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31. 发明专利

JPH11337060A COMBUSTOR EQUIPPED WITH CO SENSOR 失效
公开(公告)号：JPH11337060A
公开(公告)日：1999-12-10
申请号：JP16292598
申请日：1998-05-26
申请人： NORITZ CORP
发明人： OBARA HIROKI , SATO YASUHIKO , ISHIZUNO MASAMITSU , TOUEI NOBUHIKO
IPC分类号： F23N3/08 , F23N5/00 , F23N5/24
摘要： PROBLEM TO BE SOLVED: To judge whether or not the life of an aparatus substantially completes its span with simple self diagnosis by grasping an actual combustion state (CO value). SOLUTION: A CO sensor-equipped combustor is adapted such that when CO concentration detected by a CO sensor 22 provided on an exhaust section 4a exceeds a predetermined value, the number of revolutions of a fan 7 is increased to correct stepwise combustion conditions. In the combustor, there is provided a controller 15. The controller is adapted such that when the correction of the number of revolution of the fan reaches the predetermined number of times, the controller judges whether or not the state of the use of the combustor exceeds a predetermined level. If so, then the controller reduces an output and continues combustion operation. When the combustion conditions are not improved successively thereafter, the life is displayed and the combustion operation is interrupted.

32. 发明专利

JPH11193960A HOT-WATER SUPPLY EQUIPMENT WITH HEAT-RETAINING FUNCTION 失效
公开(公告)号：JPH11193960A
公开(公告)日：1999-07-21
申请号：JP36767497
申请日：1997-12-26
申请人： NORITZ CORP
发明人： SATO YASUHIKO , ISHIZUNO MASAMITSU , MOTOOKA HIDENORI , OBARA HIROKI
IPC分类号： F24H1/10
摘要： PROBLEM TO BE SOLVED: To consider durability and maintain heat-retaining performance, by providing a control part for allowing a remaining water temperature sensor to set fire when temperature goes below a heat-retaining combustion starting temperature, for stopping heat-retaining combustion when temperature goes above it, and for decreasing the heat-retaining combustion starting temperature according to the number of ignition. SOLUTION: When a heat-retaining switch of remote controller of hot-water supply equipment is turned on, a heat-retaining function is operated after the supply of hot water is stopped, and hot water in a heat exchanger 3 is heated and the heat is retained by igniting a burner 1 intermittently, thus preventing temperature of the hot water from decreasing. Only a hot-water supply capacity switching solenoid valve 7 is opened to prevent hot water from boiling for burning with the minimum unit hot-water supply capacity. One combustion time is also set to a relatively short time. With an ignition interval, for example the temperature of remaining water in the hot-water supply equipment is detected by a temperature sensor and is variable depending on the difference to a setting temperature. An instant hot-water function may achieve operation at an arbitrary time zone set by a user or may automatically stop the instant hot-water function, even if an instant hot-water switch is not turned off when no hot-water equipment is used continuously for a fixed amount of time.

33. 发明专利

JPH1114045A OPERATION JUDGMENT METHOD OF AIR BLOW AMOUNT CONTROLLER AND HOT WATER SUPPLY APPARATUS 失效
公开(公告)号：JPH1114045A
公开(公告)日：1999-01-22
申请号：JP18437597
申请日：1997-06-24
申请人： NORITZ CORP
发明人： OBARA HIROKI , ISHIZUNO MASAMITSU , OKAMOTO HIDENORI , SATO YASUHIKO
IPC分类号： F23N1/02 , F23N3/00
摘要： PROBLEM TO BE SOLVED: To enable a check work, at an execution site, for checking if an air blow amount controller is acceptable or not by changing rotational speed of a blower fan, detecting an emitted CO value contained in an exhaust gas at a rotational speed after change and comparing it with a reference CO value so as to make a judgment of abnormality of air blow amount control operation. SOLUTION: In order to make operation judgment treatment of an air blow amount controller 9 in a hot water supply apparatus 1, at the time of tuning on a judgment starting switch a command for switching a fan motor 8 to a rotational speed of 'Great' is transmitted from an air blow amount judgment means 11 to a hot water supply controller 6 and combustion operation at a combustion quantity corresponding to the rotational speed of the fan motor 8 of 'Great' is started. At this time, detection signal of a CO sensor 10 is monitored by the air blow amount judgment means 11, and when detected exhaust CO value is within a reference CO value (x), combustion operation is carried out at a combustion quantity corresponding to a rotational speed of the fan motor 8 of 'Small'. If the exhaust CO value is out of the reference CO value range, air blow amount control operation abnormality is judged.

