TH2495B - Electronic expansion valve control system of the cooling system - Google Patents

Abstract

The control system for the electronic expansion valve in the refrigeration system is revealed by the electronic expansion valve. It controls the refrigerant flow in steps between the condenser and the evaporator of the cooling system. The electronic expansion valve is operated by a digitally controlled motor that adjusts the position in steps of the expansion valve in response to a digital electronic control signal sent to the engine. From the microcomputer control system, the microcomputer control system transmits electronic digital control signals to the engine in a predetermined manner in response to the measured operating conditions of the cooling system. Optimally, the electronic valve assembly is regulated to respond to the critical heat of the refrigerant in the vapor state which flows from the evaporator to the refrigeration compressor.

Claims (7)

1.Control system for the vapor pressure cooling system that consists of a pressure compressor. Condensers and evaporators, which the control system includes - an expansion valve connected between the condenser and the evaporator. To control the flow of the refrigerant between the condenser and the evaporator. Depending on the operating conditions of the extender unit - a digitally controlled electric motor connected to the extender unit in order to stepwise the operating position of the extender unit in response to the Digital Electronic Control Signal - Microcomputer control device for processing the electrical input signal according to a programmed process. And to produce digital electronic control signals as a feedback response to the transmitted electrical signals that have been converted - a device that is a medium for the delivery of digital electronic signals produced by the device. Microcomputer controls digitally controllable electrical and measuring devices. Which is connected electrically to the microcomputer control device To measure the position or operating conditions at least one point of the cooling system. And to transmit the electrical input signal to the microcomputer control device, which is a function of the measured operating condition. 2. Control systems for refrigeration systems that use pressurization of the vapor. According to claim 1, the digitally controlled electric motor is an accelerated motor. 3.Control systems for refrigeration systems that use pressurization of the vapor. According to claim No. 1, which consists of a microcomputer control device - a microcomputer to receive the electrical input signal from the measuring device. And serves to process the electrical input signal according to the pre-programmed process It also produces a control signal as a response to the converted electrical signal - the electric power source and - the electronic switch unit. Which is electrically connected to the microcomputer in order to receive the control signal produced by the microcomputer It is electrically connected between the electric power source and the conductive device to transmit the digital electronic control signal from the electric power source through the medium to the controllable electric motor. Digitally responds to the control signal received from the machine. Microcomputer 4.Control systems for refrigeration systems that use pressurization of the vapor. According to claim No. 1, the measuring device consists of - a device that is sensitive and durable, indicating a temperature to transmit electrical input to the microcomputer control device. Which is a function of the refrigerant vapor in the vapor flow from the evaporator to the pressure 5. Control systems for refrigeration systems that use pressurization of the vapor. According to claim No. 4, the temperature-sensitive and temperature-resistant device consists of - the first thermistor set through the evaporator outlet port. To measure the temperature of the refrigerant in the vapor state Which flows from the evaporator to the pressure compressor and - a second thermistor located through the inlet flow into the evaporator. To measure the saturation temperature of the refrigerant inside the evaporator. 6. A method of controlling the flow of refrigerant within the refrigeration system from the condenser to the evaporator via a digitally controlled electronic expansion valve assembly, which includes the procedure of - measuring operating conditions. At least one location of the cooling system - generating electrical signals. Which is a function of measurable operating conditions - processing of electrical signals produced by using a microcomputer control device based on a preprogrammed process to produce digital electronic control signals and - A digitally delivered electronic control signal to a digitally controlled electronic throttle set in order to stepwise adjust the flow to the cooling object passing through the valve assembly as React to digital electronic control signals 7. Process of refrigerant flow control in the refrigeration system according to claim No. 6, the measurement procedure consists of - measurement of refrigerant vapor. Which flows from the evaporator to the pressure