6265results about "Radial flow pumps" patented technology

A portable fan includes an airflow portion and a handheld portion. The airflow portion includes rotation air blades and a drive portion that is driveably connected to the rotation air blades. The drive portion is a three-phase motor that is configured to drive the rotation air blades to rotate to generate an airflow. The handheld portion is connected to the airflow portion. A power supply assembly is arranged inside the handheld portion; and the power supply assembly is electrically connected to and supply power to the three-phase motor.

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.

A compressor case having a composition gradient defining a first coefficient of thermal expansion and a second coefficient of thermal expansion that differs from the first coefficient of thermal expansion; and a thermoelectric junction operationally coupled to the composition gradient, wherein the composition gradient is formed of either of a plurality of dissimilar metals or of plastic with fillings or fibers.

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.

A pair of waveform rotors and / or disks for use in a disk-pack turbine used, for example, in systems and methods in at least one embodiment for separating fluids including liquids and gases into subcomponents by passing the fluid 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.

A system and method in at least one embodiment for separating fluids including liquids and gases into subcomponents by passing the fluid through an intake 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. In at least one embodiment, the waveform patterns include a plurality of hyperbolic waveforms axially aligned around a horizontal center of the system.

A pair of waveform disks for use in a disk-pack turbine used, for example, in systems and methods in at least one embodiment for separating fluids including liquids and gases into subcomponents by passing the fluid into an expansion chamber and then through at least a portion of a waveform pattern present between at least two disks. The disks having waveform patterns on at least one side.

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 fluid intake 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.

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.

An ergonomic neck fan comprises two fan shells for wearing around the neck of the user, and a silicone assembly. The interior of each shell is provided with a fan and cavity wall, and each shell comprises a shell body and a shell rear cover. Air guide components are provided inside the shells, and the air guide components cooperate with the cavity walls to divide the interior space of the shell body into an air outlet assembly and a storage cavity. The air outlet assembly comprises a fan cavity for placing the fan, and a horn-shaped air duct. The invention achieves high-speed airflow and efficient transfer, enabling the wind pressure towards the user's face and neck to be stronger and adaptable to different body shapes in outdoor and sports scenarios, allowing the user to be cooled by the wind and providing a better cooling effect and lower noise.

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.

Disclosed in the present invention is a delivery pump for a cleaning system using an ice-containing medium. The delivery pump comprises a volute (10), an impeller (20), a diffuser (30) and a rotary shaft (40), wherein the impeller comprises a front disc (21), a rear disc (22) and blades (23); and the diffuser comprises a first side wall (31) and a second side wall (32). The delivery pump is characterized in that the second side wall comprises an arc-shaped transition portion (33); a backflow channel is formed in the arc-shaped transition portion; the backflow channel comprises a first arc-shaped channel (34) and a second arc-shaped channel (35); the front disc is provided with communication grooves (24); and a plurality of communication grooves are distributed in a circumferential direction, such that part of a liquid in the diffuser flows back into an impeller flow channel outlet portion of the impeller through the backflow channel and the communication grooves. The present invention can effectively reduce pressure fluctuation, pressure loss and vibration, thus improving the hydraulic performance and stability of the delivery pump.

The invention provides a high-pressure centrifugal pump, and belongs to the technical field of pumps. The technical problem that a mechanical seal in an existing high-pressure centrifugal pump is prone to damage is solved. The high-pressure centrifugal pump comprises a pump body, a bracket and a pump shaft, a mechanical seal is arranged on the pump shaft, one end of the pump shaft is fixedly connected with an impeller, a shaft sleeve is fixedly connected to the pump shaft in a sealing mode, and a pump cover is arranged outside the shaft sleeve in a clearance sleeving mode and comprises a first sealing installation part, a second sealing installation part and an installation connection part. The mounting through hole is in clearance fit with the periphery of the shaft sleeve, a first sealing piece is arranged between the periphery of the second sealing mounting part and the inner periphery of the pump body, an elastic piece is arranged between the second sealing mounting part and the bracket, and an axial clearance is formed between the end, close to the impeller, of the mounting connecting part and the impeller; one end of the mechanical seal is fixedly connected with the first seal mounting part, and the other end is fixedly connected with the shaft sleeve. The abrasion of the mechanical seal can be reduced, and the service life is prolonged.

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 axially aligned around a horizontal center of the system.