34. 发明专利

JPH07103419A COMBUSTION DEVICE 失效
公开(公告)号：JPH07103419A
公开(公告)日：1995-04-18
申请号：JP26958493
申请日：1993-09-30
申请人： NORITZ CORP
发明人： TONAI MASANORI , UEDA HIDEO , MIKI SHUNICHI , OKADA HIDEYUKI , ISHIZUNO MASAMITSU , NAKAI SATOSHI , NAGAI ITSUO
IPC分类号： F23D14/02 , F23D14/08
摘要： PURPOSE:To enable combustion to be stabilized by a method wherein an air passage box is arranged between a thick flame burner and a thin flame burner and secondary air is supplied near the thick flame. CONSTITUTION:Thin mixture gas generated at a thin mixture gas chamber 7 during combustion is flowed into an opening hole of a thin flame burner 3 to form a thin flame, the thick mixture gas generated at a thin mixture gas chamber 8 is flowed from an opening hole of a thick flame burner 4 to form the thick flame. Air flowed from the opening hole of an air passage box 9 supplies secondary air near the thick flame. In the case that a concentration of gas of the thick mixture gas is too thick due to external disturbance, the secondary air promotes combustion of the thick flame so as to dampen an incomplete combustion and lifting. The thin flame is made stable under a flame holding of thick flames at both sides. With such an arrangement as above, it is possible to make a stable combustion.

35. 发明专利

JPH06221525A BURNER 失效
公开(公告)号：JPH06221525A
公开(公告)日：1994-08-09
申请号：JP3278693
申请日：1993-01-27
申请人： NORITZ CORP
发明人： ISHIZUNO MASAMITSU , UEDA HIDEO , MIKI SHUNICHI , TONAI MASANORI , KAWAGUCHI SATORU
IPC分类号： F23C99/00 , F23D14/08 , F23D14/78 , F23C11/00
摘要： PURPOSE:To provide a burner, in which perfect combustion of secondary combustion on a surrounding wall is promoted, low in the concentration of NOx, low in the concentration of CO and/or HC, and the secondary combustion is stabilized without generating any lift therein. CONSTITUTION:A burner is provided with two-stage combustion mechanism wherein at least a combustion tube 10, ejecting mixture of fuel gas and air upwardly, a surrounding wall 20 for cooling primary combustion flame, which surrounds the upper part of the combustion tube 10, and a water cooling pipe 30, arranged on the outside surface of the surrounding wall 20, are provided to effect the primary combustion of the mixture from the combustion tube 10 in the lower space of the surrounding wall 20 and effect the secondary combustion of the same above the upper end opening of the surrounding wall 20. Air stream, supplied from the lower part along the outside of the surrounding wall 20, is supplied to secondary combustion flame and part of the same is supplied from an upper wall before the upper end opening 21 of the surrounding wall 20 into the surrounding wall 20 to mix it with unburnt gas before the secondary combustion.

36. 发明专利

JPH06221523A BURNER 失效
公开(公告)号：JPH06221523A
公开(公告)日：1994-08-09
申请号：JP3278993
申请日：1993-01-27
申请人： NORITZ CORP
发明人： ISHIZUNO MASAMITSU , UEDA HIDEO , MIKI SHUNICHI , TONAI MASANORI , OKADA HIDEYUKI , NAGAI ITSUO
IPC分类号： F23C99/00 , F23D14/08 , F23C11/00
摘要： PURPOSE:To provide a burner, in which primary combustion flame is stabilized and sound of vibration will never be generated even when the ejecting force of mixture from the mixture ejecting port of a combustion tube is increased by increasing a combustion capacity. CONSTITUTION:Ejecting ports 11, ejecting the mixture of fuel gas and air upward obliquely respectively, are provided on both slanted surfaces of the chevron type upper end section 12 of a combustion tube 10 and a surrounding wall 20, branched from both rims 12a of skirt of the chevron type upper end section 12 to surround the upper part of the combustion tube 10, is provided while an angle between the slanted surface of the chevron type upper end 12 and the surrounding wall 20, rising up into expanding direction from the rim 12a of skirt of the slanted surface, is determined so as to be less than 90 degrees.

37. 发明专利

JPH06147476A BURNER 失效
公开(公告)号：JPH06147476A
公开(公告)日：1994-05-27
申请号：JP31650792
申请日：1992-10-30
申请人： NORITZ CORP
发明人： TONAI MASANORI , UEDA HIDEO , MIKI SHUNICHI , KAWAGUCHI SATORU , ISHIZUNO MASAMITSU , WAKATA TAKESHI
IPC分类号： F23N5/18
摘要： PURPOSE:To improve a limit air velocity of wind resistant performance by raising a speed of a fan when an air pressure switch senses a reverse air flow, and controlling the speed of the fan corresponding to the reverse air flow until the reverse flow is not sensed at a steady speed. CONSTITUTION:A fan 4 is controlled to a predetermined speed (steady speed) responsive to a burning quantity of a burner 3 at the time of steady burning of a hot water supplying apparatus 1, and an air pressure switch 5 for sensing a reverse air flow is turned ON. When the reverse flow is sensed, the speed of the fan 4 is raised. Thus, when the switch 5 is turned OFF by the reverse flow, the speed of the fan 4 is raised until the switch 5 is again turned ON, i.e., a normal air flow rate is obtained against the reverse flow, and the speed of the fan to meet the strength of the reverse flow is set. Thus, a limit air speed of wind resistant performance can be improved.

