124results about How to "Increased energy loss" patented technology

A system for adjusting resonant frequencies in a linear compressor comprising, in the interior of a shell: a linear motor: a cylinder; a piston reciprocating inside the cylinder; and an actuating means operatively coupling the piston to the linear motor, said system comprising: a detecting means to detect a load imposed to the linear motor, in an operational condition of the latter related to the gas pressure in the discharge thereof; and a frequency adjusting means operatively associated with the detecting means and with the resonant assembly, in order to define, as a function of said operational condition, a frequency adjustment, by varying at least one of the values related to the mass of the resonant assembly and to the average stroke of the piston, to a value of the mechanical resonance frequency corresponding to the electrical supply frequency.

A process for treating a metal sulphide concentrate which includes the steps of: a) roasting the concentrate to reduce the sulphide content of the concentrate, to a negligible value and b) melting the concentrate, under reducing conditions, in an electrically stabilized open-arc furnace, in particular a DC arc furnace.

A system for space heating or cooling a heated space includes a heat pump including a refrigeration circuit for transferring heat between a heat source and a heat load for heating and cooling operations. A controller controls the heat pump to perform the heating and cooling operations. A user interface receives user inputs, wherein the user inputs include an indication of discomfort based on temperature. The controller creates a profile for a minimum comfortable temperature level and a maximum comfortable temperature level, and the controller controls the heat pump to perform the heating and cooling operations in accordance with the profiles for the minimum and maximum comfortable temperature levels. The controller may generate an optimized heat demand plan in accordance with predictions of outdoor and indoor temperature, cost, and demand. The plan is optimized to cost-effectively maintain the temperature of the heated space within the comfortable temperature range defined by the profiles.

A medical device in cardiac surgery for replacement of the diseased native heart valves in humans increases thromboresistance of heart valve prosthesis. A heart valve prosthesis comprising an annular housing with the inner surface defining the blood flow I through the valve prosthesis and leaflets mounted within the annular housing with the possibility to pivot around the reference axis between an open position which allows the passage of the direct blood flow I, and a closed position which restricts the blood backflow II. Each leaflet has an upstream surface facing the direct blood surface I, a downstream surface facing the blood backflow II, a coaptation surface, and a side surface. Console projections radially oriented are provided at the inner surface of the housing, and each leaflet has a slot which corresponds to the projection. The inner surface of the housing is mainly cylindrical, and the downstream surface of each leaflet is in the form of the crossing cylindrical and conical surfaces. The upstream surface of each leaflet is in the form of the cylindrical surface. Higher thromboresistance of the heart valve prosthesis is achieved through elimination of the elements which introduce disturbances into the blood flow and reduction of the number of hinged joints.

A severe service condition pressure reduction valve that is resistant to damage by debris carried by high-pressure process fluid stream and operates at acceptable noise levels includes a first stage annular member in the form of a tube or sleeve that is closely fitted into the axial annular opening of a disk stack trim or drag valve, the first stage member having a plurality of radial openings extending through the wall of the tube or sleeve that are aligned with, and correspond in radial and axial or longitudinal spacing to the flow paths in the disk stack valve. The external surface of the first stage member is provided with axially-spaced circumferential raised areas or rings that engage the internal surface of the disk stack annulus to prevent axial flow along the exterior surface of the sleeve.

If a hydraulic system has several modes of operation, in particular a mode with a high pressure demand (II) and a mode with a high fluid flow demand (II), the hydraulic fluid pump has to be built with an accordingly high fluid flow output. Such a pump is expensive. Therefore it is suggested, to provide two pumps. I.e. a controllable main pump (2) is provided, which supplies the hydraulic consumer (6) during phases (I) of high pressure demand. During phases (II) of high fluid flow demand, normally, relatively low pressures are sufficient. Therefore, it is suggested to provide a parallel boost pump (9), which supplies the hydraulic consumer (6) in addition to the high pressure pump (2), if a high fluid flow is needed. Excess fluid flow output is avoided by controlling the fluid output flow of main pump 2.

