692results about How to "Avoid life" patented technology

An LED recessed lighting apparatus has a housing mountable in a recess located behind a recess opening in an architectural structure. A non-vented trim is securable in place over the recess opening. A lens that allows light from the LED to pass through the trim has a fluid-tight internal cavity containing at least the light-emitting portion of the LED. At least a major portion of the heat generated by the LED is carried directly from the LED to the outside surface of said trim by way of a thermal path that includes a first heat sink located substantially immediately adjacent and intimately thermally conductively coupled to the LED, at least one second heatsink supported by and substantially directly thermally conductively coupled to, the inside of the trim, and at least one heat pipe thermally connecting the first heat sink to the second heat sink.

The prevent invention discloses a boneless wiper blade, which mainly consists of a pivot socket, two end ferrules, spring steel sheet and rubber strip, wherein the spring steel sheet is used to support and fix the rubber strip, and the pivot socket, on which the connecting adaptors are installed to connect with wiper arms, is mounted on the center of the spring steel sheet and the rubber strip, with end ferrules mounted at both ends of them. The upper part of the wind-pressure sheathes featuring specially curved surface is designed to prevent the wiper blade from lifting off from the surface of the windshield at highway speeds. The said spring steel sheet is so parabolically designed that the rubber strip can firmly and closely contact the various windshield glasses. Both connecting structures between the connecting adaptor and the pivot socket, and the pivot socket and the spring steel sheet and rubber strip are removable, it is same with the connecting structure between end ferrule and spring steel sheet and rubber strip. In this way, it is easy to assemble, dismount and replace them, and even facilitate use of them. The wiper blade has strong compatibility in that the pivot socket can be mounted with various kinds of connecting adaptors to be compatible with multiple wiper arm configurations.

The invention provides an aqueous acrylate heat-conduction coating material, which adopts an acrylate copolymer emulsion as a base material, adopts alumina, zinc oxide, aluminum nitride, boron nitride, carbon nano-tubes, graphene and other inorganic particles having high thermal conductivity as a heat-conduction filler, and comprises water, an adhesion accelerator and other auxiliary agents. According to the present invention, the aqueous acrylate heat-conduction coating material has advantages of safety, environmental protection, good adhesion and high thermal conductivity, can be coated on the surface of electronic components, light apparatuses and other structures, further has advantages of improvement of heat dissipating efficiency, and prevention of performance reduction, instability, service life shortening and other problems caused by insufficient heat dissipating, and has the wide application prospect.

A furniture automatic resetting type press and rebound mechanism comprises a furniture movable part, a furniture immovable part, connecting elements and a fixed support. The furniture movable part is movably arranged on the furniture immovable part in an opening-closing mode, a press and rebound device, a stretchable resetting device and at least two rotating wheels are arranged on the fixed support, the press and rebound device at least comprises pushing and moving elements, and the stretchable resetting device at least comprises stretchable elements and first elastic elements which are mutually matched in an elastic mode; the pushing and moving elements and the stretchable elements are slidably arranged on the fixed support, the at least two rotating wheels are arranged in a relatively independent mode and rotatably arranged on the fixed support, the at least two rotating wheels are mutually matched in a linkage mode when rotating to a certain position, one of the two rotating wheels is in driving connection with the stretchable elements, and the other one of the two rotating wheels is in driving connection with the pushing and moving elements; and swing elements are arranged on the pushing and moving elements, heart-shaped sliding chutes are formed in the fixed support, the swing elements are arranged on the pushing and moving elements in a swinging mode, and one ends of the swing elements sequentially slide along tracks of the heart-shaped sliding chutes towards one direction when the pushing and moving elements slide.

An APL detection unit detects the APL for each unit field time period of an input video signal, and a light source control data production unit produces, depending on the results of the APL detection, a light source control signal at a minimum level which can stably drive a light source when the APL is 0% up to a predetermined value A1, a light source control signal at a maximum level which can stably drive the light source when the APL is a predetermined value A2 up to 100%, and a light source control signal which dynamically varies depending on the APL when the APL is between the predetermined value A1 and the predetermined value A2, to drive the light source on the basis of the light source control signal. As a result, it is possible to mitigate the lack of a contrast feeling and the occurrence of a floating blackness, as well as to improve the reliability of the light source.