38. 发明专利

JPH04273901A COMBUSTION DEVICE 失效
公开(公告)号：JPH04273901A
公开(公告)日：1992-09-30
申请号：JP5943991
申请日：1991-02-28
申请人： NORITZ CORP
发明人： KAWAGUCHI SATORU , SHIMAZU MASAHIKO , UEDA HIDEO , MIKI SHUNICHI , SHIROTANI TOMOHIKO , ISHIZUNO MASAMITSU
IPC分类号： F23C99/00 , F23D14/02
摘要： PURPOSE:To reduce NOx generation from a household combustion device for boiler, etc., by a method wherein a concentrated gas combustion pipe and a lean gas combustion pipe are formed in a set and their burner ports face each other so that flames from both combustion pipes strike against each other during combustion. CONSTITUTION:A concentrated gas combustion pipe 3 for burning concentrated gas and a lean gas combustion pipe 4 for burning lean combustion gas are arranged so that their burner ports face each other at an angle and their flames strike against each other. With this constitution, concentrated gas having a low excess air ration and lean gas having a high excess air ratio burn at the combustion pipes respectively and their flames strike against each other to intermix. Therefore, as both gases intermix well and are diluted by surrounding fluid, a high temperature zone is narrowed and combustion is stabilized, resulting in a reduction of NOx generation.

39. 发明专利

JPH04251104A GAS BURNER 失效
公开(公告)号：JPH04251104A
公开(公告)日：1992-09-07
申请号：JP41650990
申请日：1990-12-27
申请人： NORITZ CORP
发明人： SHIROTANI TOMOHIKO , MIKI SHUNICHI , UEDA HIDEO , SHIMAZU MASAHIKO , KAWAGUCHI SATORU , ISHIZUNO MASAMITSU
IPC分类号： F23C99/00 , F23D14/08 , F23D14/76
摘要： PURPOSE:To reduce the volume of the discharged nitrogen oxides by making the temperature of the flame uniform throughout the burner. CONSTITUTION:Many red hot rods 3 are laid parallel at the right angle to the longitudinal direction of a combustion tube 1 above the main flame port of the combustion tube 1, and those red hot rods 3 are heated red-hot by the flame during combustion. The temperature of the flame becomes uniform by those many rod hot rods.

40. 发明专利

JPH04203703A GAS BURNER 失效
公开(公告)号：JPH04203703A
公开(公告)日：1992-07-24
申请号：JP33424190
申请日：1990-11-29
申请人： NORITZ CORP
发明人： SHIMAZU MASAHIKO , KAWAGUCHI SATORU , UEDA HIDEO , MIKI SHUNICHI , SHIROTANI TOMOHIKO , ISHIZUNO MASAMITSU
IPC分类号： F23D14/02 , F23D14/08
摘要： PURPOSE:To reduce the generation of NOx, stabilize the combustion and lower combustion noises by providing an inner combustion tube provided with a concentrated gas burner port in the central section of a combustion tube and providing a through-hole on the side faces of the lower section of the inner combustion tube, forming a venturi section in a mixing chamber located above the through-hole, and providing a partition plate in the upper section of the mixing chamber. CONSTITUTION:At the time of combustion a gas of a low excessive air rate that is in an inner combustion tube 5 is blown out of a concentrated gas burner port 6 and burns, and, at the same time, it is blown out of an auxiliary burner port 7 and burns to form an auxiliary flame in the gap 10 in the pressure reducing wall 9. Further, the gas blown out of a through-hole 8 mixes with the air from a secondary air port 3 and they are mixed well uniformly by the venturi section 14, generating a dilution gas with a high rate of excessive air, and they are supplied to a diluted gas burner port 12. Localized high temperature sections are eliminated by the combustion of both concentrated and diluted gases at the concentrated gas burner port 6 and the dilution gas burner port 12, and the generation of NOx is reduced. On the both side sections of a partition plate 11 the upper gap 13 is enlarged and the mixture gas blown out of both sides of the partition plate 11 loses its velocity and burns, stabilizing the combustion and lowering the combustion noises.

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