US20080216494A1 - Compressor data module - Google Patents

Compressor data module Download PDF

Info

Publication number
US20080216494A1
US20080216494A1 US11850846 US85084607A US2008216494A1 US 20080216494 A1 US20080216494 A1 US 20080216494A1 US 11850846 US11850846 US 11850846 US 85084607 A US85084607 A US 85084607A US 2008216494 A1 US2008216494 A1 US 2008216494A1
Authority
US
Grant status
Application
Patent type
Prior art keywords
compressor
data
controller
data module
non
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11850846
Inventor
Hung M. Pham
Nagaraj Jayanth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Emerson Climate Technologies Inc
Original Assignee
Emerson Climate Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Images

Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B15/00Systems controlled by a computer
    • G05B15/02Systems controlled by a computer electric
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008Hermetic pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/005Arrangement or mounting of control or safety devices of safety devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00Control; Monitoring or safety arrangements
    • F04C2270/07Electric current
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00Control; Monitoring or safety arrangements
    • F04C2270/19Temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00Control; Monitoring or safety arrangements
    • F04C2270/70Safety, emergency conditions or requirements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00Control; Monitoring or safety arrangements
    • F04C2270/80Diagnostics
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C27/00Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/005Axial sealings for working fluid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/06Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation

Abstract

A compressor includes a shell, a compression mechanism, a motor, a data module, and a compressor controller. The data module includes a processor and a memory. The compressor controller includes a processor and a memory. The data module receives sensed data, stores sensed data in the memory, and communicates sensed data to the compressor controller. The compressor controller controls a capacity of the compressor based on the sensed data and is operable to communicate with a system controller of a refrigeration system.

Description

    CROSS-REFERENCE TO RELATED APPLICATIONS
  • This application claims the benefit of U.S. Provisional Application No. 60/842,898, filed on Sep. 7, 2006. The disclosure of the above application is incorporated herein by reference.
  • FIELD
  • The present disclosure relates to compressors, and more particularly, to a data module for use with a compressor.
  • BACKGROUND
  • The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
  • Compressors are used in a wide variety of industrial and residential applications to circulate refrigerant within a refrigeration, heat pump, HVAC, or chiller system (generically referred to as “refrigeration systems”) to provide a desired heating and/or cooling effect. In any of the foregoing applications, the compressor should provide consistent and efficient operation to ensure that the particular refrigeration system functions properly.
  • Refrigeration systems and associated compressors may include a protection device that intermittently restricts power to the compressor to prevent operation of the compressor and associated components of the refrigeration system (i.e., evaporator, condenser, etc.) when conditions are unfavorable. For example, when a particular fault or failure is detected within the compressor, the protection device may restrict power to the compressor to prevent operation of the compressor and refrigeration system under such conditions.
  • The types of faults that may cause protection concerns include electrical, mechanical, and system faults. Electrical faults typically have a direct effect on an electrical motor associated with the compressor, while mechanical faults generally include faulty bearings or broken parts. Mechanical faults often raise a temperature of working components within the compressor and, thus, may cause malfunction of, and possible damage to, the compressor.
  • In addition to electrical and mechanical faults associated with the compressor, the refrigeration system components may be affected by system faults attributed to system conditions such as an adverse level of fluid disposed within the system or to a blocked-flow condition external to the compressor. Such system conditions may raise an internal compressor temperature or pressure to high levels, thereby damaging the compressor and causing system inefficiencies and/or failures. To prevent system and compressor damage or failure, the compressor may be shut down by the protection system when any of the aforementioned conditions are present.
  • Conventional protection systems may sense temperature and/or pressure parameters as discrete switches to interrupt power supplied to the electrical motor of the compressor should a predetermined temperature or pressure threshold be exceeded. Such systems typically employ multiple temperature and pressure sensors to detect operating parameters of the compressor, which results in a complex and costly protection system.
  • Because conventional protection systems directly control a compressor to which they are tied, conventional protection systems cannot be used with multiple control modules, and may only be used with a single compressor and a single controller.
  • SUMMARY
  • A compressor includes a shell, a compression mechanism, a motor, a data module, and a compressor controller. The data module includes a processor and a memory. The compressor controller includes a processor and a memory. The data module receives sensed data, stores sensed data in the memory, and communicates sensed data to the compressor controller. The compressor controller controls a capacity of the compressor based on the sensed data and is operable to communicate with a system controller of a refrigeration system.
  • In a refrigeration system that includes a system controller in communication with a compressor controller associated with a compressor, a data module includes a housing, a processor and a memory. The housing is mountable on the compressor and the processor receives sensed data, stores sensed data in the memory, and is operable to communicate sensed data to the compressor controller.
  • A compressor control system includes a compressor and a compressor controller that is operable to diagnose and/or control the compressor. A data module is associated with the compressor, is in communication with the compressor controller, and receives sensor data indicative of compressor performance. It further determines non-measured system operating parameters and diagnoses the compressor based on at least one of the sensor data and the non-measured system operating parameters. The data module further communicates the sensor data, the non-measured system operating parameters, and the diagnosis to the compressor controller.
  • A method includes communicating sensor data to a data module, processing the sensor data at the data module to determine non-measured operating parameters of at least one of a compressor and a refrigeration system, and processing at least one of the sensor data and the determined non-measured operating parameters at the data module to diagnose the at least one compressor and refrigeration system. A method further includes communicating the sensor data, the non-measured operating parameters, and the diagnosis to a system controller. The non-measured operating parameters are determined at the system controller based on the received sensor data and the diagnosis at the system controller is determined based on the received sensor data and the non-measured operating parameters. The received non-measured operating parameters are compared to the determined non-measured operating parameters at the system controller and the received diagnosis is compared to the determined diagnosis at the system controller.
  • A method further includes communicating sensor data to a data module and processing the sensor data at the data module to determine non-measured operating parameters of at least one of a compressor and a refrigeration system. At least one of the sensor data and the non-measured operating parameters are processed at the data module to diagnose the at least one compressor and refrigeration system. At least one of the sensor data, the non-measured operating parameters, and the diagnosis is stored in a memory of the data module. At least one of the sensor data, the non-measured operating parameters, and the diagnosis is communicated to a first system controller. The first system controller is replaced with a second system controller. At least one of the stored sensor data, the stored non-measured operating parameters, and the stored diagnosis is communicated to the second controller.
  • Further areas of applicability will become apparent from the description provided herein. It should be understood that the description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure.
  • DRAWINGS
  • The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way.
  • FIG. 1 is a perspective view of a compressor incorporating a data module in accordance with the principles of the present teachings;
  • FIG. 2 is a cross-sectional view of the compressor of FIG. 1;
  • FIG. 3 is a schematic representation of a refrigeration system incorporating the compressor of FIG. 1;
  • FIG. 4 is a table illustrating various sensor combinations used to determine various compressor and system operating parameters;
  • FIG. 5 is a graph of compressor current versus condenser temperature for use in determining condenser temperature at a given evaporator temperature;
  • FIG. 6 is a graph of discharge temperature versus evaporator temperature for use in determining an evaporator temperature at a given condenser temperature;
  • FIG. 7 is a graph of discharge superheat versus suction superheat to determine suction superheat at a given outdoor/ambient temperature;
  • FIG. 8 is a schematic representation of the data module of FIG. 1 shown in communication with a diagnostic and control module and a plurality of sensors;
  • FIG. 9 is a more detailed schematic representation of the data module of FIG. 1; and
  • FIG. 10 is a schematic representation of another data module for use with the compressor of FIG. 1 incorporating a diagnostic and control module and in communication with a plurality of sensors.
  • DETAILED DESCRIPTION
  • The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features. As used herein, the term module refers to an application specific integrated circuit (ASIC), an electronic circuit, a processor (shared, dedicated or group) and memory that execute one or more software or firmware programs, a combinational logic circuit, or other suitable components that proved the described functionality.
  • With reference to the drawings, a compressor 10 is shown incorporating a protection and control system 12. The protection and control system 12 utilizes a series of sensors and non-measured operating parameters derived from information received from the sensors to diagnose the compressor 10 and refrigeration system 11 to which the compressor 10 may be tied. The protection and control system 12 includes a data module 14 and a diagnostics and control module 15. The data module 14 may provide multiple levels of data for use by the diagnostics and control module 15 in diagnosing and controlling the compressor 10 and/or refrigeration system 11. For example, the data module 14 may provide three levels of data for use by the diagnostics and control module 15, including sensor data, non-measured operating parameters (i.e., processed sensor data), and diagnostics for use by the diagnostics and control module 15 in diagnosing and controlling the compressor 10 and/or refrigeration system 11.
  • The data provided by the data module 14 is not controller specific. Therefore, the data module 14 may be used with any control module. Providing the data module 14 with the ability to be used with any control module allows the data module 14 flexibility in that the data module 14 may be used with various controllers of various manufacturers and configurations.
  • With particular reference to FIGS. 1 and 2, the compressor 10 is shown to include a generally cylindrical hermetic shell 17 having a welded cap 16 at a top portion and a base 18 having a plurality of feet 20 welded at a bottom portion. The cap 16 and the base 18 are fitted to the shell 17 such that an interior volume 22 of the compressor 10 is defined. The cap 16 is provided with a discharge fitting 24, while the shell 17 is similarly provided with an inlet fitting 26, disposed generally between the cap 16 and base 18, as best shown in FIG. 2. In addition, an electrical enclosure 28 is fixedly attached to the shell 17 generally between the cap 16 and the base 18 and supports a portion of the protection and control system 12 therein.
  • A crankshaft 30 is rotatably driven by an electric motor 32 relative to the shell 17. The motor 32 includes a stator 34 fixedly supported by the hermetic shell 17, windings 36 passing therethrough, and a rotor 38 press-fit on the crankshaft 30. The motor 32 and associated stator 34, windings 36, and rotor 38 cooperate to drive the crankshaft 30 relative to the shell 17 to compress a fluid.
  • The compressor 10 further includes an orbiting scroll member 40 having a spiral vein or wrap 42 on an upper surface thereof for use in receiving and compressing a fluid. An Oldham coupling 44 is disposed generally between the orbiting scroll member 40 and bearing housing 46 and is keyed to the orbiting scroll member 40 and a non-orbiting scroll member 48. The Oldham coupling 44 transmits rotational forces from the crankshaft 30 to the orbiting scroll member 40 to compress a fluid disposed generally between the orbiting scroll member 40 and the non-orbiting scroll member 48. Oldham coupling 44, and its interaction with orbiting scroll member 40 and non-orbiting scroll member 48, is preferably of the type disclosed in assignee's commonly owned U.S. Pat. No. 5,320,506, the disclosure of which is incorporated herein by reference.
  • Non-orbiting scroll member 48 also includes a wrap 50 positioned in meshing engagement with the wrap 42 of the orbiting scroll member 40. Non-orbiting scroll member 48 has a centrally disposed discharge passage 52, which communicates with an upwardly open recess 54. Recess 54 is in fluid communication with the discharge fitting 24 defined by the cap 16 and a partition 56, such that compressed fluid exits the shell 17 via discharge passage 52, recess 54, and fitting 24. Non-orbiting scroll member 48 is designed to be mounted to bearing housing 46 in a suitable manner such as disclosed in assignee's commonly owned U.S. Pat. Nos. 4,877,382 and 5,102,316, the disclosures of which are incorporated herein by reference.
  • The electrical enclosure 28 includes a lower housing 58, an upper housing 60, and a cavity 62. The lower housing 58 is mounted to the shell 17 using a plurality of studs 64, which are welded or otherwise fixedly attached to the shell 17. The upper housing 60 is matingly received by the lower housing 58 and defines the cavity 62 therebetween. The cavity 62 is positioned on the shell 17 of the compressor 10 and may be used to house respective components of the protection and control system 12 and/or other hardware used to control operation of the compressor 10 and/or refrigeration system 11.
  • With particular reference to FIG. 2, the compressor 10 includes an actuation assembly 65 that selectively separates the orbiting scroll member 40 from the non-orbiting scroll member 48 to modulate a capacity of the compressor 10. The actuation assembly 65 may include a solenoid 66 connected to the orbiting scroll member 40 and a controller 68 coupled to the solenoid 66 for controlling movement of the solenoid 66 between an extended position and a retracted position.
  • Movement of the solenoid 66 into the extended position separates the wraps 42 of the orbiting scroll member 40 from the wraps 50 of the non-orbiting scroll member 48 to reduce an output of the compressor 10. Conversely, movement of the solenoid 66 into the retracted position moves the wraps 42 of the orbiting scroll member 40 closer to the wraps 50 of the non-orbiting scroll member 48 to increase an output of the compressor. In this manner, the capacity of the compressor 10 may be modulated in accordance with demand or in response to a fault condition.
  • While movement of the solenoid 66 into the extended position is described as separating the wraps 42 of the orbiting scroll member 40 from the wraps 50 of the non-orbiting scroll member 48, movement of the solenoid 66 into the extended position could alternately move the wraps 42 of the orbiting scroll member 40 into engagement with the wraps 50 of the non-orbiting scroll member 48. Similarly, while movement of the solenoid 66 into the retracted position is described as moving the wraps 42 of the orbiting scroll member 40 closer to the wraps 50 of the non-orbiting scroll member 48, movement of the solenoid 66 into the retracted position could alternately move the wraps 42 of the orbiting scroll member 40 away from the wraps 50 of the non-orbiting scroll member 48. The actuation assembly 65 is preferably of the type disclosed in assignee's commonly owned U.S. Pat. No. 6,412,293, the disclosure of which is incorporated herein by reference.
  • With particular reference to FIG. 3, the refrigeration system 11 includes a condenser 70, an evaporator 72, and an expansion device 74 disposed generally between the condenser 70 and the evaporator 72. The refrigeration system 11 also includes a condenser fan 76 associated with the condenser 70 and an evaporator fan 78 associated with the evaporator 72. Each of the condenser fan 76 and the evaporator fan 78 may be variable-speed fans that can be controlled based on a cooling and/or heating demand of the refrigeration system 11. Furthermore, each of the condenser fan 76 and evaporator fan 78 may be controlled by the protection and control system 12 such that operation of the condenser fan 76 and evaporator fan 78 may be coordinated with operation of the compressor 10.
  • In operation, the compressor 10 circulates refrigerant generally between the condenser 70 and evaporator 72 to produce a desired heating and/or cooling effect. The compressor 10 receives vapor refrigerant from the evaporator 72 generally at the inlet fitting 26 and compresses the vapor refrigerant between the orbiting scroll member 40 and the non-orbiting scroll member 48 to deliver vapor refrigerant at discharge pressure at discharge fitting 24.
  • Once the compressor 10 has sufficiently compressed the vapor refrigerant to discharge pressure, the discharge-pressure refrigerant exits the compressor 10 at the discharge fitting 24 and travels within the refrigeration system 11 to the condenser 70. Once the vapor enters the condenser 70, the refrigerant changes phase from a vapor to a liquid, thereby rejecting heat. The rejected heat is removed from the condenser 70 through circulation of air through the condenser 70 by the condenser fan 76. When the refrigerant has sufficiently changed phase from a vapor to a liquid, the refrigerant exits the condenser 70 and travels within the refrigeration system 11 generally towards the expansion device 74 and evaporator 72.
  • Upon exiting the condenser 70, the refrigerant first encounters the expansion device 74. Once the expansion device 74 has sufficiently expanded the liquid refrigerant, the liquid refrigerant enters the evaporator 72 to change phase from a liquid to a vapor. Once disposed within the evaporator 72, the liquid refrigerant absorbs heat, thereby changing from a liquid to a vapor and producing a cooling effect. If the evaporator 72 is disposed within an interior of a building, the desired cooling effect is circulated into the building to cool the building by the evaporator fan 78. if the evaporator 72 is associated with a heat-pump refrigeration system, the evaporator 72 may be located remote from the building such that the cooling effect is lost to the atmosphere and the rejected heat experienced by the condenser 70 is directed to the interior of the building to heat the building. In either configuration, once the refrigerant has sufficiently changed phase from a liquid to a vapor, the vaporized refrigerant is received by the inlet fitting 26 of the compressor 10 to begin the cycle anew.
  • With particular reference to FIGS. 2 and 3, the protection and control system 12 is shown to include a current sensor 80, a temperature sensor 82, a liquid line temperature sensor 84, and an outdoor/ambient temperature sensor 86. The protection and control system 12 also includes processing circuitry 88, 89, respectively associated with the data module 14 and diagnostics and control module 15, and a power interruption system 90. The processing circuitry 88, 89 and power interruption system 90 may be disposed within the electrical enclosure 28 mounted to the shell 17 of the compressor 10 (FIG. 2). The sensors 80, 82, 84, 86 cooperate to provide the processing circuitry 88 of the data module 14 with sensor data indicative of compressor and/or refrigeration system operating parameters for use by the processing circuitry 88 in determining operating parameters of the compressor 10 and/or refrigeration system 11 that are not directly sensed by a sensor (hereinafter “non-measured operating parameters”). The processing circuitry 88 may use the sensor data to compute the non-measured operating parameters.
  • The processing circuitry 88 may use the sensor data and/or non-measured operating parameters to diagnose the compressor 10 and/or refrigeration system 11. The data module 14 may transmit the sensor data, derived non-measured operating parameters, and/or compressor/refrigeration system diagnosis to the processing circuitry 89 of the diagnostics and control module 15 for use by the processing circuitry 89 in diagnosing and controlling the compressor 10 and/or refrigeration system 11. Because the data module 14 provides compressor and/or refrigeration system operational data, the data module 14 is not controller specific and may be used with various control modules including diagnostics and control module 15. Operation of the data module 14 and diagnostics and control module 15 will be described in detail below.
  • The current sensor 80 may provide diagnostics related to high-side faults such as compressor mechanical failures, motor failures, and electrical component failures such as missing phase, reverse phase, motor winding current imbalance, open circuit, low voltage, locked rotor current, excessive motor winding temperature, welded or open contactors, and short cycling. The current sensor 80 may monitor compressor current and voltage for use in determining and differentiating between mechanical failures, motor failures, and electrical component failures.
  • The current sensor 80 may be mounted within the electrical enclosure 28 or may alternatively be incorporated inside the shell 17 of the compressor 10 (FIG. 2). In either case, the current sensor 80 may monitor current drawn by the compressor 10 and generate a signal indicative thereof, such as disclosed in assignee's commonly owned U.S. Pat. No. 6,615,594, U.S. patent application Ser. No. 11/027,757 filed on Dec. 30, 2004, and U.S. patent application Ser. No. 11/059,646 filed on Feb. 16, 2005, the disclosures of which are incorporated herein by reference.
  • While a current sensor 80 is disclosed, the protection and control system 12 may also include a discharge-pressure sensor 92 mounted in a discharge-pressure zone and/or a temperature sensor 94 mounted within or near the compressor shell 17 such as within the discharge fitting 24 (FIG. 2) or in an external system such as the condenser 70 (FIG. 3). The temperature sensor 94 may additionally or alternatively be positioned external of the compressor 10 along a conduit 103 extending generally between the compressor 10 and the condenser 70 (FIG. 3) and may be disposed in close proximity to an inlet of the condenser 70. Any or all of the foregoing sensors may be used in conjunction with the current sensor 80 to provide the protection and control system 12 with additional system information.
  • The temperature sensor 82 generally provides data related to low-side faults such as a low charge in the refrigerant, a plugged orifice, an evaporator fan failure, or a leak in the compressor 10. The temperature sensor 82 may be disposed proximate to the discharge fitting 24 or the discharge passage 52 of the compressor 10 and may monitor a discharge line temperature of a compressed fluid exiting the compressor 10. In addition to the foregoing, the temperature sensor 82 may be disposed external from the compressor shell 17 and proximate to the discharge fitting 24 such that vapor at discharge pressure encounters the temperature sensor 82. Locating the temperature sensor 82 external of the shell 17 allows flexibility in compressor and system design by providing the temperature sensor 82 with the ability to be readily adapted for use with practically any compressor and any system.
  • While the temperature sensor 82 may provide discharge line temperature information, the protection and control system 12 may also include a suction-pressure sensor 96 or a low-side temperature sensor 98, which may be mounted proximate to an inlet of the compressor 10. In one configuration, the suction pressure sensor 96 or the low-side temperature sensor 98 is located proximate to the inlet fitting 26 (FIG. 2) or is mounted in an external system such as the evaporator 72 (FIG. 3). The suction-pressure sensor 96 and low-side temperature sensor 98 may additionally or alternatively be disposed along a conduit 105 extending generally between the evaporator 72 and the compressor 10 (FIG. 3) and may be disposed in close proximity to an outlet of the evaporator 72. Any or all of the foregoing sensors may be used in conjunction with the temperature sensor 82 to provide the protection and control system 12 with additional system information.
  • While the temperature sensor 82 may be positioned external to the shell 17 of the compressor 10, the discharge temperature of the compressor 10 can similarly be measured within the shell 17 of the compressor 10. A discharge-core temperature, taken generally at the discharge fitting 24, could be used in place of the discharge line temperature arrangement shown in FIG. 2. A hermetic terminal assembly 100 may be used with such an internal discharge temperature sensor to maintain the sealed nature of the compressor shell 17.
  • The liquid line temperature sensor 84 may be positioned either within the condenser 70 or may be positioned along a conduit 102 extending generally between an outlet of the condenser 70 and the expansion device 74. In this position, the temperature sensor 84 is located in a position within the refrigeration system 11 that represents a liquid location that is common to both a cooling mode and a heating mode if the refrigeration system 11 is a heat pump. Because the liquid line temperature sensor 84 is disposed generally near an outlet of the condenser 70 or along the conduit 102 extending generally between the outlet of the condenser 70 and the expansion device 74, the liquid line temperature sensor 84 encounters liquid refrigerant (i.e., after the refrigerant has changed from a vapor to a liquid within the condenser 70) and therefore can provide an indication of a temperature of the liquid refrigerant to the processing circuitry 88. While the liquid line temperature sensor 84 is described as being near an outlet of the condenser 70 or along a conduit 102 extending between the condenser 70 and the expansion device 74, the liquid line temperature sensor 84 may also be placed anywhere within the refrigeration system 11 that would allow the liquid line temperature sensor 84 to provide an indication of a temperature of liquid refrigerant within the refrigeration system 11 to the processing circuitry 88.
  • The outdoor/ambient temperature sensor 86 may be located external from the compressor shell 17 and generally provides an indication of the outdoor/ambient temperature surrounding the compressor 10 and/or refrigeration system 11. The outdoor/ambient temperature sensor 86 may be positioned adjacent to the compressor shell 17 such that the outdoor/ambient temperature sensor 86 is in close proximity to the processing circuitry 88 (FIGS. 2 and 3). Placing the outdoor/ambient temperature sensor 86 in close proximity to the compressor shell 17 provides the processing circuitry 88 of the data module 14 with a measure of the temperature generally adjacent to the compressor 10. Locating the outdoor/ambient temperature sensor 86 in close proximity to the compressor shell 17 not only provides the processing circuitry 88 with an accurate measure of the surrounding air around the compressor 10, but also allows the outdoor/ambient temperature sensor 86 to be attached to or disposed within the electrical enclosure 28.
  • The processing circuitry 88 of the data module 14 may receive sensor information from the current sensor 80, temperature sensor 82, liquid line temperature sensor 84, and outdoor/ambient temperature sensor 86. As shown in FIG. 4, the processing circuitry 88 uses the sensor data from the respective sensors 80, 82, 84, 86 to determine non-measured operating parameters of the compressor 10 and/or refrigeration system 11.
  • The processing circuitry 88 may be able to determine non-measured operating parameters of the compressor 10 and/or refrigeration system 11 based on sensor data received from the respective sensors 80, 82, 84, 86 without requiring individual sensors for each of the non-measured operating parameters. The processing circuitry 88 may be able to determine condenser temperature (Tcond), subcooling of the refrigeration system 11, a temperature difference between the condenser temperature and outdoor/ambient temperature condenser (TD), and a discharge superheat of the refrigeration system 11.
  • The processing circuitry 88 may determine the condenser temperature by referencing compressor power on a compressor map. The derived condenser temperature is generally the saturated condenser temperature equivalent to the discharge pressure for a particular refrigerant. The condenser temperature should be close to a temperature at a mid-point of the condenser 70. Using a compressor map to determine the condenser temperature provides a more accurate representation of the overall temperature of the condenser 70 when compared to a condenser temperature value provided by a temperature sensor mounted on a coil of the condenser 70, as the condenser coil likely includes many parallel circuits having different temperatures.
  • FIG. 5 is an example of a compressor map showing compressor current versus condenser temperature at various evaporator temperatures (Tevap). As shown, current remains fairly constant irrespective of evaporator temperature. Therefore, while an exact evaporator temperature can be determined by a second degree polynomial (i.e., a quadratic function), for purposes of control, the evaporator temperature can be determined by a first degree polynomial (i.e., a linear function) and can be approximated as roughly 45, 50, or 55 degrees Fahrenheit. The error associated with choosing an incorrect evaporator temperature is minimal when determining the condenser temperature. While compressor current is shown, compressor power and/or voltage may be used in place of current for use in determining condenser temperature. Compressor power may be determined based on the current drawn by motor 32, as indicated by the current sensor 80.
  • Once the compressor current is known it may adjust for voltage based on a baseline voltage contained in a compressor map. The condenser temperature may be determined by comparing compressor current with condenser temperature using the graph shown in FIG. 5. The above process for determining the condenser temperature is described in assignee's commonly-owned U.S. patent application Ser. No. 11/059,646 filed on Feb. 16, 2005, the disclosure of which is herein incorporated by reference.
  • Once the condenser temperature is known, the processing circuitry 88 may then determine the subcooling of the refrigeration system 11 by subtracting the liquid line temperature indicated by the liquid line temperature sensor 84 from the condenser temperature and then subtracting an additional small value (typically 2-3° F.) representing the pressure drop between an outlet of the compressor 10 and an outlet of the condenser 70. The processing circuitry 88 is therefore able to determine not only the condenser temperature but also the subcooling of the refrigeration system 11 without requiring an additional temperature sensor for either operating parameter.
  • The processing circuitry 88 may also be able to calculate a temperature difference (TD) between the condenser 70 and the outdoor/ambient temperature surrounding the refrigeration system 11. The processing circuitry 88 may determine the condenser temperature by referencing either the power or current drawn by the compressor 10 against the graph shown in FIG. 5 without requiring a temperature sensor to be positioned within the condenser 70. Once the condenser temperature is known (i.e., derived), the processing circuitry 88 can determine the temperature difference (TD) by subtracting the ambient temperature as received from the outdoor/ambient temperature sensor 86 from the derived condenser temperature.
  • The discharge superheat of the refrigeration system 11 may also be determined once the condenser temperature is known. Specifically, the processing circuitry 88 may determine the discharge superheat of the refrigeration system 11 by subtracting the condenser temperature from the discharge line temperature. As described above, the discharge line temperature may be detected by the temperature sensor 82 and is provided to the processing circuitry 88. Because the processing circuitry 88 can determine the condenser temperature by referencing the compressor power against the graph shown in FIG. 5, and because the processing circuitry 88 knows the discharge line temperature based on information received from the temperature sensor 82, the processing circuitry 88 can determine the discharge superheat of the compressor 10 by subtracting the condenser temperature from the discharge line temperature.
  • Once the discharge superheat is determined, the processing circuitry 88 can determine the suction superheat by referencing a plot as shown in FIG. 7. Specifically, the suction superheat may be determined by referencing the discharge superheat against the ambient temperature as indicated by the outdoor/ambient temperature sensor 86.
  • Once the condenser temperature is determined, the processing circuitry 88 can reference a plot as shown in FIG. 6 to determine the exact evaporator temperature based on discharge temperature information received from the temperature sensor 82. Once both the condenser temperature and the evaporator temperature are known, the processing circuitry 88 can then determine compressor capacity and flow.
  • In addition to deriving the condenser temperature, evaporator temperature, subcooling, discharge superheat, compressor capacity and flow, and suction superheat, the processing circuitry 88 may also measure or estimate the fan power of the condenser fan 76 and/or evaporator fan 78 and derive a compressor power factor for use in determining the efficiency of the refrigeration system 11 and the capacity of the evaporator 72. The fan power of the condenser fan 76 and/or evaporator fan 78 may be directly measured by sensors 85 associated with the fans 76, 78 or may be estimated by the processing circuitry 88.
  • Once the non-measured operating parameters are determined, the performance of the compressor 10 and refrigeration system 11 can be determined by the data module 14. As noted above, the data module 14 may provide three levels of data to the diagnostics and control module 15. First, sensor data may be transmitted from the data module 14 to the diagnostics and control module 15 for use by the diagnostics and control module 15 in diagnosing and controlling the compressor 10 and refrigeration system 11. Second, the sensor data and/or non-measured operating parameters may be transmitted to the diagnostics and control system 15 for use by the diagnostics and control module 15 in diagnosing and controlling the compressor 10 and/or refrigeration system 11. Third, the sensor data, non-measured operating parameters, and compressor/refrigeration system diagnostics may be transmitted to the diagnostics and control module 15 for use by the diagnostics and control module 15 in diagnosing and controlling the compressor 10 and/or refrigeration system 11.
  • The data module 14 may include configuration data and fault history data stored therein in addition to the three tiers of data discussed above. Configuration data may include compressor serial number, manufacturing date, compressor performance maps, etc., while fault history data may include a list of faults previously experienced by the compressor and/or refrigeration system and a related cause of the particular fault. The configuration data and fault history data may be provided to the diagnostics and control module 15 to update the diagnostics and control module 15 or to configure a new diagnostics and control module 15 should the diagnostics and control module 15 require replacement. For example, if the diagnostics and control module 15 becomes faulty and a new diagnostics and control module 15 is installed, the data module 14 may provide the configuration and/or fault history data to the new diagnostics and control module 15 to configure the diagnostics and control module 15. Such configuration and fault history data may include data described in assignee's commonly-owned U.S. Provisional Patent Application No. 60/674,781 filed on Apr. 26, 2005 now U.S. patent application Ser. No. 11/405,021 filed on Apr. 14, 2006, the disclosures of which are herein incorporated by reference.
  • With particular reference to FIGS. 8 and 9, operation of the data module 14 and diagnostics and control module 15 will be described in detail. As shown in FIG. 8, the data module 14 receives inputs from the various sensors 80, 82, 84, 86, which provide the data module 14 with current operating conditions of the compressor 10 and/or refrigeration system 11. The processing circuitry 88 of the data module 14 may use the data from the respective sensors 80, 82, 84, 86 to determine non-measured operating parameters of the compressor 10 and/or refrigeration system 11.
  • As described above, the data module 14 may determine non-measured operating parameters of the compressor 10 and/or refrigeration system 11 such as subcooling, condenser temperature, condenser temperature difference, suction superheat, discharge superheat, and evaporator temperature. For example, the data module 14 may receive liquid line temperature information from the liquid line temperature sensor 84 and current and/or voltage information from the current sensor 80 and may use the information received from the respective sensors 80, 84 to determine the condenser temperature and subcooling (FIG. 4). Specifically, once the current drawn by the motor 32 is known by information received from current sensor 80, the processing circuitry 88 of data module 14 may reference the current reading from the current sensor 80 against a compressor map such as the plot shown in FIG. 5, which may be stored within the data module 14. Referencing the current drawn by the motor 32 against a compressor map such as the plot shown in FIG. 5, yields an approximated condenser temperature by referencing the current drawn by the motor 32 against an approximated evaporator temperature. Once the condenser temperature is determined by the processing circuitry 88, the subcooling may then be determined simply by subtracting the liquid line temperature as measured by the liquid line temperature sensor 84 from the determined condenser temperature, as indicated in FIG. 4.
  • Once the processing circuitry 88 of the data module 14 has determined the non-measured parameters of the compressor 10 and/or refrigeration system 11, the data module 14 may then transmit one or both of the sensor data received from sensors 80, 82, 84, 86 and the derived, non-measured parameters to the diagnostics and control module 15. The processing circuitry 89 of the diagnostics and control module 15 may use the sensor data from the sensors 80, 82, 84, 86 and/or the derived, non-measured parameters to diagnose the compressor 10 and/or refrigeration system 11.
  • Such diagnostics may be used to differentiate between various fault conditions of the compressor 10 and/or refrigeration system 11 and may be used to control/protect the compressor 10 and/or refrigeration system 11. For example, the diagnostics and control module 15 may use the received data from the data module 14 to control a capacity of the compressor 10. The diagnostics and control module 15 may modulate the compressor capacity by selectively separating the orbiting scroll member 40 from the non-orbiting scroll member 48 via solenoid 66, by selectively toggling the compressor between an ON state and an OFF state, and/or through blocked-suction modulation.
  • In addition to simply transmitting the sensor data received from sensors 80, 82, 84, 86 and the non-measured parameters to the diagnostics and control module 15, the data module 14 may also use the sensor data received from sensors 80, 82, 84, 86 and/or the non-measured parameters to diagnose the compressor 10 and/or refrigeration system 11. Specifically, the processing circuitry 88 of the data module 14 may use the sensor data received from the sensors 80, 82, 84, 86 and the non-measured parameters to provide the diagnostics and control module 15 with a diagnosis of the compressor 10 and/or refrigeration system 11.
  • In addition to the foregoing, the data module 14 may alternatively provide a diagnosis of the compressor 10 and/or refrigeration system 11 directly to the processing circuitry 89 of the diagnostics and control module 15 for use in directly controlling operation of the compressor 10 and/or refrigeration system 11.
  • The diagnostics and control module 15 may use the diagnosis provided by the data module 14 for use in comparison to the diagnosis of the compressor 10 and/or refrigeration system 11 made by the processing circuitry 89 of the diagnostics and control module 15. In this manner, the diagnostics and control module 15 is able to verify the diagnostics made by the processing circuitry 89 by comparing the diagnostic made by the processing circuitry 89 with that of the processing circuitry 88.
  • In addition to transmitting the sensor data from sensors 80, 82, 84, 86, the non-measured operating parameters, and the diagnosis of the compressor 10 and/or refrigeration system 11 to the diagnostics and control module 15, the data module 14 may additionally or alternatively supply such sensor data, non-measured operating parameters, and/or diagnosis directly to an external system such as a computer or system controller 104 and/or hand-held device 106. The diagnostics and control module 15 may also supply the computer 104 and/or hand-held device 106 with the sensor data, non-measured operating parameters, and/or diagnosis received from the data module 14 as well as the diagnostics performed by the diagnostics and control module 15 for use by the computer 104 and/or hand-held device 106.
  • The computer 104 and/or hand-held device 106 may use the sensor data, non-measured operating parameters, and/or diagnosis to control, track and/or monitor operation of the compressor 10 and/or refrigeration system 11. For example, the computer 104 may be remotely located from the compressor 10 and/or refrigeration system 11 such that the compressor 10 and/or refrigeration system 11 may be diagnosed, controlled, and monitored from a remote location. Providing a hand-held device 106 with the sensor data, non-measured operating parameters, and/or diagnostics performed by the data module 14 and/or diagnostics and control module 15 provides a service technician with an operational history of a compressor 10 and/or refrigeration system 11 for use in servicing the compressor 10 and/or refrigeration system 11.
  • As shown in FIG. 8, the data module 14 and associated processing circuitry 88 may be separated from the diagnostics and control module 15 and associated processing circuitry 89. For example, the data module 14 and associated processing circuitry 88 may be positioned within the electrical enclosure 28 such that the data module 14 and associated processing circuitry 88 are mounted to the shell 17 of the compressor 10 while the diagnostics and control module 15 and associated processing circuitry 89 are remotely located from the compressor 10. Remotely locating the diagnostics and control module 15 from the data module 14 allows for remote control of the compressor 10 and/or refrigeration system 11.
  • While the diagnostics and control module 15 may be remotely located from the data module 14, the diagnostics and control module 15 may alternatively be received in the electrical enclosure 28 such that the diagnostics and control module 15 and associated processing circuitry 89 are mounted to the shell 17 of the compressor 10. FIG. 2 shows the data module 14 and associated processing circuitry 88 as well as the diagnostics and control module 15 and associated processing circuitry 88 being disposed generally within the electrical enclosure 28 and mounted to the shell 17 of the compressor 10. FIG. 10 schematically represents this relationship, whereby the data module 14 and diagnostics and control module 15 are integrated as a single unit. While the data module 14 and diagnostics and control module 15 are described as including separate processing circuitry 88, 89, respectively, when the data module 14 and diagnostics and control module 15 are incorporated into the electrical enclosure 28, the data module 14 and diagnostics and control module 15 may share processing circuitry.
  • While the data module 14 and diagnostics and control module 15 may both be received within the electrical enclosure 28 of the compressor 10, separating the diagnostics and control module 15 from the data module 14, such that the diagnostics and control module 15 is remotely located from the data module 14 and compressor 10, allows the data module 14 to be used with various diagnostic and control modules. Because the data module 14 essentially serves as a hub for receiving sensor data and for determining non-measured operating parameters of a compressor and/or refrigeration system, the data module 14 may be used with virtually any diagnostics and control module 15.
  • Original equipment manufacturers typically use different diagnostics and control modules and schemes. Therefore, a data module 14 that may be interchanged and used with any diagnostics and control module 15 allows a compressor 10 incorporating such a data module 14 to be used with virtually any diagnostics and control module 15.
  • Those skilled in the art may now appreciate from the foregoing that the broad teachings of the present disclosure may be implemented in a variety of forms. Therefore, while this disclosure has been described in connection with particular examples thereof, the true scope of the disclosure should no be so limited since other modifications will become apparent to the skilled practitioner upon a study of the drawings, the specification and the following claims.

