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公开(公告)号：EP4355030A2
公开(公告)日：2024-04-17
申请号：EP24161042.7
申请日：2020-02-03
发明人： OOMORI, Yoshiharu , HOSOKAWA, Daisuke , OGASAWARA, Fumitaka , FUKUI, Mikio , YOSHINO, Koji , UNO, Takashi
IPC分类号： H05B6/68
CPC分类号： H05B6/705
摘要： A microwave treatment device comprises a heating chamber for accommodating a heating target, a microwave generator, a feeder, a detector, and a controller. The microwave generator generates a microwave having a frequency in a specified frequency band. The feeder radiates the microwave inside the heating chamber. The detector detects a reflected microwave power reflected from the heating chamber. The controller causes the microwave generator to execute a frequency sweeping in the specified frequency band. The controller also controls the microwave generator according to a temporal change in a frequency characteristic of the reflected microwave power. The temporal change in the frequency characteristic of the reflected microwave power is based on the frequency of the microwave, a level of the reflected microwave power, and a time passed from a start of heating. In this aspect, it is possible to accurately recognizes the progress of cooking while heating the object. Accordingly, cooking can be finished appropriately.
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公开(公告)号：EP3784002A1
公开(公告)日：2021-02-24
申请号：EP19788468.7
申请日：2019-04-15
摘要： A microwave heating device according to the present disclosure includes: a heating chamber to accommodate a heating target object, a microwave generating unit to generate a microwave, a waveguide, a standing-wave stabilizing part, and a reflected-wave detection unit. The waveguide transmits, to the heating chamber, the microwave generated by the microwave generating unit. The standing-wave stabilizing part stabilizes the position of an in-tube standing wave that occurs in the inside of the waveguide. The reflected-wave detection unit is disposed closer to the heating chamber than the standing-wave stabilizing part, and detects a part of a reflected wave which is a microwave that returns from the heating chamber to the microwave generating unit.
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公开(公告)号：EP3435738B1
公开(公告)日：2020-02-12
申请号：EP17770007.7
申请日：2017-03-13
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公开(公告)号：EP3358909A1
公开(公告)日：2018-08-08
申请号：EP16850543.6
申请日：2016-07-27
CPC分类号： H05B6/707 , H01J37/32302 , H01Q13/08 , H02P27/085 , H05B6/681 , H05B6/686 , H05B6/708 , H05B2206/044
摘要： High frequency heating device (100) is provided with heater (110) disposed adjacent to mount base (101) on which object to be heated (102) is mounted and having a plurality of surface wave transmission lines (111a, 111b) electrically isolated from each other, and first and second high frequency power generators (120a, 120b), each of which generates high frequency power having different frequency. Surface wave transmission lines (111a, 111b) receive at least one of the high frequency power generated by first high frequency power generator (120a) and the high frequency power generated by second high frequency power generator (120b). According to this aspect, interference between the high frequency powers is not occurred and electromagnetic field coupling is not occurred. As a result, in the high frequency heating device provided with the surface wave transmission line using a periodic structure, uneven baking caused by the electromagnetic field coupling can be suppressed, and a heating state of an object to be heated can be easily controlled.
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公开(公告)号：EP2852251A1
公开(公告)日：2015-03-25
申请号：EP13791362.0
申请日：2013-04-26
摘要： In order to radiate microwaves from a waveguide tube to a whole area from end to end of a radiation area within a heating chamber, and to heat uniformly an object to be heated without using a driving mechanism, a microwave heating device of the present invention includes openings 105, 106 for radiating the microwave from the waveguide tube 104 to the inside of the heating chamber 102. The heating chamber 102 includes a radiation area which has a length of approximate twice an in-tube wavelength in a propagation direction of the waveguide tube 104. Also, the openings 105, 106 are arranged to have an interval of approximate the in-tube wavelength in the propagation direction of the waveguide tube 104, and are symmetrically arranged to a center line which intersects perpendicularly to the propagation direction in the radiation area.
