Air-conditioning apparatus and air-conditioning system executing a precooling operation or a preheating operation
First Claim
1. An air-conditioning apparatus executing a precooling operation or a preheating operation such that an indoor temperature representing a current temperature inside a building containing the air-conditioning apparatus reaches a target temperature, the air-conditioning apparatus comprising:
- a refrigeration cycle including a compressor;
a controller configured to control the refrigeration cycle including the compressor; and
a temperature sensor configured to detect the indoor temperature,wherein the controller is configured tocontrol a setting temperature of the air-conditioning apparatus during execution of the precooling operation or the preheating operation such that a first temperature difference between the indoor temperature, as detected by the temperature sensor, and the setting temperature is not less than a threshold temperature difference above which the compressor performs operation,determine a second temperature difference between the indoor temperature, as detected by the temperature sensor, and the target temperature, andchange the setting temperature to the target temperature when the determined second temperature difference is less than the first temperature difference.
1 Assignment
0 Petitions
Accused Products
Abstract
In an air-conditioning system, during precooling or preheating control, a setting temperature is controlled such that a first temperature difference between the setting temperature and an indoor temperature is not less than a temperature difference at which a compressor performs operation, and the setting temperature is controlled to be changed to a target temperature when a second temperature difference between the indoor temperature and the target temperature is less than the first temperature difference. Since the compressor can be operated in the range from a low capacity to a medium capacity, operation efficiency of the air-conditioning apparatus can be increased, and the energy-saving operation with less power consumption can be realized. Since the operation capacity of the compressor can be readily suppressed with adjustment of the setting temperature, control is facilitated and the precooling control can be incorporated in various types of air-conditioning apparatuses.
26 Citations
20 Claims
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1. An air-conditioning apparatus executing a precooling operation or a preheating operation such that an indoor temperature representing a current temperature inside a building containing the air-conditioning apparatus reaches a target temperature, the air-conditioning apparatus comprising:
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a refrigeration cycle including a compressor; a controller configured to control the refrigeration cycle including the compressor; and a temperature sensor configured to detect the indoor temperature, wherein the controller is configured to control a setting temperature of the air-conditioning apparatus during execution of the precooling operation or the preheating operation such that a first temperature difference between the indoor temperature, as detected by the temperature sensor, and the setting temperature is not less than a threshold temperature difference above which the compressor performs operation, determine a second temperature difference between the indoor temperature, as detected by the temperature sensor, and the target temperature, and change the setting temperature to the target temperature when the determined second temperature difference is less than the first temperature difference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 13, 14, 15, 16)
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9. An air-conditioning system comprising:
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an air-conditioning apparatus executing a precooling operation or a preheating operation such that an indoor temperature representing a current temperature inside a building containing the air-conditioning apparatus reaches a target temperature by using a refrigeration cycle including a compressor; a controller configured to control the air-conditioning apparatus; a temperature sensor configured to detect the indoor temperature; and a receptor configured to receive an operation control instruction from outside of the building, wherein the controller is configured to control a setting temperature of the air-conditioning apparatus during execution of the precooling operation or the preheating operation such that a first temperature difference between the indoor temperature, as detected by the temperature sensor, and the setting temperature is not less than a threshold temperature difference above which the compressor performs operation, measure a second temperature difference between the indoor temperature, as detected by the temperature sensor, and the target temperature, and change the setting temperature to the target temperature when the measured second temperature difference is less than the first temperature difference. - View Dependent Claims (11, 12, 17, 18, 19, 20)
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Specification