31results about How to "Equilibrium temperature difference" patented technology

The invention provides a phase change composite, a preparation method and an application. The phase change composite is prepared from paraffin powder, expanded graphite powder, polyethylene particlesand SEBS. By adopting a material system in a special ratio, the defects that the conventional phase change energy storage material is low in thermal conductivity and required to be encapsulated in practical use to prevent leakage are overcome, thermal management efficiency is increased greatly, and popularization and application range of the phase change energy storage material is expanded.

A piston for the crosshead engine, in particular a piston is used for a large two-cycle diesel engine and is provided with a piston upper part (2) mounted to an upper flange (9) of a piston rod (1). The piston upper part is provided with the piston crown (3) connected to a piston skirt (4) annularly surrounding the periphery, and the piston crown covers the central cooling chamber (8). In this chamber (8), coolant can be injected via a supply line (10) arranged inside the piston rod (1), and can be carried away via a return line (11) provided outside in the radial direction of the line (10). Provided is a highly reliably cool a piston crown, in a piston provided with the piston crown having a rising center or with a cooling chamber formed to have an inserting body (17). The inserting body (17) has opposite inner nozzle (21) connecting to the supply pipelines (10) pointing to the piston crown (3) enclosed by an annular cell (22) which is formed into a coolant collecting chamber.

The present invention relates to a method for quickly cooling hot isostatic press which is formed by a pressure container (1). The inner part of the pressure container is provided with a furnace material area (19) and an insulator (8) arranged therein. A heating element (4) is provided in the range of the insulator (8), and the furnace material (18) is arranged on the furnace material splint (6). The method is characterized in that fluid is injected into the inner part of the furnace material area (19) of the pressure container (1) through at least one nozzle (13) to form a rotational flow (23). The fluid is blended with the fluid adjacent with the furnace material (18) in the flowing process of the rotational flow (23) by the insulator (8), and furthermore the temperature of fluid flowing out of the nozzle (13) is lower than that of the fluid in the furnace material area (19) or the furnace material (18). In the hot isostatic press commended by the invention, at least one pipe (12) in the pressure container (1) is connected with at least one nozzle (13) in the furnace material area (19) and provides cryogenic fluid to the pipe (12).

The invention relates to a casting technology capable of reducing the hardness difference of a traction wheel rope groove face. The casting technology comprises the following technical steps: manufacturing an upper sand box; manufacturing a lower sand box; making a core; milling a molten iron casting passage; assembling a mould; (f) casting; cleaning. A water inlet is formed in the sand core of an inner cavity in a milling manner, so that a feed head is in multi-point communication with a sand cavity; on one hand, the sand core of the inner cavity is positioned in the center of the cavity, and thus casting molten iron flows in from the middle of the cavity; one the other hand, the feed head is in multi-point communication with a sand cavity, so that the times spent on the molten iron in different directions reaches the same horizontal plane of the rope groove face are the same, the temperatures at the circle of the rope groove face are small in difference and relatively uniform, the subsequent solidification processes are basically the same, the hardness difference of the traction wheel rope groove face is reduced, and the product quality of castings is improved.

The invention relates to a novel lampshade of a vehicle headlamp, which can effectively balance a temperature difference between inside and outside of a headlamp and effectively prevent fog and a heating deformation situation of parts. The novel lampshade of the vehicle headlamp comprises a hemispherical lampshade body and a back plate fixed on the back side of the lampshade body, wherein an air inlet is formed in the front side of the bottom of the lampshade body; an upwards bent flow baffle is arranged on the inner side of the air inlet; a filtering screen is arranged at the air inlet; a water filtering screen is arranged between the end part of the flow baffle and the lampshade body; a drying agent is arranged between the filtering screen and the water filtering screen in a filling manner; a first air outlet and a second air outlet are respectively formed in the top and the bottom of the rear side of the lampshade body; a temperature control switch is arranged on the top of the inner side of the lampshade body; a sliding cover plate and a motor are arranged at the bottom of the lampshade body; the sliding cover plate relatively slides on the outer side of the air inlet under the driving of the motor; the temperature control switch is electrically connected with the motor.

