Patent application number | Description | Published |
20100162742 | REFRIGERATION APPARATUS - An air conditioner ( | 07-01-2010 |
20110252818 | AIR CONDITIONING APPARATUS AND METHOD OF CONTROLLING THE AIR CONDITIONING APPARATUS - An air conditioning apparatus includes a refrigerant circuit, a refrigerant heating unit and a stop signal controller. The refrigerant circuit includes a compressor, an indoor heat exchanger, a pressure reducing mechanism, and an outdoor heat exchanger. The refrigerant heating unit heats refrigerant flowing through the refrigerant circuit. The stop signal controller, in a case of causing the compressor to stop at a time when the compressor and the refrigerant heating unit are both operating, executes first stop control in which a stop signal is issued in order to stop the refrigerant heating unit, and then a stop signal is issued in order to stop the compressor after elapse of a first amount of time. A method of controlling an air conditioning apparatus having the refrigerant circuit and the refrigerant heating unit includes executing the first stop control. | 10-20-2011 |
20110314851 | AIR CONDITIONER - An air conditioner includes a heat generating member, an electromagnetic induction heating unit, an air conditioning target space temperature detecting unit, an outdoor air temperature detecting unit, and a control unit. The heat generating member thermally contacts a refrigerant piping and/or refrigerant that flows through the refrigerant piping. The electromagnetic induction heating unit includes a magnetic field generating part that generating part generates a magnetic field in order to heat the heat generating member by induction heating. The control unit, when the refrigeration cycle is performing heating operation or defrosting operation, inhibits the generation of the magnetic field by the magnetic field generating part when the temperature of the space to be air conditioned and the outside air temperature do not satisfy a first prescribed condition or when a difference between a target set temperature and the temperature of the space does not satisfy a second prescribed condition. | 12-29-2011 |
20110314852 | AIR CONDITIONER - An air conditioner includes a refrigerant circuit, an electromagnetic induction heating unit, and a control unit. The refrigerant circuit has a compressing mechanism with an adjustable operating capacity, a heat source side heat exchanger, an expansion mechanism, and a utilization side heat exchanger. The electromagnetic induction heating unit heats a refrigerant piping and/or a member that is in thermal contact with a refrigerant that flows through the refrigerant piping. The control unit sets the electromagnetic induction heating unit to a forced inhibit state if any one of a condition in which the electromagnetic induction heating unit has been manually set to operation inhibited; a condition in which an air conditioning load is small; and a condition in which an amount of circulating refrigerant is small is satisfied. | 12-29-2011 |
20120000223 | AIR CONDITIONING APPARATUS - An air conditioning apparatus includes a refrigeration cycle, a magnetic field generator, a detector and a control part. The refrigeration cycle has a compression element, a refrigerant tube in thermal contact with a refrigerant flowing through the refrigerant tube and/or a heat-generating member in thermal contact with a refrigerant flowing through the refrigerant tube. The magnetic field generator generates a magnetic field to inductively heat the heat-generating member. The detector detects either temperature or temperature change or pressure or pressure change in refrigerant flowing through a predetermined portion of the refrigeration cycle. The control part permits magnetic field generation in a first compression element state and a higher output second compression element state, and when a magnetic-field-generating-permission condition is satisfied. The condition is either that a value detected by the detector change or that a change be detected in the value detected by the detector. | 01-05-2012 |
20120000225 | AIR CONDITIONER - An air conditioner includes a compressing element, a refrigerant cooler, an expansion element, a refrigerant heater, a magnetic field generating part, a circulation volume rate ascertaining part and a control unit. The magnetic field generating part generates a magnetic field in order to perform inductive heating. The circulation volume rate ascertaining part ascertains a circulating refrigerant volume rate. The control unit performs magnetic field output control when the circulating refrigerant volume rate ascertained by the circulation volume rate ascertaining part has increased. When this control is performed the magnetic field generating part is caused to generate a magnetic field, the magnetic field generated by the magnetic field generating part is increased, or the upper limit of the strength of the magnetic field generated by the magnetic field generating part is increased. | 01-05-2012 |
20120000228 | AIR CONDITIONING APPARATUS - An air conditioning apparatus includes a compression element, a refrigerant cooler, an expansion element, a refrigerant heater, a magnetic field generator, a generated heat temperature sensor and a control part. The magnetic field generator generates a magnetic field in order to induction-heat a refrigerant tube circulating refrigerant and/or a member in thermal contact with refrigerant flowing through the refrigerant tube. The generated heat temperature sensor senses temperature of a portion that generates heat due to the induction heating. The control part performs superheating protection control in order to increase an opening degree of the expansion mechanism when the temperature sensed by the generated heat temperature sensor reaches or exceeds a predetermined generated heat temperature, or when a rate of increase of the temperature sensed by the generated heat temperature sensor reaches or exceeds a predetermined rate of increase. | 01-05-2012 |
20120006040 | AIR CONDITIONING APPARATUS - An air conditioning apparatus includes a refrigeration cycle, a magnetic field generator, a detector and a control part. The refrigeration cycle has a compression element, a refrigerant tube in thermal contact with a refrigerant flowing through the refrigerant tube and/or a heat-generating member in thermal contact with a refrigerant flowing through the refrigerant tube. The magnetic field generator generates a magnetic field to inductively heat a heating target portion. The detector detects a state quantity in a state quantity detection portion of the refrigeration cycle. The control part performs startup magnetic field generation control during startup of an air-warming operation in which maximum magnetic field output is initiated until the state quantity detected reaches a first target state quantity, and post-startup magnetic field generation control in which the magnetic field output is restricted after the startup magnetic field generation control has ended. | 01-12-2012 |
20120023989 | AIR CONDITIONING APPARATUS - An air conditioning apparatus includes a compressor, an indoor and outdoor heat exchangers, an indoor fan, an outdoor expansion element, a refrigerant-pressure-perceiving part, which perceives a pressure of refrigerant sent from the compressor to the indoor heat exchanger, and a control part, which performs startup fan control in which the indoor fan remains stopped until the compression element goes from being at rest to starting up and the pressure perceived reaches a high-pressure threshold, the indoor fan is driven when the pressure perceived reaches or exceeds the high-pressure threshold. An action of reducing or stopping air volume of the indoor fan when the pressure perceived decreases to or falls below a low-pressure lower than the high-pressure threshold, and an action of increasing air volume or initiating driving of the indoor fan when the pressure perceived reaches or exceeds a pressure threshold which is higher than the low-pressure threshold. | 02-02-2012 |
20120060530 | AIR CONDITIONER - It is an object of the present invention to provide an air conditioner for inhibiting noise increase and heating performance degradation due to frost attachment onto an outdoor heat exchanger. In an air conditioner ( | 03-15-2012 |
20120060532 | HEATING DEDICATED AIR CONDITIONER - A heating dedicated air conditioner includes a compression mechanism, an indoor heat exchanger, an outdoor heat exchanger, an expansion mechanism provided between one end of the indoor heat exchanger and one end of the outdoor heat exchanger, a four-way switching valve switchable between first and second states of connection between the compressor and the heat exchangers, a fan ventilating the indoor heat exchanger, and a control unit controlling at least the compressor, the expansion mechanism, the four-way switching valve, and the fan. The control unit switches the four-way switching valve to the second state in a test operation mode, which includes a drain water inhibited interval during which drain water inhibition control is performed. The control unit operates the compressor and stops the fan when the drain water inhibition control is performed. | 03-15-2012 |