摘要翻译： 本发明的微波加热装置为了从加热室内的照射区域的一端到另一端从波导管向整个区域照射微波，不使用驱动机构而均匀地加热被加热物， 用于将微波从波导管104辐射到加热室102的内部的开口105,106。加热室102包括辐射区域，该辐射区域在波导管的传播方向上具有接近管内波长的两倍的长度 另外，开口部105,106被配置为在波导管104的传播方向上具有与管内波长近似的间隔，并且对于与辐射中的传播方向正交的中心线对称地配置 区。
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公开(公告)号：EP3435736A1
公开(公告)日：2019-01-30
申请号：EP17770331.1
申请日：2017-03-23
摘要： The present invention includes directional coupler (30) that detects at least part of a reflected wave inside waveguide (4). When object (21) to be heated is absent, a reflected wave is strong, because there is nothing to absorb a microwave. When object (21) is present, the reflected wave is weak, because the microwave is absorbed by object (21). As a quantity of object (21) becomes greater, a larger amount of microwave is absorbed by object (21), and thus the reflected wave is weakened. It is thus possible to determine the quantity of object (21) from a reflected wave detection amount detected by directional coupler (30) without using a detector that detects a load.
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公开(公告)号：EP3240366A1
公开(公告)日：2017-11-01
申请号：EP15872165.4
申请日：2015-12-04
摘要： Waveguide structure antenna (5) has ceiling surface (9) and side wall surfaces (10a, 10b, 10c) defining waveguide structure section (8), as well as has front opening (13) to emit microwaves from front opening (13) toward a heating-target object. Waveguide structure section (8) includes coupling part (7) joined to ceiling surface (9) to couple microwaves into an internal space of waveguide structure section (8). Waveguide structure section (8) emits circularly polarized waves from at least one microwave extraction opening (14) formed on ceiling surface (9) into a heating chamber. At least one microwave extraction opening (14) includes at least a pair of microwave extraction openings (14) that is symmetrical with respect to pipe axis (V) of waveguide structure section (8). Waveguide structure section (8) has a flat area between the pair of microwave extraction openings (14). According to this aspect, the heating-target object loaded in the heating chamber can uniformly and locally be heated.
摘要翻译： 波导结构天线（5）具有限定波导结构部分（8）的顶面（9）和侧壁面（10a，10b，10c），并且具有前开口（13）以从前开口（13） 被加热物体。 波导结构部分8包括连接到天花板表面9以将微波耦合到波导结构部分8的内部空间中的耦合部分7。 波导结构部分（8）从形成在天花板表面（9）上的至少一个微波提取开口（14）发射圆极化波进入加热室。 至少一个微波提取开口（14）包括至少一对关于波导结构部分（8）的管轴线（V）对称的微波提取开口（14）。 波导结构部分（8）在一对微波提取开口（14）之间具有平坦区域。 根据这个方面，装载在加热室中的加热对象物可以均匀且局部地被加热。
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公开(公告)号：EP4355030A3
公开(公告)日：2024-07-24
申请号：EP24161042.7
申请日：2020-02-03
发明人： OOMORI, Yoshiharu , HOSOKAWA, Daisuke , OGASAWARA, Fumitaka , FUKUI, Mikio , YOSHINO, Koji , UNO, Takashi
IPC分类号： H05B6/70
CPC分类号： H05B6/705
摘要： A microwave treatment device comprises a heating chamber for accommodating a heating target, a microwave generator, a feeder, a detector, and a controller. The microwave generator generates a microwave having a frequency in a specified frequency band. The feeder radiates the microwave inside the heating chamber. The detector detects a reflected microwave power reflected from the heating chamber. The controller causes the microwave generator to execute a frequency sweeping in the specified frequency band. The controller also controls the microwave generator according to a temporal change in a frequency characteristic of the reflected microwave power. The temporal change in the frequency characteristic of the reflected microwave power is based on the frequency of the microwave, a level of the reflected microwave power, and a time passed from a start of heating. In this aspect, it is possible to accurately recognizes the progress of cooking while heating the object. Accordingly, cooking can be finished appropriately.
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公开(公告)号：EP3661326A1
公开(公告)日：2020-06-03
申请号：EP20152193.7
申请日：2017-06-20
摘要： High-frequency heating device (100) includes first surface wave excitation body (103a), second surface wave excitation body (103b), first high-frequency power supply unit (110a), second high-frequency power supply unit (110b), and high-frequency power generation unit (120). First and second surface wave excitation bodies (103a) and (103b) are disposed at locations opposite to each other such that heating-target object (102) is put between the surface wave excitation bodies. This configuration provides high-frequency heating device (100) capable of heating and browning two faces of heating-target object (102) without using a heater or other heating sources.
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公开(公告)号：EP2953204B1
公开(公告)日：2020-03-25
申请号：EP14745823.6
申请日：2014-01-31
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