Abstract: An air-conditioning apparatus includes a compressor, an outdoor fan, and a controller configured to perform a fan intermittent operation for causing the outdoor fan to run and stop repeatedly after the compressor stops. The controller is configured to, in the fan intermittent operation, in a case where the outdoor fan is running and there is no snow accumulation on the outdoor fan, change a stop upper limit time for the outdoor fan depending on a running time of the outdoor fan in the fan intermittent operation and cause the outdoor fan to stop running after changing the stop upper limit time for the outdoor fan. The controller is configured to, in a case where a stop time of the outdoor fan exceeds the changed stop upper limit time, cause the outdoor fan to run.

Abstract: Provided is an air conditioner management system including an air conditioner and an aircraft. The air conditioner includes a position information provider configured to provide position information indicating a position of the air conditioner. The aircraft includes: a position information acquisitor configured to acquire the position information provided; and a measurer configured to perform a measurement regarding the air conditioner, based on the position information acquired. Thereby, it is possible to measure a specific air conditioner.

Abstract: An air-conditioning apparatus includes configured to, when a cooling operation mode is changed into one of multiple dehumidifying operation modes, select the one of the multiple dehumidifying operation modes on the basis of a value of a sensible heat ratio difference ?SHF that is a difference between a target sensible heat ratio acquired from an indoor temperature detected by an indoor temperature sensor, a target indoor temperature, and target indoor humidity and a theoretical minimum possible sensible heat ratio acquired from enthalpy of an indoor air, enthalpy of blown air from the indoor unit when relative humidity is 100%, and enthalpy of sensible heat.

Abstract: An aspect of a heat exchange unit of a refrigeration cycle device, includes a housing having openings, and gripping members attached to the openings. Each gripping member has a main body having an inner space that opens to an outside, and a plurality of claws that protrude from the main body and that hook to a circumferential edge of the openings. The plurality of claws include a plurality of first claw portions, and at least one second claw portion that is provided on an opposite side to the plurality of first claw portions in a predetermined direction that intersects the opening direction. At least one claw portion out of the plurality of first claw portions and the at least one second claw portion is an elastic claw that is cantilevered by the main body and is elastically deformable in the predetermined direction with respect to the main body.

Abstract: A refrigeration cycle apparatus includes a refrigerant circuit in which a compressor, a heat source side heat exchanger, an expansion valve, and a user side heat exchanger are connected by a refrigerant pipe. Further, the refrigeration cycle apparatus includes a detector configured to detect a discharge temperature of the compressor, and a heat transfer pipe temperature and an outlet pipe temperature of the heat exchanger functioning as a condenser; and a controller capable of performing a supercooling degree control and a discharge temperature control or a discharge superheating degree control, based on a result of the detection by the detector. The controller is configured to control an opening degree of the expansion valve based on any of the supercooling degree control and the discharge temperature control or the discharge superheating degree control, according to operating characteristics of the refrigeration cycle apparatus.

Abstract: An air-conditioning apparatus includes configured to, when a cooling operation mode is changed into one of multiple dehumidifying operation modes, select the one of the multiple dehumidifying operation modes on the basis of a value of a sensible heat ratio difference ?SHF that is a difference between a target sensible heat ratio acquired from an indoor temperature detected by an indoor temperature sensor, a target indoor temperature, and target indoor humidity and a theoretical minimum possible sensible heat ratio acquired from enthalpy of an indoor air, enthalpy of blown air from the indoor unit when relative humidity is 100%, and enthalpy of sensible heat.

Abstract: An outdoor unit of an air-conditioning apparatus includes a casing, and grasp portions provided at corner portions of the casing in plan view. Each grasp portion includes an outer peripheral portion at an outer periphery, and a finger hook portion protruding downward from an upper part of the outer peripheral portion and extending in a lateral direction of the finger hook portion. The outer peripheral portion includes a first opening such that a lower end portion of the finger hook portion is exposed as seen in a horizontal direction and a direction perpendicular to the lateral direction, a second opening below the finger hook portion and continuous with the first opening, and a third opening behind the finger hook portion and continuous with the second opening, the second opening and the third opening are at one of the lateral end portions.

Abstract: An air-conditioning device includes: a main circuit in which a refrigerant circulates; a flow channel-switching unit configured to select a certain parallel heat exchanger as a defrosting target; a bypass pipe; a temperature-detecting unit; an operation control unit configured to operate the flow channel-switching unit such that an operation mode is switched between a normal heating operation mode in which the plurality of parallel heat exchangers serve as evaporators and a defrosting heating operation mode in which one parallel heat exchanger is selected as the defrosting target to cause part of the refrigerant to flow thereinto via the bypass pipe and the other parallel heat exchangers serves as an evaporator; and an erroneous installation-sensing unit configured to sense erroneous installation of an installed component based on a magnitude relationship between the detected temperatures in the plurality of parallel heat exchangers detected by the temperature-detecting unit.

Abstract: An air-conditioning system includes an air-conditioning apparatus, a storage device, a deterioration estimation unit, a lifetime calculation circuitry, a control construction circuitry, and an air-conditioning control circuitry. The storage device stores the values of a plurality of contrast parameters indicating the operating status of a plurality of air-conditioning apparatuses including a contrast air-conditioning apparatus that is identical in condition to the air-conditioning apparatus and stores contrast deterioration information items indicating on a time-series basis the degree of deterioration. The deterioration estimation circuitry estimates, based on the values of an operation parameter and a contrast parameter, the degree of deterioration of the air-conditioning apparatus. The lifetime calculation circuitry extracts, based on the degree of deterioration, an extracted deterioration information item.

