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

The invention discloses an eccentrically-adjusted variable rotor oil pump. The oil pump consists of a pump body, a pump cover, an outer rotor, an inner rotor, an external tooth eccentric ring, a stop pin, a rack valve component and a safety valve component, wherein the pump body is provided with a rack valve hole for installation of the rack valve component, a safety valve hole for installation of the safety valve component and a limiting stop pin; the rack valve component is arranged in the rack valve hole; the safety valve component is arranged in the safety valve hole; the external tooth eccentric ring is arranged in an external tooth eccentric ring installation hole on the pump body; a limiting arc-shaped groove on the external tooth eccentric ring is aligned with the limiting stop pin on the pump body; the limiting stop pin is inserted into the limiting arc-shaped groove; and an external tooth of the external tooth eccentric ring is aligned with a rack which is arranged on a valve core of the rack valve in the rack valve hole, and is meshed with the rack on the valve core of the rack valve. After being matched with each other, the inner rotor and the outer rotor are arranged in rotor holes of the external tooth eccentric ring at the same time, and then the pump cover is covered on the pump body at a rotor position.

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.

There is desired an oil supply device that can supply an appropriate amount of oil to a vehicle drive device, while suppressing an increase in size of a hydraulic pump, in the case where torque of an internal combustion engine is transferred to wheels with an engagement device controlled to a slipping engagement state. An oil supply device 10 includes a first hydraulic pump 21, a second hydraulic pump 22 driven by a dedicated drive force source 23, a lubrication oil passage 61 for lubricating engagement devices C0 and C1, a first engagement oil passage 51 for controlling the state of engagement of the decoupling engagement device C0, and a second engagement oil passage 52 for controlling the state of engagement of the shifting engagement device C1. In the case where the engagement devices C0 and C1 are controlled to a slipping engagement state, the supply state control section 10 establishes a state in which oil discharged from the first hydraulic pump 21 is supplied to the first engagement oil passage 51 and the second engagement oil passage 52, and in which at least oil discharged from the second hydraulic pump 22 is supplied to the lubrication oil passage 61.

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 (R_A1) of an addendum circle (A₁) and the radius (R_A2) of the tooth groove circle (A₂).

The invention discloses a control method for a refrigerant circulation system. The control method comprises the following steps of adjusting the running parameters of the refrigerant circulation system according to the superheating degree and/or supercooling degree of the refrigerant circulation system in a first running mode, so that the oil discharge amount of the compressor in the period of thefirst running mode is reduced. In the control method for the refrigerant circulation system, the refrigerant circulation system has the first running mode of not carrying out oil return of the compressor, and in the running mode, the frequency of the compressor, the frequency of an outdoor fan, the opening degree of a throttle device, and other running parameters can be adjusted according to thesuperheating degree and/or supercooling degree of an indoor heat exchanger, so that the oil discharge amount of the compressor is reduced, and then carried oil at an indoor side is increased, and a reliable running oil amount for the compressor in the period of the running mode is ensured; and when a user needs to keep a quiet environment, a running module can be switched over to the first runningmode, so that the use comfort of the user is ensured.

An oil baffle disclosed in an embodiment of the present invention includes an oil baffle body, the surface of the oil baffle body facing the rotor is an oil-gas separation surface, and an oil-gas separation surface arranged on the oil baffle body side guide vanes. For the oil baffle provided by the present invention, when the oil baffle rotates together with the rotor, the guide vanes located on the oil-air separation surface of the oil baffle body will rotate together with the oil baffle body, because the turbulence caused by the rotation of the guide vanes The function enhances the rotation strength of the refrigerant flow field and assists the gas circulation, thereby enhancing the separation effect of the oil-gas mixture, reducing the oil discharge of the compressor, and improving the overall performance of the compressor. The invention also discloses a compressor rotor assembly, a compressor and an air conditioner.

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 positions 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, and the outlet of this refrigerant flow path opposite to the rotary compression mechanism side faces the inner wall surface of the sealed container.

The invention discloses a rotary compressor, which comprises a crankshaft of the compressor, a compressing structure part, an upper bearing, a lower bearing and a motor driving part, wherein the crankshaft of the compressor is arranged in a casing and is provided with an eccentric part, the compressing structure part is used for compressing coolant gas, the upper bearing and the lower bearing are respectively arranged at the upper side and the lower side of the compressing structure part, the motor driving part is used for driving the compressing structure part, the upper part of the casing is provided with an upper cover, the crankshaft upwards extends, the upper end of the crankshaft is arranged in a bearing arranged under the upper cover, a cylindrical gas-liquid separator is arranged on the crankshaft arranged between the bearing and a rotor, the diameter of the gas-liquid separator is smaller than that of the rotor, at least one exhaust opening is arranged on the outer peripheral surface of the upper part of the casing, and a filter screen is arranged between the exhaust opening and the gas-liquid separator. The rotary compressor of the invention separates small oil drops carried in gaseous coolants through the gas-liquid separator and the filter screen, and reduces the oil outlet quantity of the compressor.

