Air conditioner with solar generator

Claim 2

An air conditioner according to claim 1, further comprising an inverter section converting the elecric power generated at said power generating section into an AC power having the voltage and the frequency that can be jointed to the commercial AC power source, and outputting to the commercial AC power source the AC power whose voltage and frequency have been converted, wherein said display section further displaying the electric power generated by said power generating section and one of outputted current and outputted power outputted from said inverter section to the commercial power source.

Claim 3

A solar generator which collects sunlight by a solar cell of a power generating section, and converts direct current power generated by said power generating section into an alternating current power whose voltage and frequency corresponding to a commercial AC power source, and outputs the power whose voltage and frequency have been converted, comprising: an inverter section provided between the power generating section and an output of said solar generator to the commercial power source, and converting direct current power to alternating current power of a quasi-sinewave by operation of switching elements in accordance with predetermined switching signals, and outputting the alternating current power; a network power detecting section detecting variations in an instantaneous value of alternating current power of the commercial power source; and an inverter control section determining, from results of detection by said network power detecting section, a zero cross point at which the instantaneous value becomes zero, and outputting the switching signals so that a phase of the alternating current power of the quasi-sinewave coincides with a phase of the alternating current power of the commercial power source at a predetermined timing.

Claim 4

A unit for supplying power generated from solar energy to a commercial power source, for supplying to a commercial power source power generated by using sunlight as an energy source, comprising: a solar cell collecting sunlight; a power generating section for generating direct current power on the basis of light collected by said solar cell; an inverter section converting the direct current power generated at said power generating section into alternating current power; a transformer section which adjusts voltage of said alternating current power; a power source line electrically connecting a secondary side of said transformer section and a secondary side of a transformer at the commercial power source; a switch disposed on said power source line and able to electrically open and close a connection between said transformer section and the transformer at the commercial power source by predetermined signals; network determining means for determining parameter values of the commercial power source which include a frequency and a voltage; third-order harmonics detecting means, connected to the secondary side of the transformer at the commercial power source, for detecting third-order harmonics; first control means for controlling said inverter section and said transformer section on the basis of parameter values determined by said network determining means; and second control means for controlling said switch to electrically open the connection between said transformer section and the transformer at the commercial power source, in a case in which third-order harmonics are detected at said third-order harmonics detecting means.

Claim 5

An air conditioner having a refrigerating cycle which circulates refrigerant and includes a compressor, a condenser, a expansion device and an evaporator, and effecting heat exchange between the refrigerant and air supplied to an interior, and carrying out air conditioning operation of the interior by supplying air which has been subjected to heat exchange to the interior so that at least one of a temperature and a humidity of the interior becomes a desired state, said air conditioner equipped with a commercial power source supplying function generating power by using sunlight as an energy source and having a function for supplying generated power to a commercial power source, said air conditioner further comprising: a rectifier/smoothing section converting alternating current power supplied from the commercial power source into direct current power; an inverter section which allows direct current power obtained from said rectifier/smoothing section to pass through intermittently to the compressor in response to signals, so as to control a revolution of the compressor; a rotation controlling section outputting to said inverter section the signals for adjusting the revolution of the compressor so that at least one of the temperature and the humidity of the interior becomes a desired state; a power supplying section which merges the power generated by using sunlight as an energy source with direct current power outputted from said rectifier/smoothing section; and a control section which preferentially merges the power generated by using sunlight as an energy source with the direct current power outputted from said rectifier/smoothing section when said air conditioner is carrying out air conditioning operation, and which preferentially supplies to the commercial power source the power generated by using sunlight as an energy source when said air conditioner is not carrying out air conditioning operation.

Claim 6

An air conditioner according to claim 5, wherein said control section comprising: a first power detecting section which detects the power generated by using sunlight as an energy source; a second power detecting section which detects one of power consumed at said air conditioner and power consumed at the compressor; and a regulating section which, when a regulating function is effective, corrects the revolution of the compressor so that a value detected by said second power detecting section is less than or equal to a value detected by said first power detecting section.

Claim 7

An air conditioner according to claim 6, wherein a portion of said air conditioner effecting air conditioning operation and a portion of said air conditioner having the function for supplying to the commercial power source the power generated by using sunlight as an energy source are controlled by the same microprocessor.