Claims (25)

  1. 1. A compressor comprising a shell, a compression mechanism, a motor, a data module, and a compressor controller, said data module including a processor and a memory, said compressor controller including a processor and a memory, said data module receiving sensed data, storing sensed data in said memory, and communicating sensed data to said compressor controller, said compressor controller controlling a capacity of the compressor based on said sensed data and operable to communicate with a system controller of a refrigeration system.
  2. 2. The compressor of claim 1, wherein said data module processor determines non-measured operating parameters of at least one of the compressor and said refrigeration system based on said sensed data.
  3. 3. The compressor of claim 2, wherein said non-measured operating parameters include subcooling, condenser temperature, condenser temperature difference, suction superheat, discharge superheat, and evaporator temperature.
  4. 4. The compressor of claim 2, wherein said data module communicates said non-measured operating parameters to at least one of said system controller and said compressor controller.
  5. 5. The compressor of claim 2, wherein said data module diagnoses at least one of the compressor and said refrigeration system based on at least one of said sensed data and said non-measured operating parameters.
  6. 6. The compressor of claim 5, wherein said data module communicates said diagnosis to at least one of said system controller and said compressor controller.
  7. 7. The compressor of claim 1, wherein said data module diagnoses at least one of the compressor and said refrigeration system based on said sensed data.
  8. 8. The compressor of claim 7, wherein said data module communicates said diagnosis to at least one of said system controller and said compressor controller.
  9. 9. The compressor of claim 1, wherein said compressor controller diagnoses at least one of the compressor and said refrigeration system based on said sensed data from said data module.
  10. 10. The compressor of claim 9, wherein said compressor controller communicates said diagnosis to said system controller.
  11. 11. The compressor of claim 1, wherein said data module and said compressor controller are attached to the compressor.
  12. 12. For a refrigeration system including a system controller in communication with a compressor controller associated with a compressor, a data module comprising a housing, a processor and a memory, said housing mountable on the compressor, said processor receiving sensed data, storing sensed data in said memory, and operable to communicate sensed data to the compressor controller.
  13. 13. The data module of claim 12, wherein said data module processor determines non-measured operating parameters of at least one of said compressor and said refrigeration system based on said sensed data.
  14. 14. The compressor of claim 14, wherein said non-measured operating parameters include subcooling, condenser temperature, condenser temperature difference, suction superheat, discharge superheat, and evaporator temperature.
  15. 15. The data module of claim 13, wherein said data module processor communicates said non-measured operating parameters to at least one of said system controller and said compressor controller.
  16. 16. The data module of claim 13, wherein said data module processor diagnoses at least one of said compressor and said refrigeration system based on at least one of said sensed data and said non-measured operating parameters.
  17. 17. The data module of claim 13, wherein said data module processor communicates said diagnosis to at least one of said system controller and said compressor controller.
  18. 18. The data module of claim 12, wherein said data module processor diagnoses at least one of said compressor and said refrigeration system based on said sensed data.
  19. 19. The data module of claim 18, wherein said data module processor communicates said diagnosis to at least one of said system controller and said compressor controller.
  20. 20. The data module of claim 12, wherein said compressor controller diagnoses at least one of said compressor and said refrigeration system based on said sensed data from said data module processor.
  21. 21. The data module of claim 20, wherein said compressor controller communicates said diagnosis to said system controller.
  22. 22. A compressor control system comprising:
    a compressor;
    a compressor controller operable to diagnose and/or control said compressor; and
    a data module associated with said compressor and in communication with said compressor controller, said data module receiving sensor data indicative of compressor performance, determining non-measured system operating parameters, and diagnosing said compressor based on at least one of said sensor data and said non-measured system operating parameters, said data module communicating said sensor data, said non-measured system operating parameters, and said diagnosis to said compressor controller.
  23. 23. The compressor of claim 22, wherein said compressor controller determines said non-measured system operating parameters based on said received sensor data and diagnoses said compressor based on at least one of said received sensor data and said determined non-measured system operating parameters, said compressor controller comparing said determined non-measured system operating parameters to said non-measured system operating parameters received from said data module and comparing said determined diagnosis to said diagnosis received from said data module.
  24. 24. A method comprising:
    communicating sensor data to a data module;
    processing said sensor data at said data module to determine non-measured operating parameters of at least one of a compressor and a refrigeration system;
    processing at least one of said sensor data and said determined non-measured operating parameters at said data module to diagnose said at least one compressor and refrigeration system;
    communicating said sensor data, said non-measured operating parameters, and said diagnosis to a system controller;
    determining said non-measured operating parameters at said system controller based on said received sensor data;
    determining said diagnosis at said system controller based on said received sensor data and said determined non-measured operating parameters;
    comparing said received non-measured operating parameters to said determined non-measured operating parameters at said system controller; and
    comparing said received diagnosis to said determined diagnosis at said system controller.
  25. 25. A method comprising:
    communicating sensor data to a data module;
    processing said sensor data at said data module to determine non-measured operating parameters of at least one of a compressor and a refrigeration system;
    processing at least one of said sensor data and said non-measured operating parameters at said data module to diagnose said at least one compressor and refrigeration system;
    storing at least one of said sensor data, said non-measured operating parameters, and said diagnosis in a memory of said data module;
    communicating at least one of said sensor data, said non-measured operating parameters, and said diagnosis to a first system controller;
    replacing said first system controller with a second system controller; and
    communicating at least one of said stored sensor data, said stored non-measured operating parameters, and said stored diagnosis to said second controller.
US11850846 2006-09-07 2007-09-06 Compressor data module Abandoned US20080216494A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US84289806 true 2006-09-07 2006-09-07
US11850846 US20080216494A1 (en) 2006-09-07 2007-09-06 Compressor data module

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US11850846 US20080216494A1 (en) 2006-09-07 2007-09-06 Compressor data module
AU2007292917A AU2007292917B2 (en) 2006-09-07 2007-09-07 Compressor data module
CN 201110349785 CN102435028B (en) 2006-09-07 2007-09-07 Compressor Data Module
EP20070811712 EP2069638B1 (en) 2006-09-07 2007-09-07 Apparatus for a refrigeration system and method
CN 200780032977 CN101512160B (en) 2006-09-07 2007-09-07 Compressor Data Module
PCT/US2007/019563 WO2008030572A1 (en) 2006-09-07 2007-09-07 Compressor data module
CA 2662482 CA2662482A1 (en) 2006-09-07 2007-09-07 Compressor data module
US14255519 US9823632B2 (en) 2006-09-07 2014-04-17 Compressor data module

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US14255519 Continuation US9823632B2 (en) 2006-09-07 2014-04-17 Compressor data module

Publications (1)

Publication Number Publication Date
US20080216494A1 true true US20080216494A1 (en) 2008-09-11

Family

ID=39157554

Family Applications (2)

Application Number Title Priority Date Filing Date
US11850846 Abandoned US20080216494A1 (en) 2006-09-07 2007-09-06 Compressor data module
US14255519 Active 2028-07-27 US9823632B2 (en) 2006-09-07 2014-04-17 Compressor data module

Family Applications After (1)

Application Number Title Priority Date Filing Date
US14255519 Active 2028-07-27 US9823632B2 (en) 2006-09-07 2014-04-17 Compressor data module

Country Status (5)

Country Link
US (2) US20080216494A1 (en)
EP (1) EP2069638B1 (en)
CN (2) CN102435028B (en)
CA (1) CA2662482A1 (en)
WO (1) WO2008030572A1 (en)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009029420A1 (en) * 2007-08-27 2009-03-05 Johnson Controls Technology Company Control method for gas compression
US20090092502A1 (en) * 2007-10-08 2009-04-09 Emerson Climate Technologies, Inc. Compressor having a power factor correction system and method
US20090094998A1 (en) * 2007-10-08 2009-04-16 Emerson Climate Technologies, Inc. System and method for evaluating parameters for a refrigeration system with a variable speed compressor
US20090241592A1 (en) * 2007-10-05 2009-10-01 Emerson Climate Technologies, Inc. Compressor assembly having electronics cooling system and method
US7878006B2 (en) 2004-04-27 2011-02-01 Emerson Climate Technologies, Inc. Compressor diagnostic and protection system and method
US8160827B2 (en) 2007-11-02 2012-04-17 Emerson Climate Technologies, Inc. Compressor sensor module
CN102817847A (en) * 2012-08-09 2012-12-12 上海英格索兰压缩机有限公司 Controller software system of screw air compressor
US8393169B2 (en) 2007-09-19 2013-03-12 Emerson Climate Technologies, Inc. Refrigeration monitoring system and method
US8418483B2 (en) 2007-10-08 2013-04-16 Emerson Climate Technologies, Inc. System and method for calculating parameters for a refrigeration system with a variable speed compressor
US8459053B2 (en) 2007-10-08 2013-06-11 Emerson Climate Technologies, Inc. Variable speed compressor protection system and method
US8539786B2 (en) 2007-10-08 2013-09-24 Emerson Climate Technologies, Inc. System and method for monitoring overheat of a compressor
US8590325B2 (en) * 2006-07-19 2013-11-26 Emerson Climate Technologies, Inc. Protection and diagnostic module for a refrigeration system
US20140214365A1 (en) * 2013-01-28 2014-07-31 Schneider Electric Industries Sas Method for the diagnostic analysis of a heating, ventilation and air-conditioning system (hvac)
US8849613B2 (en) 2007-10-05 2014-09-30 Emerson Climate Technologies, Inc. Vibration protection in a variable speed compressor
US8950206B2 (en) 2007-10-05 2015-02-10 Emerson Climate Technologies, Inc. Compressor assembly having electronics cooling system and method
US8964338B2 (en) 2012-01-11 2015-02-24 Emerson Climate Technologies, Inc. System and method for compressor motor protection
US9140728B2 (en) 2007-11-02 2015-09-22 Emerson Climate Technologies, Inc. Compressor sensor module
US9285802B2 (en) 2011-02-28 2016-03-15 Emerson Electric Co. Residential solutions HVAC monitoring and diagnosis
US9310439B2 (en) 2012-09-25 2016-04-12 Emerson Climate Technologies, Inc. Compressor having a control and diagnostic module
US9310094B2 (en) 2007-07-30 2016-04-12 Emerson Climate Technologies, Inc. Portable method and apparatus for monitoring refrigerant-cycle systems
US9480177B2 (en) 2012-07-27 2016-10-25 Emerson Climate Technologies, Inc. Compressor protection module
US9541907B2 (en) 2007-10-08 2017-01-10 Emerson Climate Technologies, Inc. System and method for calibrating parameters for a refrigeration system with a variable speed compressor
US9551504B2 (en) 2013-03-15 2017-01-24 Emerson Electric Co. HVAC system remote monitoring and diagnosis
US9638436B2 (en) 2013-03-15 2017-05-02 Emerson Electric Co. HVAC system remote monitoring and diagnosis
US9765979B2 (en) 2013-04-05 2017-09-19 Emerson Climate Technologies, Inc. Heat-pump system with refrigerant charge diagnostics
US9803902B2 (en) 2013-03-15 2017-10-31 Emerson Climate Technologies, Inc. System for refrigerant charge verification using two condenser coil temperatures
US9823632B2 (en) 2006-09-07 2017-11-21 Emerson Climate Technologies, Inc. Compressor data module

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104567265A (en) * 2014-11-27 2015-04-29 青岛海尔股份有限公司 Intelligent detecting method for refrigerator

Citations (99)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2054542A (en) * 1934-06-21 1936-09-15 Hoelle William Refrigerating machine indicator
US3735377A (en) * 1971-03-19 1973-05-22 Phillips Petroleum Co Monitoring and shutdown apparatus
US3783681A (en) * 1972-01-22 1974-01-08 Maschf Augsburg Nuernberg Ag Method and apparatus to monitor quality of operation of a piston in a cylinder
US4038061A (en) * 1975-12-29 1977-07-26 Heil-Quaker Corporation Air conditioner control
US4102394A (en) * 1977-06-10 1978-07-25 Energy 76, Inc. Control unit for oil wells
US4146085A (en) * 1977-10-03 1979-03-27 Borg-Warner Corporation Diagnostic system for heat pump
US4161106A (en) * 1977-02-28 1979-07-17 Water Chemists, Inc. Apparatus and method for determining energy waste in refrigeration units
US4325223A (en) * 1981-03-16 1982-04-20 Cantley Robert J Energy management system for refrigeration systems
US4345162A (en) * 1980-06-30 1982-08-17 Honeywell Inc. Method and apparatus for power load shedding
US4372119A (en) * 1979-10-29 1983-02-08 Saab-Scania Aktiebolag Method of avoiding abnormal combination in an internal combination engine and an arrangement for carrying out the method
US4387368A (en) * 1980-12-03 1983-06-07 Borg-Warner Corporation Telemetry system for centrifugal water chilling systems
US4390922A (en) * 1982-02-04 1983-06-28 Pelliccia Raymond A Vibration sensor and electrical power shut off device
US4390321A (en) * 1980-10-14 1983-06-28 American Davidson, Inc. Control apparatus and method for an oil-well pump assembly
US4399548A (en) * 1981-04-13 1983-08-16 Castleberry Kimberly N Compressor surge counter
US4425010A (en) * 1980-11-12 1984-01-10 Reliance Electric Company Fail safe dynamoelectric machine bearing
US4429578A (en) * 1982-03-22 1984-02-07 General Electric Company Acoustical defect detection system
US4441329A (en) * 1982-07-06 1984-04-10 Dawley Robert E Temperature control system
US4496296A (en) * 1982-01-13 1985-01-29 Hitachi, Ltd. Device for pressing orbiting scroll member in scroll type fluid machine
US4502843A (en) * 1980-03-31 1985-03-05 Noodle Corporation Valveless free plunger and system for well pumping
US4520674A (en) * 1983-11-14 1985-06-04 Technology For Energy Corporation Vibration monitoring device
US4583373A (en) * 1984-02-14 1986-04-22 Dunham-Bush, Inc. Constant evaporator pressure slide valve modulator for screw compressor refrigeration system
US4642034A (en) * 1983-11-08 1987-02-10 Sanden Corporation Scroll type compressor with displacement adjusting mechanism
US4653285A (en) * 1985-09-20 1987-03-31 General Electric Company Self-calibrating control methods and systems for refrigeration systems
US4655688A (en) * 1984-05-30 1987-04-07 Itt Industries, Inc. Control for liquid ring vacuum pumps
US4798055A (en) * 1987-10-28 1989-01-17 Kent-Moore Corporation Refrigeration system analyzer
US4831560A (en) * 1986-01-15 1989-05-16 Zaleski James V Method for testing auto electronics systems
US4858676A (en) * 1988-10-05 1989-08-22 Ford Motor Company Airconditioning system for a vehicle
US4909076A (en) * 1987-08-04 1990-03-20 Pruftechik, Dieter Busch & Partner GmbH & Co. Cavitation monitoring device for pumps
US4970496A (en) * 1989-09-08 1990-11-13 Lee Mechanical, Inc. Vehicular monitoring system
US4985857A (en) * 1988-08-19 1991-01-15 General Motors Corporation Method and apparatus for diagnosing machines
US5009075A (en) * 1990-04-20 1991-04-23 American Standard Inc. Fault determination test method for systems including an electronic expansion valve and electronic controller
US5018665A (en) * 1990-02-13 1991-05-28 Hale Fire Pump Company Thermal relief valve
US5042264A (en) * 1990-09-21 1991-08-27 Carrier Corporation Method for detecting and correcting reversing valve failures in heat pump systems having a variable speed compressor
US5103391A (en) * 1987-11-06 1992-04-07 M. T. Mcbrian Inc. Control system for controlling environmental conditions in a closed building or other conditions
US5109700A (en) * 1990-07-13 1992-05-05 Life Systems, Inc. Method and apparatus for analyzing rotating machines
US5115406A (en) * 1990-10-05 1992-05-19 Gateshead Manufacturing Corporation Rotating machinery diagnostic system
US5199855A (en) * 1990-09-27 1993-04-06 Zexel Corporation Variable capacity compressor having a capacity control system using an electromagnetic valve
US5203178A (en) * 1990-10-30 1993-04-20 Norm Pacific Automation Corp. Noise control of air conditioner
US5209400A (en) * 1991-03-07 1993-05-11 John M. Winslow Portable calculator for refrigeration heating and air conditioning equipment service
US5224835A (en) * 1992-09-02 1993-07-06 Viking Pump, Inc. Shaft bearing wear detector
US5248244A (en) * 1992-12-21 1993-09-28 Carrier Corporation Scroll compressor with a thermally responsive bypass valve
US5279458A (en) * 1991-08-12 1994-01-18 Carrier Corporation Network management control
US5290154A (en) * 1992-12-23 1994-03-01 American Standard Inc. Scroll compressor reverse phase and high discharge temperature protection
US5291752A (en) * 1991-05-13 1994-03-08 Alvarez Robert J Integrally formed, modular ice cuber having a stainless steel evaporator and a microcontroller
US5299504A (en) * 1992-06-30 1994-04-05 Technical Rail Products, Incorporated Self-propelled rail heater car with movable induction heating coils
US5303560A (en) * 1993-04-15 1994-04-19 Thermo King Corporation Method and apparatus for monitoring and controlling the operation of a refrigeration unit
US5311451A (en) * 1987-11-06 1994-05-10 M. T. Mcbrian Company, Inc. Reconfigurable controller for monitoring and controlling environmental conditions
US5320506A (en) * 1990-10-01 1994-06-14 Copeland Corporation Oldham coupling for scroll compressor
US5336058A (en) * 1992-02-18 1994-08-09 Sanden Corporation Scroll-type compressor with variable displacement mechanism
US5335507A (en) * 1992-03-04 1994-08-09 Ecoair Corporated Control system for an air conditioning/refrigeration system
US5381692A (en) * 1992-12-09 1995-01-17 United Technologies Corporation Bearing assembly monitoring system
US5416781A (en) * 1992-03-17 1995-05-16 Johnson Service Company Integrated services digital network based facility management system
US5423192A (en) * 1993-08-18 1995-06-13 General Electric Company Electronically commutated motor for driving a compressor
US5423190A (en) * 1994-03-28 1995-06-13 Thermo King Corporation Apparatus for evacuating and charging a refrigeration unit
US5446677A (en) * 1994-04-28 1995-08-29 Johnson Service Company Diagnostic system for use in an environment control network
US5481481A (en) * 1992-11-23 1996-01-02 Architectural Engergy Corporation Automated diagnostic system having temporally coordinated wireless sensors
US5499512A (en) * 1994-05-09 1996-03-19 Thermo King Corporation Methods and apparatus for converting a manually operable refrigeration unit to remote operation
US5511387A (en) * 1993-05-03 1996-04-30 Copeland Corporation Refrigerant recovery system
US5535597A (en) * 1993-08-11 1996-07-16 Samsung Electronics Co., Ltd. Refrigerator and method for controlling the same
US5602757A (en) * 1994-10-20 1997-02-11 Ingersoll-Rand Company Vibration monitoring system
US5610339A (en) * 1994-10-20 1997-03-11 Ingersoll-Rand Company Method for collecting machine vibration data
US5616829A (en) * 1995-03-09 1997-04-01 Teledyne Industries Inc. Abnormality detection/suppression system for a valve apparatus
US5641270A (en) * 1995-07-31 1997-06-24 Waters Investments Limited Durable high-precision magnetostrictive pump
US5655379A (en) * 1995-10-27 1997-08-12 General Electric Company Refrigerant level control in a refrigeration system
US5795381A (en) * 1996-09-09 1998-08-18 Memc Electrical Materials, Inc. SIO probe for real-time monitoring and control of oxygen during czochralski growth of single crystal silicon
US5807336A (en) * 1996-08-02 1998-09-15 Sabratek Corporation Apparatus for monitoring and/or controlling a medical device
US5947701A (en) * 1998-09-16 1999-09-07 Scroll Technologies Simplified scroll compressor modulation control
US5956658A (en) * 1993-09-18 1999-09-21 Diagnostic Instruments Limited Portable data collection apparatus for collecting maintenance data from a field tour
US5987903A (en) * 1998-11-05 1999-11-23 Daimlerchrysler Corporation Method and device to detect the charge level in air conditioning systems
US6035661A (en) * 1996-09-30 2000-03-14 Sanyo Electric Co., Ltd. Refrigerant compressor and cooling apparatus comprising the same
US6042344A (en) * 1998-07-13 2000-03-28 Carrier Corporation Control of scroll compressor at shutdown to prevent unpowered reverse rotation
US6050780A (en) * 1995-10-25 2000-04-18 Ishikawajima-Harima Heavy Industries Co., Ltd. Method for driving a high speed compressor
US6057771A (en) * 1997-06-24 2000-05-02 Planer Products Ltd. Fluid delivery apparatus
US6081750A (en) * 1991-12-23 2000-06-27 Hoffberg; Steven Mark Ergonomic man-machine interface incorporating adaptive pattern recognition based control system
US6082971A (en) * 1998-10-30 2000-07-04 Ingersoll-Rand Company Compressor control system and method
US6092378A (en) * 1997-12-22 2000-07-25 Carrier Corporation Vapor line pressure control
US6199018B1 (en) * 1998-03-04 2001-03-06 Emerson Electric Co. Distributed diagnostic system
US20010005320A1 (en) * 1999-11-30 2001-06-28 Matsushita Elecric Industrial Co., Ltd. Linear compressor driving device, medium and information assembly
US6276901B1 (en) * 1999-12-13 2001-08-21 Tecumseh Products Company Combination sight glass and sump oil level sensor for a hermetic compressor
US6279332B1 (en) * 1999-08-05 2001-08-28 Samsung Electronics Co., Ltd. Performance testing method of air conditioner
US6360551B1 (en) * 1997-05-30 2002-03-26 Ecotechnics S.P.A. Method and device for testing and diagnosing an automotive air conditioning system
US6438981B1 (en) * 2000-06-06 2002-08-27 Jay Daniel Whiteside System for analyzing and comparing current and prospective refrigeration packages
US6453687B2 (en) * 2000-01-07 2002-09-24 Robertshaw Controls Company Refrigeration monitor unit
US6505475B1 (en) * 1999-08-20 2003-01-14 Hudson Technologies Inc. Method and apparatus for measuring and improving efficiency in refrigeration systems
US20030094004A1 (en) * 1995-06-07 2003-05-22 Pham Hung M. Adaptive control for a cooling system
US6571586B1 (en) * 1997-10-16 2003-06-03 Michael Ritson Portable wringer
US20030108430A1 (en) * 2001-12-10 2003-06-12 Matsushita Electric Industrial Co., Ltd. Driving apparatus of a linear compressor
US6601397B2 (en) * 2001-03-16 2003-08-05 Copeland Corporation Digital scroll condensing unit controller
US6711911B1 (en) * 2002-11-21 2004-03-30 Carrier Corporation Expansion valve control
US20040184627A1 (en) * 2003-03-21 2004-09-23 Kost Michael A. Systems and methods for protection of audio amplifier circuits
US20040187502A1 (en) * 2001-03-27 2004-09-30 Nagaraj Jayanth Compressor diagnostic system
US20050103036A1 (en) * 2002-04-10 2005-05-19 Daikin Industries , Ltd. Compressor unit and refrigerator using the unit
US20050166610A1 (en) * 2000-11-22 2005-08-04 Nagaraj Jayanth Cooling system diagnostic system apparatus and method
US6934862B2 (en) * 2000-01-07 2005-08-23 Robertshaw Controls Company Appliance retrofit monitoring device with a memory storing an electronic signature
US20050235660A1 (en) * 2004-04-27 2005-10-27 Pham Hung M Compressor diagnostic and protection system
US6981384B2 (en) * 2004-03-22 2006-01-03 Carrier Corporation Monitoring refrigerant charge
US6986469B2 (en) * 1997-09-19 2006-01-17 Electric City Corporation Method and apparatus for energy recovery in an environmental control system
US7079967B2 (en) * 2001-05-11 2006-07-18 Field Diagnostic Services, Inc. Apparatus and method for detecting faults and providing diagnostics in vapor compression cycle equipment
US7491034B2 (en) * 2003-12-30 2009-02-17 Emerson Climate Technologies, Inc. Compressor protection and diagnostic system

