摘要:
A compressor (100) includes a closed casing (101), a compression mechanism (120), a motor (130) and an oil separating member (17A). The oil separating member (17A) rotates together with a shaft (140). The oil separating member (17A) has a peripheral wall (173) and a bottom wall (175) that form a recess (171). An inlet of a discharge pipe (160) penetrating the closed casing (101) is located in the recess (171). A plurality of oil expelling ports (174) are provided in the peripheral wall (173) of the oil separating member (17A) so as to be scattered.
摘要:
A refrigeration cycle apparatus 100 according to the present invention includes: a refrigerant circuit 160 including a compressor 101, a condenser (102 or 106), a first throttling device (103 or 105), a gas-liquid separator 104, a second throttling device (105 or 103), and an evaporator (106 or 102); an injection passage 170 through which a gas phase refrigerant separated out in the gas-liquid separator 104 is supplied to the compressor 101 during a compression process; a detector 130 for detecting a temperature or a pressure of a refrigerant present on a downstream side of the first throttling device and on an upstream side of the second throttling device in the refrigerant circuit 160 or present in the injection passage 170; and a controller 108 for decreasing an opening degree of the first throttling device when the controller 108 recognizes, by the detector 130, that a pressure of the refrigerant flowing into the gas-liquid separator 104 exceeds a specified pressure lower than a saturation vapor pressure, in a starting operation, a defrosting operation or a stopping operation.
摘要:
A rotary-type fluid machine (10A) includes: a closed casing (1) having a bottom portion utilized as an oil reservoir, a rotary-type fluid mechanism (expansion mechanism) (15) that is provided in an upper portion of the closed casing (1) and in which working chambers (32, 33) in cylinders (22, 24) are partitioned into a suction side working chamber and a discharge side working chamber by vanes (28, 29), a shaft (5) having therein an oil supply passage (51) for supplying oil to the fluid mechanism (15), the shaft being connected to the fluid mechanism (15) and extending an oil reservoir (45), an oil pump (52) provided at a lower portion of the shaft (5), an oil retaining portion (65) for retaining oil, which is pumped up by the oil pump (52) and supplied through the oil supply passage (51), in a surrounding region around the fluid mechanism (15) to allow the partitioning members of the fluid mechanism (15) to be lubricated, the oil retaining portion formed so that the liquid level of the oil retained therein is positioned higher the lower face of the partitioning members (28, 29).
摘要:
A plurality of vertically standing plates are assembled in a lattice form to a divided member 101 as a floating type wave-suppressing members. The divided member 101 is allowed to float in an interface 24 between working fluid and refrigeration oil of an oil reservoir 21. The interface 24 is prevented from rippling by turning flow, oil drops torn from the interface 24 by the turning flow is reduced, and oil drops of the refrigeration oil are prevented from being supplied from the interface 24 to the working fluid.
摘要:
A projection of an upper bearing member is provided with a porous member, and a lower space between a rotational motor and a compression mechanism is defined into a lower compression mechanism-side space and a lower rotational motor-side space. With this structure, stirring effect of working fluid flowing in the lower compression mechanism-side space caused by rotation of the rotor is suppressed, and oil drops mixed in the working fluid are prevented from being finely divided by the stirring effect, the oil drops are allowed to fall due to the gravity in the lower compression mechanism-side space, and oil separating effect from the working fluid is enhanced.
摘要:
A compressor (100) includes a closed casing (101), a compression mechanism (120), a motor (130) and an oil separating member (17A). The oil separating member (17A) rotates together with a shaft (140). The oil separating member (17A) has a peripheral wall (173) and a bottom wall (175) that form a recess (171). An inlet of a discharge pipe (160) penetrating the closed casing (101) is located in the recess (171). A plurality of oil expelling ports (174) are provided in the peripheral wall (173) of the oil separating member (17A) so as to be scattered.
摘要:
A rotary compressor (102) has a shaft (4), a cylinder (5), a piston (8), a first vane (32), a second vane (33), a first suction port (19), and a second suction port (20). The first vane (32) divides a space between the cylinder (5) and the piston (8) along a circumferential direction of the piston (8). The second vane (33) further divides the space divided by the first vane (32) along the circumferential direction of the piston (8) so that a first compression chamber (25) and a second compression chamber (26) having a smaller volume than the first compression chamber (25) are formed within the cylinder (5). The first suction port (19) introduces a working fluid into the first compression chamber (25). The second suction port (20) introduces a working fluid into the second compression chamber (26). The second suction port (20) is provided with a suction check valve (50).
摘要:
The expander-compressor unit 70 includes the closed casing 1, the expansion mechanism 4 disposed in the closed casing 1 so that a surrounding space thereof is filled with the oil, the compression mechanism 2 disposed in the closed casing 1 so as to be positioned higher than the oil level, the shaft 5 for coupling the compression mechanism and the expansion mechanism 4 to each other, and the oil flow suppressing member 50 disposed in the surrounding space of the expansion mechanism 4 so that the space 55a filled with the oil is formed between the expansion mechanism 4 and the oil flow suppressing member 50. Thereby the flow of the oil filling the inner reserving space 55a is suppressed, and thus, heat transfer from the high temperature oil to the low temperature expansion mechanism can be reduced.
摘要:
A hydrogen generation system (2A) includes a hydrogen generation unit (201) that holds a first liquid containing water and that allows a part of the water contained in the first liquid to be decomposed into hydrogen and oxygen, and at least a part of the first liquid to be heated, by being irradiated with sunlight, a first heat exchanger (207) that cools the first liquid heated in the hydrogen generation unit (201) and heats the second liquid by heat exchange between the first liquid and the second liquid, and a mechanism (for example, a circulation line (204) and a pump (205)) that introduces the first liquid cooled in the first heat exchanger (207) into the hydrogen generation unit (201).
摘要:
A heat pump heating system (1A) includes: a refrigerant circuit (3) including a compressor (21), a radiator (22), and an expansion member (25A), and an evaporator (26); a circulation path (5) for circulating a liquid through the radiator (22) to produce a heated liquid; and a heater (4) for dissipating heat of the heated liquid. The refrigerant circuit (3) is provided with an internal heat exchanger (23A) for transferring heat from a high pressure refrigerant that has released heat in the radiator (22) to a low pressure refrigerant. The liquid flowing through the circulation path (5) is cooled in a liquid cooling heat exchanger (24) by means of the high pressure refrigerant flowing out of the internal heat exchanger (23A), before the liquid flows into the radiator (22).