Abstract:
PROBLEM TO BE SOLVED: To maintain stable lubrication in a compressor mechanism without losing oil supply into the compression mechanism even if a compressor is inclined horizontally or vertically when a vehicle travels on a slope.SOLUTION: The compressor includes a partition wall 8a partitioning and separating an upper discharge chamber 15 and a lower oil storage chamber 9 of the compressor. The compressor is provided with a dividing wall 22 at an upper part of which has a gas communication hole 23 communicating with the discharge chamber; and at a lower part which has an oil communication hole 24 through which refrigeration machine oil flows into the oil storage chamber. This configuration allows the dynamic pressure of discharged gas to press the refrigeration machine oil remaining at a lower part of a comp case to flow into the oil storage chamber, and also makes the refrigeration machine oil hardly flow out of the oil storage chamber since the oil storage chamber is partitioned and separated from the other space with the partition wall, thus maintaining the level of oil in the oil storage chamber at a level higher than that at an oil supply port, and achieving the stable supply of oil into the compressor mechanism from the oil supply port.
Abstract:
PROBLEM TO BE SOLVED: To provide an electric compressor that efficiently cools a motor drive circuit unit without increasing cost or making a body casing bigger in size.SOLUTION: The electric compressor includes an intake passage 61 provided at a part corresponding to a motor drive circuit unit 101, and through which a refrigerant for cooling the motor drive circuit unit flows. The intake passage 61 is provided therein with one or a plurality of cooling fins 72. The cooling fin is provided with a bent portion 72a into which the refrigerant flowing in the intake passage collides. The bent portion 72a is arranged at a position facing a heat generator 105 provided in the motor drive circuit unit 101. The motor drive circuit unit can be of course cooled down by the heat generator installed in the circuit, which makes it possible to configure the motor drive circuit unit using inexpensive electronic components, thus achieving a small and inexpensive electric compressor.
Abstract:
PROBLEM TO BE SOLVED: To solve a problem that, for enabling a stem seal to follow a change of a minute gap at a back face of an end plate of an orbiting scroll to quickly float the stem seal just after starting and stabilize performance, a stem seal spring has to be arranged at a lower part of the stem seal.SOLUTION: A scroll type compressor comprises a fixed scroll 9 and an orbiting scroll 10, has a support part provided in an axial direction via the minute gap on the back face of the orbiting scroll 10 end plate, and has a stem seal 51 provided for slidably sealing and partitioning the minute gap so that discharge pressure of a compression mechanism acts on a central side of the back face of the orbiting scroll 10 and proper intermediate pressure between the discharge pressure and intake pressure acts on the outer side of the same. In the scroll type compressor, the stem seal 51 is formed in a shape also having a spring characteristic followable to a change of the minute gap.
Abstract:
PROBLEM TO BE SOLVED: To prevent an Oldham ring and a main bearing member from contacting with each other near a key groove, vibrating, and increasing operation noise due to reception of a pressing force from an orbiting scroll.SOLUTION: In a scroll compressor, an orbiting scroll 12 is provided between a main bearing member 19 and a stationary scroll 11, the stationary scroll and the orbiting scroll are meshed to each other such that spiral wraps thereof inwardly face each other, an Oldham ring 26 is arranged between the main bearing member 19 and the orbiting scroll, and a key part 26a of the Oldham ring is inserted into a key groove 19a of the main bearing member. Recessed parts 26c are formed in a slidable surface part of the Oldham ring near the key part which faces a part near the key groove of the main bearing member 19. Thus, contact and vibration between the Oldham ring 26 and the main bearing member 19 which are caused near the key groove 19a can be prevented, and the scroll compressor with low noise is inexpensively provided.
Abstract:
PROBLEM TO BE SOLVED: To provide a motor-driven compressor with a built-in inverter, preventing degradation of the maximum cooling capability, even if suction pressure losses associated with an inverter cooling occur, and carrying out an operation with high efficiency. SOLUTION: The motor-driven compressor with the built-in inverter is equipped with: a compression mechanism section for performing suction, compression and discharge of fluids; a body casing that incorporates an electric motor for driving the compression mechanism section; an inverter case that incorporates an inverter for driving the electric motor; and an inverter cover for enclosing the inverter case, wherein a rear surface of installation wall of the inverter is cooled by providing a suction passage of coolant. A sub-suction passage communicated with the suction passage from a geometric compression starting point of the compression mechanism section is installed to face a compression chamber. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a scroll type compressor capable of preventing the occurrence of wearing and seizing of a sliding surface between a fixed scroll and a moving scroll without lowering compression efficiency.SOLUTION: A scroll type compressor includes a spiral bottom plate 40 inserted between a tip end surface of a spiral body 9b of a fixed scroll 9 and a mirror panel 10a of a moving scroll 10. At a part opposite to the bottom plate 40 on the mirror panel 10a of the moving scroll 10, a plurality of counterbore holes 50 having predetermined intervals is formed. Holes 40a communicating the counterbore holes 50 are formed on the bottom plate 40.
Abstract:
PROBLEM TO BE SOLVED: To improve economical advantages/productivity of an electric compressor, to make the electric compressor small-sized and to reduce noise.SOLUTION: Inside a body casing 410, there are provided: an electric motor 5 comprised of a stator 5a and a rotor 5b; and a compression mechanism section 4 driven by the electric motor 5. In the body casing 410, a partition wall section 450 including an accommodation support part 450a of a main bearing 42 is formed integrally by axially dividing the inside of the body casing 410 in a communicating space portion between the compression mechanism section 4 and the electric motor 5. Therefore, high-accuracy machining finish of an inner peripheral surface of the body casing, an outer peripheral surface of a main bearing member or the like and component assembly, such as fitting or press-fitting, requiring high assembly accuracy are not required and furthermore, thickness is not required for a fitting part which is set for fitting or press-fitting. Thus, there can be provided an electric compressor which is excellent in economical advantages/productivity, is small-sized and reduces noise.