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71. 发明专利

JP2000009344A HOT WATER SUPPLY APPARATUS 失效
公开(公告)号：JP2000009344A
公开(公告)日：2000-01-14
申请号：JP19106198
申请日：1998-06-22
申请人： GASTAR CORP
发明人： WATANABE HISAYASU , SAITO TOSHIHISA , SATO TETSUYA
IPC分类号： F24H1/10
摘要： PROBLEM TO BE SOLVED: To improve hot water delivery characteristics by detecting any trouble in an intermediate value output state of a temperature sensor on a hot water supply side. SOLUTION: A hot water supply pipe 13 includes a heat exchange outlet temperature sensor Tout and a hot water delivery temperature sensor Tmix on the upstream side and the downstream side from a connection point P2 with a bypass passage 15. Temperature of hot water passing through the other temperature sensor is calculated on the basis of detected temperature by one of the heat exchange outlet temperature sensor Tout and the exit hot water temperature sensor Tmix, and the detected temperature by the other temperature sensor and the calculated value are compared for trouble detection.

72. 发明专利

JPH11304248A GAS HOT WATER SUPPLY APPARATUS WITH FUNCTION FOR OTHER USE 失效
公开(公告)号：JPH11304248A
公开(公告)日：1999-11-05
申请号：JP12527598
申请日：1998-04-20
申请人： GASTAR CORP
发明人： SAITO TOSHIHISA , SATO TETSUYA , WATANABE HISAYASU
IPC分类号： F24H1/00 , F24H1/10
摘要： PROBLEM TO BE SOLVED: To obtain a gas hot water supply apparatus of single storage water heater body two water channel type with function for other use, e.g. extra firing unit, in which stability of delivery hot water temperature is enhanced at the time of simultaneous execution of hot water supply and extra firing. SOLUTION: At the time of single execution of hot water supply, hot water supply request heating value G0 is operated based on the information of flow rate of water flowing through a hot water supply piping, temperature of water flowing toward a heat exchanging section and set temperature and a feedforward output component I0 is operated from the hot water supply request heating value and a stored data. At the time of simultaneous execution of hot water supply and extra firing, a temporary feedforward output component I0 is operated similarly. Furthermore, a correction amount ΔI is operated based on the bathtub water temperature and circulation flow rate and added to the temporary feedforward output component I0 thus determining a feedforward output component I1 . Function of the correction amount ΔI is corrected based on the information containing the feedforward output component at the time of simultaneous execution of hot water supply and extra firing.

73. 发明专利

JPH11304239A GAS HOT WATER SUPPLY APPARATUS 失效
公开(公告)号：JPH11304239A
公开(公告)日：1999-11-05
申请号：JP12527898
申请日：1998-04-20
申请人： GASTAR CORP
发明人： SAITO TOSHIHISA , SATO TETSUYA , WATANABE HISAYASU
IPC分类号： F24H1/00
摘要： PROBLEM TO BE SOLVED: To prevent dew formation at heat exchanging section surely. SOLUTION: A control section stores data indicative of the linear relationship between heat consumption for hot water supply and current supply to a proportional valve (hereinafter referred to proportional valve current) in the form of map or operational equation (linear equation). A required heat consumption for hot water supply is operated based on a supply water temperature, a set temperature and delivery hot water temperature and then a corresponding proportional valve current is determined. The heat consumption for hot water supply is set with a lower limit GMIN. When an operated heat consumption for hot water supply is lower than the lower limit GMIN, the proportional valve current is fixed at a level corresponding to the lower limit GMIN. Consequently, actual heat consumption for hot water supply exceeds the operated value and the delivery hot water temperature exceeds a set level, but dew formation at the heat exchanging section can be prevented.

