Matches 1 - 50 out of 67 1 2 >


Match Document Document Title
US20150068231 HVAC System with Electronically Controlled Expansion Valve  
A two temperature electronic expansion valve control for variable speed compressors that utilizes a correlation between airflow percentage and heat exchanger pressure drop to control the operation...
US20150052924 Thermal Expansion Valve with Power Element  
An improved power element for use with a thermal expansion valve. The power element contains a filter positioned at an open end of the power element to prevent debris from entering the body of the...
US20130180272 EXPANSION-VALVE CONTROL DEVICE, HEAT-SOURCE UNIT, AND EXPANSION-VALVE CONTROL METHOD  
The degree-of-opening of an expansion valve is set to an appropriate degree-of-opening regardless of the load and external conditions for a heat-source unit. In a turbo refrigerator including a...
US20130074536 Thermostatic Expansion Device And Air Conditioning Loop Comprising Such A Thermostatic Expansion Device  
The subject of the invention is a device (5) for expanding a refrigerant fluid comprising, on the one hand, a first inlet (8) of the expansion device and a first outlet (9) of the expansion device...
US20140116075 METHOD FOR CONTROLLING OPERATION OF A VAPOUR COMPRESSION SYSTEM IN A SUBCRITICAL AND A SUPERCRITICAL MODE  
A method for controlling operation of a vapour compression system (1), and a vapour compression system (1) are disclosed. The vapour compression system (1) comprises a compressor (2), a heat...
US20130283836 EXPANSION VALVE AND VIBRATION-PROOF SPRING  
An expansion valve includes a shaft for transmitting the drive force to a valve element and a vibration-proof spring, set between the body and the shaft, which generates the sliding friction by...
US20110162400 Modular Evaporator and Thermal Energy Storage System for Chillers  
A modular evaporator which can be assembled from a number of standard modules is provided. Depending on the requirements, the modular evaporator can be assembled to meet a wide range of design...
US20100024455 DYNAMIC SUPERHEAT CONTROL FOR HIGH EFFICIENCY REFRIGERATION SYSTEM  
A vapor compression refrigeration system including components capable of determining the superheat at a compressor inlet is provided. The vapor compression refrigeration system may include sensors...
US20150013368 EXPANSION VALVE  
A temperature sensitive rod is communicated with a diaphragm that is displaceable in response to a pressure difference between an internal pressure of a sealed space, in which a temperature...
US20100192607 AIR CONDITIONER/HEAT PUMP WITH INJECTION CIRCUIT AND AUTOMATIC CONTROL THEREOF  
Heating equipment, including a first heat exchanger, a compressor, a second heat exchanger, and a first expansion valve that decompresses a refrigerant flowing from the second heat exchanger to...
US20100180612 REFRIGERATION DEVICE  
A refrigeration device includes a compression mechanism, a radiator, a first expansion mechanism, a second expansion mechanism, an evaporator, a first internal heat exchanger, a branch pipe, a...
US20090013700 Refrigerating air conditioning system, method of controlling operation of refrigerating air conditioning system, and method of controlling amount of refrigerant in refrigerating air conditioning system  
In a refrigerating air conditioning system using refrigerant such as CO2 used in a supercritical area, a highly efficient refrigerating air conditioning system is provided by adjusting the amount...
US20150176848 AIR CONDITIONING SYSTEM AND METHOD OF CONTROLLING AN AIR CONDITIONING SYSTEM  
An air conditioning system and a method of controlling an air conditioner system are provided. The air conditioning system may include an outdoor device disposed in an outdoor space, the outdoor...
US20070289322 Air handler unit fan installation and control method  
A method is provided including installing a variable frequency drive unit to drive a previously non-variable air handler fan of an HVAC system. The method includes setting a control strategy for...
US20080229770 Air conditioning system provided with an electronic expansion valve  
The present invention relates to an air conditioning device, in particular for motor vehicle, including an air-conditioning circuit comprising a compressor (14), a condenser (11), and/or an...