A vehicle power supply device comprises a first battery connectable to a starter motor, a vehicle load, and a generator, a second battery different from the first battery in electric characteristics, a connecting switch connected between the first and second batteries, and connecting the first and second batteries in parallel in an ON state of the connecting switch, and a control circuit controlling the connecting switch. In the ON state of the connecting switch, the generator charges the first and second batteries. The control circuit controls to change to the OFF state of the connecting switch in a state of providing electric power to the starter motor, or in a state of detecting an open condition including an abnormal state of the first battery and/or the second battery, and to hold the connecting switch in the ON state in a normal state in which the open condition is not detected.

Disclosed herein is a bio-signal measurement system for measuring bio-signals and providing relevant health care service. The bio-signal measurement system includes a bio-signal measurement device and a portable terminal device. The bio-signal measurement device is formed in a necklace shape, and is configured to measure various bio-signals, perform signal processing on the measured bio-signals, and send the processed bio-signals through a short-range wireless communication module. The portable terminal device is configured to perform signal processing on the sent bio-signals, store the processed bio-signals, calculate relevant bio-indexes, provide a monitoring service related to the bio-signals, compare the calculated bio-indexes with previously stored bio-indexes, and selectively provide a relevant health care information service.

The invention provides air compressor oil which comprises the following components in parts by weight: 75-94 parts of synthetic hydrocarbon base oil, 5-20 parts of synthetic ester base oil and 1-5 parts of functional additive, wherein the functional additive comprises a purification dispersant, an antiwear agent, a metal deactivator, an antirust agent, an antioxidant, a pour point depressant, a demulsifying agent and an anti-foaming agent. The invention provides a preparation method of the air compressor oil. The preparation method comprises the step of mixing the synthetic hydrocarbon base oil, the synthetic ester base oil and the functional additive at the temperature of 60-80DEG C to obtain the air compressor oil. According to the air compressor oil provided by the invention, the synthetic oil is used as the base oil and the compound type functional additive is added, so that the air compressor oil provided by the invention has low oil sludge property. In addition, the air compressor oil provided by the invention also has the advantages of better thermal oxidation stability, low-temperature fluidity and higher viscosity index, and the use requirement of an air compressor is met.

A C4 two-stage hydrogenation device in catalytic thermal cracking to ethylene, which includes a hydrogenation reactor, a mixer and a feed heater, and its technical points are: the first-stage hydrogenation reactor and the second-stage hydrogenation reactor The inlet ends are connected to feed mixers, the outlet of the first-stage hydrogenation reactor is connected to the reflux tank through the discharge cooler, the outlet of the reflux tank is connected to the inlet of the reflux pump, and the outlet of the reflux pump is connected to the feed heater and the second-stage feed mixer in parallel. The material heater is connected to the first-stage feed mixer, and the C4 material feed pipe is connected in parallel on the pipeline between the feed heater and the first-stage feed mixer, and on the pipeline between the reflux pump and the second-stage feed mixer. The present invention adopts two-stage selective hydrogenation, which avoids serious coking in the first-stage reactor caused by deep hydrogenation of 1,3-butadiene, and reduces the operation cycle of the device and the service life of the catalyst. In addition, due to the stronger adaptability to raw materials, it is not necessary to separate light and heavy carbon four, and the mixed carbon four can be directly hydrogenated, which improves the utilization rate of raw materials.

