SYSTEM AND METHOD FOR CONTROL OF DEVICES INTERNAL TO A HERMETIC COMPRESSOR
First Claim
1. A system for transmitting control signals to internal components of a compressor, wherein the compressor comprises a hermetically sealed housing and a motor positioned inside the hermetically sealed housing, the system comprising:
- a first signal converter located external to the hermetically sealed housing, the first signal converter being configured to receive a control signal and convert the control signal to an output signal;
a second signal converter located internal to the hermetically sealed housing, the second signal converter being configured to decode the output signal and generate a control signal for an internal component of the compressor;
a power terminal configured and positioned to provide a hermetically sealed electrical connection through the housing;
a plurality of power lines connectable to a power source to provide an operating voltage to the motor, the plurality of power lines connected to the power terminal external to the hermetically sealed housing;
a plurality of motor leads positioned inside the hermetically sealed housing, the plurality of motor leads connected to the power terminal at one end and to the motor at an opposite end;
the first signal converter is electrically coupled to at least one power line of the plurality of power lines to transmit the output signal through the at least one power line and the power terminal to the plurality of motor leads; and
the second signal converter is electrically coupled to at least one motor lead of the plurality of motor leads to receive the output signal and the at least one motor lead is connected to the power terminal at a location corresponding to the connection of the at least one power line of the plurality of power lines to the power terminal.
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Accused Products
Abstract
A system is provided for transmitting control signals to the internal devices of a compressor. The compressor includes a housing, a hermetic power terminal and a motor for powering the compressor. The system includes a frequency converter that is located external to the compressor housing and a frequency decoder that is positioned inside the compressor housing. The frequency converter can convert a control signal from a controller to a high frequency signal. The frequency decoder decodes and converts the high frequency signal to a control signal for an internal device of the compressor. An AC input power source provides electrical power to the motor, and power transmission lines connect the AC input power source to the hermetic power terminal. The frequency converter is electrically coupled to the frequency decoder by two power transmission lines.
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Citations
20 Claims
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1. A system for transmitting control signals to internal components of a compressor, wherein the compressor comprises a hermetically sealed housing and a motor positioned inside the hermetically sealed housing, the system comprising:
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a first signal converter located external to the hermetically sealed housing, the first signal converter being configured to receive a control signal and convert the control signal to an output signal; a second signal converter located internal to the hermetically sealed housing, the second signal converter being configured to decode the output signal and generate a control signal for an internal component of the compressor; a power terminal configured and positioned to provide a hermetically sealed electrical connection through the housing; a plurality of power lines connectable to a power source to provide an operating voltage to the motor, the plurality of power lines connected to the power terminal external to the hermetically sealed housing; a plurality of motor leads positioned inside the hermetically sealed housing, the plurality of motor leads connected to the power terminal at one end and to the motor at an opposite end; the first signal converter is electrically coupled to at least one power line of the plurality of power lines to transmit the output signal through the at least one power line and the power terminal to the plurality of motor leads; and the second signal converter is electrically coupled to at least one motor lead of the plurality of motor leads to receive the output signal and the at least one motor lead is connected to the power terminal at a location corresponding to the connection of the at least one power line of the plurality of power lines to the power terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system comprising:
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a compressor, the compressor comprising a hermetically sealed housing, a motor positioned in the hermetically sealed housing, and a hermetic power terminal configured and positioned to provide a sealed electrical connection through the hermetically sealed housing; a plurality of first power lines connectable to an AC power source at one end and connected to the hermetic power terminal at an opposite end, the AC power source being configured to provide a voltage greater than 100 volts; an encoder located external to the hermetically sealed housing, the encoder configured to receive a first signal and convert the first signal to a second signal, the encoder being connected to at least one first power line of the plurality of first power lines to transmit the second signal on the at least one first power line; a plurality of second power lines positioned inside the hermetically sealed housing, the plurality of second power lines connected to the hermetic power terminal; a decoder located internal to the hermetically sealed housing, the decoder being connected to at least one second power line of the plurality of second power lines to receive the second signal from the at least one second power line, the decoder configured to receive the second signal and generate a third signal from the second signal, the third signal corresponding to the first signal; a component located internal to the hermetically sealed housing and controlled by the third signal from the decoder; and the connection of the at least one first power line to the power terminal corresponds to the connection of the at least one second power line to the power terminal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for controlling an internal device of a hermetic compressor, wherein the compressor includes a housing, a hermetic power terminal providing an electric connection through the housing and a motor positioned in the housing, the method comprising:
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receiving a control signal for an internal device of a hermetic compressor; converting the control signal to an output signal at a location external to a housing of the hermetic compressor, the output signal having a frequency in the range between about 10 KHz and about 100 MHz; transmitting the output signal on an AC power line through a hermetic power terminal into the interior of the housing; receiving the output signal at a location internal to the housing; generating a driver signal based on the received output signal; and controlling the internal device of the hermetic compressor using the generated driver signal.
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Specification