Family Cites Families (1200)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2296822A (en) 1938-04-23 1942-09-22 Westinghouse Electric & Mfg Co Air conditioning apparatus
DE764179C (en) 1938-12-28 1953-04-27 Klein Compressor unit with pressure control
US2631050A (en) 1949-03-31 1953-03-10 Worthington Corp Automatic shutdown seal system for centrifugal compressors
NL277159A (en) 1952-01-18
US3082951A (en) 1953-07-01 1963-03-26 Univ Columbia Method for calculating performance of refrigeration apparatus
US2804839A (en) 1954-12-14 1957-09-03 William W Hallinan Air filter alarm systems and air filter alarm units
US2962702A (en) 1956-02-20 1960-11-29 Westinghouse Electric Corp Remote metering
DE1144461B (en) 1956-07-10 1963-02-28 Sauter Elektr App Circuit arrangement for the stepwise power control of air conditioners
US2961606A (en) 1958-06-16 1960-11-22 Gen Electric Capacitor testing device
US2978879A (en) 1958-06-30 1961-04-11 Gen Motors Corp Refrigerating apparatus
US3027865A (en) 1959-01-06 1962-04-03 Honeywell Regulator Co Clogged filter indicator
US3047696A (en) 1959-12-11 1962-07-31 Gen Motors Corp Superheat control
DE1403516A1 (en) 1960-02-26 1968-10-31 Linde Ag Method for regulating the flow rate of rotary compressors of sliding vane type and apparatus for performing the method
US3107843A (en) 1961-01-23 1963-10-22 Electro Therm Compensating thermostatic control system for compressors
DE1403467A1 (en) 1961-06-29 1969-10-09 Vogtlandgruben Lengenfeld Veb Control and monitoring device for single and multi-stage reciprocating, rotary and centrifugal compressors
US3232519A (en) 1963-05-07 1966-02-01 Vilter Manufacturing Corp Compressor protection system
US3170304A (en) 1963-09-26 1965-02-23 Carrier Corp Refrigeration system control
US3278111A (en) 1964-07-27 1966-10-11 Lennox Ind Inc Device for detecting compressor discharge gas temperature
US3327197A (en) 1964-09-30 1967-06-20 Barlow Controls Inc Motor starting device including a surge limiter and cutout means
US3400374A (en) 1965-06-16 1968-09-03 Robertshaw Controls Co Computerized control systems
US3339164A (en) 1965-10-20 1967-08-29 Texas Instruments Inc Temperature sensor
US3581281A (en) 1967-03-28 1971-05-25 Cornell Aeronautical Labor Inc Pattern recognition computer
US3513662A (en) 1968-11-12 1970-05-26 Armour & Co Feedback control system for sequencing motors
US3665399A (en) 1969-09-24 1972-05-23 Worthington Corp Monitoring and display system for multi-stage compressor
US3585451A (en) 1969-12-24 1971-06-15 Borg Warner Solid state motor overload protection system
US3660718A (en) 1970-06-08 1972-05-02 Honeywell Inc Automatically resetting motor protection circuit responsive to overcurrent and overtemperature
US3653783A (en) 1970-08-17 1972-04-04 Cooper Ind Inc Compressor output control apparatus
US3665339A (en) 1970-09-25 1972-05-23 Atomic Energy Commission Self-pulsed microwave oscillator
US3707851A (en) 1970-10-28 1973-01-02 Mach Ice Co Refrigeration system efficiency monitor
US3697953A (en) 1970-12-28 1972-10-10 Honeywell Inc System for monitoring abnormal system operations in a system having a central station and a plurality of remote stations
US3742302A (en) 1971-10-12 1973-06-26 Carrier Corp Motor relay protection for refrigerant compressor motors
US3742303A (en) 1971-11-08 1973-06-26 Bec Prod Inc Compressor protector system
US3729949A (en) 1971-12-06 1973-05-01 J Talbot Refrigerant charging control unit
US3820074A (en) 1971-12-06 1974-06-25 Tull Aviation Corp Remote operating condition data acquisition system
US3767328A (en) 1972-07-19 1973-10-23 Gen Electric Rotary compressor with capacity modulation
US3777240A (en) 1972-09-21 1973-12-04 Carrier Corp Thermostat chatter protection for refrigeration compressor motors
US3950962A (en) 1973-05-01 1976-04-20 Kabushiki Kaisha Saginomiya Seisakusho System for defrosting in a heat pump
USRE29450E (en) 1973-10-17 1977-10-18 Martin Marietta Corporation Machine operating condition monitoring system
US3882305A (en) 1974-01-15 1975-05-06 Kearney & Trecker Corp Diagnostic communication system for computer controlled machine tools
US3918268A (en) 1974-01-23 1975-11-11 Halstead Ind Inc Heat pump with frost-free outdoor coil
US3935519A (en) 1974-01-24 1976-01-27 Lennox Industries Inc. Control apparatus for two-speed compressor
US4153003A (en) 1974-04-22 1979-05-08 Wm. M. & Isabel Willis Filter condition indicator
JPS587901B2 (en) 1974-05-29 1983-02-12 Hitachi Ltd
US5125067A (en) 1974-06-24 1992-06-23 General Electric Company Motor controls, refrigeration systems and methods of motor operation and control
US3927712A (en) 1974-10-11 1975-12-23 Iwatani & Co Electronic control system of an air conditioning apparatus
US3924972A (en) 1974-10-29 1975-12-09 Vilter Manufacturing Corp Control means for a variable capacity rotary screw compressor
US3960011A (en) 1974-11-18 1976-06-01 Harris Corporation First fault indicator for engines
US4066869A (en) 1974-12-06 1978-01-03 Carrier Corporation Compressor lubricating oil heater control
US4006460A (en) 1974-12-10 1977-02-01 Westinghouse Electric Corporation Computer controlled security system
US3978382A (en) 1974-12-16 1976-08-31 Lennox Industries Inc. Control apparatus for two-speed, single phase compressor
US4060716A (en) 1975-05-19 1977-11-29 Rockwell International Corporation Method and apparatus for automatic abnormal events monitor in operating plants
US4027289A (en) 1975-06-26 1977-05-31 Toman Donald J Operating condition data system
US3998068A (en) 1975-07-17 1976-12-21 William Chirnside Fan delay humidistat
US4018584A (en) 1975-08-19 1977-04-19 Lennox Industries, Inc. Air conditioning system having latent and sensible cooling capability
US4090248A (en) 1975-10-24 1978-05-16 Powers Regulator Company Supervisory and control system for environmental conditioning equipment
US4034570A (en) 1975-12-29 1977-07-12 Heil-Quaker Corporation Air conditioner control
US4045973A (en) 1975-12-29 1977-09-06 Heil-Quaker Corporation Air conditioner control
US4019172A (en) 1976-01-19 1977-04-19 Honeywell Inc. Central supervisory and control system generating 16-bit output
US4046532A (en) 1976-07-14 1977-09-06 Honeywell Inc. Refrigeration load shedding control device
ES461192A1 (en) 1976-07-29 1978-12-01 Matsushita Electric Ind Co Ltd A heat pump.
USRE30242E (en) 1976-09-07 1980-04-01 Carrier Corporation Heat pump system
US4102150A (en) 1976-11-01 1978-07-25 Borg-Warner Corporation Control system for refrigeration apparatus
JPS6048638B2 (en) 1976-11-29 1985-10-28 Hitachi Ltd
US4112703A (en) 1976-12-27 1978-09-12 Borg-Warner Corporation Refrigeration control system
FR2394769B1 (en) 1977-01-05 1980-03-28 Messier Fa
US4104888A (en) 1977-01-31 1978-08-08 Carrier Corporation Defrost control for heat pumps
US4137057A (en) 1977-02-04 1979-01-30 Kramer Trenton Co. Refrigerating systems with multiple evaporator fan and step control therefor
US4132086A (en) 1977-03-01 1979-01-02 Borg-Warner Corporation Temperature control system for refrigeration apparatus
US4105063A (en) 1977-04-27 1978-08-08 General Electric Company Space air conditioning control system and apparatus
US4151725A (en) 1977-05-09 1979-05-01 Borg-Warner Corporation Control system for regulating large capacity rotating machinery
US4271898A (en) 1977-06-27 1981-06-09 Freeman Edward M Economizer comfort index control
US4136730A (en) 1977-07-19 1979-01-30 Kinsey Bernard B Heating and cooling efficiency control
US4137725A (en) 1977-08-29 1979-02-06 Fedders Corporation Compressor control for a reversible heat pump
US4205381A (en) 1977-08-31 1980-05-27 United Technologies Corporation Energy conservative control of heating, ventilating, and air conditioning (HVAC) systems
US4178988A (en) 1977-11-10 1979-12-18 Carrier Corporation Control for a combination furnace and heat pump system
US4143707A (en) 1977-11-21 1979-03-13 The Trane Company Air conditioning apparatus including a heat pump
US4244182A (en) 1977-12-20 1981-01-13 Emerson Electric Co. Apparatus for controlling refrigerant feed rate in a refrigeration system
US4197717A (en) 1977-12-23 1980-04-15 General Electric Company Household refrigerator including a vacation switch
US4156350A (en) 1977-12-27 1979-05-29 General Electric Company Refrigeration apparatus demand defrost control system and method
US4173871A (en) 1977-12-27 1979-11-13 General Electric Company Refrigeration apparatus demand defrost control system and method
US4448038A (en) 1979-10-01 1984-05-15 Sporlan Valve Company Refrigeration control system for modulating electrically-operated expansion valves
US4257795A (en) 1978-04-06 1981-03-24 Dunham-Bush, Inc. Compressor heat pump system with maximum and minimum evaporator ΔT control
JPS5749105Y2 (en) 1978-04-26 1982-10-27
US4233818A (en) 1978-06-23 1980-11-18 Lastinger William R Heat exchange interface apparatus
US4259847A (en) 1978-08-16 1981-04-07 The Trane Company Stepped capacity constant volume building air conditioning system
US4281358A (en) 1978-09-01 1981-07-28 Texas Instruments Incorporated Multifunction dynamoelectric protection system
US4227862A (en) 1978-09-19 1980-10-14 Frick Company Solid state compressor control system
US4336001A (en) 1978-09-19 1982-06-22 Frick Company Solid state compressor control system
US4217761A (en) 1978-09-28 1980-08-19 Cornaire James L Heat pump output indicator
US4246763A (en) 1978-10-24 1981-01-27 Honeywell Inc. Heat pump system compressor fault detector
US4209994A (en) 1978-10-24 1980-07-01 Honeywell Inc. Heat pump system defrost control
JPS5819109B2 (en) 1978-11-10 1983-04-16 Hajime Sangyo
US4211089A (en) 1978-11-27 1980-07-08 Honeywell Inc. Heat pump wrong operational mode detector and control system
US4220010A (en) 1978-12-07 1980-09-02 Honeywell Inc. Loss of refrigerant and/or high discharge temperature protection for heat pumps
US4251988A (en) 1978-12-08 1981-02-24 Amf Incorporated Defrosting system using actual defrosting time as a controlling parameter
US4236379A (en) 1979-01-04 1980-12-02 Honeywell Inc. Heat pump compressor crankcase low differential temperature detection and control system
US4270174A (en) 1979-02-05 1981-05-26 Sun Electric Corporation Remote site engine test techniques
US4290480A (en) 1979-03-08 1981-09-22 Alfred Sulkowski Environmental control system
JPS628327B2 (en) 1979-05-09 1987-02-21 Nippon Denso Co
JPS55162571A (en) 1979-06-01 1980-12-17 Toyoda Automatic Loom Works Protection apparatus for refrigerant compressor
US4680940A (en) 1979-06-20 1987-07-21 Vaughn Eldon D Adaptive defrost control and method
US4376926A (en) 1979-06-27 1983-03-15 Texas Instruments Incorporated Motor protector calibratable by housing deformation having improved sealing and compactness
JPS5610639A (en) 1979-07-04 1981-02-03 Hitachi Ltd Operating method for refrigerator
US4232530A (en) 1979-07-12 1980-11-11 Honeywell Inc. Heat pump system compressor start fault detector
US4365983A (en) 1979-07-13 1982-12-28 Tyler Refrigeration Corporation Energy saving refrigeration system
US5265434A (en) 1979-07-31 1993-11-30 Alsenz Richard H Method and apparatus for controlling capacity of a multiple-stage cooling system
US4831832A (en) 1979-07-31 1989-05-23 Alsenz Richard H Method and apparatus for controlling capacity of multiple compressors refrigeration system
US5115644A (en) 1979-07-31 1992-05-26 Alsenz Richard H Method and apparatus for condensing and subcooling refrigerant
US4267702A (en) 1979-08-13 1981-05-19 Ranco Incorporated Refrigeration system with refrigerant flow controlling valve
US4306293A (en) 1979-08-30 1981-12-15 Marathe Sharad M Energy monitoring system
CA1146650A (en) 1979-10-01 1983-05-17 Lee E. Sumner, Jr. Microcomputer based fault detection and indicator control system
US4321529A (en) 1979-10-02 1982-03-23 Simmonds Charles W Power factor metering device
JPS594616B2 (en) 1979-10-15 1984-01-31 Tokyo Shibaura Electric Co
JPS6117683B2 (en) 1979-10-20 1986-05-08 Diesel Kiki Co
US4248051A (en) 1979-10-29 1981-02-03 Darcy Jon J System and method for controlling air conditioning systems
US4284849A (en) 1979-11-14 1981-08-18 Gte Products Corporation Monitoring and signalling system
US4307775A (en) 1979-11-19 1981-12-29 The Trane Company Current monitoring control for electrically powered devices
GB2064818B (en) 1979-11-30 1983-11-23 Monitoring the operation of an industrial installation
JPS5919273B2 (en) 1979-12-05 1984-05-04 Hitachi Ltd
CA1151265A (en) 1979-12-26 1983-08-02 Phil J. Karns Compressor motor unit and a method of troubleshooting power supply circuits therefor
US4301660A (en) 1980-02-11 1981-11-24 Honeywell Inc. Heat pump system compressor fault detector
US4406133A (en) 1980-02-21 1983-09-27 The Trane Company Control and method for defrosting a heat pump outdoor heat exchanger
US4338790A (en) 1980-02-21 1982-07-13 The Trane Company Control and method for defrosting a heat pump outdoor heat exchanger
US4296727A (en) 1980-04-02 1981-10-27 Micro-Burner Systems Corporation Furnace monitoring system
US4286438A (en) 1980-05-02 1981-09-01 Whirlpool Corporation Condition responsive liquid line valve for refrigeration appliance
US4346755A (en) 1980-05-21 1982-08-31 General Electric Company Two stage control circuit for reversible air cycle heat pump
US4351163A (en) 1980-07-11 1982-09-28 Johannsen Donald L Air conducting mechanism
US4356703A (en) 1980-07-31 1982-11-02 Mcquay-Perfex Inc. Refrigeration defrost control
US4333317A (en) 1980-08-04 1982-06-08 General Electric Company Superheat controller
EP0045659B1 (en) 1980-08-05 1984-04-18 The University Of Melbourne Control of vapour compression cycle refrigeration systems
US4418388B1 (en) 1980-08-14 1998-08-25 Spx Corp Engine waveford pattern analyzer
JPS6343589B2 (en) 1980-08-30 1988-08-31 Toyota Jido Shotsuki Seisakusho Kk
US4463576A (en) 1980-09-22 1984-08-07 General Motors Corporation Solid state clutch cycler with charge protection
US4328680A (en) 1980-10-14 1982-05-11 General Electric Company Heat pump defrost control apparatus
US4338791A (en) 1980-10-14 1982-07-13 General Electric Company Microcomputer control for heat pump system
US4381549A (en) 1980-10-14 1983-04-26 Trane Cac, Inc. Automatic fault diagnostic apparatus for a heat pump air conditioning system
US4333316A (en) 1980-10-14 1982-06-08 General Electric Company Automatic control apparatus for a heat pump system
US4402054A (en) 1980-10-15 1983-08-30 Westinghouse Electric Corp. Method and apparatus for the automatic diagnosis of system malfunctions
US4370098A (en) 1980-10-20 1983-01-25 Esco Manufacturing Company Method and apparatus for monitoring and controlling on line dynamic operating conditions
US4384462A (en) 1980-11-20 1983-05-24 Friedrich Air Conditioning & Refrigeration Co. Multiple compressor refrigeration system and controller thereof
US4505125A (en) 1981-01-26 1985-03-19 Baglione Richard A Super-heat monitoring and control device for air conditioning refrigeration systems
US4557317A (en) 1981-02-20 1985-12-10 Harmon Jr Kermit S Temperature control systems with programmed dead-band ramp and drift features
US4361273A (en) 1981-02-25 1982-11-30 Levine Michael R Electronic humidity control
FR2501304B1 (en) 1981-03-03 1986-08-22 Realisations Diffusion Ind Method and motor protection device for a hermetic compressor motor assembly
US4412788A (en) 1981-04-20 1983-11-01 Durham-Bush, Inc. Control system for screw compressor
US4387578A (en) 1981-04-20 1983-06-14 Whirlpool Corporation Electronic sensing and display system for a refrigerator
US4490986A (en) 1981-04-20 1985-01-01 Whirlpool Corporation Electronic sensing and display system for a refrigerator
US4415896A (en) 1981-06-09 1983-11-15 Adec, Inc. Computer controlled energy monitoring system
JPS57207773A (en) 1981-06-17 1982-12-20 Taiheiyo Kogyo Kk Method of controlling cooling circuit and its control valve
US4407138A (en) 1981-06-30 1983-10-04 Honeywell Inc. Heat pump system defrost control system with override
JPH0355736B2 (en) 1981-07-10 1991-08-26
US4527247A (en) 1981-07-31 1985-07-02 Ibg International, Inc. Environmental control system
US4471632A (en) 1981-09-09 1984-09-18 Nippondenso Co., Ltd. Method of controlling refrigeration system for automotive air conditioner
US4751501A (en) 1981-10-06 1988-06-14 Honeywell Inc. Variable air volume clogged filter detector
JPH0357316B2 (en) 1981-10-21 1991-08-30
US4395886A (en) 1981-11-04 1983-08-02 Thermo King Corporation Refrigerant charge monitor and method for transport refrigeration system
US4463571A (en) 1981-11-06 1984-08-07 Wiggs John W Diagnostic monitor system for heat pump protection
US4395887A (en) 1981-12-14 1983-08-02 Amf Incorporated Defrost control system
JPS58108361A (en) 1981-12-21 1983-06-28 Sankyo Denki Co Ltd Controller for air conditioner for car
JPS6354567B2 (en) 1981-12-23 1988-10-28 Mitsubishi Heavy Ind Ltd
JPS58120054A (en) 1982-01-09 1983-07-16 Mitsubishi Electric Corp Air conditioner
US4434390A (en) 1982-01-15 1984-02-28 Westinghouse Electric Corp. Motor control apparatus with parallel input, serial output signal conditioning means
US4563624A (en) 1982-02-11 1986-01-07 Copeland Corporation Variable speed refrigeration compressor
US4479389A (en) 1982-02-18 1984-10-30 Allied Corporation Tuned vibration detector
US4431388A (en) 1982-03-05 1984-02-14 The Trane Company Controlled suction unloading in a scroll compressor
US4463574A (en) 1982-03-15 1984-08-07 Honeywell Inc. Optimized selection of dissimilar chillers
US4467613A (en) 1982-03-19 1984-08-28 Emerson Electric Co. Apparatus for and method of automatically adjusting the superheat setting of a thermostatic expansion valve
US4449375A (en) 1982-03-29 1984-05-22 Carrier Corporation Method and apparatus for controlling the operation of an indoor fan associated with an air conditioning unit
US4470266A (en) 1982-03-29 1984-09-11 Carrier Corporation Timer speedup for servicing an air conditioning unit with an electronic control
US4494383A (en) 1982-04-22 1985-01-22 Mitsubishi Denki Kabushiki Kaisha Air-conditioner for an automobile
US4432232A (en) 1982-05-18 1984-02-21 The United States Of America As Represented By The United States Department Of Energy Device and method for measuring the coefficient of performance of a heat pump
JPS6361581B2 (en) 1982-05-26 1988-11-29
JPH0331981B2 (en) 1982-06-03 1991-05-09 Mitsubishi Heavy Ind Ltd
US4630670A (en) 1983-12-19 1986-12-23 Carrier Corporation Variable volume multizone system
WO1984000603A1 (en) 1982-07-22 1984-02-16 Donald L Bendikson Refrigeration system energy controller
US4510576A (en) 1982-07-26 1985-04-09 Honeywell Inc. Specific coefficient of performance measuring device
US4497031A (en) 1982-07-26 1985-01-29 Johnson Service Company Direct digital control apparatus for automated monitoring and control of building systems
US4548549A (en) 1982-09-10 1985-10-22 Frick Company Micro-processor control of compression ratio at full load in a helical screw rotary compressor responsive to compressor drive motor current
US4470092A (en) 1982-09-27 1984-09-04 Allen-Bradley Company Programmable motor protector
US4843575A (en) 1982-10-21 1989-06-27 Crane Harold E Interactive dynamic real-time management system
US4465229A (en) 1982-10-25 1984-08-14 Honeywell, Inc. Humidity comfort offset circuit
US4467230A (en) 1982-11-04 1984-08-21 Rovinsky Robert S Alternating current motor speed control
US4431134A (en) 1982-11-08 1984-02-14 Microcomm Corporation Digital thermostat with protection against power interruption
US4510547A (en) 1982-11-12 1985-04-09 Johnson Service Company Multi-purpose compressor controller
US4630572A (en) 1982-11-18 1986-12-23 Evans Cooling Associates Boiling liquid cooling system for internal combustion engines
JPH0226155B2 (en) 1982-11-22 1990-06-07 Mitsubishi Electric Corp
EP0114646B1 (en) 1983-01-19 1988-09-07 Hitachi Construction Machinery Co., Ltd. Failure detection system for hydraulic pump
US4474024A (en) 1983-01-20 1984-10-02 Carrier Corporation Defrost control apparatus and method
US4502842A (en) 1983-02-02 1985-03-05 Colt Industries Operating Corp. Multiple compressor controller and method
JPS59145392A (en) 1983-02-07 1984-08-20 Hitachi Ltd Method of controlling capacity of screw-type compressor
US4555057A (en) 1983-03-03 1985-11-26 Jfec Corporation & Associates Heating and cooling system monitoring apparatus
US4512161A (en) 1983-03-03 1985-04-23 Control Data Corporation Dew point sensitive computer cooling system
JPH0340295B2 (en) 1983-03-17 1991-06-18
US4716582A (en) 1983-04-27 1987-12-29 Phonetics, Inc. Digital and synthesized speech alarm system
US4558181A (en) 1983-04-27 1985-12-10 Phonetics, Inc. Portable device for monitoring local area
US4502084A (en) 1983-05-23 1985-02-26 Carrier Corporation Air conditioning system trouble reporter
US4484452A (en) 1983-06-23 1984-11-27 The Trane Company Heat pump refrigerant charge control system
JPH0758069B2 (en) 1983-09-09 1995-06-21 株式会社日立製作所 The motor control device of the compressor
US4550770A (en) 1983-10-04 1985-11-05 White Consolidated Industries, Inc. Reverse cycle room air conditioner with auxilliary heat actuated at low and high outdoor temperatures
US4567733A (en) 1983-10-05 1986-02-04 Hiross, Inc. Economizing air conditioning system of increased efficiency of heat transfer selectively from liquid coolant or refrigerant to air
US4460123A (en) 1983-10-17 1984-07-17 Roberts-Gordon Appliance Corp. Apparatus and method for controlling the temperature of a space
US4626753A (en) 1983-10-28 1986-12-02 Aluminum Company Of America Motor speed control by measurement of motor temperature
US4523435A (en) 1983-12-19 1985-06-18 Carrier Corporation Method and apparatus for controlling a refrigerant expansion valve in a refrigeration system
US4568909A (en) 1983-12-19 1986-02-04 United Technologies Corporation Remote elevator monitoring system
US4523436A (en) 1983-12-22 1985-06-18 Carrier Corporation Incrementally adjustable electronic expansion valve
US4538420A (en) 1983-12-27 1985-09-03 Honeywell Inc. Defrost control system for a refrigeration heat pump apparatus
JPH0239709B2 (en) 1983-12-28 1990-09-06 Tokyo Shibaura Electric Co Reitosaikurunoseigyohoho
JPH0481101B2 (en) 1984-01-06 1992-12-22 Misawa Homes Co
US4627484A (en) 1984-01-09 1986-12-09 Visual Information Institute, Inc. Heat pump control system with defrost cycle monitoring
US4627483A (en) 1984-01-09 1986-12-09 Visual Information Institute, Inc. Heat pump control system
JPH0452396B2 (en) 1984-01-11 1992-08-21 Hitachi Ltd
US4593367A (en) 1984-01-16 1986-06-03 Itt Corporation Probabilistic learning element
US4620286A (en) 1984-01-16 1986-10-28 Itt Corporation Probabilistic learning element
US4555910A (en) 1984-01-23 1985-12-03 Borg-Warner Corporation Coolant/refrigerant temperature control system
JPH0635895B2 (en) 1984-03-09 1994-05-11 株式会社日立製作所 The operation of the heat pump type air conditioner control method and a heat pump type air conditioner
US4549403A (en) 1984-04-06 1985-10-29 Carrier Corporation Method and control system for protecting an evaporator in a refrigeration system against freezeups
US4527399A (en) 1984-04-06 1985-07-09 Carrier Corporation High-low superheat protection for a refrigeration system compressor
US4545210A (en) 1984-04-06 1985-10-08 Carrier Corporation Electronic program control for a refrigeration unit
US4549404A (en) 1984-04-09 1985-10-29 Carrier Corporation Dual pump down cycle for protecting a compressor in a refrigeration system
US4649515A (en) 1984-04-30 1987-03-10 Westinghouse Electric Corp. Methods and apparatus for system fault diagnosis and control
US4517468A (en) 1984-04-30 1985-05-14 Westinghouse Electric Corp. Diagnostic system and method
US4612775A (en) 1984-05-04 1986-09-23 Kysor Industrial Corporation Refrigeration monitor and alarm system
US4553400A (en) 1984-05-04 1985-11-19 Kysor Industrial Corporation Refrigeration monitor and alarm system
US4574871A (en) 1984-05-07 1986-03-11 Parkinson David W Heat pump monitor apparatus for fault detection in a heat pump system
US4539820A (en) 1984-05-14 1985-09-10 Carrier Corporation Protective capacity control system for a refrigeration system
US4589060A (en) 1984-05-14 1986-05-13 Carrier Corporation Microcomputer system for controlling the capacity of a refrigeration system
US4538422A (en) 1984-05-14 1985-09-03 Carrier Corporation Method and control system for limiting compressor capacity in a refrigeration system upon a recycle start
US4535607A (en) 1984-05-14 1985-08-20 Carrier Corporation Method and control system for limiting the load placed on a refrigeration system upon a recycle start
US4648044A (en) 1984-06-06 1987-03-03 Teknowledge, Inc. Basic expert system tool
US4563877A (en) 1984-06-12 1986-01-14 Borg-Warner Corporation Control system and method for defrosting the outdoor coil of a heat pump
DE3422398A1 (en) 1984-06-15 1985-12-19 Knorr Bremse Gmbh Method and apparatus for operating a screw compressor installation
US4685615A (en) 1984-12-17 1987-08-11 Hart Douglas R S Diagnostic thermostat
US4899551A (en) 1984-07-23 1990-02-13 Morton Weintraub Air conditioning system, including a means and method for controlling temperature, humidity and air velocity
JPH0360025B2 (en) 1984-07-26 1991-09-12 Sanyo Electric Co
US4745767A (en) 1984-07-26 1988-05-24 Sanyo Electric Co., Ltd. System for controlling flow rate of refrigerant
US4909041A (en) 1984-07-27 1990-03-20 Uhr Corporation Residential heating, cooling and energy management system
US4644479A (en) 1984-07-31 1987-02-17 Westinghouse Electric Corp. Diagnostic apparatus
US4642782A (en) 1984-07-31 1987-02-10 Westinghouse Electric Corp. Rule based diagnostic system with dynamic alteration capability
US4651535A (en) 1984-08-08 1987-03-24 Alsenz Richard H Pulse controlled solenoid valve
US4697431A (en) 1984-08-08 1987-10-06 Alsenz Richard H Refrigeration system having periodic flush cycles
JPH065069B2 (en) 1984-08-11 1994-01-19 株式会社豊田自動織機製作所 Sucrose - rising in Le compressor Shiyotsuku relaxation mechanism
US4575318A (en) 1984-08-16 1986-03-11 Sundstrand Corporation Unloading of scroll compressors
USRE33775E (en) 1984-08-22 1991-12-24 Emerson Electric Co. Pulse controlled expansion valve for multiple evaporators and method of controlling same
JPH0755617B2 (en) 1984-09-17 1995-06-14 株式会社ゼクセル Vehicle air-conditioning apparatus
US4598764A (en) 1984-10-09 1986-07-08 Honeywell Inc. Refrigeration heat pump and auxiliary heating apparatus control system with switchover during low outdoor temperature
US4703325A (en) 1984-10-22 1987-10-27 Carrier Corp. Remote subsystem
JPS61105066A (en) 1984-10-26 1986-05-23 Nissan Motor Expansion valve
JPH0150824B2 (en) 1984-12-07 1989-10-31 Trinity Ind Corp
US4563878A (en) 1984-12-13 1986-01-14 Baglione Richard A Super-heat monitoring and control device for air conditioning refrigeration systems
US4621502A (en) 1985-01-11 1986-11-11 Tyler Refrigeration Corporation Electronic temperature control for refrigeration system
JPH0686960B2 (en) 1985-01-30 1994-11-02 株式会社日立製作所 Refrigerant flow control device
US4627245A (en) 1985-02-08 1986-12-09 Honeywell Inc. De-icing thermostat for air conditioners
USRE34001E (en) 1985-02-14 1992-07-21 Papst-Motoren Gmbh & Co. Kg Enamelled wire connection for circuit boards
JPS61197967A (en) 1985-02-26 1986-09-02 Diesel Kiki Co Cooling cycle
US4614089A (en) 1985-03-19 1986-09-30 General Services Engineering, Inc. Controlled refrigeration system
US4577977A (en) 1985-04-01 1986-03-25 Honeywell Inc. Energy submetering system
JPS61167498U (en) 1985-04-05 1986-10-17
US4682473A (en) 1985-04-12 1987-07-28 Rogers Iii Charles F Electronic control and method for increasing efficiency of heating and cooling systems
FR2582430B1 (en) 1985-05-23 1987-10-23 Euram Umpi Ltd Method for transmission of signals intended, in particular to the monitoring of specific equipment, such as for example alarm equipment installed in apartments, and system for carrying out this method
US4916633A (en) 1985-08-16 1990-04-10 Wang Laboratories, Inc. Expert system apparatus and methods
US4660386A (en) 1985-09-18 1987-04-28 Hansen John C Diagnostic system for detecting faulty sensors in liquid chiller air conditioning system
US4653280A (en) 1985-09-18 1987-03-31 Hansen John C Diagnostic system for detecting faulty sensors in a refrigeration system
