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公开(公告)号：US12117852B2
公开(公告)日：2024-10-15
申请号：US18351799
申请日：2023-07-13
申请人： RINNAI CORPORATION
发明人： Kazuyuki Shichi , Kunio Kataoka
IPC分类号： G05D16/16
CPC分类号： G05D16/163
摘要： In a gas governor, an auxiliary chamber divided by a separating wall from a main chamber that is a portion of the secondary pressure chamber is provided in the secondary pressure chamber, the auxiliary chamber communicates with the main chamber through a communicating passage, the separating wall is positioned at a portion away in a circumferential direction from an outflow-port opened portion that is a peripheral wall portion of the secondary pressure chamber, in which the outflow port is opened, and the separating wall is provided so that a distance from a valve hole and a curvature in the circumferential direction of at least an end portion of the separating wall, which is close to the valve seat, are equal to those of an end portion of the outflow-port opened portion, which is close to the valve seat.
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公开(公告)号：US11826714B2
公开(公告)日：2023-11-28
申请号：US17805238
申请日：2022-06-03
申请人： RINNAI CORPORATION
发明人： Tomoyuki Shimazu
IPC分类号： B01F23/23 , B01F23/231 , B01F25/312 , B01F23/232
CPC分类号： B01F23/23113 , B01F23/23231 , B01F25/312512
摘要： A fine bubble generator may include an inlet into which gas-dissolved water in which gas is dissolved flows, an outlet out of which the gas-dissolved water flows; and a fine bubble generation portion disposed between the inlet and the outlet. The fine bubble generation portion may include a venturi portion including a diameter-reducing flow path and a diameter-increasing flow path, wherein a flow path diameter of the diameter-reducing flow path reduces from upstream to downstream, and the flow path diameter of the diameter-increasing flow path increases from upstream to downstream, a discharging flow path configured to discharge the gas-dissolved water, which flowed out of the venturi portion, out of the fine bubble generation portion; and a recirculation flow path connecting a midstream of the outflow path and the venturi portion.
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公开(公告)号：US20230184426A1
公开(公告)日：2023-06-15
申请号：US18056921
申请日：2022-11-18
申请人： RINNAI CORPORATION
发明人： Katsuya Noritake
摘要： In a premixing apparatus that mixes a fuel gas with air, supplies an air-fuel mixture to a burner through a fan, and carries out a control that regulates an opening degree of a variable throttle valve, which is interposed in a gas supply passage, so that an excess air ratio of an air-fuel mixture becomes an appropriate value, in a case where a detected excess air ratio deviates to one side, e.g., a large side, from an acceptable range, a motor is repeatedly caused to rotate by a unit-angle in an opening-degree increasing direction until the detected excess air ratio becomes an appropriate value. In a case where the detected air ratio deviates to the other side, e.g., a small side, from the acceptable range, the motor is caused to rotate, at a high speed in an opening-degree decreasing direction, till a first position that is anticipated that the excess air ratio will become a value that deviates by a fixed quantity from the acceptable range to a large side, thereafter, the motor is caused to rotate, at the high speed in an opening-degree increasing direction, till a second position that is a short of a target position, and subsequently, the motor is caused to rotate by the unit-angle in the opening-increasing direction.
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公开(公告)号：US20230175691A1
公开(公告)日：2023-06-08
申请号：US18054696
申请日：2022-11-11
申请人： RINNAI CORPORATION
发明人： Toshimitsu Nagasaka
IPC分类号： F23M5/04
CPC分类号： F23M5/04 , F24H1/0027
摘要： In a combustion apparatus that includes a heat exchanger which is disposed in a combustion box, on a premise that a direction from a burner to the heat exchanger is defined as a Z-axis plus direction, a direction opposite to the Z-axis plus direction is defined as a Z-axis minus direction, and an orthogonal direction to a Z-axis direction, which is along fins of the heat exchanger is defined as a X-axis direction, a thermal insulation material is arranged on an inner surface of a swelling part that is formed at a side plate part of a combustion box and outwardly swells in the X-axis direction so as to be sandwiched from both sides in the Z-axis direction by a step that is outwardly bent in the X-axis direction, which is positioned an end, in the Z-axis plus direction, of the swelling part and a structural member of a burner, which inwardly protrudes in the X-axis direction from an end, in the Z-axis minus direction, of the side plate part. A vicinity portion of an end, in the Z-axis plus direction, of the thermal insulation material is held from an inside in the X-axis direction by a side edge portion, on each side in the X-axis direction, of the fins.
