4855results about "Radial flow pumps" patented technology

A portable fan includes: an airflow portion and a display screen. The airflow portion includes an air outlet, the air outlet is disposed surrounding a periphery of the display screen. The display screen has an outer surface at least partially curved; and / or the display screen is configured to display at least one of: a remaining battery power level, a current air speed, a battery power level during charging, and an operating state.

The present invention provides an air purifier including an outer case having a filtering cavity and a driving cavity spaced apart from each other, a filter received in the filtering cavity, a driving fan received in the driving cavity. The outer case has at least one air inlet and an air output. An air hub extends into the driving cavity. The air hub includes a first air drawing frame and a second air drawing frame coaxially formed with respect to the filter. An axial direction of the first air drawing frame is aligned with a longitudinal axis of the driving fan. The second air drawing frame extends peripherally, upwardly and radially from the first air drawing frame into the driving cavity.

The invention relates to an air compressor remote fault diagnosis system and method based on a CNN and a type-2 fuzzy algorithm, and belongs to the field of intelligent recognition, and the system comprises a signal acquisition system, a data transmission system, a remote monitoring system and the CNN and type-2 fuzzy algorithm. According to the system, parameters such as pressure, temperature, rotating speed, vibration frequency and amplitude of the air compressor are monitored in real time through the sensor and transmitted to the server for processing, fault diagnosis and prediction are conducted through the CNN and the type-2 fuzzy algorithm, and the function of remotely monitoring and diagnosing the faults of the air compressor is achieved. In this way, the feature extraction capability can be better improved, so that the classification performance is improved, and the accuracy of fault diagnosis is improved. Meanwhile, when sensor noise causes fluctuation of fault features, the type-2 fuzzy algorithm can adjust a classification decision according to an uncertainty range of a fuzzy membership function, so that interference of noise on fault classification is reduced, and better robustness is achieved.

The invention discloses a steam compressor system and a control method. The system comprises a steam compressor, a controller, a heat exchange device, and a steam inlet pressure detection device, a steam exhaust pressure detection device and a steam flow detection device which are respectively connected with the controller, the heat exchange device internally comprises a gas phase area and a liquid phase area, and the gas phase area is communicated with a steam inlet of the steam compressor through a steam inlet pipeline; the steam inlet pressure detection device is arranged on the steam inlet pipeline; a heat exchange coil and a heating device are arranged in the liquid phase area; an inlet of the heat exchange coil is communicated with a steam outlet of the steam compressor through a steam exhaust pipeline; the steam exhaust pressure detection device and the steam flow detection device are arranged on the steam exhaust pipeline; an outlet of the heat exchange coil extends to the outside of the heat exchange device; and the controller is respectively connected with the steam compressor and the heating device. According to the steam compressor system provided by the embodiment of the invention, the steam heat can be recycled, so that the energy consumption of the steam compressor test is reduced, and the test cost is reduced.

A disk-pack turbine for use, for example, in systems and methods in at least one embodiment for separating fluids including liquids and gases into subcomponents by passing the fluid through a vortex chamber into an expansion chamber and then through at least a portion of a waveform pattern present between at least two rotors and / or disks. The rotors and / or disks having waveform patterns on at least one side. In at least one embodiment, the waveform patterns include a plurality of hyperbolic waveforms travelling around an axial center of the disk with each hyperbolic waveform having a varying diameter along the waveform.

According to the centrifugal compressor, a motor cavity is defined by a shell, and a plurality of pressing wheels are arranged at the two ends of a rotor shaft respectively; in the height direction of the centrifugal compressor, the first medium inlet is located in the lower end of the shell, the second medium inlet is located in the upper end of the shell, the medium outlet is located between the first medium inlet and the second medium inlet, and the first medium inlet, the second medium inlet and the medium outlet all communicate with the motor cavity. Therefore, the multiple pressing wheels are arranged at the two ends of the rotor shaft correspondingly, staged compression of gas can be achieved, the centrifugal compressor can achieve the higher pressure ratio, and the operation efficiency of the centrifugal compressor is improved; according to the centrifugal compressor, the first medium inlet is located in the lower end of the shell, the second medium inlet is located in the upper end of the shell, and the medium outlet is located between the first medium inlet and the second medium inlet, so that the flowing-in and flowing-out positions and the flowing speed of media are reasonable, the cooling effect of the centrifugal compressor can be remarkably improved, and the working performance of the centrifugal compressor is improved.