US4722019A (en) 1985-09-20 1988-01-26 General Electric Company Protection methods and systems for refrigeration systems suitable for a variety of different models
US4724678A (en) 1985-09-20 1988-02-16 General Electric Company Self-calibrating control methods and systems for refrigeration systems
JPH07111288B2 (en) 1985-09-20 1995-11-29 株式会社日立製作所 Air conditioner
FR2589561B1 (en) 1985-11-05 1988-06-10 Froilabo Method for protection of a refrigeration system against the deposits of additives in the heat transfer fluid circuit, and Central implementing such a process a
JPS62116844A (en) 1985-11-13 1987-05-28 Matsushita Seiko Co Ltd Central monitor and control system for air-conditioning machine
US4689967A (en) 1985-11-21 1987-09-01 American Standard Inc. Control and method for modulating the capacity of a temperature conditioning system
US4715190A (en) 1985-11-21 1987-12-29 American Standard Inc. Control and method for modulating the capacity of a temperature conditioning system
JPH0361098B2 (en) 1985-11-29 1991-09-18 Tokyo Shibaura Electric Co
US4964060A (en) 1985-12-04 1990-10-16 Hartsog Charles H Computer aided building plan review system and process
US4722018A (en) 1985-12-09 1988-01-26 General Electric Company Blocked condenser airflow protection for refrigeration systems
EP0250488A1 (en) 1985-12-24 1988-01-07 Monitronix Limited Electronic sequential fault finding system
US4662184A (en) 1986-01-06 1987-05-05 General Electric Company Single-sensor head pump defrost control system
DE3601817A1 (en) 1986-01-22 1987-07-23 Egelhof Fa Otto Control device for the kaeltemittelzustrom to the evaporator of kaelteanlagen or heat pump and is arranged in the expansion valves kaeltemittelstrom
US4754410A (en) 1986-02-06 1988-06-28 Westinghouse Electric Corp. Automated rule based process control method with feedback and apparatus therefor
US4750332A (en) 1986-03-05 1988-06-14 Eaton Corporation Refrigeration control system with self-adjusting defrost interval
US4783752A (en) 1986-03-06 1988-11-08 Teknowledge, Inc. Knowledge based processor for application programs using conventional data processing capabilities
KR900003052B1 (en) 1986-03-14 1990-05-04 미다 가쓰시게 Refrigerant flow control system for use with refrigerator
US4987748A (en) 1986-03-19 1991-01-29 Camp Dresser & Mckee Air conditioning apparatus
US4755957A (en) 1986-03-27 1988-07-05 K-White Tools, Incorporated Automotive air-conditioning servicing system and method
US5515267A (en) 1986-04-04 1996-05-07 Alsenz; Richard H. Apparatus and method for refrigeration system control and display
US4939909A (en) 1986-04-09 1990-07-10 Sanyo Electric Co., Ltd. Control apparatus for air conditioner
US5200987A (en) 1986-04-21 1993-04-06 Gray William F Remote supervisory monitoring and control apparatus connected to monitored equipment
GB8611360D0 (en) 1986-05-09 1986-06-18 Eaton Williams Raymond H Air condition monitor unit
JPS62186537U (en) 1986-05-16 1987-11-27
US4684060A (en) 1986-05-23 1987-08-04 Honeywell Inc. Furnace fan control
JPH0817539B2 (en) 1986-07-16 1996-02-21 株式会社東芝 Load group control device such as an electric motor
DE3624170A1 (en) 1986-07-17 1988-01-21 Bosch Gmbh Robert A method of operating a heating and / or air conditioning system for motor vehicles
US4887857A (en) 1986-07-22 1989-12-19 Air Products And Chemicals, Inc. Method and system for filling cryogenic liquid containers
US4829777A (en) 1986-07-23 1989-05-16 Nippondenso Co., Ltd. Refrigeration system
US4712648A (en) 1986-08-18 1987-12-15 Ssi Technologies, Inc. Dual magnetic coil driver and monitor sensor circuit
US5102316A (en) 1986-08-22 1992-04-07 Copeland Corporation Non-orbiting scroll mounting arrangements for a scroll machine
US4877382A (en) 1986-08-22 1989-10-31 Copeland Corporation Scroll-type machine with axially compliant mounting
US4698978A (en) 1986-08-26 1987-10-13 Uhr Corporation Welded contact safety technique
JPH0768942B2 (en) 1986-09-01 1995-07-26 生方 眞之介 Protection device sealed electric compressor
US4933668A (en) 1986-09-29 1990-06-12 Shepherd Intelligence Systems, Inc. Aircraft security system
US4796142A (en) 1986-10-16 1989-01-03 Square D Company Overload protection apparatus for emulating the response of a thermal overload
JPH0754207B2 (en) 1986-11-25 1995-06-07 日本電装株式会社 Refrigeration cycle system
US4751825A (en) 1986-12-04 1988-06-21 Carrier Corporation Defrost control for variable speed heat pumps
JPS63161334A (en) 1986-12-24 1988-07-05 Toshiba Corp Operating device for ventilation fan
JPH0541904B2 (en) 1986-12-26 1993-06-24 Fuji Koki Mfg
US4848100A (en) 1987-01-27 1989-07-18 Eaton Corporation Controlling refrigeration
US4805118A (en) 1987-02-04 1989-02-14 Systecon, Inc. Monitor and control for a multi-pump system
US4945491A (en) 1987-02-04 1990-07-31 Systecon, Inc. Monitor and control for a multi-pump system
US4765150A (en) 1987-02-09 1988-08-23 Margaux Controls, Inc. Continuously variable capacity refrigeration system
USRE33620E (en) 1987-02-09 1991-06-25 Margaux, Inc. Continuously variable capacity refrigeration system
US4796466A (en) 1987-02-17 1989-01-10 Ed Farmer System for monitoring pipelines
US4885707A (en) 1987-02-19 1989-12-05 Dli Corporation Vibration data collecting and processing apparatus and method
GB8704269D0 (en) 1987-02-24 1987-04-01 Rue Systems De Monitoring system
DE3706152A1 (en) 1987-02-26 1988-09-08 Sueddeutsche Kuehler Behr Method for controlling an automotive air conditioning system and automobile air conditioning system for performing the method
US4720980A (en) 1987-03-04 1988-01-26 Thermo King Corporation Method of operating a transport refrigeration system
US4893480A (en) 1987-03-13 1990-01-16 Nippondenso Co., Ltd. Refrigeration cycle control apparatus
US4745766A (en) 1987-03-27 1988-05-24 Kohler Co. Dehumidifier control system
DE3713869C2 (en) 1987-04-25 1989-02-02 Danfoss A/S, Nordborg, Dk
US4745765A (en) 1987-05-11 1988-05-24 General Motors Corporation Low refrigerant charge detecting device
US4903503A (en) 1987-05-12 1990-02-27 Camp Dresser & Mckee Air conditioning apparatus
US4750672A (en) 1987-05-15 1988-06-14 Honeywell Inc. Minimizing off cycle losses of a refrigeration system in a heating mode
JPS63286642A (en) 1987-05-19 1988-11-24 Toshiba Corp Air-conditioning machine
JPS63302238A (en) 1987-05-29 1988-12-09 Nec Corp Apparatus to diagnose trouble in air conditioner
US4948040A (en) 1987-06-11 1990-08-14 Mitsubishi Denki Kabushiki Kaisha Air conditioning system
JPS6414554A (en) 1987-07-07 1989-01-18 Hitachi Ltd Operation control apparatus and method for refrigerating apparatus
US4831833A (en) 1987-07-13 1989-05-23 Parker Hannifin Corporation Frost detection system for refrigeration apparatus
US4882908A (en) 1987-07-17 1989-11-28 Ranco Incorporated Demand defrost control method and apparatus
US4735054A (en) 1987-08-13 1988-04-05 Honeywell Inc. Method for minimizing off cycle losses of a refrigeration system during a cooling mode of operation and an apparatus using the method
US4790142A (en) 1987-08-19 1988-12-13 Honeywell Inc. Method for minimizing cycling losses of a refrigeration system and an apparatus using the method
US4850204A (en) 1987-08-26 1989-07-25 Paragon Electric Company, Inc. Adaptive defrost system with ambient condition change detector
US4768346A (en) 1987-08-26 1988-09-06 Honeywell Inc. Determining the coefficient of performance of a refrigeration system
US5073862A (en) 1987-08-26 1991-12-17 Carlson Peter J Method and apparatus for diagnosing problems with the thermodynamic performance of a heat engine
US4881184A (en) 1987-09-08 1989-11-14 Datac, Inc. Turbine monitoring apparatus
US4903759A (en) 1987-09-25 1990-02-27 Lapeyrouse John G Apparatus and method for monitoring and controlling heating and/or cooling systems
US4885914A (en) 1987-10-05 1989-12-12 Honeywell Inc. Coefficient of performance deviation meter for vapor compression type refrigeration systems
US4866635A (en) 1987-10-19 1989-09-12 Carnegie Group Inc. Domain independent shell for building a diagnostic expert system
US4918690A (en) 1987-11-10 1990-04-17 Echelon Systems Corp. Network and intelligent cell for providing sensing, bidirectional communications and control
US4841734A (en) 1987-11-12 1989-06-27 Eaton Corporation Indicating refrigerant liquid saturation point
JPH0571850B2 (en) 1987-11-18 1993-10-08 Mitsubishi Electric Corp
DE3739372A1 (en) 1987-11-20 1989-06-01 Sueddeutsche Kuehler Behr air conditioner
US4856286A (en) 1987-12-02 1989-08-15 American Standard Inc. Refrigeration compressor driven by a DC motor
US4967567A (en) 1987-12-10 1990-11-06 Murray Corporation System and method for diagnosing the operation of air conditioner systems
US4820130A (en) 1987-12-14 1989-04-11 American Standard Inc. Temperature sensitive solenoid valve in a scroll compressor
US4829779A (en) 1987-12-15 1989-05-16 Hussmann Corporation Interface adapter for interfacing a remote controller with commercial refrigeration and environmental control systems
US4913625A (en) 1987-12-18 1990-04-03 Westinghouse Electric Corp. Automatic pump protection system
JPH01193562A (en) 1988-01-29 1989-08-03 Toshiba Corp Air conditioner
US4924418A (en) 1988-02-10 1990-05-08 Dickey-John Corporation Universal monitor
JPH01208646A (en) 1988-02-15 1989-08-22 Sanden Corp Controller of cooling, heating and hot-water supply system
FR2628558A1 (en) 1988-03-14 1989-09-15 Scl Security Computer Line Srl Self-contained security monitoring and alarm system - is used in home, vehicles, office contains microprocessor and sensors which monitor for almost every eventuality
US4924404A (en) 1988-04-11 1990-05-08 K. Reinke, Jr. & Company Energy monitor
JP2547069B2 (en) 1988-04-20 1996-10-23 富士通株式会社 Fault diagnosis system
US4882747A (en) 1988-05-12 1989-11-21 Jerry Williams Infrared communication apparatus for remote site applications
US4873836A (en) 1988-06-06 1989-10-17 Eaton Corporation Flow noise suppression for electronic valves
GB8813811D0 (en) 1988-06-10 1988-07-13 Cairney J Smoke detector
FR2634332B1 (en) 1988-07-13 1993-02-12 Salmson Pompes Electrical Team a modular junction means Engine
DE68926638T2 (en) 1988-07-20 1996-11-14 Mitsubishi Heavy Ind Ltd Fault diagnosis system for plants
US5070468A (en) 1988-07-20 1991-12-03 Mitsubishi Jukogyo Kabushiki Kaisha Plant fault diagnosis system
US5140394A (en) 1988-07-26 1992-08-18 Texas Instruments Incorporated Electrothermal sensor apparatus
US4964125A (en) 1988-08-19 1990-10-16 Hughes Aircraft Company Method and apparatus for diagnosing faults
DE3828207A1 (en) 1988-08-19 1990-02-22 Oplaender Wilo Werk Gmbh diagnostic connector
US4838037A (en) 1988-08-24 1989-06-13 American Standard Inc. Solenoid valve with supply voltage variation compensation
US4848099A (en) 1988-09-14 1989-07-18 Honeywell Inc. Adaptive refrigerant control algorithm
US4884412A (en) 1988-09-15 1989-12-05 William Sellers Compressor slugging protection device and method therefor
DE3832226C2 (en) 1988-09-22 1991-10-17 Danfoss A/S, Nordborg, Dk
JPH0749796B2 (en) 1988-09-26 1995-05-31 三菱電機株式会社 Protector of sealed electric compressor
US5018357A (en) 1988-10-11 1991-05-28 Helix Technology Corporation Temperature control system for a cryogenic refrigeration
US4916912A (en) 1988-10-12 1990-04-17 Honeywell, Inc. Heat pump with adaptive frost determination function
US4910966A (en) 1988-10-12 1990-03-27 Honeywell, Inc. Heat pump with single exterior temperature sensor
US4928750A (en) 1988-10-14 1990-05-29 American Standard Inc. VaV valve with PWM hot water coil
JPH02110242A (en) 1988-10-18 1990-04-23 Mitsubishi Heavy Ind Ltd Remote control failure diagnosis device for airconditioner
US5067099A (en) 1988-11-03 1991-11-19 Allied-Signal Inc. Methods and apparatus for monitoring system performance
US5005365A (en) 1988-12-02 1991-04-09 Inter-City Products Corporation (Usa) Thermostat speed bar graph for variable speed temperature control system
US4916909A (en) 1988-12-29 1990-04-17 Electric Power Research Institute Cool storage supervisory controller
GB8900251D0 (en) 1989-01-06 1989-03-08 Jackson Peter K Air conditioning system and operating method
FI88432C (en) 1989-01-13 1993-05-10 Halton Oy Foerfarande Foer regulating Science uppraetthaollande of luftstroemmar and the corresponding i ventilationsanlaeggningar Science that ventilationssystem i enlighet with foerfarandet
US4850198A (en) 1989-01-17 1989-07-25 American Standard Inc. Time based cooling below set point temperature
US5086385A (en) 1989-01-31 1992-02-04 Custom Command Systems Expandable home automation system
US5167494A (en) 1989-01-31 1992-12-01 Nippon Soken Inc. Scroll type compressor with axially supported movable scroll
US5201862A (en) 1989-02-13 1993-04-13 General Motors Corporation Low refrigerant charge protection method
US4889280A (en) 1989-02-24 1989-12-26 Gas Research Institute Temperature and humidity auctioneering control
US4878355A (en) 1989-02-27 1989-11-07 Honeywell Inc. Method and apparatus for improving cooling of a compressor element in an air conditioning system
US5109222A (en) 1989-03-27 1992-04-28 John Welty Remote control system for control of electrically operable equipment in people occupiable structures
US4990057A (en) 1989-05-03 1991-02-05 Johnson Service Company Electronic control for monitoring status of a compressor
JPH0765574B2 (en) 1989-05-09 1995-07-19 ダイキン工業株式会社 Refrigeration apparatus using the scroll type compressor
US4975024A (en) 1989-05-15 1990-12-04 Elliott Turbomachinery Co., Inc. Compressor control system to improve turndown and reduce incidents of surging
US5119466A (en) 1989-05-24 1992-06-02 Asmo Co., Ltd. Control motor integrated with a direct current motor and a speed control circuit
US4918932A (en) 1989-05-24 1990-04-24 Thermo King Corporation Method of controlling the capacity of a transport refrigeration system
US20020017057A1 (en) 1992-06-29 2002-02-14 Weder Donald E. Method of applying a decorative skirt to a flower pot
DE3918531A1 (en) 1989-06-07 1990-12-13 Taprogge Gmbh Method and apparatus capacitor for monitoring the efficiency of a
US4903500A (en) 1989-06-12 1990-02-27 Thermo King Corporation Methods and apparatus for detecting the need to defrost an evaporator coil
JPH0343693A (en) 1989-07-06 1991-02-25 Toshiba Corp Heat pump type heating
US4974665A (en) 1989-07-10 1990-12-04 Zillner Jr Anthony H Humidity control system
DE3925090A1 (en) 1989-07-28 1991-02-07 Bbc York Kaelte Klima Method for operating a kaelteanlage
US5243827A (en) 1989-07-31 1993-09-14 Hitachi, Ltd. Overheat preventing method for prescribed displacement type compressor and apparatus for the same
DE3928430C1 (en) 1989-08-28 1991-03-07 Linde Ag, 6200 Wiesbaden, De
US5058388A (en) 1989-08-30 1991-10-22 Allan Shaw Method and means of air conditioning
US5073091A (en) 1989-09-25 1991-12-17 Vickers, Incorporated Power transmission
JP2755469B2 (en) 1989-09-27 1998-05-20 株式会社日立製作所 Air conditioner
US5123017A (en) 1989-09-29 1992-06-16 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Remote maintenance monitoring system
US4949550A (en) 1989-10-04 1990-08-21 Thermo King Corporation Method and apparatus for monitoring a transport refrigeration system and its conditioned load
JPH03129267A (en) 1989-10-10 1991-06-03 Aisin Seiki Co Ltd Air conditioner
US5012629A (en) 1989-10-11 1991-05-07 Kraft General Foods, Inc. Method for producing infusion coffee filter packs
US4974427A (en) 1989-10-17 1990-12-04 Copeland Corporation Compressor system with demand cooling
US5056036A (en) 1989-10-20 1991-10-08 Pulsafeeder, Inc. Computer controlled metering pump
US5051720A (en) 1989-11-13 1991-09-24 Secure Telecom, Inc. Remote control system using power line of remote site
JP2824297B2 (en) 1989-12-01 1998-11-11 株式会社日立製作所 Air conditioner sensor abnormality when the operating mode
US5200872A (en) 1989-12-08 1993-04-06 Texas Instruments Incorporated Internal protection circuit for electrically driven device
US5289362A (en) 1989-12-15 1994-02-22 Johnson Service Company Energy control system
US5076494A (en) 1989-12-18 1991-12-31 Carrier Corporation Integrated hot water supply and space heating system
US4977751A (en) 1989-12-28 1990-12-18 Thermo King Corporation Refrigeration system having a modulation valve which also performs function of compressor throttling valve
US5233841A (en) 1990-01-10 1993-08-10 Kuba Kaltetechnik Gmbh Method of optimising the performance of refrigerant vaporizers including improved frost control method and apparatus
US4944160A (en) 1990-01-31 1990-07-31 Eaton Corporation Thermostatic expansion valve with electronic controller
JPH0625984B2 (en) 1990-02-20 1994-04-06 インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン Multi-professional-broken system
JPH03244983A (en) 1990-02-23 1991-10-31 Toshiba Corp Air conditioner
US5009076A (en) 1990-03-08 1991-04-23 Temperature Engineering Corp. Refrigerant loss monitor
US4991770A (en) 1990-03-27 1991-02-12 Honeywell Inc. Thermostat with means for disabling PID control
JPH06103130B2 (en) 1990-03-30 1994-12-14 株式会社東芝 Air conditioner
JPH03282150A (en) 1990-03-30 1991-12-12 Toshiba Corp Air conditioner and its controlling system
DE4010770C1 (en) 1990-04-04 1991-11-21 Danfoss A/S, Nordborg, Dk
GB9008788D0 (en) 1990-04-19 1990-06-13 Whitbread & Co Plc Diagnostic equipment
US5000009A (en) 1990-04-23 1991-03-19 American Standard Inc. Method for controlling an electronic expansion valve in refrigeration system
US5022234A (en) 1990-06-04 1991-06-11 General Motors Corporation Control method for a variable displacement air conditioning system compressor
US5056329A (en) 1990-06-25 1991-10-15 Battelle Memorial Institute Heat pump systems
US5109676A (en) 1990-07-10 1992-05-05 Sundstrand Corporation Vapor cycle system evaporator control
US5039009A (en) 1990-07-16 1991-08-13 American Standard Inc. Thermostat interface for a refrigeration system controller
US5276630A (en) 1990-07-23 1994-01-04 American Standard Inc. Self configuring controller
JPH0480578A (en) 1990-07-24 1992-03-13 Toshiba Corp Efficiency diagnosing device for heat source apparatus
US5076067A (en) 1990-07-31 1991-12-31 Copeland Corporation Compressor with liquid injection
US5009074A (en) 1990-08-02 1991-04-23 General Motors Corporation Low refrigerant charge protection method for a variable displacement compressor
US5065593A (en) 1990-09-18 1991-11-19 Electric Power Research Institute, Inc. Method for controlling indoor coil freeze-up of heat pumps and air conditioners
US5095715A (en) 1990-09-20 1992-03-17 Electric Power Research Institute, Inc. Electric power demand limit for variable speed heat pumps and integrated water heating heat pumps
US5094086A (en) 1990-09-25 1992-03-10 Norm Pacific Automation Corp. Instant cooling system with refrigerant storage
US5141407A (en) 1990-10-01 1992-08-25 Copeland Corporation Scroll machine with overheating protection
CA2046548C (en) 1990-10-01 2002-01-15 Gary J. Anderson Scroll machine with floating seal
US5156539A (en) 1990-10-01 1992-10-20 Copeland Corporation Scroll machine with floating seal
US5303112A (en) 1990-10-26 1994-04-12 S & C Electric Company Fault detection method and apparatus
US5109916A (en) 1990-10-31 1992-05-05 Carrier Corporation Air conditioning filter system
US5127232A (en) 1990-11-13 1992-07-07 Carrier Corporation Method and apparatus for recovering and purifying refrigerant
US5235526A (en) 1990-11-27 1993-08-10 Solomat Limited Multi-probed sonde including microprocessor
US5077983A (en) 1990-11-30 1992-01-07 Electric Power Research Institute, Inc. Method and apparatus for improving efficiency of a pulsed expansion valve heat pump
US5581229A (en) 1990-12-19 1996-12-03 Hunt Technologies, Inc. Communication system for a power distribution line
US5119637A (en) 1990-12-28 1992-06-09 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Ultra-high temperature stability Joule-Thomson cooler with capability to accommodate pressure variations
KR0129519B1 (en) 1991-01-26 1998-04-08 강진구 Defrosting control method of a refrigerator
KR960001986B1 (en) 1991-01-31 1996-02-08 강진구 Refrigerator
US5228307A (en) 1991-02-27 1993-07-20 Kobatecon Group, Inc. Multitemperature responsive coolant coil fan control and method
US5083438A (en) 1991-03-01 1992-01-28 Mcmullin Larry D Chiller monitoring system
US5262704A (en) 1991-03-05 1993-11-16 Tecumseh Products Company Protection circuit in inverter for refrigerators
US5136855A (en) 1991-03-05 1992-08-11 Ontario Hydro Heat pump having an accumulator with refrigerant level sensor
US5197666A (en) 1991-03-18 1993-03-30 Wedekind Gilbert L Method and apparatus for estimation of thermal parameter for climate control
US5115967A (en) 1991-03-18 1992-05-26 Wedekind Gilbert L Method and apparatus for adaptively optimizing climate control energy consumption in a building
US5257506A (en) 1991-03-22 1993-11-02 Carrier Corporation Defrost control
US5095712A (en) 1991-05-03 1992-03-17 Carrier Corporation Economizer control with variable capacity
JPH04339189A (en) 1991-05-15 1992-11-26 Sanden Corp Scroll type fluid device
US5118260A (en) 1991-05-15 1992-06-02 Carrier Corporation Scroll compressor protector
US5274571A (en) 1991-05-20 1993-12-28 The Fleming Group Energy storage scheduling system
KR960001985B1 (en) 1991-06-07 1996-02-08 강진구 Refrigerator
JPH055564A (en) 1991-06-28 1993-01-14 Toshiba Corp Air conditioner
US5123253A (en) 1991-07-11 1992-06-23 Thermo King Corporation Method of operating a transport refrigeration unit
US5123252A (en) 1991-07-11 1992-06-23 Thermo King Corporation Method of operating a transport refrigeration unit
US5150584A (en) 1991-09-26 1992-09-29 General Motors Corporation Method and apparatus for detecting low refrigerant charge
JPH05106922A (en) 1991-10-18 1993-04-27 Hitachi Ltd Control system for refrigerating equipment
US5226472A (en) 1991-11-15 1993-07-13 Lab-Line Instruments, Inc. Modulated temperature control for environmental chamber
US5170935A (en) 1991-11-27 1992-12-15 Massachusetts Institute Of Technology Adaptable control of HVAC systems
US5237830A (en) 1992-01-24 1993-08-24 Ranco Incorporated Of Delaware Defrost control method and apparatus
US5519301A (en) 1992-02-26 1996-05-21 Matsushita Electric Industrial Co., Ltd. Controlling/driving apparatus for an electrically-driven compressor in a car
US5478212A (en) 1992-03-04 1995-12-26 Nippondenso Co., Ltd. Swash plate type compressor
US5230223A (en) 1992-03-20 1993-07-27 Envirosystems Corporation Method and apparatus for efficiently controlling refrigeration and air conditioning systems
US5761083A (en) 1992-03-25 1998-06-02 Brown, Jr.; Robert J. Energy management and home automation system
US5388176A (en) 1992-04-06 1995-02-07 Briggs & Stratton Corp. DC motor speed control system
US5181389A (en) 1992-04-26 1993-01-26 Thermo King Corporation Methods and apparatus for monitoring the operation of a transport refrigeration system
US5467011A (en) 1992-05-06 1995-11-14 National Rural Electric Cooperative Assn. System for detection of the phase of an electrical signal on an alternating circuit power line
US5245833A (en) 1992-05-19 1993-09-21 Martin Marietta Energy Systems, Inc. Liquid over-feeding air conditioning system and method
CA2069273A1 (en) 1992-05-22 1993-11-23 Edward L. Ratcliffe Energy management systems
US5592058A (en) 1992-05-27 1997-01-07 General Electric Company Control system and methods for a multiparameter electronically commutated motor
US5219041A (en) 1992-06-02 1993-06-15 Johnson Service Corp. Differential pressure sensor for screw compressors
US5228304A (en) 1992-06-04 1993-07-20 Ryan David J Refrigerant loss detector and alarm
US5209076A (en) * 1992-06-05 1993-05-11 Izon, Inc. Control system for preventing compressor damage in a refrigeration system
US5509786A (en) 1992-07-01 1996-04-23 Ubukata Industries Co., Ltd. Thermal protector mounting structure for hermetic refrigeration compressors
US5186014A (en) 1992-07-13 1993-02-16 General Motors Corporation Low refrigerant charge detection system for a heat pump
US5329788A (en) 1992-07-13 1994-07-19 Copeland Corporation Scroll compressor with liquid injection
JPH0658273A (en) 1992-08-03 1994-03-01 Daikin Ind Ltd Horizontal scroll compressor
US5475986A (en) 1992-08-12 1995-12-19 Copeland Corporation Microprocessor-based control system for heat pump having distributed architecture
US5271556A (en) 1992-08-25 1993-12-21 American Standard Inc. Integrated furnace control
US5918200A (en) 1992-08-31 1999-06-29 Yamatake-Honeywell Co., Ltd. State estimating apparatus
JP2794142B2 (en) 1992-09-14 1998-09-03 株式会社山武 The information processing apparatus
US5251453A (en) 1992-09-18 1993-10-12 General Motors Corporation Low refrigerant charge detection especially for automotive air conditioning systems
US5734105A (en) 1992-10-13 1998-03-31 Nippondenso Co., Ltd. Dynamic quantity sensor
US5369958A (en) 1992-10-15 1994-12-06 Mitsubishi Denki Kabushiki Kaisha Air conditioner
US5243829A (en) 1992-10-21 1993-09-14 General Electric Company Low refrigerant charge detection using thermal expansion valve stroke measurement
US5450359A (en) 1992-11-02 1995-09-12 National Informatics Centre, Government Of India Analog video interactive (AVI) PC Add-On Card for controlling consumer grade VHS-VCR
US5512883A (en) 1992-11-03 1996-04-30 Lane, Jr.; William E. Method and device for monitoring the operation of a motor
US5347476A (en) 1992-11-25 1994-09-13 Mcbean Sr Ronald V Instrumentation system with multiple sensor modules
US5311562A (en) 1992-12-01 1994-05-10 Westinghouse Electric Corp. Plant maintenance with predictive diagnostics
JP3290481B2 (en) 1992-12-03 2002-06-10 東芝キヤリア株式会社 Refrigeration cycle control device
US5333460A (en) 1992-12-21 1994-08-02 Carrier Corporation Compact and serviceable packaging of a self-contained cryocooler system
US5743109A (en) 1993-12-15 1998-04-28 Schulak; Edward R. Energy efficient domestic refrigeration system
US5337576A (en) 1992-12-28 1994-08-16 Rite Charge Corporation Refrigerant and H.V.A.C. ducting leak detector
US5269458A (en) 1993-01-14 1993-12-14 David Sol Furnace monitoring and thermostat cycling system for recreational vehicles and marine vessels
US5368446A (en) 1993-01-22 1994-11-29 Copeland Corporation Scroll compressor having high temperature control
US5351037A (en) 1993-01-22 1994-09-27 J And N Associates, Inc. Refrigerant gas leak detector
EP0714567B1 (en) 1993-08-20 2001-08-01 Wöel Elektronik Hb Circuit for speed control for a one-phase or three-phase motor
CA2116168A1 (en) 1993-03-02 1994-09-03 Gregory Cmar Process for identifying patterns of electric energy consumption and demand in a facility, predicting and verifying the effects of proposed changes, and implementing such changes in the facility to conserve energy
US6922155B1 (en) 1993-04-06 2005-07-26 Travel Boards, Inc. Information display board
US5592824A (en) 1993-04-28 1997-01-14 Daikin Industries, Ltd. Driving control device for air conditioner
US5875638A (en) 1993-05-03 1999-03-02 Copeland Corporation Refrigerant recovery system
US5282728A (en) 1993-06-02 1994-02-01 General Motors Corporation Inertial balance system for a de-orbiting scroll in a scroll type fluid handling machine
US5467264A (en) 1993-06-30 1995-11-14 Microsoft Method and system for selectively interdependent control of devices
US5381669A (en) 1993-07-21 1995-01-17 Copeland Corporation Overcharge-undercharge diagnostic system for air conditioner controller
US5362206A (en) 1993-07-21 1994-11-08 Automation Associates Pump control responsive to voltage-current phase angle
US5754450A (en) 1993-09-06 1998-05-19 Diagnostics Temed Ltd. Detection of faults in the working of electric motor driven equipment
EP0644333B1 (en) 1993-09-20 1998-12-09 Ebara Corporation Pump system
US5435148A (en) 1993-09-28 1995-07-25 Jdm, Ltd. Apparatus for maximizing air conditioning and/or refrigeration system efficiency
US5432500A (en) 1993-10-25 1995-07-11 Scripps International, Ltd. Overhead detector and light assembly with remote control
CN1079528C (en) 1993-10-28 2002-02-20 株式会社日立制作所 Refrigerant circulating and controlling method
US5519337A (en) 1993-11-04 1996-05-21 Martin Marietta Energy Systems, Inc. Motor monitoring method and apparatus using high frequency current components
