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Noritz Corporation patents


Recent patent applications related to Noritz Corporation. Noritz Corporation is listed as an Agent/Assignee. Note: Noritz Corporation may have other listings under different names/spellings. We're not affiliated with Noritz Corporation, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "N" | Noritz Corporation-related inventors


Combustion apparatus and method of manufacturing the same

A housing includes a back plate portion, a pair of side plate portions which extend forward from both side ends of the back plate portion, and a front opening. A chamber is arranged inside the housing and includes a first attachment surface 31ba inclined with respect to the back plate portion in a plan view and an intake port which opens forward in the first attachment surface. ... Noritz Corporation

Reverse combustion type combustion apparatus

A reverse combustion type combustion apparatus (1) includes a combustion section (2) that combusts fuel in a downward direction, heat exchangers (4, 5) disposed under the combustion section (2), and an exhaust box (6) disposed under the heat exchangers (4, 5). The exhaust box (6) is a molded product made from a synthetic resin material; the exhaust box (6) includes an opening portion (30) for introduction of combustion exhaust gases generated by an upper portion, a fixing portion (33) for fixing the heat exchanger (5), and an inclined bottom portion (35) that collects condensed water generated by the heat exchanger (5); and, at the lower end portion of the exhaust box (6), at least three legs (40) are integrally formed and make the exhaust box (6) stand up by itself.. ... Noritz Corporation

Hot water apparatus

A hot water apparatus includes a heat exchanger and a housing. A case has a circumferential wall portion, a lower opening, and a flange portion. ... Noritz Corporation

Heating device with hot water supply function

A heating device with hot water supply function includes: a combustion means; a first heat exchanger; a circulation passage that connects the first heat exchanger and an room heating unit; a circulation pump; a bypass passage that branches off from the circulation passage; a second heat exchanger for hot water supply provided in the bypass passage; a cold water supply passage; a hot water supply passage for supply of hot water from the second heat exchanger; and a distribution means that is provided at a branching section and whose distribution ratio can be adjusted, so that it becomes possible selectively to execute either only room heating operation, or only hot water supply operation, or simultaneous room heating operation and hot water supply operation; wherein the hot water supply outlet, the thermal medium inlet, and the room heating outlet of the distribution means are at the same height.. . ... Noritz Corporation

Air supply and exhaust adapter for combustion apparatus

In an air supply and exhaust adapter for a combustion device of a forced air supply and exhaust type, with the combustion device comprising an air supply section and an exhaust section being provided to project from a top plate portion of an outer casing; comprising a base portion that comprises a box shaped configuration and an open bottom portion, an air supply intake portion that is formed on the top surface portion of the base portion so as to cover the air supply section and to take in air from the surroundings of the combustion device, a circumferential wall portion that surrounds the periphery of the exhaust section; and a communication passage defined between the top surface portion and the top plate portion so as to communicate the space between the exhaust section and the circumferential wall portion with the air supply intake portion; the communication passage being constructed so that, due to the operation of the air blower means, the gauge pressure therein becomes negative.. . ... Noritz Corporation

Case for housing electric board

A case for housing an electric board of the present invention includes: a case body with a front side opened for housing an electric board inside the case body; and a lid that closes a front side of the case body, the case body having a guide portion for sliding and moving the lid parallel to the front side, and a locking portion that locks the lid slid along the guide portion, the lid having a sliding portion that slides along the guide portion, and an engaging portion that engages with the locking portion while the front side of the case body is closed. The case further includes a restricting portion provided between an inner surface of the lid and the case body to restrict sliding movement of the lid in an opening direction of the lid.. ... Noritz Corporation

Fan and water heater provided with the same, and impeller and water heater provided with the same

A fan includes: an impeller including a main plate having a first plane, a plurality of first blades each formed the first plane, and a shroud formed integrally with the plurality of first blades; a fan case; a drive source; and a rotation shaft. The first blades each include a linearly protruding region that is linearly increased in height from an outer circumferential side to an inner circumferential side, and a curvedly protruding region that is curvedly increased in height from the outer circumferential side to the inner circumferential side, the height extending in a direction in which each first blade protrudes. ... Noritz Corporation

Heat exchanger and hot water apparatus

A heat exchanger includes a heat transfer tube and a baffle. The baffle includes a main body portion, a first protruding portion, a second protruding portion, a first wall, and a second wall. ... Noritz Corporation

Fan and water heater provided with the same, and impeller and water heater provided with the same