The invention relates to the field of the centrifugal fan industry, in particular to an impeller with multi-element coupling bionic blades and a centrifugal fan, the impeller comprises a front disc and a rear disc, an exhaust inlet is formed in the middle of the front disc, a plurality of blades are arranged on the rear disc in a surrounding array mode, and the blades comprise long blades and short blades which are evenly distributed at intervals; the long blades and the short blades are all metal plate type single-arc multi-element coupling bionic blades. According to the impeller with the multi-element coupling bionic blades and the centrifugal fan, according to the principle of a bionic flow control technology, the front edge of the long blade adopts a streamline structure characteristic of simulating the outer side edge of a shark tail fin, and the tail edge of the blade adopts a typical arc tooth structure characteristic of simulating the feather front edge of a tenon wing; the common problems of small flow, low pressure, low efficiency and large noise of a centrifugal fan in the prior art are solved.

A noise-reducing air passage device and its components for use in ventilator systems, including a housing with at least one inlet, at least one outlet, an inner wall, and an outer wall. The space enclosed by the inner wall of the housing forms a gas passage including at least one chamber to provide a space for gas accumulation and flow. A blower, the core component to provide positive pressure gas to the device, is secured within one of the at least one chamber. The gas passage also includes a ventilation component to divide the gas and streamline turbulent airflow. The ventilation component is among the noise-reducing components, which also include a support component to provide support and damp vibrations for the blower and an inlet component provided at the inlet.

The invention discloses an energy-saving type magnetic suspension centrifugal water chilling unit, and relates to the technical field of refrigeration, the energy-saving type magnetic suspension centrifugal water chilling unit comprises a magnetic suspension compressor, a variable-diameter throttling mechanism and a heat exchange system, the heat exchange system is fixedly installed on the side face of the outer wall of the magnetic suspension compressor, and the variable-diameter throttling mechanism is fixedly installed on the side face of the outer wall of the heat exchange system; an outlet of the magnetic suspension compressor is directly connected with the heat exchange system through a pipeline, and the reducing throttling mechanism is connected with the heat exchange system through a pipeline. The front-stage closed impeller and the rear-stage semi-open impeller are coaxially connected in series, efficient compression without mechanical contact and oil lubrication is achieved, the problems that a centrifugal compressor is high in energy consumption and large in vibration due to mechanical friction are solved, and the energy efficiency ratio of a unit is effectively increased.

The present invention relates to a self-cleaning fan, a range hood, and a self-cleaning method for a range hood, so as to reduce the impact blind area and improve the oil stain cleaning ability. The self-cleaning fan includes: a fan main body, the fan main body includes a volute and an impeller rotatably disposed in the volute, and a plurality of blades are circumferentially provided on the impeller; a cleaning device, the cleaning device includes a cleaning medium supply member disposed relative to the volute, the cleaning medium supply member has a plurality of spray lines for spraying a cleaning medium along the spray lines onto the blades; wherein the radial perpendicular distances between the plurality of the spray lines of the cleaning medium supply member and the axis of the impeller are different from each other.

The cross-flow fan comprises a flow guide frame assembly, the flow guide frame assembly comprises a fixed plate, a movable plate capable of sliding along the fixed plate is arranged at one end of the fixed plate, end covers are fixed to the tail end of the fixed plate and the tail end of the movable plate, bearings are arranged in the centers of the end covers, and a plurality of fixing lugs are arranged at the top ends of the end covers. According to the cross-flow fan, through the design of the telescopic flow guide frame and the fan blade assembly, the adaptability of the cross-flow fan is remarkably improved; the length of a traditional cross-flow fan is fixed, and the traditional cross-flow fan is difficult to adapt to air conditioner indoor units of different sizes, however, the length of the fan is flexibly adjusted through sliding fit of a fixed plate and a movable plate and axial movement of left, middle and right fan blade units in the design; due to the characteristic, the requirement for customizing various fans due to model difference is reduced, and the production and inventory cost is also reduced; and meanwhile, the stability and the uniformity of the airflow in the adjusting process are ensured through the structures of the arc-shaped flow guide frame and the modularized fan blades.

