52results about How to "Reduce air pulsation" patented technology

The invention discloses a novel interstage air supplementing device of a multi-stage compression centrifugal type refrigeration compressor. The air supplementing device is characterized in that a second-stage exhaust volute (19) is arranged in a casing (1); a first-stage suction guiding ring (11), a first-stage impeller (5), a second-stage impeller (10) and an impeller distance ring (8) are arranged on a transmission shaft (9); a second-stage suction passage (15) is arranged in an interstage baffle (3); a first-stage exhaust passage (14) is formed between a first-stage diffuser (2) and the interstage baffle (3) in the casing (1); a second-stage exhaust passage (17) is formed between the interstage baffle (3) and the second-stage impeller (10); the casing (1), the first-stage diffuser (2) and the interstage baffle (3) commonly form an air supplementing and supplying passage (20); a straight slot section (18) is formed between the first-stage diffuser (2) and the interstage baffle (3); and an inter-stage sealing ring (7), a first-stage wheel cover sealing (4) and a second-stage wheel cover sealing (6) are arranged. By the device, the interstage air can uniformly enter a reflux apparatus of the compressor; the efficiency of the compressor is improved; and the airflow noise of the compressor is reduced.

The invention provides a rotating inclined disc type compressor. A gas suction expansion portion is arranged in the middle of a rear cover exhaust cavity. A rear cover gas suction passageway communicated with a gas suction opening is located inside the gas suction expansion portion. The outlet end of the expansion portion is communicated with a gas suction pressure stabilization area. A main expansion passageway communicated with the gas suction pressure stabilization area is arranged in a rear cylinder. The main expansion passageway is communicated with a rear cylinder gas suction passageway through auxiliary expansion passageways. The rear cylinder gas suction passageway is communicated with a rear cover gas suction cavity and a crank cavity. A front cylinder gas suction passageway communicated with the crank cavity is formed in a front cylinder. The front cylinder gas suction passageway is communicated with a front cover gas suction cavity of a front cylinder cover. Gas refrigerating fluid simultaneously enters the rear cover gas suction cavity of the rear cylinder cover, the crank cavity and the front cover gas suction cavity of the front cylinder cover after passing through the auxiliary expansion passageways in the rear cylinder in the gas suction process. The gas refrigerating fluid is sucked through the auxiliary expansion passageways step by step, and therefore the sucked gas refrigerating fluid is made more stable, and gas pulsation and noise are effectively reduced.

The invention relates to a double-cylinder rotary compressor. The rotary compressor comprises an outer air cylinder, an ellipse rotor, and an inner air cylinder which are concentrically installed, wherein an inner short shaft of the ellipse rotor is equal to the outer diameter of the inner air cylinder, and an outer long shaft of the ellipse rotor is equal to the inner diameter of the outer air cylinder; the external surface of the ellipse rotor and the inner wall surface of the outer air cylinder are tangent at any kinetic instant, the internal surface of the ellipse rotor and the outer side wall of the inner air cylinder are tangent, the inner air cylinder and the outer air cylinder are respectively provided with two pairs of slip sheets; the inner air cylinder is provided with two pairs of air inlet cavities and exhaust cavities; crescent volume is divided into two pairs of air inlet (liquid) cavities and compressing, exhaust (liquid) cavities by the inner air cylinder and the outer air cylinder so as to form four pairs of corresponding working volumes; and the inner air cylinder and the outer air cylinder are respectively provided with four pairs of air inlet ports and exhaust (liquid) ports. The double-cylinder rotary compressor provided by the invention has the advantages of high efficiency, no vibration, small volume, uniform stressing of a main shaft, small gas pulsation, simple structure, is stable in operation, and eliminates unbalanced force caused by rotation; and the double-cylinder rotary compressor can be used in different gas compressors, fluid pumps and vacuum pumps.

The invention provides an exhaust noise reduction structure, a compressor and refrigeration equipment. The exhaust noise reduction structure is used for exhaust noise reduction of the compressor and comprises an air cylinder seat, an outer ring silencer, an inner ring silencer and a silencing cover. An exhaust channel is formed on the air cylinder seat. The outer ring silencer is arranged on the air cylinder seat, the outer ring silencer is of a cylindrical structure, a first communicating structure is formed on the outer ring silencer, and the first communicating structure communicates with the exhaust channel; the inner ring silencer is of a cylindrical structure, the inner ring silencer and the outer ring silencer are eccentrically arranged, the inner ring silencer is mounted at the inner side of the outer ring silencer, a second communication structure is arranged on the inner ring silencer, the second communication structure is communicated with the exhaust channel, silencing cavities are formed at the inner side and the outer side of the inner ring silencer respectively, and the silencing cavities are communicated with the exhaust channel; and the silencing cover is used for covering the outer ring silencer and the inner ring silencer. Turbulence of high-pressure gas of the compressor is effectively reduced in a limited space through the novel exhaust noise reduction structure, pressure pulsation is more stable, the silencing frequency band is widened, and the purposes of vibration reduction and noise reduction are achieved.

