side scroll to form the second compression unit, wherein the first compression unit is carried out in a scroll compression mode and the second compression unit is carried out in a rotary compression mode.

Scroll compressor

A scroll compressor is provided that may include a casing having a sealed inner space; a drive motor provided in the inner space of the casing to generate a rotational force; a rotational shaft rotatably coupled to the drive motor; an orbiting scroll formed of an aluminum material, and coupled to the rotational shaft to perform an orbiting movement; a fixed scroll coupled to the orbiting scroll to form a compression space; and an Oldham ring coupled to the orbiting scroll, and formed of a sintered metal. With this structure, it may be possible to prevent the Oldham ring from being worn out due to contact with the orbiting scroll. Further, a weight loss portion or wear-resistant coating layer may be formed on a portion of the Oldham ring, thereby suppressing or preventing vibration noise of the scroll compressor from being increased due to a weight increase of the Oldham ring.

Turbo compressor having an inner passage for cooling the motor

A turbo compressor includes a driving unit including a stator and a rotor that are configured to generate a rotational force and a rotary shaft that is connected to and rotated by the rotor, an impeller connected to the rotary shaft to pressurize a suction refrigerant in the radial direction of the rotary shaft and a casing that receives the driving unit and the impeller and supports the rotary shaft. The casing includes a first shell to which the stator is fixed and that rotatably supports the rotary shaft, and a second shell that is spaced apart from the first shell and surrounds the first shell. A shell passage is defined between the first and second shells. The discharged refrigerant cools the driving unit, which improves the efficiency of the compressor.

Scroll compressor having a bush bearing provided on a boss of orbiting scroll

A scroll compressor is provided in which a boss of an orbiting scroll is inserted into and coupled to a boss coupling recess of a crank shaft, so that friction loss of a bearing portion of the crank shaft may be reduced, compression efficiency and reliability of the compressor may be enhanced, and noise and material costs may be reduced. A bush bearing may be formed as a coating on the boss of the orbiting scroll, so that a thickness of the bearing portion of the crank shaft may be reduced. Since an outer circumferential surface of the bearing portion is in contact with an inner circumferential surface of the boss coupling recess, damage to the bearing portion may be prevented.

Electronic device and method for controlling the same

The present disclosure relates to an electronic device capable of performing complex biometric authentication, and the electronic device may include a plurality of biometric sensors configured to sense different biometric information, a security module configured to calculate a matching score for each of the different biometric information through a comparison between the different biometric information and previously registered user information, and calculate fake probability information for each of the different biometric information in consideration of a fake factor of the different biometric information, and perform user authentication using the matching score and the fake probability information calculated for each of the different biometric information, and a controller configured to control the electronic device based on a user authentication result performed by the security module.

Turbo compressor

A turbo compressor is provided that may include an impeller housing having an impeller accommodation space, an inlet formed at a first side of the impeller accommodation space, and an outlet formed at a second side of the impeller accommodation space that communicates with the inlet; an impeller accommodated in the impeller accommodation space of the impeller housing, rotated together with a rotary shaft by being coupled to the rotary shaft, and configured to centrifugally-compress a fluid suctioned through the inlet of the impeller housing and discharge the compressed fluid outside of the impeller housing through the outlet; a back pressure space formed between a rear surface of the impeller and the impeller housing; a back pressure passage connected between the outlet of the impeller housing and the back pressure space; and a back pressure control valve installed between the back pressure passage and the back pressure space, and configured to selectively open and close a region therebetween ...

Smart alarm providing terminal and alarm providing method thereof

Disclosed are a smart alarm providing terminal and an alarm proving method thereof. The smart alarm providing terminal includes an alarm unit to drive an alarm of the terminal, a voice conversation unit to perform a voice conversation function between a user and the terminal, a user information provision unit to provide different personalized information according to respective users, a memory unit to store data to perform the voice conversation function and to provide the personalized information, and a controller to control the voice conversation unit and the user information provision unit so as to enable the voice conversation function and provision of the personalized information when the alarm of the terminal is driven.

Oil level detecting device for a compressor and an air conditioning system having the same

An oil level detecting device for a compressor and an air conditioning system having the same are provided. The oil level detecting device may be provided in a compressor including a compression device that introduces and compresses a working fluid, a driving device mechanically connected to the compression device that operates the compression device, and a case that accommodates the compression device and the driving device thereinside and having an oil storage space that stores oil at a lower portion thereof. The oil level detecting device may include a detector including a supporting portion configured to be attached to the case and a detecting portion that protrudes inside the case. At least one property of the detecting portion may vary according to an oil level inside the case. The oil level detecting device may also include a signal processor including an electronic element having at least one reference property. The signal processor may compare the at least one property of the detecting ...

Turbo compressor

A turbo compressor comprises a rotary shaft including a rotor; a first impeller coupled to one side of the rotary shaft, a thrust bearing runner coupled between the first impeller and the rotary shaft, an impeller sleeve compressed and coupled between the first impeller and the thrust bearing runner, a second impeller coupled to the other side of the rotary shaft, and a tie rod passing through the first impeller and a thrust bearing and fastened to the rotary shaft.

Turbo compressor

Provided is a turbo compressor. The turbo compressor includes a driving shaft, a first impeller, a second impeller, a first shroud, a second shroud, a first-stage outflow passage, and a second-stage outflow passage. Also, the turbo compressor includes a gap adjustment passage that is branched from at least one of the first-stage outflow passage or the second-stage outflow passage to extend to the first shroud.

Hermetic compressor having oil guide that surrounds rotating shaft

A hermetic compressor according to the present disclosure may include an oil guide disposed on a rotating shaft between a driving motor and a main frame, the oil guide may include an oil block surrounding a main bearing surface between the main frame and the rotating shaft, and one end of the oil block may radially overlap a shaft support protrusion of the main frame. This can suppress oil returned after lubricating a compression unit from being scattered, thereby reducing a leakage of the oil to outside of a casing through a refrigerant discharge pipe.

UNLOCK METHOD USING NATURAL LANGUAGE PROCESSING AND TERMINAL FOR PERFORMING SAME

The present description relates to an unlock method and to a terminal for performing same, the unlock method being performed by a terminal that provides a lock function, the unlock method comprising: a step of displaying a voice input screen on a lock screen of the terminal; a step of taking, as an input, voice from a user; a step of performing natural language processing on the voice to acquire an object constituting the voice; a step of determining whether or not the object contains a passphrase for unlocking; and a step of unlocking the terminal or maintaining the terminal in the locked state depending on the result of the determination of whether the object contains the passphrase.

