1109 results about "Induction cooking" patented technology

An outdoor multi-method cooker for preparing a wide variety of different foods at the same time using selective convection, radiant, or conduction cooking operations with or without smoke, or combinations thereof, using a single heat source. The cooker has a horizontal central longitudinal chamber with a firebox at one end and a pair of stacks at the opposed end, a main oven, a pair of lateral smokeless ovens, a warming compartment, and a griddle above the firebox, all disposed transversely on the longitudinal chamber in parallel spaced relation, and a steam table along the upper portion of the longitudinal chamber. The cooker operates on the principle of equalization of natural differential pressures caused by rising warmer air, similar to the draw created by the upper portion of a fireplace, for drafting hot gases or smoke laden hot gases from the combustion source and selectively routing it through passageways into and around the various components.

An induction cook top with a heat management system is disclosed. The heat management system controls heat produced both internally by the electronic components within the cook top as well as heat produced above the cook top when cooking. The heat management system provides improved air flow past and around the internal electronic components. The cook top features an efficient removal of generated heat and may optionally provide a vented housing and direct airflow into and out of the housing or provide a thermoelectric cooling device which permits a ventless housing.

The invention discloses an electric cooker comprising a double-layer boiler body with a handle and an electromagnetic oven body, wherein the boiler body comprises a first temperature sensor, a first temperature measuring circuit, a wireless signal transmitting circuit and a direct-current power supply, and the electromagnetic oven body comprises a wireless signal receiving circuit, a temperature control circuit, a drive circuit, an electromagnetic coil and a power circuit. The invention adopts the technical scheme that the temperature sensor is arranged on the boiler body, the temperature control circuit receives temperature signals on the boiler body and controls the output power of the drive circuit according to the temperature signals of the boiler body so as to control the heating temperature of an electromagnetic oven, and then the precise temperature control on heated foods can be realized. In addition, the electromagnetic oven body also comprises a second temperature sensor and a second temperature measuring circuit; and the temperature control circuit can also receives the temperature signals of the electromagnetic oven body and controls the output power of the drive circuit according to the temperature signals of the electromagnetic oven body, thereby realizing the control on the heating temperature of the electromagnetic oven.

An indoor or outdoor induction cook top with a heat management system is disclosed. The cook top controls heat generated by various components, including the electronic controller, mechanical controls, and the induction generators. The heat management system provides precise temperature control and an efficient way of removing heat from the cooktop. The cook top construction provides the ability to incorporate a smooth ceramic glass cook top and a number of induction hobs in multiple arrangements. The cook top also features a reduction in the number of components, the efficient removal of generated heat, the reduction of noise, an increase in performance and a barrier airflow director. Consequently, the cook top may be installed in a countertop without the need for venting above the counter.

The invention discloses a heating device for an electromagnetic oven. A main control chip module (10) connected with a heating control circuit is arranged in a furnace body (1), and a circuit coupling interface A (3) of the heating control circuit is arranged in the furnace body. The pot body (2) is provided with a sensor module (40), and the bottom of the pot body is provided with a circuit coupling interface B (4) electrically connected to the sensor module; when the bottom of the pot body is seated on the top of the furnace body, the circuit coupling The interface B joins the circuit coupling interface A, so that the main control chip module can be electrically connected to the sensor module to control heating. The electromagnetic oven in the electromagnetic oven heating device of the present invention can be used alone or in combination, has complete functions, and saves the separate placement space of the electromagnetic oven. The assembly structure conforms to the user's usage habits, and through the setting of the pot body assembly detection module and the switch circuit module, it can detect whether the pot body is assembled in place during assembly, and realize short-circuit protection to prevent damage to the main control chip, and the equipment is safe and reliable.

The invention discloses a control circuit for cookware material judgment and a method thereof. The method comprises the following steps: when an electromagnetic heating device works, a control unit controls an IGBT (Insulated Gate Bipolar Transistor) so as to enable a heating unit to heat; a signal generating unit outputs pulse signals to an MCU (Micro Controller Unit) of the control unit correspondingly according to the on/off state of the IGBT; the MCU records the input pulse signals and converts the pulse signals into frequency M; the frequency M is compared with preset frequency threshold N, and the type of cookware is determined to be A when the frequency M is higher than the preset frequency threshold N; the type of the cookware is determined to be B when the frequency M is less than or equal to the preset frequency threshold N; and the MCU adjusts related heating parameters according to the determined type of the cookware, so as to enable the electromagnetic heating device to adjust a heating state. The control circuit and the method have the advantages that an electromagnetic oven can be adjusted into a working state corresponding to the material of the cookware, the material of the cookware is judged in good time so as to carry out error check, and the like; and the material of the cookware is accurately updated so as to adjust the heating state and increase the heating efficiency.

