TH33200A - Air conditioner - Google Patents

Abstract

DC60 (13/10/40) To obtain an air conditioner capable of operating with various a-c source voltages and achieving a high power factor by reducing high harmonic generation, the a-c source voltage from power source a-c 1 is fully rectified by rectifier 2, and the d-c source voltage Ed of the inverter 13 is obtained by charging in capacitor 5. Here, there are a-c source voltages of 100V and 200V, and the divided voltage Ed1 of the d-c voltage of capacitor 5 is selected when the a-c source voltage is 100V. The divided voltage Ed2 (here Ed1>Ed2) of the d-c voltage of capacitor 5 is selected when the a-c source voltage is 200V, respectively, by switchgear 18, and is used as the d-c voltage Ed' for switching on. And the closing of switch device 6, even though the d-c source voltage Ed will differ according to the a-c source voltage of 100V or 200V, it will be possible to set the d-c source voltage Ed at a voltage value for the operation of the inverter 13 with low loss and high efficiency for each of the a-c source voltages by setting the appropriate voltage division ratio.

Claims (25)

OCR 09WP 1. The air conditioning system consists of: a rectifier for rectification and output of the input voltage a-c; a reactor; an output device for voltage stabilization to switch the rectified output of the rectifier on and off via the reactor; a smoothing capacitor for generating 4-6 volts by smoothing the rectified output, which is switched on and off by the voltage stabilization switching device and transmitted through a diode; a coupled converter for driving the electric motor with an output voltage provided by the switching of the input voltage de, which is output by the smoothing capacitor; a room temperature sensor for measuring room temperature; and a control section for controlling the switching of the device based on the temperature difference between the room temperature measured by the room temperature sensor and the set room temperature, in order to control the number of rotations of the electric motor. In the high rotational speed region, within the low rotational speed region, the control section regulates the input voltage of the coupled converter to a voltage magnitude corresponding to the number of rotations by controlling the voltage stabilization switching device and drives the electric motor with the supplied output voltage without switching between conduction periods. The switch device of the binding converter. 2. The air conditioning system as defined in Recourse 1 in the high-rotation area, within the high-rotation area of the electric motor, the control unit regulates the input voltage of the inverting converter to a specified voltage magnitude by controlling the switching device for voltage stabilization and drives the electric motor with the output voltage provided by switching the current between the conduction periods of the converter's switching device. 3. The AC system consists of: a power converter containing: a rectifier for rectifying the input a-c voltage; a reactor; a switching device for voltage stabilization to open and close the rectified output of the rectifier via a diode; a smoothing capacitor for generating a d-c voltage by smoothing the rectified output, which is opened and closed by the voltage setting switching device and supplied via a diode; and a control section for controlling the switching rate of the opening and closing of the voltage stabilization switching device; and a coupling converter for inverting the d-c voltage generated by the smoothing capacitor to an a-c voltage by opening and closing the switching device and for driving an electric motor. The control section contains: a voltage control section for outputting a voltage control signal based on the difference between the DC voltage generated and output by the smoothing capacitor and the set relative voltage; and a current coupling calculation section for generating and outputting a current coupling signal by multiplying the coupling signal that is coupled with the rectified output of the rectifier and the voltage control signal. The current comparison section calculates the modulation comparison signal for generating and outputting by calculating the modulation comparison signal and the 4-6 current at the rectifier output; and the comparison section for outputting the drive signal compares the modulation comparison signal and the carrier signal output from the signal oscillator. This is followed by: a section for controlling the motor's rotational speed by setting a constant voltage determined by comparing the d-c voltage generated by the voltage smoothing capacitor, and by switching the inverting converter's switching device on and off at a specified switching current when the switching current of the inverting converter's switching device is less than 100%; and for delivering the trigger voltage determined by changing the d-c voltage section, and for comparing the voltage when the switching current is 100%. The motor's rotational speed is controlled by changing the trigger voltage according to the desired motor rotational speed, driving the switching device for switching the voltage constant on and off, and controlling the magnitude of the d-c voltage. 4. The air conditioner, as defined in Claim 3, is subsequently included with a section for the output of the drive control signal of the switching device for voltage stabilization and the single-way bound converter, and for the output of the control voltage to change the d-c voltage generated by the capacitor | for smoothing when the switching current rate of the invert converter switching device is 100%, and for changing the switching current rate of the invert converter switching device when the switching current rate of the bound converter switching device is less than 100%. In each case, for the exchangeable output, the specified voltage for driving the bound converter at a switching current rate of 100% or the single-way bound converter drive control signal. 