US20080216500 SYSTEM AND METHOD FOR CONTROLLING AN AIR CONDITIONER OR HEAT PUMP  
A control procedure operates an expansion valve of an air conditioning system. The control procedure utilizes a first control procedure to bring a calculated superheat value within a range of a...
US20090090118 VARIABLE SPEED COMPRESSOR PROTECTION SYSTEM AND METHOD  
A system and method for a compressor may include an inverter drive connected to the compressor that receives electric power and modulates a speed of the compressor by modulating a frequency of the...
US20090031740 Expansion valve control system and method for air conditioning apparatus  
A vapor compression air conditioning system includes a motor operated expansion valve and control unit including sensors for determining the amount of superheat of the working fluid at or adjacent...
US20080307805 Dual Temperature Refrigeration Circuit  
Combined medium and low temperature refrigeration circuit for circulating a refrigerant in a predetermined flow direction includes, in flow direction, a heat-rejecting heat exchanger, a medium...
US20140013780 CONDENSING UNIT HAVING FLUID INJECTION  
A climate control system is provided and may include a compressor, a first heat exchanger in fluid communication with the compressor, a second heat exchanger in fluid communication with the...
US20130174591 SUPERHEAT CONTROL FOR A REFRIGERANT VAPOR COMPRESSION SYSTEM  
A refrigerant vapor compression system includes a compressor, an expansion valve, a compressor speed sensor operatively connected to the compressor, an ambient temperature sensor, and a controller...
US20150247660 HEAT PUMP APPARATUS  
An apparatus includes a refrigerant circuit in which a compressor that compresses a refrigerant, an indoor-side heat exchanger serving as a radiator that exchanges heat between the refrigerant and...
US20060162358 Superheat control by pressure ratio  
A control method regulates an electronic expansion valve of a chiller to maintain the refrigerant leaving a DX evaporator at a desired or target superheat that is minimally above saturation. The...
US20130091874 Variable Refrigerant Flow Cooling System  
A variable flow refrigerant system having a compressor and one or a plurality of evaporators. The suction at one or the plurality of evaporators for the input to the compressor is monitored and...
US20150219379 TRANSCRITICAL REFRIGERANT VAPOR COMPRESSION SYSTEM HIGH SIDE PRESSURE CONTROL  
Operation of a transcritical refrigerant vapor compression system is controlled, when operating in a high capacity mode, through control of the refrigerant pressure in the refrigerant heat...
US20100031681 ELECTRONIC BLOCK VALVE  
An electrically controlled expansion valve package (10) comprises an expansion valve (30), sensors (32, 33, 36) and control electronics (35) all included in a monolithic package that greatly...
US20140377102 COMPRESSOR ASSEMBLY HAVING ELECTRONICS COOLING SYSTEM AND METHOD  
A system, compressor, and method that cools an electronics module with a low-pressure refrigerant. The system, compressor, and method utilize a temperature sensor that detects a temperature of the...
US20090133435 Refrigerating Air-Conditioning Apparatus  
A refrigerating air-conditioning apparatus, at least provided with no possibility that a foreign material returns to a compressor from an accumulator at a time of the pipeline-cleaning operation...
US20090095013 Ejector cycle system  
An ejector cycle system with a refrigerant cycle through which refrigerant flows includes an ejector disposed downstream of a radiator, a first evaporator located to evaporate refrigerant flowing...
US20100005819 REFRIGERATION APPARATUS  
A refrigeration apparatus (10) includes: a refrigerant circuit (20) provided with a variable-opening expansion valve (13); and a valve control means (33) for controlling the opening of the...
US20150198341 Air Conditioner  
It is an object to obtain an air conditioner capable of suppressing rise of compressor discharge temperature and individually controlling cooling capacity of a plurality of respective indoor...
US20150160664 EXPANSION VALVE  
An expansion valve according to an embodiment includes a power element, a metal seal part, and an elastic seal part. The power element has a housing, formed of a metal different from a kind of...
US20100242508 USE OF AN ADJUSTABLE EXPANSION VAVLE TO CONTROL DEHUMIDIFICATION  
A refrigerant system is provided with a control for its expansion device. The control operates the expansion device to adjust the superheat of the refrigerant leaving an evaporator to have desired...
