3235 results about "Heating power" patented technology

A method and apparatus for providing welding type power is disclosed. The power source is capable of receiving any input voltage over a wide range of input voltages and includes an input rectifier that rectifies the ac input into a dc signal. A dc voltage stage converts the dc signal to a desired dc voltage and an inverter inverts the dc signal into a second ac signal. An output transformer receives the second ac signal and provides a third ac signal that has a current magnitude suitable for welding, cutting or induction heating. The welding type current may be rectified and smoothed by an output inductor and an output rectifier. A controller provides control signals to the inverter and a controller power supply can also receive a range of input voltages and provide a control power signal to the controller, and a voltage independent of the input voltage.

A flow-through muffler includes a plurality of heat conducting walls, baffles, or partitions that together define a plurality of passages arranged to form acoustic waveguides, attenuators, and/or cancellation chambers, the walls, baffles, or partitions increasing a surface area exposed to the exhaust gases to facilitate extraction of heat while attenuating or canceling the resulting sound pressure waves. The muffler may have a cooling arrangement mounted thereon, and thermoelectric generator elements or other heat-powered device, such as a reformer, connected across the heat differential between the cooling arrangement and an exterior surface of the muffler housing that is in thermal contact with the heat conducting walls, bafflers, or partitions. In addition, the muffler may be made tuneable by providing a device for varying a length of one of the passages relative to another passage, and by including a sound cancellation chamber at an intersection of the passages. In addition, the internal surfaces of the muffler may be coated with a catalyst to provide a combination muffler and catalytic converter.

The invention, which belongs to the grid-connected optimization operation field of the new energy, relates to a combined system energy optimization method with consideration of wind power consumption; and thus in order to solve a wind curtailment problem, the combined system energy optimization method uses a cogeneration system based on combined operation of a wind power-electric energy storage-heat accumulating type electric boiler and takes economic optimum as an objective to reduce the wind-curtailment power effectively by increasing the load space. To be specific, the method comprises the following steps: (1), establishing an overall system framework including a conventional thermal power generating unit, a cogeneration unit, a wind turbine generator, an electric energy storage and heat accumulating type electric boiler; (2), carrying out comprehensive modeling of a cogeneration system; (3), establishing an optimal economic objective function; (4), establishing a power and heating power balancing relationship and operational constraints of all units during the operation period of the cogeneration cooperation system; and (5), carrying out optimization for active power outputs of all units. Therefore, development and utilization of the wind power are promoted; and power supply reliability of the power system is improved. The method can be applied to large-scale-wind-power-included provincial companies of all stages and has the broad application prospects.

The invention provides a temperature probe, a cooking device and a heating control method. The temperature probe comprises a probe, a hardware box and a clamp, wherein a temperature sensor is arranged in the probe, is inserted into food and/or soup to detect the temperature and wirelessly sends a temperature detection signal to a controller of the cooking device through a probe wireless transmission device, so that the controller judges whether the cooking degree of food and heating firepower are proper according to the temperature detection signal and adjusts the heating power of the heating device to improve the cooking effect if the heating firepower is judged to be improper. The temperature of food and soup is detected by the temperature probe, whether the cooking degree of the food and the heating firepower are proper is judged according to the detected temperature signal, and the judgement mode is more reliable than that according to food color and appearance change. The problem that cooked food is not yet done or overdone due to misjudgment by a user can be effectively solved, and the user can more easily obtain nutritional and delicious food.

An electronic cigarette and a method for supplying a constant power therein, the electronic cigarette comprises an atomizer with a heating wire. The electronic cigarette also comprises a power supply module for supplying power to the heating wire to heat the heating wire, and further comprises a microprocessor, a detecting module connected to the microprocessor, and a voltage adjusting module. A preset constant power can supply to the heating wire of the atomizer in the electronic cigarette, so that a consistent heating power can be applied to each of the electronic cigarettes produced in batch production, and smoke amount and flavor of each of the electronic cigarettes are more consistent, thereby better meeting demands of consumers.

