摘要:
An orbiting scroll 2 is made of an alloy having a composition of 8-10% by weight of silicon, 2-5% by weight of copper, 0.5-0.8% by weight of magnesium, and remaining percentage of aluminum. The key slots 9 of the orbiting scroll 2 are coated with a layer of hard alumite impregnated by molybdenum disulfide to thereby provide the orbiting scroll 2 with sufficient mechanical strength to stand severe operating conditions and to drastically decrease the frictional abrasion of the key slots.
摘要:
A highly reliable scroll compressor adapted to make the amount of a refrigerant taken in through a first suction inlet of a scroll compression element as equal as possible to that taken in through a second suction inlet of the scroll compression element so as to improve the intake efficiency, thereby suppressing pulsation and noise. If the sectional area of the inlet of a refrigerant passage through which a refrigerant taken in flows from an end of a swivel lap via the outer periphery thereof to the second suction inlet is denoted as A1, the sectional area of the inlet of the first suction inlet is denoted as A2, and the sectional area of the inlet of a communication groove is denoted as A3 when the gap between a stationary lap and the swivel lap of the scroll compression element reaches its maximum, then A1, A2, and A3 stay within a range defined by 1.5≦A2/(A1+A3)≦2.5.
摘要:
A scroll compressor having a first scroll member and a second scroll member includes a discharge valve device for closing an opening of a discharge port in which the discharge opening is disposed in at least one of the first and second scroll members. The discharge valve device is configured so that it is effected by a centrifugal force during operation of the scroll compressor. The centrifugal force normally maintains the discharge valve device in an open position with respect to the discharge opening. Thus, the discharge valve device is not actuated by a pressure difference between the discharge opening and the high pressure chamber and the scroll members are not rotated in reverse when operation of the scroll compressor is stopped.
摘要:
A scroll compressor has a first scroll member and a second scroll member rotated in the same direction as the first scroll member. A limit plate is provided to limit an axial movement of one of the scroll members with respect to the other. A pressure chamber is formed between the limit plate and an end plate of the scroll member, and the pressure chamber is connected to a compression space formed by the two scroll members. A resilient sealing device is provided in the pressure chamber so that the sealing device is contacted with at least one of the limit plate and the end plate of the scroll member.
摘要:
A compression chamber of a scroll compression element driven by a crank shaft of an electromotive element and stored in an upper portion of a closed container is formed by engaging spiral wraps formed on the mirror plates of a fixed scroll member and an orbiting scroll member with each other, a bush portion having an engagement hole to be engaged with an upper end portion of the crank shaft is formed in a central axis portion of the under surface of the mirror plate of the orbiting scroll member, a space formed between the engagement hole of the bush portion and the upper end portion of the crank shaft serves as an oil input port, lubricating oil which is stored in an oil reservoir in an inner bottom portion of the closed container and goes up through an oil passage formed within the crank shaft by an oil pump unit is supplied from the oil input port into the compression chamber, oil injection communication passages communicating with the compression chamber from the oil input port are formed in the mirror plate of the orbiting scroll member, and the open ends on the compression chamber side of the oil injection communication passages are made open to positions near terminal portions of the spiral wraps for an initial-stage compression room formed in the fixed scroll member and the orbiting scroll member.
摘要:
A scroll compressor incorporates an electric motor unit and a scroll compressor unit in a sealed container. The scroll compressor unit has a frame having a bearing at the center thereof, a first scroll driven by the electric motor unit having an end plate and a wrap of an involute curve projecting from the end plate, and a second scroll having an end plate and a wrap of an involute curve projecting from the end plate of the second scroll provided in a juxtaposed relation with the first scroll so that the wraps of the two scrolls are fitted closely together to form a plurality of compression spaces. A driving device rotates the second scroll in the same direction as the first scroll. The driving device has a driving pin disposed on an outer circumference of either the first or second scroll and a guide groove extending in a radial direction of the other of the first or second scroll for receiving the driving pin in such a manner that a circle orbit of an outer circumference of the guide groove is located outside a circle orbit of a center of the driving pin. By this construction, the first scroll driven by the electric motor unit and the second scroll in confronting engagement with the first scroll are rotated in the same direction by a single driving device for compression.