210 results about "Intermittent heating" patented technology

The invention relates to a method for making mica paper by reinforcement of aramid short fiber and chemical pulping. The method comprises the following steps: cleaning mica flakes to remove impurities; putting the mica flakes to an intermittent heating rotary furnace for calcination to remove a part of crystal water in the crystal of mica and generate remarkable expansion and delamination along the vertical direction of a cleavage plane so as to make the mica loose and flexible; dipping the mica in acid or alkali solution at a certain concentration, delaminating into mica sheets, and classifying the mica sheets into chemical mica pulp with certain beating degree; and adding 3 to 15 percent of aramid fiber (based on the mass of the mica flakes) into the pulp, preparing mica aramid pulp, and making the mica aramid pulp into paper by a paper machine. The framework effect of the aramid improves the strength of the mica paper.

The invention proposes a heating control method of an electromagnetic heating apparatus. The method comprises the steps of detecting a current temperature of the electromagnetic heating apparatus; and performing output power limitation and intermittent heating adjustment on the electromagnetic heating apparatus according to the detected current temperature for enabling the electromagnetic heating apparatus to keep a predetermined temperature interval. By use of the heating control method, the electromagnetic heating apparatus can be subjected to multilevel control, so that the bottom of a pan is slowly heated or cooled during cooking and can be further kept in a specific temperature range, and various cooking demands are better met.

The invention discloses a food processing method of a food processor. The food processing method comprises the following steps: continuously heating food along with periodic low-speed stirring to make sure that heating is more uniform and that materials are not stuck to a base plate; then providing stable heat through intermittent heating to make sure that the materials and water are kept 95 DEG C or hotter and that the materials can be cooked more quickly without overflowing. As the intermittent heating process and the low-speed stirring process are combined, the materials cannot be stuck to the base plate or burnt at the base plate, and can be boiled more uniformly.

The invention relates to the technical field of robots, in particular to an automatic cooking method. The automatic cooking method is characterized by at least comprising the steps that energy is provided for a cooker through a mechanical arm to perform cooker heating control and enable the cooker to be continuously heated in the whole cooking process; the mechanical arm drives the cooker to move among function zones and complete corresponding cooling operations within a plurality of function zones. The automatic cooking method has the advantages that the required different cooling process operations are completed in the different function zones; intermittent heating and temperature-control cooking of the cooker in the spatial moving process are achieved; the duration and degree of heating and a food material adding sequence can be flexibly changed to perform personalized cooking; working zones can be set as required to optimize the cooking process; multiple dishes can be simultaneously cooked according to the demands; food materials are effectively used; the cooking time is shortened, and the cooking efficiency and cooking quality are improved; the robots are simple and reasonable in structure, powerful in function, convenient to use and suitable for popularization.

The invention discloses an abrasive block for high-speed multiple unit trains. The abrasive block is prepared from a composite material composed of phenolic resin, steel fibers, copper-aluminum powder, carbon fibers, tungsten carbide, aramid fibers, iron oxide black, acrylonitrile-butadiene rubber and accelerant. The invention further provides a method for preparing the abrasive block, which prevents the occurrence of high-temperature stress cracks and hot cracks in the process of using the abrasive block by optimizing the component ratio and a processing technique. Moreover, by adopting an intermittent heating method and multiple times of heat treatment, the problems, such as stripping and easy abrasion, which take place in the process of using abrasive blocks at present are optimized.

The invention relates to a preparation method of a nano-grade electro-catalyst based on graphene. According to the method, a templating agent is added into an alcohol solution of graphene oxide; ultrasonic processing is carried out, and the mixture is uniformly stirred and oscillated; a mixed solution of chloroplatinic acid and a transition metal salt is dropped in; the mixture is well mixed and is subjected to an intermittent heating reaction in a microwave oven; the mixture is cooled, and the templating agent is removed by using dilute hydrochloric acid; and pump-filtration and vacuum bake-drying are carried out, such that the nano-grade electro-catalyst with graphene as a carrier is obtained. The catalyst provided by the invention has the advantages of small particles, agglomeration prevention, uniform distribution, simple preparation steps, and short preparation process. The catalyst provided by the invention can be used in alcohol fuel batteries and lithium-air batteries.

