Whirlpool S.a.

Empresa Brasileira De Compressores S.a. - Embraco

Whirlpool Corporation

Embraco-industria De Compressores E Solucoes Em Refrigeracao, Ltda.

Marcio Roberto Thiessen

Paulo Sergio Dainez

Marcos Guilherme Schwarz

Steven John Kuehl

Guolian Wu

Nihat O Cur

Dietmar Erich Bernhard Lilie

Fabio Henrique Klein

Paulo Sérgio Dainez

Dietmar Erich Bernhard Lillie

Lucas Becker

Daniel Hense

A control method and a control system for a compressor in a refrigeration system, implements control logic based on the monitoring of parameters of the refrigeration system, where these parameters may include, for example, a previous load (C), a current load (C), a reference load (C), a measured cycle time (t) and a target time (t).

Control method and system in a refrigeration system and compressor of a refrigeration system

A linear motor (), a linear compressor (), a method of controlling a linear compressor (), a cooling system () and a system of controlling a linear compressor () to operate a linear compressor () in resonance in it's the greatest possible efficiency throughout its operation are described. One of the ways of achieving these objectives is by means of a linear compressor () applicable to a cooling system (), the linear compressor () comprising a piston () driven by a linear motor (), the piston () having displacement range controlled by means of a controlled voltage (V), the controlled voltage (V) having a voltage frequency (&#x3c6;) applied to the linear motor () and adjusted by a processing unit (), the range of piston () displacement being dynamically controlled in function of a variable demand of the cooling system (), the linear compressor () having a resonance frequency, the processing unit () adjusting the range of piston () displacement, so that the linear compressor () will be dynamically kept on resonance throughout the variations in demand of the cooling system ().

Linear motor, a linear compressor, a method of controlling a linear compressor, a cooling system, and a linear compressor controlling a system

The present invention relates to a flow rate control system in refrigeration circuits, to a method for controlling a refrigeration system and to a refrigeration system properly speaking, which may include, for example, from a domestic refrigerator to an air conditioning system. In particular, the present invention is directed to a solution for the loss of efficiency in the expansion valve (), when the system load varies, making the expansion valve () operate below its nominal capacity and, therefore, at low efficiency. One of the ways to achieve the objectives of the present invention is through a flow rate control system in refrigeration circuits comprising a hermetic compressor fluidly connected to a closed circuit (). The closed circuit () comprising a condenser (), an evaporator () and a fluid expansion device (), the closed circuit () being filled with a fluid, the fluid expansion device () having a nominal expansion capacity and being positioned between the evaporator () and the condenser (), the hermetic compressor () promoting a fluid flow inside the closed circuit (), the closed circuit () having a circuit nominal flow rate capacity. In addition, the system comprises a flow control valve () which is positioned between an outlet of the condenser () and an inlet of the fluid expansion device (), the flow control valve () being modulated so that the fluid passing through the fluid expansion device () is always at nominal expansion capacity. A method for controlling a refrigeration system is also disclosed.

Flow rate control system in refrigeration circuits, method for controlling a refrigeration system and a refrigeration system

A linear compressor control system includes an electronic circuit controlling an electric motor that drive a piston of the compressor, such that the motor is operated intermittently with an on-time (t) and an off-time (t) to keep the compression capacity of the compressor substantially constant. The compressor is associated with a closed cooling circuit having an evaporator and a condenser. The off-time (t) is shorter than the time necessary for the evaporation pressure (P) in the evaporator and the condensation pressure (Pc) in the condenser to equalize each other after the compressor has been turned off.

Linear-compressor control system, a method of controlling a linear compressor and a linear compressor

A variable refrigeration system including a cooling system having a compressor, a condenser, and a refrigerant. An active insulation system includes an insulation portion disposed therein that holds a gas. The insulation portion is operably connected to the compressor and includes an insulation panel adjacent a refrigerated compartment. A controller is operably connected to the cooling system and to the active insulation system. The controller operates between a first stage, wherein the controller sends a signal to the compressor to compress the refrigerant in the cooling system, and a second stage, wherein the controller sends a signal to the compressor to alter the gas content in the insulation portion of the active insulation system.

Minimized insulation thickness between high and low sides of cooling module set utilizing gas filled insulation panels

A cooling system for cooling an ambient to be cooled, a cooler and a method of controlling a cooling control system are described. The cooling control system comprises a variable capacity compressor and a controller, the controller measuring the load of the compressor by means of the measurement of the electric current and verifying the temperature condition in the cooler ambient and actuating on the cooling capacity of the compressor, the compressor being controlled to actuate in cycles, the cooling capacity being altered in function of an evolution of the load of the compressor along the cooling cycles in combination with an evolution of the temperature condition in the cooled ambient.

Cooling control system for an ambient to be cooled, a method of controlling a cooling system, and a cooler

A cooling system comprising a compressor () and controlled by means of an electronic circuit (TE), the electronic circuit (TE) comprising a measuring circuit (ME) for measuring an electric power (Pn) supplied to the compressor () a microcontroller (), a time variable (td), the measuring circuit (ME) effecting a measurement of the electric power (Pn) supplied the compressor (), the microcontroller () comparing the measure. An electric power with reference-power values (Prl) and (Prd) previously stored in the microcontroller (), the microcontroller altering the state of operation of the compressor () in function of the electric power (Pn) and of the time variable (td). A method of controlling a compressor (), which comprises steps of storing a variable (Pn(te)) at a power value (Pn) measured at the moment when a period of time (te) counted from the moment of turning on the compressor () has been, and altering the value of the time variable (tD).

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Marcio Roberto Thiessen