74. 发明专利

JPH11211227A SINGLE BODY DOUBLE WATER PATH COMBUSTOR 失效
公开(公告)号：JPH11211227A
公开(公告)日：1999-08-06
申请号：JP2927798
申请日：1998-01-26
申请人： GASTAR CORP
发明人： SAITO TOSHIHISA , SATO TETSUYA
IPC分类号： F23N5/00 , F24H1/00
摘要： PROBLEM TO BE SOLVED: To detect leakage of hot water automatically during independent operation of additional heating. SOLUTION: A hot water supply heat exchanger 2 is integrated with an additional heating heat exchanger 3 and provided with a section for detecting the flow rate of a circulation channel 23 based on the temperature detected by a sensor 31 for detecting the hot water temperature of the heat exchanger 2 utilizing the phenomenon where heat is absorbed from the hot water supply heat exchanger 2 side to the additional heating heat exchanger 3 side by hot water circulating through the heat exchanger 3 and the quantity of heat to be absorbed depends on the flow rate of hot water circulating through the heat exchanger 3. Since heat of the heat exchanger 2 is absorbed not only to the heat exchanger 3 but by the leakage hot water upon occurrence of hot water leakage, a hot water leakage signal is delivered when the maximum circulation flow rate is exceeded.

75. 发明专利

JPH11173665A 1 CAN/2 WATERWAY WATER HEATER 失效
公开(公告)号：JPH11173665A
公开(公告)日：1999-07-02
申请号：JP35629197
申请日：1997-12-09
申请人： GASTAR CORP
发明人： WADA TATSUYA , NOGUCHI YUKINOBU , SAITO TOSHIHISA
IPC分类号： F24H1/00
摘要： PROBLEM TO BE SOLVED: To enable accurate detection of the presence of a heat medium circulating through a non-hot water supply side circulation path such as additional heating circulation path in a 1 can/2 waterway hot water heater. SOLUTION: A combustion control section 42 drives a circulation pump 20 receiving an additional heating operation order during the single hot water supply operation and detects changes in the temperature of supplied hot water and delivered hot water as caused with the driving of the circulation pump 20 by a delivered hot water temperature sensor 38. Based on the change in the temperature of supplied hot water and delivered hot water, an additional heating circulation path water flow judging section 43 judges that no flow of hot water exists in an additional heating circulation path 24 when a drop in the temperature of supplied hot water and delivered hot water associated with the driving of the circulation pump is within a variation of a predetermined reference temperature for judging that no flow exists in the additional heating circulation path or judges that a flow of hot water exists in the additional heating circulation path when the drop in the temperature of supplied hot water and delivered hot water is larger exceeding a predetermined reference variation for judging that any flow of hot water exists in the additional heating circulation path.

76. 发明专利

JPH11153350A ONE-BOILER TWO-CHANNEL HOT-WATER SUPPLIER 失效
公开(公告)号：JPH11153350A
公开(公告)日：1999-06-08
申请号：JP33776697
申请日：1997-11-21
申请人： GASTAR CORP
发明人： TANAKA YOSHIHIKO , SAITO TOSHIHISA
IPC分类号： F24H1/00
摘要： PROBLEM TO BE SOLVED: To provide a one-boiler two-channel hot-water supplier provided with a non-hot-water-supply side combustion lamp actuating function for reheating, etc., that can be utilized by the user of the supplier without anxiety. SOLUTION: When a reheating command is given from a remote controller 41, a reheating lamp actuating means 51 immediately makes a reheating combustion lamp 54 start reheating alarm operation. While sole reheating operation is effected, a reheating sole operation control section 45 stops burner combustion when the temperature of hot water in a hot water supply heat exchanger reches or exceeds off temperature and restarts the burner combustion when the temperature of the hot water becomes not higher than on temperature. A reheating flow water detecting means 53 detects the flow of water in a reheating circulation passage based on water temperature data of the heat exchanger and, when the detecting means 53 does not detect the flow of the water within a set period of time, a reheating lamp stopping means 52 stops the reheating alarm operation of the reheating combustion lamp 54.

77. 发明专利

JPH11150969A APPARATUS AND METHOD FOR CONTROLLING VALVE MOTOR 失效
公开(公告)号：JPH11150969A
公开(公告)日：1999-06-02
申请号：JP31058297
申请日：1997-11-12
申请人： GASTAR CORP
发明人： SATO TETSUYA , WATANABE HISAYASU , SAITO TOSHIHISA , INOUE TAKESHI , OKAMOTO KIKUO
IPC分类号： F16K31/04 , H02H7/085 , H02P3/06
摘要： PROBLEM TO BE SOLVED: To make it possible to close a valve perfectly, and to prevent breakage of a gear, etc., caused by obstruction caused by a foreign matter, by detecting the malfunction of the valve. SOLUTION: A current quantity detecting element 52 detects the quantity of a current flowing in a motor 41 for driving a valve, and a driving part 51 stops its drive if the quantity of the current flowing in the motor 41 exceeds a specified value. Besides, a measuring part 53 measures a driven time of the motor 41, and a shaft position judging part 54 judges whether or not the output shaft of the motor 41 is in a region on the closing position side of the valve exceeding a specified detecting angle range. And a malfunction detecting part 55 detects the maloperation of the valve, on the basis of the value of the current flowing in the motor 41, the driven time of the motor, and the judgment whether or not the output shaft is in a region on the closing position side of the valve exceeding the detecting angle range.

