With Leakage Detector Patents (Class 219/737)
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Patent number: 10743378Abstract: A split-type microwave oven comprises a first housing assembly, a second housing assembly, a microwave source module, a microwave shielding and choking member, and a detection device that is used for detecting whether a wave leakage occurs in a microwave heating resonant cavity. The second housing assembly is detachably disposed on the first housing assembly. The first housing assembly is provided with a first microwave shielding member, the second housing assembly is provided with a second microwave shielding member, and the first microwave shielding member is suitable for defining, together with the second microwave shielding member, the microwave heating resonant cavity. The microwave source module is installed on one of the first housing assembly and the second housing assembly. The microwave shielding and choking member is located outside the microwave heating resonant cavity. The split-type microwave oven occupies a small space and is convenient to use.Type: GrantFiled: September 25, 2017Date of Patent: August 11, 2020Assignees: GUANGDONG MIDEA KITCHEN APPLIANCES MANUFACTURING CO., LTD., MIDEA GROUP CO., LTD.Inventors: Xiangwei Tang, Chun Luan, Shengbin Fu, Xiantao Du, Feina Zhang, Minyong Liu
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Patent number: 10187933Abstract: A system and method for safe operation of a microwave oven is disclosed. The heating function of the microwave oven may be automatically disabled upon detection, by the microwave oven, of a metal object entering a heating compartment of the microwave. The detection may be based on magnetic induction. Further, the heating function of the microwave may be automatically enabled and recovered upon detection, by the microwave oven, of a metal object being removed from the heating compartment of the microwave.Type: GrantFiled: August 18, 2016Date of Patent: January 22, 2019Assignee: Xiaomi Inc.Inventors: Dongxu Liu, Yi Wu, Nuo Yang
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Patent number: 8975562Abstract: Apparatus and methods are disclosed for a safety door of an oven having glass therein with a plastic laminate. The safety door retains glass within the door in order to prevent glass from falling or being forced outside of the oven, which may cause injury.Type: GrantFiled: May 3, 2011Date of Patent: March 10, 2015Assignee: General Electric CompanyInventors: Patrick D. Galbreath, Brian Henninger
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Patent number: 8698056Abstract: A battery-free electromagnetic leakage detector includes a substrate, an antenna, a filter circuit electrically connected with the antenna, a clamp circuit electrically connected with the filter circuit, and an indicating member electrically connected with the clamp circuit. Accordingly, the battery-free electromagnetic leakage detector is structurally simple and compact and can detect electromagnetic waves and display the detection without connection with any external power source.Type: GrantFiled: December 7, 2010Date of Patent: April 15, 2014Assignee: National Chung Cheng UniversityInventors: Sheng-Fuh Chang, Chia-Chan Chang, Po-Yu Tsai
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Patent number: 8455803Abstract: The present invention relates to a wave choke device for an oven door of a microwave oven. The wave choke device includes a front shielding comprising at least one conductive material and a wave trap forming a channel with one at least partially open side, which wave trap is arranged on at least one outer portion of the front shielding and comprises at least one conductive material. The wave choke device includes further a plurality of lamellae arranged uniformly in the at least partially open side of the wave trap, which lamellae comprises at least one conductive material. The wave choke device comprises one single piece made of a perforated material, wherein said one single piece includes at least the front shielding and the wave trap. The present invention relates further to a corresponding oven door and a corresponding microwave oven.Type: GrantFiled: July 30, 2008Date of Patent: June 4, 2013Assignee: Electrolux Home Products CorporationInventors: Norbert Danzer, Martin Gasch, Abdel-Ilah Zbat, Arnd Hofmann
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Patent number: 7511251Abstract: A magnetron is provided including a yoke having an internal space, a first magnet provided at one end of the internal space, a second magnet provided at a second end of the internal space, the second magnet being axially spaced from the first magnet. Further, an anode cylinder that generates radio frequency energy may be provided axially between the first and second magnets, a first pole piece and a second pole piece may be provided proximate first and second openings of the anode cylinder, respectively. Additionally, the magnetron may also include a seal that intercepts external leakage, the seal may have an inward protrusion extending axially towards the anode cylinder; and a choke filter that intercepts external leakage provided proximate the seal.Type: GrantFiled: December 20, 2006Date of Patent: March 31, 2009Assignee: LG Electronics Inc.Inventors: Seung-Won Baek, Jong-Soo Lee
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Patent number: 7145118Abstract: A microwave oven protective circuit arrangement is disclosed to include a cutoff switch electrically connected between a power supply unit and a microwave oven for controlling the supply of electricity from the power supply unit to the microwave oven, and a detector provided outside the microwave oven to detect leakage of the microwave produced by the microwave oven and to output a cutoff signal to the cutoff switch to cut off electricity from the microwave oven when detected a leakage of the microwave.Type: GrantFiled: August 22, 2005Date of Patent: December 5, 2006Inventor: Ming-Jing Wu
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Patent number: 7096599Abstract: A household appliance (1) e.g a washer-dryer, comprises an enclosure (2) into which objects to be heated are placed, a magnetron (4) for generating microwaves, a waveguide (3) for feeding the generated microwave into the enclosure, an arc detector (5) coupled to the waveguide (3) for detecting the arcing within the enclosure (2) and a control unit (6).Type: GrantFiled: December 6, 2001Date of Patent: August 29, 2006Inventors: Cem Kural, Serdal Elmas