The invention provides an integral forming method of a large size thin-walled titanium alloy cylindrical part without a welding line. The integral forming method comprises the following steps of: (1) tube blank preparation by stamping; (2) high-temperature vacuum heat treatment; (3) heating power spinning thinning; (4) unheating power spinning diameter expanding; (5) repetitive and alternate conduction of steps (3) and (4) for 2-3 times; (6) high-temperature vacuum heat treatment; (7) finish turning treatment; and (8) stabilizing treatment. The integral forming method prepares the large size thin-walled titanium alloy cylindrical part without the welding line (wall thickness is 1-7mm) which has high precision and high performance by utilizing titanium alloy plates and adopting a composite technique combining a stamping method, a spinning method and a stabilizing treatment method, and solves the problems of low material utilization ratio, having longitudinal welding lines, low precision of tube performance and the like in the forging and roll bending welding forming of the large size titanium alloy thin-walled tubes.

The invention belongs to the field of pans, and particularly discloses a smart pan comprising a pan body, a handle, a thermocouple and a pan controller. The thermocouple is assembled to the bottom of the pan body, and the pan controller is disposed within the handle. The pan controller acquires the corresponding cooking program, the cooking program is configured with the set value of the pan temperature associated with time, the measured value of the pan temperature based on thermocouple detection and the set value of the pan temperature obtained from the cooking program are processed to generate a control signal for manipulating a heating unit for heating the smart pan and changing the strength of heating power of the heating unit, the measured value of the pan temperature is enabled to reach the set value of the pan temperature till the cooking program is totally executed by the pan controller, and food cooking is finished. Throughout the cooking process, the smart pan manipulates the heating unit based on the acquired cooking program, the temperature of the smart pan is controlled automatically, food cooking is completed without user participation, and users can make delicious food either with or without cooking skills.

The invention provides a multifunctional pot which comprises a heating part and an inner pot, wherein the heating part comprises a main body; a heating body, a temperature measurement assembly and a control panel assembly capable of controlling the heating power of the heating body are arranged on the main body; the control panel assembly is electrically connected with the heating body and the temperature measurement assembly, to receive a temperature signal transmitted by the temperature measurement assembly; the inner pot is placed on the heating body of the main body; the temperature measurement assembly is in contact with the outer side wall of the inner pot, to detect the temperature of the inner pot; an insulation main body connection head is arranged on the main body; a conductive terminal electrically connected with the control panel assembly is arranged in the insulation main body connection head; a temperature measurement device for detecting the temperature in the inner pot is arranged on one side of the inner pot, and can be electrically connected with the conductive terminal on the main body. The multifunctional pot disclosed by the invention can meet various cooking requirements, so that the cost can be lowered for a user.

The invention provides a steam generator which comprises a furnace body, a water tank and a water pump. An electric heating device is arranged in the furnace body. A steam outlet pipeline is arranged on the upper portion of the furnace body. The water tank is provided with an inlet pipe. The electric heating device comprises a left pipe box, a right pipe box and a floating coiled pipe. A first electric heater is arranged in the left pipe box, a second electric heater is arranged in the right pipe box, the first electric heater and the second electric heater are in data connection with a controller, the controller is connected with a cloud server, and the cloud server is connected with a client side. The measured heating power of the first electric heater and that of the second electric heater are transmitted to the cloud server through the controller and then transmitted to the client side through the cloud server, the client side is a mobile phone, an APP is installed in the mobile phone, and a user can select a working mode of automatic control or manual control at the client side. Operation of the steam generator is monitored through the mobile phone APP, and the intelligent control that the steam generator is remotely monitored is achieved.

The invention relates to an electric cooker and a porridge-cooking control method thereof. In the electric cooker, a temperature memory is preset with a second temperature T2 and a third temperature T3 and T2 is less than or equal to T3; a time memory is preset with a first boiling time t3 and a second boiling time t4; a heating power memory is preset with a second power ratio B, a third power ratio C and a fourth power ratio D corresponding to rice quantity grades; a main controller is provided with a control module; after the electric cooker is used for heating and finishes the first boiling time t3 by the second power ratio B at the boiling stage, a heating device is controlled to heat by the third power ratio C or the fourth power ratio D according to a ratio of an upper cover temperature T to the second temperature T2 and the third temperature T3 until the set second boiling time t4 is met. Heating power is changed according to the upper cover temperature at the boiling stage, so the defect that rice and water are not boiled completely under low voltage or low environmental temperature is overcome, and the porridge-cooking effect is effectively improved.

