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| Number | Title | Issue Date |
| 8186179 | Expander-compressor unit An the expander-compressor unit (100) includes a closed casing (1) in which an oil can be stored in its bottom part, a compression mechanism (2) disposed in an upper part of the closed casing (1), an expansion mechanism (3) dispose... | 05/29/2012 |
| 8181478 | Refrigeration system A refrigeration system can incorporate a liquid-injection system that can provide a cooling liquid to an intermediate-pressure location of the compressor. The cooling liquid can absorb the heat of compression during the compression of the refrigerant flowing thereth... | 05/22/2012 |
| 8127567 | Shaft coupling and arrangement for fluid machine and refrigeration cycle apparatus An oil supply passage (68) is formed inside a rotating shaft (56) of a compression mechanism (21). An oil supply passage (38) is formed inside a rotating shaft (36) of an expansion mechanism (22). A boss portion (81) ... | 03/06/2012 |
| 8122735 | Refrigerating apparatus A refrigerant circuit (11) of an air conditioner (10) includes a compressor (20) and an expander (30). In the compressor (20), refrigerator oil is supplied from an oil reservoir (27) to a compression mechanism (21). I... | 02/28/2012 |
| 8109116 | Dual compressor air conditioning system with oil level regulation A refrigeration air conditioner includes a first equalizer pipe connecting a bottom portion of a first hermetic vessel, which contains a main compression mechanism and lubricating oil, to a bottom portion of a second hermetic vessel, which contains an expansion mech... | 02/07/2012 |
| 8104307 | Expander-integrated compressor and refrigeration-cycle apparatus with the same An expander-integrated compressor (5A) has a compression mechanism (21) for compressing a refrigerant and an expansion mechanism (22) for expanding the refrigerant. The compression mechanism (21) is located above the expansion mechanism (... | 01/31/2012 |
| 8082751 | DX system with filtered suction line, low superheat, and oil provisions A heating/cooling system has improved operating efficiencies due to low superheat provisions and a specially configured compressor oil return. For certain systems, such as direct exchange geothermal heating/cooling applications having sub-surface heat exchanges exte... | 12/27/2011 |
| 8033135 | Rotary-type fluid machine and refrigeration cycle apparatus A rotary-type fluid machine (10A) includes: a closed casing (1) having a bottom portion utilized as an oil reservoir, a rotary-type fluid mechanism (expansion mechanism) (15) that is provided in an upper portion of the closed casing (1) a... | 10/11/2011 |
| 8006514 | Refrigerating device In a refrigerating device comprising: a compressor that is driven by a motor; a refrigerant circulation flow passage that includes an oil separator/collector, a condenser, an expansion valve, and an evaporator; and an oil flow passage that conducts oil in the oil se... | 08/30/2011 |
| 7823413 | Distributed condensing units A system includes an evaporator unit, a first condensing unit and a second condensing unit. The first condensing unit includes a first heat exchanger coil, a first compressor, and a first oil separator, which removes oil from a refrigerant prior to the refrigerant r... | 11/02/2010 |
| 7422423 | Refrigerant compressor, and refrigerating machine using the same A refrigerant compressor includes a compressor section, driver, a first contact section and a second contact section. The compressor section is accommodated in a closed container for compressing refrigerant gas. The driver drives the compressor section. The first an... | 09/09/2008 |
| 7404701 | Refrigerating system having reciprocating compressor A refrigerating system includes: an evaporator (2) for performing a cooling operation as a refrigerant is evaporated; a compressor (4) for compressing the refrigerant discharged from the evaporator as a mover is reciprocally moved; a condenser (86 | 07/29/2008 |
| 7356998 | Flash tank of two-stage compression heat pump system for heating and cooling Disclosed herein is a flash tank of a two-stage compression heat pump system that can perform cooling and heating with a separate type intercooler and a high-stage compressor protecting device. The system comprises a fluid-level detecting sensor for detecting the fl... | 04/15/2008 |
| 7347061 | Oil checking device for compressor of air conditioning system An oil checking device for compressor of air conditioning system includes an oil container connected to an high-pressure part of the air conditioning system to receive refrigerant and oil from the high-pressure part, the oil container being formed of a transparent m... | 03/25/2008 |
| 7316291 | Suction 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 |
| 7302807 | Refrigerating cycle device In a refrigerating cycle device using carbon dioxide as a refrigerant, there exists a problem that the provision of a receiver at a low-pressure side increases cost and volume due to a pressure resistance design necessary for ensuring safety. By adjusting a refriger... | 12/04/2007 |
| 7296435 | Refrigerating system having reciprocating compressor A refrigerating system includes: an evaporator (2) for performing a cooling operation as a refrigerant is evaporated; a compressor (4) for compressing the refrigerant discharged from the evaporator as a mover is reciprocally moved; a condenser (6 | 11/20/2007 |
| 7296423 | Composition and methods for injection of sealants into air conditioning and refrigeration systems The use of sealants based on organosilanes for refrigeration and air conditioning systems is made possible by control of the rate of introduction and viscosity of the sealant mixture within certain ranges. An appropriate choice of organosilane sealant is made to all... | 11/20/2007 |
| 7296436 | Cryorefrigerator contaminant removal Disclosed is a method of removing contaminants from a GM type cryogenic refrigerator that incorporates an oil lubricated compressor where such contaminants are introduced during servicing the refrigerator where at least some of the oil is replaced with clean oil. | 11/20/2007 |
| 7278833 | Hybrid compressor A hybrid compressor includes a first compression mechanism, which is driven by a first drive source, a second compression mechanism, which is driven by a second drive source, and a communication path communicating between a suction chamber of the first compression m... | 10/09/2007 |