US5460006A (en) 1993-11-16 1995-10-24 Hoshizaki Denki Kabushiki Kaisha Monitoring system for food storage device
US5586446A (en) 1993-11-16 1996-12-24 Hoshizaki Denki Kabushiki Kaisha Monitoring system for ice making machine
US5452291A (en) 1993-11-30 1995-09-19 Panasonic Technologies, Inc. Combination brouter and cluster controller
US5469045A (en) 1993-12-07 1995-11-21 Dove; Donald C. High speed power factor controller
US5415005A (en) 1993-12-09 1995-05-16 Long Island Lighting Company Defrost control device and method
US5440890A (en) 1993-12-10 1995-08-15 Copeland Corporation Blocked fan detection system for heat pump
US5533347A (en) 1993-12-22 1996-07-09 Novar Electronics Corporation Method of refrigeration case control
US5460008A (en) 1993-12-22 1995-10-24 Novar Electronics Corporation Method of refrigeration case synchronization for compressor optimization
US5635896A (en) 1993-12-27 1997-06-03 Honeywell Inc. Locally powered control system having a remote sensing unit with a two wire connection
US5602761A (en) 1993-12-30 1997-02-11 Caterpillar Inc. Machine performance monitoring and fault classification using an exponentially weighted moving average scheme
US5440895A (en) 1994-01-24 1995-08-15 Copeland Corporation Heat pump motor optimization and sensor fault detection
US5440891A (en) 1994-01-26 1995-08-15 Hindmon, Jr.; James O. Fuzzy logic based controller for cooling and refrigerating systems
US5414792A (en) 1994-01-27 1995-05-09 Dax Industries, Inc. Electric throttle and motor control circuitry
US5395042A (en) 1994-02-17 1995-03-07 Smart Systems International Apparatus and method for automatic climate control
US5415008A (en) 1994-03-03 1995-05-16 General Electric Company Refrigerant flow rate control based on suction line temperature
US5431026A (en) 1994-03-03 1995-07-11 General Electric Company Refrigerant flow rate control based on liquid level in dual evaporator two-stage refrigeration cycles
US5435145A (en) 1994-03-03 1995-07-25 General Electric Company Refrigerant flow rate control based on liquid level in simple vapor compression refrigeration cycles
US5426952A (en) 1994-03-03 1995-06-27 General Electric Company Refrigerant flow rate control based on evaporator exit dryness
US5457965A (en) 1994-04-11 1995-10-17 Ford Motor Company Low refrigerant charge detection system
US6230501B1 (en) 1994-04-14 2001-05-15 Promxd Technology, Inc. Ergonomic systems and methods providing intelligent adaptive surfaces and temperature control
US5495722A (en) 1994-04-21 1996-03-05 Whirlpool Corporation Remote control for diagnostics of an air conditioner
EP0740256A3 (en) 1994-05-03 1996-11-06 Yamatake-Honeywell Co. Ltd. Building management set value decision support apparatus, set value learning apparatus, set value determining apparatus, and neural network operation apparatus
US5532534A (en) 1994-05-11 1996-07-02 Emerson Electric Co. Brushless permanent magnet condenser motor for refrigeration
US5714931A (en) 1994-05-16 1998-02-03 Petite; Thomas D. Personalized security system
US5926103A (en) 1994-05-16 1999-07-20 Petite; T. David Personalized security system
US5535136A (en) 1994-05-17 1996-07-09 Standifer; Larry R. Detection and quantification of fluid leaks
US5454229A (en) 1994-05-18 1995-10-03 Thermo King Corporation Refrigeration unit control with shutdown evaluation and automatic restart
US5684463A (en) 1994-05-23 1997-11-04 Diercks; Richard Lee Roi Electronic refrigeration and air conditioner monitor and alarm
JPH07332262A (en) 1994-06-03 1995-12-22 Toyota Autom Loom Works Ltd Scroll type compressor
US5564280A (en) 1994-06-06 1996-10-15 Schilling; Ronald W. Apparatus and method for refrigerant fluid leak prevention
US5839094A (en) 1995-06-30 1998-11-17 Ada Technologies, Inc. Portable data collection device with self identifying probe
JPH0821675A (en) 1994-07-06 1996-01-23 Hitachi Ltd Air conditioner and refrigerant quantity-determining method therefor
US5555195A (en) 1994-07-22 1996-09-10 Johnson Service Company Controller for use in an environment control network capable of storing diagnostic information
US5696501A (en) 1994-08-02 1997-12-09 General Electric Company Method and apparatus for performing the register functions for a plurality of metering devices at a common node
US5596507A (en) 1994-08-15 1997-01-21 Jones; Jeffrey K. Method and apparatus for predictive maintenance of HVACR systems
US5758331A (en) 1994-08-15 1998-05-26 Clear With Computers, Inc. Computer-assisted sales system for utilities
DE4430468C2 (en) 1994-08-27 1998-05-28 Danfoss As Control means of a cooling device
US5481884A (en) 1994-08-29 1996-01-09 General Motors Corporation Apparatus and method for providing low refrigerant charge detection
US5546757A (en) 1994-09-07 1996-08-20 General Electric Company Refrigeration system with electrically controlled expansion valve
JPH0887229A (en) 1994-09-16 1996-04-02 Toshiba Corp Fan abnormality detecting device
US5910161A (en) 1994-09-20 1999-06-08 Fujita; Makoto Refrigerating apparatus
US5586445A (en) 1994-09-30 1996-12-24 General Electric Company Low refrigerant charge detection using a combined pressure/temperature sensor
US5745114A (en) 1994-09-30 1998-04-28 Siemens Energy & Automation, Inc. Graphical display for an energy management device
US5546015A (en) 1994-10-20 1996-08-13 Okabe; Toyohiko Determining device and a method for determining a failure in a motor compressor system
US5577905A (en) 1994-11-16 1996-11-26 Robertshaw Controls Company Fuel control system, parts therefor and methods of making and operating the same
US5666815A (en) 1994-11-18 1997-09-16 Cooper Instrument Corporation Method and apparatus for calculating super heat in an air conditioning system
US6529590B1 (en) 1994-11-23 2003-03-04 Coltec Industries, Inc. Systems and methods for remotely controlling a machine
US5713724A (en) 1994-11-23 1998-02-03 Coltec Industries Inc. System and methods for controlling rotary screw compressors
US5615071A (en) 1994-12-02 1997-03-25 Ubukata Industries Co., Ltd. Thermal protector for hermetic electrically-driven compressors
US5729474A (en) 1994-12-09 1998-03-17 Excel Energy Technologies, Ltd. Method of anticipating potential HVAC failure
US5650936A (en) 1994-12-30 1997-07-22 Cd Power Measurement Limited Power monitor apparatus and method with object oriented structure
US6694270B2 (en) 1994-12-30 2004-02-17 Power Measurement Ltd. Phasor transducer apparatus and system for protection, control, and management of electricity distribution systems
US5706007A (en) 1995-01-03 1998-01-06 Smar Research Corporation Analog current / digital bus protocol converter circuit
US5602749A (en) 1995-01-12 1997-02-11 Mtc Method of data compression and apparatus for its use in monitoring machinery
US5564626A (en) 1995-01-27 1996-10-15 York International Corporation Control system for air quality and temperature conditioning unit with high capacity filter bypass
US5546756A (en) 1995-02-08 1996-08-20 Eaton Corporation Controlling an electrically actuated refrigerant expansion valve
JPH08219058A (en) 1995-02-09 1996-08-27 Matsushita Electric Ind Co Ltd Hermetic motor-driven compressor
JP3611257B2 (en) 1995-03-27 2005-01-19 三菱重工業株式会社 Heat pump air conditioner
US5628201A (en) 1995-04-03 1997-05-13 Copeland Corporation Heating and cooling system with variable capacity compressor
JPH08284842A (en) 1995-04-13 1996-10-29 Japan Steel Works Ltd:The Discharge capacity control method and device for displacement type reciprocating compressor
US5986571A (en) 1996-03-25 1999-11-16 Flick; Kenneth E. Building security system having remote transmitter code verification and code reset features
US5579648A (en) 1995-04-19 1996-12-03 Thermo King Corporation Method of monitoring a transport refrigeration unit and an associated conditioned load
US5546073A (en) 1995-04-21 1996-08-13 Carrier Corporation System for monitoring the operation of a compressor unit
US5623834A (en) 1995-05-03 1997-04-29 Copeland Corporation Diagnostics for a heating and cooling system
US5570258A (en) 1995-05-11 1996-10-29 Texas Instruments Incorporated Phase monitor and protection apparatus
US5655380A (en) 1995-06-06 1997-08-12 Engelhard/Icc Step function inverter system
US5741120A (en) 1995-06-07 1998-04-21 Copeland Corporation Capacity modulated scroll machine
US5754732A (en) 1995-06-07 1998-05-19 Kollmorgen Corporation Distributed power supply for high frequency PWM motor controller with IGBT switching transistors
US5613841A (en) 1995-06-07 1997-03-25 Copeland Corporation Capacity modulated scroll machine
EP0747598B1 (en) 1995-06-07 2005-09-14 Copeland Corporation Capacity modulated scroll machine
US5611674A (en) 1995-06-07 1997-03-18 Copeland Corporation Capacity modulated scroll machine
JP3655681B2 (en) 1995-06-23 2005-06-02 三菱電機株式会社 Coolant circulation system
US5656765A (en) 1995-06-28 1997-08-12 General Motors Corporation Air/fuel ratio control diagnostic
DK172128B1 (en) 1995-07-06 1997-11-17 Danfoss As Compressor with control electronics
US5724571A (en) 1995-07-07 1998-03-03 Sun Microsystems, Inc. Method and apparatus for generating query responses in a computer-based document retrieval system
US6153942A (en) 1995-07-17 2000-11-28 Lucas Aerospace Power Equipment Corp. Starter/generator speed sensing using field weakening
US5718822A (en) 1995-09-27 1998-02-17 The Metraflex Company Differential pressure apparatus for detecting accumulation of particulates in a filter
US5757892A (en) 1995-10-11 1998-05-26 Phonetics, Inc. Self-contained fax communications appliance
US6304934B1 (en) 1995-10-13 2001-10-16 Smar Research Corporation Computer to fieldbus control system interface
US5707210A (en) 1995-10-13 1998-01-13 Copeland Corporation Scroll machine with overheating protection
US5841654A (en) 1995-10-16 1998-11-24 Smar Research Corporation Windows based network configuration and control method for a digital control system
US5572643A (en) 1995-10-19 1996-11-05 Judson; David H. Web browser with dynamic display of information objects during linking
US5711785A (en) 1995-10-26 1998-01-27 Ormet Corporation Method and apparatus for controlling the cleaning cycle of air filter elements and for predicting the useful life thereof
US5600960A (en) 1995-11-28 1997-02-11 American Standard Inc. Near optimization of cooling tower condenser water
US5752385A (en) 1995-11-29 1998-05-19 Litton Systems, Inc. Electronic controller for linear cryogenic coolers
WO1997024591A1 (en) 1996-01-02 1997-07-10 Woodward Governor Company Surge prevention control system for dynamic compressors
US5643482A (en) 1996-01-16 1997-07-01 Heat Timer Corporation Snow melt control system
US5691692A (en) 1996-01-25 1997-11-25 Ingersoll-Rand Company Portable machine with machine diagnosis indicator circuit
CA2195609C (en) 1996-02-14 2004-11-02 Heat Timer Corporation Passive injection system used to establish a secondary system temperature from a primary system at different temperature
US5656767A (en) 1996-03-08 1997-08-12 Computational Systems, Inc. Automatic determination of moisture content and lubricant type
US6535270B1 (en) 1996-03-27 2003-03-18 Nikon Corporation Exposure apparatus and air-conditioning apparatus for use with exposure apparatus
US5772403A (en) 1996-03-27 1998-06-30 Butterworth Jetting Systems, Inc. Programmable pump monitoring and shutdown system
US5772214A (en) 1996-04-12 1998-06-30 Carrier Corporation Automatic shut down seal control
US5875430A (en) 1996-05-02 1999-02-23 Technology Licensing Corporation Smart commercial kitchen network
US7877291B2 (en) 1996-05-02 2011-01-25 Technology Licensing Corporation Diagnostic data interchange
US5805856A (en) 1996-05-03 1998-09-08 Jeffrey H. Hanson Supplemental heating system
JPH1030561A (en) 1996-05-08 1998-02-03 Lg Electron Inc Driving device for linear compressor
US6128583A (en) 1996-05-20 2000-10-03 Crane Nuclear, Inc. Motor stator condition analyzer
KR20000015873A (en) 1996-05-22 2000-03-15 로날드 지. 헬러 Method for detecting the occurrence of surge in a centrifugal compressor
US5827963A (en) 1996-05-31 1998-10-27 Smar Research Corporation System and method for determining a density of a fluid
US5757664A (en) 1996-06-04 1998-05-26 Warren Rogers Associates, Inc. Method and apparatus for monitoring operational performance of fluid storage systems
US5808441A (en) 1996-06-10 1998-09-15 Tecumseh Products Company Microprocessor based motor control system with phase difference detection
WO1997048161A1 (en) 1996-06-13 1997-12-18 Honeywell Inc. Real-time pricing control system and methods regarding same
US5764509A (en) 1996-06-19 1998-06-09 The University Of Chicago Industrial process surveillance system
US5715704A (en) 1996-07-08 1998-02-10 Ranco Incorporated Of Delaware Refrigeration system flow control expansion valve
US5873257A (en) 1996-08-01 1999-02-23 Smart Power Systems, Inc. System and method of preventing a surge condition in a vane-type compressor
US5839291A (en) 1996-08-14 1998-11-24 Multiplex Company, Inc. Beverage cooling and dispensing system with diagnostics
US5825597A (en) 1996-09-25 1998-10-20 General Electric Company System and method for detection and control of circulating currents in a motor
DE59610857D1 (en) 1996-09-28 2004-01-22 Maag Pump Systems Textron Ag Z Method and apparatus for monitoring system units
US20020016639A1 (en) 1996-10-01 2002-02-07 Intelihome, Inc., Texas Corporation Method and apparatus for improved building automation
US6192282B1 (en) 1996-10-01 2001-02-20 Intelihome, Inc. Method and apparatus for improved building automation
JPH10122711A (en) 1996-10-18 1998-05-15 Matsushita Electric Ind Co Ltd Refrigerating cycle control device
US6092992A (en) 1996-10-24 2000-07-25 Imblum; Gregory G. System and method for pump control and fault detection
US6017192A (en) 1996-10-28 2000-01-25 Clack; Richard N. System and method for controlling screw compressors
US5699670A (en) 1996-11-07 1997-12-23 Thermo King Corporation Control system for a cryogenic refrigeration system
FR2756085B1 (en) 1996-11-21 1998-12-31 Air Liquide food processing plant controlled according to set parameters
US8982856B2 (en) 1996-12-06 2015-03-17 Ipco, Llc Systems and methods for facilitating wireless network communication, satellite-based wireless network systems, and aircraft-based wireless network systems, and related methods
US7054271B2 (en) 1996-12-06 2006-05-30 Ipco, Llc Wireless network system and method for providing same
US6044062A (en) 1996-12-06 2000-03-28 Communique, Llc Wireless network system and method for providing same
US5869960A (en) 1996-12-19 1999-02-09 Brand; Ethan Digital power consumption meter for displaying instantaneous and consumed electric power of an electrical device
US6414594B1 (en) 1996-12-31 2002-07-02 Honeywell International Inc. Method and apparatus for user-initiated alarms in process control system
US5949677A (en) 1997-01-09 1999-09-07 Honeywell Inc. Control system utilizing fault detection
US5867998A (en) 1997-02-10 1999-02-09 Eil Instruments Inc. Controlling refrigeration
US5926531A (en) 1997-02-14 1999-07-20 Statsignal Systems, Inc. Transmitter for accessing pay-type telephones
US6628764B1 (en) 1997-02-14 2003-09-30 Statsignal Systems, Inc. System for requesting service of a vending machine
US6233327B1 (en) 1997-02-14 2001-05-15 Statsignal Systems, Inc. Multi-function general purpose transceiver
US7079810B2 (en) 1997-02-14 2006-07-18 Statsignal Ipc, Llc System and method for communicating with a remote communication unit via the public switched telephone network (PSTN)
US6618578B1 (en) 1997-02-14 2003-09-09 Statsignal Systems, Inc System and method for communicating with a remote communication unit via the public switched telephone network (PSTN)
US7137550B1 (en) 1997-02-14 2006-11-21 Statsignal Ipc, Llc Transmitter for accessing automated financial transaction machines
US5812061A (en) 1997-02-18 1998-09-22 Honeywell Inc. Sensor condition indicating system
US6152376A (en) 1997-02-21 2000-11-28 Heat-Timer Corporation Valve modulation method and system utilizing same
US5782101A (en) 1997-02-27 1998-07-21 Carrier Corporation Heat pump operating in the heating mode refrigerant pressure control
JPH10308150A (en) 1997-03-06 1998-11-17 Matsushita Electric Ind Co Ltd Motor protector
GB2323197B (en) 1997-03-13 1999-02-10 Intelligent Applic Ltd A monitoring system
US6013108A (en) 1997-03-18 2000-01-11 Endevco Corporation Intelligent sensor system with network bus
US5904049A (en) 1997-03-31 1999-05-18 General Electric Company Refrigeration expansion control
DE29723145U1 (en) 1997-04-10 1998-04-16 Harting Kgaa switchgear
JP3799732B2 (en) 1997-04-17 2006-07-19 株式会社デンソー Air conditioner
US6075530A (en) 1997-04-17 2000-06-13 Maya Design Group Computer system and method for analyzing information using one or more visualization frames
US5802860A (en) 1997-04-25 1998-09-08 Tyler Refrigeration Corporation Refrigeration system
US5810908A (en) 1997-05-02 1998-09-22 Bemis Manufacturing Company Electronic control for air filtering apparatus
US5975854A (en) 1997-05-09 1999-11-02 Copeland Corporation Compressor with protection module
US5995347A (en) 1997-05-09 1999-11-30 Texas Instruments Incorporated Method and apparatus for multi-function electronic motor protection
US5784232A (en) 1997-06-03 1998-07-21 Tecumseh Products Company Multiple winding sensing control and protection circuit for electric motors
US5860286A (en) 1997-06-06 1999-01-19 Carrier Corporation System monitoring refrigeration charge
US6070110A (en) 1997-06-23 2000-05-30 Carrier Corporation Humidity control thermostat and method for an air conditioning system
US8073921B2 (en) 1997-07-01 2011-12-06 Advanced Technology Company, LLC Methods for remote monitoring and control of appliances over a computer network
US6065946A (en) 1997-07-03 2000-05-23 Servo Magnetics, Inc. Integrated controller pump
GB2327134B (en) 1997-07-08 2002-04-03 Ibm Apparatus,method and computer program for providing arbitrary locking requesters for controlling concurrent access to server resources
US6006142A (en) 1997-07-14 1999-12-21 Seem; John E. Environmental control system and method
US6006171A (en) 1997-07-28 1999-12-21 Vines; Caroline J. Dynamic maintenance management system
US5950443A (en) 1997-08-08 1999-09-14 American Standard Inc. Compressor minimum capacity control
US6092993A (en) 1997-08-14 2000-07-25 Bristol Compressors, Inc. Adjustable crankpin throw structure having improved throw stabilizing means
US5964605A (en) 1997-08-27 1999-10-12 Motivepower Investments Limited Connector assembly with ejector
US5884494A (en) 1997-09-05 1999-03-23 American Standard Inc. Oil flow protection scheme
US6088659A (en) 1997-09-11 2000-07-11 Abb Power T&D Company Inc. Automated meter reading system
US6092370A (en) 1997-09-16 2000-07-25 Flow International Corporation Apparatus and method for diagnosing the status of specific components in high-pressure fluid pumps
US6437692B1 (en) 1998-06-22 2002-08-20 Statsignal Systems, Inc. System and method for monitoring and controlling remote devices
US6430268B1 (en) 1997-09-20 2002-08-06 Statsignal Systems, Inc. Systems for requesting service of a vending machine
US6914533B2 (en) 1998-06-22 2005-07-05 Statsignal Ipc Llc System and method for accessing residential monitoring devices
US8410931B2 (en) 1998-06-22 2013-04-02 Sipco, Llc Mobile inventory unit monitoring systems and methods
US6891838B1 (en) 1998-06-22 2005-05-10 Statsignal Ipc, Llc System and method for monitoring and controlling residential devices
US6914893B2 (en) 1998-06-22 2005-07-05 Statsignal Ipc, Llc System and method for monitoring and controlling remote devices
US6154488A (en) 1997-09-23 2000-11-28 Hunt Technologies, Inc. Low frequency bilateral communication over distributed power lines
US5924295A (en) 1997-10-07 1999-07-20 Samsung Electronics Co., Ltd. Method and apparatus for controlling initial operation of refrigerator
CN1290328A (en) 1997-10-28 2001-04-04 科尔特克工业公司 Compressor system and method and control for same
US5924486A (en) 1997-10-29 1999-07-20 Tecom, Inc. Environmental condition control and energy management system and method
US6144888A (en) 1997-11-10 2000-11-07 Maya Design Group Modular system and architecture for device control
US5861807A (en) 1997-11-12 1999-01-19 Se-Kure Controls, Inc. Security system
US6385510B1 (en) 1997-12-03 2002-05-07 Klaus D. Hoog HVAC remote monitoring system
US6020660A (en) 1997-12-10 2000-02-01 General Electric Company Dynamoelectric machine
US5930773A (en) 1997-12-17 1999-07-27 Avista Advantage, Inc. Computerized resource accounting methods and systems, computerized utility management methods and systems, multi-user utility management methods and systems, and energy-consumption-based tracking methods and systems
US7043459B2 (en) 1997-12-19 2006-05-09 Constellation Energy Group, Inc. Method and apparatus for metering electricity usage and electronically providing information associated therewith
US6334093B1 (en) 1997-12-24 2001-12-25 Edward S. More Method and apparatus for economical drift compensation in high resolution difference measurements and exemplary low cost, high resolution differential digital thermometer
US6260004B1 (en) 1997-12-31 2001-07-10 Innovation Management Group, Inc. Method and apparatus for diagnosing a pump system
US6020702A (en) 1998-01-12 2000-02-01 Tecumseh Products Company Single phase compressor thermostat with start relay and motor protection
DE69940161D1 (en) 1998-06-18 2009-02-05 Kline & Walker L L C equipment automatic device for monitoring to operate on distance and machine applicable worldwide
US6172476B1 (en) 1998-01-28 2001-01-09 Bristol Compressors, Inc. Two step power output motor and associated HVAC systems and methods
US5941305A (en) 1998-01-29 1999-08-24 Patton Enterprises, Inc. Real-time pump optimization system
KR100285833B1 (en) 1998-02-19 2001-01-08 윤종용 Air conditioner with metering function and method for controlling operation of air conditioner
US6082495A (en) 1998-02-25 2000-07-04 Copeland Corporation Scroll compressor bearing lubrication
US5900801A (en) 1998-02-27 1999-05-04 Food Safety Solutions Corp. Integral master system for monitoring food service requirements for compliance at a plurality of food service establishments
US5939974A (en) 1998-02-27 1999-08-17 Food Safety Solutions Corp. System for monitoring food service requirements for compliance at a food service establishment
DE69914242D1 (en) 1998-03-23 2004-02-26 Hitachi Ltd Control apparatus for a brushless motor and machine brushless motor
JPH11281125A (en) 1998-03-30 1999-10-15 Sanyo Electric Co Ltd Air conditioner
US6618709B1 (en) 1998-04-03 2003-09-09 Enerwise Global Technologies, Inc. Computer assisted and/or implemented process and architecture for web-based monitoring of energy related usage, and client accessibility therefor
US5984645A (en) 1998-04-08 1999-11-16 General Motors Corporation Compressor with combined pressure sensor and high pressure relief valve assembly
US6215405B1 (en) 1998-04-23 2001-04-10 Digital Security Controls Ltd. Programmable temperature sensor for security system
US6050098A (en) 1998-04-29 2000-04-18 American Standard Inc. Use of electronic expansion valve to maintain minimum oil flow
US6466971B1 (en) 1998-05-07 2002-10-15 Samsung Electronics Co., Ltd. Method and system for device to device command and control in a network
US6832120B1 (en) 1998-05-15 2004-12-14 Tridium, Inc. System and methods for object-oriented control of diverse electromechanical systems using a computer network
US6041605A (en) 1998-05-15 2000-03-28 Carrier Corporation Compressor protection
US6366889B1 (en) 1998-05-18 2002-04-02 Joseph A. Zaloom Optimizing operational efficiency and reducing costs of major energy system at large facilities
US6529839B1 (en) 1998-05-28 2003-03-04 Retx.Com, Inc. Energy coordination system
US6122603A (en) 1998-05-29 2000-09-19 Powerweb, Inc. Multi-utility energy control system with dashboard
GB9812465D0 (en) 1998-06-11 1998-08-05 Abb Seatec Ltd Pipeline monitoring systems
US6609070B1 (en) 1998-06-19 2003-08-19 Rodi Systems Corp Fluid treatment apparatus
WO2002013412A1 (en) 2000-08-09 2002-02-14 Statsignal Systems, Inc. Systems and methods for providing remote monitoring of electricity consumption for an electric meter
US20020031101A1 (en) 2000-11-01 2002-03-14 Petite Thomas D. System and methods for interconnecting remote devices in an automated monitoring system
US6747557B1 (en) 1999-03-18 2004-06-08 Statsignal Systems, Inc. System and method for signaling a weather alert condition to a residential environment
US7103511B2 (en) 1998-10-14 2006-09-05 Statsignal Ipc, Llc Wireless communication networks for providing remote monitoring of devices
US7263073B2 (en) 1999-03-18 2007-08-28 Statsignal Ipc, Llc Systems and methods for enabling a mobile user to notify an automated monitoring system of an emergency situation
US7650425B2 (en) 1999-03-18 2010-01-19 Sipco, Llc System and method for controlling communication between a host computer and communication devices associated with remote devices in an automated monitoring system
US20040183687A1 (en) 1999-03-18 2004-09-23 Petite Thomas D. System and method for signaling a weather alert condition to a residential environment
US6327541B1 (en) 1998-06-30 2001-12-04 Ameren Corporation Electronic energy management system
US6068447A (en) 1998-06-30 2000-05-30 Standard Pneumatic Products, Inc. Semi-automatic compressor controller and method of controlling a compressor
JP3656412B2 (en) 1998-07-03 2005-06-08 株式会社日立製作所 Vehicle power controller
US6110260A (en) 1998-07-14 2000-08-29 3M Innovative Properties Company Filter having a change indicator
US6026651A (en) 1998-07-21 2000-02-22 Heat Timer Corporation Remote controlled defrost sequencer
US6390779B1 (en) 1998-07-22 2002-05-21 Westinghouse Air Brake Technologies Corporation Intelligent air compressor operation
US6206652B1 (en) 1998-08-25 2001-03-27 Copeland Corporation Compressor capacity modulation
US6178362B1 (en) 1998-09-24 2001-01-23 Silicon Energy Corp. Energy management system and method
US6636893B1 (en) 1998-09-24 2003-10-21 Itron, Inc. Web bridged energy management system and method
CA2284234C (en) 1998-10-01 2003-09-16 Samsung Electronics Co., Ltd. Method and apparatus for predicting power consumption of refrigerator having defrosting heater
KR100273444B1 (en) 1998-10-09 2000-12-15 구자홍 Break-down protection circuit and its method of a linear compressor
US6174136B1 (en) 1998-10-13 2001-01-16 Liquid Metronics Incorporated Pump control and method of operating same
US6028522A (en) 1998-10-14 2000-02-22 Statsignal Systems, Inc. System for monitoring the light level around an ATM
US20020013679A1 (en) 1998-10-14 2002-01-31 Petite Thomas D. System and method for monitoring the light level in a lighted area
US6218953B1 (en) 1998-10-14 2001-04-17 Statsignal Systems, Inc. System and method for monitoring the light level around an ATM
US6098893A (en) 1998-10-22 2000-08-08 Honeywell Inc. Comfort control system incorporating weather forecast data and a method for operating such a system
US6177884B1 (en) 1998-11-12 2001-01-23 Hunt Technologies, Inc. Integrated power line metering and communication method and apparatus
US6023420A (en) 1998-11-17 2000-02-08 Creare, Inc. Three-phase inverter for small high speed motors
US6038871A (en) 1998-11-23 2000-03-21 General Motors Corporation Dual mode control of a variable displacement refrigerant compressor
DE69914446T2 (en) 1998-11-23 2004-07-01 Delphi Technologies, Inc., Troy A method of diagnosing an air conditioner
US6085530A (en) 1998-12-07 2000-07-11 Scroll Technologies Discharge temperature sensor for sealed compressor
US6119949A (en) 1999-01-06 2000-09-19 Honeywell Inc. Apparatus and method for providing a multiple option select function
US6147601A (en) 1999-01-09 2000-11-14 Heat - Timer Corp. Electronic message delivery system utilizable in the monitoring of remote equipment and method of same
US6160477A (en) 1999-01-09 2000-12-12 Heat-Timer Corp. Electronic message delivery system utilizable in the monitoring of remote equipment and method of same
