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| Number | Title | Issue Date |
| 7966838 | Suction modulation valve for refrigerant system with adjustable opening for pulse width modulation control A pulse width modulation control is provided for a suction modulation valve in a refrigerant system. An intentional small “leakage” path is maintained through the suction modulation valve to ensure that the pressure inside the compressor shell does not decrease ... | 06/28/2011 |
| 7654098 | Cooling system with variable capacity control A system includes a scroll compressor having a first scroll member interleaved with a second scroll member to define at least two moving fluid pockets that decrease in size as they move from a radially outer position to a radially inner position. A valve in fluid co... | 02/02/2010 |
| 7607315 | Pressure control valve and vapor-compression refrigerant cycle system using the same A pressure control valve includes a valve portion disposed in a passage from a refrigerant radiator to a suction port of a refrigerant compressor in a vapor-compression refrigerant cycle system. The valve portion controls a refrigerant pressure at an outlet of the r... | 10/27/2009 |
| RE40499 | Pulsed flow for capacity control Step control in capacity modulation of a refrigeration or air conditioning circuit is achieved by rapidly cycling a solenoid valve in the suction line, economizer circuit or in a bypass with the percent of “open” time for the valve regulating the rate of flow th... | 09/16/2008 |
| 7415836 | Cooling apparatus and a thermostat with the apparatus installed therein A cooling apparatus (1) has a compressor (2), a condenser (3), an expansion valve (5), an evaporator (6) and an electric valve (10), all connected to each other in this order by a piping line to form a refrigeration circuit.... | 08/26/2008 |
| 7328593 | Refrigerant valve arrangement A refrigerant valve arrangement is described, having a housing which has a first functional space, in which there is arranged at least one functional element, which co-operates with a first annular contact surface formed in an internal boundary wall. It is desirable... | 02/12/2008 |
| 7287396 | Evaporator pressure regulator control and diagnostics An apparatus for refrigeration system control includes a plurality of circuits, each circuit having at least one refrigeration case and an electronic evaporator pressure regulator in communication with each circuit. Each electronic evaporator pressure regulator cont... | 10/30/2007 |
| 7275376 | Defrost system for a refrigeration device A defrost system for a temperature controlled storage unit includes an enclosure providing a space for storage of products. A refrigeration system has a supply line and a return line coupled to a cooling element to circulate a refrigerant through the cooling element... | 10/02/2007 |
| 7275387 | Integrated ice and beverage dispenser An ice cube-making machine that is characterized by noiseless operation at the location where ice cubes are dispensed and be lightweight packages for ease of installation. The ice cube-making machine has an evaporator package, a separate compressor package and a sep... | 10/02/2007 |
| 7263846 | Refrigerant bypassing and filtering apparatus of air conditioner and method for controlling the same A refrigerant bypassing and filtering apparatus of an air conditioner is disclosed which is capable of effectively removing foreign matter such as slag produced in a refrigerant line, not only when the air conditioner is initially operated, but also during normal op... | 09/04/2007 |
| 7251947 | Refrigerant 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 |
| 7225630 | Refrigerating cycle apparatus, air conditioning apparatus, throttle device and flow controller In a refrigerating cycle incorporating a second flow controller having a throttle section, which is composed of an inlet noise eliminating space 19, an inlet side porous permeable member 20 communicating in a refrigerant flow direction, an orifice 2... | 06/05/2007 |
| 7207184 | Method for regulating a most loaded circuit in a multi-circuit refrigeration system A method for regulating a most loaded circuit of a refrigeration system is provided. Each circuit includes at least one case and an EEPR valve. At least one controller communicates with the EEPR valves for receiving signals from the circuits corresponding to operati... | 04/24/2007 |
| 7204099 | Refrigerant system with vapor injection and liquid injection through separate passages A refrigerant system is provided with economizer vapor injection and liquid injection functions. As is known, the economizer function enhances performance of the refrigerant system. The liquid injection lowers the discharge temperature of the refrigerant to provide ... | 04/17/2007 |
| 7197890 | Valve for preventing unpowered reverse run at shutdown An inventive method of preventing unpowered reverse rotation in a compressor includes the steps of placing a solenoid valve at a location near compressor discharge. The valve is preferably actuated soon after the power to the motor is cut off, blocking the flow of r... | 04/03/2007 |
| 7178346 | Constant temperature refrigeration system for extensive temperature range application and control method thereof A constant temperature refrigeration system for extensive temperature range application comprising a refrigerator, a low-temperature heat exchanger, a medium-temperature heat exchanger, a high-temperature heat exchanger, a pump, a first solenoid valve, a second sole... | 02/20/2007 |
| 7165414 | System for the dehumification of air An improved air conditioner system for controlling a desired temperature and a reduced humidity level in a space to be environmentally controlled, that comprises an additional second heat exchanger and third heat exchanger in the separate indoor air flow path. The r... | 01/23/2007 |
| 7162878 | Refrigeration apparatus Disclosed is an efficient refrigeration apparatus that provides refrigerant based energy storage and cooling. When connected to a condensing unit, the system has the ability to store energy capacity during one time period and provide cooling from the stored energy d... | 01/16/2007 |
| 7161803 | Cooling system for an electronic display A cooling system for an electronic display may include a heat collector plate with internal gas and liquid phase lines. The cooling plate may be thermally isolated together with electronic components of the display within an enclosure of the display, while external ... | 01/09/2007 |
| 7134294 | Method and apparatus for refrigeration system control having electronic evaporator pressure regulators A method and apparatus for refrigeration system control includes a control system operable to meet cooling demand and control suction pressure for a plurality of refrigeration circuits each including a variable valve and an expansion valve. The controller controls t... | 11/14/2006 |
