46results about How to "Improve overheating" patented technology

The invention discloses a control method and control device of an air conditioning system and a machine room air conditioning system. The air conditioning system comprises air conditioning equipment and cabinets, multiple servers are installed in the cabinets, and the air conditioning equipment is used for supplying air to the cabinets and dissipating heat for the servers in the cabinets. The control method comprises the steps that the temperature values of control chips of the servers are detected; based on the temperature values, a preset load scheduling strategy is adopted to adjust the number of the servers in a working state and the air supply temperature of the air conditioning equipment; and the total energy consumption of the air conditioning system is controlled based on adjustment of the number of the servers in the working state and the air supply temperature. The technical problems that in the prior art, IT equipment power consumption in a machine room is not matched with cooling capacity supply of an air conditioning system, and the local overheating or supercooling phenomenon is likely to happen are solved.

The invention discloses a laser 3D printing method with a shape correction function. The method comprises the following steps that (1), projection characteristics of all points in scanning breadth are measured, and the focusing light spot deformation amount of all the points in the scanning breadth before shape correction is obtained; (2), the compensation dosage of a light spot shape correction device to all the points is set according to the measurement result in the first step, and the sizes of focusing light spots at all the points in the scanning breadth can have consistency; (3), a laser is stated, and the laser is dynamically matched with the shape correction device and a scanning device for laser 3D printing. According to the laser 3D printing method and system with the shape correction function, the laser sintering degree is controlled by changing the laser pulse width in the 3D printing process, the situation that holes, superburning and nodulizing are generated in the printing process is improved, and density is improved; and besides, the shape correction device is added, it can be guaranteed that the sizes of the focusing light spots in the scanning breadth have consistency by precisely controlling the compensation amount of the light spot shape correction device, and thus 3D printing quality is guaranteed.

The invention discloses a regional heat supply system integrating pipe network grading and intelligent control, and a transformation method. An energy station is used as a quasi-primary network, transformation is carried out based on a heat inlet, and the heat inlet originally used as a primary network is transformed into a quasi-secondary network; a heat branch and a heat tail end are transformedinto a quasi-tertiary network and a quasi-quaternary network correspondingly so as to realize flow control and load regulation irrelevant to the pressure in a control unit ring; a water pump and a pressure gauge are mounted on a water return pipeline of the quasi-primary network; and dynamic differential pressure balance valves and pressure gauges are mounted on water return pipelines of the quasi-secondary network and the quasi-tertiary network, a dynamic differential pressure balance valve and a water distributing and collecting device are mounted on a water return pipeline of the quasi-quaternary network, and communication modules connected with a monitoring platform are mounted in the quasi-primary network, the quasi-secondary network, the quasi-tertiary network and the quasi-quaternary network correspondingly.

The invention discloses a wet clutch friction plate with a bionic oil groove structure, and belongs to the technical field of automobile clutch friction plates. The wet clutch friction plate consists of a core plate and friction liners, wherein the two friction liners are symmetrically and fixedly connected with the front side and the back side of the core plate; radial oil grooves and annular oil grooves are formed in surfaces of both two friction liners; bionic micro structures consisting of guide grooves and bionic unit grooves are arranged at the bottoms of the oil grooves. Therefore, by adopting the wet clutch friction plate, an excellent one-way conveying guide function on cooled lubricating oil can be achieved, the flowing speed of the lubricating oil in the oil grooves can be effectively increased, heat convection between the lubricating oil and the friction plate can be improved, and surface temperature increase of the friction plate can be remarkably reduced; due to the combination of the radial oil grooves and the annular oil grooves, a unique composite oil groove mode can be achieved, failure situations such as over heat and deformation caused by concentrated heat stress on the surface of the friction plate can be alleviated, the performance of the friction plate can be comprehensively improved, and the service life of the friction plate can be prolonged.