Bush bearing having outer lubricating layer, manufacturing method therefor and scroll compressor having same applied thereto

A bush bearing having an outer lubricating layer, a manufacturing method therefor and a scroll compressor having same applied thereto, according to the present disclosure, includes a bush bearing comprising: a base member which has a cylindrical shape having no separated surfaces along the circumferential direction; and a lubricating member which is formed from a material having a lower rigidity and more excellent lubricity than the base member, and has a cylindrical shape having no separated surfaces along the circumferential direction by being integrally provided to the outer circumferential surface of the base member, wherein the cylindricity of the outer circumferential surface of the lubricating member satisfies a value that is within 0.6% of the average thickness of the lubricating member, and the lubricating member has carbon fiber contained in a resin base, wherein the carbon fiber has cut surfaces exposed on both ends of the lubricating member.

SCROLL COMPRESSOR

A scroll compressor is provided that may include a differential pressure hole formed at or in an orbiting scroll that communicates a high pressure part with an intermediate pressure part, a decompression portion formed in the differential pressure hole and having a pin member inserted therein to decompress oil. An inner diameter D of the decompression portion may be greater than an outer diameter D of the pin member. The decompression portion may include an inlet through which oil may be introduced from the high pressure part into the differential pressure hole, and an outlet through which oil from the differential pressure hole may be discharged into the intermediate pressure part. 1. A scroll compressor , comprising:a shell having an inner space configured to be filled with refrigerant, the inner space containing a predetermined amount of oil;a drive motor installed in the shell;a crankshaft coupled to the drive motor and having an oil passage formed therethrough;a fixed scroll fixed to the shell and having a fixed wrap; andan orbiting scroll having an orbiting wrap engaged with the fixed wrap, the orbiting scroll forming compression chambers together with the fixed scroll while orbiting with respect to the fixed scroll, wherein the orbiting scroll comprises a differential pressure hole that communicates a high pressure space formed in the inner space of the shell with an intermediate pressure space formed between the fixed scroll and the orbiting scroll, and wherein the differential pressure hole comprises a decompression portion having a pin member inserted therein that decompresses oil, and wherein an inner diameter of the decompression portion is greater than an outer diameter of the pin member.2. The scroll compressor of claim 1 , wherein the decompression portion includes an inlet that communicates with the high pressure space and an outlet that communicates with the intermediate pressure space.3. The scroll compressor of claim 2 , wherein a length between ...

Vane rotary compressor

A vane rotary compressor includes: a cylinder forming a compression space having an inlet port and an outlet port, a roller having an outer circumferential surface of one side thereof almost coming into contact with an inner circumferential surface of the cylinder to form a contact point, and a plurality of vanes slidably inserted into the roller to protrude toward the inner circumferential surface of the cylinder so as to divide the compression space into a plurality of compression chambers, wherein ion at least one of the outer circumferential surface of the roller and the inner circumferential surface of the cylinder is provided a surface contact portion between the outer circumferential surface of the cylinder and the inner circumferential surface of the roller is constantly maintained in a preset section including the contact point in a circumferential direction.

Fluid compressor

A fluid compressor includes a case, a fixed scroll, an orbiting scroll, a motor, and at least one anti-rotation unit. The case is configured to form an external appearance thereof. The fixed scroll is fixed in the case. The orbiting scroll is engaged with the fixed scroll at one side of the fixed scroll, and performs partitioning of a compression chamber. The motor provides the orbiting scroll with drive power. The anti-rotation unit is coupled to a side surface of the orbiting scroll so as to prevent rotation of the orbiting scroll.

Scroll compressor having shaft frame support including guide holes to flow oil for bearing lubrication

A scroll compressor may include a rotational shaft, the rotational shaft including a first frame support having an inner circumferential surface, into which a boss of a first scroll is inserted, and an outer circumferential surface that forms an outer surface of the rotational shaft; and at least one guide hole that extends from the inner circumferential surface to the outer circumferential surface.

AIR CONDITIONER AND METHOD OF CONTROLLING THE SAME

An air conditioner and a method of operating the same are provided. The air conditioner may include a plurality of compressors, each of which may include a casing that stores oil therein, and an oil level detecting device that detects an oil level within the casing. Once oil levels within each of the plurality of compressors are detected, oil may be redistributed between the plurality of compressors without interrupting a normal operation of the air conditioner. Oil may be transferred from a compressor having an oil level greater than a desired amount to a compressor having an oil level less than the desired amount. If there remains a compressor that contains an insufficient amount of oil after redistributing the oil among the plurality of compressors, an oil collecting operation may be performed.

MOBILE TERMINAL AND METHOD OF GROUPING APPLICATIONS THEREOF

The present disclosure relates to a mobile terminal capable of determining a category of an application based on a context type related to the application executable in the mobile terminal and an operation control method thereof, thereby allowing a user to intuitively and conveniently manage applications executable in the mobile terminal. To this end, a mobile terminal according to an embodiment of the present invention may include a storage unit configured to store an application and an object set to execute the application; a display unit configured to display the object on a screen; and a controller configured to acquire a context type of the application when the object displayed on the screen is selected, and determine a category of the application based on the acquired context type. 1. A mobile terminal , comprising:a storage unit configured to store an application and an object set to execute the application;a display unit configured to display the object on a screen; anda controller configured to acquire a context type of the application when the object displayed on the screen is selected, and determine a category of the application based on the acquired context type.2. The mobile terminal of claim 1 , wherein the controller selects the object displayed on the screen when the application is installed or executed.3. The mobile terminal of claim 1 , further comprising:an input unit configured to sense an input for selecting the object displayed on the screen.4. The mobile terminal of claim 1 , wherein the controller controls the display unit to display a context type of the application on the screen when the object displayed on the screen is selected.5. The mobile terminal of claim 1 , wherein the controller controls the display unit to display at least one object related to a context type of the application on the screen when the object displayed on the screen is selected.6. The mobile terminal of claim 1 , wherein the controller acquires the context type ...