The invention provides an exhaust system design method applied to high-pulsation-resistance exhaust of a two-cylinder piston engine, reduces the impact load suffered by a pressurizer during working, prolongs the working reliability of the pressurizer, and prolongs the service life. The method designs two aspects of contents: a pneumatic principle and a structure; the design of pneumatic principle aspect aims to reduce the pressure pulsation of air currents in an exhaust system pipe; the main design method determines structural design parameters of the exhaust system through the pressure wave analysis of the exhaust pipe, and corrects the same; and meanwhile, a high-pulsation-resistance bearing is adopted to reduce vibration under high-temperature and high-speed airflow impact of a turbocharger.

The invention provides a compressor and an air conditioner with the same. The compressor comprises a compressor body; the compressor body is provided with a gas vent; a first tooth space volume is formed between first engaging teeth and second engaging teeth of a first rotor; a second tooth space volume is formed between third engaging teeth and fourth engaging teeth of a second rotor; when the first tooth space volume is located in a first critical exhaust state, the projection of the second engaging teeth on the cross section, perpendicular to the center line of the first rotor, of the gas vent is a first projection face; when the second tooth space volume is located in a second critical exhaust state, the projection of the fourth engaging teeth on the cross section, perpendicular to thecenter line of the second rotor, of the gas vent is a second projection face; and at least one of the part of the first projection face and the part of the second projection face is located on the outer side of the gas vent. The compressor solves the problem that large noise is generated in the exhaust process of a compressor in the prior art.

The invention discloses a dealkylation method for carbon dioxide containing hydrocarbon impurities. The dealkylation method comprises the following steps: (a) preheating of feed gas; (b) a dealkylation reaction; (c) heat exchanging; (d) cooling; and (e) secondary impurity removal. The method is simple in process, convenient to operate, small in heat loss and high in heat utilization rate; and compared with a traditional dealkylation system, used dealkylation equipment is small in occupied area, low in cost, high in economic benefit, capable of realizing secondary dealkylation and good in dealkylation effect, and guarantees the purity of carbon dioxide.

The invention discloses an air conditioning unit and a compressor. The compressor comprises a compression cylinder with an air suction port and an air exhaust outlet, and further comprises a silencing cavity, an elastic part and a slide block; one end of the silencing cavity communicates with the air suction port or communicates with the exhaust outlet or communicates with a compression cavity inside the compression cylinder; the elastic part is arranged in the silencing cavity; one end of the elastic part is fixedly connected with the other end of the silencing cavity; the slide block is fixedly connected with the other end of the elastic part; the slide block is used for dividing the silencing cavity into two parts and can slide along the inner wall of the silencing cavity to compress or stretch the elastic part. When the compressor provided by the invention is applied, the slide block can slide along the inner wall of the silencing cavity to change the volume size between the slide block and one end, far from the elastic part, of the silencing cavity, so that the regulation of the silencing frequency of the silencing cavity is realized, and gas flow pulsation of the compressor in compression, a gas-exhaustion stage or a gas-suction stage is greatly reduced.

The invention discloses an air suction drainage structure of an electric air conditioner compressor for an automobile. A refrigerant working medium enters an air suction opening diversion trench through an air suction opening, inverted-V-shaped diversion clamping blocks achieve the effects of separation and diversion, pressure losses and airflow pulsation on the air suction opening can be effectively reduced, then the refrigerant working medium enters a shell diversion trench and an electric controller cooling grating, then a motor and a compressor electric controller can be fully cooled, it is guaranteed that the motor and the compressor electric controller work at the required environment temperature, and when the cooling working medium passes through a specific drainage passageway, separated oil drops can effectively lubricate a rotating structure. As a whole, the air suction drainage structure has the beneficial effects that the pressure losses and the flow pulsation on the air suction opening can be reduced, and the compressor electric controller and the motor are effectively cooled by fully utilizing the flow state of the refrigerating working medium, and the problems that due to an existing electric compressor cooling structure, the flow state of the refrigerating working medium is disorderly, the pressure losses and pulsation are large, and the refrigerating performanceof the compressor is affected are effectively solved.