The invention provides an earth pressure balance shield mud cake prevention system based on synchronous jet flow. The system comprises a panel fixed sprayer, a cutterhead, a shield body, a soil warehouse separating plate, flushing guns, a flushing position location and tube connection, a high pressure pipeline and pipes, a water separator, a safety valve, a pressure gauge, a high pressure newly increased centrifugal pump, an original centrifugal pump, a base, a water supply pipe, a screw conveyor, a controller and a second trolley. The system provided by the invention has the advantages that working efficiency is high, cost is low, equipment investment is low, operation is simple, no dead angle flushing is carried out on the back of the cutterhead, a bracket of the cutterhead and the soil warehouse separating plate by virtue of the flushing guns at different positions of the soil warehouse separating plate, nozzles of the flushing guns are designed into different specifications, and axial four-hole, axial one-hole and radial four-hole structures are contained, so as to meet flushing requirements of different parts; no dead angle flushing is carried out on a cutter at the center part of the cutterhead by virtue of the panel fixed sprayer of the cutterhead; and mud cake flushing and shield tunneling are synchronous, and mud cake prevention does not influence normal shield tunneling.

The invention discloses a method for judging proper amount of refrigerants for a multi-united air conditioning unit, comprising the following steps of: after adjusting a four-way reversing valve (1) of the unit to a refrigeration mode and starting and running a compressor (2) of an outdoor unit for a period of time t, measuring an outdoor environment temperature T, the frequency f of the running compressor (2) and the exhaust pressure P0 of the compressor (2); and then comparing the exhaust pressure P0 of the compressor (2) with the standard region of an exhaust pressure corresponding to the outdoor environment temperature T and the frequency f of the running compressor (2), if the exhaust pressure P0 of the compressor (2) is positioned in the standard region, judging that the amount of the refrigerants is proper, if the exhaust pressure P0 of the compressor (2) is greater than the maximum of the standard region, judging that the amount of the refrigerants is too much, and if the exhaust pressure P0 of the compressor (2) is less than the minimum of the standard region, judging that the amount of the refrigerants is insufficient. The method is accurate, visualized and convenient.

A vehicle control system includes: a chemical storage unit 110 such as a lithium ion battery; a physical storage unit 120 such as a capacitor; an inverter 140 that is driven upon receiving a direct current from the storage units 110 and 120; and a motor 150 that is driven upon receiving an alternating current output from the inverter 140. The vehicle control system comprises: a position determination unit 180 for determining, based on present position information acquired by a present position information acquisition unit 170, whether a vehicle is approaching a parking position indicated by parking position information 161; and a control unit 190 for, when the vehicle is determined to be approaching the parking position, controlling the use of the electric power of the physical storage unit 120, such as charging the chemical storage unit 110 with electric power from the physical storage unit 120.

An LED lamp with a flow guide structure guides external air to dissipate heat from the LED lamp includes a lamp base, a heat dissipating body, a heat dissipating plate and an LED module installed in the lamp base, and heat dissipating holes formed on the lamp base. The heat dissipating body includes heat dissipating fins, and a heat dissipating passage defined between any two fins and disposed corresponding to the heat dissipating hole. The LED module is in a thermal contact with the heat dissipating plate. The heat dissipating plate is attached onto the heat dissipating fins and includes openings. A flow guide plate is formed at a lateral edge of each opening and extended from the heat dissipating plate for guiding external air into the heat dissipating passage and out from the heat dissipating hole to expedite a natural convection in the lamp and prevent a thermal aggregation.

The invention relates to a high-reliability high-stability-degree hollow rotating traveling wave ultrasonic motor, which belongs to the technical field of the small and special motor. The ultrasonic motor comprises an encloser, a rotor, friction material, a stator, piezoelectric ceramic, a stator seat, a bearing, a dust cover for the bearing, and a loading nut. The motor disclosed by the invention is supported by one bearing, an anti-redundancy structure is designed, and the motor rotor and the stator seat are made of stainless steel material with the coefficient of linear expansion similar to that of the bearing. The situations that the revolving speed fluctuation quantity of the ultrasonic motor is raised, and the moment output performance is lowered, and the service life of the ultrasonic motor is shortened due to a plurality of factors can be effectively improved, wherein the factors comprise that the pressure distribution of the contact interface of the stator and the rotor is uneven due to double-end bearing supporting, more mutually-cooperated sizes and big deviation of machining and assembling of the ultrasonic motor; abrasive dust generated by motor working enters the bearing; the coefficients of linear expansion of materials are in a great difference under the high temperature and low temperature working conditions; and a fit clearance is changed.