SCROLL COMPRESSOR

A scroll compressor is provided that may include a casing having a sealed inner space; a drive motor provided in the inner space of the casing to generate a rotational force; a rotational shaft rotatably coupled to the drive motor; an orbiting scroll formed of an aluminum material, and coupled to the rotational shaft to perform an orbiting movement; a fixed scroll coupled to the orbiting scroll to form a compression space; and an Oldham ring coupled to the orbiting scroll, and formed of a sintered metal. With this structure, it may be possible to prevent the Oldham ring from being worn out due to contact with the orbiting scroll. Further, a weight loss portion or wear-resistant coating layer may be formed on a portion of the Oldham ring, thereby suppressing or preventing vibration noise of the scroll compressor from being increased due to a weight increase of the Oldham ring. 1. A scroll compressor , comprising:a casing having a sealed inner space;a drive motor provided in the inner space of the casing to generate a rotational force;a rotational shaft rotatably coupled to the drive motor;an orbiting scroll formed of an aluminum material, and coupled to the rotational shaft to perform an orbiting movement;a fixed scroll coupled to the orbiting scroll to form a compression space; andan Oldham ring coupled to the orbiting scroll, and formed of a sintered metal.2. The scroll compressor of claim 1 , wherein the Oldham ring includes:a ring; anda plurality of keys formed in a protruding manner on at least one of axial-direction lateral surfaces of the ring to allow the Oldham ring to be slidably coupled in a radial direction to key grooves of the orbiting scroll, wherein the ring is formed with a stepped surface on at least one of the axial-direction lateral surfaces.3. The scroll compressor of claim 1 , wherein the Oldham ring includes:a ring; anda plurality of keys formed in a protruding manner on at least one of axial-direction lateral surfaces of the ring to allow the ...

Oil level detecting device for a compressor and an air conditioning system having the same

An oil level detecting device for a compressor and an air conditioning system having the same are provided. The oil level detecting device may be provided in a compressor including a compression device that introduces and compresses a working fluid, a driving device mechanically connected to the compression device that operates the compression device, and a case that accommodates the compression device and the driving device thereinside and having an oil storage space that stores oil at a lower portion thereof. The oil level detecting device may include a detector including a supporting portion configured to be attached to the case and a detecting portion that protrudes inside the case. At least one property of the detecting portion may vary according to an oil level inside the case. The oil level detecting device may also include a signal processor including an electronic element having at least one reference property. The signal processor may compare the at least one property of the detecting ...

Bush bearing and a scroll compressor including a bush bearing

A bush bearing and a scroll compressor including a bush bearing are provided. A boss of an orbiting scroll may be inserted into and coupled to a boss coupling groove of a rotational shaft, and thus, an outer circumferential surface of a bush bearing may wholly contact an inner circumferential surface of the boss coupling groove, thereby decreasing wear of the bush bearing. Further, friction loss in the bush bearing may be reduced, and thus, compression efficiency and reliability may be enhanced, noise may be reduced, and material costs may be reduced. Furthermore, despite that the bush bearing is formed in a ring shape and press-fitted to the boss, as the bush bearing may be formed of a plastic material having an ether ketone bonding in consideration of a thermal expansion rate, an elongation, and a press-fit range, the bush bearing may be effectively prevented from being detached from the boss, thereby enhancing a reliability of a compressor.

Smart alarm providing terminal and alarm providing method thereof

Disclosed are a smart alarm providing terminal and an alarm proving method thereof. The smart alarm providing terminal includes an alarm unit to drive an alarm of the terminal, a voice conversation unit to perform a voice conversation function between a user and the terminal, a user information provision unit to provide different personalized information according to respective users, a memory unit to store data to perform the voice conversation function and to provide the personalized information, and a controller to control the voice conversation unit and the user information provision unit so as to enable the voice conversation function and provision of the personalized information when the alarm of the terminal is driven.

Scroll compressor

A scroll compressor includes an oil recollecting pump for recollecting oil discharged from a shell, thus to effectively recollect oil discharged out of the compressor. A differential pressure hole is formed at a position where it communicates with compression chambers after a suction completion timing such that oil stored in an inner space of the shell can be supplied into the compression chambers using pressure difference between the high-pressure inner space of the shell and the low-pressure compression chambers, resulting in allowing oil to be smoothly supplied to a compression unit even during low-speed driving of the compressor and preventing beforehand an occurrence of a suction loss due to oil.

ELECTRONIC DEVICE AND METHOD FOR CONTROLLING THE SAME

The present disclosure relates to an electronic device capable of performing multimodal biometric authentication, and the electronic device may include a memory configured to store information; a plurality of sensors configured to receive biometric information; a controller configured to: receive contextual information from one or more of the plurality of sensors; receive first biometric information from a first sensor of the plurality of sensors; perform a first biometric authentication comprising a generated similarity value between the received first biometric information and first biometric user information stored in the memory, wherein the first biometric authentication uses a first comparison threshold which varies based on the received contextual information; when the first biometric authentication is successful, execute the function according to the successful authentication; when the first biometric authentication is unsuccessful, perform a second biometric authentication using a second biometric information received from a second sensor of the plurality of sensors; and when a result of the first biometric authentication cannot be determined, perform a third biometric authentication using a third biometric information received from a third sensor of the plurality of sensors. 1. An electronic device configured to perform biometric authentication for executing a function , the device comprising:a memory configured to store information;a plurality of sensors configured to receive biometric information;a controller configured to:receive contextual information from one or more of the plurality of sensors;receive first biometric information from a first sensor of the plurality of sensors;perform a first biometric authentication comprising a generated similarity value between the received first biometric information and first biometric user information stored in the memory, wherein the first biometric authentication uses a first comparison threshold which varies ...

SCROLL COMPRESSOR

A compressor according to the present disclosure may include a container; a drive motor provided in the container; a crankshaft coupled to a rotor of the drive motor; a first scroll coupled to the crankshaft to receive a rotational force of the drive motor to perform an orbiting movement; a second scroll coupled to the first scroll to form a first compression unit and a second compression unit along with the first scroll; and a vane provided in the first scroll or second scroll to be brought into contact with the other side scroll to form the second compression unit, wherein the first compression unit is carried out in a scroll compression mode and the second compression unit is carried out in a rotary compression mode. 1. A compressor , comprising:a container;a drive motor provided in the container;a crankshaft coupled to a rotor of the drive motor;a first scroll coupled to the crankshaft to receive a rotational force of the drive motor to perform an orbiting movement;a second scroll coupled to the first scroll to form a first compression unit and a second compression unit along with the first scroll; and a second plate portion;', 'a second wrap portion formed on the second plate portion to constitute a first compression unit and', 'a compression space portion constituting the second compression unit is formed on the second plate portion., 'a vane provided in the first scroll or second scroll to be brought into contact with the other side scroll to form the second compression unit, wherein the first compression unit is carried out in a scroll compression mode and the second compression unit is carried out in a rotary compression mode, and wherein the second scroll comprises2. The compressor of claim 1 , wherein the first scroll comprises:a first plate portion;a first wrap portion formed to be protruded at a predetermined height at one side of the first plate portion to constitute the first compression unit; anda piston portion formed at the first plate portion to ...