The invention discloses a cooking control method of an electric rice cooker. The electric rice cooker comprises a cooker body, an inner container arranged in the cooker body, an upper cover, a heating device, a bottom temperature measurer, an upper cover temperature measurer and a control device used for controlling rice cooking work and arranged on the cooker body, wherein the control device comprises a main controller as well as a first timer, a second timer, a rice-water volume level storage, a temperature storage, a time storage and a heating power storage which are respectively connected with the main controller, and a plurality of powers are preset in the heat power storage. A method for controlling the rice cooking of the electric rice cooker by the control device comprises a heating stage, a boiling stage and a cooking stage. The control device controls the heating device to heat until boiling by using gradually reduced powers. In the invention, the gradually reduced powers are adopted for heating unit boiling at the heating stage, and meanwhile, a boiling state is judged according to the bottom temperature, thus, not only is the problem that a small amount of rice is easy to overflow and be ebullient avoided, but also a large amount of rice can be sufficiently heated to reach the boiling state, and the heating time is effectively controlled.

The invention relates to a method of high-temperature flue gas drying, which is particularly suitable for drying long flame coal, brown coal or other low rank coal. The coal-fired high-temperature flue gas is used to dry flammable and explosive coal types, such as brown coal in the direct contact method; therefore, the method has less gas exhaust, high thermal efficiency and high drying speed. The internal water content of the dried coal is obviously reduced, and the heating power of the dried coal is greatly increased. The invention also relates to the device using the method.

Provided is an electric pressure pot. The electric pressure pot includes a pot body, a pot cover, a cooking control system, a heating device and a pressure adjusting device; the pot body includes an outer pot body and an inner pot body for containing food to be cooked; the pot cover is arranged on the pot body; the cooking control system includes a control panel and a control plate for receiving input information of the control panel; the heating power of the heating device is controlled by the cooking control system, and the maximum heating power of the heating device is 1400 watts or above; by the adoption of the pressure adjusting device, the control panel can select a certain cooking program which includes a high-temperature pressure maintaining stage, and in the high-temperature pressure maintaining stage, the pressure adjusting device controls the pressure inside the inner pot to be in the range from 80 kPa to 110 kPa, so that when cooking ribs, the electric pressure pot can make rib meat separated from rib bone in a preset time duration. By the adoption of the technical scheme, the problems are solved that after electric pressure pots in the prior art are applied, cooked food is poor in mouthfeel and poor in tasty effect.

The invention provides a split type electric pressure cooker. The split type electric pressure cooker comprises a heating bottom disc, a control panel assembly, a thermosensitive temperature-sensing element and a pressure cooker body, wherein the heating bottom disc is provided with a main body and a bottom cover, a microcrystal plate is stored at an upper opening of the main body, a coil disc, a fan and a power panel assembly capable of adjusting the heating power of the coil disc are arranged in an inner cavity of the main body, and the bottom cover and a lower opening of the main body are correspondingly buckled; the control panel assembly is installed on the side wall of the main body, and the power panel assembly is electrically connected with the control panel assembly; the thermosensitive temperature-sensing element can be installed between the microcrystal plate and the coil disc in an extensible mode, the upper end of the thermosensitive temperature-sensing element extrudes out of the upper surface of the microcrystal plate, and the thermosensitive temperature-sensing element is electrically connected with the power panel assembly; and when the pressure cooker is placed on the microcrystal plate of the heating bottom disc, the bottom of the pressure cooker is in contact with the upper end of the thermosensitive temperature-sensing element correspondingly. According to the split type electric pressure cooker, combination work can be achieved, separate using can also be achieved, and the competitiveness of the product in household appliances is improved.

The invention discloses a heat-power conversion magnetism device. The heat-power conversion magnetism device includes a magneto caloric effect material so that the magnetic field thereof can be changed according to the temperature difference. The heat-power conversion magnetism device rotates by changing the magnetic field of the magneto caloric effect material.

