air conditioner
A technology for air conditioners and compressors, applied to air conditioning systems, compressors, refrigerators, etc., which can solve the problem of limited heat storage of heat storage components 126, and achieve the effect of efficient defrosting operation
Active Publication Date: 2015-08-19
PANASONIC CORP
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Problems solved by technology
[0010] However, not only is the amount of heat stored in the heat storage member 126 inside the heat storage tank 124 limited, but also in the refrigeration cycle described in Patent Document 1, when the temperature of the heat storage member 126 is low, the heating operation cannot be performed at the same time. There is still room for improvement from the viewpoint of efficient defrosting operation while continuing to perform defrosting operation
Method used
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Embodiment Construction
[0058]The first invention provides an air conditioner, which includes: the refrigerant is connected in such a way that the refrigerant flows through the compressor, the four-way valve, the indoor heat exchanger, the expansion valve, the outdoor heat exchanger, and the four-way valve in sequence during the heating operation. refrigerating cycle; and a built-in heat storage tank that stores heat generated by the compressor and a heat storage heat exchanger, and also includes: connecting between the indoor heat exchanger and the expansion valve and between the four-way valve and the compressor Thermal storage bypass circuit connected between the suction port; defrost bypass circuit connected between the expansion valve and the outdoor heat exchanger and between the discharge port of the compressor and the four-way valve; detection of outdoor heat exchange during heating operation An outdoor heat exchanger inlet temperature detection unit for the refrigerant inlet temperature of th...
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An air conditioner is provided with a heat storage tank 32 that accommodates a heat storage material 36 for storing therein heat generated by a compressor 6 and a heat storage heat exchanger 34. A heat storage bypass circuit is provided to connect a refrigerant pipe between an indoor heat exchanger 16 and an expansion valve 12 and a refrigerant pipe between a four-way valve 8 and an inlet port defined in the compressor 6, and a defrosting bypass circuit is provided to connect a refrigerant pipe between the expansion valve 12 and an outdoor heat exchanger 14 and a refrigerant pipe between an outlet port defined in the compressor 6 and the four-way valve 8. If an outdoor heat exchanger inlet temperature sensor 44 detects a defrosting initiation temperature, a defrosting operation is initiated. Also, if the temperature detected by the outdoor heat exchanger inlet temperature sensor is less than a heat storage material temperature rise-initiation temperature higher than the defrosting initiation temperature, and if a temperature detected by a heat storage tank temperature sensor 50 does not reach a predetermined temperature, a control for increasing the temperature of the heat storage tank 32 is performed.
Description
technical field [0001] The present invention relates to an air conditioner including a heat storage tank for accommodating a heat storage member storing heat generated by a compressor, and a heat storage heat exchanger for exchanging heat by using the heat stored in the heat storage member. Background technique [0002] Conventionally, when the outdoor heat exchanger is frosted during the heating operation of the heat pump air conditioner, the four-way valve is switched so as to switch from the heating cycle to the cooling cycle to perform defrosting. In this defrosting method, although the indoor fan is stopped, cold air is gradually released from the indoor unit and the heating feeling is lost. [0003] Therefore, it has been proposed to install a heat storage device in the compressor installed in the outdoor unit, and to perform defrosting by using waste heat of the compressor stored in the heat storage tank during heating operation (for example, refer to Patent Document ...
Claims
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IPC IPC(8): F24F1/00F25B47/00F24F11/00
CPCF25B2313/0314F25B2600/2501F25B2700/2111F25B2313/02741F25B2400/05F25B2600/0253F25B47/022F25B2400/04F25B2400/24F25B49/022Y02B30/741F25B2700/2106Y02B30/52F25B2313/0315F25B31/006F25B13/00Y02B30/70
Inventor 加守田广和十仓聪大门宽幸川添大辅
Owner PANASONIC CORP