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公开(公告)号：US20230023104A1
公开(公告)日：2023-01-26
申请号：US17845268
申请日：2022-06-21
Applicant: RINNAI CORPORATION , BEST CORPORATION
Inventor： Masaru Takeuchi , Hiroyuki Okamoto , Yusuke Nakagawa
Abstract: A totally aerated combustion burner has a combustion plate part through which an air-fuel mixture is ejected. The combustion plate part includes: an air-fuel mixture permeable body made from metallic fibers to allow the air-fuel mixture to pass therethrough; and a distribution plate having formed therein a multiplicity of distribution holes and being stacked on a back surface of the air-fuel mixture permeable body. An air-fuel mixture permeable body is constructed by laminating a plurality of metallic-fiber woven bodies which are woven by metallic-fiber threads obtained by bundling a plurality of metallic fibers relatively large in diameter. These metallic-fiber woven bodies are laminated such that a part of meshes in one metallic-fiber woven body overlaps a portion other than meshes in another metallic-fiber woven body, said one metallic-fiber woven body and said another metallic-fiber woven body that lies adjacent to each other in the laminating direction.
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公开(公告)号：US10718513B2
公开(公告)日：2020-07-21
申请号：US16038760
申请日：2018-07-18
Applicant: RINNAI CORPORATION
Inventor： Masaru Takeuchi , Takashi Ojiro
Abstract: A burner has: a combustion plate part for ejecting air-fuel mixture; and a flame rod which lies opposite to a portion of the combustion plate part which has a picture-frame-like burner frame; a metal-fiber knit which covers an opening enclosed by the burner frame; and a distribution plate which has formed therein distribution holes and which sandwiches the metal-fiber knit between the burner frame and the distribution plate through the distribution holes and the metal-fiber knit. The flame rod has: a rod base part which lies opposite to a portion of opening peripheral part of the burner frame which is positioned on the same surface level as the opening; and a rod main body part which lies opposite to a portion of the metal-fiber knit. The distance between the rod base part and the opening peripheral part is made smaller than the distance between the rod main body part and the metal-fiber knit.
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公开(公告)号：USD702494S1
公开(公告)日：2014-04-15
申请号：US29451216
申请日：2013-03-28
Applicant: Rinnai Corporation
Designer： Kazuyuki Akagi , Masaru Takeuchi
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公开(公告)号：US20220074591A1
公开(公告)日：2022-03-10
申请号：US17396099
申请日：2021-08-06
Applicant: RINNAI CORPORATION
Inventor： Masaru Takeuchi
Abstract: A controller memorizes an accumulated combustion time by accumulating combustion time of a burner, and is set in a first lower-limit and a second lower-limit higher than the first lower-limit as a lower-limit lower than an initial value of an excess air ratio when reducing an excess air limit of a mixture gas of combustion air and a fuel gas, and the former is the lower-limit in case the accumulated combustion time is under a predetermined set time and the latter is the one in case the accumulated combustion time is the predetermined set time and over.
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公开(公告)号：US20210041100A1
公开(公告)日：2021-02-11
申请号：US16890323
申请日：2020-06-02
Applicant: RINNAI CORPORATION
Inventor： Katsuya Noritake , Masaru Takeuchi , Kimihiro Yoshimura
Abstract: A premixing apparatus for mixing air with a fuel gas in order to supply a burner with an air-fuel mixture through a fan, wherein a downstream end of a gas supply passage is connected to a gas suction part disposed in a portion, on an upstream side of the fan, of an air supply passage. The gas supply passage has interposed therein a zero governor for adjusting a secondary gas pressure to an atmospheric pressure. Even if the calorific value of the fuel gas may fluctuate, excess air ratio of the air-fuel mixture is arranged to be maintained at a constant value. The premixing apparatus is provided with: an excess air ratio detection device for detecting an excess air ratio of the air-fuel mixture; and a flow control valve interposed in a portion, on a downstream side of the zero governor, of the gas supply passage. The flow control valve is controlled such that the excess air ratio of the air-fuel mixture detected by the excess air ratio detection device becomes constant.