The invention discloses an environment-friendly plastic pipe fusion bonding method which comprises a magnetic conductivity material net (203) of a plastic pipe fusion bonding material and a portable type electromagnetic heating device. The magnetic conductivity material net (203) is placed in the middle of a flared pipe (201)and a straight cutting pipe (202) of a plastic pipe, and the portable type electromagnetic heating device is spliced on the exterior of the flared pipe (201) of the plastic pipe; the portable type electromagnetic heating device transfers high frequency electromagnetic pulse heating power to act on the magnetic conductivity material net (203) so as to generate vortex to heat, the heat can generate partial fusion with a contact surface of a contacting part, and the fusion splice of the plastic pipe is finished; the portable type electromagnetic heating device drives an electromagnetic heating belt (204), and the heating of the magnetic conductivity material net (203) is finished in step by step; and the fusion splice of the plastic pipe is repeatedly performed for many times, and the splice quality is guaranteed. The plastic pipe fusion bonding method provided by the invention is also suitable for plastic board materials.

A fixing member, a power detector, and a controller are included. The fixing member is heated by a heating unit that generates heat when power is supplied by a commercial power and a capacitor. The power detector detects energy of power stored in the capacitor. The controller performs an identical control to reduce number of copies of an image formed (fixed) per minute (CPM) to a predetermined number (40 CPM) in any of three cases in which the energy is less than a threshold for starting electric discharge when a plurality of recording mediums is continuously passed through the fixing member, in which a cardboard paper is continuously passed, and in which an amount of data of an image to be transferred on the recording medium is large.

The invention relates to a temperature cascade PID (Proportion Integration Differentiation) control system of a high-temperature high-pressure testing device and a control method thereof. A high-temperature autoclave for test is used for simulating the temperature, the pressure and other parameters of a stratum environment and carrying out detection test on performances of an instrument working in an environment similar to the stratum environment. The temperature cascade PID control system comprises a hot air mixed heating module, a heating power supply module, a fan circulating module and a temperature measurement and control module; a heating area of the hot air mixed heating module is divided into three temperature measurement areas, i.e. a target temperature measurement area, a safetytemperature measurement area and a hearth temperature measurement area; the target temperature of which an output signal is transmitted to an inner ring auxiliary control PID control circuit after operated and processed through an outer ring main control PID control circuit is compared with a safety temperature for operation processing, and the output signal is amended by a temperature control coefficient and converted into a simulation control signal which is output to a power adjusting device for adjusting the output power of the heating power supply. Three temperature control areas in the invention realize the accurate control on the test temperature in the autoclave by using a cascade control method according to the requirement of a process curve of raising, preserving and reducing the temperature.

The invention discloses a temperature control method of electric heating kitchenware, which comprises the following steps of: starting a heater and coming to a heating temperature rise period, when the temperature of an inner pot reaches first upper limit temperature value A1 of the inner pot or the temperature of the heater reaches first upper limit temperature value B1 of the heater, driving the heater by a controller to reduce heating power or stopping heating, and making the heater come to a constant temperature heating period; when the temperature of the inner pot is reduced to constant temperature target temperature T1 and the temperature of the heater is lower than second upper limit temperature value B2 of the heater, driving the heater by the controller to increase heating power; and when the temperature of the inner pot is increased to constant temperature target temperature T1 or the temperature of the heater reaches second upper limit temperature value B2, driving the heater by the controller to reduce heating power or stopping heating. In this way, the temperature control method not only realizes simple control structure and smaller consumed electric power, but also makes food cooking temperature T0 remain unchanged substantially. Due to the above characteristics, the temperature control method can be applied to the electric heating kitchenware such as general electric rice cooker, soup pot, oven and the like.

The invention relates to a method and a system for preventing condensation, wherein the heating power of a heater strip and the corresponding temperature and humidity information are stored into a foundation database to construct a condensation-prevention foundation database; the method for preventing condensation comprises the following steps: setting up the foundation database of temperature, humidity and heating power, and controlling the heater strip to heat at the corresponding power according to the control power in the foundation database corresponding with the specific temperature andhumidity; and the system for preventing condensation comprises a temperature sensor, a humidity sensor, a heating device and a master control board, wherein the master control board is provided with the foundation database. Thus, at the specific temperature and humidity, the heater strip works at the control power corresponding with the temperature and humidity at the same time in the foundation database, the energy consumption can be reduced effectively, and the working efficiency can be improved.