The invention discloses a health-care heating bed mattress which comprises a bed mattress body and a heater and is characterized in that the bed mattress body is internally provided with a far infrared heating layer; the far infrared heating layer comprises more than one liquid circulation pipeline and a basal body for pipeline laying; pipeline grooves are formed in the basal body according to a preset pipeline distribution manner; the pipelines are embedded into the pipeline grooves; the two ends of the pipelines are connected with an inlet pipe and an outlet pipe of the heater respectively via connecting pipes to form a liquid circulation passage; the heater is arranged outside the bed mattress body; and the inlet pipe of the heater is located below the outlet pipe. According to the mattress, heat energy is generated by actively heating purified water or other liquid, and far infrared rays are generated to exert a health-care effect; at the same time, water circulation is promoted by a convection manner to transfer heat, and the mattress has the advantages of high safety and no noise.

The invention discloses a temperature control method and a temperature control device of an air conditioner. The method comprises the following steps: acquiring a first temperature value for representing the temperature in a space where a first air conditioner is positioned in response to a triggered instruction for starting an air conditioner temperature balance mode; receiving a second temperature value which is transmitted by a second air conditioner and is used for representing the temperature in a space where the second air conditioner is positioned; generating a control instruction according to the first temperature value and the second temperature value to control balance between the temperature in the space where the first air conditioner is positioned and the temperature in the space where the second air conditioner. According to the temperature control method, the problem of a larger temperature difference between rooms with air conditioners due to low intelligence of control over the air conditioners in the prior art is solved; therefore, the temperature balance in the spaces applying the air conditioners is enhanced, and the user experience is further improved.

A quenched core mold and quenching method for a cylindric steel thin-wall component are disclosed. The quenched core mold includes a mold body. The radial dimension of an external circular surface ofthe mold body is designed as an inner-pore radial dimension before drying of the component, thus ensuring that a heated inner hole expands and the component is put into the mold body successfully during component quenching heating, and ensuring that the component tightly clamps the mold body after quenching. The external circular surface of the mold body is provided with a plurality of axial through slots which are disposed axially, bidirectionally cut-through, and used for allowing quenching oil to flow through, preventing contraction crack of the component during quenching, and assisting component demolding. The plurality of the axial through slots are equally spaced along the periphery direction of the mold body to form a uniform saw-toothed external circular surface. Slot bottoms of the axial through slots corresponding to end surface wide edges of the component are provided with axially-through wide-edge cooling slots used for increasing the flux of the quenching oil to cool the end surface wide edges of the component. Inner hole and planarity deformation of the component is reduced during quenching to allow dimension deformation of the component to be controlled in a reasonable range.

The invention relates to a Wheatstone bridge and a multi-dimensional force sensor. The Wheatstone bridge comprises four bridge arms, each bridge arm comprises a plurality of resistors, the number of the plurality of resistors in each bridge arm is the same, the reference resistance values of the plurality of resistors are the same, the plurality of resistors in each bridge arm adopt a preset series-parallel structure, and in the preset series-parallel structure, the equivalent resistance value of the plurality of resistors is equal to the resistance value of a single resistor. The plurality of resistors are used for balancing the temperature difference of single resistors. A single-resistor bridge arm is replaced by a mode that a plurality of resistors form a bridge arm according to a preset series-parallel structure, and on the basis of not changing the original output characteristics of the circuit, a plurality of resistors with the same or similar temperature characteristics are used for hedging, so that the individual temperature difference is balanced. Therefore, the influence of the resistance value difference of the bridge arm resistor caused by the temperature change on the differential output signal of the Wheatstone bridge is reduced, and the technical problem that the resistance value and temperature difference of the strain gauge of the Wheatstone bridge greatly influences the differential output signal is solved.

The invention discloses an optical cable splice box. The optical cable splice box comprises an upper casing and a lower casing which are connected through a connecting piece, wherein an upper semi-circular hole and a lower semi-circular hole which are opposite to each other are formed in the longitudinal side walls of the upper casing and lower casing respectively; a round optical cable connectinghole is formed by the upper semi-circular hole and the lower semi-circular hole; sequentially arranged holes are formed in the transverse side walls of the upper casing and lower casing respectively;ventilating pad layers are fixed at the holes corresponding to the inner side walls of the upper casing and the lower casing, and each ventilating pad layer comprises a shading layer, a waterproof and breathable layer and a metal mesh layer from outside to inside. According to the optical cable splice box, the phenomenon of uneven expansion or shrinkage due to different environmental temperaturedifference can be reduced, and the problem of loosening at the joint of the optical cable is solved.