WO2000072285A9 (en) 1999-05-24 2002-08-01 Heat Timer Corp Electronic message delivery system utilizable in the monitoring oe remote equipment and method of same
US20040095237A1 (en) 1999-01-09 2004-05-20 Chen Kimball C. Electronic message delivery system utilizable in the monitoring and control of remote equipment and method of same
US6211782B1 (en) 1999-01-09 2001-04-03 Heat-Timer Corporation Electronic message delivery system utilizable in the monitoring of remote equipment and method of same
US6717513B1 (en) 1999-01-09 2004-04-06 Heat-Timer Corporation Electronic message delivery system utilizable in the monitoring of remote equipment and method of same
US6085732A (en) 1999-01-25 2000-07-11 Cummins Engine Co Inc EGR fault diagnostic system
US6179213B1 (en) 1999-02-09 2001-01-30 Energy Rest, Inc. Universal accessory for timing and cycling heat, ventilation and air conditioning energy consumption and distribution systems
US6598056B1 (en) 1999-02-12 2003-07-22 Honeywell International Inc. Remotely accessible building information system
US6176686B1 (en) 1999-02-19 2001-01-23 Copeland Corporation Scroll machine with capacity modulation
US6234019B1 (en) 1999-02-19 2001-05-22 Smar Research Corporation System and method for determining a density of a fluid
US6583720B1 (en) 1999-02-22 2003-06-24 Early Warning Corporation Command console for home monitoring system
US6184601B1 (en) 1999-02-24 2001-02-06 Shop Vac Corporation Thermally responsive protection apparatus
US6523130B1 (en) 1999-03-11 2003-02-18 Microsoft Corporation Storage system having error detection and recovery
US6011368A (en) 1999-03-30 2000-01-04 Dana Corporation Sensorless detection of a locked rotor in a switched reluctance motor
CN1354847A (en) 1999-04-09 2002-06-19 亨利·B·史蒂恩三世 Remote data access and system control
US6129527A (en) 1999-04-16 2000-10-10 Litton Systems, Inc. Electrically operated linear motor with integrated flexure spring and circuit for use in reciprocating compressor
US6152375A (en) 1999-04-22 2000-11-28 Robison; Jerry L. Remote control thermostat system for controlling electric devices
DE19918930B4 (en) 1999-04-26 2006-04-27 Lg Electronics Inc. Power control apparatus for a linear compressor and just such a method
DE19920563A1 (en) 1999-05-05 2000-11-09 Mannesmann Rexroth Ag Compact hydraulic unit
US6901066B1 (en) 1999-05-13 2005-05-31 Honeywell International Inc. Wireless control network with scheduled time slots
US6490506B1 (en) 1999-05-21 2002-12-03 Hydro Resource Solutions Llc Method and apparatus for monitoring hydroelectric facility maintenance and environmental costs
JP2000350490A (en) 1999-06-02 2000-12-15 Matsushita Electric Ind Co Ltd Brushless motor control device
US6542062B1 (en) 1999-06-11 2003-04-01 Tecumseh Products Company Overload protector with control element
US6571280B1 (en) 1999-06-17 2003-05-27 International Business Machines Corporation Method and apparatus for client sided backup and redundancy
US6223543B1 (en) 1999-06-17 2001-05-01 Heat-Timer Corporation Effective temperature controller and method of effective temperature control
US20060097063A1 (en) 2000-07-07 2006-05-11 Zvi Zeevi Modular HVAC control system
US6125642A (en) 1999-07-13 2000-10-03 Sporlan Valve Company Oil level control system
US6785592B1 (en) 1999-07-16 2004-08-31 Perot Systems Corporation System and method for energy management
US6179214B1 (en) 1999-07-21 2001-01-30 Carrier Corporation Portable plug-in control module for use with the service modules of HVAC systems
US6223544B1 (en) 1999-08-05 2001-05-01 Johnson Controls Technology Co. Integrated control and fault detection of HVAC equipment
US6433791B2 (en) 1999-08-10 2002-08-13 Smar Research Corporation Displaceable display arrangement
US6228155B1 (en) 1999-08-24 2001-05-08 Kuo Cheng Tai Automatic detection and warning device of filtering net in air conditioner
US6190442B1 (en) 1999-08-31 2001-02-20 Tishken Products Co. Air filter gauge
JP3800900B2 (en) 1999-09-09 2006-07-26 三菱電機株式会社 Refrigerator, refrigerator-freezer method of operation
US6213731B1 (en) 1999-09-21 2001-04-10 Copeland Corporation Compressor pulse width modulation
JP3703346B2 (en) 1999-09-24 2005-10-05 三菱電機株式会社 Air conditioner
US6757665B1 (en) 1999-09-28 2004-06-29 Rockwell Automation Technologies, Inc. Detection of pump cavitation/blockage and seal failure via current signature analysis
KR100320132B1 (en) * 1999-10-07 2002-01-10 이응준 Remote maintenance and mending system for air conditioner
US6268664B1 (en) 1999-10-08 2001-07-31 Sun Microsystems, Inc. Fan control module for a system unit
US6721770B1 (en) 1999-10-25 2004-04-13 Honeywell Inc. Recursive state estimation by matrix factorization
US7330886B2 (en) 1999-10-27 2008-02-12 American Power Conversion Corporation Network appliance management
US6426697B1 (en) 1999-11-10 2002-07-30 Adt Services Ag Alarm system having improved communication
US7454439B1 (en) 1999-11-24 2008-11-18 At&T Corp. System and method for large-scale data visualization
JP3780784B2 (en) 1999-11-25 2006-05-31 株式会社豊田自動織機 Air conditioner and a variable displacement compressor control valve
US6630749B1 (en) 1999-11-29 2003-10-07 Autonetworks Technologies, Ltd. Automobile power source monitor
JP3554269B2 (en) 1999-11-30 2004-08-18 松下電器産業株式会社 Linear motor drive device, media, and information aggregate
US6535859B1 (en) 1999-12-03 2003-03-18 Ultrawatt Energy System, Inc System and method for monitoring lighting systems
US6408258B1 (en) 1999-12-20 2002-06-18 Pratt & Whitney Canada Corp. Engine monitoring display for maintenance management
US6604093B1 (en) 1999-12-27 2003-08-05 International Business Machines Corporation Situation awareness system
US6290043B1 (en) 1999-12-29 2001-09-18 Visteon Global Technologies, Inc. Soft start compressor clutch
US6684349B2 (en) 2000-01-18 2004-01-27 Honeywell International Inc. Reliability assessment and prediction system and method for implementing the same
DE10100826B4 (en) 2000-02-01 2005-11-10 Lg Electronics Inc. Internet fridge and operating method therefor
US6359410B1 (en) 2000-02-22 2002-03-19 Cei Co., Ltd. Apparatus and method for motor current protection through a motor controller
JP4221893B2 (en) 2000-02-28 2009-02-12 株式会社豊田自動織機 Capacity control device and the compressor module variable displacement compressor
US6293767B1 (en) 2000-02-28 2001-09-25 Copeland Corporation Scroll machine with asymmetrical bleed hole
US6302654B1 (en) * 2000-02-29 2001-10-16 Copeland Corporation Compressor with control and protection system
US6522974B2 (en) 2000-03-01 2003-02-18 Westerngeco, L.L.C. Method for vibrator sweep analysis and synthesis
JP4273613B2 (en) 2000-03-06 2009-06-03 株式会社デンソー Air conditioner
US6973794B2 (en) * 2000-03-14 2005-12-13 Hussmann Corporation Refrigeration system and method of operating the same
US6332327B1 (en) 2000-03-14 2001-12-25 Hussmann Corporation Distributed intelligence control for commercial refrigeration
US20040016253A1 (en) 2000-03-14 2004-01-29 Hussmann Corporation Refrigeration system and method of operating the same
US6647735B2 (en) 2000-03-14 2003-11-18 Hussmann Corporation Distributed intelligence control for commercial refrigeration
US6999996B2 (en) 2000-03-14 2006-02-14 Hussmann Corporation Communication network and method of communicating data on the same
US7047753B2 (en) 2000-03-14 2006-05-23 Hussmann Corporation Refrigeration system and method of operating the same
US7000422B2 (en) 2000-03-14 2006-02-21 Hussmann Corporation Refrigeration system and method of configuring the same
US6272868B1 (en) 2000-03-15 2001-08-14 Carrier Corporation Method and apparatus for indicating condenser coil performance on air-cooled chillers
US6406266B1 (en) 2000-03-16 2002-06-18 Scroll Technologies Motor protector on non-orbiting scroll
US6577959B1 (en) 2000-03-17 2003-06-10 Power Plus Corporation Fluid level measuring system for machines
US6391102B1 (en) 2000-03-21 2002-05-21 Stackhouse, Inc. Air filtration system with filter efficiency management
US6401976B1 (en) 2000-03-23 2002-06-11 Nordson Corporation Electrically operated viscous fluid dispensing apparatus and method
US7043339B2 (en) 2000-03-29 2006-05-09 Sanyo Electric Co., Ltd. Remote monitoring system for air conditioners
US7038681B2 (en) 2000-03-29 2006-05-02 Sourceprose Corporation System and method for georeferencing maps
US6360553B1 (en) 2000-03-31 2002-03-26 Computer Process Controls, Inc. Method and apparatus for refrigeration system control having electronic evaporator pressure regulators
JP3555549B2 (en) 2000-03-31 2004-08-18 ダイキン工業株式会社 High-pressure dome type compressor
US6560980B2 (en) 2000-04-10 2003-05-13 Thermo King Corporation Method and apparatus for controlling evaporator and condenser fans in a refrigeration system
US6406265B1 (en) 2000-04-21 2002-06-18 Scroll Technologies Compressor diagnostic and recording system
US6558126B1 (en) 2000-05-01 2003-05-06 Scroll Technologies Compressor utilizing low volt power tapped from high volt power
US6502409B1 (en) 2000-05-03 2003-01-07 Computer Process Controls, Inc. Wireless method and apparatus for monitoring and controlling food temperature
US6293114B1 (en) 2000-05-31 2001-09-25 Red Dot Corporation Refrigerant monitoring apparatus and method
US6829542B1 (en) 2000-05-31 2004-12-07 Warren Rupp, Inc. Pump and method for facilitating maintenance and adjusting operation of said pump
US20020082748A1 (en) 2000-06-15 2002-06-27 Internet Energy Systems, Inc. Utility monitoring and control systems
CN1165011C (en) 2000-06-19 2004-09-01 Lg电子株式会社 System and method for controlling refrigerator capable of executing communication
US6900738B2 (en) 2000-06-21 2005-05-31 Henry Crichlow Method and apparatus for reading a meter and providing customer service via the internet
US6484522B2 (en) 2000-06-23 2002-11-26 Kobe Steel, Ltd. Screw compressor for refrigerating apparatus
US6745107B1 (en) 2000-06-30 2004-06-01 Honeywell Inc. System and method for non-invasive diagnostic testing of control valves
US6983321B2 (en) 2000-07-10 2006-01-03 Bmc Software, Inc. System and method of enterprise systems and business impact management
US6266968B1 (en) 2000-07-14 2001-07-31 Robert Walter Redlich Multiple evaporator refrigerator with expansion valve
JP4523124B2 (en) 2000-07-14 2010-08-11 日立アプライアンス株式会社 Energy service business system
WO2002007495A8 (en) 2000-07-22 2002-02-21 Abb Research Ltd System for support of an error cause analysis
EP1307816A1 (en) 2000-08-09 2003-05-07 ABB Research Ltd. System for determining error causes
US7346463B2 (en) 2001-08-09 2008-03-18 Hunt Technologies, Llc System for controlling electrically-powered devices in an electrical network
FI20001825A (en) 2000-08-17 2002-02-18 A Lab Oy Avomaaviljeltyjen product products warehouse system and used in the storage box
EP1187021A3 (en) 2000-09-06 2004-01-02 Illinois Tool Works Inc. Method and system for allocating processing time between two processors
US7346472B1 (en) 2000-09-07 2008-03-18 Blue Spike, Inc. Method and device for monitoring and analyzing signals
JP3622657B2 (en) 2000-09-18 2005-02-23 株式会社日立製作所 Air-conditioning control system
US6578373B1 (en) 2000-09-21 2003-06-17 William J. Barbier Rate of change detector for refrigerant floodback
US6816817B1 (en) 2000-09-28 2004-11-09 Rockwell Automation Technologies, Inc. Networked control system with real time monitoring
US6577962B1 (en) 2000-09-28 2003-06-10 Silicon Energy, Inc. System and method for forecasting energy usage load
US20020040280A1 (en) 2000-09-29 2002-04-04 Morgan Stephen A. System and method for refrigerant-based air conditioning system diagnostics
US7092794B1 (en) 2000-10-05 2006-08-15 Carrier Corporation Method and apparatus for connecting to HVAC device
US7437150B1 (en) 2000-10-06 2008-10-14 Carrier Corporation Method for wireless data exchange for control of structural appliances such as heating, ventilation, refrigeration, and air conditioning systems
US6412293B1 (en) 2000-10-11 2002-07-02 Copeland Corporation Scroll machine with continuous capacity modulation
US6501629B1 (en) 2000-10-26 2002-12-31 Tecumseh Products Company Hermetic refrigeration compressor motor protector
US6897772B1 (en) 2000-11-14 2005-05-24 Honeywell International, Inc. Multi-function control system
US6711470B1 (en) 2000-11-16 2004-03-23 Bechtel Bwxt Idaho, Llc Method, system and apparatus for monitoring and adjusting the quality of indoor air
US6451210B1 (en) 2000-11-20 2002-09-17 General Electric Company Method and system to remotely monitor a carbon adsorption process
US6442953B1 (en) 2000-11-27 2002-09-03 Uview Ultraviolet Systems, Inc. Apparatus and method for diagnosing performance of air-conditioning systems
US6732538B2 (en) 2000-11-27 2004-05-11 Uview Ultraviolet Systems, Inc. Apparatus and method for diagnosing performance of air-conditioning systems
US6537034B2 (en) 2000-11-29 2003-03-25 Lg Electronics Inc. Apparatus and method for controlling operation of linear compressor
KR100382919B1 (en) 2000-11-29 2003-05-09 엘지전자 주식회사 Driving control apparatus for linear compressor
JP2002174172A (en) 2000-12-05 2002-06-21 Toyota Industries Corp Rotating machinery unit
US6968293B2 (en) 2000-12-07 2005-11-22 Juisclan Holding Gmbh Method and apparatus for optimizing equipment maintenance
DE10061545A1 (en) 2000-12-11 2002-06-13 Behr Gmbh & Co A process for the refrigerant charge monitoring
WO2002049178A8 (en) 2000-12-12 2003-09-04 Tecumseh Products Co Compressor terminal fault interruption
KR100381166B1 (en) 2000-12-13 2003-04-26 엘지전자 주식회사 Refrigerator Setup System and Method for the same
US6745085B2 (en) 2000-12-15 2004-06-01 Honeywell International Inc. Fault-tolerant multi-node stage sequencer and method for energy systems
US6497554B2 (en) 2000-12-20 2002-12-24 Carrier Corporation Fail safe electronic pressure switch for compressor motor
JP2002199773A (en) 2000-12-27 2002-07-12 Sanden Corp Drive control method for compressor motor and inverter for driving compressor
US6456928B1 (en) 2000-12-29 2002-09-24 Honeywell International Inc. Prognostics monitor for systems that are subject to failure
JP4018357B2 (en) 2001-01-16 2007-12-05 カルソニックカンセイ株式会社 Brushless motor
US20020095269A1 (en) 2001-01-17 2002-07-18 Francesco Natalini System for monitoring and servicing appliances
US20020103655A1 (en) 2001-01-30 2002-08-01 International Business Machines Corporation Method for a utility providing electricity via class of service
US7079775B2 (en) 2001-02-05 2006-07-18 Finisar Corporation Integrated memory mapped controller circuit for fiber optics transceiver
US6397612B1 (en) 2001-02-06 2002-06-04 Energy Control Equipment Energy saving device for walk-in refrigerators and freezers
US6784807B2 (en) 2001-02-09 2004-08-31 Statsignal Systems, Inc. System and method for accurate reading of rotating disk
US7002462B2 (en) 2001-02-20 2006-02-21 Gannett Fleming System and method for remote monitoring and maintenance management of vertical transportation equipment
US6609078B2 (en) 2001-02-21 2003-08-19 Emerson Retail Services, Inc. Food quality and safety monitoring system
US20020118106A1 (en) 2001-02-23 2002-08-29 Brenn Eric Walter Food safety discernment device
JP2002272167A (en) 2001-03-05 2002-09-20 Toyota Industries Corp Air conditioner and its drive method
JP4149178B2 (en) 2001-03-09 2008-09-10 松下電器産業株式会社 Remote maintenance system
US6560552B2 (en) 2001-03-20 2003-05-06 Johnson Controls Technology Company Dynamically configurable process for diagnosing faults in rotating machines
US20030074285A1 (en) 2001-03-23 2003-04-17 Restaurant Services, Inc. System, method and computer program product for translating sales data in a supply chain management framework
US6615594B2 (en) 2001-03-27 2003-09-09 Copeland Corporation Compressor diagnostic system
US6735549B2 (en) 2001-03-28 2004-05-11 Westinghouse Electric Co. Llc Predictive maintenance display system
US20020143482A1 (en) 2001-03-30 2002-10-03 Rajaiah Karanam Method and apparatus for monitoring electrical usage
US6574561B2 (en) 2001-03-30 2003-06-03 The University Of North Florida Emergency management system
JP3951711B2 (en) 2001-04-03 2007-08-01 株式会社デンソー Vapor compression refrigeration cycle
US6454538B1 (en) 2001-04-05 2002-09-24 Scroll Technologies Motor protector in pocket on non-orbiting scroll and routing of wires thereto
US6672846B2 (en) 2001-04-25 2004-01-06 Copeland Corporation Capacity modulation for plural compressors
US6457948B1 (en) 2001-04-25 2002-10-01 Copeland Corporation Diagnostic system for a compressor
US20020198629A1 (en) 2001-04-27 2002-12-26 Enerwise Global Technologies, Inc. Computerized utility cost estimation method and system
US6952732B2 (en) 2001-04-30 2005-10-04 Blue Pumpkin Software, Inc. Method and apparatus for multi-contact scheduling
WO2002089385A3 (en) 2001-04-30 2003-03-20 Emerson Retail Services Inc Building system performance analysis
US6668240B2 (en) 2001-05-03 2003-12-23 Emerson Retail Services Inc. Food quality and safety model for refrigerated food
US6892546B2 (en) 2001-05-03 2005-05-17 Emerson Retail Services, Inc. System for remote refrigeration monitoring and diagnostics
US6549135B2 (en) 2001-05-03 2003-04-15 Emerson Retail Services Inc. Food-quality and shelf-life predicting method and system
US6675591B2 (en) 2001-05-03 2004-01-13 Emerson Retail Services Inc. Method of managing a refrigeration system
US6701725B2 (en) 2001-05-11 2004-03-09 Field Diagnostic Services, Inc. Estimating operating parameters of vapor compression cycle equipment
US20060041335A9 (en) 2001-05-11 2006-02-23 Rossi Todd M Apparatus and method for servicing vapor compression cycle equipment
US6973410B2 (en) 2001-05-15 2005-12-06 Chillergy Systems, Llc Method and system for evaluating the efficiency of an air conditioning apparatus
US6658345B2 (en) 2001-05-18 2003-12-02 Cummins, Inc. Temperature compensation system for minimizing sensor offset variations
US6551069B2 (en) 2001-06-11 2003-04-22 Bristol Compressors, Inc. Compressor with a capacity modulation system utilizing a re-expansion chamber
US6663358B2 (en) 2001-06-11 2003-12-16 Bristol Compressors, Inc. Compressors for providing automatic capacity modulation and heat exchanging system including the same
US6708083B2 (en) 2001-06-20 2004-03-16 Frederick L. Orthlieb Low-power home heating or cooling system
US6816811B2 (en) 2001-06-21 2004-11-09 Johnson Controls Technology Company Method of intelligent data analysis to detect abnormal use of utilities in buildings
US6622097B2 (en) 2001-06-28 2003-09-16 Robert R. Hunter Method and apparatus for reading and controlling electric power consumption
US7039532B2 (en) 2001-06-28 2006-05-02 Hunter Robert R Method and apparatus for reading and controlling utility consumption
US6564563B2 (en) 2001-06-29 2003-05-20 International Business Machines Corporation Logic module refrigeration system with condensation control
JP4075338B2 (en) 2001-07-18 2008-04-16 株式会社豊田自動織機 Method of controlling the electric compressor
US6953630B2 (en) 2001-07-25 2005-10-11 Ballard Power Systems Inc. Fuel cell anomaly detection method and apparatus
US6685438B2 (en) 2001-08-01 2004-02-03 Lg Electronics Inc. Apparatus and method for controlling operation of reciprocating compressor
US6671586B2 (en) 2001-08-15 2003-12-30 Statsignal Systems, Inc. System and method for controlling power demand over an integrated wireless network
US20030036810A1 (en) 2001-08-15 2003-02-20 Petite Thomas D. System and method for controlling generation over an integrated wireless network
US7555364B2 (en) 2001-08-22 2009-06-30 MMI Controls, L.P. Adaptive hierarchy usage monitoring HVAC control system
US6741915B2 (en) 2001-08-22 2004-05-25 Mmi Controls, Ltd. Usage monitoring HVAC control system
US7707058B2 (en) 2001-08-31 2010-04-27 Hewlett-Packard Development Company, L.P. Predicting parts needed for an onsite repair using expected waste derived from repair history
US6993417B2 (en) 2001-09-10 2006-01-31 Osann Jr Robert System for energy sensing analysis and feedback
US20030055663A1 (en) 2001-09-20 2003-03-20 Christian Struble Method and system for shifting a cost associated with operating a device
US6463747B1 (en) 2001-09-25 2002-10-15 Lennox Manufacturing Inc. Method of determining acceptability of a selected condition in a space temperature conditioning system
FR2830291B1 (en) 2001-09-28 2004-04-16 Danfoss Maneurop S A Compressor spirals of varying ability
US6550260B1 (en) 2001-09-28 2003-04-22 Carrier Corporation Vibration detection in a transport refrigeration system through current sensing
US6622925B2 (en) 2001-10-05 2003-09-23 Enernet Corporation Apparatus and method for wireless control
US20030078742A1 (en) 2001-10-11 2003-04-24 Vanderzee Joel C. Determination and applications of three-phase power factor
US20030070544A1 (en) 2001-10-15 2003-04-17 Hamilton Beach/Proctor-Silex, Inc. System and method for determining filter condition
JP4186450B2 (en) 2001-10-16 2008-11-26 株式会社日立製作所 Air conditioning equipment operation system and air conditioning equipment design support system
US20030077179A1 (en) 2001-10-19 2003-04-24 Michael Collins Compressor protection module and system and method incorporating same
US8489063B2 (en) 2001-10-24 2013-07-16 Sipco, Llc Systems and methods for providing emergency messages to a mobile device
US7480501B2 (en) 2001-10-24 2009-01-20 Statsignal Ipc, Llc System and method for transmitting an emergency message over an integrated wireless network
US7424527B2 (en) 2001-10-30 2008-09-09 Sipco, Llc System and method for transmitting pollution information over an integrated wireless network
JP2003139822A (en) 2001-11-01 2003-05-14 Mitsubishi Electric Corp System and method for test using memory tester
JP3815302B2 (en) 2001-11-12 2006-08-30 株式会社デンソー Vehicle air-conditioning system
KR20030042857A (en) 2001-11-26 2003-06-02 백정복 Method of Testing Fault of DC Motor and Device thereof
US6595757B2 (en) 2001-11-27 2003-07-22 Kuei-Hsien Shen Air compressor control system
US6595475B2 (en) 2001-12-05 2003-07-22 Archer Wire International Corporation Dispenser platform
DE10162181A1 (en) 2001-12-18 2003-07-10 Bosch Gmbh Robert Method and circuit arrangement for protecting against overload of an electric motor
US7225193B2 (en) 2001-12-21 2007-05-29 Honeywell International Inc. Method and apparatus for retrieving event data related to an activity
US7552030B2 (en) 2002-01-22 2009-06-23 Honeywell International Inc. System and method for learning patterns of behavior and operating a monitoring and response system based thereon
US6667690B2 (en) 2002-01-22 2003-12-23 Carrier Corporation System and method for configuration of HVAC network
US6643567B2 (en) 2002-01-24 2003-11-04 Carrier Corporation Energy consumption estimation using real time pricing information
KR100521913B1 (en) 2002-02-09 2005-10-13 현대자동차주식회사 CONTROL METHOD OF Adjustable Electronic Thermostat
US6789739B2 (en) 2002-02-13 2004-09-14 Howard Rosen Thermostat system with location data
US6619555B2 (en) 2002-02-13 2003-09-16 Howard B. Rosen Thermostat system communicating with a remote correspondent for receiving and displaying diverse information
US7124728B2 (en) 2003-01-24 2006-10-24 Exxonmobil Research And Engineering Company Modification of lubricant properties in an operating all loss lubricating system
KR100471719B1 (en) 2002-02-28 2005-03-08 삼성전자주식회사 Controlling method of linear copressor
US20030216837A1 (en) 2002-03-08 2003-11-20 Daniel Reich Artificial environment control system
US20030171851A1 (en) 2002-03-08 2003-09-11 Peter J. Brickfield Automatic energy management and energy consumption reduction, especially in commercial and multi-building systems
US6996441B1 (en) 2002-03-11 2006-02-07 Advanced Micro Devices, Inc. Forward-looking fan control using system operation information
US20040019584A1 (en) 2002-03-18 2004-01-29 Greening Daniel Rex Community directory
US6868678B2 (en) 2002-03-26 2005-03-22 Ut-Battelle, Llc Non-intrusive refrigerant charge indicator
US6616415B1 (en) 2002-03-26 2003-09-09 Copeland Corporation Fuel gas compression system
CA2480551A1 (en) 2002-03-28 2003-10-09 Robertshaw Controls Company Energy management system and method
US20030183085A1 (en) 2002-04-01 2003-10-02 Ashton Alexander Air conditioner filter monitoring apparatus
US6571566B1 (en) 2002-04-02 2003-06-03 Lennox Manufacturing Inc. Method of determining refrigerant charge level in a space temperature conditioning system
US6868686B2 (en) 2002-04-04 2005-03-22 Matsushita Electric Industrial Co., Ltd. Refrigeration cycle apparatus
JP4058289B2 (en) 2002-04-09 2008-03-05 株式会社東芝 Life diagnosis and maintenance management method and apparatus of the plant equipment
US7383158B2 (en) 2002-04-16 2008-06-03 Trane International Inc. HVAC service tool with internet capability
US7079808B2 (en) 2002-04-18 2006-07-18 International Business Machines Corporation Light socket wireless repeater and controller
DE10217975B4 (en) 2002-04-22 2004-08-19 Danfoss A/S Method for detecting changes in a first medium flow of a heat or cold transfer medium in a refrigeration system
US7328192B1 (en) 2002-05-10 2008-02-05 Oracle International Corporation Asynchronous data mining system for database management system
US7124328B2 (en) 2002-05-14 2006-10-17 Sun Microsystems, Inc. Capturing system error messages
US6772598B1 (en) 2002-05-16 2004-08-10 R.S. Services, Inc. Refrigerant leak detection system
US20030213851A1 (en) 2002-05-20 2003-11-20 Burd Alexander L. Non-inertial thermostat and non-inertial thermostat/humidistat for building climate and energy consumption control
US7711855B2 (en) 2002-06-19 2010-05-04 Siebel Systems, Inc. Method and device for processing a time-related data entry
US6839790B2 (en) 2002-06-21 2005-01-04 Smar Research Corporation Plug and play reconfigurable USB interface for industrial fieldbus network access
US7260505B2 (en) 2002-06-26 2007-08-21 Honeywell International, Inc. Method and apparatus for developing fault codes for complex systems based on historical data
US6973793B2 (en) 2002-07-08 2005-12-13 Field Diagnostic Services, Inc. Estimating evaporator airflow in vapor compression cycle cooling equipment
US6885949B2 (en) 2002-07-24 2005-04-26 Smar Research Corporation System and method for measuring system parameters and process variables using multiple sensors which are isolated by an intrinsically safe barrier
US7024665B2 (en) 2002-07-24 2006-04-04 Smar Research Corporation Control systems and methods for translating code from one format into another format
JP4023249B2 (en) 2002-07-25 2007-12-19 ダイキン工業株式会社 Compressor internal state estimating device and an air conditioner
US6799951B2 (en) 2002-07-25 2004-10-05 Carrier Corporation Compressor degradation detection system
DE10234091A1 (en) 2002-07-26 2004-02-05 Robert Bosch Gmbh Solenoid valve supply current monitoring method for a combustion engine, especially a motor vehicle engine, involves comparing the total valve supply current with a total theoretical value
US7337191B2 (en) 2002-07-27 2008-02-26 Siemens Building Technologies, Inc. Method and system for obtaining service related information about equipment located at a plurality of sites
US6725182B2 (en) 2002-07-31 2004-04-20 Smar Research Corporation System and method for monitoring devices and components
US6631298B1 (en) 2002-07-31 2003-10-07 Smar Research Corporation System and method for providing information in a particular format
US7009510B1 (en) 2002-08-12 2006-03-07 Phonetics, Inc. Environmental and security monitoring system with flexible alarm notification and status capability
US7063537B2 (en) 2002-08-15 2006-06-20 Smar Research Corporation Rotatable assemblies and methods of securing such assemblies
KR100494384B1 (en) 2002-09-03 2005-06-13 삼성전자주식회사 Output control apparatus for linear compressor and control method thereof
US20040049715A1 (en) 2002-09-05 2004-03-11 Jaw Link C. Computer networked intelligent condition-based engine/equipment management system
US7062580B2 (en) 2002-09-20 2006-06-13 Smar Research Corporation Logic arrangement, system and method for configuration and control in fieldbus applications
US20040059691A1 (en) 2002-09-20 2004-03-25 Higgins Robert L. Method for marketing energy-use optimization and retrofit services and devices
US6662653B1 (en) 2002-09-23 2003-12-16 Smar Research Corporation Sensor assemblies and methods of securing elongated members within such assemblies