5. The air conditioning system consists of: a power converter containing: a rectifier for rectifying the a-c input voltage; a reactor; a voltage stabilization device for switching the rectified output of the rectifier on and off via the reactor; a smoothing capacitor for generating the d-c voltage by smoothing the rectified output, which is switched on and off by the voltage stabilization switching device and supplied through a diode; and a control section for controlling the switching rate of the switching device on and off; and a coupling converter for inverting the d-c voltage generated by the smoothing capacitor to an a-c voltage by switching the device on and off, and for driving an electric motor; where the control section contains: a voltage control section for outputting a voltage control signal based on the difference between the d-c voltage generated and output by the smoothing capacitor and the set reference voltage; and a current coupling calculation section for generating and outputting a current coupling signal by multiplying the coupling signal that is coupled with the rectified output of the rectifier. The control current and voltage signals are managed by: a current comparison section for generating and outputting modulation signals by calculating the modulation signal and the d-c current at the rectifier output; a comparison section for outputting the drive signal by comparing the modulation signal and the carrier signal output from the signal oscillator; a decision section for detecting voltages 4-6 generated in the smoothing capacitor and deciding on one of the voltage types V1, V2, Vn where the input a-c voltage is present; a section for switching the voltage control signal and the coupling signal according to the voltage type of the input a-c voltage; and a section for controlling the number of rotations of the electric motor by setting a defined constant by comparing the voltages 4-6 generated by the smoothing capacitor with the modulation signal and by opening and closing the switching device of the coupling converter at a specified current switching rate. The switching current ratio for opening and closing the switching device of the inverting converter is less than 100%, and for transmitting a command voltage determined by changing the d-c voltage portion, and for comparing it to the relative voltage when the switching current ratio is 100%, in such a way that the number of rotations of the electric motor is controlled by changing the command voltage according to the desired number of rotations of the electric motor, driving the switching device for opening and closing the voltage hold, and controlling the magnitude of the d-c voltage to be more or less. 6. The air conditioner, as defined in Claim 5, the number of rotations of the electric motor is controlled by setting the 4-6 constant voltage at a specified value, by comparing the specified relative voltage and the d-c voltage generated by the condenser for smoothing, and by opening and closing the switching device of the inverter when the input a-c voltage is within the specified range of voltage types V1, V2, __, __, Vn. 7. The air conditioning units as specified in claim 5, the switching devices for voltage stabilization and the control units for power converter generation shall be provided on the same base. 8. The air conditioner as specified in claim 5 on the said base shall be installed as follows: a voltage stabilization switching device and a control section for generating the power converter: a section for switching the voltage control signal according to one of the voltage types V1, V2, Vn in which the input voltage a-c is present; a section for exchanging between the constant voltage specified for driving the invert converter at a 100% switching rate and the signal for driving the switching device of the invert converter on and off; and a section for exchanging the d-c voltage supplied to the voltage control section between the driving signal of the voltage stabilization switching device and a signal proportional to the d-c voltage which will be generated by the smoothing capacitor. 9. The air conditioning unit consists of: a power converter containing: a rectifier for rectifying the input a-c voltage; a reactor; a switching device for voltage stabilization to open and close the rectified output of the rectifier through the reactor; a smoothing capacitor for generating a d-c voltage by smoothing the rectified output, which is opened and closed by the switching device for voltage stabilization and transmitted through a diode; a control section for controlling the current switching rate of the opening and closing of the switching device for voltage stabilization; and an inverse converter for inverting the d-c voltage generated by the smoothing capacitor to an a-c voltage by the opening and closing of the switching device and for driving an electric motor; where the control section consists of: a voltage control section for outputting a voltage control signal based on the difference between the d-c voltage generated and output by the smoothing capacitor and the set reference voltage; and a current conversion section for generating and outputting a current conversion signal by multiplying the matching signal that is matched to the rectified output of the rectifier. Current and voltage control signals; current comparison calculation for generating and outputting modulation signals by calculating the current comparison signal and the 4-6 current at the rectifier output; comparison for outputting the drive signal by comparing the modulation signal and the carrier signal sent from the signal oscillator; and a 4-c power source such as a battery or solar power, where the voltage holding switch is driven on and off, and subsequently assembled with: an input current sensing section for detecting the incoming a-c current, where the control section controls the number of rotations of the electric motor by controlling the magnitude of the DC voltage by driving the on and off of the voltage holding switch according to the magnitude of the incoming a-c current. 10. Air conditioning as defined in claim 9, the AC power source, i.e. battery or solar power, is connected to a capacitor for smoothing through a diode, and the number of rotations of the electric motor is controlled by switching the switching device of the coupled converter on and off when the output voltage of the 4-6 power source reaches the desired 4-6 voltage. 11. Air conditioners as defined in Claim 9, the d-c power source is a solar battery connected to a reactor on the power source side. 12. The air conditioner as defined in claim 9, the 4-c power source is a battery. The photovoltaic power is connected between the collector and emitter terminals of the switching device for maintaining the voltage through the diode and reactor. 