US20090133416 REFRIGERATION DEVICE CONTROL SYSTEM  
A refrigeration device includes a control device and a multiple cooling elements. A supply header delivers refrigerant to the cooling elements and a return header returns refrigerant from the...
US20080314055 Refrigerant System Unloading By-Pass Into Evaporator Inlet  
A refrigerant system has at least one unloader valve selectively communicating refrigerant between the compressor compression chambers and a point upstream of the evaporator. When the compressor...
US20090241571 Temperature sensing tube for expansion valve  
To provide a temperature sensing tube for an expansion valve in which a hunting can be prevented by slowing of a temperature reaction rate of an expansion valve, a ceramic sintered member serving...
US20110023513 EXPANSION VALVE FOR A REFRIGERANT SYSTEM  
A refrigerant expansion valve for a refrigerant system includes a main body, a motor and first and second members. The main body has a refrigerant flow passage that extends therethrough. The first...
US20150027149 ELECTRIC EXPANSION VALVE CONTROL FOR A REFRIGERATION SYSTEM  
A refrigeration system including a condenser having a condenser inlet and a condenser outlet, a compressor fluidly connected to the condenser inlet, and an evaporator including an evaporator inlet...
US20070175229 Method for controlling a pulsed expansion valve  
A method of controlling the duty cycle of a pulse width modulated expansion valve in order to achieve low and stable evaporator superheat is disclosed. Duty cycle is incremented/decremented if...
US20050274133 Refrigeration plant  
A refrigeration plant comprising a compressor having an inlet and an outlet, a condenser connected to the outlet of the compressor, an evaporator connected to the condenser and to the inlet of the...
US20130205815 METHOD FOR CONTROLLING A SUPPLY OF REFRIGERANT TO AN EVAPORATOR  
A method for controlling a supply of refrigerant to an evaporator (5) of a vapour compression system (1), such as a refrigeration system, an air condition system or a heat pump, is disclosed. The...
US20100198416 REFRIGERATION SYSTEM  
A degree-of-superheat control unit (44) is configured to adjust the degree of opening of an indoor expansion valve (26) based on a control gain for determining an opening-degree adjustment amount...
US20090090117 SYSTEM AND METHOD FOR MONITORING OVERHEAT OF A COMPRESSOR  
A system and method for monitoring an overheat condition of a compressor is provided. A compressor connected to an evaporator. A suction sensor outputs a suction signal corresponding to a...
US20100205988 Condensing Unit Having Fluid Injection  
A climate control system is provided and may include a compressor, a first heat exchanger in fluid communication with the compressor, a second heat exchanger in fluid communication with the...
US20090071177 Refrigerant Air Conditioner  
A sufficient heating capacity can be displayed even in cold districts with atmospheric temperatures of −10° C. or less by improving the heating capacity in the refrigerant air conditioner much...
US20080282717 Expansion Valve and Refrigeration Device  
An expansion valve includes a valve body 1. The valve body 1 includes a first throttle 5 and a second throttle 6 arranged downstream from the first throttle 5. The second throttle 6 includes an...
US20090019872 AIR CONDITIONING APPARATUS  
An air conditioning apparatus includes a refrigerant circuit and an operation control section. The operation control section is capable of performing a refrigeration cycle for causing an outdoor...
US20100011793 REFRIGERATION CONTROL SYSTEM  
A control apparatus and associated method for a refrigeration system are provided. The control apparatus includes sensors capable of detecting controlled refrigerator zone temperatures and...
US20150247661 AIR-CONDITIONING APPARATUS  
A controller performs medium pressure control that controls the opening degree of a second expansion device based on a deviation between a target value of medium pressure, and a detection result...
US20090241570 Refrigerant cycle system  
In a refrigerant cycle system, a compression mechanism of an electric compressor sucks and compresses refrigerant, and an electric motor that drives the compression mechanism is cooled by the...

Matches 1 - 50 out of 67 1 2 >