摘要:
The system uses a non-azeotropic mixture as refrigerant and comprises: a main refrigerant circuit connected by a compressor (1), a four-way valve (2), an outdoor heat-exchanger (3), a first throttling device (4a-c), a plurality of indoor heat-exchangers (5a-c), and a low-pressure receiver (6); a bypass circuit diverging from the discharge portion of the compressor (1) and extending through a composition detecting heat-exchanger (9) and a second throttling device (8) to the low-pressure side; an outdoor fan (7) associated with the outdoor heat-exchanger (3); a first temperature detector (103) to detect refrigerant temperature upstream of the second throttling device (9); a second temperature detector (104) to detect refrigerant temperature downstream of the second throttling device (8); a first pressure detector (102) to detect pressure downstream of the second throttling device (8); a third temperature detector (105a-c) to detect temperature in the main circuit between the first throttling device (4a-c) and the indoor heat-exchangers (5a-c); a fourth temperature detector (106a-c) to detect temperature at the low-pressure side; a second pressure detector (101) to detect the pressure at the high-pressure sides a device (21) for calculating the composition of the mixture refrigerant, a main controller (22) for controlling the speed of the compressor (1) ) and the speed of the fan (7) on the basis of the refrigerant composition and pressure; and a controller (23) for controlling the opening of the first throttling device (4a-c).
摘要:
A control-information detecting apparatus for a refrigeration air-conditioner using a non-azeotrope refrigerant is equipped with a temperature detector (11) and a pressure detector (12) at the refrigerating cycle of the air-conditioner, which cycle is formed by connecting a compressor (1), a condenser (2), a decompressing device (3), and an evaporator (4), to detect the temperature (T₁) and the pressure (P₁) of the refrigerant circulating the cycle for obtaining the circulation composition of the refrigerant with the composition computing unit (2) thereof. The usual optimum operation of the cycle is thereby enabled even if the circulation composition of the refrigerant has changed.
摘要:
A compressor (1) draws in gaseous refrigerant optionally containing liquid refrigerant and discharges high-pressure gaseous refrigerant. A condenser (2) downstream of the compressor (1) condenses the high-pressure gaseous refrigerant. A throttle mechanism (3) downstream of the condenser (2) reduces the pressure of liquid refrigerant, optionally containing gaseous refrigerant, leaving the condenser (2). An evaporator (4) downstream of the throttle mechanism (3) vaporizes the liquid refrigerant or gas-liquid phase refrigerant leaving the throttle mechanism (3), the vaporized refrigerant constituting the gaseous refrigerant, optionally containing liquid refrigerant, which is drawn into the compressor (1). A refrigerating oil (6) is contained in the compressor (1) or a separate tank, at least part of the refrigerating oil being exposed to the refrigerant, for performing the function of lubrication or sealing. The refrigerant is based on fluoroamine, fluoroether, fluoropropane, fluoroethane, fluorosilane, or fluorosulfur. The refrigerating oil is lighter than the liquid refrigerant and dissolves only slightly in it. The temperature for separation into two layers, one being the refrigerant and the other being the refrigerating oil, is at least equal to the condensing temperature.
摘要:
A compressor (1) draws in gaseous refrigerant optionally containing liquid refrigerant and discharges high-pressure gaseous refrigerant. A condenser (2) is downstream of the compressor (1) condenses the high-pressure gaseous refrigerant. A throttle mechanism (3) downstream of the condenser (2) reduces the pressure of liquid refrigerant, optionally containing gaseous refrigerant, leaving the condenser (2). An evaporator (4) downstream of the throttle mechanism (3) vaporizes the liquid refrigerant or gas-liquid phase refrigerant leaving the throttle mechanism (3), the vaporized refrigerant constituting the gaseous refrigerant, optionally containing liquid refrigerant, which is drawn into the compressor (1). A refrigerating oil (6) is contained in the compressor (1) or a separate tank, at least part of the refrigerating oil being exposed to the refrigerant for performing the function of lubrication or sealing. The refrigerant is a mixture of refrigerants at least one of which is inflammable. The refrigerating oil is lighter than the liquid refrigerant and dissolves only slightly in it.
摘要:
A compressor (1) draws in gaseous refrigerant optionally containing liquid refrigerant and discharges high-pressure gaseous refrigerant. A condenser (2) is downstream of the compressor (1) condenses the high-pressure gaseous refrigerant. A throttle mechanism (3) downstream of the condenser (2) reduces the pressure of liquid refrigerant, optionally containing gaseous refrigerant, leaving the condenser (2). An evaporator (4) downstream of the throttle mechanism (3) vaporizes the liquid refrigerant or gas-liquid phase refrigerant leaving the throttle mechanism (3), the vaporized refrigerant constituting the gaseous refrigerant, optionally containing liquid refrigerant, which is drawn into the compressor (1). A refrigerating oil (6) is contained in the compressor (1) or a separate tank, at least part of the refrigerating oil being exposed to the refrigerant for performing the function of lubrication or sealing. The refrigerant is a mixture of refrigerants at least one of which is inflammable. The refrigerating oil is lighter than the liquid refrigerant and dissolves only slightly in it.
摘要:
The system circulates a refrigerant containing hydrofluorocarbon as a main ingredient in a refrigerant circuit comprising a compressor (1), a condenser (2), and an evaporator (4). The assembly method includes applying oil to a compressor bearing (7) as a process oil, the oil being insoluble with the refrigerant, and storing oil within a compressor housing (11) as a lubricating oil, the oil being insoluble with the refrigerant, low in viscosity, and smaller in specific gravity than the refrigerant.
摘要:
A refrigerant which contains hydrofluorocarbon as a main ingredient is circulated in a circuit comprising a compressor (1), a condenser (2), and an evaporator (4). Oil (6) is stored in the compressor (1) to lubricate moving parts and to seal a compression chamber. Lubricating oil which flows out of the compressor circulates with the refrigerant but is separated from the refrigerant, being insoluble with the refrigerant at liquid phase in the circuit. The oil has low viscosity and small specific gravity.