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1. 发明专利

JPH0743089A HEAT EXCHANGER 失效
公开(公告)号：JPH0743089A
公开(公告)日：1995-02-10
申请号：JP17020192
申请日：1992-06-03
申请人： NORITZ CORP
发明人： HOU TAKAO , IKEDA YOSHITOMO , FUKUHARA AKIRA , IKEDA HIROSHI , HARAMAKI SATORU , FUKUI HIDEKAZU , MORISHITA ATSUHIRO , KAWAGUCHI YUTAKA , KAMIYOSHI EIJI
IPC分类号： F28F1/32 , F28F9/00 , F28F9/04
摘要： PURPOSE:To prevent the deterioration of heat exchanging efficiency of a heat exchanger by preventing the leakage of exhaust gas through a gap between a tube plate and a heat transfer tube. CONSTITUTION:In a multitude of funs 3 except fins at both ends, heat transfer tubes 4 are penetrated through heat transfer tube penetrating holes 5 and fin collars 6 while the heat transfer tubes 4 are welded by welding members 10 penetrated through the notches 7 at the rims of the fins. In the fins 2 at both ends, only cylindrical fin collars 8 are provided at the rims of the penetrating holes for the heat transfer tubes to prevent the outflow of the welding members 10 to the side of a tube plate 1. Further, a projected piece 11, bent so as to have the shape of a chevron in the section thereof, is provided at the lower end of the fins 2 of both ends across the whole width of the fins to contact them elastically with the inner surface of the tube plate 1 and blockade a gap between the fin 2 and the inner surface of the tube plate 1 by the projected piece 11 whereby the inflow of exhaust gas can be prevented.

2. 发明专利

JPH06288632A WATER HEATER 失效
公开(公告)号：JPH06288632A
公开(公告)日：1994-10-18
申请号：JP7901792
申请日：1992-02-28
申请人： NORITZ CORP
发明人： FUKUHARA AKIRA , IKEDA YOSHITOMO , IKEDA HIROSHI , HARAMAKI SATORU , HOU TAKAO , FUKUI HIDEKAZU , MORISHITA ATSUHIRO , KAWAGUCHI YUTAKA
IPC分类号： F24H1/10
摘要： PURPOSE:To prevent boiling in a heat exchanger by computing an outlet temperature of the heat exchanger based on the temperature of water intake and a set temperature to control the opening or closing of a bypass water solenoid valve based on the results. CONSTITUTION:An outlet temperature of a heat exchanger 1 is computed based on an intake thermistor 7 for detecting the temperature of intake and a temperature setting section 13 for setting the temperature of the hot water delivered. The opening or closing off bypass water solenoid valve 10 provided on a bypass path 5 is controlled based on the computed value. Thus, the state of the bypass water solenoid valve 10 can be determined at the initial transition of the control of delivering hot water thereby enabling the prevention of boiling while allowing the supply of hot water without making hot water delivery temperature characteristic unstable.

3. 发明专利

JPH06288535A SECONDARY PRESSURE REGULATING METHOD IN HOT WATER SUPPLIER 失效
公开(公告)号：JPH06288535A
公开(公告)日：1994-10-11
申请号：JP4209692
申请日：1992-01-31
申请人： NORITZ CORP
发明人： HOU TAKAO , IKEDA YOSHITOMO , FUKUHARA AKIRA , IKEDA HIROSHI , HARAMAKI SATORU , FUKUI HIDEKAZU , MORISHITA ATSUHIRO , KAWAGUCHI YUTAKA , OBARA HIROKI
IPC分类号： F23N1/08 , F24H1/10
摘要： PURPOSE:To provide a maximum secondary pressure regulating method for a gas proportional valve without a fear of boiling in a hot water supplier including a bypass passage and the gas proportional valve. CONSTITUTION:Hot water supply trial operation is performed by opening a hot water cock for water supply just after a hot water supplier 100 is installed, and firing the hot water supplier, and simultaneously maximum and minimum secondary pressures of a gas proportional valve 15 are regulated by adjusting a regulation variable resistor provided on a controller 30. In the regulation of the maximum secondary pressure, once a maximum secondary pressure setting switch provided on the controller 32 is turned on, a capability changeover valve 14 is fylly opened to provide a maximum capability whereby a combustion fan 17 is driven at maximum revolutions for maximum combustion. Simultaneously, a water amount servo valve 7 is fully opened to permit a bypass solenoid valve 6 to be closed irrespective of set temperature upon the hot water supply trial operation and the secondary pressure is regulated to be rated secondary pressure by adjusting the maximum secondary pressure regulation variable resistor while observing the secondary pressure.