SCROLL COMPRESSOR

A scroll compressor is provided that may include a casing; a drive motor; a fixed scroll that forms a compression space by being coupled to the orbiting scroll; and a discharge cover provided at an inner space of the casing, the discharge cover having a space that communicates with the compression space and separated from the inner space of the casing, and having one or more discharge hole on a side surface thereof, the one or more discharge hole providing communication between an inside and an outside of the space. With such a configuration, vibration noise of the scroll compressor may be more reduced in comparison with a case in which an oil separator is provided outside of the casing. Further, as an area of the one or more discharge hole and a volume of the space are optimized, efficiency of the scroll compressor may be enhanced. 1. A scroll compressor , comprising:a casing having a sealed inner space;a drive motor provided at the inner space of the casing, and configured to generate a rotational force;a rotational shaft rotated by the drive motor;an orbiting scroll that performs an orbital motion by being coupled to the rotational shaft;a fixed scroll that forms a compression space by being coupled to the orbiting scroll; anda discharge cover provided at the inner space of the casing, the discharge cover having a space that communicates with the compression space while being separated from the inner space of the casing, and having one or more discharge hole at a side surface thereof, the one or more discharge holes providing communication between an inside and an outside of the space.2. The scroll compressor of claim 1 , wherein a communication hole claim 1 , configured to communicate the inside of the space of the discharge cover with the inner space of the casing at which the drive motor is provided claim 1 , is formed at the fixed scroll.3. The scroll compressor of claim 2 , wherein a ratio (B/A) between a sectional area (B) of the one or more discharge hole ...

Fluid compressor

A fluid compressor includes a case, a fixed scroll, an orbiting scroll, a motor, and at least one anti-rotation unit. The case is configured to form an external appearance thereof. The fixed scroll is fixed in the case. The orbiting scroll is engaged with the fixed scroll at one side of the fixed scroll, and performs partitioning of a compression chamber. The motor provides the orbiting scroll with drive power. The anti-rotation unit is coupled to a side surface of the orbiting scroll so as to prevent rotation of the orbiting scroll.

OIL DETECTING DEVICE FOR COMPRESSOR AND COMPRESSOR INCLUDING OIL DETECTING DEVICE

An oil detecting device for a compressor and a compressor including an oil detecting device are provided. A casing in which oil is received has a plurality of capillary tubes in an inner space of the casing, and a condition of oil is detected on the basis of a result of a measured pressure from the plurality of capillary tubes. 1. An oil detecting device for a compressor , comprising:a sensor including a plurality of capillary tubes disposed at an inner space of a casing of the compressor in which a predetermined amount of oil is accommodated, the plurality of capillary tubes being in contact with the oil;a regulator connected to each of the plurality of capillary tubes to adjust a pressure of the plurality of capillary tubes so that the oil is introduced into the plurality of capillary tubes; anda detector electrically connected to the sensor and the regulator to measure the pressure of the plurality of capillary tubes, adjusted by the regulator, so as to detect a condition of the oil based on results of the measured pressure.2. The device of claim 1 , wherein an end of at least one of the plurality of capillary tubes has a different height or depth based on an oil level of the oil.3. The device of claim 1 , wherein at least one of the plurality of capillary tubes has a smaller inner diameter than the other capillary tubes of the plurality of capillary tubes.4. The device of claim 1 , wherein at least two capillary tubes of the plurality of capillary tubes have different inner diameters than the other capillary tubes of the plurality of capillary tubes.5. The device of claim 4 , wherein the plurality of capillary tubes is formed such that a capillary tube having a smaller inner diameter has a smaller depth with respect to the oil level than a capillary tube having a larger inner diameter.6. The device of claim 1 , wherein the plurality of capillary tubes is disposed in a horizontal or vertical direction with respect to an oil level of the oil.7. The device of claim ...

TURBO COMPRESSOR

A turbo compressor comprises a rotary shaft including a rotor; a first impeller coupled to one side of the rotary shaft, a thrust bearing runner coupled between the first impeller and the rotary shaft, an impeller sleeve compressed and coupled between the first impeller and the thrust bearing runner, a second impeller coupled to the other side of the rotary shaft, and a tie rod passing through the first impeller and a thrust bearing and fastened to the rotary shaft. 1. A turbo compressor , comprising:a rotary shaft comprising a rotor and a groove formed at a first side of the rotary shaft;a first impeller provided at the first side of the rotary shaft such that a base of the first impeller faces the groove;a thrust bearing runner provided between the first impeller and the rotary shaft;a second impeller provided at a second side of the rotary shaft opposite to the first side, the second impeller having a smaller maximum diameter than that of the first impeller; anda tie rod having an outer diameter that is smaller than an inner diameter of the groove, wherein the tie rod is configured to be coupled to the groove when a preload is applied to the first impeller and the thrust bearing runner.2. The turbo compressor of claim 1 , further comprising a coupling sleeve provided between the first impeller and the thrust bearing runner.3. The turbo compressor of claim 2 , wherein the first impeller and the thrust bearing runner comprise coupling shafts configured to be inserted into the coupling sleeve so as to couple the first impeller and the thrust bearing runner.4. The turbo compressor of claim 3 , wherein outer diameters of the coupling shafts are equal to or greater than an inner diameter of the coupling sleeve such that the coupling shafts are coupled to the coupling sleeve by press fitting.5. The turbo compressor of claim 4 , wherein a sum of lengths of the coupling shafts inserted into the coupling sleeve is smaller than a length of the coupling sleeve such that the ...

HERMETIC COMPRESSOR

A hermetic compressor according to the present disclosure may include an oil guide disposed on a rotating shaft between a driving motor and a main frame, the oil guide may include an oil block surrounding a main bearing surface between the main frame and the rotating shaft, and one end of the oil block may radially overlap a shaft support protrusion of the main frame. This can suppress oil returned after lubricating a compression unit from being scattered, thereby reducing a leakage of the oil to outside of a casing through a refrigerant discharge pipe. 1. A hermetic compressor , comprising:a casing having an inner space defined therein and hermetically sealed;a driving motor disposed in the inner space of the casing;a rotating shaft coupled to the driving motor;a compression unit disposed in the inner space of the casing and coupled to the rotating shaft;a main frame disposed between the driving motor and the compression unit, the main frame comprising a shaft support protrusion that has an annular shape, that extends toward the driving motor, and that supports the rotating shaft;a refrigerant suction pipe that passes through the casing and is coupled to the compression unit, the refrigerant suction pipe being in fluid communication with the compression unit;a refrigerant discharge pipe that passes through the casing and is in fluid communication with the inner space of the casing; andan oil guide that surrounds the rotating shaft and is disposed between the driving motor and the main frame,wherein the main frame and the rotating shaft are spaced apart from each other in a radial direction to thereby define a main bearing surface therebetween, andwherein the oil guide is disposed radially outward relative to the shaft support protrusion and surrounds the main bearing surface.2. The compressor of claim 1 , wherein the oil guide comprises an oil block that extends toward the main frame and surrounds the main bearing surface claim 1 , andwherein the oil block has a ...