US6854345B2 (en) 2002-09-23 2005-02-15 Smar Research Corporation Assemblies adapted to be affixed to containers containing fluid and methods of affixing such assemblies to containers
US6621443B1 (en) 2002-10-01 2003-09-16 Smar Res Corp System and method for an acquisition of data in a particular manner
US6987450B2 (en) 2002-10-02 2006-01-17 Honeywell International Inc. Method and apparatus for determining message response type in a security system
US6928389B2 (en) 2002-10-04 2005-08-09 Copeland Corporation Compressor performance calculator
US6870486B2 (en) 2002-10-07 2005-03-22 Smar Research Corporation System and method for utilizing a pasteurization sensor
US7088972B2 (en) 2002-10-15 2006-08-08 Honeywell Federal Manufacturing & Technologies, Llp Distributed data transmitter
US6622926B1 (en) 2002-10-16 2003-09-23 Emerson Electric Co. Thermostat with air conditioning load management feature
US6889173B2 (en) 2002-10-31 2005-05-03 Emerson Retail Services Inc. System for monitoring optimal equipment operating parameters
US6992452B1 (en) 2002-12-02 2006-01-31 Deka Products Limited Partnership Dynamic current limiting
US6804993B2 (en) 2002-12-09 2004-10-19 Smar Research Corporation Sensor arrangements and methods of determining a characteristic of a sample fluid using such sensor arrangements
US20040117166A1 (en) 2002-12-11 2004-06-17 Cesar Cassiolato Logic arrangement, system and method for automatic generation and simulation of a fieldbus network layout
US7030752B2 (en) 2002-12-18 2006-04-18 Honeywell International, Inc. Universal gateway module for interfacing a security system control to external peripheral devices
RU30009U1 (en) 2002-12-20 2003-06-10 Жидков Сергей Владимирович The control unit, protection and alarm piston compressor unit
US6968295B1 (en) 2002-12-31 2005-11-22 Ingersoll-Rand Company, Ir Retail Solutions Division Method of and system for auditing the energy-usage of a facility
US7145462B2 (en) 2003-01-10 2006-12-05 Honeywell International Inc. System and method for automatically generating an alert message with supplemental information
US20040140772A1 (en) 2003-01-21 2004-07-22 Geraldo Gullo System and process for providing a display arrangement on a device that may be limited by an intrinsic safety barrier
US20040140812A1 (en) 2003-01-21 2004-07-22 Ademir Scallante Arrangements containing electrical assemblies and methods of cleaning such electrical assemblies
US8521708B2 (en) 2003-01-22 2013-08-27 Siemens Industry, Inc. System and method for developing and processing building system control solutions
US7035693B2 (en) 2003-01-23 2006-04-25 Smar Research Corporation Fieldbus relay arrangement and method for implementing such arrangement
WO2004068693A3 (en) 2003-01-24 2005-03-24 Tecumseh Products Co Brushless and sensorless dc motor control system with locked and stopped rotor detection
US7584165B2 (en) 2003-01-30 2009-09-01 Landmark Graphics Corporation Support apparatus, method and system for real time operations and maintenance
WO2004070507A3 (en) 2003-02-07 2004-12-16 Power Measurement Ltd A method and system for calculating and distributing utility costs
US6931445B2 (en) 2003-02-18 2005-08-16 Statsignal Systems, Inc. User interface for monitoring remote devices
US7110843B2 (en) 2003-02-24 2006-09-19 Smar Research Corporation Arrangements and methods for monitoring processes and devices using a web service
JP3966194B2 (en) 2003-03-17 2007-08-29 株式会社デンソー Motor controller
US6837922B2 (en) 2003-03-21 2005-01-04 Barney F. Gorin Air filter sensor apparatus kit and method
US6983889B2 (en) 2003-03-21 2006-01-10 Home Comfort Zones, Inc. Forced-air zone climate control system for existing residential houses
US7392661B2 (en) 2003-03-21 2008-07-01 Home Comfort Zones, Inc. Energy usage estimation for climate control system
US6786473B1 (en) 2003-03-21 2004-09-07 Home Comfort Zones, Inc. String to tube or cable connector for pulling tubes or cables through ducts
CN100334349C (en) 2003-03-31 2007-08-29 日立工机株式会社 Air compressor and its controlling method
JP4129594B2 (en) 2003-04-15 2008-08-06 株式会社日立製作所 Air conditioning system
JP4009950B2 (en) 2003-04-15 2007-11-21 日立工機株式会社 Air compressor and a control method thereof
US7266812B2 (en) 2003-04-15 2007-09-04 Smar Research Corporation Arrangements, storage mediums and methods for transmitting a non-proprietary language device description file associated with a field device using a web service
US20040213384A1 (en) 2003-04-23 2004-10-28 Alles Harold Gene Remote access, control, and support of home automation system
US6998807B2 (en) 2003-04-25 2006-02-14 Itt Manufacturing Enterprises, Inc. Active sensing and switching device
US7490477B2 (en) 2003-04-30 2009-02-17 Emerson Retail Services, Inc. System and method for monitoring a condenser of a refrigeration system
US20040230899A1 (en) 2003-05-13 2004-11-18 Pagnano Marco Aurelio De Oliveira Arrangements, storage mediums and methods for associating an extensible stylesheet language device description file with a non- proprietary language device description file
US6775995B1 (en) 2003-05-13 2004-08-17 Copeland Corporation Condensing unit performance simulator and method
US20040230582A1 (en) 2003-05-13 2004-11-18 Pagnano Marco Aurelio De Oliveira Arrangement, storage medium and method for providing information which is obtained via a device type manager, and transmitted in an extensible mark-up language format or a hypertext mark-up language format
KR100517935B1 (en) 2003-05-26 2005-09-30 엘지전자 주식회사 Driving control apparatus and method for reciprocating compressor
EP1487077A3 (en) 2003-06-10 2005-04-20 Siemens Aktiengesellschaft Self-learning electronic fuse
US7350112B2 (en) 2003-06-16 2008-03-25 International Business Machines Corporation Automated diagnostic service
US7117125B2 (en) 2003-06-18 2006-10-03 Eaton Corporation System and method for proactive motor wellness diagnosis based on potential mechanical faults
US7201567B2 (en) 2003-06-20 2007-04-10 Emerson Climate Technologies, Inc. Plural compressors
US7636901B2 (en) 2003-06-27 2009-12-22 Cds Business Mapping, Llc System for increasing accuracy of geocode data
US7180412B2 (en) 2003-07-24 2007-02-20 Hunt Technologies, Inc. Power line communication system having time server
US6998963B2 (en) 2003-07-24 2006-02-14 Hunt Technologies, Inc. Endpoint receiver system
US7742393B2 (en) 2003-07-24 2010-06-22 Hunt Technologies, Inc. Locating endpoints in a power line communication system
US7102490B2 (en) 2003-07-24 2006-09-05 Hunt Technologies, Inc. Endpoint transmitter and power generation system
US7145438B2 (en) 2003-07-24 2006-12-05 Hunt Technologies, Inc. Endpoint event processing system
US7236765B2 (en) 2003-07-24 2007-06-26 Hunt Technologies, Inc. Data communication over power lines
US6813897B1 (en) 2003-07-29 2004-11-09 Hewlett-Packard Development Company, L.P. Supplying power to at least one cooling system component
KR100524726B1 (en) 2003-08-14 2005-10-31 엘지전자 주식회사 Driving circuit of reciprocating compressor
US6851621B1 (en) 2003-08-18 2005-02-08 Honeywell International Inc. PDA diagnosis of thermostats
US7124057B2 (en) 2003-08-19 2006-10-17 Festo Corporation Method and apparatus for diagnosing a cyclic system
DE10338789B4 (en) 2003-08-23 2005-10-27 Bayerische Motoren Werke Ag Door locking system for a motor vehicle
CN100489419C (en) 2003-08-25 2009-05-20 计算机程序控制公司 Refrigeration system and method
US7072797B2 (en) 2003-08-29 2006-07-04 Honeywell International, Inc. Trending system and method using monotonic regression
KR20050028391A (en) 2003-09-17 2005-03-23 엘지전자 주식회사 A refrigerants leakage sensing system and method
US7216498B2 (en) 2003-09-25 2007-05-15 Tecumseh Products Company Method and apparatus for determining supercritical pressure in a heat exchanger
US8234876B2 (en) 2003-10-15 2012-08-07 Ice Energy, Inc. Utility managed virtual power plant utilizing aggregated thermal energy storage
US7440767B2 (en) 2003-10-15 2008-10-21 Eaton Corporation Home system including a portable fob having a rotary menu and a display
US7089125B2 (en) 2003-10-27 2006-08-08 Itron, Inc. Distributed asset optimization (DAO) system and method
US7255285B2 (en) 2003-10-31 2007-08-14 Honeywell International Inc. Blocked flue detection methods and systems
US6956344B2 (en) 2003-10-31 2005-10-18 Hewlett-Packard Development Company, L.P. High availability fan system
US7053766B2 (en) 2003-11-03 2006-05-30 Honeywell International, Inc. Self-testing system and method
US7440560B1 (en) 2003-11-17 2008-10-21 At&T Corp. Schema for empirical-based remote-access internet connection
US7126465B2 (en) 2003-11-17 2006-10-24 Honeywell International, Inc. Monitoring system and method
US7274995B2 (en) 2003-11-19 2007-09-25 Honeywell International Inc. Apparatus and method for identifying possible defect indicators for a valve
US7286945B2 (en) 2003-11-19 2007-10-23 Honeywell International Inc. Apparatus and method for identifying possible defect indicators for a valve
US20050126190A1 (en) 2003-12-10 2005-06-16 Alexander Lifson Loss of refrigerant charge and expansion valve malfunction detection
US7343750B2 (en) 2003-12-10 2008-03-18 Carrier Corporation Diagnosing a loss of refrigerant charge in a refrigerant system
US6993414B2 (en) 2003-12-18 2006-01-31 Carrier Corporation Detection of clogged filter in an HVAC system
JP4237610B2 (en) 2003-12-19 2009-03-11 株式会社東芝 Maintenance support method, and program
US7039300B2 (en) 2003-12-19 2006-05-02 Carrier Corporation Identification of electric heater capacity
JP3939292B2 (en) 2003-12-24 2007-07-04 三星電子株式会社Samsung Electronics Co.,Ltd. Air conditioning apparatus
US7096153B2 (en) 2003-12-31 2006-08-22 Honeywell International Inc. Principal component analysis based fault classification
US7447609B2 (en) 2003-12-31 2008-11-04 Honeywell International Inc. Principal component analysis based fault classification
US7042350B2 (en) 2003-12-31 2006-05-09 Honeywell International, Inc. Security messaging system
US7308384B2 (en) 2004-01-20 2007-12-11 Carrier Corporation Ordered record of system-wide fault in an HVAC system
US7212887B2 (en) 2004-01-20 2007-05-01 Carrier Corporation Service and diagnostic tool for HVAC systems
US7606683B2 (en) 2004-01-27 2009-10-20 Emerson Climate Technologies, Inc. Cooling system design simulator
US7580812B2 (en) 2004-01-28 2009-08-25 Honeywell International Inc. Trending system and method using window filtering
US7574333B2 (en) 2004-02-05 2009-08-11 Honeywell International Inc. Apparatus and method for modeling relationships between signals
US7363200B2 (en) 2004-02-05 2008-04-22 Honeywell International Inc. Apparatus and method for isolating noise effects in a signal
JP3856035B2 (en) 2004-02-24 2006-12-13 ダイキン工業株式会社 Air conditioning monitoring and control system
US7130170B2 (en) 2004-02-25 2006-10-31 Siemens Energy & Automation, Inc. System and method for fault contactor detection
JP4265982B2 (en) 2004-02-25 2009-05-20 三菱電機ビルテクノサービス株式会社 Equipment diagnostic equipment, refrigeration cycle equipment, refrigeration cycle monitoring system
WO2005083531A1 (en) 2004-02-27 2005-09-09 Matsushita Electric Industrial Co., Ltd. Device control method and device control apparatus
US20050194456A1 (en) 2004-03-02 2005-09-08 Tessier Patrick C. Wireless controller with gateway
US8031650B2 (en) 2004-03-03 2011-10-04 Sipco, Llc System and method for monitoring remote devices with a dual-mode wireless communication protocol
US7756086B2 (en) 2004-03-03 2010-07-13 Sipco, Llc Method for communicating in dual-modes
US7227450B2 (en) 2004-03-12 2007-06-05 Honeywell International, Inc. Internet facilitated fire alarm monitoring, control system and method
JP4722493B2 (en) 2004-03-24 2011-07-13 株式会社デンソー Fluid machinery
US7200468B2 (en) 2004-04-05 2007-04-03 John Ruhnke System for determining overall heating and cooling system efficienies
US8332178B2 (en) 2004-04-13 2012-12-11 Honeywell International Inc. Remote testing of HVAC systems
US20050229777A1 (en) 2004-04-16 2005-10-20 Brown Jeffrey A Method and apparatus for filtering particulate matter from an air-flow
US20050232781A1 (en) 2004-04-19 2005-10-20 Herbert Jay A Permanent low cost radio frequency compressor identification
US20050229612A1 (en) 2004-04-19 2005-10-20 Hrejsa Peter B Compression cooling system and method for evaluating operation thereof
US7261762B2 (en) 2004-05-06 2007-08-28 Carrier Corporation Technique for detecting and predicting air filter condition
US7031880B1 (en) 2004-05-07 2006-04-18 Johnson Controls Technology Company Method and apparatus for assessing performance of an environmental control system
US20050262923A1 (en) 2004-05-27 2005-12-01 Lawrence Kates Method and apparatus for detecting conditions favorable for growth of fungus
WO2006083290A3 (en) 2004-06-07 2007-04-19 Entegris Inc System and method for removing contaminants
US7010925B2 (en) 2004-06-07 2006-03-14 Carrier Corporation Method of controlling a carbon dioxide heat pump water heating system
US7503182B2 (en) 2004-06-11 2009-03-17 Emerson Climate Technologies, Inc. Condensing unit configuration system
US7123020B2 (en) 2004-06-28 2006-10-17 Honeywell International Inc. System and method of fault detection in a warm air furnace
US7483810B2 (en) 2004-06-29 2009-01-27 Honeywell International Inc. Real time event logging system
US7905095B2 (en) 2004-07-16 2011-03-15 Spx Corporation System for refrigerant charging with constant volume tank
JP2008515030A (en) 2004-07-19 2008-05-08 ユナイテッド テクノロジーズ コーポレイションUnited Technologies Corporation System and method for fault code driven maintenance system
US7110898B2 (en) 2004-07-26 2006-09-19 Agilent Technologies, Inc. Method for digitally acquiring and compensating signals
US7159408B2 (en) 2004-07-28 2007-01-09 Carrier Corporation Charge loss detection and prognostics for multi-modular split systems
JP4389716B2 (en) 2004-08-05 2009-12-24 トヨタ自動車株式会社 Control device for a continuously variable transmission
JP4696491B2 (en) 2004-08-05 2011-06-08 ダイキン工業株式会社 A control device and a control method and the air conditioner and a control method of the compressor
EP1781996A2 (en) 2004-08-11 2007-05-09 Lawrence Kates Method and apparatus for monitoring refrigerant-cycle systems
US7424343B2 (en) 2004-08-11 2008-09-09 Lawrence Kates Method and apparatus for load reduction in an electric power system
US7275377B2 (en) 2004-08-11 2007-10-02 Lawrence Kates Method and apparatus for monitoring refrigerant-cycle systems
US8109104B2 (en) 2004-08-25 2012-02-07 York International Corporation System and method for detecting decreased performance in a refrigeration system
US7188482B2 (en) 2004-08-27 2007-03-13 Carrier Corporation Fault diagnostics and prognostics based on distance fault classifiers
KR100583197B1 (en) 2004-08-31 2006-05-26 삼성전자주식회사 Apparatus and method of controlling linear compressor
JP4529603B2 (en) 2004-09-14 2010-08-25 ダイキン工業株式会社 Separate type air conditioner
US8132225B2 (en) 2004-09-30 2012-03-06 Rockwell Automation Technologies, Inc. Scalable and flexible information security for industrial automation
US7905103B2 (en) 2004-09-30 2011-03-15 Danfoss A/S Model prediction controlled refrigeration system
US7156316B2 (en) 2004-10-06 2007-01-02 Lawrence Kates Zone thermostat for zone heating and cooling
US7263446B2 (en) 2004-10-29 2007-08-28 Honeywell International, Inc. Structural health management system and method for enhancing availability and integrity in the structural health management system
US7234313B2 (en) 2004-11-02 2007-06-26 Stargate International, Inc. HVAC monitor and superheat calculator system
US7447603B2 (en) 2004-12-13 2008-11-04 Veris Industries, Llc Power meter
US7648077B2 (en) 2005-12-13 2010-01-19 Emerson Electric Co. HVAC communication system
CA2693514C (en) 2004-12-14 2013-10-15 Comverge Inc. Hvac communication system
US20060123807A1 (en) 2004-12-14 2006-06-15 Sullivan C B Apparatus and method for monitoring and displaying power usage
EP1836576B1 (en) 2004-12-17 2012-02-01 Korea Research Institute of Standards and Science A precision diagnostic method for the failure protection and predictive maintenance of a vacuum pump and a precision diagnostic system therefor
US20060140209A1 (en) 2004-12-23 2006-06-29 Smar Research Corporation Field device, system and process for multi-protocol field device emulator
US7552596B2 (en) 2004-12-27 2009-06-30 Carrier Corporation Dual thermochromic liquid crystal temperature sensing for refrigerant charge indication
US20060137368A1 (en) 2004-12-27 2006-06-29 Carrier Corporation Visual display of temperature differences for refrigerant charge indication
US7712319B2 (en) 2004-12-27 2010-05-11 Carrier Corporation Refrigerant charge adequacy gauge
US7789643B2 (en) 2005-01-10 2010-09-07 EMS Global Inc. In situ pipe repair controller and system
US7142125B2 (en) 2005-01-24 2006-11-28 Hewlett-Packard Development Company, L.P. Fan monitoring for failure prediction
US9439126B2 (en) 2005-01-25 2016-09-06 Sipco, Llc Wireless network protocol system and methods
US7438079B2 (en) 2005-02-04 2008-10-21 Air Products And Chemicals, Inc. In-line gas purity monitoring and control system
US7377118B2 (en) 2005-02-16 2008-05-27 Zero Zone, Inc. Refrigerant tracking/leak detection system and method
US7640758B2 (en) 2005-02-16 2010-01-05 Zero Zone, Inc. Refrigerant tracking/leak detection system and method
EP1851959B1 (en) 2005-02-21 2012-04-11 Computer Process Controls, Inc. Enterprise control and monitoring system
US7296426B2 (en) 2005-02-23 2007-11-20 Emerson Electric Co. Interactive control system for an HVAC system
ES2510665T3 (en) 2005-02-24 2014-10-21 Mitsubishi Electric Corporation Air conditioning system
US7443313B2 (en) 2005-03-04 2008-10-28 Hunt Technologies, Inc. Water utility meter transceiver
JP2006274807A (en) 2005-03-28 2006-10-12 Hitachi Ltd Lateral scroll compressor
US7317952B2 (en) 2005-04-07 2008-01-08 Honeywell International Inc. Managing field devices having different device description specifications in a process control system
CN100580347C (en) 2005-04-07 2010-01-13 大金工业株式会社 Air conditioner coolant amount judgment system
US7802144B2 (en) 2005-04-15 2010-09-21 Microsoft Corporation Model-based system monitoring
US8036853B2 (en) 2005-04-26 2011-10-11 Emerson Climate Technologies, Inc. Compressor memory system and method
US20060256488A1 (en) 2005-05-11 2006-11-16 Eaton Corporation Medium voltage motor starter including a contactor having motor protection relay functionality
US8156751B2 (en) 2005-05-24 2012-04-17 Emerson Climate Technologies, Inc. Control and protection system for a variable capacity compressor
US7660774B2 (en) 2005-05-31 2010-02-09 Honeywell International Inc. Nonlinear neural network fault detection system and method
US7336168B2 (en) 2005-06-06 2008-02-26 Lawrence Kates System and method for variable threshold sensor
US7434742B2 (en) 2005-06-20 2008-10-14 Emerson Electric Co. Thermostat capable of displaying received information
JP2007006566A (en) 2005-06-22 2007-01-11 Hitachi Ltd Motor controller
WO2007005001A1 (en) 2005-06-30 2007-01-11 Siemens Aktiengesellschaft Method and arrangement for optimized maintenance of components
JP4151679B2 (en) 2005-07-07 2008-09-17 三菱電機株式会社 Refrigeration cycle system
US7433854B2 (en) 2005-07-21 2008-10-07 Honeywell International Inc. Backward chaining with extended knowledge base network
US20070027735A1 (en) 2005-07-27 2007-02-01 Mark Rokos Methods and apparatus for managing a plurality of geographically dispersed properties
DE102005038225A1 (en) 2005-08-12 2007-02-15 Robert Bosch Gmbh Method and apparatus for an overload detection at hand tools
US7400240B2 (en) 2005-08-16 2008-07-15 Honeywell International, Inc. Systems and methods of deterministic annunciation
US7351274B2 (en) 2005-08-17 2008-04-01 American Standard International Inc. Air filtration system control
US8150720B2 (en) 2005-08-29 2012-04-03 Emerson Retail Services, Inc. Dispatch management model
US20070067512A1 (en) 2005-09-19 2007-03-22 Smar Research Corporation Method, system and software arrangement for processing a device support file for a field device
US7230528B2 (en) 2005-09-20 2007-06-12 Lawrence Kates Programmed wireless sensor system
RU55218U1 (en) 2005-09-26 2006-07-27 Юрий Рафаилович Гаврилов Device for protection of refrigerators, air conditioners and other equipment user from overvoltage and undervoltage on the mains supply, as well as failure and reoccurs in the mains voltage
JP2009512097A (en) 2005-10-18 2009-03-19 ハネウェル・インターナショナル・インコーポレーテッド System for early event detection, method, and computer program
US7752853B2 (en) 2005-10-21 2010-07-13 Emerson Retail Services, Inc. Monitoring refrigerant in a refrigeration system
US7665315B2 (en) 2005-10-21 2010-02-23 Emerson Retail Services, Inc. Proofing a refrigeration system operating state
US20070089435A1 (en) 2005-10-21 2007-04-26 Abtar Singh Predicting maintenance in a refrigeration system
US7752854B2 (en) 2005-10-21 2010-07-13 Emerson Retail Services, Inc. Monitoring a condenser in a refrigeration system
US7596959B2 (en) 2005-10-21 2009-10-06 Emerson Retail Services, Inc. Monitoring compressor performance in a refrigeration system
US7594407B2 (en) 2005-10-21 2009-09-29 Emerson Climate Technologies, Inc. Monitoring refrigerant in a refrigeration system
US7706320B2 (en) 2005-10-28 2010-04-27 Hunt Technologies, Llc Mesh based/tower based network
US7310953B2 (en) 2005-11-09 2007-12-25 Emerson Climate Technologies, Inc. Refrigeration system including thermoelectric module
US7257501B2 (en) 2005-11-17 2007-08-14 Honeywell International Inc. Apparatus and method for identifying informative data in a process control environment
US7421374B2 (en) 2005-11-17 2008-09-02 Honeywell International Inc. Apparatus and method for analyzing model quality in a process control environment
US8156208B2 (en) 2005-11-21 2012-04-10 Sap Ag Hierarchical, multi-tiered mapping and monitoring architecture for service-to-device re-mapping for smart items
JP4120676B2 (en) 2005-12-16 2008-07-16 ダイキン工業株式会社 Air conditioning apparatus
US7528711B2 (en) 2005-12-19 2009-05-05 Lawrence Kates Portable monitoring unit
US7451606B2 (en) 2006-01-06 2008-11-18 Johnson Controls Technology Company HVAC system analysis tool
US8780726B2 (en) 2006-01-10 2014-07-15 Honeywell International Inc. Remote communications diagnostics using analog data analysis
US7414525B2 (en) 2006-01-11 2008-08-19 Honeywell International Inc. Remote monitoring of remediation systems
US7686872B2 (en) 2006-01-12 2010-03-30 Hall Climate Control Corporation Device for and method of informing replacement time of air filter
US7631508B2 (en) 2006-01-18 2009-12-15 Purdue Research Foundation Apparatus and method for determining refrigerant charge level
CN101361244B (en) 2006-01-20 2011-07-06 开利公司 Electronic method for starting compressor
US20070204921A1 (en) 2006-03-01 2007-09-06 Home Comfort Zones, Inc. Valve manifold
US7295896B2 (en) 2006-03-24 2007-11-13 York International Corporation Automated part procurement and service dispatch
US7848827B2 (en) 2006-03-31 2010-12-07 Honeywell International Inc. Apparatus, system, and method for wireless diagnostics
WO2007122682A1 (en) 2006-04-14 2007-11-01 Sun Engineering Co., Ltd. Dust suction apparatus
US7533070B2 (en) 2006-05-30 2009-05-12 Honeywell International Inc. Automatic fault classification for model-based process monitoring
US8590325B2 (en) 2006-07-19 2013-11-26 Emerson Climate Technologies, Inc. Protection and diagnostic module for a refrigeration system
US7444251B2 (en) 2006-08-01 2008-10-28 Mitsubishi Electric Research Laboratories, Inc. Detecting and diagnosing faults in HVAC equipment
US7774101B2 (en) 2006-08-30 2010-08-10 Ballate Orlando E System and method for managing buildings
US20080216494A1 (en) 2006-09-07 2008-09-11 Pham Hung M Compressor data module
WO2008079108A1 (en) 2006-12-20 2008-07-03 Carrier Corporation Refrigerant charge indication
US8031455B2 (en) 2007-01-05 2011-10-04 American Power Conversion Corporation System and method for circuit overcurrent protection
US7496472B2 (en) 2007-01-25 2009-02-24 Johnson Controls Technology Company Method and system for assessing performance of control systems
US20080319688A1 (en) 2007-02-26 2008-12-25 Hyeung-Yun Kim Usage monitoring system of gas tank
JP2008232531A (en) 2007-03-20 2008-10-02 Toshiba Corp Remote performance monitoring device and method
US20080315000A1 (en) 2007-06-21 2008-12-25 Ravi Gorthala Integrated Controller And Fault Indicator For Heating And Cooling Systems
US20090037142A1 (en) 2007-07-30 2009-02-05 Lawrence Kates Portable method and apparatus for monitoring refrigerant-cycle systems
WO2009022453A1 (en) 2007-08-10 2009-02-19 Daikin Industries, Ltd. Monitoring system for air conditioner
US8393169B2 (en) 2007-09-19 2013-03-12 Emerson Climate Technologies, Inc. Refrigeration monitoring system and method
US20090092502A1 (en) 2007-10-08 2009-04-09 Emerson Climate Technologies, Inc. Compressor having a power factor correction system and method
US8448459B2 (en) 2007-10-08 2013-05-28 Emerson Climate Technologies, Inc. System and method for evaluating parameters for a refrigeration system with a variable speed compressor
US9140728B2 (en) 2007-11-02 2015-09-22 Emerson Climate Technologies, Inc. Compressor sensor module
US8160827B2 (en) 2007-11-02 2012-04-17 Emerson Climate Technologies, Inc. Compressor sensor module
JP2009229184A (en) 2008-03-21 2009-10-08 Kansai Electric Power Co Inc:The Harmonic probing method and device
JP2009002651A (en) 2008-10-06 2009-01-08 Daikin Ind Ltd Abnormality diagnosis system
CN101466193B (en) 2009-01-16 2012-11-21 江苏联宏自动化系统工程有限公司 Method for monitoring lighting lamp power factor compensation capacitance fault
EP2389714A4 (en) 2009-01-26 2015-08-19 Geneva Cleantech Inc Methods and apparatus for power factor correction and reduction of distortion in and noise in a power supply delivery network
US8279565B2 (en) 2009-02-20 2012-10-02 Won-Door Corporation Methods and systems relating to overcurrent circuit protection
US20100217550A1 (en) 2009-02-26 2010-08-26 Jason Crabtree System and method for electric grid utilization and optimization
US20110083450A1 (en) 2009-10-14 2011-04-14 Carrier Corporation Refrigerant System With Stator Heater
US20110112814A1 (en) 2009-11-11 2011-05-12 Emerson Retail Services, Inc. Refrigerant leak detection system and method
US8965927B2 (en) 2010-07-30 2015-02-24 Rbm Technologies Managing facilities
WO2012065078A3 (en) 2010-11-11 2012-10-04 Rutgers, The State University Of New Jersey System and method to measure and control power consumption in a residential or commercial building via a wall socket to ensure optimum energy usage therein
US9104211B2 (en) 2010-11-19 2015-08-11 Google Inc. Temperature controller with model-based time to target calculation and display
CN103403463B (en) 2011-03-02 2016-06-01 开利公司 Fault detection and diagnosis algorithm
US20120271673A1 (en) 2011-03-14 2012-10-25 Dennis Riley Systems and Methods for Facility Management and Maintenance Tracking
US9168315B1 (en) 2011-09-07 2015-10-27 Mainstream Engineering Corporation Cost-effective remote monitoring, diagnostic and system health prediction system and method for vapor compression and heat pump units based on compressor discharge line temperature sampling
US8983670B2 (en) 2011-09-14 2015-03-17 Honeywell International Inc. Energy consumption disaggregation system
US8964338B2 (en) 2012-01-11 2015-02-24 Emerson Climate Technologies, Inc. System and method for compressor motor protection
WO2013130799A1 (en) 2012-02-28 2013-09-06 Emerson Climate Technologies, Inc. Hvac system remote monitoring and diagnosis
US9310439B2 (en) 2012-09-25 2016-04-12 Emerson Climate Technologies, Inc. Compressor having a control and diagnostic module
US9803902B2 (en) 2013-03-15 2017-10-31 Emerson Climate Technologies, Inc. System for refrigerant charge verification using two condenser coil temperatures
CN105074344B (en) 2013-03-15 2018-02-23 艾默生电气公司 Hvac system monitoring and remote diagnostics
US9551504B2 (en) 2013-03-15 2017-01-24 Emerson Electric Co. HVAC system remote monitoring and diagnosis
CA2908362C (en) 2013-04-05 2018-01-16 Fadi M. Alsaleem Heat-pump system with refrigerant charge diagnostics

