73results about How to "Improve compressor performance" patented technology

An external heat exchanger is used to transfer heat from a compressor lubricant to an expanded working fluid, thereby cooling the lubricant. The heat exchanger may also be used to sub-cool condensed working fluid with the same flow of expanded working fluid. A horizontal scroll-type compressor includes an intermediate lubricant sump between a main bearing support and a scroll member. A counterweight on the crankshaft can travel through the lubricant in the intermediate sump to splash the lubricant around. A horizontal scroll-type compressor can include multiple machined surfaces that are utilized to precisely center and align components of the compressor.

A reciprocating compressor comprises a cylinder having a cylinder side gas flow path for guiding refrigerant discharged to the discharge space to an inner circumferential surface of the cylinder and a piston having a piston side gas flow path communicating with the cylinder side gas flow path to distribute and supply the refrigerant guided through the cylinder side gas flow path between the cylinder and the piston. Also, an outlet of the gas flow path is formed in the piston and an inlet of the gas flow path is formed in the cylinder.

PCT No. PCT/JP97/01799 Sec. 371 Date Jan. 28, 1998 Sec. 102(e) Date Jan. 28, 1998 PCT Filed May 27, 1997 PCT Pub. No. WO97/45642 PCT Pub. Date Dec. 4, 1997A scroll compressor (A) includes a barrier wall (25) which divides the internal cavity of a casing (1) into a discharge chamber (22) and a suction chamber (23) and has a discharge opening (25b) for providing the communication of the compartments (22) and (23), a check valve (27) operable to prevent a flow of gas from the discharge chamber (22) into the suction chamber (23), and a scroll compression mechanism (3) which is provided in the suction chamber (23), which a space (36) left between the mechanism (3) and the barrier wall (25), for discharging compressed gas into the space (36). In addition, a valve (31) is provided in the space (36) which has a seal member (32) operable to interrupt the communication of an inner compartment (34) with an outer compartment (35) of the space (36) during the correct operation period while on the other hand providing the communication during the reverse operation period. Without suffering a drop in performance during the correct operation period, frictional heat occurring at the forward end surfaces of involute bodies (10b) and (11b) of fixed and moving scrolls (10) and (11) is positively removed to outside the scroll compression mechanism (3), thereby preventing these end surfaces from undergoing seizing.

A compressor includes a normally open discharge valve assembly for controlling compressed refrigerant flow from the discharge chamber through the compression members. This controlling of flow results in an increased performance for the compressor by reducing recompression volume and the elimination of reverse rotation at shut down. The discharge valve assembly includes a valve seat, a valve plate and a valve stop secured within a recess formed within the compressor with a wave ring retainer. The valve stop and the valve seat include a contoured surface that is engaged by the valve plate when it opens and closes. The contoured surface controls the movement of the valve plate.

A wind energy system includes a vertical-axis turbine and a compressor driven by the turbine. The turbine includes blades supported on a central rotor by respective support arms having an airfoil shape so as to generate a load on the rotor in an axial direction so as to affect the performance of the compressor. The compressor rotor and the turbine rotor can be integrally coupled with one another for rotation together about a common vertical axis to minimize drive transmission losses. A primary and a secondary compressed air driven generators generate respective primary and secondary electricity from a common source of compressed air. The primary generator is controlled by an electrical controller which is powered by the secondary electricity.

A compressor housing is provided with a scroll piece that includes a cylindrical intake port forming section that forms an intake port, a scroll wall surface forming section that forms an air-intake side wall surface of a discharge scroll chamber, and a scroll outer circumferential section that covers an outer circumferential side of the discharge scroll chamber; a shroud piece that includes a cylindrical shroud press fitted section press fitted into the intake port forming section, and a shroud wall surface forming section that forms an inner circumferential side wall surface of the discharge scroll chamber and also forms a shroud surface that opposes an impeller and a diffuser surface; and an outer circumferential annular piece that includes an outer circumferential annular press fitted section that is press fitted inside the scroll outer circumferential section, and an outer circumferential annular wall surface forming section that forms an outer circumferential side wall surface of the discharge scroll chamber.

A sealed scroll compressor for helium having a stationary scroll, an orbiting scroll, and an oil-injection mechanism. The oil-injection mechanism has an oil-injection pipe arranged to pass through a sealed container and connected to an oil-injection port, and the opening of the oil-injection port is arranged at a bottom surface of a groove between ridges formed with the scroll wrap of the stationary scroll in such a manner that a first range of the orbital angle of the orbiting scroll is approximately identical to a second range of the orbital angle of the orbiting scroll, where the oil-injection port is connected to the outer compression chamber while the orbital angle of the orbiting scroll is in the first range, and is connected to the inner compression chamber while the orbital angle of the orbiting scroll is in the second range.

In a scroll structure of a centrifugal compressor, there are provided a radius increase arc portion E in which a radius from the center of a scroll 12 to a scroll centroid P of the cross section of the scroll 12 is gradually increased in any range in a circumferential direction from the start of winding of the scroll, and a radius decrease arc portion F in which the radius is gradually decreased toward a scroll end point Z.

A refrigerant system is provided with an unloader bypass line to selectively unload the compressor and deliver refrigerant from a partially (or fully) compressed location back to a suction port of the compressor. A section of this unloader bypass line is placed in the path of air having passed over an evaporator and towards an environment to be conditioned. This section of the unloader bypass line would contain refrigerant that is at a higher temperature than the refrigerant, which had been delivered into the evaporator by the main circuit. In this manner, this bypass line section will provide the function of reheating the air above the temperature to which it had been cooled in the evaporator to achieve a desired humidity level. Thus, the reheat function is obtained without requiring a dedicated reheat loop, associated components and additional structure. Also, through the refrigerant temperature reduction, compressor reliability and performance are improved. Furthermore, the flow control device may be of an adjustable type (e.g. modulating or pulsating) to achieve variable sensible heat ratios and to cover a wide range of potential applications. Lastly, the bypass line may have extended heat transfer elements allowing heat transfer enhancement between the air and refrigerant.

Disclosed herein is a valve assembly for a variable swash plate compressor. Since an opening hole of a suction reed is enlarged toward a suction port of a valve plate and refrigerant is also introduced into a cylinder bore through the opening hole when the suction port is opened, performance of a compressor may be enhanced by an increase in flow rate.

Discharge valve arrangement applied in a hermetic compressor used, for example, in household refrigeration systems including a valve plate closing an end of a compression cylinder and provided with suction and discharge orifices contained within the inner contour of the axial projection of the compression cylinder, said suction orifice occupying an annular sector external to the axial projection of a discharge orifice and being closed by a flexible suction vane having a bending median portion. The valve plate is provided with a plurality of discharge orifices distributed in at least one of the regions defined externally and internally to the contour of the flexible suction vane, each discharge orifice provided internally to the contour of the flexible suction vane being axially aligned with a respective through opening provided in said bending median portion.

According to the present invention, an air conditioner comprises: a first circulation channel which drives a thermodynamic cycle while normally circulating a refrigerant; a second circulation channel which is branched from an outlet of a condenser of the first circulation channel to recover oil from the refrigerant to a compressor and to cause the refrigerant to pass through a supercooling heat exchanger; and a third circulation channel which is directly branched from an evaporator of the first circulation channel, to recover oil from the refrigerant and send the same to the compressor, and to cause the refrigerant to pass through the supercooling heat exchanger, thereby preventing the wet compression of the compressor to achieve improved reliability of the compressor, and preventing the degradation of heat-exchange performance.