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Patent Agency Ranking
公开(公告)号：US10767862B2
公开(公告)日：2020-09-08
申请号：US16030920
申请日：2018-07-10
Applicant: Rinnai Corporation
Inventor： Takashi Ojiro , Kazuyuki Akagi , Masaru Takeuchi , Yoshinari Iwata , Yoshiaki Miyajima
IPC: F23N5/12
Abstract: A flame rod (1) including: a rod portion (11) made of a metal material containing aluminum; and a protective cover layer (21) containing a cover material having high conductivity and high heat resistance, wherein the protective cover layer (21) covers a surface of an insertion portion (11A) of the flame rod (11), and the protective cover layer (11) has a thickness of 0.002 mm or more and less than 0.1 mm.
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公开(公告)号：US20180363897A1
公开(公告)日：2018-12-20
申请号：US16063350
申请日：2016-10-03
Applicant: RINNAI CORPORATION
Inventor： Takahiro Ono , Takashi Ojiro , Masaru Takeuchi
Abstract: A fixing plate for the thermal insulation material is attached to the combustion plate flange part. Provided that a direction leaving away from the air-fuel mixture ejection part of the combustion plate is defined as an outward side direction, there are disposed: on the side edge in the outward side direction of the fixing plate, bent edge parts, which come into contact with the side edge in the outward side direction of the thermal insulation materials; and a plurality of tongue-shaped pressing claws which are elongated from the bent edge part so as to press and prevent the thermal insulation materials from getting released away from the fixing plate.
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公开(公告)号：US20180216515A1
公开(公告)日：2018-08-02
申请号：US15866894
申请日：2018-01-10
Applicant: RINNAI CORPORATION
Inventor： Masaru Takeuchi
IPC: F01N13/10
CPC classification number: F01N13/10 , F01N2340/00 , F01N2340/04 , F01N2470/10 , F23D11/00 , F24H9/0026
Abstract: An exhaust duct has a riser duct section which is connected to an exhaust port having such an inlet port at a lower portion of the riser duct section as is connected to an exhaust port for the combustion gas, the exhaust port being opened at a lower portion of the combustion box. The riser duct section extends upward along an external surface of the combustion box. Suppose that a direction normal to the external surface of the combustion box is defined as a front-to-back direction, and a horizontal direction perpendicular to the front-to-back direction is defined as a lateral direction, then the riser duct section is formed into a flat shape having a smaller dimension in the front-to-back direction than the dimension in the lateral direction. Fluctuations in width between front-side and back-side plate parts of the riser duct section are devised to be restrained, and increase in size can be avoided. The riser duct section has a rail inside the riser duct section, the rail being elongated in the vertical direction and connecting together the front-side and the back-side plate parts.
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公开(公告)号：US09841187B2
公开(公告)日：2017-12-12
申请号：US14918779
申请日：2015-10-21
Applicant: Rinnai Corporation
Inventor： Masaru Takeuchi
CPC classification number: F23D14/14 , F23D14/02 , F23D14/74 , F23D14/82 , F23D2203/005 , F23D2203/1023 , F23D2212/10 , F23D2900/00003
Abstract: A combustion plate is for use in a totally aerated combustion burner in which a plate main body made of ceramic has formed therein a multiplicity of flame holes for ejecting a premixed gas. The plate main body is provided, in a lattice shape, with non-flame-hole sections free of flame holes. Each of those sections of the plate main body which are enclosed by the non-flame-hole sections constitutes a collective flame-hole section having formed therein in a crowded manner a plurality of flame holes. Flame holes formed in those peripheral portions of the collective flame-hole sections which are adjacent to the non-flame-hole sections are smaller in diameter than the diameter of the flame holes formed in those portions of the collective flame-hole sections which are inner than the peripheral portions.
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公开(公告)号：US09777921B2
公开(公告)日：2017-10-03
申请号：US14561382
申请日：2014-12-05
Applicant: RINNAI CORPORATION
Inventor： Masaru Takeuchi
CPC classification number: F23D14/14 , F23D14/02 , F23D14/56 , F23D14/58 , F23D2212/10 , F23D2900/00012 , F23D2900/11402
Abstract: A plate body 11 of a combustion plate 10 is provided with no-burner port portion 13 where no burner ports 12 exist, and a burner port group 14 made up of a plurality of burner ports 12 is arranged in each region 15 of the plate body 11 surrounded by the no-burner port portion 13. A port diameter D of the burner ports 12 differs between the burner port groups 14, but the respective burner port groups 14 are made up of the burner ports 12 of the same port diameter D, and are arranged so that the greater the port diameter D of the burner ports 12 making up each burner port group 14, the greater the interval T between the burner ports 12 in the burner port group 14 becomes.
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