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公开(公告)号：US20230139779A1
公开(公告)日：2023-05-04
申请号：US18051672
申请日：2022-11-01
申请人： Rinnai Corporation
发明人： Ryosuke YUGE
IPC分类号： F24D19/08
摘要： A combustion device may include a casing including a bottom plate, a combustion unit housed in the casing, and a fan housed in the casing and configured to take in air inside the casing and supply the air to the combustion unit. The bottom plate may be provided with a flat portion and a recess recessed downward from the flat portion. The recess may be provided with a drainage hole and an eave arranged above the drainage hole. The drainage hole may be located below an upper surface of the flat portion. The eave may be at least partially located below the upper surface of the flat portion.
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公开(公告)号：US20230112151A1
公开(公告)日：2023-04-13
申请号：US17940608
申请日：2022-09-08
申请人： RINNAI CORPORATION
发明人： Katsuya Noritake
摘要： A premixing apparatus that mixes a fuel gas with air and supplies an air-fuel mixture in a burner through a fan includes a control device that is configured to carry out a third control that: calculates and memorizes a lower limit of a rotational speed of a fan, at which an increase of an opening degree of a variable throttle valve becomes necessary, as a first threshold; and when the rotational speed of the fan increases to the first threshold or faster next time, immediately changes the opening degree of the variable throttle valve to an increased opening degree, which is larger than a predetermined standard opening degree and is obtained by multiplying a deviation of the rotational speed of the fan from the first threshold by a predetermined coefficient.
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公开(公告)号：US20220387945A1
公开(公告)日：2022-12-08
申请号：US17805514
申请日：2022-06-06
申请人： RINNAI CORPORATION
发明人： Tomoyuki SHIMAZU , Kunio KATAOKA
IPC分类号： B01F23/232 , B01F25/433 , B01F25/432 , B01F25/10 , B01F23/2373
摘要： A fine bubble generator may include an inlet; an outlet; a first fine bubble generation portion; and a second fine bubble generation portion. The first fine bubble generation portion includes: a diameter-reducing flow path and a diameter-increasing flow path. The second fine bubble generation portion includes: a first swirling flow generation portion; and a second swirling flow generation portion. The first swirling flow generation portion includes: a first outer peripheral portion; and a plurality of first vanes disposed configured to generate a first swirling flow flowing in a first swirling direction with respect to a center axis of the second fine bubble generation portion. The second swirling flow generation portion includes: a second outer peripheral portion; and a plurality of second vanes configured to generate a second swirling flow flowing in a second swirling direction opposite to the first swirling direction with respect to the center axis.
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公开(公告)号：US20220333773A1
公开(公告)日：2022-10-20
申请号：US17703707
申请日：2022-03-24
申请人： RINNAI CORPORATION
发明人： Chihiro Nagahama
摘要： A combustion chamber inside a combustion box has disposed therein a burner positioning frame having: a rear frame part positioned on a rear side of a burner-disposed portion; and a burner positioning frame having side frame part positioned on each laterally outside of the burner-disposed portion. The rear frame part has formed therein a laterally elongated drawn part which is dented rearward. The secondary air flowing from the distribution holes positioned in such a portion of the partition plate as is closer to the rear end of the partition plate is restrained by the drawn part from flowing upward from between the partition plate and a lower edge of the rear frame part through a clearance between the rear frame part and a rear plate part of the combustion box.
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公开(公告)号：US11041657B2
公开(公告)日：2021-06-22
申请号：US16055422
申请日：2018-08-06
申请人： RINNAI CORPORATION
发明人： Kentaro Mori , Hideyuki Jinno
摘要： A hot-water supply apparatus capable of restraining the occurrence of noises from a building wall surface side includes a hot-water supply apparatus main body having a burner and a heat exchanger that generates hot water by combustion exhaust of the burner, and a rectangular parallelepiped main body case that houses the hot-water supply apparatus main body. A back plate (5c), which closes the back side of the main body case, is installed to a building wall surface (W) such that the back plate (5c) opposes the building wall surface (W) with a predetermined void space (S) provided therebetween. A soundproof member (18), which closes at least a part of an open end of the void space (S), is provided on the main body case (5).
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公开(公告)号：US10969178B2
公开(公告)日：2021-04-06
申请号：US16390182
申请日：2019-04-22
申请人： RINNAI CORPORATION
发明人： Takashi Ojiro
摘要： A heat exchanger includes a plurality of heat exchange units. Each of the plurality of heat exchange units includes: an internal space in which a fluid to be heated flows, a plurality of gas vents penetrating the internal space in a non-communicating state and through which combustion exhaust gas flows, at least one inlet port, and at least one outlet port. At least the one inlet port and at least the one outlet port in each of the heat exchange units are disposed at both ends in a longitudinal direction of the heat exchange unit and are shifted (offset) in a lateral direction of the heat exchange unit.
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