The invention provides a welding method aiming at the butt welding of small caliber resistances. The method is applicable to the welding of small caliber steel pipes, wire rods and rings, and also applicable to the contact butt welding of small caliber nonferrous metals such as aluminium and magnesium wire rods and pipe products, belonging to the welding technical field. As stainless steel is slow in heat dissipation, the invention proposes a welding technique with intermittent heating and continuous and uneven heat dissipation. The high temperature plastic zone in the welding temperature field obtained by the process is narrow and can be less affected by the contact resistances; the welding shrinkage can be controlled accurately by the process; the welding line moulding has a beautiful appearance; the strength and the through-hole both meet the requirements, thus greatly improving the qualification rate of products.

The invention provides a clothes drying method and device and a drum-type clothes dryer. The method comprises the steps of controlling a heating part to conduct intermittent heating to make the air inlet temperature of a drum smaller than a preset temperature for drying wool clothes when the drum is loaded with wool clothes; conducting circulating control over the rotation of the drum according toa preset drum rotation cycle till preset stopping conditions are met, wherein during the drum rotation cycle, the drum rotates for a first preset time at a first rotational speed, rotates for a second preset time at a second rotational speed, rotates for a third preset time at a third rotational speed and rotates for a fourth preset time at the second rotational speed, the first rotational speedis greater than the third rotational speed, the third rotational speed is greater than the second rotational speed, and the first rotational speed is the rotational speed when the centrifugal acceleration of the inner surface of the drum is greater than the gravity acceleration. By means of the method, the temperature for drying the wool clothes can be reduced, the wool clothes are evenly mixed bycombining the second rotational speed and the third rotational speed to rotate the drum, and the effect of drying the wool clothes is improved.

The invention discloses a method for synchronously removing the shell and peel of a Chinese chestnut through microwaves. The method comprises the following steps: the shell of the Chinese chestnut is cut, the Chinese chestnut is subjected to microwave processing for the first time, the Chinese chestnut is cooled after the microwave processing for the first time, then, the Chinese chestnut is subjected to microwave processing for the second time, the shell and the peel of the Chinese chestnut are removed after the microwave processing for the second time, and therefore the kernel of the Chinese chestnut is obtained. According to the method for synchronously removing the shell and peel of the Chinese chestnut through the microwaves, the microwaves are used for instantaneous intermittent heating with a high power, as a result, the kernel of the Chinese chestnut shrinks due to dehydration and is separated from the shell and the peel, and the phenomenon that the kernel of the Chinese chestnut is cooked and exploded due to an excessively quick temperature rise in the one-time heating process can be well avoided; meanwhile, the hot Chinese chestnut is cooled for a short time, as a result, water in the shell of the Chinese chestnut is evaporated, brittleness is further improved, and original color and luster, a special flavor and nutrition of the kernel of the Chinese chestnut are guaranteed to the maximum.

The invention discloses a floor radiant heating construction method. The floor radiant heating construction method comprises the first step of structure layer leveling, the second step of heat insulation plate paving, the third step of floor heating pipe installing, the fourth step of steel wire net paving, the fifth step of floor heating pipe, water distributing device and water collecting device connecting, the sixth step of pressure testing and the seventh step of concrete filling layer pouring. Heat is provided through pipelines embedded into the part below a bottom plate instead of a traditional radiator, the using area of a room is increased, a special ground structure is provided, heat insulating plates are arranged between the floor heating pipes and a structure layer, the heat insulating effect is improved, the sound insulation effect is also achieved, and the noise interference to the lower layer from the upper layer is greatly reduced; the heat storing quantity of the ground layer and the concrete layer is large, the indoor temperature change is slow under the intermittent heating situation, the heat stability is good, the indoor temperature is even, and a user can feel comfortable; the floor radiant heating construction method is efficient, energy is saved, operating cost is low, and service life is long.