The invention relates to the technical field of electromagnetic oven heating and provides electromagnetic heating equipment. The electromagnetic heating equipment comprises an electromagnetic heating unit, an infrared heating unit and an MCU. The MCU is connected with the electromagnetic heating unit and the infrared heating unit and is used for controlling the electromagnetic heating unit and the infrared heating unit to conduct heating separately or simultaneously. The electromagnetic heating equipment comprises the electromagnetic heating unit and the infrared heating unit, therefore, heating appliances with different materials can be heated, and application of the electromagnetic heating equipment is wide and not limited. In addition, the electromagnetic heating equipment comprises the infrared heating unit, and hence the maximum heating power of the electromagnetic heating equipment is not limited by the maximum heating power of a coil disc.

The invention relates to a one-key intelligent cooking induction cooker comprising a cooker body. The one-key intelligent cooking induction cooker is characterized in that the cooker body is providedwith a function key; the cooker body is internally provided with a power unit, a temperature detection unit, a timing unit, a behavior judgment unit, a cooking control unit and a temperature compensation unit, and the signal output end of the function key is connected to the control signal input end of the power unit and the signal input end of the timing unit; the signal output end of the temperature detection unit and the signal output end of the timing unit are each connected to a signal input end of the behavior judgment unit, and the signal output end of the behavior judgment unit is connected to the input end of the cooking control unit and the input end of the temperature compensation unit; the output end of the cooling control unit is connected to the feedback input end of the power unit, so that a close control loop is formed; the behavior judgment unit is provided with a logical judgment structure for sensing cooking behaviors, types of cooking ingredients and food cooking degree, so that a one-key intelligent cooking structure is formed. The one-key intelligent cooking induction cooker has the characteristics of the simple structure, easy operation, various dishes and the like.

PCT No. PCT/JP97/00792 Sec. 371 Date Sep. 11, 1998 Sec. 102(e) Date Sep. 11, 1998 PCT Filed Mar. 13, 1997 PCT Pub. No. WO97/34446 PCT Pub. Date Sep. 18, 1997A high-frequency inverter having a simple circuit construction capable of executing a constant-frequency operation and a zero-volt switching operation and an induction heating cooker using the high-frequency inverter are disclosed. The high-frequency inverter is comprised of an inverter circuit for converting a direct current from a DC power source into a high-frequency current and a control circuit for controlling the inverter circuit. The inverter circuit is comprised of: a one-transistor inverter constructed of a heating coil whose one terminal is connected to one terminal of a DC power source, a first switching element connected in series between the other terminal of the heating coil and the other terminal of the DC power source, and a first resonance capacitor connected so as to form a resonance circuit with the heating coil; and a series circuit connected in parallel with the heating coil and constructed of a second switching element and a second resonance capacitor.

The invention relates to an induction cooker control circuit suitable for cookers of different materials. The induction cooker control circuit comprises an IGBT (Insulated Gate Bipolar Translator), an IGBT driving module, an LC (Launch Control) resonance circuit, a central processing unit, a synchronous sampling circuit and a sampling circuit, wherein the LC resonance circuit is connected with the IGBT, and the central processing unit is connected with the IGBT driving module; the synchronous sampling circuit is electrically connected with the LC resonance circuit; and the sampling circuit is connected with the central processing unit and provides current and voltage signals. The control circuit also comprises a resonance frequency sampling circuit which is used for sampling a resonance frequency generated when the cookers of different materials work. The sampling point of the resonance frequency sampling circuit is arranged at the output end of the synchronous sampling circuit, and the output end of the resonance frequency sampling circuit is connected with the central processing unit. The output power and a power preset value are compared and the collected resonance frequency and a resonance frequency preset value are compared to judge whether the resonance frequency is beyond the resonance frequency range of safe working of an induction cooker or not. The output power of an electromagnetic coil is adjusted through the IGBT, so that a main loop working current works in a rated range, and therefore the safe working of the induction cooker is protected.

The invention discloses a convection heating control method of an electromagnetic oven, which is realized on the basis of a heating control device. The heating control device comprises a temperature detecting member, a heating member and a control member, wherein the heating member comprises at least two independent control electromagnetic coils, and the control member comprises a main controller, a timer and a presetting memory. The convection heating control method includes a heating-up stage A and a convection heating stage B. In addition, the invention aims to provide the heating control device for realizing the convection heating control method of the electromagnetic oven. Compared with the prior art, the invention controls the heating power proportioning of electromagnetic trays to drive a plurality of electromagnetic coils to alternatively and circularly heat a pot through distinguishing the volumes of heated foods and controls the heating coils in different positions to alternatively heat to enable the heated points of the pot to be changed along with the heating coils so that liquid in the pot is promoted to boil and convect, the foods are heated without blind angles and are uniformly heated, the nutriments of the foods can also be fully mixed, and the foods can be fully seasoned.