In a drive assembly of the invention, a first catch tank is provided above a casing that keeps lubricating oil accumulated in a bottom thereof for immersion of part of a rotor of a motor MG3 and of part of a differential ring gear of a differential gear. The first catch tank temporarily keeps the lubricating oil scooped up from the bottom of the casing by the rotation of the differential ring gear. The lubricating oil kept in the first catch tank is flowed down by the force of gravity and is fed to peripheral bearings. A second catch tank is arranged to temporarily keep the lubricating oil scooped up from the bottom of the casing by the rotation of the rotor of the motor MG3. The lubricating oil kept in the second catch tank is flowed down by the force of gravity and is fed to peripheral bearings. This arrangement desirably shortens oil paths connecting the respective catch tanks to the peripheral bearings and ensures smooth supply of the lubricating oil to all the peripheral bearings and other oil-requiring sites.

A golf club includes a club head and a club shaft attached to the club head. A plurality of bends which are spaced from one another are formed in the club shaft to define a straight first club shaft segment, a second club shaft segment adjoining and connected to the first club shaft segment extending upwardly from and laterally relative to the first club shaft segment, and a third club shaft segment adjoining and connected to the second club shaft segment and extending upwardly from the laterally relative to the second club shaft segment. The first club shaft segment and the third club shaft segment extend along spaced imaginary lines and the club head is closer to the golfer swinging the golf club than would be the case if the club shaft were straight along the length thereof.

A tread comprises a central zone with a width of between 70% and 80% of the width W of the tread. The central zone comprises one or more circumferential bands, each being delimited by two grooves of a width greater than or equal to 2 mm, and each comprising a contact surface intended to come into contact with the ground and a plurality of transverse sipes distributed evenly in the circumferential direction. Each sipe has, on the contact surface, a width less than 2 mm so as to define a mean circumferential void ratio, which is between 0.5 times and 1.5 times the ratio between a mean thickness (E) of the circumferential band to a mean circumferential radius of curvature (Rc) of the said circumferential band. The sipes divide the circumferential band into a succession of blocks, each having two edge corners intersecting the contact surface of the circumferential band, at least one of the edge corners of said block extending radially by an inclined part forming a chamfer. This inclined part connects the edge corner to a lateral wall of the block so as to generate an offset in the circumferential direction between the said edge corner and the lateral wall of the block.

We describe a method of controlling turn off time delay of a switching device of a switch mode power converter (SMPC). The SMPC has an inductive component comprising an input winding coupled to receive power from an input; and a switching device to, when on, conduct input winding current. In embodiments the method comprises applying turn on and turn-off signals to the switching device; applying at least one turn off signal, to initiate turning off of the switching device, and detecting a sensing signal from a further winding of the inductive component, inductively coupled to the input winding, to thereby indicate an end of a turn off time delay or duration. The method controls the turn on signal for a subsequent switching cycle of the SMPC device to regulate the turn off delay time.

During the travel of a vehicle, the oil level of lubricating oil is lowered due to the suction by at least a first oil pump and the scraping-up by the rotation of a differential ring gear and so on. In particular, until the oil level becomes equal to or lower than an upper end of a first partition wall, the oil level is lowered due to both the suction by the first oil pump and the scraping-up by the rotation of the differential ring gear and so on, and therefore, a region, that is immersed in the lubricating oil, of the differential device rapidly becomes smaller. Since a suction port of the first oil pump is disposed in a second oil storage portion, the oil level in the second oil storage portion during the travel of the vehicle can be adjusted independently of that in a first oil storage portion.

A slurry pump impeller which includes a front shroud and a back shroud each having an inner main face with an outer peripheral edge and a central axis, a plurality of pumping vanes extending between the inner main faces of the shrouds, the pumping vanes being disposed in spaced apart relation. Each pumping vane includes a leading edge in the region of the central axis and a trailing edge in the region of the outer peripheral edges of the shrouds with a passageway between adjacent pumping vanes. Each passageway has associated therewith a discharge guide vane, each discharge guide vane being disposed within a respective passageway and located closer to one or the other of the pumping vanes and projecting from the inner main face of at least one of the or each shrouds.

Problems to be solved: to provide a coil device and a magnetic field generating device with reduced energy loss that are suitable for use in the thermotherapy method.