The invention discloses an arc-triangle-shaped powder metallurgy brake pad for a high-speed motor train unit. The arc-triangle-shaped powder metallurgy brake pad for the high speed motor train unit comprises a steel back and friction blocks arranged on the steel back, the friction blocks are in the shape of an arc triangle with a straight edge, and the arrangement number of the friction blocks onthe brake pad is increased from an inner ring to an outer ring in sequence. Compared with the prior art, the arc-triangle-shaped powder metallurgy brake pad has the positive effects that 1, for the unique arc triangle structure with a round hole in the middle, the total side area is larger than that of other structures, the heat dissipation effect is good, and the brake temperature can be effectively reduced; 2, the reasonable arrangement of the positions of the friction blocks is realized, compared with other arrangement modes, the temperature difference between friction bodies of the inner ring and friction bodies of the outer ring is more uniform, and the consistency of the abrasion conditions of the friction blocks of the inner ring and the friction blocks of the outer ring is better;3, gaps between the friction blocks and the steel back are reasonably designed, so that the problem of framework deformation caused by too high braking temperature under a severe working condition issolved; and 4, the rotation of the friction blocks is effectively limited by means of the design of the two straight edges of each friction block and anti-rotation bosses, and the reliability of the friction blocks in the using process is improved.

An urban heat island effect relief mirror is composed of an insulation board 1 and concave mirror 2 which are integrated. A plurality of blocks of concave surfaces are formed on the insulation board in a pouring or vacuum aluminum plating method, and then a layer of reflective materials are coated on the concave surfaces to form the concave mirrors. The concave mirrors are fully distributed on the outer surface of the insulation board in a step mode. During use, the urban heat island effect relief mirror is attached to outer walls and roofs of buildings or the grounds, the insulation board is used for heat preservation, and the concave mirrors are used for reflecting sunshine. The concave mirrors have a sunshine converging effect and inwards refract the reflected light rays so that when sunshine illuminates to the concave mirrors on the buildings, the reflected light stays away from the buildings due to inward refraction and instead spreads to the space, radiation of urban sunshine is reduced, and accordingly the urban heat island effect is reduced. The urban heat island effect relief mirror improves the current hot situation of cities, balances the temperature differences between cities and suburbs, prevents suburban pollutants from entering cities, and accordingly relieves urban air pollution.

The invention relates to a distributed photovoltaic grid-connected cabinet. The cabinet comprises a sealed cabinet, wherein a heat conduction assembly is installed in cabinet, one end of the heat conduction assembly is arranged in the cabinet, the other end is buried in underground soil, and the heat conduction assembly is used to guide heat exchange between the cabinet and the soil. The cabinet is advantaged in that the structure is stable, layout is reasonable, heat exchange circulation with the ground can be realized, a problem of overlarge temperature difference is effectively balanced, use of extra temperature control and temperature regulation equipment is avoided, use cost is reduced, assembly is convenient, transportation is convenient, and current use requirements are met.

The invention discloses a dual-motor intelligent heat exchange new fan. The dual-motor intelligent heat exchange new fan comprises a machine box, an efficient filter screen arranged on the top of the machine box, a first fan arranged on the middle of the machine box, a back exhaust hole formed in the back of the machine box, a side surface exhaust hole formed in the side surface of the machine box as well as a second fan, a heat exchanger, a primary effect filter screen, a back air inlet hole formed in the back of the machine box, a side surface air inlet hole formed in the side surface of the machine box and an air inlet which is arranged on the bottom of the machine box and is used for discharging from inside to outside.

The invention discloses a flue gas distributor controlled according to the outlet temperature difference and a boiler system. A temperature sensor is arranged on each of the two sides of a flue gas outlet of the flue gas distributor, the temperature sensors detect the flue gas temperature of the two side positions of the flue gas outlet, the temperature sensors are in data connection with a controller, the controller reads the detected temperature and calculates the temperature difference, and the controller automatically controls a driving mechanism to adjust an adjustable flow guide plate to stretch or retract by a set distance relative to a fixed flow guide plate according to the calculated temperature difference so as to change the areas of the flow guide plates. By calculating the temperature difference of different positions of the outlet, the outlet flue gas temperature difference is automatically controlled to be kept within a certain range, the outlet flue gas temperature is kept balanced, and therefore the temperature difference is kept within a certain range.