The invention provides a modularized flow guide type multi-stage pump, and belongs to the technical field of water pumps. The modularized flow guide type multi-stage pump comprises a pump body assembly and a driving motor, the pump body assembly is formed by sequentially connecting a pump head pattern plate, a multi-stage pump shell, a multi-stage flow guide module set and a water retaining sealing cover, the pump head pattern plate is adjustably connected with a connecting end cover of the driving motor through a long screw rod, and the stage number of the pump can be adjusted by increasing or decreasing the number of the flow guide shells. Different lift requirements are met; the multi-stage flow guide module group is mainly composed of a water inlet flow guide shell, a transmission flow guide shell and a water outlet flow guide shell, a closed impeller is arranged in each flow guide shell to form an independent flow guide module, fluid is guided by spiral flow guide blades between the flow guide shells to orderly flow and smoothly transmit, and turbulent flow eddy current loss is reduced; and the water retaining sealing cover realizes double leakage prevention through a stepped sealing flange and mechanical sealing. The high-lift and high-flow pump has the advantages of being easy to disassemble, assemble and maintain, modularized and flexible to adjust, low in energy loss, high in lift, high in flow and high in sealing performance.

A fan apparatus has a housing with an enlarged portion defining at least one air intake and an outlet portion defining an outlet port. The outlet port has a greater width and a lesser height. A blower wheel having a plurality of fan blades is supported in the enlarged portion of the housing for rotation about an axis. A driver is connected to the blower wheel to cause rotation of the blower wheel. A flow straightener assembly is located in the outlet portion of the housing. The flow straightener assembly has first and second fins spaced apart from one another and oriented substantially orthogonal to the axis of the blower wheel. Third and fourth fins are located outside of a respective one of the first and second fins, the third and fourth fins being oriented substantially parallel to the axis of the blower wheel.

The invention discloses a high-precision water pump pressure controller which comprises a pump box, a centrifugal impeller and an adjusting ring set. A bearing frame is arranged on one side of the pump box, a vortex tube and a lining plate are arranged on the surface of the pump box, a rotating speed sensor and a flow speed sensor are arranged on the inner side of the bearing frame and the inner side of the vortex tube respectively, a pressure sensor is arranged on the lining plate, and the output end of the sensor is electrically connected to a data processing module. The centrifugal impeller comprises a wheel seat, a sliding ring, centrifugal blades and a synchronous gear ring, and the centrifugal blades are meshed with a worm gear rack of the synchronous gear ring through transmission tooth grooves. The adjusting ring set comprises a sliding rod, a joint ring and a hand rotating ring and is used for controlling the synchronous gear ring to rotate so as to drive the centrifugal blades to deflect to adjust the exposed area of the centrifugal blades, and therefore dynamic adjustment of pressure output is achieved. The system can realize real-time monitoring and fusion analysis of parameters such as rotating speed, flow velocity and pressure, has the advantages of fast response, high adjustment precision, strong system stability and the like, and is suitable for a precise fluid conveying system.

The invention relates to a high-rotating-speed multi-stage centrifugal pump supported by an air film. Efficient liquid conveying is achieved through unique design. A motor in the driving mechanism is powered on, power is stably transmitted to a pump shaft through a coupler, and a multi-stage impeller is driven to rotate at a high speed. Liquid flows in from the water inlet in the bottom of the pump body, obtains speed energy under the centrifugal force of the impeller and is converted into pressure energy through the multi-stage guide vanes, and efficient conveying is achieved. Gas is stored in a gas chamber in a stator of the air bearing and forms an air film through a multi-stage shrinkage nozzle to support a pump shaft, friction resistance is reduced, and high rotating speed is adapted. The rubidium magnet in the rotor shaft sleeve interacts with the magnetic fluid cavity, so that sealing is enhanced, and adjustment is assisted. The mechanical seal and the oil seal prevent liquid leakage and protect the air bearing. An overflow cavity and an overflow groove adjust pressure in the pump, a water inlet filter screen intercepts impurities, and a pull rod stabilizing structure is reinforced. The centrifugal pump effectively solves the problem of a traditional centrifugal pump at a high rotating speed and has the advantages of high efficiency, stability, long service life and the like.