The embodiment of the invention discloses a device for monitoring the pressure value of an air conditioner in real time. The device comprises a pressure sensor, a control module and a moving ring monitoring module, wherein the pressure sensor is installed in a refrigerating circuit of the air-conditioner, and is used for detecting the variation of the pressure of the air conditioner and transmitting pressure data to the control module; the control module is connected with the pressure sensor and is used for receiving the pressure data sent by the pressure sensor and uploading the pressure data to the moving ring monitoring module; and the moving ring monitoring module is connected with the control module and is used for centralized monitoring of the pressure value of the air conditioner. In the device, the pressure sensor is adopted to replace a pressure switch so as to directly check the pressure value of the air conditioner in no need of hanging a pressure gage by man power to measure the pressure, thereby improving the efficiency, reducing the judgment time and maintenance time of faults and reducing the leakage of freon and refrigeration oil; simultaneously, the operation modeof the air conditioner can be traced, so that potential fault areas and potential energy-saving spaces of an air conditioning unit are found in advance; and in addition, the demand of a communicationmachine room on the refrigerating output of the air conditioner in future is correctly forecasted through analyzing historical data.

The invention discloses a method for starting hybrid MMC (Modular Multilevel Converter) including full-bridge submodules, and belongs to the technical field of flexible high-voltage direct-current power transmission. The method comprises an uncontrolled charging stage and a controlled charging stage, wherein at the uncontrolled charging stage, all the submodules are locked, and capacitors in the submodules are charged by an alternating-current power grid. At the end of the uncontrolled charging stage, the controlled charging stage is entered, a current converter is unlocked, a closed-loop control loop is added to control submodule switch tubes, and submodule capacitors are further charged to a rated voltage. A starting process is finished when voltages of all submodule capacitors reach therated voltage and a direct-current side voltage reaches a rated direct-current bus voltage. By adopting the method, the current converter is controlled to run under an increased voltage at the controlled charging stage by means of the negative level output capabilities of the full-bridge submodules, so that an alternating-current side output voltage is increased; impact current of the alternating-current power grid in a charging process is reduced; a current-limiting resistor is switched off under low current; and influence on the service life of a power device is avoided.

The present invention discloses self-loop optical receiving/transmitting module, a test device and a method. Wherein, the module comprises an electrical interface for the optical receiving/ transmitting module in compliance with requirements for multi-source stipulations on small-sized packaging and hot plug. A differential signal input terminal of the electrical interface is correspondingly connected with a differential signal output terminal of the electrical interface through a series capacitance. A resistance is connected between two differential signal output terminals of the electrical interface. The self-loop optical receiving/transmitting module disclosed by the present invention can replace an actual XFP optical module of normal functions, realizes internal loop of communications in the optical module and is mounted in an optical interface board of equipment and suitable for extensive application to equipment test and aging, thus reducing optical module aging to some extent and avoiding reduced service life and increased failure rate of the optical module due to aging.

Provides are a novel expanded perlite insulation board and a preparation method thereof. The novel expanded perlite insulation board is mainly prepared by raw materials of 50%-80% of expanded perlite, 10%-40% of inorganic adhesive and organic adhesive, 0%-10% of fiber and 0%-10% of property-modifying additive. The novel expanded perlite insulation board uses a compression molding process and is high in production efficiency, good in size stability and low in production cost. The novel expanded perlite insulation board has excellent fireproofing safety to overcome shortcomings of poor fireproof performance, ageing resistant and environment pollution; and has excellent waterproofness and low thermal coefficients to overcome a shortcoming that a common inorganic insulation material is large in thermal coefficient and strong in water absorbability. The novel expanded perlite insulation board has excellent heat insulation performance, can achieve thermal insulation performance levels of the organic material, simultaneously has non-ignitable performance of the inorganic material, is good in durability and weather fastness, can achieve same service life of buildings, solves the problem that service life of an organic board is short, and is favorable for energy saving and environmental protection. The service life of the organic board can be asynchronous with the building.