JP2009109156A5 - - Google Patents

Claims (13)

A refrigerant circuit having a compressor, a four-way valve, an indoor heat exchanger, a decompressor, an outdoor heat exchanger, and a liquid reservoir;
A refrigerant cylinder connected to the low pressure side of the refrigerant circuit without providing a valve other than the valve provided in the cylinder;
When determining the appropriateness of the refrigerant charge amount in the refrigerant circuit , the liquid side pipe of the connection pipe connecting the indoor unit with the indoor heat exchanger and the outdoor unit with the outdoor heat exchanger A control device for determining a charging state as an operation mode existing in a liquid refrigerant state, and performing control for charging the refrigerant from the refrigerant cylinder to the refrigerant circuit ;
A refrigerant charging device for a refrigerating and air-conditioning apparatus, comprising: a display device provided in the control device and displaying a charging state of the refrigerant. While operating the refrigerating and air-conditioning apparatus, the refrigerant circuit is filled with refrigerant from the refrigerant cylinder, and when it is determined that the amount of refrigerant is appropriate, the compressor is automatically stopped and the four-way valve is switched. The refrigerant | coolant filling apparatus to the refrigerating air-conditioning apparatus of Claim 1.   The refrigerant filling device for a refrigerating and air-conditioning apparatus according to claim 1 or 2, further comprising a temperature detection device that detects a state of the refrigerant circuit. A refrigerant circuit having a compressor, a four-way valve, an indoor heat exchanger, a decompression device, an outdoor heat exchanger, a liquid storage device, and the indoor heat serving as at least room temperature, outside air temperature, condensation temperature, evaporation temperature, and condenser A temperature detecting device for detecting an outlet temperature of the exchanger or the outdoor heat exchanger, a refrigerant cylinder connected to the low pressure side of the refrigerant circuit when the refrigerant is charged, and charging the refrigerant from the refrigerant cylinder to the refrigerant circuit In the refrigerant charging method to the refrigerating and air-conditioning apparatus having the control device for performing the control at the time and determining the charging state,
When the refrigerant amount state determination value is calculated from the temperature detected by the temperature detection device and the value is appropriate, the compressor is stopped and the four-way valve is switched so that the pressure in the refrigerant circuit is uniform and the refrigerant charge amount A refrigerant charging method for a refrigerating and air-conditioning apparatus, wherein the determination operation is stopped.   5. The refrigerant charging method for a refrigerating and air-conditioning apparatus according to claim 4, wherein when the refrigerant amount state determination value is appropriate, the refrigerant filling amount determination operation is stopped by further fully opening the decompression device. The control device has a display device,
6. The refrigerant air conditioning apparatus according to claim 4 or 5, wherein when the amount of the refrigerant is too small, an indication that the refrigerant is extremely insufficient is displayed on the display device, and the refrigerant is quickly charged. Refrigerant filling method. An indoor unit and an outdoor unit,
The method for charging refrigerant into a refrigeration air conditioner according to any one of claims 4 to 6, wherein when the decompression device is provided in the outdoor unit, the operation of the refrigeration air conditioner is a heating operation. An indoor unit and an outdoor unit,
The method for charging refrigerant into a refrigeration air conditioner according to any one of claims 4 to 6, wherein when the decompression device is provided in the indoor unit, the operation of the refrigeration air conditioner is a cooling operation.   9. The refrigerant charging method for a refrigerating and air-conditioning apparatus according to any one of claims 4 to 8, wherein the operation time is changed without adding an amount of refrigerant according to the outside air temperature.   The refrigerating and air-conditioning according to claim 9, wherein when the outside air temperature is higher than a predetermined value, the operation time without adding the refrigerant from the refrigerant cylinder is made shorter than when the outside air temperature is lower than the predetermined value. A method for filling the apparatus with refrigerant. The control device has a display device,
The said control apparatus calculates the said refrigerant | coolant amount state determination value in real time, The calculation result of the said control apparatus is displayed on the said display apparatus, The refrigeration air conditioner in any one of Claim 4 thru | or 10 characterized by the above-mentioned. Refrigerant filling method.   In the charging of the refrigerant when the refrigerant amount state determination value is too small or small, the maximum amount to be filled with the refrigerant in a predetermined time is within 3% of the refrigerant amount sealed in advance in the refrigerant circuit. The refrigerant filling method for a refrigerating and air-conditioning apparatus according to any one of claims 4 to 11, wherein:   13. The refrigerant charging method for a refrigerating and air-conditioning apparatus according to claim 4, wherein the control device records an operation history after completing the refrigerant charging amount determination operation.