Vane rotary compressor

A vane rotary compressor has a cylinder. A main bearing and a sub bearing are coupled to the cylinder forming a compression space. The main and sub bearing each have a back pressure pocket on a surface facing the cylinder. The main bearing and the sub bearing radially support a rotation shaft. A roller coupled to the shaft is disposed within the compression space. The roller has circumferentially spaced vane slots, each vane slot extending from an open end on an outer circumferential surface of the roller to a back pressure chamber disposed within the roller at an opposite end of each vane slot. A plurality of vanes slide within the vane slots and divide the compression space into compression chambers. At least one of the back pressure chambers in the vane slots fluidly communicates with at least one of the back pressure pockets in the main and sub bearings.

TURBO COMPRESSOR

A turbo compressor is provided that may include an impeller housing having an impeller accommodation space, an inlet formed at a first side of the impeller accommodation space, and an outlet formed at a second side of the impeller accommodation space that communicates with the inlet; an impeller accommodated in the impeller accommodation space of the impeller housing, rotated together with a rotary shaft by being coupled to the rotary shaft, and configured to centrifugally-compress a fluid suctioned through the inlet of the impeller housing and discharge the compressed fluid outside of the impeller housing through the outlet; a back pressure space formed between a rear surface of the impeller and the impeller housing; a back pressure passage connected between the outlet of the impeller housing and the back pressure space; and a back pressure control valve installed between the back pressure passage and the back pressure space, and configured to selectively open and close a region therebetween. 1. A turbo compressor , comprising:an impeller housing having an impeller accommodation space, an inlet formed at a first side of the impeller accommodation space, and an outlet formed at a second side of the impeller accommodation space that communicates with the inlet;an impeller accommodated in the impeller accommodation space of the impeller housing, rotated together with a rotary shaft by being coupled to the rotary shaft, and configured to centrifugally-compress a fluid suctioned through the inlet of the impeller housing and discharge the compressed fluid outside of the impeller housing through the outlet;a back pressure space formed between a rear surface of the impeller and the impeller housing;a back pressure passage connected between the outlet of the impeller housing and the back pressure space; anda back pressure control valve installed between the back pressure passage and the back pressure space, and configured to selectively open and close a region therebetween. ...

Robot and method of controlling the same

A robot that includes: a communication interface configured to establish connection with a server; an output interface including at least one of a display or a speaker; a memory configured to store user information for each of a plurality of users; an input interface including at least one of a camera or a microphone; and a processor configured to control the output interface to output a content, control the output interface to output a message related to the content during or after outputting the content, obtain, via the input interface, interaction data with regard to the message from an interaction target person, when the interaction target person is selected from the plurality of users based on data obtained through the input interface; and update the user information of the interaction target person based on the obtained interaction data, or transmit the obtained interaction data to the server.

Vane rotary compressor

A vane rotary compressor includes: a cylinder forming a compression space having an inlet port and an outlet port, a roller having an outer circumferential surface of one side thereof almost coming into contact with an inner circumferential surface of the cylinder to form a contact point, and a plurality of vanes slidably inserted into the roller to protrude toward the inner circumferential surface of the cylinder so as to divide the compression space into a plurality of compression chambers, wherein ion at least one of the outer circumferential surface of the roller and the inner circumferential surface of the cylinder is provided a surface contact portion between the outer circumferential surface of the cylinder and the inner circumferential surface of the roller is constantly maintained in a preset section including the contact point in a circumferential direction.

BUSH BEARING HAVING OUTER LUBRICATING LAYER, MANUFACTURING METHOD THEREFOR AND SCROLL COMPRESSOR HAVING SAME APPLIED THERETO

A bush bearing having an outer lubricating layer, a manufacturing method therefor and a scroll compressor having same applied thereto, according to the present disclosure, includes a bush bearing comprising: a base member which has a cylindrical shape having no separated surfaces along the circumferential direction; and a lubricating member which is formed from a material having a lower rigidity and more excellent lubricity than the base member, and has a cylindrical shape having no separated surfaces along the circumferential direction by being integrally provided to the outer circumferential surface of the base member, wherein the cylindricity of the outer circumferential surface of the lubricating member satisfies a value that is within 0.6% of the average thickness of the lubricating member, and the lubricating member has carbon fiber contained in a resin base, wherein the carbon fiber has cut surfaces exposed on both ends of the lubricating member. 1. A bush bearing having an outer lubricating layer , the bush bearing comprising:a base member having a cylindrical shape without separated surfaces along a circumferential direction; anda lubricating member made of a material having a lower rigidity and more excellent lubricity than the base member, and having a cylindrical shape without separated surfaces along the circumferential direction by being integrally provided on an outer circumferential surface of the base member,wherein a cylindricity of an outer circumferential surface of the lubricating member satisfies a value that is within 0.6% of an average thickness of the lubricating member.2. The bush bearing of claim 1 , wherein a difference of outer diameters of both ends of the lubricating member is within 3% of an outer diameter of the lubricating member.3. The bush bearing of claim 1 , wherein the outer circumferential surface of the base member is provided with a knurling portion to increase a contact area with an inner circumferential surface of the ...

