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21. 发明专利

JPH1026413A HOT WATER FEEDING DEVICE 失效
公开(公告)号：JPH1026413A
公开(公告)日：1998-01-27
申请号：JP17884896
申请日：1996-07-09
申请人： HARMAN CO LTD
发明人： SHIROKURA TOSHIYA , FUJITA YOSHIHISA , FUJIKAWA HIDEAKI
IPC分类号： F24H1/10
摘要： PROBLEM TO BE SOLVED: To provide a hot water feeding device capable of effectually preventing freezing of water at a water supply passage part without causing complicated construction with use of a rational construction by effectually utilizing a member for manifesting an inherent hot water supply function. SOLUTION: The present hot water heater includes a water heating heat exchanger for heating water supplied through an entrance water passage 5 with combustion of a burner 3 and supplying hot water to an effluent hot water passage, and a control part H for executing ordinary combustion control where the combustion of the burner 3 is started as water supply to the heat exchanger 2 is started, and the combustion of the combustion of the burner 3 is interrupted as the water supply is interrupted. In this case, the control part H is adapted to execute freezing prevention combustion control where the combustion of the burner 3 is started as set conditions for starting freezing prevention operation are satisfied while the combustion of the burner 3 is interrupted as set conditions for interrupting freezing prevention operation are satisfied.

22. 发明专利

JPH109672A WATER HEATER 失效
公开(公告)号：JPH109672A
公开(公告)日：1998-01-16
申请号：JP16409896
申请日：1996-06-25
申请人： HARMAN CO LTD
发明人： SHIROKURA TOSHIYA , FUJITA YOSHIHISA , FUJIKAWA HIDEAKI
IPC分类号： F24H1/10
摘要： PROBLEM TO BE SOLVED: To provide a water heater for supplying hot water of a temperature near a desired temperature as early as possible in starting hot water supply without complicating a constitution. SOLUTION: The water heater comprises a water heating heat exchanger 2 for heating water supplied via an input water passage 5 by means of combustion of a burner 3 to output hot water from a hot water output passage 6, and a controller H for starting the combustion of the burner 3 as water flow to a heat exchanger 2 is started and stopping the combustion of the burner 3 as the water flowing is stopped. In this case, the controller H executes a temperature keeping combustion control for starting the combustion of the burner 3 if setting conditions for starting temperature keeping combustion are satisfied in the state that the water flow to the exchanger 2 is stopped and stopping the combustion of the burner 3 if the conditions for stopping the temperature keeping combustion are satisfied.

23. 发明专利

JPH0989372A HOT WATER HEATER 失效
公开(公告)号：JPH0989372A
公开(公告)日：1997-04-04
申请号：JP25221495
申请日：1995-09-29
申请人： HARMAN CO LTD
发明人： MAEDA YASUSHI , FUJIKAWA HIDEAKI
IPC分类号： F24H1/00
摘要： PROBLEM TO BE SOLVED: To lower the temperature of hot water in a general hot water supply path accurately by keeping a high temperature hot water supply valve opened by a hot water supply control means until the temperature of hot water in the general hot water supply path heated to a high temperature lowers because of the inflow of high temperature hot water from a hot water supply path when interruption is made for general hot water supply. SOLUTION: When a hot water supply plug 11 is opened during a additional boiling mode, an interruption for general hot water supply is executed based on the detection of an interrupt sensor 16. In the interruption for the general hot water supply, a hot water supply control means H computes a necessary amount of a gas from the temperature set by a temperature setting switch 33 of a main remote control Ra based on the amount of water detected by a water quantity sensor 5 and the temperature of water detected by a water supply thermistor 6 to adjust the opening or the like of an electromagnetic proportional valve 26. At the same time, the opening of an additional boiling valve 22 is adjusted based on the detected temperature of water fed of the water supply thermistor 6. This lowers the temperature of hot water in the general hot water supply path more accurately and quickly thereby reducing the possibility of discharging high temperature hot water from the hot water supply plug.

24. 发明专利

JP2001004217A TEMPERATURE DETECTION TYPE CONTROL DEVICE 失效
公开(公告)号：JP2001004217A
公开(公告)日：2001-01-12
申请号：JP17830199
申请日：1999-06-24
申请人： HARMAN CO LTD
发明人： SHIROKURA TOSHIYA , FUJIKAWA HIDEAKI , ISHIKAWA YOSHIKATSU
IPC分类号： F24H1/10
摘要： PROBLEM TO BE SOLVED: To execute operation always in a proper state even when a temperature detecting means is connected in any state, in a control device constituted such that a temperature detecting means is connected by a plurality of connection means. SOLUTION: In this control device, a plurality of temperature detecting means 14, 15, and 16 disposed in a plurality of respective spots to be measured and detecting temperature with respective different temperature ranges in a operation state forming an object are interconnected through respective connectors CN and a control part H is provided to control operation based on respective detecting information. The control part H is constituted to execute discrimination processing to discriminate it based on detecting information of each temperature detecting means in an operation state that the temperature detecting means is disposed in any of a plurality of spots to be measured.

