107results about How to "Reduce motor power" patented technology

Air conditioning system controls are optimized for an air conditioning system having a compressor in IC engine vehicles and in hybrid or fuel cell vehicles having electric drive motors by first determining the operating temperature of at least one of the following vehicle components: engine coolant and transmission oil for all types of vehicles, and for hybrid or fuel cell vehicles also determining the operating temperature of inverter coolant and the electric drive motors. At least one operating temperature is then compared to lower and upper temperature limits. If the operating temperature is outside of the temperature limits air conditioner heat load is reduced by at least one of the following steps: increasing cabin air recirculation, reducing cabin blower speed and reducing air conditioner compressor capacity. Subsequent to reducing air conditioner heat load, selected operating temperature or temperatures are monitored to determine if the operating temperature exceeds the upper temperature limit or limits. If the operating temperature or temperatures exceed the upper limit or limits the compressor is shut off.

A superconducting motor which operates in a synchronous mode of operation, can also be operated in an induction mode in the event that the superconducting components of the motor lose their superconducting properties (e.g., due to cooling system failure). The superconducting electric motor includes a rotor assembly having at least one superconducting winding which, in operation, generates a flux path within the rotor assembly, and a support member which supports the at least one superconducting winding. The rotor assembly is configured to operate in a synchronous mode of operation at temperatures in which the superconducting winding exhibits superconducting characteristics and in a steady-state induction mode of operation at temperatures in which the superconducting winding exhibits non-superconducting characteristics.

The present invention relates to an anti-resonance vibration sieve, which belongs to the technical field of vibration machinery. The anti-resonance vibration sieve comprises a sieve box as an upper plasmid, an excitation body as a lower plasmid, a master vibration spring, a vibration generator, an isolation spring, a base, a motor, etc. The sieve box upper plasmid is a working part of the anti-resonance vibration sieve, and the excitation body lower plasmid is a driving part. The excitation body is equipped with the vibration generator. The sieve box and the excitation body are connected by the master vibration spring. The excitation body is located on the base by the isolation spring. The motor is arranged at a motor frame and is connected with the vibration generator by a transmission shaft. The anti-resonance vibration sieve has the advantages that the sieve box of the anti-resonance vibration sieve is provided with the vibration generator, the mass of vibration can be totally reduced by 20 percent to 30 percent, so that the excitation force is reduced, and the motor power is also reduced, thereby being good for saving energy; the master vibration spring is distributed along the direction of a lateral board of the sieve box, and the sieve box bears force uniformly, thereby being good for prolonging the service life of the sieve; the vibration generator is arranged at the lower plasmid, the lower plasmid almost does not vibrate, and the requirement on rigidity and strength can be ensured easily. The noise of the whole machine is reduced obviously.

The invention relates to a portable, handheld work apparatus such as a trimmer, a cut-off machine, a chain saw or the like, having a motor (5, 33) to drive a rotating, exchangeable work tool (13). A control unit (15) serves to control the operation of the motor (5, 33). The control unit (15) determines the rotational speed (n) and/or the power (P) of the motor (5, 33). According to the invention, the motor (5, 33) can be operated in a first operating mode (I) with reduced rotational speed (n₀) and/or power (P₀) and in at least a second operating mode (II) with an increased rotational speed (n₁) and/or power (P₁). In dependence on a release signal, the control uses exclusively the first operating mode (I) for a limited operation and the second operating mode (II) for an expanded operation.

The invention discloses a vertical hydraulic straightening machine and relates to the vertical hydraulic straightening machine with a fixed pressing machine and a movable workbench. The vertical hydraulic straightening machine comprises a rack, the workbench which is mounted at the lower part of the rack and can move on a base, a left slewing mechanism and a right slewing mechanism which are arranged on the upper surface of the workbench, a main cylinder, a pullback cylinder and a portable beam which are mounted on the rack, a press head fixed on the portable beam and two V-shaped supports which are arranged on the upper surface of the workbench. The vertical hydraulic straightening machine is characterized in that four plunger cylinders and four wheels are respectively arranged on the lower surface of the workbench which is positioned at two ends of the workbench, a driving transmission mechanism and a driven transmission mechanism are respectively mounted at two ends of the workbench, and material supporting devices are symmetrically arranged on two sides of the rack and in the positions which are vertical to the length direction of a work piece. The vertical hydraulic straightening machine can solve the problems that the friction resistance between a plate of the workbench and the base is large, the deformation of the work piece is irregular, the center of gravity is unstable, and a steel pipe can lodge during straightening.

Disclosed is a liftable hospital bed, comprising a bedplate base frame (1) symmetrical about a transverse central plane and a longitudinal central plane, wherein two ends of the bedplate base frame (1) are provided with bed leg rods (2), the lower end of the bed leg rods (2) being hinged to a first roller device (3) in contact with the ground and the upper end of the bed leg rods (2) being connected to a second roller device (4), the second roller device (4) being slidable in tracks (5) on the bedplate base frame (1) and the tracks (5) being parallel to a longitudinal axis of the bedplate base frame (1); connecting rods (6) are hinged to the bed leg rods (2); and a turnover mechanism is further provided for changing included angles between the bed leg rods (2) and the bedplate base frame (1) to lift the bedplate base frame (1), the turnover mechanism comprises the connecting rods (6) and a thrust mechanism, end portions of the thrust mechanism drive the connecting rods (6) to rotate via a hinged four-rod mechanism (7), and the connecting rods (6) drive the bed leg rods (2) to turn over relative to the bedplate base frame (1), so that the lifting of the hospital bed is realized.