A fan includes: an impeller including a main plate having a first plane, a plurality of first blades each formed the first plane, and a shroud formed integrally with the plurality of first blades; a fan case; a drive source; and a rotation shaft. The first blades each include a linearly protruding region that is linearly increased in height from an outer circumferential side to an inner circumferential side, and a curvedly protruding region that is curvedly increased in height from the outer circumferential side to the inner circumferential side, the height extending in a direction in which each first blade protrudes. ... Noritz Corporation

Heat exchanger, hot water apparatus, and method of manufacturing heat exchanger

A fin has a plurality of insertion holes in an elliptical shape through which a heat transfer tube is inserted and contains stainless steel as a material. The plurality of insertion holes are disposed as being aligned in a single row in a first direction. ... Noritz Corporation

Heating device with hot water supply function

A heating device with hot water supply function includes: a combustion means; a main heat exchanger; a circulation passage connecting the main heat exchanger to an heating apparatus; a circulation pump provided in the circulation passage; a bypass passage that branches off from the circulation passage and bypasses the room heating apparatus; a secondary heat exchanger provided in the bypass passage; a cold water supply passage for supplying cold water to the secondary heat exchanger; a hot water supply passage for supplying hot water heated by the secondary heat exchanger; a hot water supply bypass passage that connects the cold water supply passage to the hot water supply passage bypassing the secondary heat exchanger; a flow adjustment means for adjusting the flow rate in the hot water supply bypass passage and thereby controlling the temperature of hot water to be supplied; and an expanded passage portion of the hot water supply passage whose diameter is increased from an intermediate portion of the hot water supply passage to its downstream end.. . ... Noritz Corporation

Flow rate regulation apparatus and hot water apparatus

A flow rate regulation apparatus according to one embodiment includes a main body portion including an incoming water flow path, a collar portion arranged in the main body portion and provided with a first through hole along a direction of extension of the incoming water flow path, and a valve shaft made of a resin and inserted in the first through hole, the valve shaft including a first large-diameter portion, a second large-diameter portion, and a first small-diameter portion lying between the first large-diameter portion and the second large-diameter portion and being smaller in outer diameter than the first large-diameter portion and the second large-diameter portion.. . ... Noritz Corporation

Hot water apparatus

A hot water apparatus includes a burner, a sensible heat recovery heat exchanger, and an ignition plug. The sensible heat recovery heat exchanger includes a case. ... Noritz Corporation

Heat exchanger and hot water apparatus

A latent heat recovery heat exchanger includes a case, a heat exchange portion, and a straightening vane. The heat exchange portion includes a plurality of heat transfer plates surrounded by a peripheral wall portion of the case and layered on one another, each of the plurality of heat transfer plates extending in a direction from an inlet toward an outlet. ... Noritz Corporation

03/29/18 / #20180087805

Hot water apparatus

A hot water apparatus includes a burner, a latent heat recovery heat exchanger, a housing, a fixing member, an attachment member, and a straightening vane. The fixing member is configured to fix the latent heat recovery heat exchanger to the housing. ... Noritz Corporation

03/01/18 / #20180058719

Burner case production method and burner case

The burner case has a first member having a caulking portion and a second member having a facing portion facing the caulking portion and an extending portion for caulking, the extending portion extending from the facing portion, the caulking portion being held between the facing portion and the extending portion by bending the extending portion. A part of the extending portion in longitudinal direction constitutes a claw portion. ... Noritz Corporation

12/28/17 / #20170370574

Gas supply manifold and gas combustion device provided with the same

A cover member of a gas supply manifold has a bent rising wall portion that is formed by bending a part of the cover member so as to rise in an opposite direction of a main body. The bent rising wall portion is in a form of a loop surrounding the entire circumference of a gas supply flow path and an area around the gas supply flow path. ... Noritz Corporation

10/05/17 / #20170284665

Closing member and exhaust structure for combustion apparatus

A closing member includes an annular portion and a flange portion. The annular portion is provided with a through hole and is in contact with an outer circumferential surface of an exhaust tube in at least a part of the through hole. ... Noritz Corporation

07/27/17 / #20170211844

Hot water supply device

A hot water supply device includes a heat exchanger, a temperature detection sensor detecting the surface temperature of the heat exchanger, and a fixing fitting fixing the sensor to a casing of the heat exchanger. The heat exchanger includes heat exchange tubing, a plurality of fins brazed to the heat exchange tubing, and the casing within which the tubing and the fins are housed, and to which both end portions of each of the fins are brazed. ... Noritz Corporation