The invention relates to a pressure detecting method for an electric pressure cooker. The method comprises the following steps of: regulating pressure in advance: regulating the breaking pressure of a pressure travel switch of the detected electric pressure cooker to a preset value P0; aerating for pressurizing: charging a gas medium into the detected electric pressure cooker to raise the pressure in the detected electric pressure cooker; detecting pressure: recording the product pressure value P of the pressure travel switch at a breaking moment, and comparing the product pressure value P with a detection standard pressure value P1; when the product pressure value P is accordant with the detection standard pressure value P1, entering a next step; when the product pressure value P is not accordant with the detection standard pressure value P1, stopping detection for maintaining; and releasing pressure: releasing the internal pressure of the detected electric pressure cooker. The detecting method can be widely applied to electric pressure cooker products, and is a simple, efficient and accurate detecting method for the working pressure of an electric pressure cooker; and due to the adoption of the detecting pressure, the production field can be saved, electric energy is saved, the production efficiency is increased, and the overheated working environment for workers is improved.

The invention discloses an unreeling machine convenient for cutting for hardware machining. The unreeling machine comprises a workbench and a cutting device; a reeling drum is arranged on the left side of the workbench; a plurality of driving rollers distributed in parallel are arranged on the left side of the upper end of the workbench; a plurality of driven rollers are arranged on the upper sides of the driving rollers; each rotating shaft I penetrates through the inner side of the corresponding driving roller and is fixedly connected with the corresponding driving roller; transmission wheels I are arranged on the outer sides of a plurality of adjacent driving rollers in a sleeving mode; each transmission wheel I is internally provided with a transmission belt I in a clamping manner; andeach motor is installed on one side of the corresponding rotating shaft I. When the unreeling machine disclosed by the invention is used, the motor is used for driving the driving rollers and the rotating shaft I to rotate; each rotating shaft I penetrates through the corresponding transmission belt I; the transmission belts I are used for driving the plurality of driving rollers to move simultaneously; raw materials for hardware machining are straightened in a pressing way through extrusion of the driving rollers and the driven rollers; meanwhile the raw materials can be pulled to move; andthe raw materials drive the reeling drum to rotate to continuously straighten the raw materials wound on the outer side of the reeling drum.

The invention provides a wear-resistant highly heat-conducting sheet and application thereof and relates to a heat-conducting material. The wear-resistant highly heat-conducting sheet comprises a heat-conducting layer which is located above and is made of a heat-conducting material with a heat conductivity coefficient larger than 2 W/m-K, and a wear resistant layer which is located below and is made of a wear resistant material with a heat conductivity coefficient larger than 0.3 W/m-K, and the wear resistant layer is fixed under the heat-conducting layer. The wear resistance performance is improved by the wear resistant layer, and at the same time the heat-conducting layer protected by the wear resistant layer is used to improve interface thermal resistance. A plugging resistant connectorwith the wear-resistant highly heat-conducting sheet is the application of the wear-resistant highly heat-conducting sheet in the connector.

The invention discloses a bimetal plunger pump cylinder body extrusion casting forming method, and relates to the technical field of bimetal extrusion forming preparation. Firstly, in the preheating stage, a steel substrate is placed in an extrusion die, an induction coil heats the steel substrate to 1130-1170 DEG C, a liquid copper alloy with the temperature being 1150-1250 DEG C is injected into the steel substrate, standing and cooling are carried out at the room temperature to 750-900 DEG C, and then in the semi-solid extrusion stage, lower and upper timed and partitioned extrusion is conducted, and a lower punch upwards conducts semi-solid extrusion so that a copper alloy valve plate copper layer at the lower end of a plunger pump cylinder body can be extruded and formed. After a valve plate of a cylinder body is formed, an upper punch begins to downwards extrude a riser at the upper end of the cylinder body, and a plunger and a kidney-shaped hole of the cylinder body are formed. The bimetal cylinder body prepared through the bimetal plunger pump cylinder body extrusion casting forming method is free of interface cracking and high in bonding strength, and the copper alloy structure is compact, fine and uniform.

