94 results about "Convection heater" patented technology

A heating cooker including a cooker body having a cooking chamber and a convection heating unit. The convection heating unit includes a convection heater to generate heat, a convection fan to forcibly move the heat generated from the convection heater into the cooking chamber, a convection motor to drive the convection fan, and a convection housing to receive the convection heater and the convection fan. The convection heater and the convection fan are linearly arranged within the convection housing, to allow air introduced into the convection housing to move from the convection fan to the convection heater. This configuration is effective to restrict the transfer of heat from the convection heater to the convection motor.

A heating device comprises a heater having a first surface and a second surface, with the second surface being generally opposite of the first surface. The heater is configured to receive an electrical current and convert it to heat. The heating device additionally includes at least one heat transfer assembly positioned along the first and/or second surface of the heater. In one embodiment, the heat transfer assembly includes a plurality of fins that generally define a plurality of fin spaces through which fluids may pass. In some arrangements, the heating device comprises an outer housing that at least partially surrounds the heater and one or more of the heat transfer assemblies. Heat generated by the heater is transferred to the fins of the heat transfer assembly. In addition, fluids passing through the fin spaces are selectively heated when electrical current is provided to the heater.

An oven comprises a cooking cavity, a RF generation module, an upper heater module, a lower heater module and a convection heater module. The RF generation module is configured to deliver microwave energy into the cooking cavity. The upper heater module includes at least one of a halogen lamp and a ceramic heater. The lower heater module includes at least one of a halogen lamp and a ceramic heater. The convection heater module includes a sheath heater and a convection fan positioned to direct air over solely the sheath heater into the cooking cavity. The upper heater module and lower heater module are configured to deliver radiant energy into the cooking cavity. The convection heater module is configured to deliver thermal energy into the cooking cavity. A control is operatively connected to the RF generation module, upper heater module, lower heater module and convection heater module for selective control thereof. The control operates the oven in a plurality of modes, including a microwave mode, a convection/bake mode, and a speedcooking mode. In the speedcooking mode, the control is configured to selectively control the energization of the RF generation module, upper heating module and lower heating module concurrently with the selective energization of the convection heater module.

A convective warmer to which blankets of different dimensions may be connected is capable of providing air to the various blankets at flow rates that optimally inflate those blankets to achieve the optimal clinical result for the patients covered by those blankets. The blanket connected to the warmer may range from a full size adult warming blanket to a pediatric or neonate warming blanket. There is provided on each blanket a code, marking or marker, to be read by a sensor(s) provided at the outlet of the warmer, that identifies the type of blanket when the blanket is coupled to the warmer. Consequently, heated air may be automatically output by the warmer to the blanket at the appropriate flow rate of that blanket to optimally inflate the blanket without any need for intervention by a user. In addition to being used to control the flow rate of the heated air, the code from the blanket may also be used to control the temperature of the heated air to be input to the blanket.

A convection heater (23) is disposed along a back surface of a rear face plate (18) which is comprised of a stainless steel plate that forms a heating chamber (14). On a back side of the rear face plate (18), disposed is a circulation fan (22) by which, air in the heating chamber (14) is sucked from air intake use through-holes into the back side, and after it is heated by the convection heater (23), it is returned from air blowing use through-holes to the heating chamber. On a surface of an inner side of the heating chamber (14) of the rear face plate (18), a self-cleaning layer is formed by dissolving a self-cleaning material which oxide-decomposes and removes accreted dirt at high temperature into a porcelain enamel glaze and by applying and bake-sticking.

Disclosed is an appliance for volatilizing active substances in either herbal material or fluid extract for inhalation, including a material vaporization surface with a plurality of convective air flow apertures, a conductive heater and a convective heater.

A tunnel oven for heating transported carbonaceous materials includes an enclosure having a passage and a transport device for moving solid carbonaceous materials through and along a length of the passage. A direct convection heater is operably connected to the enclosure to heat the solid carbonaceous material as the material is moved along the length of the passage. A temperature controller is operably coupled to the heater to provide one or more selected temperatures along the length of the passage. An atmosphere controller controls the heating atmosphere along the length of the passage so that the surface of the solid carbonaceous material is protected against oxidation.

A cooking apparatus to effectively agitate and evenly distribute high-temperature air into a cooking chamber by use of a single driving fan and a plurality of driven fans. The cooking apparatus includes the cooking chamber, the driving fan arranged at a rear wall of the cooking chamber, a convection heater to surround the driving fan, the plurality of driven fans arranged on a circumference of the driving fan, and a fan cover having a plurality of suction holes and discharge holes. The driving fan is connected with a drive motor to rotate in accordance with an operation of the drive motor. The driven fans rotate by use of air streams generated when the driving fan rotates. The high-temperature air is evenly agitated in accordance with the rotation of the driven fans to be distributed into the cooking chamber via the discharge holes in all directions.

