34results about How to "Reduce oil discharge" patented technology

An oil pump rotor includes an inner rotor formed with n (n: a natural number) external teeth, and an outer rotor formed with n+1 internal teeth which are in meshing engagement with each of the external teeth. And the oil pump rotor is used in an oil pump that includes a casing having a suction port for drawing in fluid and a discharge port for discharging fluid and conveys the fluid by drawing in and discharging the fluid due to changes in volumes of cells formed between surfaces of the internal teeth and surfaces of the external teeth during rotations of the rotors under meshing engagement therebetween. And the tooth profile of the external teeth of the inner rotor is formed by a deformation in the circumferential direction and a deformation in the radial direction applied to a profile defined by a mathematical curve with the deformation in the circumferential direction is applied while maintaining the distance between the radius (RA1) of an addendum circle (A1) and the radius (RA2) of the tooth groove circle (A2).

An object of the present invention is to promote oil separation in a sealed container, thereby decreasing the amount of oil discharged to the outside of a compressor. The compressor comprises discharge hole provided at position facing the end surface of a rotor and through which a compressed refrigerant from first and second rotary compression elements is discharged into the sealed container; and a refrigerant flow path which is extended from a space surrounded with a coil end of a stator projecting from the end surface of the rotor to a rotary compression mechanism side to a space of an air gap between the rotor and the stator, to guide the compressed refrigerant discharged through the discharge hole to an electromotive element opposite to the rotary compression mechanism side. The outlet of this refrigerant flow path opposite to the rotary compression mechanism side faces the inner wall surface of the sealed container, and the volume of a space between the inner wall surface of the sealed container and the electromotive element is 1.5 times or more and 15 times or less that of a space between the rotary compression element and the electromotive element.

The invention discloses an oil-gas separated-type balancing block which is internally provided with a channel, wherein the channel penetrates through two end surfaces of the balancing block and is communicated with the outer side wall of the balancing block. By adopting a compressor equipped with the balancing block provided by the invention can separate refrigerating machine oil from gas refrigerant in the operation process, thus the oil discharge amount of the compressor is reduced, not only can the amount of refrigerating machine oil in the shell of the compressor be ensured, the service life and dependance of the compressor are improved, but also the heat transfer effect and energy efficiency of an air conditioner can be improved.

The present invention provides an oil return control method, system, air conditioner and computer-readable storage medium, the method includes the step: S1, when the outdoor ambient temperature package detects that the temperature is <T for 30 seconds continuously, T is taken as -15°C ~0°C, when some indoor units start, the outdoor unit receives the indoor unit start command, and the solenoid valve SV2 starts immediately; S2, after the power-on self-check, the compressor rises to Fn1 at the frequency increase rate V1, and maintains at the frequency Fn1 for t1 seconds, Then reduce the frequency at the ramp-up rate of V2 and maintain it for t2 seconds according to Fn2, then increase the ramp-up rate to Fn3 at the ramp-up rate of V3, and then perform automatic operation according to the normal startup platform; After the signal, after t3 seconds, the opening is adjusted to the number of Q1 steps; S4, after the start-up of the air conditioner is completed, the compressor, the solenoid valve SV2 and the electronic expansion valve of the internal unit are not turned on, and the electronic expansion valve is normally adjusted. The oil return control method of the present invention, The system, the air conditioner and the computer-readable storage medium can realize rapid oil return in the low-temperature start-up stage.