The invention discloses a synchronization control method for an electromagnetic oven and a circuit thereof. The circuit includes a rectification filter circuit, a resonance circuit, a switch device, a drive circuit, a synchronizing signal circuit and a MCU control unit. The synchronization control method is: a synchronizing signal circuit detects the resonance voltage of a resonance circuit; when the resonance voltage decreases to a set value, the synchronizing signal circuit generates a synchronizing interrupt pulse signal; the MCU control unit detects the synchronizing interrupt pulse signal and outputs a high level continuity signal with specific width to a drive circuit, which controls the conduction of the switch device; after the high level continuity signal finishes, the switch device intercepts and the resonance circuit generates a resonance; and repeats the process. The invention adopts the MCU control unit to output the high level continuity signal to the drive circuit, in order to directly control the conduction and interception of the switch device, exerts the advantage of MCU stable working frequency and improves the synchronization course precision, with the advantages of simple circuit, convenient debugging and low cost.

Provided are a converter circuit which can be made compact and lightweight while reducing switching loss, and a motor drive controller equipped with the converter circuit, an air conditioner, a refrigerator, and an induction cooking heater. The converter circuit comprises a rectifier (2), a step-up converter (3a) having a step-up reactor (4a), a switching element (5a) and a reverse current prevention element (6a), a step-up converter (3b) having a step-up reactor (4b), a switching element (5b) and a reverse current prevention element (6b) and being connected in parallel with the step-up converter (3a), a switching control means (7) for controlling the switching elements (5a, 5b), and a smoothing capacitor (8) provided at the output of the step-up converters (3a, 3b), wherein the switching control means (7) switches the current mode of a current flowing through the step-up reactors (4a, 4b) to any one of a continuous mode, a critical mode or a discontinuous mode based on predetermined conditions.

A ceramic pot for electromagnetic over is composed of pot body and pot bottom, and features that on the lower surface of said pot bottom there is a film layer of 0.3-0.9 mm in thickness, which contains Ag, Cr and Fe. Its advantages are high thermal efficiency and high insulating performance.

The invention discloses a method for thermal spraying of a composite bottom layer of an aluminum pan of an electromagnetic oven, which is used in the manufacturing industry of food cookers and is as shown by a drawing appended to the abstract. A magnetic composite layer with a certain thickness is formed by using an automatic spraying method, designing the joint of a coating and the pan bottom into a concave mosaic structure and spraying a magnetic material (pure iron, iron alloy or 430 stainless steel) to the bottom of the aluminum pan so as to meet the operating requirements of the electromagnetic oven. According to the requirements of a product, one or more material (copper, stainless steel, aluminum, nickel, chromium or ceramic) coatings with different thicknesses or functions can be sprayed to realize aesthetic property, practicability and functionality of the electromagnetic oven pan to ensure that the pans for the electromagnetic oven become various middle-grade and high-grade series products.

To reduce the air exhausted to outside a main body after cooling a heat generating component from being taken in again from an intake port. The flow of cooling wind cooled the heat generating component is discharged from an exhaust port 21 at other than a first peripheral wall 19 with the flow bent inside the main body. When rectified inside the main body and discharged from the exhaust port 21, the cooling wind grows to a flow speed of a certain extent to become an exhaust air that a flowing direction is clearly defined, so that it is less likely to be taken in again from the intake port 20, it is less likely to be subjected to the influence of obstacles of the exhaust port, use can be made in a kitchen cabinet of the intake and exhaust air at the back side, and it is satisfactory and is less likely to be damaged without involving sense of unpleasantness by the exhaust air to the user.

The invention discloses an induction cooker control method, device and system, and belongs to the field of intelligent home. The induction cooker control method comprises the following steps that wireless connection with a mobile terminal is built; control instructions sent by the terminal are received according to wireless connection, and the control instructions comprise at least one of a power supply control instruction, a mode selection instruction, a temperature regulating instruction and a duration setting instruction; the corresponding operation is executed according to the control instructions. The control instructions sent by the mobile terminal is received, and the corresponding operation is executed according to the control instructions; the induction cooker can be controlled by the mobile terminal, the corresponding operation is executed according to various control instructions issued by the mobile terminal, and a user does not need to operate the induction cooker, so the problem that in the relevant technology, the control efficiency of the user on the induction cooker is lower is solved; the effect capable of improving the control efficiency on the induction cooker is achieved.