Means for solving the problem: a coil device according to the present invention can be used in a magnetic field generating device for the thermotherapy method in which a magnetic flux is irradiated to the patient to selectively heat a specific portion of the patient. Said coil device is a bread-shaped coil device having a current path extending in the shape of a spiral in a substantially same plane, said current path comprising a hollow cylindrical member (10) of a nonmagnetic material inside which a space is formed and a plurality of conductive wires (11, 12) covered with an insulation material on the peripheries thereof. In the present invention, the current path comprising a plurality of conductive wires covered with an insulation material which are arranged in a circle, energy loss caused by the skin effect and energy loss caused by the line capacity can be reduced, making it possible to generate a strong magnetic field. Also, by using the hollow cylindrical member (10), it is possible to easily configure a current path in a predetermined diameter and to inhibit increase in temperature of the coil (3) to avoid fluctuation of the resonance frequency of the resonance circuit. With this, a magnetic field generating device that is suitable for use in thermotherapy, particularly cancer therapy, can be realized.

The invention discloses a wireless sensor network self-adaptation compression method which can achieve energy optimization in the whole network. The method comprises the step of a compression judging process. In the compression judging process, the total energy consumption Ecomp caused when compression is executed and the total energy consumption Euncomp caused when compression is not executed are compared, if the total energy consumption Ecomp is larger than the total energy consumption Euncomp, initial data are not compressed and directly sent out, if the total energy consumption Ecomp is smaller than the total energy consumption Euncomp, the data compression process is executed, the initial data are compressed and then sent out, and if the total energy consumption Ecomp is equal to the total energy consumption Euncomp, the initial data are not compressed and directly sent out or the initial data are compressed and then sent out.

The invention discloses a high-content environmental alcohol ether fuel used for a compression ignition engine, which belongs to the technical field of alcohol ether fuel clean energy. The alcohol ether fuel comprises the following raw materials: methanol or ethanol or a mixture of methanol and ethanol, toluene, stearic acid, hexamethylphosphoric triamide, a nitryl solvent, acetone, fatty acid methyl ester, n-alkane, N-toluidine, plant oil, an alcohol fuel ether stabilizing agent, a catalysis combustion-supporting agent, an anti-knock reinforcing agent, a cetane number regulator, an eduction agent, an alcohol fuel recognition agent, an alcohol fuel rubber/plastic part corrosion and swelling inhibitor, an alcohol fuel metal corrosion inhibitor, an antioxidant anti-gum inhibitor, a metal deactivator, a corrosion inhibitor, an antistatic agent, a purification dispersant, an anti-wear repair agent, and an alcohol fuel sterilizing agent. The high-content environmental alcohol ether fuel has the advantages of stable performance, strong power, full combustion, good anti-knock property, good acceleration speed, easy starting, no air resistance, and low fuel consumption, and is especially suitable for the compression ignition engine.

A manufacturing method for a fuel cell includes: preparing a membrane electrode gas diffusion layer assembly; preparing a support frame having an electrical insulating property and an ultraviolet permeability; preparing a separator; bonding the membrane electrode gas diffusion layer assembly and the support frame to each other via a first ultraviolet curable adhesive; and, after the membrane electrode gas diffusion layer assembly and the support frame are bonded to each other, bonding the support frame and the separator to each other via a second ultraviolet curable adhesive.

The invention belongs to the technical field of organic synthesis, and particularly relates to a phenyl branching luminescent material and an organic electroluminescent device thereof. According to the invention, through fine design of a hole-transport material subjected to branching twisting, a core light-emitting layer material is further selected, and a high-refraction low-absorption covering layer material is introduced, so that compared with the prior art, the device is obviously improved in comprehensive performance such as starting voltage, light emitting brightness, current efficiency,light color and thermal stability, and is obviously improved in performance stability under a state that the device is operated and heat is accumulated.

A control system for a hybrid vehicle configured to reduce frequency of establishing an engine braking force is provided. The control system is configured to operate a first motor as a motor to increase torque of an output member while halting the output shaft of the engine by a brake, and to increase the deceleration torque of the second motor, if a state of charge of the battery is higher than a predetermined threshold level when deceleration of the hybrid vehicle is demanded.