11results about How to "Guaranteed heat transfer effect" patented technology

The invention relates to the technical field of cylinder sleeves and detection thereof, in particular to a burr-shaped cast-in type cylinder sleeve and a detection method thereof. The cylinder sleeve is made of cast iron and is cast into the cylinder body through a die-casting or gravity casting process, and a plurality of burrs are formed on the peripheral face of the cylinder sleeve. At least one burr meets the following conditions: in the burr-shaped cast-in cylinder sleeve, the diameter of the burr at the position 0.25 mm away from the top end is L1, and the diameter of the burr at the position 0.4 mm away from the top end is L2; and the ratio of the diameter L1 to the diameter L2 is more than or equal to 0.65 and less than or equal to 1.15. The specific shapes of the burrs are limited by limiting the diameter sizes of the two special positions, away from the top end, of the burrs, so that the binding rate between the single burrs and the cylinder body and the binding rate between the cylinder sleeve and the cylinder body are guaranteed, good heat dissipation performance between the cylinder sleeve and the cylinder body is guaranteed, and it is guaranteed that the cylinder sleeve does not deform in the working process.

The invention discloses an efficient energy-saving overlapped heat exchanger in the technical field of heat exchangers, which comprises a bottom plate, two heat exchange barrels are arranged above the bottom plate, and the two heat exchange barrels are stacked above the bottom plate; first supporting frames are symmetrically and fixedly connected to the left side and the right side of the bottom of the lower side heat exchange barrel, and the two first supporting frames are fixedly connected with the bottom plate. Second supporting frames are symmetrically and fixedly connected to the left side and the right side of the bottom of the upper side heat exchange barrel, and the bottom ends of the two second supporting frames are fixedly connected with the lower side heat exchange barrel. A cleaning mechanism is arranged in the heat exchange barrel and used for cleaning up scale accumulated on the heat exchange pipe. A driving mechanism is arranged between the two heat exchange barrels and used for driving the cleaning mechanisms in the two heat exchange barrels to continuously operate at the same time. The device can be used for continuously cleaning scale on the heat exchange tube, so that the surface of the heat exchange tube can be ensured to be flat and smooth, and the heat transfer effect of the heat exchange tube is effectively ensured.

The utility model provides a cooking utensil which comprises a heating base and a pot body, the heating base comprises a base body and a heating disc, at least part of the heating disc is arranged in the base body, the top face of the heating disc is higher than the top face of the base body, the pot body is detachably arranged on the heating base, and when the pot body is arranged on the heating base, the pot body is placed on the base body. The bottom face of the pot body can be tightly attached to the top face of the heating disc. The heating base is used for supporting the pot body, the heating disc is used for heating the pot body, the base body does not need to wrap the whole heating disc, and the pot body does not need to be contained in the base body, so that the overall thickness of the base body can be reduced, the production and processing difficulty of the base body and the heating disc can be reduced, and the cost is reduced; and the overall size of the heating base is reduced, the occupied space is reduced, and storage is convenient.

The invention relates to an industrial boiler waste heat utilization structure which comprises a waste heat utilization tank protection body, a dust cleaning assembly, ventilation pipes, a splicing filtering assembly and a waste heat utilization assembly, the dust cleaning assembly is installed in the waste heat utilization tank protection body, and the ventilation pipes are connected to the outer walls of the two sides of the waste heat utilization tank protection body in a penetrating mode. A splicing filtering assembly is installed on the ventilation pipe, and a waste heat utilization assembly is installed at the top end of the waste heat utilization tank protection body. The dust cleaning assembly is adopted, when smoke of the boiler is utilized, dust attached to the interior of equipment can be cleaned through a cleaning structure, the waste heat utilization effect is ensured, manual cleaning of the boiler is not needed, the heat transfer effect of the boiler is ensured, and the use effect of the equipment is improved; the spliced filtering assembly is adopted, the equipment and the boiler can be spliced through a clamping structure, smoke can be filtered, the filtering effect is reduced, and the spliced filtering effect is improved.

The utility model discloses an optimized heater core body which comprises a heater core body shell, a heat dissipation mechanism is fixedly installed on the upper portion of the outer wall of the heater core body shell, and the heater core body shell is fixedly connected with the heat dissipation mechanism through a limiting installation mechanism. According to the optimized heater core body, by arranging the limiting mounting mechanism, the upper portions of aluminum strips can be stably connected, meanwhile, the heat transfer performance during connection of the aluminum strips can be guaranteed, and by arranging the heat insulation mechanism, it can be guaranteed that heat loss of the heater core body can be prevented to the maximum extent when the optimized heater core body is used.

The utility model belongs to the technical field of power capacitor manufacturing, and particularly relates to a composite capacitor core shaft and a capacitor element. The composite capacitor core shaft comprises a core shaft body provided with a regular hexagon through hole, the core shaft body is composed of insulators, annular long holes are formed in the wall thickness of the two ends of the core shaft body in the length direction of the core shaft body, and an insulator interval is arranged between the two ends, close to each other, of the two annular long holes to form isolation. Heat conduction metal bodies are inserted into the two annular long holes respectively, the heat conduction metal bodies and the mandrel body are integrally formed, and the ends, away from each other, of the two heat conduction metal bodies make contact with metal spraying layers at the two ends of a metallized film on the capacitor element so that heat transfer of the capacitor element can be achieved. The internal hot spot temperature of the capacitor element is effectively reduced, the transverse heat conduction efficiency of the capacitor element is improved, the heat transfer effect is further improved, and the problem that heat dissipation and heat balance in the capacitor element with the enlarged geometric size become poor is solved.