4. 发明专利

JPH06137544A OPENING/CLOSING TYPE GALLERY WITH FILTER 失效
公开(公告)号：JPH06137544A
公开(公告)日：1994-05-17
申请号：JP10584392
申请日：1992-03-31
申请人： NORITZ CORP
发明人： KAMIYOSHI EIJI , IKEDA YOSHITOMO , FUKUHARA AKIRA , IKEDA HIROSHI , HARAMAKI SATORU , HOU TAKAO , FUKUI HIDEKAZU , MORISHITA ATSUHIRO , KAWAGUCHI YUTAKA
IPC分类号： F23L1/00 , F24H9/02
摘要： PURPOSE:To provide an opening/closing type gallery with a filter which achieves higher maintainability with the simplification of cleaning and exchange by making clogging hard to occur with the securing of a wider area of the filter while facilitating the loading thereof on or the unloading thereof from the apparatus. CONSTITUTION:An opening 3 with a triangular-pole shaped gallery 2 free to load or unload and an exhaust hole 10 are provided on the top surface of a casing 1 of an indoor installation type burning device. The opening 3 is made to communicate with an upper end opening of a sucking duct 4 erected at the internal rear part of the casing 1 and the lower part of the sucking duct 4 is made to communicate with the suction side of a burning section. This facilitates the loading or unloading of the gallery 2 to achieve easier work of maintenance and inspection. A filter 5 is removed simply by pulling out the gallery 2 holding a loading/unloading knob 53 of a frame 51.

5. 发明专利

JPH0650604A BYPASS MIXTURE CONTROL SYSTEM 失效
公开(公告)号：JPH0650604A
公开(公告)日：1994-02-25
申请号：JP15625591
申请日：1991-05-31
申请人： NORITZ CORP
发明人： HARAMAKI SATORU , IKEDA YOSHITOMO , FUKUHARA AKIRA , IKEDA HIROSHI , FUKUI HIDEKAZU , HOU TAKAO , MORISHITA ATSUHIRO , HAMADA MAKOTO , YOSHIDA AKIRA
IPC分类号： F24H1/10
摘要： PURPOSE:To provide a bypass mixture control system which enables suppression of the occurrence of ON and OFF hunting by using a single flow rate sensor without excessively increasing hysteresis of MOQ ON and OFF. CONSTITUTION:A bypass water amount regulating valve 61 to regulate a quantity QB of bypass water and have a function to confirm a present position is located in a bypass passage 23 and a flow rate sensor 71 to detect a quantity QC of inflow water is arranged in an inflow passage 21. The change of a distribution ratio alpha=QB/QC between a quantity of bypass water and a quantity of inflow water responding to the change of an opening theta of a bypass water amount regulating valve is previously determined, and the distribution ratio alphais calculated from a present opening theta0 of the bypass water amount regulating valve 61. From the detected inflow water quantity QC and the distribution rate alpha, a total water pass quantity QT (QT=QB+QC= a mixture outflow hot water quantity QM) is calculated. When the calculated total water pass quantity QT exceeds a minimum working water quantity MOQT of a total flow rate during operation waiting and an inflow water quantity QC exceeds a minimum working water quantity MOQH of a water pass amount on the can body side during waiting operation, hot water feed operation is started.