A centrifugal compressor includes a rotary shaft, an electric motor, an impeller, a thrust bearing, and a housing having a passage that includes a motor cooling passage and a bearing cooling passage. The housing includes an inner housing and an outer housing. The motor cooling passage is defined by the inner housing and the outer housing. The passage includes a branching passage through which cooling fluid is divided and flows into the motor cooling passage and the bearing cooling passage and a joining passage through which the cooling fluid flowing through the bearing cooling passage joins the cooling fluid flowing through the motor cooling passage. The motor cooling passage includes a guide wall that guides the cooling fluid flowing through the motor cooling passage.

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.

An ergonomic neck fan comprises two fan shells for wearing around the neck of the user, and a silicone assembly. The interior of each shell is provided with a fan and cavity wall, and each shell comprises a shell body and a shell rear cover. Air guide components are provided inside the shells, and the air guide components cooperate with the cavity walls to divide the interior space of the shell body into an air outlet assembly and a storage cavity. The air outlet assembly comprises a fan cavity for placing the fan, and a horn-shaped air duct. The invention achieves high-speed airflow and efficient transfer, enabling the wind pressure towards the user's face and neck to be stronger and adaptable to different body shapes in outdoor and sports scenarios, allowing the user to be cooled by the wind and providing a better cooling effect and lower noise.

The invention in at least one embodiment includes a system for treating water having an intake module, a vortex module, a disk-pack module, and a motor module. In at least one embodiment, a water system includes vortex housing having an interior wall defining a vortex chamber in fluid communication with the expansion chamber of the disk-pack turbine and inlets into the vortex chamber, and the vortex chamber having an upper section with a bowl or modified concave hyperbolic shape into which fluid is received from the inlets and a lower section with a conical or funnel shape with a steep vertical angle of change that opens into expansion chamber. In at least one further embodiment, the disk-pack module includes a disk-pack turbine having a plurality of disks having at least one waveform present on at least one of the disks.

A tangent touching a positive pressure surface (47) of a predetermined wing (4) from a plurality of wings (4) and passing through a trailing edge (45) of the predetermined wing (4) is defined as the first tangent (TL1). A virtual circle (C1) is centered at the midpoint of a rotation axis (CL) and passes through the trailing edge (45). A tangent tangent to the virtual circle (C1) and passing through the trailing edge (45) is defined as the second tangent (TL2). Among a plurality of angles defined between the first tangent (TL1) and the second tangent (TL2), an angle that is in front of the first tangent (TL1) in the direction of rotation and is located on an outside side of the virtual circle (C1) relative to the second tangent (TL2) is defined as the exhaust angle.When considering a change in the outlet angle at each of a plurality of locations arranged axially along the trailing edge (45), the trailing edge (45) has at least one inflection point (POI) at which the outlet angle changes to an increase or decrease. At least one of the outlet angles (θ3) measured at a corresponding adjacent location of the plurality of locations next to a main plate (3) along the trailing edge (45), and the outlet angle (θ1) measured at a corresponding adjacent location of the plurality of locations next to a cover (2) along the trailing edge (45), is smaller than the outlet angle (θ2) measured at a corresponding location of the plurality of locations where the outlet angle is largest among the plurality of locations arranged axially along the trailing edge (45).

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.

A disk-pack turbine includes two disks each having a waveform surface and a second surface, the waveform surfaces face each other and have an axially centered waveform pattern, at least one disk includes an axially centered opening passing from the second surface to the waveform surface, said disks define an expansion chamber including the at least one opening and a disk chamber between said disks from the expansion chamber to a periphery of said disks. The waveform pattern includes at least one waveform that has an amplitude that varies in a radial direction and said waveform pattern maintains or increases a number of peaks for each level of waveforms progressing out from the inner most waveform about said axial center to said periphery where the increase is by a multiplier of 2 to 8. The second surfaces have a slight parabolic shape or are flat.

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 utility model provides a blade for a centrifugal fan, a double-suction centrifugal impeller applying the blade and the fan. The blade comprises a suction surface wall, a pressure surface wall, a front edge, a rear edge, a convex air inlet part and a concave air outlet part, the suction surface wall and the pressure surface wall are arranged back to back and extend in the length direction of the blade firstly and then extend between the front edge and the rear edge; the protruding air inlet part is formed in the mode that the front edge part of the blade protrudes towards one side of the suction surface wall, the concave air outlet part is formed in the mode that the rear edge part of the blade protrudes towards one side of the pressure surface wall, and the protruding air inlet part and the concave air outlet part are connected in the direction from the front edge to the rear edge. In the length direction of the blade, the convex air inlet part is of a structure with high middle and two low sides, and the concave air outlet part is of a structure with low middle and two high sides; in the direction from the front edge to the rear edge, the middle height of the convex air inlet part is in a decreasing trend; and in the direction from the rear edge to the front edge, the middle height of the sunken air outlet part is in a decreasing trend.