A rotary-vane vacuum pump comprises a stator and a vaned rotor, the stator partly defining an outlet chamber and including an outlet passage opening to the outlet chamber. The rotor is rotatably sealed to the stator; it has a sealing area to block the outlet passage, and, an unsealing area alignable with the outlet passage by rotation of the rotor to periodically unblock the outlet passage. The disclosed pump offers reduced resistance to lubricant oil discharge from the outlet passage, which results in lower differential pressure between inlet and outlet chambers at the end of the pumping cycle.

A rotor that provides a rotating power to a compressor unit for compressing a refrigerant comprises: a rotor core having formed through-holes (36-1 to 36-6) that have cross sections with a plurality of crotches in a direction away from a rotating axis and through which the refrigerant passes; a first end plate covering a first end surface on which one end of both end portions of the through-holes(36-1 to 36-6) in the rotor core that is on the side closer to the compressor unit is formed; and an upper rotor end plate (33) covering a lower rotor end surface (34) on which the other end of the plurality of holes in the rotor core is formed. The first end plate has formed a first opening portion providing communication between the through-holes (36-1 to 36-6) and an inner space. The upper rotor end plate (33) has formed an upper opening portion (43) providing communication between the through-holes (36-1 to 36-6) and the inner space. The upper rotor end plate (33) has formed protruding portions (44-1 to 44-6 and 45-1 to 45-6) covering each of tip-end portions (36-11 to 36-62) at the ends of each of the crotches of the through-holes (36-1 to 36-6).

The invention relates to a control method for improving oil shortage of a compressor during starting of a water-free floor heating unit and a triple co-generation system thereof. The triple co-generation system comprises a heat pump external unit and a water-free floor heating unit used for indoor heating. The external unit comprises the compressor, an outdoor heat exchanger, an outdoor fan and a first electronic expansion valve. The exhaust end of the compressor is connected with an oil separator in series. An oil return capillary pipe is arranged on a refrigerant pipeline, bypassing the oil separator to the air inlet end of the compressor. A first electromagnetic valve and a first one-way valve are sequentially arranged on the refrigerant outlet side of the oil separator. A second electromagnetic valve used for controlling on-off of a refrigerant is arranged on the refrigerant inlet side of the water-free floor heating unit, and a second electronic expansion valve is arranged on the refrigerant outlet side of the water-free floor heating unit. According to the control method, when the external unit receives a water-free floor heating shutdown command, most of the refrigerant in the system is stored in the floor heating capillary pipe, and the problem of a large amount of liquid return during starting is solved; and when the external unit receives a water-free floor heating starting command, the unit is controlled to be softly started to operate, and oil discharge of the compressor is reduced.

An injection moulding machine with dual-plate mould-locking structure features that its mould-locking pull rod is permanently connected to slide template via locking nut and the other end of said pull rod is integrated with the piston in mould-locking cylinder, so whole assembly can only move left and right. The diameter and length of piston tail are increased, so it can run outside the cylinder to decrease the amount of oil sucked and discharged by mould-locking cylinder. Its advantages are high strength and mould-locking speed, low cost and low energy consumption.

The invention discloses a motor assembly, which comprises an upper cavity and a lower cavity, a rotor is arranged between the upper cavity and the lower cavity, and an air flow passage connecting the upper cavity and the lower cavity is provided on the inner side of the rotor , a main channel is also connected between the upper chamber and the lower chamber. During assembly and operation, due to the adoption of a double-channel structure consisting of an airflow channel and a main channel, the gas discharged from the pump body of the compressor passes directly into the upper chamber through the airflow channel in whole or in part from the lower chamber, and is refrigerated. The refrigerating oil brought to the upper cavity by the agent can quickly return to the lower cavity and the oil pool through the main channel, thus effectively avoiding the accumulation of the refrigerating oil in the upper cavity due to the influence of the air flow during the return process of the refrigerating oil, and effectively ensuring the oil retention of related components. The effect of liquid lubrication, and the oil discharge of the compressor is reduced accordingly. The invention also discloses a compressor using the motor assembly.