A multi-kinetic energy wiper include a housing, A heat chamber and a cooling chamber are arranged in that shell, A cool chamber is located below that heat chamber, A heating resistance wire is arranged in the heating room, an air inlet pipe is arranged at the right end of the heating room, a micro-fan is arranged on the air inlet pipe, an air outlet hole is arranged on the surface of the heating room, a micro-refrigeration pipe is arranged in the cooling room, a water inlet pipe is arranged at the right end of the cooling room, a water outlet hole is arranged on the surface of the cooling room, a cleaning brush is arranged on the left side of the shell, and a wiper plate is arranged on the upper end of the shell. As that cool chamber and the heat chamber are arranged, when the temperaturein the vehicle is low or high, cold water and hot air are sprayed to cool and heat the vehicle window, thereby effectively balancing the temperature difference between the vehicle and the outside, reducing the generation of water mist, and simultaneously removing the frost and snow adhered to the outside of the glass.

The present invention relates to a secondary battery separator having excellent heat dissipation characteristics and thermal stability compared to a conventional polyolefin-based separator, and an electrochemical device including the same to ensure safety while improving performance.

The invention relates to the technical field of PCB manufacturing, and discloses a rigid-flexible combined board capable of improving discoloration of a brownification layer of a multilayer flexible core board and a manufacturing method of the rigid-flexible combined board. The rigid-flexible board comprises at least one inner-layer core board and a single-side copper-clad plate arranged on one side or two sides of the inner-layer core board. A layer of covering film attached to the copper surfaces is arranged between the copper surfaces of every two adjacent inner-layer core plates, and a cavity area is arranged between the covering films. A covering film is also arranged on the copper surface of one side, close to the single-side copper-clad plate, of the inner-layer core plate, a cavity area is also arranged on one side, far away from the inner-layer core plate, of the covering film, and a heat insulation material layer is arranged on the outer side of the cavity area of the covering film on the copper surface of one side, close to the single-side copper-clad plate, of the inner-layer core plate. According to the invention, heat insulation is carried out on the cavity area through the heat insulation material layer, close to the copper surface cavity area of the single-side copper-clad plate, of the inner core plate, so that the corresponding copper surface keeps a relatively balanced temperature difference, uneven heating is avoided, and poor color difference caused by the fact that brownification characteristics are influenced by temperature difference is improved.

The invention relates to an energy saving type water dispenser, which comprises a body, a heating water box, a refrigeration cavity, a cold water box and a refrigeration mechanism, wherein the heating water box, the refrigeration cavity, the cold water box and the refrigeration mechanism are arranged in the body; the refrigeration mechanism is formed by sequentially connecting a compressor, an evaporator and a condenser; the condenser is partially or totally arranged in the cold water box; the cold water box communicates with the heating water box through a water outlet pipe; a temperature difference power generating sheet is respectively arranged on the outer wall of the refrigeration cavity and the cold water box; the temperature difference power generating sheets are connected with a rechargeable battery; wing sheets are arranged on the two side walls of the heating water box. The energy saving type water dispenser has the beneficial effects that the redundant heat energy and cold energy can be recovered; the power utilization rate of the water dispenser is improved; the cost is reduced.

The invention discloses a welding-free square lithium battery module, which comprises structures such as a square lithium battery, a cold plate, an insulating plate, an electrode contact piece, a fixing frame, and a pressing plate. The inside of the square lithium battery module does not need to be welded. The connection between the liquid inlet and outlet on the cold plate and the sealing joint can be used to quickly connect the cells in series and parallel, and the modules can be freely combined. The welding-free square lithium battery module of the present invention reduces the damage caused by battery welding, enhances the heat dissipation (heating) capacity of the battery, improves the utilization efficiency of the battery, and enhances the free combination ability of the square lithium battery with lower cost and means. And heat dissipation (heating) capacity, reduce the temperature of the prismatic lithium battery, balance the temperature difference between the battery and the module, increase the reliability of the prismatic battery module, and prolong the service life of the equipment used by the prismatic lithium battery module.