Patent Citations (102)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2054542A (en) * 1934-06-21 1936-09-15 Hoelle William Refrigerating machine indicator
US3735377A (en) * 1971-03-19 1973-05-22 Phillips Petroleum Co Monitoring and shutdown apparatus
US3783681A (en) * 1972-01-22 1974-01-08 Maschf Augsburg Nuernberg Ag Method and apparatus to monitor quality of operation of a piston in a cylinder
US4038061A (en) * 1975-12-29 1977-07-26 Heil-Quaker Corporation Air conditioner control
US4161106A (en) * 1977-02-28 1979-07-17 Water Chemists, Inc. Apparatus and method for determining energy waste in refrigeration units
US4102394A (en) * 1977-06-10 1978-07-25 Energy 76, Inc. Control unit for oil wells
US4146085A (en) * 1977-10-03 1979-03-27 Borg-Warner Corporation Diagnostic system for heat pump
US4372119A (en) * 1979-10-29 1983-02-08 Saab-Scania Aktiebolag Method of avoiding abnormal combination in an internal combination engine and an arrangement for carrying out the method
US4502843A (en) * 1980-03-31 1985-03-05 Noodle Corporation Valveless free plunger and system for well pumping
US4345162A (en) * 1980-06-30 1982-08-17 Honeywell Inc. Method and apparatus for power load shedding
US4390321A (en) * 1980-10-14 1983-06-28 American Davidson, Inc. Control apparatus and method for an oil-well pump assembly
US4425010A (en) * 1980-11-12 1984-01-10 Reliance Electric Company Fail safe dynamoelectric machine bearing
US4387368A (en) * 1980-12-03 1983-06-07 Borg-Warner Corporation Telemetry system for centrifugal water chilling systems
US4325223A (en) * 1981-03-16 1982-04-20 Cantley Robert J Energy management system for refrigeration systems
US4399548A (en) * 1981-04-13 1983-08-16 Castleberry Kimberly N Compressor surge counter
US4496296A (en) * 1982-01-13 1985-01-29 Hitachi, Ltd. Device for pressing orbiting scroll member in scroll type fluid machine
US4390922A (en) * 1982-02-04 1983-06-28 Pelliccia Raymond A Vibration sensor and electrical power shut off device
US4429578A (en) * 1982-03-22 1984-02-07 General Electric Company Acoustical defect detection system
US4441329A (en) * 1982-07-06 1984-04-10 Dawley Robert E Temperature control system
US4642034A (en) * 1983-11-08 1987-02-10 Sanden Corporation Scroll type compressor with displacement adjusting mechanism
US4520674A (en) * 1983-11-14 1985-06-04 Technology For Energy Corporation Vibration monitoring device
US4583373A (en) * 1984-02-14 1986-04-22 Dunham-Bush, Inc. Constant evaporator pressure slide valve modulator for screw compressor refrigeration system
US4655688A (en) * 1984-05-30 1987-04-07 Itt Industries, Inc. Control for liquid ring vacuum pumps
US4653285A (en) * 1985-09-20 1987-03-31 General Electric Company Self-calibrating control methods and systems for refrigeration systems
US4831560A (en) * 1986-01-15 1989-05-16 Zaleski James V Method for testing auto electronics systems
US4909076A (en) * 1987-08-04 1990-03-20 Pruftechik, Dieter Busch & Partner GmbH & Co. Cavitation monitoring device for pumps
US4798055A (en) * 1987-10-28 1989-01-17 Kent-Moore Corporation Refrigeration system analyzer
US5103391A (en) * 1987-11-06 1992-04-07 M. T. Mcbrian Inc. Control system for controlling environmental conditions in a closed building or other conditions
US5311451A (en) * 1987-11-06 1994-05-10 M. T. Mcbrian Company, Inc. Reconfigurable controller for monitoring and controlling environmental conditions
US4985857A (en) * 1988-08-19 1991-01-15 General Motors Corporation Method and apparatus for diagnosing machines
US4858676A (en) * 1988-10-05 1989-08-22 Ford Motor Company Airconditioning system for a vehicle
US4970496A (en) * 1989-09-08 1990-11-13 Lee Mechanical, Inc. Vehicular monitoring system
US5018665A (en) * 1990-02-13 1991-05-28 Hale Fire Pump Company Thermal relief valve
US5009075A (en) * 1990-04-20 1991-04-23 American Standard Inc. Fault determination test method for systems including an electronic expansion valve and electronic controller
US5109700A (en) * 1990-07-13 1992-05-05 Life Systems, Inc. Method and apparatus for analyzing rotating machines
US5042264A (en) * 1990-09-21 1991-08-27 Carrier Corporation Method for detecting and correcting reversing valve failures in heat pump systems having a variable speed compressor
US5199855A (en) * 1990-09-27 1993-04-06 Zexel Corporation Variable capacity compressor having a capacity control system using an electromagnetic valve
US5320506A (en) * 1990-10-01 1994-06-14 Copeland Corporation Oldham coupling for scroll compressor
US5115406A (en) * 1990-10-05 1992-05-19 Gateshead Manufacturing Corporation Rotating machinery diagnostic system
US5203178A (en) * 1990-10-30 1993-04-20 Norm Pacific Automation Corp. Noise control of air conditioner
US5209400A (en) * 1991-03-07 1993-05-11 John M. Winslow Portable calculator for refrigeration heating and air conditioning equipment service
US5291752A (en) * 1991-05-13 1994-03-08 Alvarez Robert J Integrally formed, modular ice cuber having a stainless steel evaporator and a microcontroller
US5279458A (en) * 1991-08-12 1994-01-18 Carrier Corporation Network management control
US6081750A (en) * 1991-12-23 2000-06-27 Hoffberg; Steven Mark Ergonomic man-machine interface incorporating adaptive pattern recognition based control system
US5336058A (en) * 1992-02-18 1994-08-09 Sanden Corporation Scroll-type compressor with variable displacement mechanism
US5335507A (en) * 1992-03-04 1994-08-09 Ecoair Corporated Control system for an air conditioning/refrigeration system
US5416781A (en) * 1992-03-17 1995-05-16 Johnson Service Company Integrated services digital network based facility management system
US5299504A (en) * 1992-06-30 1994-04-05 Technical Rail Products, Incorporated Self-propelled rail heater car with movable induction heating coils
US5224835A (en) * 1992-09-02 1993-07-06 Viking Pump, Inc. Shaft bearing wear detector
US5481481A (en) * 1992-11-23 1996-01-02 Architectural Engergy Corporation Automated diagnostic system having temporally coordinated wireless sensors
US5381692A (en) * 1992-12-09 1995-01-17 United Technologies Corporation Bearing assembly monitoring system
US5248244A (en) * 1992-12-21 1993-09-28 Carrier Corporation Scroll compressor with a thermally responsive bypass valve
US5290154A (en) * 1992-12-23 1994-03-01 American Standard Inc. Scroll compressor reverse phase and high discharge temperature protection
US5303560A (en) * 1993-04-15 1994-04-19 Thermo King Corporation Method and apparatus for monitoring and controlling the operation of a refrigeration unit
US5548966A (en) * 1993-05-03 1996-08-27 Copeland Corporation Refrigerant recovery system
US5511387A (en) * 1993-05-03 1996-04-30 Copeland Corporation Refrigerant recovery system
US5535597A (en) * 1993-08-11 1996-07-16 Samsung Electronics Co., Ltd. Refrigerator and method for controlling the same
US5423192A (en) * 1993-08-18 1995-06-13 General Electric Company Electronically commutated motor for driving a compressor
US5956658A (en) * 1993-09-18 1999-09-21 Diagnostic Instruments Limited Portable data collection apparatus for collecting maintenance data from a field tour
US5423190A (en) * 1994-03-28 1995-06-13 Thermo King Corporation Apparatus for evacuating and charging a refrigeration unit
US5446677A (en) * 1994-04-28 1995-08-29 Johnson Service Company Diagnostic system for use in an environment control network
US5499512A (en) * 1994-05-09 1996-03-19 Thermo King Corporation Methods and apparatus for converting a manually operable refrigeration unit to remote operation
US5610339A (en) * 1994-10-20 1997-03-11 Ingersoll-Rand Company Method for collecting machine vibration data
US5602757A (en) * 1994-10-20 1997-02-11 Ingersoll-Rand Company Vibration monitoring system
US5616829A (en) * 1995-03-09 1997-04-01 Teledyne Industries Inc. Abnormality detection/suppression system for a valve apparatus
US20030094004A1 (en) * 1995-06-07 2003-05-22 Pham Hung M. Adaptive control for a cooling system
US5641270A (en) * 1995-07-31 1997-06-24 Waters Investments Limited Durable high-precision magnetostrictive pump
US6050780A (en) * 1995-10-25 2000-04-18 Ishikawajima-Harima Heavy Industries Co., Ltd. Method for driving a high speed compressor
US5655379A (en) * 1995-10-27 1997-08-12 General Electric Company Refrigerant level control in a refrigeration system
US5807336A (en) * 1996-08-02 1998-09-15 Sabratek Corporation Apparatus for monitoring and/or controlling a medical device
US5795381A (en) * 1996-09-09 1998-08-18 Memc Electrical Materials, Inc. SIO probe for real-time monitoring and control of oxygen during czochralski growth of single crystal silicon
US6035661A (en) * 1996-09-30 2000-03-14 Sanyo Electric Co., Ltd. Refrigerant compressor and cooling apparatus comprising the same
US6360551B1 (en) * 1997-05-30 2002-03-26 Ecotechnics S.P.A. Method and device for testing and diagnosing an automotive air conditioning system
US6057771A (en) * 1997-06-24 2000-05-02 Planer Products Ltd. Fluid delivery apparatus
US6986469B2 (en) * 1997-09-19 2006-01-17 Electric City Corporation Method and apparatus for energy recovery in an environmental control system
US6571586B1 (en) * 1997-10-16 2003-06-03 Michael Ritson Portable wringer
US6092378A (en) * 1997-12-22 2000-07-25 Carrier Corporation Vapor line pressure control
US6199018B1 (en) * 1998-03-04 2001-03-06 Emerson Electric Co. Distributed diagnostic system
US6042344A (en) * 1998-07-13 2000-03-28 Carrier Corporation Control of scroll compressor at shutdown to prevent unpowered reverse rotation
US5947701A (en) * 1998-09-16 1999-09-07 Scroll Technologies Simplified scroll compressor modulation control
US6082971A (en) * 1998-10-30 2000-07-04 Ingersoll-Rand Company Compressor control system and method
US5987903A (en) * 1998-11-05 1999-11-23 Daimlerchrysler Corporation Method and device to detect the charge level in air conditioning systems
US6279332B1 (en) * 1999-08-05 2001-08-28 Samsung Electronics Co., Ltd. Performance testing method of air conditioner
US6505475B1 (en) * 1999-08-20 2003-01-14 Hudson Technologies Inc. Method and apparatus for measuring and improving efficiency in refrigeration systems
US20010005320A1 (en) * 1999-11-30 2001-06-28 Matsushita Elecric Industrial Co., Ltd. Linear compressor driving device, medium and information assembly
US6276901B1 (en) * 1999-12-13 2001-08-21 Tecumseh Products Company Combination sight glass and sump oil level sensor for a hermetic compressor
US6453687B2 (en) * 2000-01-07 2002-09-24 Robertshaw Controls Company Refrigeration monitor unit
US6934862B2 (en) * 2000-01-07 2005-08-23 Robertshaw Controls Company Appliance retrofit monitoring device with a memory storing an electronic signature
US6438981B1 (en) * 2000-06-06 2002-08-27 Jay Daniel Whiteside System for analyzing and comparing current and prospective refrigeration packages
US20050166610A1 (en) * 2000-11-22 2005-08-04 Nagaraj Jayanth Cooling system diagnostic system apparatus and method
US7174728B2 (en) * 2000-11-22 2007-02-13 Emerson Climate Technologies, Inc. Remote data acquisition system and method
US6601397B2 (en) * 2001-03-16 2003-08-05 Copeland Corporation Digital scroll condensing unit controller
US20040187502A1 (en) * 2001-03-27 2004-09-30 Nagaraj Jayanth Compressor diagnostic system
US7079967B2 (en) * 2001-05-11 2006-07-18 Field Diagnostic Services, Inc. Apparatus and method for detecting faults and providing diagnostics in vapor compression cycle equipment
US20030108430A1 (en) * 2001-12-10 2003-06-12 Matsushita Electric Industrial Co., Ltd. Driving apparatus of a linear compressor
US20050103036A1 (en) * 2002-04-10 2005-05-19 Daikin Industries , Ltd. Compressor unit and refrigerator using the unit
US6711911B1 (en) * 2002-11-21 2004-03-30 Carrier Corporation Expansion valve control
US20040184627A1 (en) * 2003-03-21 2004-09-23 Kost Michael A. Systems and methods for protection of audio amplifier circuits
US7491034B2 (en) * 2003-12-30 2009-02-17 Emerson Climate Technologies, Inc. Compressor protection and diagnostic system
US6981384B2 (en) * 2004-03-22 2006-01-03 Carrier Corporation Monitoring refrigerant charge
US7484376B2 (en) * 2004-04-27 2009-02-03 Emerson Climate Technologies, Inc. Compressor diagnostic and protection system and method
US20050235660A1 (en) * 2004-04-27