HIGH-FREQUENCY CONTROL OF DEVICES INTERNAL TO A HERMETIC COMPRESSOR
First Claim
1. A system for transmitting control signals to internal devices of a compressor, wherein the compressor includes a housing, a sealed power terminal, and a motor for powering the compressor, the system comprising:
- a first signal converter disposed externally of the compressor housing, the first signal converter being configured to receive a control signal and convert the control signal to a modulated signal;
a second signal converter disposed internally of the compressor housing, the second signal converter being configured to decode the modulated signal;
a plurality of power transmission lines connected to an AC input power source, the plurality of power transmission lines also connected to the sealed power terminal;
wherein the first signal converter is electrically coupled to at least one power transmission line of the plurality of transmission lines to transmit the modulated signal to the second signal converter, and the second signal converter is coupled to the at least one power transmission line and configured to receive the modulated signal and to generate a driver signal in response to the modulated signal for operating at least one of the internal devices of the compressor.
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Accused Products
Abstract
A system for transmitting control signals to internal devices of a compressor is provided. The compressor includes a housing, a hermetic power terminal and a motor for powering the compressor. The system includes a frequency converter that is disposed externally of the compressor housing. The frequency converter converts a control signal to a high-frequency signal. A frequency decoder is disposed inside the compressor housing. The frequency decoder decodes and converts the high-frequency signal to a driver signal. 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. The frequency decoder generates a driver signal in response to the high frequency signal for operating at least one of the internal devices of the compressor.
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Citations
21 Claims
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1. A system for transmitting control signals to internal devices of a compressor, wherein the compressor includes a housing, a sealed power terminal, and a motor for powering the compressor, the system comprising:
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a first signal converter disposed externally of the compressor housing, the first signal converter being configured to receive a control signal and convert the control signal to a modulated signal; a second signal converter disposed internally of the compressor housing, the second signal converter being configured to decode the modulated signal; a plurality of power transmission lines connected to an AC input power source, the plurality of power transmission lines also connected to the sealed power terminal; wherein the first signal converter is electrically coupled to at least one power transmission line of the plurality of transmission lines to transmit the modulated signal to the second signal converter, and the second signal converter is coupled to the at least one power transmission line and configured to receive the modulated signal and to generate a driver signal in response to the modulated signal for operating at least one of the internal devices of the compressor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A refrigeration system comprising:
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a compressor, a condenser, and an evaporator connected in a closed refrigerant loop the compressor having a motor to power the compressor and wherein the compressor includes a housing and a hermetic power terminal; a frequency converter disposed externally of the compressor housing, the frequency converter configured to receive a control signal and convert the control signal to a high-frequency signal; a frequency decoder disposed internally of the compressor housing, the frequency decoder configured to decode the high-frequency signal and convert the high-frequency signal to a driver signal; and a plurality of power transmission lines connected to the hermetic power terminal; wherein the frequency converter is electrically coupled to at least one power transmission line of the plurality of transmission lines to transmit the high-frequency signal to the frequency decoder, and the frequency decoder is coupled to the at least one power transmission line and configured to receive the high-frequency signal and to generate a driver signal in response to the high-frequency signal for operating at least one of the internal devices of the compressor. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A method for controlling internal devices of a hermetic compressor wherein the compressor includes a housing, a hermetic power terminal and a motor for powering the compressor, the method comprising:
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receiving a control signal; converting the control signal to a high-frequency signal; transmitting the high-frequency signal on an AC input power line of the compressor; decoding the high-frequency signal; generating a driver signal in response to the decoded high-frequency signal; and controlling an internal device of the hermetic compressor using the generated driver signal.
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Specification