78. 发明专利

JPH11101504A ONE BOILER TWO WATER PASSAGE WATE HEATER 失效
公开(公告)号：JPH11101504A
公开(公告)日：1999-04-13
申请号：JP28142697
申请日：1997-09-29
申请人： GASTAR CORP
发明人： SAITO TOSHIHISA , WATANABE HISAYASU , SATO TETSUYA
IPC分类号： F24H1/00
摘要： PROBLEM TO BE SOLVED: To enable the judgment of abnormalities such as a shortage of the flow of water in a reheating circulating passage during a reheating sole operation in a one boiler two water passage bath water heater. SOLUTION: Burner combustion is started without detecting water flow of the reheating circulating passage when a reheating command is issued, a reheating sole combustion control part 45 stops burner combustion when the hot water temperature detected by a hot water heat exchange hot water temperature sensor if OFF temperature or higher and restarts the burner combustion when the detected temperature is ON temperature or below. A normal pattern of the hot water temperature of hot water heat exchanger in the reheating sole operation is given in advance and when the data of detected hot water temperature by a hot water heat exchange hot water sensor 22 exceeds the predetermined range of tolerance, a reheating sole operation abnormality judging part 49 judges it as an abnormality, issues an abnormality signal and stops the reheating operation forcibly by a reheating forcibly stopping means 48.

79. 发明专利

JPH1183168A COMBUSTOR 失效
公开(公告)号：JPH1183168A
公开(公告)日：1999-03-26
申请号：JP25154597
申请日：1997-09-17
申请人： GASTAR CORP
发明人： WATANABE HISAYASU , SAITO TOSHIHISA , SATO TETSUYA
IPC分类号： F24H1/00
摘要： PROBLEM TO BE SOLVED: To control the hot water supply temperature stably by determining the quantity of heat to be supplied to a heat exchanger based on the proportional/integrating/differentiating constants corresponding to the heat absorbing quantity of water in the additional burning path of a bath at the time of heat exchange when hot water supply and additional burning of a bath are carried out simultaneously. SOLUTION: An additional burning path 20 of a bath on the upstream side of a heat exchanger 1 is provided with a sensor 23 for detecting the water temperature in a bathtub 22. An additional burning path 20 of a bath on the downstream side of the heat exchanger 1 is provided with a sensor 24 for detecting the temperature of hot water being delivered from the heat exchanger 1. Based the temperature and flow rate detected through various sensors and a temperature being set by a remote controller 31, or the like, a control section 30 comprising a microcomputer, or the like, controls a gas proportional valve 6, a circulation pump 21, or the like.

80. 发明专利

JPH1183004A COMBUSTION APPARATUS AND FIRING CONTROL METHOD 失效
公开(公告)号：JPH1183004A
公开(公告)日：1999-03-26
申请号：JP24242797
申请日：1997-09-08
申请人： GASTAR CORP
发明人： SAITO TOSHIHISA
IPC分类号： F23N1/02
摘要： PROBLEM TO BE SOLVED: To provide a combustion apparatus of reducing an ignition sound upon firing in timing not intended by an operator. SOLUTION: A firing condition set section 52 includes as firing modes to fire a burner 12 an ordinary firing mode, and a static sound firing mode where an air fuel ratio is set higher than the ordinary firing mode, and uses the static sound firing mode as the firing mode to fire the burner 12 excepting a case where firing is performed at once in response to operation of an operator. A firing sound is reduced by setting the air fuel ratio higher, and hence a user is prevented from becoming uneasy and uncomfortable even when the firing is performed in timing not intended by the user.

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