| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 062296000 | MUFFLER OR SOUND DAMPENER | 35 |
| 20080314063 | Combined Muffler and Oil Separator for Refrigerant System - A refrigerant system ( | 12-25-2008 |
| 20090038329 | SUCTION MUFFLER FOR A REFRIGERATION COMPRESSOR - A suction muffler for a refrigeration compressor, comprising a hollow body defining at least one dampening chamber that carries a gas inlet duct and a gas outlet duct presenting an inlet opening and an outlet opening, for communicating the interior and the exterior of the dampening chamber, at least one of the gas inlet and gas outlet ducts presenting at least one closed end, one of the inlet and outlet openings being positioned at a certain distance from said closed end, smaller than the distance of said opening in relation to the other opening of the same duct and in a region of the latter presenting a minimum acoustic pressure for a determined frequency, the dimensioning of said duct and of the cross section of the first of said openings being achieved so as to minimize the gas pulsation noises inside the suction muffler. | 02-12-2009 |
| 20100024460 | REFRIGERATOR WITH AN ICE MAKER - A refrigerator s provided that includes a cooling chamber and an ice maker arranged in the cooling chamber. The ice maker is equipped with an ice container for accommodating the prepared ice. The ice container has a water-draining surface configured for draining water from the prepared ice. | 02-04-2010 |
| 20100132393 | AIR CONDITIONER - Provided is an indoor unit of an air conditioner. The structures of the indoor unit, such as the relationship between an inlet and an outlet, the shape of a rear guide, and the relationship between the outlet and a vane, are improved. Therefore, the airflow of the indoor unit is stable, and the noise level of the indoor unit is low. | 06-03-2010 |
| 20100175409 | AIR CONDITIONING APPARATUS - An air conditioning apparatus is provided whereby the pressure pulsation generated by a compressor can be entirely reduced both during cooling and during heating, and a muffler can be shared. The air conditioning apparatus has a refrigerant circuit. The refrigerant circuit is configured so that a compressor for compressing a refrigerant, an indoor heat exchanger, an outdoor heat exchanger, and a four-way switch valve are connected via a refrigerant pipe. The four-way switch valve switches the flow of refrigerant compressed by the compressor to either the indoor heat exchanger or the outdoor heat exchanger. The air conditioning apparatus further includes a pressure pulsation reducing component. The pressure pulsation reducing component is provided between the four-way switch valve and the indoor heat exchanger. The pressure pulsation reducing component reduces pressure pulsation inside the refrigerant circuit. The pressure pulsation is generated by the compressor. | 07-15-2010 |
| 20100175410 | REFRIGERATOR WITH NOISE REDUCTION STRUCTURE USING INVERSE PHASE SOUND WAVE - Disclosed is a refrigerator having a noise reduction structure. According to the refrigerator, a branch pipe for reducing the intensive noise occurring from an impeller part is provided to a discharge pipe connected so that the refrigerant is discharged in a direction of a condenser from the impeller part. Therefore, the traveling sound wave of the noise traveling along the discharge pipe and the reverse sound wave traveling toward the branch pipe provided to the outer periphery of the discharge pipe meet each other, so that the both sound waves are cancelled to reduce the noise. | 07-15-2010 |
| 20100175411 | AIR CONDITIONER - An air conditioner includes a cabinet configured to define an outer appearance of the air conditioner. The air conditioner also includes a front panel coupled to the cabinet and having an intake hole. The air conditioner further includes a fan assembly positioned within the cabinet and configured to guide a flow of air in the cabinet. The air conditioner further includes an intake panel configured to move to open or close the intake hole in response to a control signal. In addition, the air conditioner includes at least one noise reducing part positioned in the intake panel and configured to reduce a noise having at least one frequency bandwidth. | 07-15-2010 |
| 20100218536 | Screw Compressor Economizer Pulsation Reduction - A compressor has a suction port, a discharge port, and an economizer port. A condenser is downstream of the discharge port. An evaporator is upstream of the suction port. An expansion device is between the condenser and the evaporator. An economizer is between the condenser and the evaporator. An economizer line extends from the economizer to the economizer port. A resonator is located in the economizer line and has a first branch and a second branch. A first flowpath length across the resonator through the second branch is longer than a second flowpath length across the resonator through the first branch. | 09-02-2010 |
| 20100242522 | REFRIGERATION SYSTEM - A refrigeration system includes a first refrigerant passage, a π-type silencer, and a second refrigerant passage. The π-type silencer has a first silencing space, a second silencing space, and a communication path. The first silencing space communicates with the first refrigerant passage. The second silencing space is disposed below the first silencing space. The communication path extends from the lower end of the first silencing space to the outside of the first silencing space and communicates with the second silencing space. The second refrigerant passage extends from the lower end of the second silencing space. | 09-30-2010 |