A subsea fluid processing system includes an electric motor that rotates a shaft on which impellers are fixedly mounted. Diffusors are static and fixed to the pump housing. The electric motor includes a rotor surrounding the shaft and a stator that is filled with a dielectric stator fluid. The stator is sealed or “canned.” The inner surface of the stator which faces the rotor is canned with a canning non-metallic material. The motor, as well as bearings for the rotating shaft are lubricated and cooled with a fluid that in some cases is taken from the process fluid and some alternative source. Alternative sources include: MEG, methanol, treated seawater and untreated seawater.

The invention relates to the technical field of multi-stage centrifugal pumps, and discloses an axial balance assembly which comprises a balance shaft sleeve, a pump shaft and a high-pressure throttling ring connected to a water inlet and outlet section, the balance shaft sleeve is connected to the pump shaft and arranged on the periphery of the pump shaft in a sleeving mode, and the high-pressure throttling ring is arranged on the periphery of the balance shaft sleeve in a sleeving mode. The high-pressure throttling ring and the periphery of the balance shaft sleeve are limited to form a flow blocking cavity, the flow blocking cavity is provided with a high-pressure flow blocking inlet and a high-pressure flow blocking outlet, the high-pressure flow blocking inlet and the high-pressure flow blocking outlet are oppositely arranged at the two ends of the flow blocking cavity in the axial direction of the balance shaft sleeve, and the high-pressure throttling ring is provided with a high-pressure ring end face. The balance shaft sleeve is provided with a high-pressure shaft end face, and the high-pressure choke flow inlet is located between the high-pressure ring end face and the high-pressure shaft end face. According to the axial balance assembly, generation of residual axial force from the high-pressure section to the low-pressure section is reduced, the service life of the water pump is prolonged, and the operation reliability of the water pump is improved.

The invention relates to the field of centrifugal fan industry, in particular to a high-pressure centrifugal fan with a three-dimensional flow impeller, which comprises a volute, the three-dimensional flow impeller and a current collector, the volute is fixedly connected with the current collector, and the three-dimensional flow impeller is arranged in the volute and partially extends into the current collector; the three-dimensional flow impeller comprises a rear disc and a hub, the hub penetrates through the center of the rear disc and is fixedly connected with the rear disc, the rear disc is of a conical structure, and a plurality of blades are arrayed on the rear disc in a surrounding mode. According to the three-dimensional flow fan, the small-size three-dimensional flow impeller is adopted, by increasing the rotating speed of the impeller, it is achieved that the fan in unit volume provides larger gas flow and pressure, the size and weight of the fan are reduced, and the problems that in the prior art, a high-centrifugal fan is generally insufficient in static pressure, low in efficiency and heavy in weight are solved.

The invention relates to an integrated protection magnetic suspension motor and a magnetic suspension vacuum pump, and belongs to the technical field of magnetic suspension motor protection. In the magnetic suspension motor, a front backboard is arranged at the front end of a casing, a tail end cover and a tail end cover are arranged at the rear end of the casing, the casing, the front backboard, the tail end cover and the tail end cover form an installation cavity, and a front protection bearing seat, a front radial magnetic bearing seat, a rear protection bearing seat and a rear radial magnetic bearing seat are installed in the installation cavity. And a seam and a connecting surface between the bearing seats are prevented from being exposed outside. Only one air inlet and one air outlet are formed in the machine shell, leakage points are reduced through the design of the single air inlet and the single air outlet, and protection above IP54 is achieved. Meanwhile, heat dissipation and protection of the motor are considered at the same time through the design.