The invention discloses an axial flow rotor blade. The axial flow rotor blade comprises at least two vanes (3) arranged on a hub (2), wherein each vane (3) is provided with a hole area with a plurality of through holes (4). The vanes (3) are distributed on the hub (2) by taking a rotation central axis as a center at equal or unequal intervals; and the area of a vane outer edge (31) of each vane (3) is the hole area. When the axial flow rotor blade rotates, the hole structure of the adjacent area of each vane outer edge ensures that air on the pressure surface of each vane flows into a suction surface through the through holes, so that kinetic energy of air on the suction surface of each vane is increased, and the growth of a boundary layer is inhibited; eddy noise is effectively reduced, and the voice is more soft and comfortable; and meanwhile, by the hole structure of the adjacent area of each vane outer edge, the weight of the rotor blade and the load of a motor are reduced, and the cost of the rotor blade and the powder of the motor are reduced. The axial flow rotor blade is particularly suitable for an air conditioner outdoor unit.

A DC motor includes a rotor which is mounted in a housing so that it can rotate about an axis. The rotor includes at least one winding to which direct current is applied from the outside in alternating directions via a commutator, which is arranged on the rotor. Brushes are seated on the commutator and are mounted whereupon they can move relative to the commutator while being pushed by spring pressure onto the commutator.

The invention relates to an electric lifting table with a spring balanced design. The electric lifting table comprises a base, an upper tabletop, scissor mechanisms, a lead screw transmission mechanism and an assorted electronic control system, and the lead screw transmission mechanism is arranged between the two scissor mechanisms and comprises a motor, a gearbox, a middle box, a push box, a lead screw, a stroke guide rod and a brake hydraulic cylinder. The electric lifting table is characterized in that a compressed balance spring is arranged on the stroke guide rod. A lead screw transmission mechanism of an existing electric lifting table is reasonably modified, counterweight balance is realized by the compressed balance spring arranged on the stroke guide rod, the balance spring assists the motor to lift up a heavy object when the lifting table ascends, and gravitational potential energy is converted into elastic potential energy to be stored by the balance spring when the lifting table descends, so that purposes of reducing power of the motor and improving integral efficiency are realized.

The invention relates to high-value cycling and reusing techniques of waste polyester and particularly relates to a method for preparing a high-quality fusant from waste polyester textiles. The method comprises the following steps: adding 1-8% of alcohol into the raw material according to the mass of the raw material, and carrying out blending and melt extrusion by virtue of a screw extruder, wherein the melt viscosity of the fusant from the screw extruder is 0.40dl/g-0.50dl/g; and then adding the material into a tempering and viscosity-regulating device, wherein the melt viscosity of the fusant from the tempering and viscosity-regulating device is 0.620dl/g-0.685dl/g. According to the method, by adding a proper amount of glycol, the melt viscosity is increased, meanwhile, the problems that the cycle of a filter is short, and the maintenance quantity of a vacuum system is great are further effectively solved, the production cost is lowered, and the additional value of products is further increased.

The invention relates to the technical field of automatic guided vehicles, in particular to a single-driving and double-direction type AGV. The single-driving and double-direction type AGV comprises a vehicle body, a navigation sensor, a controller, a driving assembly, a first universal wheel set and a second universal wheel set, the navigation sensor and the controller are arranged on the vehicle body, the driving assembly is arranged below the vehicle body, and the first universal wheel set and the second universal wheel set are arranged at the bottom of the vehicle body in a front-and-back opposite mode. The driving assembly is connected with the controller. The single-driving and double-direction type AGV further comprises a directional wheel arranged at the bottom of the vehicle body and a switching mechanism connected with the directional wheel. The switching mechanism is connected with the controller, and the switching mechanism is used for folding or expanding the directional wheel and expands the directional wheel to the rear end of the vehicle body according to the moving direction of the single-drive and double-direction type AGV. According to the single-driving and double-direction type AGV, due to the fact that the directional wheel and the switching mechanism are arranged on the vehicle body, the directional wheel can be expanded to the rear end of the vehicle body according to the moving direction of the AGV, and therefore the AGV can walk stably, the power consumption of a motor is reduced, and the production cost is reduced.

The vacuum freeze drier includes one drying bin, heating shelves inside the drying bin, one water vapor condenser for condensing water vapor from the heated material, and one vacuum pump for vacuumizing. It features that the vacuum freeze drier includes also one vacuum gauge to sense the vacuum degree inside the drying bin, and one frequency converter to receive the output signal of the vacuum gauge and to output variable frequency, with the frequency converter being connected electrically to the vacuum pump. The present invention has the advantages of no aeration to the drying bin during drying, no contamination of the inflated air on the dried material, varying frequency of the vacuum pump motor, and lowered power consumption.

