Air-conditioning device, control method and device, and computer-readable storage medium

Abstract

An air-conditioning device, a control method and device, and a computer-readable storage medium are provided. The air-conditioning device includes a compressor, a four-way valve, an indoor heat exchanger, an outdoor heat exchanger and a flash evaporator. The four-way valve is connected to the compressor through a first refrigerant branch, and a first control valve is arranged on the first refrigerant branch. A second refrigerant branch is connected in parallel to the first refrigerant branch; and a second control valve, and a hot-gas bypass pipe positioned at the bottom of the outdoor heat exchanger are arranged on the second refrigerant branch. A first refrigerant port of the flash evaporator is connected to the outdoor heat exchanger, a second refrigerant port of the flash evaporator is connected to the indoor heat exchanger, and an air outlet of the flash evaporator is connected to the compressor.

What is claimed is: 
     
         1 . An air-conditioning apparatus comprising:
 a compressor;   a four-way valve connected to the compressor through a first refrigerant branch;   a first control valve arranged on the first refrigerant branch;   an indoor heat exchanger connected to the four-way valve;   an outdoor heat exchanger connected to the four-way valve;   a second refrigerant branch connected in parallel to the first refrigerant branch;   a second control valve and a hot-air bypass pipe located at the bottom of the outdoor heat exchanger, wherein the second control valve and the hot-air bypass pipe are arranged on the second refrigerant branch; and   a flash evaporator, having a first refrigerant port connected to the outdoor heat exchanger, a second refrigerant port connected to the indoor heat exchanger, and an air outlet connected to the compressor.   
     
     
         2 . The air-conditioning apparatus of  claim 1 , wherein the air outlet of the flash evaporator is connected to the compressor through a third control valve. 
     
     
         3 . The air-conditioning apparatus of  claim 1 , wherein a capillary component is arranged between the first refrigerant port and the outdoor heat exchanger. 
     
     
         4 . The air-conditioning apparatus of  claim 1 , wherein an expansion valve is arranged between the second refrigerant port and the indoor heat exchanger. 
     
     
         5 . A control method applicable to an air-conditioning apparatus,
 the air-conditioning apparatus comprising:
 compressor; 
 a four-way valve connected to the compressor through a first refrigerant branch; 
 a first control valve arranged on the first refrigerant branch; 
 an indoor heat exchanger connected to the four-way valve; 
 an outdoor heat exchanger connected to the four-way valve; 
 a second refrigerant branch connected in parallel to the first refrigerant branch; 
 a second control valve and a hot-air bypass pipe located at the bottom of the outdoor heat exchanger, wherein the second control valve and the hot-air bypass pipe are arranged on the second refrigerant branch; and 
 a flash evaporator, having a first refrigerant port connected to the outdoor heat exchanger, a second refrigerant port connected to the indoor heat exchanger, and an air outlet connected to the compressor, 
   the control method comprising:
 controlling the first control valve and the second control valve respectively in response to an operating mode of the air-conditioning apparatus, to adjust heat supply for the hot-air bypass pipe. 
   
     
     
         6 . The control method of  claim 5 , wherein the controlling the first control valve and the second control valve respectively in response to an operating mode of the air-conditioning apparatus comprises:
 obtaining an outdoor ambient temperature in response to the air-conditioning apparatus operating in a heating mode; and   controlling the first control valve and the second control valve respectively based on the outdoor ambient temperature and a preset ice condensation value.   
     
     
         7 . The control method of  claim 6 , further comprising:
 in response to the outdoor ambient temperature being lower than the preset ice condensation value, controlling the first control valve to be closed, and controlling the second control valve to be turned on.   
     
     
         8 . The control method of  claim 6 , further comprising:
 in response to the outdoor ambient temperature being higher than or equal to the preset ice condensation value, controlling the first control valve to be turned on, and controlling the second control valve to be closed.   
     
     
         9 . The control method of  claim 5 , further comprising:
 in response to the air-conditioning apparatus operating in a cooling mode, controlling the first control valve to be turned on, and controlling the second control valve to be closed.   
     
     
         10 . The control method of  claim 5 , further comprising:
 in response to the air-conditioning apparatus operating in a cooling and defrosting mode, controlling the first control valve to be closed, and controlling the second control valve to be turned on.   
     
     
         11 . The control method of  claim 5 , wherein the air outlet of the flash evaporator is connected to the compressor through the third control valve, and the control method further comprises:
 in response to the air-conditioning apparatus operating in a cooling mode or a cooling and defrosting mode, controlling the third control valve to be closed; and   in response to the air-conditioning apparatus operating in a heating mode, controlling the third control valve to be turned on.   
     
     
         12 . An operation control apparatus comprising:
 a memory; and   at least one processor,   wherein a computer program is stored in the memory and executable by the at least one processor, wherein the computer program, when executed by the at least one processor, causes the at least one processor to perform the control method for the air-conditioning apparatus of  claim 5 .   
     
     
         13 . A computer-readable storage medium, storing a computer-executable instruction which, when executed by a computer, causes the computer to perform the control method for the air-conditioning apparatus of  claim 5 .