6. 发明专利

JPH0618091A HOT-WATER SUPPLIER 失效
公开(公告)号：JPH0618091A
公开(公告)日：1994-01-25
申请号：JP19775392
申请日：1992-06-30
申请人： NORITZ CORP
发明人： MORISHITA ATSUHIRO , IKEDA YOSHITOMO , FUKUHARA AKIRA , IKEDA HIROSHI , HARAMAKI SATORU , HOU TAKAO , FUKUI HIDEKAZU , KAWAGUCHI YUTAKA , KAMIYOSHI EIJI
IPC分类号： F24H1/10
摘要： PURPOSE:To prevent freezing surely without generating any waste of electric power in a hot-water supplier provided with freezing preventing function. CONSTITUTION:When a temperature sensor detects the heater operating temperature of a freezing preventing heater plus 3 deg.C (S21), a fan is operated for one minute (S22), outside air is introduced into an instrument to reduce the temperature difference between the outside air and the inside of the instrument, then, the temperature in the instrument is detected (S23) and the freezing preventing heater is operated (S25) when the detected temperature is lower than the operating temperature of the heater. Accordingly, the fan is operated at the predetermined temperature of heater operating temperature plus 3 deg.C before detecting the operating temperature of the heater whereby the temperature difference between the outside air and the inside of the instrument is reduced and the freezing preventing heater will never be operated in too much early period.

7. 发明专利

JPH051827A AUTOMATIC BATH BOILER UNIT 失效
公开(公告)号：JPH051827A
公开(公告)日：1993-01-08
申请号：JP15176391
申请日：1991-06-24
申请人： NORITZ CORP
发明人： FUKUHARA AKIRA , IKEDA YOSHITOMO , IKEDA HIROSHI , HOU TAKAO , HARAMAKI SATORU , FUKUI HIDEKAZU , MORISHITA ATSUHIRO
IPC分类号： F24D17/00 , F24H1/00
摘要： PURPOSE:To perform automatic hot-water filling and additional heating of baths installed in dwelling houses or rooms to which hot-water is supplied from a central hot-water supply system. CONSTITUTION:Hot-water is supplied from a single hot-water supply source 1 to dwelling houses or rooms through a hot-water distribution circuit 2. An automatic bath boiler unit 6 is provided with a mixing circuit 8, a bath water circulation circuit 10, a bath water filling circuit 12, an additional heating circuit 14 and a controller 20. Hot-water from the distribution circuit 2 and water from a water supply pipe 4 are mixed together in the mixing circuit 8 to produce hot-water having a specified temperature, and bath water is circulated and heated by a pump 32 and a bath heat exchanger 30 through the bath water circulation circuit 10. Hot-water from the mixing circuit 8 is supplied to the bath water circulation circuit 10 through the bath water filling circuit 12, and the additional heating circuit 14 diverges from the hot-water distribution circuit 2 to supply hot-water to the bath heat exchanger 30 for indirect heat exchanging. The controller 20 controls actions of the circuits 8, 10, 12 and 14.

8. 发明专利

JPH04270829A HOT WATER FEEDER 失效
公开(公告)号：JPH04270829A
公开(公告)日：1992-09-28
申请号：JP5398691
申请日：1991-02-25
申请人： NORITZ CORP
发明人： IKEDA YOSHITOMO , FUKUHARA AKIRA , HARAMAKI SATORU , IKEDA HIROSHI , TAMADA HARUHIKO , FUKUI HIDEKAZU , HOU TAKAO
IPC分类号： F24D17/00 , F24H1/10
摘要： PURPOSE:To enable hot water returned from a hot water feeding pipe line through a returning pipe line to be positively circulated to a heat exchanger by a method wherein a check valve for preventing water from flowing from a returning pipe line connection point to a bypass pipe line branch point is disposed between a branch point of water feeding pipe line and a returning pipe line connection point. CONSTITUTION:Water from a water feeding pipe line 1 is heated by a heat exchanger 2, passes through a hot water feeding-out pipe line 3 and then fed out from a hot water feeding-out plug 4. The water feeding pipe line 1 and the hot water feeding-out pipe line 3 are connected by a bypassing pipe line 6 bypassing the heat exchanger 2. This bypassing pipe line 6 is provided with a water amount adjusting valve 7 to be adjusted in response to a hot water temperature from the hot water feeding-out 4. A downstream side of a bypassing pipe line connection point B of the hot water feeding pipe line 3 and a downstream side of a branch point A of a bypassing pipe line 6 in the water feeding pipe line 1 are connected by a hot water circulation pipe line 8. In such a hot water feeding device, a check valve 20 is disposed between the pipe line branch A and the pipe line connection point D in the water feeding pipe line 1 so as to enable hot water from a returning pipe line 8 to be circulated positively to the heat exchanger 2.