| 20100275632 | REFRIGERATION SYSTEM - A refrigeration system includes a compression mechanism, a radiator, an expansion mechanism, an evaporator and a π-type silencer | 11-04-2010 |
| 20110000243 | SPLIT DISCHARGE LINE WITH INTEGRATED MUFFLER FOR A COMPRESSOR - A discharge pipe for connecting a compressor with a condenser in a vapor-compression system comprises an intake segment, a muffler, a splitter segment and first and second discharge segments. The intake segment is configured to connect to a discharge port of the compressor and receive compressed refrigerant flow. The muffler is connected to the intake segment for attenuating pulsations within the compressed refrigerant flow. The splitter segment is connected to the muffler and configured to divide the compressed refrigerant flow into first and second branches. The first discharge segment connects to the splitter to receive the first branch and is configured to connect to the condenser at a first position. The second discharge segment connects to the splitter to receive the second branch and is configured to connect to the condenser at a second location | 01-06-2011 |
| 20110126574 | REFRIGERATOR AND/OR FREEZER - The within invention relates to a refrigerating and/or freezing device with at least one coolant circuit that has at least one condenser, where at least one absorber is provided that is located such that it diminishes or prevents the transfer of oscillations from the condenser to other parts of the refrigerating and/or freezing device and/or oscillations from the condenser itself. | 06-02-2011 |
| 20110146320 | Vehicular refrigeration cycle apparatus - A vehicular refrigeration cycle apparatus where, at the time of startup before starting the operation of a compressor, the speed of a condenser-use blower which blows outside air toward the condenser is increased in accordance with the air-conditioning load. Due to this, the operating noise of the condenser-use blower familiar to the users becomes masking noise helping to prevent the operating noise of the compressor from being heard by the user and the unfamiliar operating noise of the compressor can be kept from being heard by the user. | 06-23-2011 |
| 20110197615 | VEHICLE AIR CONDITIONING UNIT - A vehicle air conditioning unit includes: a slide door which controls an opening ratio of an opening allowing an air stream to flow therethrough; a deflection suppressing portion which suppresses a deflection of the slide door by pressing the slide door; and a vibration suppressing portion which suppresses the amplitude of a vibration of the slide door generated when the slide door is exposed to the air stream. | 08-18-2011 |
| 20110197616 | HEAT PUMP APPARATUS - A heat pump apparatus that can easily prevent noise generated during partial-load operation is provided. The heat pump apparatus includes a centrifugal compressor configured to compress a refrigerant; a condenser configured to condense the compressed refrigerant; an expansion valve configured to adiabatically expand the condensed refrigerant; an evaporator configured to vaporize the adiabatically-expanded refrigerant; a container into which the vaporized refrigerant flows and from which the refrigerant that flowed in flows out to the centrifugal compressor; a sound-insulating member configured to cover the container and prevent sound generated inside the container from leaking outside; a bypass channel configured to guide part of the refrigerant from an area between the centrifugal compressor and the condenser to the container; and a flow control valve configured to control the flow rate of the refrigerant flowing through the bypass channel. | 08-18-2011 |
| 20120011875 | Refrigerator - A refrigerator which includes an outer case defining the outer appearance of the refrigerator, the inner case received in the outer case and defining a storage compartment, the insulation member filled in a gap between the outer case and the inner case for heat insulation, and a noise attenuation member disposed between an outer surface of the inner case and the insulation member to induce a sliding movement between the inner case and the insulation member. The insulation member is slidable relative to the insulation member when the inner case expands or contracts in accordance with a variation of temperature, whereby the generation of frictional noise due to friction between the inner case and the insulation member can be greatly reduced. | 01-19-2012 |
| 20120011876 | DISCHARGE MUFFLER AND TWO-STAGE COMPRESSOR INCLUDING THE SAME - A discharge muffler includes a muffler container. In the muffler container, refrigerating machine oil is separated from refrigerant gas containing the refrigerating machine oil, and the refrigerating machine oil is stored in a lower space. An inlet of an outlet pipe connected to the muffler container opens in the lower space. | 01-19-2012 |