The invention provides a chlorine gas magnetic levitation centrifugal compressor. The chlorine gas magnetic levitation centrifugal compressor comprises a base, a motor, a transition mechanism, a magnetic levitation stator set, a piston cavity, a closed combination, a cooling nitrogen gas tank, a control cabinet and a magnetic levitation mover set; supporting legs are arranged at the bottom of thebase; the motor is arranged on the top of the base; the transition mechanism is arranged on the top of the base and is connected with the motor; the magnetic levitation stator set is arranged on the top of the transition mechanism; the piston cavity is arranged on the top of the magnetic levitation stator set; the closed combination is arranged on the top of the piston cavity; the cooling nitrogengas tank is arranged on the top of the base and is connected with the closed combination; the control cabinet is arranged on the side of the top of the base; and the magnetic levitation mover set isarranged in the magnetic levitation stator set. The equipment is simple in structure, easy to operate, high in efficiency, low in cost and favorable for wide popularization.

The invention provides a compressor structure. The compressor structure comprises a compression part which includes a first air outlet. The compressor structure further comprises a valve sheet, a valve sheet limiting piece and an elastic piece; the valve sheet covers the first air outlet; the valve sheet limiting piece is arranged on the compression part and corresponds to the valve sheet in position; the elastic piece is arranged between the valve sheet limiting piece and the valve sheet; and/or, the compressor structure further comprises a shell body, and the compression part is arranged inthe shell body; the shell body comprises an end cover, the end cover is provided with a second air outlet, and the inner surface of the end cover is provided with a noise reduction piece; and the elastic piece is arranged between the valve sheet limiting piece and the valve sheet. According to the compressor structure and an air conditioner comprising the same, low-frequency abnormal noise causedby an air exhaust valve sheet hitting a limiting device is reduced, air exhaust pulsation can be effectively reduced, and accordingly, high-frequency noise is reduced; and medium-high frequency noiseis absorbed, vibration caused by airflow in an air exhaust cavity is reduced, and the sound quality of the whole compressor is improved.

The invention relates to a compressor and a refrigeration system. The compressor comprises a compressor body internally provided with a compression chamber, and a buffering cavity. At least part of airflow exhausted by the compression chamber flows through the buffering cavity and then is exhausted, and accordingly the exhaust noise is lowered. Through the arrangement of the buffering cavity, pulsation of airflow exhausted by the compression chamber can be attenuated, and accordingly the exhaust noise of the compressor is lowered.

The invention provides a compressor and an air conditioner. A static disc and a first silencer are included. The first silencer is arranged on the static disc in a buckled mode. A first channel is arranged on the first silencer, a second channel is arranged on the static disc, the first channel is connected with the second channel to form an air supplementing channel, the air supplementing channelis connected with a compression cavity of the compressor, and a buffer cavity is arranged on a circulation path of the air supplementing channel. By using the compressor of the invention, airflow pulsation formed in the air supplementing channel during air supplementing can be reduced, and then a noise generated during air supplementing is reduced.

The invention discloses a capacity-tube-capacity type gas-flow pulsation attenuator of a compressor. The capacity-tube-capacity type gas-flow pulsation attenuator mainly consists of an accommodating cavity, an interpolated throat tube, an extrapolated throat tube with an adjustable valve opening, and a partition, wherein the attenuator is mounted between the compressor and a pipeline through a flange; the partition is used for dividing the accommodating cavity into two small accommodating cavities; the interpolated throat tube communicates with the extrapolated throat tube for regulating opening of a valve on the extrapolated throat tube, so that cut-off frequency of an acoustic low-pass filter which consists of two small accommodating cavities and a middle connecting throat tube can be changed, and therefore, main excitation of the compressor and gas-flow pulsation wave corresponding to the frequency are greatly reduced, pulsation gas flow in the pipeline tends to be stable, and the problem that a conventional pulsation attenuator only can effectively attenuate gas-flow pulsation in a fixed-rotation-speed compressor pipeline and is poor in pulsation attenuation effect in the variable-rotation-speed compressor pipeline is solved. The capacity-tube-capacity type gas-flow pulsation attenuator can be conveniently mounted at a gas inlet flange and a gas outlet flange of the compressor, and further can be simultaneously used with a Helmholtz resonator or other pulsation attenuators.