SCROLL COMPRESSOR

A scroll compressor is provided in which a boss of an orbiting scroll is inserted into and coupled to a boss coupling recess of a crank shaft, so that friction loss of a bearing portion of the crank shaft may be reduced, compression efficiency and reliability of the compressor may be enhanced, and noise and material costs may be reduced. A bush bearing may be formed as a coating on the boss of the orbiting scroll, so that a thickness of the bearing portion of the crank shaft may be reduced. Since an outer circumferential surface of the bearing portion is in contact with an inner circumferential surface of the boss coupling recess, damage to the bearing portion may be prevented. 1. A scroll compressor , comprising:a container;a frame coupled to the container and having a bearing hole formed therein;a fixed scroll coupled to the frame, the fixed scroll comprising a fixed wrap provided on a fixed plate; an orbiting wrap provided on an orbiting plate, the orbiting wrap engaged with the fixed wrap so as to form continuously moving compression chambers therebetween; and', 'a boss that protrudes from the orbiting plate into the bearing hole formed in the frame; and, 'an orbiting scroll supported by the frame, the orbiting scroll comprising a boss coupling recess formed at an upper end thereof such that the boss of the orbiting scroll is inserted into the boss coupling recess; and', 'a bush bearing provided on an outer circumferential surface of the boss, the bush bearing forming a bearing surface with an inner circumferential surface of the boss coupling recess., 'a crank shaft coupled to the boss of the orbiting scroll and to a driving motor provided in the container so as to transfer rotary power from the driving motor to the orbiting scroll, wherein the crank shaft comprises2. The scroll compressor of claim 1 , wherein the boss coupling recess is eccentric with respect to a central axis of the crank shaft.3. The scroll compressor of claim 2 , wherein a minimum gap (a) ...

SCROLL COMPRESSOR

A scroll compressor is provided which is configured such that an arcuate section may be formed from a suction end of a wrap to a first point to increase a suction volume, and a logarithmic spiral section in which a wrap thickness increases may be formed from a second point to a discharge end of the wrap. This may increase a volume ratio of the compressor so as to increase a capacity of the compressor and prevent damage to the wrap due to a high compression ratio operation, thereby enhancing reliability of the compressor. 1. A scroll compressor , comprising:a fixed scroll having a fixed wrap; andan orbiting scroll having an orbiting wrap engaged with the fixed wrap, the orbiting scroll orbiting with respect to the fixed scroll to form compression chambers therebetween, wherein each of the fixed wrap and the orbiting wrap is formed with an arcuate section from a suction end to an arbitrary point in a direction toward a discharge end, and a logarithmic spiral section from another arbitrary point to the discharge end.2. The scroll compressor of claim 1 , wherein the arcuate section of each wrap has a same radius from the discharge end along a length of the arcuate section.3. The scroll compressor of claim 2 , wherein the arcuate section is formed in a section from the suction end up to a range of approximately 180° to 360° in a direction toward the discharge end.4. The scroll compressor of claim 1 , wherein the logarithmic spiral section of each wrap is formed such that a wrap thickness thereof increases toward the discharge end.5. The scroll compressor of claim 1 , wherein a maximum wrap thickness of the logarithmic spiral section is approximately 1.5 to 1.8 times of a maximum wrap thickness of the arcuate section.6. The scroll compressor of claim 1 , wherein a bypass hole is formed near the discharge end of the fixed wrap claim 1 , and wherein a diameter of the bypass hole is smaller than the wrap thickness of the logarithmic spiral section.7. The scroll compressor of ...

TURBO COMPRESSOR

A turbo compressor according to the present invention comprises: a driving unit including a stator and a rotor that generate a rotational force and a rotary shaft that is connected to and rotated by the rotor; an impeller connected to the rotary shaft to pressurize a suction refrigerant in the radial direction of the rotary shaft; and a casing configured to receive the driving unit and the impeller and support the rotary shaft, wherein the casing comprises: a first shell to which the stator is fixed, the first shell rotatably supporting the rotary shaft; and a second shell spaced apart from the first shell to surround the first shell, a shell passage for the refrigerant pressurized by the impeller being defined in a space between the first and second shells. As a result, the discharge refrigerant cools the driving unit, which improves the efficiency of the compressor. 1. A turbo compressor , comprising:a driving unit configured to generate rotational force, the driving unit including a stator, a rotor, and a rotary shaft that is connected to the rotor, that is configured to rotate based on rotation of the rotor, and that extends in an axial direction;an impeller connected to the rotary shaft and configured to pressurize refrigerant in a radial direction of the rotary shaft; anda casing that receives the driving unit and the impeller and that supports the rotary shaft, a first shell coupled to the stator and configured to rotatably support the rotary shaft, and', 'a second shell that is spaced apart from the first shell and that surrounds the first shell, and, 'wherein the casing compriseswherein the first shell and the second shell define a shell passage in a space between the first and second shells, the shell passage being configured to guide refrigerant pressurized by the impeller.2. The turbo compressor of claim 1 , wherein the second shell comprises:a suction port that is defined at a position facing a surface of the impeller and that is configured to receive ...

Electronic device and method for controlling the same

The present disclosure relates to an electronic device capable of performing complex biometric authentication, and the electronic device may include a plurality of biometric sensors configured to sense different biometric information, a security module configured to calculate a matching score for each of the different biometric information through a comparison between the different biometric information and previously registered user information, and calculate fake probability information for each of the different biometric information in consideration of a fake factor of the different biometric information, and perform user authentication using the matching score and the fake probability information calculated for each of the different biometric information, and a controller configured to control the electronic device based on a user authentication result performed by the security module.

SCROLL COMPRESSOR

The present invention relates to a scroll compressor. A scroll compressor according to the present embodiment comprises a rotational shaft, wherein the rotational shaft comprises: a first frame support part having an inner circumferential surface portion, into which a boss part of a first scroll is inserted, and an outer circumferential surface portion for forming an outer surface thereof; and a guide hole penetrating from the inner circumferential surface portion toward the outer circumferential surface portion. 1. A scroll compressor , comprising:a rotational shaft in which an oil passage is formed;a main frame that supports an outer circumferential surface of the rotational shaft;a first scroll supported by the main frame and performing an orbiting movement by the rotation of the rotational shaft;a first bearing provided between the main frame and the rotational shaft; and a frame support having an inner circumferential surface into which a boss of the first scroll is inserted, and an outer circumferential surface forming an outer surface of the rotational shaft; and', 'at least one guide hole that extends from the inner circumferential surface of the frame support to the outer circumferential surface of the frame support, the at least one guide hole being configured to guide a flow of oil., 'a second bearing provided between the first scroll and the rotational shaft, wherein the rotational shaft comprises2. The scroll compressor according to claim 1 , further comprising a first recess formed in the inner circumferential surface of the frame support and a second recess formed in the outer circumferential surface of the frame support claim 1 , wherein the at least one guide hole extends from the first recess to the second recess.3. The scroll compressor according to claim 2 , further comprising a jaw that forms an upper end of the second recess.4. The scroll compressor according to claim 3 , wherein the jaw comprises a step that extends from the upper end of the ...