The invention discloses a three-dimensional (3D) metal printer. A printing head integrating a ceramic melting furnace and a liquid metal ejector is a key technology for the 3D metal printer. The printing head is made of high temperature resistant ceramic or graphite material, a water cooling eddy current coil is installed on an outer layer, the melting furnace is filled with inert gas to protect liquid metal, and the ejector is a reciprocating type plunger pump. The water cooling eddy current coil is electrified with high-frequency current, and heating power can be adjusted through a high-frequency controller according to factors such as material types, model requirements and processing speeds. The inert gas keeps a certain pressure while protecting the molten metal, flow of the liquid metal is facilitated, and metal residue in the plunger pump and the melting furnace is removed by means of gas simultaneously during shutdown. Besides application to the 3D metal printer, the printing head can also be used for devices for die-cast molding and injection molding of metal material and the like.

Method and apparatus for providing harmonic inductive power, and more particularly for delivering current pulses providing a desired amount of pulse energy in high frequency harmonics to a load circuit for inductive heating of an article. By controlling the shape and/or frequency of such current pulses, the apparatus and method can be used to enhance the rate, intensity and/or power of inductive heating delivered by the heater coil and/or to enhance the lifetime or reduce the cost and complexity of an inductive heating power supply. Of particular significance, the apparatus and method may be used to significantly increase the power inductively delivered to a ferromagnetic or other inductively heated load, without requiring an increase of current in the heater coil. This enables new heating applications, and in some known applications, decreases the energy consumption or cooling requirements and/or increase the lifetime of the heater coil.

The invention provides a condensation heat-transfer experiment device capable of realizing the coupling of natural circulation and forced circulation. The condensation heat-transfer experiment device mainly comprises a steam supply system, an air supply system, a helium gas supply system, a natural circulation cooling system, a forced circulation cooling system, a condensing experiment body and a data measurement and acquisition system. The non-condensable gas containing extra-steam-pipe external condensation heat transfer experiment research under natural circulation and forced circulation cooling conditions and the experiment research on the heat extraction and flow characteristics of a natural circulation system under the conditions that the heating power is stable and changed can be realized. The device can monitor the experiment data in real time and continuously measure the condensation characteristics under different mixed gas compositions, and therefore, the device carries out measurement accurately and carries out data processing rapidly. In addition, the degree of visibility of a whole system is extremely high; and through the observation on experimental phenomena, the understanding on experimental processes and the in-depth study on heat transfer and flow mechanisms are facilitated.

The invention discloses a control method and device of an electric water heater and an electric water heater. The control method comprises the steps of obtaining the outlet water temperature, inlet water flow and inlet water temperature of the electric water heater at a current sampling time point, judging whether the outlet water temperature is up to the heating temperature set by a user or not, calculating the deviation control amount of the outlet water temperature at the current sampling time point and obtaining corresponding heat power gears according to the deviation control amount of the outlet water temperature, the inlet water flow and the inlet water temperature if the heating temperature set by the user is not reached, obtaining the heating power of the electric water heater at a previous current sampling time point adjacent to the current sampling time point, adjusting the heating power according to the heat power gears and controlling the electric water heater according to the adjusted heating power. By means of the control method, the corresponding heating power is adjusted according to the outlet water temperature, the inlet water flow and the inlet water temperature corresponding to the electric water heater, resource waste caused by heating at fixed heating power is avoided, and energy is saved.

The invention relates to a converging type solar thermal power device capable of condensing sunlight, storing heat using high temperature phase change energy storage material and driving double loops, belonging to the technical field of solar energy collection and solar energy heat utilization. The device comprises a funnel-shaped converging type solar energy condenser, a transparent light transmitting window, an energy accumulator, a high temperature heat-conducting oil heat supply circulating system, a superheated steam generator, and a Rankine cycle-based heat-power converting system. The sunlight is condensed by the funnel-shaped converging type solar energy condenser, and entered into the energy accumulator through the transparent light transmitting window to realize high temperature storage therein, the high temperature heat-conducting oil heat supply circulating system transmits the high temperature in the energy accumulator to the superheated steam generator to heat working fluid to generate high pressure high temperature superheated steam therein, and converts heat energy to power through thermodynamic cycle. The invention is a device for supplying power or electric energy for user by condensing sunlight, storing heat using high temperature phase change energy storage material, and driving heat-power converting system using high temperature heat energy.

