公开(公告)号：US12181148B2

公开(公告)日：2024-12-31

申请号：US17845268

申请日：2022-06-21

Applicant: RINNAI CORPORATION ,  BEST CORPORATION

Inventor： Masaru Takeuchi ,  Hiroyuki Okamoto ,  Yusuke Nakagawa

IPC: F23D14/02 ,  F23D14/14

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.

公开(公告)号：US20190032916A1

公开(公告)日：2019-01-31

申请号：US16038760

申请日：2018-07-18

Applicant: RINNAI CORPORATION

Inventor： Masaru Takeuchi ,  Takashi Ojiro

IPC: F23D14/64

CPC classification number: F23D14/64 ,  F23D14/02 ,  F23D14/145 ,  F23D14/583 ,  F23D2203/103 ,  F23D2208/10 ,  F23D2212/201 ,  F23D2900/00019 ,  F23D2900/14001

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.

公开(公告)号：US20190017703A1

公开(公告)日：2019-01-17

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.

公开(公告)号：US20180259181A1

公开(公告)日：2018-09-13

申请号：US15908954

申请日：2018-03-01

Applicant: RINNAI CORPORATION

Inventor： Masaru Takeuchi ,  Takashi Ojiro ,  Takahiro Ono

IPC: F23D14/14 ,  F23D14/74 ,  F23D14/84

CPC classification number: F23D14/145 ,  F23D14/74 ,  F23D14/84

Abstract: A totally primary air combustion type of burner has a combustion plate with a plurality of slit-shaped flame holes for ejecting therethrough air-fuel mixture for combustion. The combustion plate has a plurality of flame-hole rows having flame holes arranged in an X-axis (longitudinal) direction at a predetermined pitch in a Y-axis (lateral or shorter) direction. First flame-hole rows with position of flame holes and second flame-hole rows with position of flame holes with deviation by half a pitch in the Y-axis direction, are alternately arrayed in parallel with one another in the X-axis direction. A plurality of positions in the Y-axis direction of one of the first and the second flame-hole rows are provided with thinned portions (portions where no flame holes are formed) so that the pitch between the flame holes becomes two times the predetermined pitch.

公开(公告)号：US12055291B2

公开(公告)日：2024-08-06

申请号：US17396099

申请日：2021-08-06

Applicant: RINNAI CORPORATION

Inventor： Masaru Takeuchi

IPC: F23N1/02 ,  F23N5/20

CPC classification number: F23N1/022 ,  F23N5/203 ,  F23N2227/02 ,  F23N2231/12

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.

公开(公告)号：US10928063B2

公开(公告)日：2021-02-23

申请号：US16063350

申请日：2016-10-03

Applicant: RINNAI CORPORATION

Inventor： Takahiro Ono ,  Takashi Ojiro ,  Masaru Takeuchi

IPC: F23D14/14 ,  F23D14/02 ,  F23L5/02 ,  F24H1/14

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.

公开(公告)号：US10443480B2

公开(公告)日：2019-10-15

申请号：US15866894

申请日：2018-01-10

Applicant: RINNAI CORPORATION

Inventor： Masaru Takeuchi

IPC: F01N13/10 ,  F23D11/00 ,  F24H9/00

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 riser duct section extends upward along an external surface of the combustion box. 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.

公开(公告)号：US20160116160A1

公开(公告)日：2016-04-28

申请号：US14918779

申请日：2015-10-21

Applicant: Rinnai Corporation

Inventor： Masaru Takeuchi

IPC: F23D14/14 ,  F23D14/02

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.

Abstract translation: 燃烧板用于全燃烧燃烧器，其中在其中形成有用于喷射预混合气体的多个火焰孔的由陶瓷制成的板主体。 板状主体以格子形状设有不具有火焰孔的非火焰孔部分。 由非火焰孔部分包围的板主体的那些部分构成了以拥挤的方式形成有多个火焰孔的集体火焰孔部分。 形成在与非火焰孔部相邻的集合火焰孔部的周边部的火焰孔的直径小于在内侧的集合火焰孔部的那些部分形成的火焰孔的直径 比周边部分。

公开(公告)号：US20240060640A1

公开(公告)日：2024-02-22

申请号：US18340307

申请日：2023-06-23

Applicant: RINNAI CORPORATION

Inventor： Yusuke Shiraha ,  Masaru Takeuchi

IPC: F23D14/70

CPC classification number: F23D14/70

Abstract: In a combustion apparatus that includes a burner constituted by a burner body, an inside of which an air-fuel mixture is supplied to and one surface of which is made into an open surface, and a combustion plate covering the open surface of the burner body, and a combustion box enclosing a combustion space of the air-fuel mixture ejecting from the combustion plate, an offset part that is positioned at a portion which is away from the swelling part in an inflow direction of the air-fuel mixture to the inner chamber and does not oppose to a tip part(s) of the ignition electrode(s) through the combustion plate is provided with the opposite wall of the burner body and the offset part offsets to a combustion-plate side so that a distance between the offset part and the combustion plate becomes shorter than that between the combustion plate and a general part of the opposite wall except the swelling part and the offset part.

公开(公告)号：US20240027063A1

公开(公告)日：2024-01-25

申请号：US18319625

申请日：2023-05-18

Applicant: RINNAI CORPORATION

Inventor： Yusuke Shiraha ,  Masaru Takeuchi

IPC: F23D14/14

CPC classification number: F23D14/145 ,  F23D2900/14001

Abstract: In a combustion apparatus that includes a combustion plate having a burner frame with a shape of a picture frame, which covers an open surface of a burner body, and a frame flange part outwardly extending from a side plate part, which is sandwiched between a body flange part of the burner body and a box flange part of a combustion box, which is fastened to the body flange part, a projecting part(s) positioning the burner frame with respect to the combustion box, which comes into contact with, or comes close to and is disposed opposite to an inner surface of the combustion box is provided with the side plate part of the burner frame. Preferably, the projecting part(s) is provided at a portion away from an end of a side of an opening peripheral edge part of the side plate part to a side of the frame flange part.