| 20120085118 | REFRIGERANT COMPRESSOR AND HEAT PUMP APPARATUS - A refrigerant compressor that enhances compressor efficiency by both reducing an amplitude of pressure pulsations and reducing pressure losses in a discharge muffler space into which is discharged a refrigerant compressed at a compression unit. A low-stage discharge muffler space is formed in the shape of a ring around a drive shaft. In the low-stage discharge muffler space, a discharge port rear guide is provided in the proximity of a discharge port through which is discharged the refrigerant compressed by a low-stage compression unit. The discharge port rear guide is provided at a flow path in one direction out of two flow paths from the discharge port to a communication port in different directions around the drive shaft, and prevents the refrigerant from flowing in that direction, thereby causing the refrigerant to circulate in a forward direction in the ring-shaped discharge muffler space. | 04-12-2012 |
| 20120085119 | REFRIGERANT COMPRESSOR AND HEAT PUMP APPARATUS - A device that enhances compressor efficiency by reducing pressure losses in a discharge muffler space into which is discharged a refrigerant compressed by a compression unit. A low-stage discharge muffler space is formed in the shape of a ring around a drive shaft. In the low-stage discharge muffler space, a communication port flow guide is provided so as to cover a predetermined area of an opening of a communication port from a side of a flow path in a reverse direction out of two flow paths in different directions around the drive shaft from a discharge port through which is discharged the refrigerant compressed by a low-stage compression unit to the communication port through which the refrigerant flows out. The communication port flow guide transforms a direction of a flow into a direction of a connecting flow path. | 04-12-2012 |
| 20120118000 | REFRIGERATOR - The present invention provides a refrigerator which enable to make effective arrangement elements in a machine room on a top of the refrigerator, and to absorb and cut off noise and vibration from the elements enabling quiet operation. To do this, the refrigerator includes a body formed to have a freezing chamber and a refrigerating chamber, a machine room formed on a top of the body to have a front region and a rear region, and a vibration isolating member for attenuating vibration in the machine room. | 05-17-2012 |
| 20120167608 | OUTDOOR UNIT FOR AIR CONDITIONER - An outdoor for an air conditioner according to the exemplary embodiment of the present invention includes: a casing; a compressor installed in the casing and compressing refrigerant; an accumulator installed in the casing and separating liquid refrigerant from refrigerant that flows into the compressor; and a soundproof member absorbing or insulating noise generated while the compressor operates and placed to at least surround the compressor, wherein the soundproof member includes: a first soundproof member absorbing or insulating noise by forming an outer surface of the soundproof member; and a second soundproof member provided in the first soundproof member and absorbing noise in a relatively lower-frequency band than the first soundproof member. | 07-05-2012 |
| 20120279245 | COMPACT DISCHARGE DEVICE FOR THE REFRIGERATION COMPRESSOR OF AN APPLIANCE - A discharge device for a refrigeration compressor is provided. The device can include a discharge tube connected with the discharge of the refrigeration compressor. A bellows surrounds a perforated portion of the discharge tube. The length of the discharge tube can be minimized to decrease pressure loss. The discharge can be insulated to prevent the distribution of heat to the compressor and/or to allow for the recovery of heat energy later in the refrigeration cycle. | 11-08-2012 |
| 20130283841 | Heat Exchanger for an Air Conditioning System - An internal heat exchanger for an air conditioning system, having: a high pressure side through which a coolant under high pressure flows in operation; and a low pressure side through which coolant under low pressure flows in operation. The heat exchanger is configured in such a way that pulsations of the coolant flowing therethrough dampen noise. | 10-31-2013 |
| 20140216094 | OUTDOOR UNIT - An outdoor unit includes: a compressor, and a sound deadening material having sound deadening properties. The sound deadening material includes a first sound absorbing material made of glass fibers, a first scatter prevention member which prevents scattering of the glass fiber from one principal surface of the first sound absorbing material by covering the one principal surface, and a second scatter prevention member which prevents scattering of the glass fiber from the other the other principal surface of the first sound absorbing material by covering the other principal surface. The first scatter prevention member is a sound absorbing material made of fibers having high fiber strength than the glass fibers. The second scatter prevention member is a sound insulating material. The sound deadening material is wound around the compressor so that the first scatter prevention member faces the compressor. | 08-07-2014 |
| 20140250937 | HERMETIC-TYPE COMPRESSOR AND REFRIDGERATION CYCLE APPARATUS - A compression mechanism portion housed in a closed case is provided with a partition plate located between a first cylinder and a second cylinder. The compression mechanism includes a first bearing discharge port formed to a first bearing and a first partition plate discharge port formed to the partition plate as discharge ports for discharging working fluid compressed in a first cylinder chamber, and also includes, as discharge port for discharging working fluid compressed in a second cylinder chamber, a second bearing discharge port formed to a second bearing and a second partition plate discharge port formed to the partition plate. A cross-sectional area of the first partition plate discharge port is formed to be smaller than a cross-sectional area of the first bearing discharge port, and a cross-sectional area of the second partition plate discharge port is formed to be smaller than a cross-sectional area of the second bearing discharge port. | 09-11-2014 |
