Air-conditioning device and air-conditioning system

Abstract

Provided is an air-conditioning device that includes an outdoor unit and an indoor unit, the outdoor unit including a compressor, the indoor unit being connected to the outdoor unit, the air-conditioning device including a heating means provided to the compressor, and configured to heat refrigerant in the compressor, and a controller configured to control the heating means. The controller includes a heat load learning unit configured to learn a heat load based on temperature data and air conditioning data, a stagnation prevention control start timing estimation unit configured to estimate a stagnation prevention control start timing based on the heat load obtained by learning, the stagnation prevention control start timing being a timing at which a stagnation prevention control of heating the compressor is started, and a device control unit configured to control the heating means such that the stagnation prevention control is performed by the heating means at the stagnation prevention control start timing estimated.

1 . An air-conditioning device that includes an outdoor unit and an indoor unit, the outdoor unit including a compressor, the indoor unit being connected to the outdoor unit, the air-conditioning device comprising:
 a heating means provided to the compressor, and configured to heat refrigerant in the compressor; and   a controller configured to control the heating means,   the controller being   configured to learn a heat load based on temperature data and air conditioning data,   configured to estimate a stagnation prevention control start timing based on the heat load obtained by learning, the stagnation prevention control start timing being a timing at which a stagnation prevention control of heating the compressor is started, and   configured to control the heating means such that the stagnation prevention control is performed by the heating means at the stagnation prevention control start timing estimated.   
     
     
         2 . The air-conditioning device of  claim 1 , further comprising:
 an outside air temperature sensor configured to detect an outside air temperature; and   an indoor temperature sensor configured to detect an indoor temperature, wherein   the controller is configured to acquire, as the temperature data, the outside air temperature detected and the indoor temperature detected.   
     
     
         3 . The air-conditioning device of  claim 1 , wherein the controller is configured to acquire an operating frequency of the compressor as the air conditioning data. 
     
     
         4 . The air-conditioning device of  claim 1 , wherein the controller is configured to acquire, as the air conditioning data, a set temperature set for the indoor unit. 
     
     
         5 . An air-conditioning device that includes an outdoor unit and an indoor unit, the outdoor unit including a compressor, the indoor unit being connected to the outdoor unit, the air-conditioning device comprising:
 a heating means provided to the compressor, and configured to heat refrigerant in the compressor; and   a controller configured to control the heating means,   the controller being   configured to learn an outside air temperature for a set time interval based on a current outside air temperature,   configured to calculate, based on the outside air temperature obtained by learning, a stagnation prevention control required time period indicating a time period required for a stagnation prevention control of heating the compressor, and   configured to derive, based on a set time and the stagnation prevention control required time period, a stagnation prevention control start timing at which the stagnation prevention control is started, and configured to control the heating means such that the stagnation prevention control is performed by the heating means at the stagnation prevention control start timing derived for the stagnation prevention control required time period calculated.   
     
     
         6 . The air-conditioning device of  claim 1 , wherein the heating means is a heater attached to a periphery of the compressor. 
     
     
         7 . The air-conditioning device of  claim 1 , wherein the heating means is an energization control device configured to control energization of the compressor. 
     
     
         8 . An air-conditioning system comprising:
 at least one air-conditioning device that includes an outdoor unit and an indoor unit, the outdoor unit including a compressor, the indoor unit being connected to the outdoor unit; and   a management device configured to manage the at least one air-conditioning device,   the at least one air-conditioning device including a heating means provided to the compressor, and configured to heat refrigerant in the compressor,   the management device including a controller configured to control the heating means,   the controller being   configured to learn a heat load based on temperature data and air conditioning data,   configured to estimate a stagnation prevention control start timing based on the heat load obtained by learning, the stagnation prevention control start timing being a timing at which a stagnation prevention control of heating the compressor is started, and   configured to control the heating means such that the stagnation prevention control is performed by the heating means at the stagnation prevention control start timing estimated.   
     
     
         9 . (canceled)