The invention discloses a centrifugal fan for a cooling tower, and belongs to the technical field of fan equipment, the centrifugal fan comprises a base, the upper end of the base is fixedly connected with a centrifugal fan body, the rear end of the centrifugal fan body is provided with a first motor, the first motor is arranged at the upper end of the base, and the first motor is used for driving the centrifugal fan body; and an air outlet pipe is arranged at the upper end of the centrifugal fan body. Dust is filtered through the arranged filter screen, when the filter screen is cleaned, air flow on one side of the shell can be blocked through the flow separation plate, then the filter screen is cleaned through the cleaning assembly, and therefore during cleaning, dust cannot be subjected to the effect of the air flow and cannot be strongly attached to the upper end of the filter screen, and the dust removal effect is improved. According to the air purifier, dust can be effectively cleaned, the air inlet effect is guaranteed, the filtering assemblies are arranged on the left side and the right side, air can be fed through the other side when one side is cleaned, the machine does not need to be shut down for cleaning, and the using effect is improved.

The invention relates to a compressor and an air compressor system.The compressor comprises a machine shell, an air compressor, an air compressor, an air compressor, an air compressor and an air compressor, the first volute assembly is installed on one side of the machine shell in the axial direction, the first volute assembly is provided with an inner cavity, and a sealing separation part is arranged in the inner cavity; the rotor shaft is rotatably arranged in the accommodating cavity, and part of the rotor shaft is arranged in the inner cavity in a penetrating manner; the first impeller is arranged in the containing cavity and fixedly arranged on the rotor shaft in a sleeving mode. The second impeller is arranged in the containing cavity and fixedly arranged on the rotor shaft in a sleeving mode. Wherein the first impeller and the second impeller are arranged in a back-to-back mode and are in rotary sealing fit with the sealing separation part, the sealing separation part, the first impeller and the second impeller jointly divide the inner cavity into a first compression cavity and a second compression cavity, at least blades of the first impeller are arranged in the first compression cavity, and blades of the second impeller are arranged in the second compression cavity. According to the compressor, the occupied axial space is reduced, and the length of the rotor shaft can be shortened.

An exhaust turbocharger has a housing, in which a shaft is mounted by bearings, which carries a turbine wheel, on the one hand, and a compressor wheel, on the other hand. An electric machine has a rotor and a stator. The rotor is secured on the shaft for conjoint rotation therewith and the stator surrounds the rotor radially on the outside. A sleeve, which supports the rotor radially and axially, is arranged between the stator and the rotor. The sleeve has at least one fluid duct, by way of which a cooling fluid can be guided toward the bearings of the shaft.

The utility model discloses a heat management system based on an air floatation centrifugal compressor and a machine room. The heat management system comprises the air floatation centrifugal compressor, an evaporator, a condenser and a throttling element. An air inlet of the air flotation centrifugal compressor communicates with an outlet of the evaporator, a liquid cooling module is arranged in the air flotation centrifugal compressor to cool a motor of the air flotation centrifugal compressor, an inlet of the liquid cooling module is connected to an outlet of the condenser through a first control valve, and an outlet of the liquid cooling module is connected to an inlet of the evaporator. The evaporator is arranged at the to-be-cooled device to absorb heat emitted by the to-be-cooled device. An inlet of the condenser communicates with an exhaust port of the air flotation centrifugal compressor, and the throttling element is arranged at an inlet of the evaporator and used for conducting throttling expansion on the cooled refrigerant. The heat management system is applied to the machine room, an oil separator and corresponding pipelines are omitted, the overall structure is simple, and meanwhile the heat dissipation efficiency can be improved.

The invention discloses a steam compression system and a control method thereof. The steam compression system comprises a flash tank, at least one stage of steam compressor and a first water circulation pipe. The flash tank is used for enabling the steam generation water heated to the specified flash temperature to be subjected to flash evaporation under the negative pressure condition in the tank to become low-pressure steam; the steam compressor is used for compressing the low-pressure steam into superheated steam of which the saturation pressure is target condensing pressure; and the first water circulating pipe is used for guiding water of a target water source to motors of the steam compressors at all levels and exchanging heat with heat dissipation mechanisms of all the motors, and the water subjected to heat exchange returns to the target water source. Compared with the prior art, heat at the motor is recycled through water circulation, so that the enthalpy value of water for steam generation is increased, energy consumption needed by steam generation is reduced, and the comprehensive energy efficiency of the system is improved.