The invention discloses a low-carbon deep-desulfurization refining method of an LF (ladle refining) furnace, which comprises the following steps of: 1) heating and slagging; 2) power-off forced stirring and deep desulfurization; 3) slag regulation and component adjustment; 4) secondary power-off forced stirring and deep desulfurization; and 5) power transmission temperature regulation. According to the method disclosed by the invention, by optimizing a whole-course argon blowing gas supply model of the LF furnace and dynamically controlling the argon flow in stages, enough argon blowing stirring work is provided to guarantee the desulfurization effect, and violent rolling of steel and slag caused by excessive argon flow in a heating process and consequent contact reaction between steel, slag and graphite electrodes leading to recarburization are avoided; by adopting an intermittent heating mode of alternate power supply and power cut and reallocating the tasks in the power supply period and power-cut period, the stirring intensity is reduced by reducing the argon flow in the power supply period, and recarburization is reduced during desulfurization; and meanwhile, the stirring is enhanced by increasing the argon flow in the power-cut period to finish deep desulfurization. Thus, the deep desulfurization is finished while effectively controlling the recarburization in the whole refining process.

A heat conduction type barometric sensor has high sensitivity and high accuracy that has simple structure and circuit configuration and can measure a barometric pressure in the range of a very low barometric pressure to ≧1 atm using one sensor chip. The sensor includes a cantilever-shaped thin film provided with a thin-film temperature sensor, a heating element, and an excitation element. The excitation element utilizes warpage and bending based on a difference in thermal expansion between two main layers constituting the thin film during intermittent heating by a thin-film heater as the heating element. The two main layers are a silicon layer and a thermally oxidized film of silicon which are significantly different from each other in the coefficient of thermal expansion. A circuit in which the sensitivity is enhanced by the integration of a seebeck current for a predetermined period of time can be also provided.

The invention is applicable to the field of household appliances, and provides a power control method and device for an electromagnetic heating device and an electromagnetic heating device, wherein the power control method is applied to an electromagnetic heating device of a half bridge topology. The method comprises the following steps of: obtaining a target power and a preset power, and comparing the target power with the preset power; and if the target power is less than or equal to a preset power, adjusting a duty ratio of a PWM control signal to enable the current actual power of the electromagnetic heating device to reach the target power. The power control method for the electromagnetic heating device provided by the invention achieves the purpose of outputting low power of the electromagnetic heating device by reducing the duty ratio of the PWM control signal when the target power is less than the preset power, without intermittent heating, so as to make food boiling and cooking better and give users a better experience.

The invention discloses a stir-fry machine and a porridge cooking control method thereof. The stir-fry machine comprises a heating assembly, a cooking cavity and a stirring shovel extending into the cooking cavity, wherein the stirring shovel is used for turning over cooking food materials that are placed in the cooking cavity up and down. The porridge cooking control method comprises the steps: agradient type temperature rising stage: controlling the heating power of the heating assembly to heat in a gradient descending mode, and controlling the stirring shovel to turn over the cooking foodmaterials in a first rotating mode; and a boiling porridge cooking stage: controlling the heating power of the heating assembly to heat in an intermittent heating mode, and turning over the cooking food materials up and down by the stirring shovel in a second rotating mode until the cooking is finished. According to the invention, in the stirring process, the food is gelatinized, the viscosity ismoderate, the taste of a user is good, and the pot overflowing phenomenon in the porridge cooking process can be avoided by combining segmented and stepped heating with stirring.