TURBO COMPRESSOR

Provided is a turbo compressor. The turbo compressor includes a driving shaft, a first impeller, a second impeller, a first shroud, a second shroud, a first-stage outflow passage, and a second-stage outflow passage. Also, the turbo compressor includes a gap adjustment passage that is branched from at least one of the first-stage outflow passage or the second-stage outflow passage to extend to the first shroud. 1. A turbo compressor comprising:a driving shaft;a first impeller coupled to a first end of the driving shaft;a second impeller coupled to a second end of the driving shaft;a first shroud that defines a first compression space accommodating the first impeller;a second shroud that defines a second compression space accommodating the second impeller;a first-stage outflow passage configured to guide refrigerant discharged from the first impeller;a second-stage outflow passage configured to guide refrigerant discharged from the second impeller; anda gap adjustment passage that is branched from at least one of the first-stage outflow passage or the second-stage outflow passage and extends to the first shroud.2. The turbo compressor according to claim 1 , wherein the first impeller and the first shroud define a first gap therebetween claim 1 ,wherein the gap adjustment passage extends to one side of the first shroud, andwherein the first shroud is configured to, based on refrigerant being supplied to the first shroud through the gap adjustment passage, move in a first direction toward the first impeller to thereby decrease the first gap.3. The turbo compressor according to claim 2 , further comprising a gap adjustment member coupled to the first shroud and configured to allow the first shroud to move relative to the first impeller.4. The turbo compressor according to claim 3 , wherein the gap adjustment member comprises an elastic member configured to apply an elastic force to the first shroud in a second direction away from the first impeller to thereby increase ...

Air conditioner and method of controlling the same

An air conditioner and a method of operating the same are provided. The air conditioner may include a plurality of compressors (100,100',100''), each of which may include a casing that stores oil therein, and an oil level detecting device (102,102',102'') that detects an oil level within the casing. Once oil levels within each of the plurality of compressors are detected, oil may be redistributed between the plurality of compressors without interrupting a normal operation of the air conditioner. Oil may be transferred from a compressor having an oil level greater than a desired amount to a compressor having an oil level less than the desired amount. If there remains a compressor that contains an insufficient amount of oil after redistributing the oil among the plurality of compressors, an oil collecting operation may be performed.

Turbo compressor

Scroll compressor

In a scroll compressor the present invention, a boss portion of an orbiting scroll is inserted to be coupled to a boss coupling recess of a crank shaft, and thus, friction loss of the bearing portion is reduced, enhancing compression efficiency and reliability and reducing noise and material costs Also, a bush bearing is coated to be formed on the boss portion of the orbiting scroll, a thickness of a bearing portion may be reduced. Also, since an outer circumferential surface of the bearing portion is in contact with an inner circumferential surface of the boss coupling recess, damage to the bearing portion may be prevented.

Scroll compressor

A scroll compressor disclosed herein is configured such that an arcuate section is formed from a suction end of a wrap to a first point to increase a suction volume and a logarithmic spiral section in which the wrap thickness is increased is formed from a second point to a discharge end of the wrap. This may increase a volume ratio of the compressor so as to increase a capacity of the compressor and prevent damage on the wrap due to a high compression ratio operation, thereby enhancing reliability of the compressor.

OIL DETECTION DEVICE FOR A COMPRESSOR AND THE SAME COMPREHENSIVE COMPRESSOR

Ölerkennungsgerät (100) für einen Kompressor (10), umfassend:eine Sensoreinheit (110), umfassend mehrere kapillare Röhren (111), die an einem inneren Raum eines Gehäuses (11) des Kompressors (10) angeordnet sind, in dem eine spezifische Ölmenge aufgenommen ist, um mit dem Öl in Kontakt zu sein;eine Regulierungseinheit (120), die an jede der mehreren kapillaren Röhren (111) zum Anpassen des Drucks der mehreren kapillaren Röhren (111) derart angeschlossen ist, dass das Öl in die mehreren kapillaren Röhren (111) eingeführt ist; undeine Erkennungseinheit (130), die elektrisch an die Sensoreinheit (110) und die Regulierungseinheit (120) angeschlossen ist, um den Druck der mehreren kapillaren Röhren (111) zu messen, der von der Regulierungseinheit (120) derart angepasst ist, dass der Zustand des Öls basierend auf Ergebnissen der Druckmessung erkannt ist, dadurch gekennzeichnet, dass wenigstens eine der mehreren kapillaren Röhren (111) einen kleineren Innendurchmesser aufweist. Oil detection device (100) for a compressor (10), comprising: a sensor unit (110) comprising a plurality of capillary tubes (111) arranged at an inner space of a housing (11) of the compressor (10) in which a specific amount of oil is accommodated to be in contact with the oil; a regulating unit (120) connected to each of the plurality of capillary tubes (111) for adjusting the pressure of the plurality of capillary tubes (111) such that the oil in the plurality of capillary tubes (111) is inserted; anda detection unit (130) electrically connected to the sensor unit (110) and the regulation unit (120) to measure the pressure of the plurality of capillary tubes (111) adjusted by the regulation unit (120) such that the state of the oil is detected based on results of the pressure measurement, characterized in that at least one of the plurality of capillary tubes (111) has a smaller inner diameter.

Turbo compressor

A turbo compressor, includes: an impeller housing having an impeller accommodation space, having an inlet formed at one side of the impeller accommodation space, and having an outlet formed at another side of the impeller accommodation space and communicated with the inlet; an impeller accommodated in the impeller accommodation space of the impeller housing, rotated together with a rotation shaft by being coupled to the rotation shaft, and configured to centrifugally-compress a fluid sucked through the inlet of the impeller housing, and to discharge the compressed fluid to outside of the impeller housing through the outlet; a back pressure space formed between a rear surface of the impeller and the impeller housing; a back pressure passage connected between the outlet of the impeller housing and the back pressure space; and a back pressure control valve installed between the back pressure passage and the back pressure space, and configured to selectively open and close a region therebetween.

Vane rotary compressor

Scroll compressor

A scroll compressor is disclosed. The scroll compressor includes a rotating shaft coupling portion axially extending from a central portion of an orbiting end plate to radially overlap an orbiting wrap, such that an eccentric portion of a rotating shaft is coupled thereto, and a portion of the orbiting wrap may extend from an end surface of the rotating shaft coupling portion facing a fixed end plate. With the configuration, a distance between bearing reaction force and gas reaction force acting on the orbiting scroll can be reduced, to stabilize a behavior of the orbiting scroll and thus reduce back pressure, thereby decreasing friction loss between scrolls. Simultaneously, compression chambers can be formed even in a central portion of the orbiting scroll, which can increase a compression ratio and improve volumetric efficiency.