An air-conditioning system for a building comprises a hot water distribution circuit (10), a cold water distribution circuit (12) and several terminal air conditioning units (14). Each of these terminal air conditioning units (14) comprises a fan (40) for blowing air in a space of the building, a heating coil (42) connected to the hot water distribu-tion circuit (10) and/or a cooling coil (44) connected to the cold water distribution circuit (12). At least one ambient temperature control system allows to control heating power of the heating coils and cooling power of the cooling coils. The system further includes a calorific energy management system (80) with a heat pump for transferring calorific energy: a) from the cold water distribution system to the hot water distribution system; b) from the cold water distribution system to atmosphere; and c) from the atmosphere to the hot water distribution system. The calorific energy management system (80) is capable of managing the calorific energy transfers with a three level control system so as to optimise energy consumption.

The invention relates to a sensor for detecting gas, in particular to an MEMS (micro-electromechanical system) semiconductor gas sensor. The MEMS semiconductor gas sensor comprises a substrate with a hollow part and a sensing module which is formed on the substrate, wherein the sensing module comprises a first insulation layer, a heating resistor, a second insulation layer, a test electrode and a gas sensitive layer, which are sequentially superimposed; the sensor also comprises a control module and a temperature detection module, wherein the temperature detection module, the heating resistor and the test electrode are respectively connected with the control module; the temperature detection module is used for detecting ambient temperature and feeding the ambient temperature back to the control module, the control module adjusts the heating power of the heating resistor according to the ambient temperature so as to control the temperature of the gas sensitive layer to be increased to the needed working temperature. By adopting the sensor, the adverse effect of the variation of the ambient temperature on the gas sensitive layer can be reduced and even eliminated, and the performance of the gas sensor is guaranteed. The invention also provides a manufacturing method of the gas sensor and a detection method based on the sensor.

The invention relates to a heat-storage heat-power co-generation unit and electric boiler based wind curtailment absorption coordinated dispatching model. The model is characterized in that on the basis of analyzing a working principle of a heat-storage heat-power co-generation unit, it is proposed to calculate a heat supply amount of an electric boiler maximally absorbing wind curtailment electric energy, and different working modes of a heat storage apparatus and the economy of heat-storage heat-power co-generation and electric boiler coordinated heat supply are compared. A calculation result shows that the heat supply of the electric boiler has optimal economy during maximal wind curtailment absorption. According to the model, the wind curtailment absorption space of a power grid can be further expanded, the dispatching cost can be reduced, and a scientific basis can be provided for a power grid dispatching department to make a day-ahead dispatching plan.

The invention relates to a thermal-force coupling fatigue test device and method, belonging to the field of metal material performance test and analysis. The device comprises a tested material test sample, a cold-thermal fatigue system and a stress fatigue system, wherein the test sample comprises a clamping section, a test section and a transition section; the cold-thermal fatigue system comprises a high frequency induction coil, a rotary seal device, a flow pump, a temperature sensor, a heating power supply, a cooling medium pipeline and a control system; and the stress fatigue system mainly comprises a driving rotating fixture, a driven rotating fixture, a transmission gear, a motor and a motor control system. The method comprises the following steps of: connecting and fixing the test sample with the cold-thermal fatigue system and the stress fatigue system, and carrying out cold-thermal fatigue while stress fatigues under different stresses are carried out to obtain a curve which shows variation of stress fatigue life along with cyclic stress; and adjusting parameters of the cold-thermal fatigue, thus influence of cold-thermal fatigue temperature to fatigue limit can be obtained.

The invention provides an automobile capable of intelligently starting an electric heating device. The automobile comprises a heater, a water tank, a heat exchange device and the electric heating device, wherein the heat exchange device is connected between the heater and the water tank; water in the water tank enters the heat exchange device through an inlet pipeline of the heat exchange device, is heated in the heater and then enters the water tank through an outlet pipeline of the heat exchange device; the water tank is internally provided with a temperature sensor, and the temperature sensor is used for measuring the temperature of the water in the water tank; the temperature sensor, the electric heating device and a controller are in data connection; when the heater works, the controller controls starting and/or heating power of the electric heating device according to the water temperature measured by the temperature sensor. According to the automobile provided by the invention, by intelligently starting the electric heating device, constant temperature for heating the water tank is ensured, normal running of the electric heating device is ensured, and an automobile heating and heat exchange system is suitable for being used by various large-scale electric vehicles.