13. The air conditioning system consists of: a power converter containing: a rectifier for rectifying the A-C input current to the reactor; a switching device for stabilizing the voltage for opening and closing the rectified output of the rectifier through the reactor; a smoothing capacitor for generating a 4-6V voltage by smoothing the rectified output, which is opened and closed by the switching device for stabilizing the voltage and passed through a diode; and a control section for controlling the switching rate of the opening and closing of the switching device for stabilizing the voltage. The inverse converter converts the DC voltage generated by the smoothing capacitor to an A-C voltage by opening and closing the switching device and for driving an electric motor. It is further comprised of: an input current sensing section for detecting the A-C input current, where the control section stops the driving of the switching device for stabilizing the voltage when the detected output of the input current sensing section is less than a set value; and a control section for controlling the number of rotations of the electric motor by setting a defined constant. By comparing the 4-6 voltage generated by the smoothing capacitor with the relative voltage, and by switching the switching device of the inverting converter at a specified current switching rate, when the current switching rate of the switching device of the inverting converter is less than 100%, and for the input voltage determined by changing the d-c voltage portion, and for comparing it with the relative voltage when the current switching rate is 100%, where the number of rotations of the electric motor is controlled by changing the command voltage according to the desired number of rotations of the electric motor and controlling the magnitude of the d-c voltage. 14. The air conditioner as defined in claim 13 shall subsequently include a section for the output of the drive control signal of the switching device for voltage stabilization and the single-way inverting converter, and for the output of the command voltage to change the 4-6 voltages generated by the smoothing condenser when the switching rate of the inverting converter switching device is 100%, and for changing the switching rate of the inverting converter switching device when the switching rate of the inverting converter switching device is less than 100%, in each case for the exchangeable output of the specified voltage for driving the inverting converter at a switching rate of 100% or the drive control signal of the single-way inverting converter. 15. The air conditioner as defined in claim 13 is subsequently assembled with a condenser for smoothing and determining one of the voltage types V1, V2, Vn, in which the input voltage a-c is present; a section for changing the voltage control signal and the conformation signal according to the voltage type which is of the input voltage 3-6. 16. The air conditioning unit consists of: a power converter containing: a first rectifier for rectifying the 3-6 input voltage from the a-c power source; a switching device for voltage stabilization for opening and closing the rectified output of the rectifier via a diode; a first smoothing capacitor for generating the d-c voltage by smoothing the rectified output, which is opened and closed by the voltage stabilization switching device and passed through a diode; and a control section for controlling the switching rate of opening and closing the voltage stabilization switching device. A second inverse converter is used to convert the d-c voltage generated by the first smoothing capacitor to a 2-0 voltage by opening and closing the switching device and for driving an electric motor. This is further comprised of: a judgment section for detecting the d-c voltage generated and output by the first smoothing capacitor and judging the magnitude of the input a-c voltage; and a driver section for creating a differential drive to open and close the switching device. The voltage is maintained according to the decision of the first section: a movable contact is placed between the 2-0 power source and the rectifier, and the discharge section discharges the charged voltage of the first smoothing capacitor. The control section discharges the charged voltage of the first smoothing capacitor through the discharge section until the charged voltage of the first smoothing capacitor is less than the set voltage by making the movable contact non-conductive before the decision of the magnitude of the input voltage a-6 is performed by the decision section. After that, the first smoothing capacitor is charged with the rectified output of the first rectifier, and the decision section determines the magnitude of the input ac voltage by detecting the d-c voltage, which is generated and delivered from the smoothing capacitor in increments of full charge. 17. The air conditioner, as defined in claim 16, the binding converter shall be used as a discharge component, and the accumulated electrical charge of the condenser for smoothing shall be discharged through the binding converter and the electric motor by driving the switching on and off of the binding converter at a specified switching current rate. 18. The air conditioner as defined in claim 16 is subsequently equipped with a DC power source for the operation of the control circuit, where the DC power source comprises: a second rectifier for rectifying the 2-0 input voltage and which can be selected in different constructs between a voltage-multiplier rectifier and a full-wave rectifier; a second smoothing capacitor for smoothing the output rectified from the second rectifier and for generating and outputting the second 4-6 voltage; and a transformer circuit for converting the second 4-6 voltage to several specified voltage types, where the selection in the construct of the second rectifier to be either a voltage-multiplier rectifier or a full-wave rectifier is made according to the decision of the decision section. 