The low-noise pipeline pump comprises a pipeline body, a motor and conveying propellers, a plurality of pump pipe barrels arranged in one-to-one correspondence with the conveying propellers are arranged on the surface of the pipeline body, a positioning petal is fixedly installed on the inner side of the pipeline body, and a first flow guide ring and a second flow guide ring are arranged on the surface of the positioning petal. The first flow guide ring and the second flow guide ring are located on the inner sides of the pump pipe barrels, and the motor is fixed to the inner side of the pipeline body through the pump pipe barrels. According to the utility model, the flow channel cavity and the bent branch structure are arranged in the pipeline body, so that under the flow guide of the first flow guide ring and the second flow guide ring, the fluid can be guided to smoothly enter the main channel when the fluid flows forwards, and vortex is generated through the bent branch structure when the fluid flows backwards, thereby forming the effect of a Tesla valve; the interference of fluid vortex on the pipeline pump is effectively prevented and avoided, so that the stability of the pipeline pump in various flowing directions is ensured, and the mute effect of the pipeline pump is improved.

The centrifugal compressor provided by the application comprises an impeller, a diffuser and a backflow device. The diffuser comprises a cover plate and a partition plate. The cover plate is installed on the backflow device and forms a containing cavity with the backflow device. The partition plate is accommodated in the containing cavity and divides the containing cavity into a supply air passage communicated with an air inlet. The supply air passage comprises a diffuser passage, a reversing passage and a backflow passage. The reversing passage has opposite first and second side walls. The first side wall is arranged on the inner side wall of the cover plate, and the second side wall is arranged on the outer side wall of the partition plate. The first side wall comprises a first arc surface, a second arc surface and a first plane arranged between the first arc surface and the second arc surface. The second side wall comprises a third arc surface and a fourth arc surface. According to the scheme, the gas in the diffuser passage is smoothly transitioned into the backflow passage, and the loss of gas flow from the diffuser passage into the backflow passage is avoided.

The invention relates to a vertical water-cooling self-priming pump, and belongs to the technical field of fluid conveying. Comprising an upper liquid storage cylinder and a lower liquid storage cylinder which are fixedly connected, a water inlet pipe is arranged on the rear side of the lower liquid storage cylinder, a discharge pipe is arranged on the front side of the lower liquid storage cylinder, a water outlet pipe is arranged on the front side of the upper liquid storage cylinder, and an exhaust valve is arranged at the top of the upper liquid storage cylinder; a water-cooled motor is fixedly arranged in the upper liquid storage cylinder, a multi-stage water pump is arranged in the lower liquid storage cylinder and connected with the water-cooled motor through a coupling assembly, and a supporting assembly is arranged between the water-cooled motor and the inner wall of the upper liquid storage cylinder; an overflow protection assembly is arranged at one end, away from the lower liquid storage cylinder, of the water inlet pipe; the problems that an existing self-priming pump is unstable in installation of a special-shaped motor, high in requirement for the environment of a cooling system, low in lift, unstable in long-time operation and liquid overflows when the self-priming pump is closed are solved.

The invention provides a single-stage centrifugal air compressor. An air path cooling system of the single-stage centrifugal air compressor comprises a first cooling air path and a second cooling air path. The first cooling gas path comprises a shell cooling gas channel; an annular channel; a plurality of bearing seat air inlets; the housing cavity is provided with a main air outlet; the bearing seat air outlet hole is communicated between a fit clearance between a first radial air bearing, far away from the volute, of the motor and a motor stator and the housing cavity; the second cooling air path comprises an air inlet gap between the back of the impeller and the end face of the shell close to the impeller, a fit gap between a second radial air bearing of the motor close to the volute and the main shaft, a fit gap between the stator and the main shaft, a fit gap between the stator and the first radial air bearing and a bearing seat air outlet hole which are communicated in sequence; the air inlet gap communicates with the air outlet side of the impeller. The first cooling air path and the second cooling air path can cool rotor parts at different parts of the motor, so that the cooling effect on the rotor parts of the motor is improved, and the use performance of the motor is ensured.