A motor control system for controlling two or more motor groups includes a power converter that receives power from a power source and converts the power to an intermediate power and an intermediate power link coupled to the power converter. The motor control system also includes at least one motor driver coupled to the intermediate power link configured to provide power to one or more motors and a controller coupled to the power converter and the at least one motor driver. The controller is configured to cause the at least one motor driver to limit the amount of power delivered to the one or more motors based on the amount of power that the power converter can produce.

The invention relates to mechanism automatic transmission. It includes variable speed drive, gearshift actuator, and clutch actuator. The gearshift actuator includes electric machine control and gear worm driving joy stick swing and moving driving mechanism, swing and moving place detection mechanism, and gear place mutual interlocking gear. The cluth actuator includes clutch pusher driving mechanism and place detection mechanism. The invention has the advantages of simple structure, low manufacture difficulty, high working efficiency, and reliable operation.

The invention discloses an automatic grain sampler. The automatic grain sampler comprises a longitudinal traveling cart which is arranged on longitudinal traveling tracks, two transverse traveling trolleys which are arranged on transverse traveling tracks of the longitudinal traveling cart, and fiche chain transmission lifting mechanisms which are arranged on the transverse traveling trolleys. The automatic grain sampler is characterized in that: a longitudinal traveling cart reducing motor drives a driving shaft of the cart by a chain wheel, and traveling wheels of the cart which are positioned at both ends of the driving shaft and a driven shaft of the cart are arranged on the longitudinal traveling tracks; the two transverse traveling trolleys have the same structure, a driving sprocket of a transverse traveling reducing motor shaft of one trolley is connected with a driven sprocket of a transverse traveling reducing motor shaft of the other trolley through a trolley chain, and moving rollers of the trolleys are arranged on the transverse traveling tracks; and driving sprockets of fiche lifting reducing motor shafts of the fiche chain transmission lifting mechanisms are connected with driven sprockets of sprocket adjustment shafts of the trolleys through fiche chains, and the fiche chains are fixedly connected with fiches. The automatic grain sampler has the advantages of simple structure, high manufacturing and assembly processability, low cost, high performance-price ratio and the like, and can be operated stably.

The invention relates to an axial flow wind wheel, which comprises more than two blades arranged on a hub, wherein the blades are distributed on the hub at equal intervals or unequal intervals by taking the rotating central axis of the wind wheel as the center. The axial flow wind wheel is characterized in that: the outer edge shape of each blade is in a wave-shaped space curve. When the axial flow wind wheel rotates, gas of the pressure surfaces of the blades flows into the suction surface in different degrees through the wave-shaped outer edges of the blades due to the wave shapes of the outer edges of the blades, so that the pressure distribution of the blades is changed, the kinetic energy of the gas on the suction surface is increased, low-energy fluid can be prevented from accumulating at the annular walls of the blades, large eddy turbulence is destructed, blade tip vortex and trailing edge falloff are effectively refined, the energy strength of the vortex is reduced, and the vortex noise of the wind wheel is restricted, therefore the noise of the wind wheel is effectively reduced, the acoustic quality is softer and more comfortable, meanwhile, the wind wheel weight and the motor load are lightened by wave shapes of the outer edges of the blades, and the wind wheel cost and the motor power are reduced. The invention is especially suitable for an outdoor unit of an air-conditioner.

The invention discloses a dual-drum articulated multirope winding hoisting machine, which mainly consists of a main shaft unit 1, a disc brake 2, a universal coupling 3, a hydraulic station 4, an operation desk 5 and motors 6. The main shaft unit is arranged on and respectively fixed with a bearing support 7, and articulated by the universal coupling, other ends thereof are linked with the motor for carrying out synchronous direct connection drag, the two ends of an assembled braking disc 1.1 are provided with the symmetrical disc brake, the hydraulic station is used for providing brake pressure, and the two motors and the hydraulic station are controlled by the operation desk. The main shaft unit consists of the assembled braking disc, a fixed wound roll 1.2, a plastic lining board 1.3, a rope-retaining board 1.4, the main shaft 1.5 of the fixed wound roll, a rope-adjusting clutch 1.6, a nomadic wound roll 1.7, a left hub 1.8, two halves of brasses 1.9, the main shaft 1.10 of the nomadic wound roll and a right hub 1.11, wherein, the main shafts of the fixed wound roll and the nomadic wound roll are not in the same center line and have an included angle of 5 to 10 degrees. When in working, a container is lifted by two cable wires, thus effectively meeting the lifting needs.

A method is provided for determining fuel blend in a dual fuel mixture including a first and a second fuel in an internal combustion engine. The method includes the steps of measuring multiple engine parameters using sensors during transient cycle operation for a predetermined range of engine loads and fuel blends; using system identification of transient time series of the measurements to determine one or more relevant engine parameters; determining a model for estimation of the fuel blend based on said one or more engine parameters; using the model fur determining a current fuel blend during transient operation using current measured values of the one or more engine parameters, and using the calculated current fuel blend for controlling the amount of dual fuel mixture injected into each cylinder of the internal combustion engine. A vehicle and a computer program product using the method are also provided.