19. An air conditioning system consists of: a compressor for compressing the refrigerant; an internal heat exchanger into which the refrigerant flows from the compressor; an auxiliary internal heat exchanger placed on the downflow side of the internal heat exchanger to assist in the refrigerant flow under heating action; an electric motor for driving the compressor; and an electric motor driver for supplying the A-C voltage to the electric motor. The electric motor driver consists of: a power converter with a rectifier for rectifying the input A-C voltage and a first switch for opening and closing the rectified output of the rectifier to control the voltage; a coupling converter for transmitting the controlled input and output voltage and a second switch for converting the input voltage to the A-C voltage by switching the current to drive the electric motor with the A-C voltage; and a control unit for creating control of the conduction rate in opening and closing the first switch, controlling the switching current of the second switch, and controlling the switching circuit of the switching current. The control unit consists of: a section for maintaining a constant output voltage by controlling the conduction rate in opening and closing the first switch. And driving the electric motor with the output voltage obtained by a switching circuit that controls the switching current of the second switching device if the number of rotations of the electric motor is less than the specified number of rotations, and for increasing the conduction rate of opening and closing of the first switching device to be higher than the conduction rate when the output voltage is maintained constant, and driving the electric motor with the correct output voltage without a switching circuit that controls the switching current of the second switching device if the number of rotations of the electric motor exceeds the specified number of rotations. 20. The air conditioner, as defined in claim 19, the auxiliary internal heat exchanger shall be empty through a gap of 1mm and 5mm from the internal heat exchanger. 21. The air conditioner, as defined in claim 19, the power converter has a smoothing section for the d-c voltage output by smoothing the rectified output, which is controlled in voltage by opening and closing the rectified output from the rectifier by the first switching device of the power converter through the reactor, and the 4-6 voltage generated by the smoothing section is output to the second switching device of the inverting converter. 22. The air conditioning system consists of: an electric motor for driving the compressor and an electric motor driver for supplying a 2-0 voltage to the electric motor for driving it. The electric motor driver consists of: a power converter with a rectifier for rectifying the 2-0 input voltage and a first switch for opening and closing the rectified output of the rectifier to control the voltage; an inverting converter for transmitting the controlled input voltage and a second switch for exchanging the input voltage to an a-c voltage by switching the current to drive the electric motor with an a-c voltage; and a control section for creating control of the conduction rate in opening and closing the first switch, controlling the switching current of the second switch, and controlling the switching circuit of the switching current. The control section consists of: a section for driving the electric motor with the output voltage obtained by the switching circuit that controls the switching current of the second switch if the number of revolutions per minute of the electric motor is less than the specified number of revolutions per minute; and a section for driving the electric motor with the output voltage obtained by controlling the conduction rate of the switching current. The opening and closing of the first switching device matches the number of rotations of the electric motor and the 100% conductivity of the current switching cycle of the second switching device. If the number of rotations of the electric motor exceeds the specified number of rotations, the device will shut off. 23. The air conditioning system consists of: a power converter with a rectifier for rectifying the input arc voltage and a first switching device for opening and closing the rectified output of the rectifier to control the voltage; an inverse converter for transmitting a controlled input voltage and a second switching device for exchanging the input voltage to AC voltage by switching the current to drive the electric motor with an AC voltage; and a control section for establishing control of the conduction rate of opening and closing of the first switching device, controlling the switching current of the second switching device, and controlling the switching circuit of the switching current. The control section comprises: a section for maintaining a constant output voltage by controlling the conduction rate of opening and closing of the first switching device and driving the electric motor with the output voltage obtained by the switching circuit that controls the switching current of the second switching device if the number of rotations of the electric motor is less than the specified number of rotations; and a section for increasing the conduction rate of opening and closing of the first switching device to a level higher than the conduction rate when the output voltage is maintained and driving the electric motor with the correct output voltage. Without a switching circuit controlling the switching current of the second switching device, the electric motor will shut off if the number of rotations exceeds a predetermined number. 24. As specified in clause 23, the power converter has a smoothing section for output voltages 4-6 by smoothing the rectified output, which is controlled in voltage by opening and closing the rectified output from the rectifier with the first switching device of the power converter through the reactor, and the d-c voltage generated by the smoothing section is sent to the second switching device of the coupling converter. 25. The air conditioning system consists of: a power converter with a rectifier for rectifying the input a-c voltage and a first switching device for opening and closing the rectified output of the rectifier to control the voltage; a coupled converter for delivering the controlled input voltage and a second switching device for exchanging the input voltage to a 3-6 voltage by switching the current to drive the electric motor with the a-c voltage; and a control unit for creating control of the conduction rate in opening and closing the first switching device, and controlling the switching current. The control unit comprises a section for driving the electric motor with the output voltage obtained by the switching circuit that controls the switching current of the second switching device if the number of rotations of the electric motor is less than the specified number of rotations, and a section for driving the electric motor with the output voltage obtained by controlling the conduction rate of opening and closing of the first switching device that matches the number of rotations of the electric motor and with a conduction rate of 100% of the switching current circuit of the second switching device if the number of rotations of the electric motor exceeds the specified number of rotations.