Abstract: A refrigeration cycle device includes a compressor to compress refrigerant, a suction-side detector to detect a pressure of the refrigerant to be suctioned into the compressor, a discharge-side detector to detect a pressure of the refrigerant discharged from the compressor, and controlling circuitry that controls the compressor. When the ratio of a second pressure value detected by the discharge-side detector to a first pressure value detected by the suction-side detector is not between a predetermined upper limit and a predetermined lower limit, the controlling circuitry controls the compressor such that the ratio falls between the predetermined upper limit and the predetermined lower limit.

Abstract: An outdoor unit of an air-conditioning apparatus includes: a terminal unit that is provided on an outer peripheral surface of a compressor, and electrically connects components provided in the compressor and outside the compressor; a side soundproof cover that covers the outer peripheral surface of the compressor except for the terminal unit; and a terminal cover that covers the terminal unit exposed from the side soundproof cover to the outside of the side soundproof cover, and soundproofs the terminal unit. The terminal cover is attached to the side soundproof cover such that the state of the terminal cover can be changed between a state in which the terminal cover covers the terminal unit and a state in which the terminal cover does not cover the terminal unit.

Abstract: An air-conditioning apparatus includes a compressor, an outdoor fan, and a controller configured to perform a fan intermittent operation for causing the outdoor fan to run and stop repeatedly after the compressor stops. The controller is configured to, in the fan intermittent operation, in a case where the outdoor fan is running and there is no snow accumulation on the outdoor fan, change a stop upper limit time for the outdoor fan depending on a running time of the outdoor fan in the fan intermittent operation and cause the outdoor fan to stop running after changing the stop upper limit time for the outdoor fan. The controller is configured to, in a case where a stop time of the outdoor fan exceeds the changed stop upper limit time, cause the outdoor fan to run.

Abstract: A soundproof part that covers a compressor includes a side surface cover including two or more sound absorbing materials and two or more sound insulating materials, and configured to cover a side surface of the compressor. The two or more sound insulating materials include sound insulating materials having different specific gravities. The side surface cover is formed such that one sound absorbing material is disposed adjacent to the compressor, and a sound absorbing material and a sound insulating material are alternately arranged. The side surface cover is also formed such that as a distance from the compressor increases, the sound insulating materials having relatively lower specific gravities are disposed.

Abstract: A refrigeration cycle device includes a compressor to compress refrigerant, a suction-side detector to detect a pressure of the refrigerant to be suctioned into the compressor, a discharge-side detector to detect a pressure of the refrigerant discharged from the compressor, and a control device having a function of controlling the compressor when the ratio of a second pressure value detected by the discharge-side detector to a first pressure value detected by the suction-side detector is not between a predetermined upper limit and a predetermined lower limit, such that the ratio falls between the upper limit and the lower limit.

Abstract: An air-conditioning apparatus enables a user to recognize both a leakage of refrigerant and an abnormal condition when a refrigerant leakage condition and the abnormal condition have occurred. When a condition in which a leakage of refrigerant is detected and a condition in which an abnormality is detected have occurred together, the refrigerant leakage condition and the abnormal condition are displayed together on a display part. Consequently, when the condition in which the leakage of refrigerant is detected and the condition in which the abnormality is detected have occurred, the user is allowed to recognize the leakage of refrigerant and the abnormal condition at once.

Abstract: A soundproof part that covers a compressor includes a side surface cover including two or more sound absorbing materials and two or more sound insulating materials, and configured to cover a side surface of the compressor. The two or more sound insulating materials include sound insulating materials having different specific gravities. The side surface cover is formed such that one sound absorbing material is disposed adjacent to the compressor, and a sound absorbing material and a sound insulating material are alternately arranged. The side surface cover is also formed such that as a distance from the compressor increases, the sound insulating materials having relatively lower specific gravities are disposed.

Abstract: An outdoor unit of an air-conditioning apparatus includes a casing, and grasp portions provided at at least two respective positions at corner portions of the casing as seen in plan view. The grasp portions each include an outer peripheral portion forming an outer periphery of each grasp portion, and a finger hook portion protruding downward from an upper part of the outer peripheral portion and extending in a lateral direction of the finger hook portion.

Abstract: An outdoor unit of an air-conditioning apparatus includes: a terminal unit that is provided on an outer peripheral surface of a compressor, and electrically connects components provided in the compressor and outside the compressor; a side soundproof cover that covers the outer peripheral surface of the compressor except for the terminal unit; and a terminal cover that covers the terminal unit exposed from the side soundproof cover to the outside of the side soundproof cover, and soundproofs the terminal unit. The terminal cover is attached to the side soundproof cover such that the state of the terminal cover can be changed between a state in which the terminal cover covers the terminal unit and a state in which the terminal cover does not cover the terminal unit.

Abstract: A control unit is configured to set a rotation speed of a compressor to be lower than that in a defrosting operation and set an opening degree of a pressure reducing device to be equal to or greater than that in the defrosting operation during a first control time after completion of the defrosting operation, stop the compressor and set the opening degree of the pressure reducing device to be less than that in the first control time during a second control time after lapse of the first control time, and control a refrigerant circuit switching device to resume a heating operation after lapse of the second control time.

Abstract: An air-conditioning apparatus enables a user to recognize both a leakage of refrigerant and an abnormal condition when a refrigerant leakage condition and the abnormal condition have occurred. When a condition in which a leakage of refrigerant is detected and a condition in which an abnormality is detected have occurred together, the refrigerant leakage condition and the abnormal condition are displayed together on a display part. Consequently, when the condition in which the leakage of refrigerant is detected and the condition in which the abnormality is detected have occurred, the user is allowed to recognize the leakage of refrigerant and the abnormal condition at once.