9. 发明专利

JPH0462313A GAS COMBUSTION DEVICE 失效
公开(公告)号：JPH0462313A
公开(公告)日：1992-02-27
申请号：JP17398290
申请日：1990-06-29
申请人： NORITZ CORP
发明人： FUKUI HIDEKAZU , FUKUHARA AKIRA , HOU TAKAO , TAMADA HARUHIKO , IKEDA YOSHITOMO , HARAMAKI SATORU , IKEDA HIROSHI
IPC分类号： F23N1/00
摘要： PURPOSE:To make it possible to set a gas secondary pressure under a forced high performance condition in which the number of combustion tubes is reduced, and prevent a boiling condition from being generated at the time of the gas secondary pressure setting in the field to perform the setting safely by turning on the high performance press button switch and a low performance press button switch simultaneously. CONSTITUTION:At the time of secondary pressure setting, when all of eighteen combustion tubes 1 are made to burn forcibly at a high level, a high performance press button switch SW1 is turned on, and a low performance press button switch SW2 is turned off. When all of the eighteen combustion tubes 1 are made to burn forcibly at a low level, the high performance press button switch SW1 is turned off, and the low performance press button switch SW2 is turned on, and a secondary pressure is set by manual adjustment such as volume knob, etc. Under a condition of eighteen combustion tubes in forced high performance, in the field where boiling takes place, both press button switches SW1, SW2 are turned on simultaneously. By doing this, a condition in which eight combustion tubes are made to burn forcibly at a high level is given, and the secondary pressure can be set under this condition.

10. 发明专利

JPH06288646A STRUCTURE OF FIN OF HEAT EXCHANGER 失效
公开(公告)号：JPH06288646A
公开(公告)日：1994-10-18
申请号：JP10584492
申请日：1992-03-31
申请人： NORITZ CORP
发明人： MORISHITA ATSUHIRO , IKEDA YOSHITOMO , FUKUHARA AKIRA , IKEDA HIROSHI , HARAMAKI SATORU , HOU TAKAO , FUKUI HIDEKAZU , KAMIYOSHI EIJI , KAWAGUCHI YUTAKA
IPC分类号： F24H9/00 , F28F1/32 , F28F9/00 , F28F9/007
摘要： PURPOSE:To surely braze a fin to side walls of a heat exchange chamber by providing at both ends of the fin joining flanges extending at a right angle from the fin with each bent inward by a prescribed angle at the upper end. CONSTITUTION:At each of the two ends of a fin 1 a joining flange 5 bent at a right angle to the fin 1 is formed to the same height as the flanges at the edges of water tube-passing holes 2, 20 and the flanges at the edges of flanged openings 4. The upper end 51 of the joining flange 5 is cut off at a cut part 50 and the upper end 51 is bent by a prescribed angle toward the water tube- passing holes 2. Water tubes 9 are fitted respectively through the water tube- passing holes 2, 20 and filler metal is inserted into filler metal insertion holes 3 and, on the other hand, filter metal is placed in a groovelike part 7 formed between the upper end 51 of the joining flange 5 and the side wall 6 of the shell body and heated. As a result, brazing can be made with the molten filler metal flowing only into the space between the joining flange 5 and the side wall 6 of the shell body, not flowing into the combustion chamber.

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