The invention belongs to the field of polymer preparation processes, and relates to a device and a method for preparing crude glycolide, which can be industrially implemented, can be continuously operated and can be operated on a large scale. The device comprises a dehydration unit, a polycondensation unit and a depolymerization unit which are sequentially connected, the dehydration unit comprises a dehydration kettle, a dehydration kettle heater, a dehydration tower and a dehydration tower condenser, the polycondensation unit comprises a polycondensation kettle and an optional pre-polycondensation kettle arranged at the upstream of the polycondensation kettle, and the depolymerization unit comprises a pre-depolymerization kettle, a depolymerization kettle and a crude glycolide condenser. The raw material glycollic acid or glycollic acid ester is subjected to dehydration separation, optional pre-polycondensation, polycondensation, pre-depolymerization, depolymerization and the like to finally obtain a crude glycolide product. Meanwhile, a small amount of non-condensable gas, depolymerization residues, water or alcohol and other byproducts are produced. The device provided by the invention can realize industrial large-scale continuous production, and improves the yield of the target product through various strengthening means.

The invention relates to a heat storage system, which comprises an air duct main path, a heat storage system and a heat exchange system, the two ends of the air duct main path are both connected with the heat storage module, the heat storage module comprises a heating chamber and a heat storage unit, the heating chamber comprises a heating piece and an enclosed cavity wall, the heating piece is arranged in an air cavity formed by the cavity wall, and the air cavity communicates with the air duct main path and the heat storage unit; and the heat exchanger is used for being connected with a heat user, and the air duct main path can exchange heat with the heat user through the heat exchanger. When the heating piece is used for heating, heat of high-temperature radiation can be transferred to the heat storage unit through the material of the cavity wall and transferred through the cavity wall, so that the heat of the heating piece can be well taken away, the temperature does not exceed the use temperature, and the service life is prolonged. The cavity structure prevents heat dissipation and effectively guarantees the heat transfer effect, meanwhile, due to the fact that heat is radiated on the cavity wall, circulating gas rapidly transfers the heat of the heating piece to the heat storage unit through the cavity wall, and under multiple heat exchange measures, the heat exchange efficiency and the heating time are effectively guaranteed.

This utility model discloses a fluid kinetic energy heat pump, belonging to the technical field of heating and cooling equipment. It mainly includes a cold water tank and a hot water tank. The hot water tank is connected to an external circulation outlet pipe and an internal circulation return pipe. A large heat exchanger is installed between the cold water tank and / or the hot water tank and the internal circulation return pipe. The water inlet of the large heat exchanger is connected to the cold water tank and / or the hot water tank via an internal circulation pump. The water outlet of the large heat exchanger is connected to the internal circulation return pipe. The refrigerant circuit of the large heat exchanger is connected in parallel with one or more refrigerant heat exchange systems. The external circulation outlet pipe is connected to the hot water outlet pipe via an external circulation pump. This utility model uses multiple sets of refrigerant heat exchange systems connected in parallel through the refrigerant circuit of the large heat exchanger. Simultaneous operation allows for the absorption of heat from the air through refrigerant circulation, resulting in efficient heat exchange with the water circuit and improving the efficiency of cooling or heating functions.

The utility model discloses a high-temperature heat conduction assembly and a semiconductor device. The high-temperature heat conduction assembly comprises a heated member, a heating member and a pressing assembly. The heating piece is connected with the heated piece, and the heating piece is used for generating heat and transferring the heat to the heated piece; one end of the pressing assembly penetrates through the heating piece and is connected with the heated piece, and the other end of the pressing assembly abuts against the side, away from the heated piece, of the heating piece. The heating piece can generate heat and transfer the heat to the heated piece, the heating piece is pressed by the pressing assembly in the heat transfer process, so that the heating piece is pressed towards the direction of the heated piece, and even if the heated piece deforms, stable connection between structures can be kept; therefore, it is ensured that the heating piece can stably transfer heat to the heated piece, and the heat transfer effect is ensured.

The utility model discloses a heat conduction piece for a hot melt glue machine. The heat conduction piece comprises a glue box heat conduction mechanism, through the arrangement of the glue box heat conduction mechanism, when the hot melt glue box heats the internal glue solution, as a heat source is concentrated on the lower layer of the box body, the heat of the lower layer of the box body can be quickly transferred to the upper layer by virtue of the heat conduction pipe group, so that the temperature of the glue solution on the upper layer and the lower layer in the box body is balanced, and the time required for completely heating the glue solution is effectively shortened; the heat exchange mechanism is arranged on the outer surface of the heat conduction pipe set, the contact area between the heat conduction pipe set and the glue solution is increased through heat exchange fins of a heat exchange sleeve, and therefore the heat exchange efficiency is improved, and the heat transfer effect of the heat conduction pipe set is guaranteed.