| 20150033785 | COMPRESSOR NOISE SUPPRESSING STRUCTURE AND DEHUMIDIFIER HAVING THE SAME - There are provided a compressor noise suppressing structure and a dehumidifier having the same. The compressor noise suppressing structure includes an installation member fixed to a base frame to support and accommodate a component installed within a housing, and a noise-proof member extending from the installation member to cover at least one side of the compressor to block noise from the compressor. According to the compressor noise suppressing structure, noise generated when the compressor is operated is simultaneously blocked by the nose-proof member and the housing, and the installation member and the noise-proof member are configured as a single component, improving assembly characteristics and simplifying a fabrication process. | 02-05-2015 |
| 20150047383 | STRUCTURE FOR FIXING COMPRESSOR FOR DEHUMIDIFIER - There is provided a compressor fixing structure capable of preventing vibrations from a compressor from being spread to the entirety of a product in which the compressor is installed. The compressor fixing structure includes: a plurality of support units disposed to have a polygonal structure and protruded from a bottom surface; a support unit anti-vibration rib protruded from a perimeter of each of the plurality of support units; and an outer anti-vibration rib surrounding the entirety of the plurality of support units and protruded from a bottom surface. Spreading of vibrations from a compressor installed in a product is minimized, reducing vibrations and noise generated by the compressor when the compressor is driven. | 02-19-2015 |
| 20150369514 | Adjustable Noise Attenuation Device for Use in Blow Through Air Handler/Furnace with Mixed Flow Blower Wheel - An HVAC system comprises an air flow path, a heat exchanger in the air flow path, a blower in the air flow path to move air through the heat exchanger, and at least one Helmholtz resonator in the air flow path. The Helmholtz resonator may be placed in numerous places throughout the air flow path. The Helmholtz resonator may be adjustable. The Helmholtz resonator further may be automatically adjustable. The automatic adjustment may be based on a characteristic of at least one of the blower or the air in the air flow path. Characteristics of air moving through the air flow path may include airspeed, absolute pressure, a pressure change through a portion of the HVAC system, or an audio characteristic. The automatic adjustment may be based on a feedback pressure or an electrical signal from a sensor. The system may have multiple Helmholtz resonators. | 12-24-2015 |
| 20160084521 | SILENCER FOR A VEHICLE AIR CONDITIONING SYSTEM - A silencer for a vehicle air conditioning system is designed to reduce a noise and a vibration of a compressor transmitted into a vehicle room along coolant pipes. The silencer includes a silencer body tube and an external resonance tube. The silencer body tube is installed between the coolant pipes wherein a coolant gas flowing along the coolant pipes passes through the silencer body tube, the silencer body tube including one or more resonance holes formed on an outer circumferential surface of the silencer body tube. The external resonance tube is installed on the outer circumferential surface of the silencer body tube wherein a resonance chamber for absorbing a vibration and a noise of a coolant gas flowing through the silencer body tube is defined between the outer circumferential surface of the silencer body tube and the external resonance tube. | 03-24-2016 |
| 20160114648 | VEHICLE AIR CONDITIONING APPARATUS - A vehicle air conditioning apparatus in which a noise caused by burble is reduced is provided. The vehicle air conditioning apparatus includes: a case having an air channel in an interior thereof; a blower configured to supply blown air to the air channel, the case includes a cylindrical portion and an enlarged portion continued from the cylindrical portion on a downstream side and having a cross-sectional area larger than a cross-sectional area of the cylindrical portion, the enlarged portion includes a projecting wall having a wall surface projecting outward of the air channel, the projecting wall includes at least one projection projecting inward of the air channel, and a top portion of the projection is in contact with a side surface of an virtual cylinder, which is formed by extending the inner wall surface of the cylindrical portion in the virtually extended toward the downstream, or is provided on the projecting wall side with respect to the side surface of the virtual cylinder. | 04-28-2016 |
| 20160146224 | IMPROVED FAN ASSEMBLY FOR A REFRIGERATION APPLIANCE - The present invention relates a fan assembly ( | 05-26-2016 |
| 20160195318 | EXPANSION APPARATUS AND REFRIGERANT CYCLE OF VEHICLE AIR CONDITIONER USING THE SAME | 07-07-2016 |
| 20160201973 | COMPRESSOR MOUNTING BASE PLATE | 07-14-2016 |
| 20170234552 | MUFFLER FOR AIR-CONDITIONING APPARATUS AND AIR-CONDITIONING APPARATUS INCLUDING THE SAME | 08-17-2017 |
| 20190145680 | ONE METHOD TO MITIGATE VIBRATION AND SOUND LEVEL IN HEAT PUMP CHILLER WITH EVI FUNCTION | 05-16-2019 |
