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Class 62/296 - MUFFLER OR SOUND DAMPENER


Subclass of Class 62 - Refrigeration
Definition: Apparatus including a device for attenuating sound.
No. of patents: 174
Last issue date: 02/28/2012


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NumberTitleIssue Date
8122732Refrigerator 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 directi...
02/28/2012
7849705Noise reduction device and air conditioner having the same
An air conditioning system, comprising: a channel to carry a flow of refrigerant, and a first noise reducer to change at least one property of the refrigerant as the refrigerant flows through the channel. ...
12/14/2010
7431571Noise reduction muffler for hermetic rotary compressor
A muffler for a hermetic rotary compressor including a muffler body forming a plurality of noise reducing spaces in which refrigerant gas flows; a discharge port formed on the muffler body so as to be located on the nose reducing spaces side; and a guide cover coupl...
10/07/2008
7373788Expansion valve
An expansion valve includes a valve body having a valve body hole, a first passage, a bottomed valve chamber, a second passage, a third passage and a guide member disposed in the valve body hole between the first passage and the third passage. The valve body hole ha...
05/20/2008
7357219Sound attenuating cover for domestic air conditioner compressors
A sound attenuating cover is adapted for intimate fitment to a compressor of a domestic air conditioner, and comprises an outer sleeve member and a generally circular top member which is releasably secured to the outer sleeve member. Hook and loop fasteners secure a...
04/15/2008
7328586Repositionable attenuator
A repositionable attenuator for a terminal unit in a heating, ventilation, and air conditioning system is disclosed. The attenuator is positionable between at least a first and a second position. This enables the attenuator to be attached to and shipped with the ter...
02/12/2008
7328592Circuit for the generation of cold or heat
A circuit for the generation of cold or heat comprising a compressor, an evaporator, a condenser and a restriction member made as a separate component and having a fixed throughflow cross-section, with the restriction member being inserted directly between two eleme...
02/12/2008
7316291Suction muffler for a hermetic refrigerant compressor
The invention concerns a suction muffler for a hermetic refrigerant compressor with a housing having an inlet and an outlet and limiting at least one muffling chamber, and a gas supply channel located in the muffling chamber between the inlet and the outlet. It is e...
01/08/2008
7310965Compressor head, internal discriminator, external discriminator, manifold design for refrigeration recovery apparatus
The compressor head, internal and/or external discriminator, and manifold design in general utilize ball valves on the suction and discharge of a cylinder head in the recovery of refrigerant liquid and/or vapor. The device facilitates the flashing of liquid refriger...
12/25/2007
7290994Rotary hermetic compressor and refrigeration cycle system
A vane of a first cylinder is compressed and urged by a spring member. A vane of a second cylinder is compressed and urged corresponding to a differential pressure between an intra-casing pressure guided into a vane chamber and a suction pressure or discharge pressu...
11/06/2007
7287581Full function vehicle HVAC/PTC thermal system
The integrated automotive HVAC/PTC system of the present invention includes a bi-fluidic heat exchanger between an air conditioning subsystem and a heating subsystem which enables heat extracted during dehumidification of the ventilation air to be transferred into d...
10/30/2007
7278834Compressor assemblies with improved mounting support and method of mounting such compressor assemblies
A compressor assembly including a housing, a motor operatively linked to a compressor mechanism, a support structure, and a sheet of closed cell foam material. The motor and compressor mechanism are disposed within the housing. The housing, motor, and compressor mec...
10/09/2007
7278279Refrigerator
A heat insulating box of a refrigerator includes a non-flammable heat-insulator particularly a vacuum heat-insulator made of a board-shape molded inorganic fiber. Therewith non-flammability of the heat insulator is ensured and a refrigerator box prevented from catch...
10/09/2007
7278514Acoustic noise filter
An acoustic filter is provided with a single flow chamber for exposure of a flexible rubber layer to liquid undergoing flow through the flow chamber with noise producing acoustic energy therein. The flexible rubber layer is supported on a cylindrical drum with slant...
10/09/2007
7272234Multi-channel active control system and method for the reduction of tonal noise from an axial fan
A multi-channel active noise control system and method of reducing tonal noise emanating from a tonal noise source are disclosed. The system may include an adaptive controller, a plurality of loudspeakers driven by the loudspeaker, one or more microphones for genera...
09/18/2007
7263851Refrigerator
A refrigerator comprises: a body having a storage chamber and a mechanical chamber; a base plate arranged in the mechanical chamber without a direct contact with the body, and having a compressor; a first supporting member coupled to the body and supporting the body...
09/04/2007
7261242Sound insulation for electric relay
An electric unit, such as a room thermostat has a circuit board and an electromechanical switch mounted to the circuit board. The circuit board and the electromechanical switch are housed in a casing. The casing is filled with a sound insulation material with the el...
08/28/2007
7257961Vibration reduction type refrigerator
Disclosed is a vibration reduction type refrigerator including a refrigerator main body having a cooling chamber for storing foods and a mechanical chamber, a compressor disposed in the mechanical chamber, for compressing refrigerants, and a suction pipe connected t...
08/21/2007
7251947Refrigerant system with suction line restrictor for capacity correction
A fixed restriction is placed in a suction line leading to a compressor. The size of the restriction is selected to achieve a desired capacity reduction (correction) for the refrigerant system compressor. By selectively restricting the flow of refrigerant through th...
08/07/2007
7244108Hermetic compressor with an improved cylinder head-suction muffler assembly
This invention relates to a hermetic compressor used on a refrigerant cycle such as a refrigerator, and discloses a low noise compressor designed to attenuate a resonance sound in a compression chamber and intake pressure pulsing more operatively at a position adjac...