07/20/17 / #20170205113

Fin-and-tube type heat exchanger and water heater including the same

A fin-and-tube type heat exchanger includes: a plurality of plate fins arranged in a case side by side in a fore-and-aft direction of the case; and a heat transfer tube including a plurality of straight-type tubular bodies each passing through these plurality of plate fins. First and second plate fins arranged side by side in the right-and-left width direction of the case are provided as a plurality of plate fins. ... Noritz Corporation

07/20/17 / #20170205067

Burner case and burner device provided with the burner case

A burner case and a burner device provided with the burner case are disclosed. A cover for closing an opening of a case body of the burner case is attached to the case body by a first caulking portion and a second caulking portion. ... Noritz Corporation

06/29/17 / #20170184349

Heat exchanger and hot water apparatus

According to the present invention, a heat exchanger comprises a fin having a plurality of through holes. The plurality of through holes include mutually adjacent first and second through holes disposed on a side closest to a heating gas's inlet side. ... Noritz Corporation

06/29/17 / #20170184324

Gas supply manifold and production method of gas supply manifold

A gas supply manifold has a nozzle forming member having a plurality of gas injection nozzles, a cover member configured to be overlapped on the nozzle forming member, and a caulking-fastening portion configured to fasten the nozzle forming member and the cover member. The caulking-fastening portion is configured such that a convex portion provided for one of the nozzle forming member and the cover member penetrates a hole provided for the other member, and a tip end portion of the convex portion has an engagement portion, the engagement portion having a larger diameter or a larger width than the hole and being engaged with a peripheral edge portion of the hole. ... Noritz Corporation

06/22/17 / #20170176047

Plate-type heat exchanger, hot water apparatus, and method for manufacturing plate-type heat exchanger

A plate-type heat exchanger includes a first heat transfer plate and a second heat transfer plate. The first heat transfer plate has a joint projection portion. ... Noritz Corporation

05/11/17 / #20170130960

Exhaust adapter, exhaust structure for water heater, and method for installing exhaust adapter

An exhaust adapter secures an exhaust tube relative to an exhaust pipe. The exhaust adapter is formed to have an annular shape enclosing a through hole, and is mounted on the outer peripheral surface of the exhaust tube and on the inner peripheral surface of the exhaust pipe by inserting the exhaust tube into the through hole. ... Noritz Corporation

05/04/17 / #20170122556

Exhaust tube holding member, exhaust structure for combustion apparatus, and method for installing exhaust structure for combustion apparatus

An exhaust tube holding member for holding an exhaust tube inside an exhaust pipe includes a main body. The exhaust tube is connected to a combustion apparatus and introduced into the exhaust pipe. ... Noritz Corporation

04/27/17 / #20170115001

Exhaust structure for combustion apparatus

An exhaust structure for combustion apparatus includes an exhaust tube connected to a water heater, an exhaust pipe through which the exhaust tube is introduced, and an exhaust tube fixing member for fixing a position of the exhaust tube relative to the exhaust pipe. The exhaust tube fixing member includes a first fixing portion having a cylindrical shape and fixed to the exhaust tube, and an attaching portion connected to the first fixing portion and attached to the exhaust pipe. ... Noritz Corporation

04/20/17 / #20170108242

Water heating apparatus and water heating system

A water heating apparatus includes: a water heating circuit; a heater for heating the water heating circuit; and a controller for controlling the water heating apparatus. The water heating circuit includes a heat exchanger for heating a fluid including water and hot water, and a pipe for supplying the fluid via the heat exchanger. ... Noritz Corporation

04/20/17 / #20170108211

Water heating apparatus and system having a scale detecting function

A control unit includes a scale detection unit for detecting, while the a burner provides combustion, occurrence of clogging with scale in a tube of a heat exchanger, and an output unit for outputting a result of a detection by the scale detection unit, a storage stores information including a numerical value representing how many times a surface temperature of the heat exchanger measured by a temperature measuring unit exceeds at least one of a plurality of threshold values. While the burner provides combustion when the surface temperature measured by the temperature measuring unit exceeds at least one of the plurality of threshold values the scale detection unit adds a predetermined value to the numerical value in the storage and when the numerical value attains a defined value or more the scale detection unit detects occurrence of clogging with scale.. ... Noritz Corporation

02/02/17 / #20170030664

Hot water supply device

A hot water supply device (1) includes: a fin and tube type heat exchanger (17) for aplying heat to water with combustion gas; a temperature detection means (32) for detecting an exhaust temperature after heat exchange by the heat exchanger (17); and a determination means that determines that scale is deposited within the heat exchange tubing (27) of the heat exchanger (17) if the exhaust temperature detected by the temperature detection means (32) is higher than a set temperature.. . ... Noritz Corporation








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