Hermetic compressor

A hermetic compressor according to the present disclosure may include an oil guide disposed on a rotating shaft between a driving motor and a main frame, the oil guide may include an oil block surrounding a main bearing surface between the main frame and the rotating shaft, and one end of the oil block may radially overlap a shaft support protrusion of the main frame. This can suppress oil returned after lubricating a compression unit from being scattered, thereby reducing a leakage of the oil to outside of a casing through a refrigerant discharge pipe.

Turbo compressor and refrigeration cycle device having turbo compressor

A turbo compressor and a refrigeration cycle device having a turbo compressor are provided. The turbo compressor includes a housing having a motor chamber; a drive motor having a stator and a rotor in the motor chamber of the housing; a first compression portion and a second compression portion, respectively, provided on opposite ends of a rotary shaft; a connecting passage that connects an exit of the first compression portion and an entrance of the second compression portion; an inlet passage that penetrates a first side of the housing to communicate with an inside of the motor chamber and guide a refrigeration fluid to the motor chamber; and an outlet passage that penetrates a second side of the housing to communicate with the inside of the motor chamber and guide the refrigeration fluid in the motor chamber out of the housing. Thus, a gas foil bearing provided in the motor chamber may be quickly actuated by supplying the refrigeration fluid to the motor chamber, and at a same time, heat generated from the motor chamber may be quickly dissipated even in a highspeed operation, thereby improving efficiency of the turbo compressor and a refrigeration cycle device having a turbo compressor.

Scroll compressor

(125) A scroll compressor is disclosed. The scroll compressor includes a rotating shaft coupling portion (153) axially extending from a central portion of an orbiting end plate (151) to radially overlap an orbiting wrap (152), such that an eccentric portion (1251) of a rotating shaft (125) is coupled thereto, and a portion of the orbiting wrap may extend from an end surface of the rotating shaft coupling portion (153) facing a fixed end plate (141). With the configuration, a distance between bearing reaction force and gas reaction force acting on the orbiting scroll can be reduced, to stabilize a behavior of the orbiting scroll and thus reduce back pressure, thereby decreasing friction loss between scrolls. Simultaneously, compression chambers can be formed even in a central portion of the orbiting scroll (150), which can increase a compression ratio and improve volumetric efficiency.

Hermetic compressor

A hermetic compressor according to the present disclosure may include an oil guide disposed on a rotating shaft between a driving motor and a main frame, the oil guide may include an oil block surrounding a main bearing surface between the main frame and the rotating shaft, and one end of the oil block may radially overlap a shaft support protrusion of the main frame. This can suppress oil returned after lubricating a compression unit from being scattered, thereby reducing a leakage of the oil to outside of a casing through a refrigerant discharge pipe.

Thrust bearing for turbo compressor

Scroll compressor

A scroll compressor includes a casing, a main frame, a rotating shaft, an orbiting scroll, a fixed scroll configured to engage the orbiting scroll to form a compression chamber, and an Oldham ring slidably coupled to the orbiting scroll to prevent rotation of the orbiting scroll. The Oldham ring includes: a ring body provided between the main frame and the orbiting scroll to be supported in an axial direction of the rotating shaft, and a key portion extending in the axial direction from the ring body and slidably inserted into a key accommodating portion provided in the orbiting scroll, the main frame, or the fixed scroll. The ring body or the key portion includes an oil supply passage for guiding oil accumulated in a member on which the ring body is supported to between the key portion and the key accommodating portion.

Thrust bearing for turbo compressor

Disclosed herein is a thrust bearing for a turbo compressor, the thrust bearing has a structure that is modified in response to a portion where a deformation amount of a thrust runner is relatively large on the basis of magnitude of a force applied at the time of rotation of a shaft of a turbo compressor, to maintain a thickness of an oil film constantly and to increase a load supporting force of the thrust bearing, thereby ensuring improved durability of the thrust bearing.

Vane rotary compressor

A vane rotary compressor according to the present invention includes: a cylinder, a main bearing and a sub bearing coupled to the cylinder and provided with a back pressure pocket formed on a surface facing the cylinder, a rotation shaft radially supported by the main bearing and the sub bearing, a roller provided with a plurality of vane slots formed along a circumferential direction and each having one end opened toward an outer circumferential surface, and back pressure chambers each formed in another end of the vane slot so as to communicate with the back pressure pocket, and a plurality of vanes slidably inserted into the vane slots of the roller and dividing a compression space into a plurality of compression chambers, wherein the back pressure pocket is divided into a plurality of pockets having different inner pressure along the circumferential direction, and wherein the plurality of pockets provided with bearing protrusion portions formed on an inner circumferential side facing an outer circumferential surface of the rotation shaft and forming radial bearing surfaces with respect to the outer circumferential surface of the rotation shaft.

Ölerkennungsgerät für einen kompressor und dasselbe umfassenden kompressor

Diese Erfindung bezieht sich auf ein Ölerkennungsgerät für einen Kompressor und einen Kompressor, wobei ein Gehäuse, in dem Öl empfangen ist, mehrere kapillare Röhren in einem inneren Raum des Gehäuses aufweist, und eine Eigenschaft des Öls auf der Grundlage eines Ergebnisses einer Druckmessung von den mehreren kapillaren Röhren erkannt ist.

Scroll compressor

Scroll compressor including a casing having an oil storage space (S1), a main frame, a rotational shaft (125), an orbiting scroll (150), a fixed scroll (140), and an oil supply guide (171,172) communicating with an oil supply hole (1255) to guide oil in the oil storage space to a thrust bearing surface between the orbiting scroll (150) and the fixed scroll (140), wherein the oil supply guide (171, 172) comprises:a first oil supply guide (171) disposed in the orbiting scroll (150), and in communication with the oil supply hole (1255) of the rotational shaft (125); anda second oil supply guide (172) disposed in at least one of the orbiting scroll (150) or the fixed scroll (140) and that extends along the thrust bearing surface (B1, B2) such that the first oil supply guide (171) is in communication with a compression chamber (V1, V2) having pressure lower than a pressure in the oil storage space (S1).

Scroll compressor

A scroll compressor is provided that may include a casing, a main frame, a rotational shaft, an orbiting scroll, a fixed scroll, and an oil supply guide. A second oil supply guide of the oil supply guide may be disposed in at least one of the orbiting scroll or the fixed scroll and extend along a thrust bearing surface between the orbiting scroll and the fixed scroll to provide communication between a first oil supply guide and a compression chamber having a lower pressure than an oil storage space. This may produce a great pressure difference between ends of an oil supply passage including the first oil supply guide and the second oil supply guide, and allow smooth oil supply using differential pressure to the thrust bearing surface between the fixed scroll and the orbiting scroll.