07/17/2007
7228935Attachment pin for an exhaust-gas muffler
The invention relates to an attachment pin (1) for fixing an exhaust-gas muffler (2) in an apparatus part (4) of a portable handheld work apparatus (5) driven by an internal combustion engine. The exhaust-gas muffler (2) includes e...
06/12/2007
7210912Reciprocating piston compressor having improved noise attenuation
A reciprocating piston compressor having a suction muffler and a pair of discharge mufflers to attenuate noise created by the primary pumping frequency in the primary pumping pulse. The suction muffler is disposed along a suction tube extending between the motor cap...
05/01/2007
7201011Integrated noise and heat management system
An integrated noise and heat management system for the management of noise and heat around a heat and noise source is described. The system includes an enclosure for surrounding the heat and noise source, the enclosure having a double wall structure defining an air ...
04/10/2007
7181926Oil separator and muffler structure
An oil separator-muffler for a compressor includes an inner chamber with an oil accumulation region and a wall positioned in the inner chamber. The wall defines a separator region and has an impingement surface. The arrangement of the wall in the inner chamber defin...
02/27/2007
7174726Adjustable nozzle distributor
A distributor, for use in a refrigerant system for conveying refrigerant between an expansion device and an evaporator, having a longitudinal body, an actuator, a plug, a first nozzle, and a second nozzle. The longitudinal body having a first end, a second end, a lo...
02/13/2007
7163383Compressor having alignment bushings and assembly method
A compressor assembly including a compression mechanism having a main bearing and a plurality of first pilot holes, and an electric motor comprising a rotor disposed within a stator. The stator has a plurality of second and third pilot holes. Each of the first pilot...
01/16/2007
7159412Compressor head, internal discriminator, external discriminator, manifold design for refrigeration recovery apparatus
The compressor head, internal and/or external discriminator, and manifold design in general utilize ball valves on the suction and discharge of a cylinder head in the recovery of refrigerant liquid and/or vapor. The device facilitates the flashing of liquid refriger...
01/09/2007
7155929Piping structure for air conditioner
A piping structure of an air conditioner causes a looped main piping connected to a compressor of an outdoor unit of the air conditioner to be branched into two or more branch pipings within a predetermined interval of the main piping and cause the branch pipings to...
01/02/2007
7137268Vibration dampening device
A device is provided for dampening compressor-induced vibration in an air conditioning system of the type having an indoor unit, an outdoor unit and a refrigerant conduit therebetween. The outdoor unit includes a compressor that is operable to circulate a vapor comp...
11/21/2006
7131287Air conditioning system with vibration dampening device
A device is provided for dampening compressor-induced vibration in an air conditioning system of the type having an indoor unit, an outdoor unit and a refrigerant conduit therebetween. The outdoor unit includes a compressor that is operable to circulate a vapor comp...
11/07/2006
7124599Absorption pipe structure of compressor
An absorption pipe structure of a compressor, capable of reducing vibration of the absorption pipe and making the machinery room small-sized, by making short the length of the absorption pipe connected with the compressor and forming the curved part formed in a prop...
10/24/2006
7124595Multi-type air conditioner with plurality of distributor able to be shutoff
Multi-type air conditioner including an outdoor unit installed in an outdoor, including a compressor, a refrigerant flow controlling part connected to a discharge end of the compressor for guiding the refrigerant proper to operation conditions selectively, and an ou...
10/24/2006
7121814Compressor sound suppression
A compressor includes a housing and one or more working elements. A muffler is located downstream of the discharge plenum. A centerbody is located in the discharge plenum upstream of the muffler spanning a major portion of a length between a bearing case and the muf...
10/17/2006
7114348Fluid diode expansion device for heat pumps
An expansion device for the heat pump applications consists of a flow resistance device that has a different resistance to refrigerant flow depending on the flow direction through this device. The flow resistance device has no moving parts so that it avoids the dama...
10/03/2006
7114345Air circulation structure for a refrigerator machine room
A refrigerator which has a pleasant front appearance by improving a structure to circulate air through a machine room thereof, and which restrains a transmission of operational noise from an interior to an outside of the machine room, thus performing a silent operat...
10/03/2006
7073346Compressor head, internal discriminator, external discriminator, manifold design for refrigerant recovery apparatus and vacuum sensor
The compressor head, internal and/or external discriminator, and manifold design in general utilize ball valves on the suction and discharge of a cylinder head in the recovery of refrigerant liquid and/or vapor. The device facilitates the flashing of liquid refriger...
07/11/2006
7069741Economizer chamber for minimizing pressure pulsations
A baffle for use in a refrigerator apparatus comprises a baffle plate comprising a first and a second opposing sides attached to an inner surface of the refrigerator apparatus, a baffle seal plate attached along a third side of the baffle plate, the baffle plate sea...
07/04/2006
7059146Vehicle air conditioning apparatus
A vehicle air conditioning apparatus for a vehicle comprises an air conditioning unit for conditioning air in a passenger compartment of a vehicle. The air conditioning unit has an air conditioning case forming an air passage with at least one sidewall. The sidewall...
06/13/2006
7043937Fluid diode expansion device for heat pumps
An expansion device for the heat pump applications consists of a flow resistance device that has a different resistance to refrigerant flow depending on the flow direction through this device. The flow resistance device has no moving parts so that it avoids the dama...
05/16/2006
7036328Air conditioner
An air conditioner which includes a plurality of indoor units to cool air of a plurality of rooms. Included is a plurality of branch refrigerant lines that each include a backflow prevention part provided at an end of the branch refrigerant line and/or a pulsation d...
05/02/2006
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