It relates to the defreeze chamber at either side of the cold room or the chilling room. There is convection heater and inbuilt hot wire defreezes plate. The detachable defreeze plate is loaded inside the defreeze chamber in multi layers and being able to draw out from the defreeze chamber. It has quick heat transmission for the convenience of users.

An electric heater includes an upper housing, a lower housing, a fan disposed in the upper housing, and a heater disposed in the upper housing. Electrical control components and circuitry are disposed in the lower housing and are connected for energizing the heater and for operating the fan. Mechanical support members are arranged for spacing the upper housing from the lower housing in order to create air discharge flow paths for air flow exiting from the upper housing. The discharged air at an elevated temperature is used to elevate the temperature of objects within a room for exterminating bed bugs.

To reduce the noise level of air convective warmer, the air filter of the warmer is fitted with an air intercept mechanism to disrupt the flow of air that traverses inside the interior cavity of the air filter. By thus disrupting the air flow, the noise that otherwise would have been generated due to a non-interrupted air stream flow is lowered. The air intercept mechanism may be in the form of at least one partition positioned inside the interior cavity of the air filter. Alternatively, double-ended open tubes may be used, so long as the interior cavity of the filter is sealed, with only the tubes providing the passages for air to output from the air filter. Yet a third embodiment of the air reduction filter has an air impermeable material covering at least one portion of the surface area of the filtering material to prevent the inflow air from directly entering into the interior cavity of the air filter through the covered surface area.

The heating temp. control method for microwave oven includes three stages: fan motor driving stage, starting from that internal temp. of heating chamber is reached to set pre-heating temp. driving fan motor in first specific period of time; heater driving stage, after the fan motor driving stage is completed, taking drive stop of fan motor as starting point, simultaneously driving grill heater and convection heater in second specific period of time; and repeated execution stage, according to the cooking time inputted by user repeatedly executing the above-mentioned two stages to heat food uniformly.

A heater is described which operates on the principle of convection air currents within heating fins being established by heating of air adjacent to one or more heating elements and the transfer of heat from the convection currents to the side walls of the heating fins where it may radiate outwardly as well as the direct convection of the heat from the elements in the air which passes out of the apertures at the tops of the fins into the surroundings.

A cooking device comprises: a heating chamber (11) equipped with a placement section (11d), the placement section (11d) being adapted such that a tray (17) is placed thereon, the tray (17) having a placement net (17a) for placing thereon an object to be cooked; a vapor generating device (1) for generating vapor and supplying the vapor between the placement net (17a) and the tray (17); a circulation duct (12) having a circulation fan (16) and circulating gas in the heating chamber (11); a convection heater (15) provided in the circulation duct (12); a gas supply opening (38) provided below the tray (17); a gas discharge opening (41) provided below the tray (17); and a magnetron (33) for supplying a microwave to the heating chamber (11). The cooking device is provided with a range mode for performing cooking by a microwave, a grill mode for performing cooking by superheated vapor by driving the circulation fan (16) and the convection heater (15), and a steaming mode for performing cooking by saturated vapor with the circulation fan (16) and the convection heater (15) stopped.

The present invention generally relates to an insulating heater jacket, and more particularly, to a silicone rubber and a heater controller for an insulating heater jacket. According to the present invention, the use of the silicone rubber molded out of a mixture of polymethyl vinyl silica oxide solutions improves durability. Furthermore, a duplex heating pad is provided using first and second heaters, and a microprocessor and a temperature sensor monitor malfunction of the dual heating wires and perform control in such a manner that upon malfunction of one of the heating wires, the other heating wire can be operated. Therefore, there are advantages in that temperature can be accurately controlled and reliable performance can be always ensured without any malfunction.

The invention relates to a heat insulation control device of microwave oven and its method. It is characterized by that in the microwave oven formed from function key operation portion for controlling function of microwave oven and control portion for controlling whole microwave oven and further controlling cooking process if the user utilizes the function key operation portion of microwave oven to select heat insulation function, the switching-on or switching-off control of its convection heater capable of producing convection function can be used to implement heat insulation function.

The present invention relates to an electric oven capable of reducing contaminants, the electric oven comprising: an oven body having a cavity capable of accommodating food therein; and a convection assembly which is installed to protrude from one surface of the cavity and which can suck and remove contaminants generated when cooking the food and can heat the inside of the cavity. The convection assembly comprises: a cover case, protruding from one surface of the cavity, including a front surface which is spaced apart from the one surface of the cavity and has an inlet port, and a side surface which extends from the front surface to the one surface of the cavity and has an outlet port; a convection fan which is installed inside the cover case and allows air containing the contaminants to be sucked into the cover case through the inlet port and discharged through the outlet port; and a convection heater for heating the air sucked into the cover case by the convection fan to remove the contaminants, wherein the air discharged from the cover case moves in an upward inclined direction with respect to the one surface of the cavity.