| 7272953 | Method and apparatus for separating and neutralizing ammonia The present invention is a method and apparatus to provide for the safe and effective removal and neutralization of ammonia from a stream of waste oil or other liquid. The apparatus consists of a receiving tank, a treatment tank, circulation piping, associated contr... | 09/25/2007 |
| 7231783 | Oil control system for a refrigeration system A refrigeration system includes a compressor having a compressor housing and operable to compress a flow of refrigerant. A pump is operable to provide a flow of oil to the compressor. A portion of the oil mixes with the flow of refrigerant and the remainder of the o... | 06/19/2007 |
| 7222491 | Air conditioner and method for performing oil equalizing operation in the air conditioner An air conditioner including an outdoor unit including a first compressor and a second compressor connected in parallel to the first compressor, an outdoor unit connected in parallel to the outdoor unit, the outdoor unit including a first compressor and a second com... | 05/29/2007 |
| 7216494 | Supermarket refrigeration system and associated methods A supermarket refrigeration system may include a plurality of supermarket refrigeration cases, each including an evaporator and an associated compressor connected downstream therefrom. A common condenser is connected downstream from the compressors, and a receiver i... | 05/15/2007 |
| 7216777 | Liquid dispensing system using color-coded visual indicia A liquid dispensing system and methods including color-coded visual indicia to assist an operator in the proper selection of the components and in the configuration of those components in the system during setup, maintenance and diagnostics. Color-coded indicia is a... | 05/15/2007 |
| 7210912 | Reciprocating 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 |
| 7204098 | Oil separation structure for refrigerant compressor The present invention relates to a structure for separating oil from a refrigerant gas containing the oil. The refrigerant gas is discharged from a refrigerant compressor which forms a part of refrigerating cycle to an external refrigerant circuit. The oil separatio... | 04/17/2007 |
| 7186095 | Compressor mounting bracket and method of making A mounting bracket for a compressor. The mounting bracket includes a mounting member and an elongate bracing member. The mounting member is secured to the housing of the compressor has a central support section in substantial registry with the housing. The mounting ... | 03/06/2007 |
| 7186099 | Inclined scroll machine having a special oil sump A scroll-type compressor is provided in an inclined or inverted position with an oil sump disposed adjacent to a gas inlet of the scroll wraps to allow droplets of oil to be entrained in the gas being compressed so that the oil droplets in the gas can cool the scrol... | 03/06/2007 |
| 7181926 | Oil 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 |
| 7178347 | Method for refrigerant and oil collecting operation and refrigerant and oil collection controller A method for refrigerant and oil collecting operation capable of assuring the cleanliness of the inside of an existing communication pipe at a low cost and installing, at a low cost, a new air conditioner, comprising a compressor (1), a heat source side heat ... | 02/20/2007 |
| 7165420 | Apparatus for converting refrigerant pipe of air conditioner An apparatus for converting a refrigerant pipe of an air conditioner comprises: a valve housing installed at a position where respective refrigerant discharge pipes of plural compressors are put together, having a valve space portion therein, and having a first refr... | 01/23/2007 |
| 7165419 | Apparatus for converting refrigerant pipe of air conditioner An apparatus for converting a refrigerant pipe of an air conditioner comprises: a valve housing installed at a position where respective refrigerant discharge pipes of plural compressors are put together, having a valve space portion therein, and composed of a first... | 01/23/2007 |
| 7163383 | Compressor 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 |
| 7137265 | Apparatus and method for controlling oil of air conditioner An apparatus and a method for controlling oil of a multi-compressor installed in an air conditioner includes a microcomputer for sequentially stopping compressors installed in the air conditioner for a preset time and then sequentially operating the compressors when... | 11/21/2006 |
| 7097435 | Device for draining and recharging a hermetic compressor with oil A method of draining and recharging a hermetic compressor with oil using a drainage assembly mounted in the compressor housing. The assembly includes a tube having a valve mounted at one end thereof with the second end of the tube located in the oil sump of the hous... | 08/29/2006 |
| 7086238 | Oil separator with bi-directional valve mechanism for use with a refrigerant recycling machine An automotive air conditioning refrigerant recycling system incorporates an improved upstream oil separator that removes virtually all contaminating lubricants from a refrigerant stream before the refrigerant is delivered to sensitive downstream components of the re... | 08/08/2006 |
| 7032789 | Solenoid using color-coded visual indicia in a liquid dispensing system A liquid dispensing system and methods including color-coded visual indicia to assist an operator in the proper selection of the components and in the configuration of those components in the system during setup, maintenance and diagnostics. Color-coded indicia is a... | 04/25/2006 |
| 7018558 | Method of improving performance of refrigerant systems A method of improving performance of refrigerant systems such as refrigerators and air conditioners that utilize a refrigerant working fluid. The working fluid consists essentially of a heat transfer fluid and a lubricant that is miscible and is otherwise compatible... | 03/28/2006 |
| 7007503 | Oil equalizing system for multiple compressors An oil equalizing system for multiple compressors which does not require a particular machining process for shells of the compressors, thereby being capable of preventing an increase in costs, while maintaining oil in each compressor in a proper amount. In a refrige... | 03/07/2006 |