| 7124594 | High efficiency refrigerant based energy storage and cooling system Disclosed is an efficient, energy storage and cooling system that is refrigerant based. When connected to a condensing unit, the system has the ability to store energy capacity during one time period and provide cooling from the stored energy during a second time pe... | 10/24/2006 |
| 7121103 | Vehicle air conditioning system An automobile air conditioning system controls the high pressure of the refrigeration cycle in a wide range of airflows from a low airflow region during an intermediate period to a high airflow region. When a dehumidifying mode is selected, the target high pressure ... | 10/17/2006 |
| 7114913 | Lubricant-cooled gas compressor In a lubricant-cooled gas compressor (10) the temperature of separated lubricant returned to the air-side (11) is monitored by a thermostatically controlled restrictor valve (22) which minimises the flow of returned lubricant when temperature is... | 10/03/2006 |
| 7114349 | Refrigerant system with common economizer and liquid-suction heat exchanger A refrigerant system is provided where the functions of an economizer heat exchanger and liquid-suction heat exchanger are combined. The two configurations are disclosed with a single common heat exchanger construction. In a first configuration, a series of valves s... | 10/03/2006 |
| 7104076 | Lubricant return schemes for use in refrigerant cycle A control algorithm is developed which takes corrective action in the event that system conditions indicate there may be an inadequate flow of lubricant in the system. In particular, if a discharge pressure is below a predetermined amount or if the suction modulatio... | 09/12/2006 |
| 7096679 | Transcritical vapor compression system and method of operating including refrigerant storage tank and non-variable expansion device A transcritical vapor compression system includes a fluid circuit circulating a refrigerant in a closed loop. The fluid circuit has operably disposed therein, in serial order, a compressor, a first heat exchanger, at least one non-variable expansion device and a sec... | 08/29/2006 |
| 7089760 | Air-conditioner The air-conditioner includes a compressor configured to compress and discharge a refrigerant. The air-conditioner includes a condenser configured to cool the refrigerant with air outside of a vehicle compartment. The air-conditioner includes a throttle configured to... | 08/15/2006 |
| 7059144 | Methods of freezeout prevention for very low temperature mixed refrigerant systems Refrigerant freezeout is prevented by the use of a controlled bypass flow that causes a warming of the lowest temperature refrigerant in a refrigeration system that achieves very low temperatures by using a mixture of refrigerants comprising at least two refrigerant... | 06/13/2006 |
| 7043927 | Transport Refrigeration system A transport refrigeration system, the transport refrigeration system including a container defining an enclosed volume and a refrigeration module coupled to the container. The refrigeration module is disposed to regulate the temperature of the enclosed volume and in... | 05/16/2006 |
| 7032222 | Method and system for determining resource allocation to users by granting request based on user associated different limits and resource limit A method for flexible allocation of a resource in which a soft limit and a hard limit are assigned to each of a set of potential users of the resource. The soft limits are selected to guarantee access to the resource by all of the potential users. The hard limits ar... | 04/18/2006 |
| 7017353 | Integrated ice and beverage dispenser An ice cube-making machine that is characterized by noiseless operation at the location where ice cubes are dispensed and be lightweight packages for ease of installation. The ice cube-making machine has an evaporator package, a separate compressor package and a sep... | 03/28/2006 |
| 6983618 | Method and apparatus for refrigeration system control having electronic evaporator pressure regulators A method and apparatus for refrigeration system control includes an evaporator pressure regulator and sensor in communication with one of a plurality of refrigeration circuits. The sensor is operable to measure a parameter of the refrigeration circuit. A controller ... | 01/10/2006 |
| 6973797 | Capacity control for economizer refrigeration systems An economizer-equipped refrigeration system and method is provided for simultaneous operation of at least one capacity control valve controlling an independent bypass circuit with operation and variable control of the economizer circuit to permit efficient, flexible... | 12/13/2005 |
| 6968713 | Desiccant cup with integral filter A desiccant container for use in an accumulator or a receiver/dryer of a vehicle includes at least one integral mesh screen for preventing small particles from passing therethrough. Preferably, the container includes two integral mesh screens, one forming an upper s... | 11/29/2005 |
| 6959557 | Apparatus for the storage and controlled delivery of fluids A vessel for containing a refrigerant fluid in a vapor compression system. The vessel includes a housing defining a fixed interior volume and an internal structure subdividing the interior volume into a storage chamber and a displacement chamber. The storage chamber... | 11/01/2005 |
| 6955059 | Vapor compression system A vapor compression system includes a main vapor compression circuit including a compressor, a condenser, an expansion device and an evaporator serially connected by main refrigerant lines, the compressor having a main discharge port, a suction port and an economize... | 10/18/2005 |
| 6952935 | Ice making and delivery system An ice making and ice delivery system is provided, whereby nuggets of ice are formed from scraped ice in the ice making apparatus, which is cooled by an evaporator in a refrigeration cycle, with the evaporator being provided with refrigerant from a closed circuit co... | 10/11/2005 |
| 6945067 | Ice cream freezer There is disclosed an ice cream freezer comprising a system (1) including a freezer pipe (8) and a cooling system (9), a pipe system I is used for introducing ingredients by means of an introducing pump (1). A pipe system (U) is used for ... | 09/20/2005 |
| 6938438 | Vapor compression system with bypass/economizer circuits A vapor compression system includes a main circuit comprising a compressor, a condenser, an expansion device and an evaporator serially connected by main refrigerant lines, the compressor having a suction port, a discharge port and an intermediate pressure port; an ... | 09/06/2005 |
| 6938432 | Cooling apparatus and a thermostat with the apparatus installed therein A cooling apparatus (1) has a compressor (2), a condenser (3), an expansion valve (5), an evaporator (6) and an electric valve (10), all connected to each other in this order by a piping line to form a refrigeration circuit.... | 09/06/2005 |