The invention provides a micro turbojet engine combustion chamber structure. The micro turbojet engine combustion chamber structure comprises a flame tube outer cylinder and an evaporation pipe fixingplate, wherein the flame tube outer cylinder is arranged outside a flame tube inner cylinder in a sleeving mode, and a combustion chamber is formed between the flame tube inner cylinder and the flametube outer cylinder; air inlet hole sets are formed in the flame tube inner cylinder and the flame tube outer cylinder; the evaporation pipe fixing plate is connected to one end, far away from a first end cover, of the flame tube outer cylinder, an evaporation pipe is arranged inside the combustion chamber, and the evaporation pipe is close to the inner wall of the flame tube inner cylinder; andthe air inlet hole sets comprise a plurality of second through holes, the second through holes are formed in the flame tube outer cylinder which is located at the same angle as the evaporation pipe, and the straight line formed by connecting the multiple second through holes which are located at the same angle as the evaporation pipe is parallel to the axis of the evaporation pipe. The second through holes which are formed in the flame tube outer cylinder and directly face the evaporation pipe are formed, and when pressurized air enters the combustion chamber through the multiple second through holes, the air is blocked by the evaporation pipe to form airflow flowing along the wall surface, and therefore the inner wall of the flame tube outer cylinder is cooled and protected.

The invention discloses a pixel data optimization method, a pixel matrix driving device and a display. The optimization method comprises the following steps: acquiring a first pixel data set; obtaining a second pixel data set according to the first pixel data set; obtaining an initial amplitude difference according to pixel data of two adjacent rows of pixels in the second pixel data set; and obtaining pixel output data of the n rows * M columns of pixels according to the initial amplitude difference and a preset threshold. According to the invention, the initial amplitude difference obtained by the pixel data of the two adjacent rows of pixels is compared with the preset threshold value, so that a final pixel gray-scale value to be displayed by each pixel can be adjusted according to a comparison result, and the energy consumption of the driving device can be improved. Therefore, the overheat phenomenon of the COF driving device is improved, and the visual effect can be improved.

The invention discloses a device and method for improving the local overheating phenomenon and temperature non-uniformity of a converter transformer. By adopting a hollow box body, an oil guide structure, small holes and other structures, the internal flow field distribution of the converter transformer is more uniform, the convection heat exchange efficiency of transformer oil is improved, and the heat and mass transfer between the transformer oil is enhanced, so that the non-uniformity of the internal temperature distribution of the converter transformer is improved. Local enhanced heat exchange is carried out on a local overheating position by adopting a directional nozzle structure, so that the local overheating phenomenon of the converter transformer is improved.

The invention discloses a construction method of an electric vehicle permanent magnet wheel hub motor energy composite controller.A composite controlled object is formed by a permanent magnet wheel hub motor, a temperature measurement module and a rotating speed and electric angle calculation module, and a PARK conversion module, a CLARK conversion module and a PWM inverter module are sequentially connected in series to form a composite inverter control module; an intelligent heat control module is composed of a temperature setting module, a heat calculation module, and a heat regulation and control module, a heat PI regulation module and a current conversion module which are sequentially connected in series; a flux linkage observation module, a coordinate transformation module, a torque error calculation module, a reference torque calculation module, a torque estimation module, a target torque giving module, a PI adjustment module, a phase angle updating module and a current transformation module jointly form a composite temperature control torque module, and the temperature of the hub motor is measured to feed back and adjust the running state of the motor; and the composite temperature control torque module and the heat control module are jointly regulated and controlled to realize temperature and torque control.

The invention provides a compound thermal-conductive interface material suitable for a plugging occasion between an optical module and a shell cooler. The compound thermal-conductive interface material suitable for the plugging occasion between the optical module and the shell cooler comprises a thermal-conductive layer, an adhesive layer and a wear-resistant layer which are sequentially arranged;a material of the thermal-conductive layer is a thermal-conductive interface material which has a thermal conductivity coefficient higher than 2 W/m.K in a thickness direction and thickness in a range of 70-500 mum, a material of the wear-resistant layer is a wear-resistant material which has a thermal conductivity coefficient higher than 0.3 W/m.K and thickness smaller than 50 mum, and the compound thermal-conductive interface material is fixed to an optical module plugging structure through the adhesive layer. The compound thermal-conductive interface material is composed of the thermal-conductive layer, the adhesive layer and the wear-resistant layer, wherein the wear-resistant layer provides scratch-resistant performance, and meanwhile, high thermal conductivity of the thermal-conductive layer under protection of the wear-resistant layer is used for improving the interface thermal resistance; therefore, the compound thermal-conductive interface material is suitable for the gap-filling cooling occasion, which is used for filling a gap between the optical module and the shell cooler, with plugging requirements.