The invention aims to provide an energy-saving steam generation device with an adaptive water supply function and low cost, and a control method thereof. The steam generation device comprises a shunt valve, a return pipe, at least one heating pipe, a steam-water separator and a control circuit, wherein the heating pipe is arranged between the steam-water separator and the shunt valve; a water inlet is reserved in the shunt valve; a one-way valve for controlling fluids to flow to the heating pipe from the water inlet is also arranged in the shunt valve; and the heating pipe comprises at least one intermittent-heating pipe I. The invention also discloses a household electric steam box comprising the steam generation device. The household electric steam box has the advantages of energy saving, adaptive water supply, low cost, no need of seal between a water storage tank and the steam-water separator, convenient design of appearance and internal structure, and convenient use.

The invention discloses a modular partition hot air circulating-type bituminous pavement heating machine which comprises a rack (1). A driving cab (10), an air tank assembly (3), a fuel tank (2) and apower device (4) are arranged above the rack (1) from front to back, and the left side and the right side of the power device (4) are provided with gasification devices (9). The front end and the rear end of the rack (1) are each movably connected with a set of heating walls (6) through a heating wall lifting and overturning swing frame assembly (7), and the position, between a front axle and a rear axle, of the lower portion of the rack (1) is movably connected with a set of heating walls (6) through a heating wall lifting sliding frame assembly (8). According to the modular partition hot air circulating-type bituminous pavement heating machine, the modular partition heating temperature is accurately controlled, and uniformity of the whole heating face is ensured; the machine has the good adaptability to large curve construction, large angle climbing, site-transferring transporting and the like; and modular heating wall variable-power and intermittent heating and machine-group control are achieved, the heating efficiency is high, the heating depth is large, and the adaptability to the disease damage working condition is high.

The invention relates to the technical field of intermittent heating, in particular to a heat exchanging device based on phase-change heat storage material and a packaging method of the heat exchanging device. The purpose is to solve the problem that a shell of the heat exchanging device is expanded and damaged due to volume expansion of the phase-change heat storage material in the phase change process. The device comprises a closed shell used for containing the phase-change heat storage material, and at least one expansion partitioning part used for expansion deformation is arranged in the shell. The packaging method mainly includes the steps that an upper cover face shell body of the shell is opened, and the expansion partitioning part is inserted in the shell and fixed; the upper cover face shell body is sealed after covering, and then a hole plug of a vent hole is pulled out, so that a communication device is formed in the shell partitioned by the expansion partitioning part through a communication hole formed in the expansion partitioning part; a funnel is erected on a feed port, a discharge port is sealed, the phase-change material in a liquid state is injected from the funnel, after the shell is full, the hole plug is plugged, and the feed port is sealed to complete packaging. The heat exchanging device has the advantages of being high in heat storage and conduction efficiency, convenient to package, capable of being used repeatedly, long in service life and the like.

The invention relates to a distributed-type intermittent heating controlling system, which belongs to the field of the building heat supplying system controlling technology. The heating controlling system aims to solve the energy wasting problems universally existing in the heat supplying operation in the northern cities that the Working Pressure Head is Redundant, the Temperature Difference is Small and the Flow is Large and the prior situation that the energy conservation force application point with enforcing actions is lack in the mixing network with different heat requirements. The purpose that the heat source intermittent heating and the continuous cycling heat supplying to the heat user according to the requirements are combined is realized through the distributed-type transportation and distribution controlling design, thereby the temperature difference of the supply and return water is enlarged, the flow of the systematic pipe network is reduced, the redundant working pressure head is decreased or eliminated, the different heat requirements of the heat user group at the different time interval is satisfied, and paving the way for adopting the measurement method according to the individual household. The enormous energy-saving space under the prior operation condition is converted into the distinct energy-saving reality through supplying the concrete force application point. The distributed-type intermittent heating controlling system has the advantages that the energy conservation effect is obvious, the heat supplying security is good, the adjustability is strong, and the heat controlling system is suitable for the new-building system and the reconstruction of the old system.