25. 发明专利

JP2000314505A COMBUSTION APPARATUS 失效
公开(公告)号：JP2000314505A
公开(公告)日：2000-11-14
申请号：JP12177399
申请日：1999-04-28
申请人： HARMAN CO LTD
发明人： SHIROKURA TOSHIYA , FUJIKAWA HIDEAKI , ISHIKAWA YOSHIKATSU
IPC分类号： F23N5/00 , F23C1/00
摘要： PROBLEM TO BE SOLVED: To provide a combustion apparatus which enables accurate setting of various information such as the type of gas, while achieving lower cost. SOLUTION: This combustion apparatus is provided with a control means H to control operation based on information for combustion control. In this case, a memory position switching means 22 is arranged to perform a switching to multiple memory positions. In each of the multiple memory positions, a plurality of setting switches 23 for setting binary information are installed. As each of the multiple memory positions, memory means 102 are provided to store the memory position by the memory position switching means 22 and the binary information with the plurality of setting switches 23 as set information in plurality, and the control means H obtains information for combustion control from the set information stored in the memory means 102 to control operation.

26. 发明专利

JP2000018715A HOT WATER SUPPLIER 失效
公开(公告)号：JP2000018715A
公开(公告)日：2000-01-18
申请号：JP17874198
申请日：1998-06-25
申请人： HARMAN CO LTD
发明人： FUJIKAWA HIDEAKI , SHIROKURA TOSHIYA , FUJITA YOSHIHISA
IPC分类号： F24H1/10
摘要： PROBLEM TO BE SOLVED: To get enough heat retention effect while preventing the excessive pressure rise within a hot water delivery path or a heat exchanger to the utmost. SOLUTION: This hot water supplier is constituted so that a control means H for controlling the combustion of a burner 3 may usually execute combustion control in the condition of water passage to a heat exchanger 2 and that it may execute heat retention combustion control in the condition of stoppage of water passage to the heat exchanger 2, and this is provided with a manual operation system of temperature setting means 24 intended for objective temperature for hot water delivery for setting the temperature rise width based on the objective temperature for hot water delivery so as to set the objective temperature for heat retention in heat retention combustion control, and this is constituted so that the control means H may execute the warmth keeping combustion control, setting the temperature where temperature rise width being set by the temperature setting means 24 intended for the objective temperature for hot water delivery is added to the objective temperature for hot water delivery as the objective temperature for heat retention intended for the objective temperature for hot water delivery.

27. 发明专利

JPH11337171A HOT WATER SUPPLIER 失效
公开(公告)号：JPH11337171A
公开(公告)日：1999-12-10
申请号：JP14932398
申请日：1998-05-29
申请人： HARMAN CO LTD
发明人： FUJIKAWA HIDEAKI , SHIROKURA TOSHIYA , FUJITA YOSHIHISA
IPC分类号： F24H1/10
摘要： PROBLEM TO BE SOLVED: To let out hot water having a temperature as near to a desired temperature as possible from the start of hot water delivery. SOLUTION: This device is provided with a bypass path 21 which connects a water entry path 5 with a hot water supply path 6 in condition that it bypasses a heat exchanger 2 for water heating and mixes the water from the water entry path 5 into the hot water from the hot water supply path and lets it out from a hot water delivery path 7, and a control means H which controls a burner 3, and the control means H usually executes combustion control in condition that water is passed to the heat exchanger 2, and also executes the warmth keeping combustion control to maintain the temperature of the hot water within the heat exchanger 2, at an objective temperature for keeping warmth, by combusting the burner 3, in condition that the water supply to the heat exchanger 2 is stopping. In this case, this is provided with an incoming water temperature detection means 9 to detect the temperature of the water supplied through a water entry path 5, and the control means H changes the objective temperature for keeping warmth so as to lower the objective temperature for keeping warmth more in the case where the detected temperature of incoming water is high than in the case where the detected temperature of incoming water is low.

28. 发明专利

JPH11142194A FLUID DETECTING DEVICE AD HOT-WATER SUPPLY APPARATUS 失效
公开(公告)号：JPH11142194A
公开(公告)日：1999-05-28
申请号：JP31024397
申请日：1997-11-12
申请人： HARMAN CO LTD
发明人： TOMIO TAKESHI , FUJIKAWA HIDEAKI , SHIROKURA TOSHIYA
IPC分类号： G01F1/00 , F24H1/10
摘要： PROBLEM TO BE SOLVED: To obtain a fluid detecting device by which flow amount of a fluid can be detected with good accuracy, by a method wherein, whether the mechanical flow-rate detection means is in an abnormal operating state or based or not is discriminated the deviation between a detection flow rate by mechanical flow-rate detection means and that by an electrical flow-rate detection means. SOLUTION: In a water passage amount sensor 7, a rotating blade is turned by a flow in a water introduction conduit 5, a pulse signal from a Hall element according to its speed of rotation is counted, and a water passage amount is detected. A control part H electrifies an introduced water temperature thermistor 8 so as to be self-heated, and an ambient temperature is detected on the basis of its temperature change. It stops the supply of electric power after the introduced water temperature thrmistor 8 is raised up to a set temperature, and an electrical flow-rate detection means Hb discriminates a flow rate on the basis of a temperature change due to the elapse of its time. When the absolute value of the deviation between its value the detection flow rate of the water flow passage amount sensor 7 is less than a set value, the operation of the water passage amount sensor 7 is judged to be normal, and its detection value is used. When the absolute value is at the set value or higher, the water passage amount sensor 7 is judged to be abnormal, a warning lamp 18 is operated, and an alternative burning control operation is executed by the detection value of the electrical flow-rate detection means Hb.

29. 发明专利

JPH1183186A HOT WATER SUPPLY UNIT 失效
公开(公告)号：JPH1183186A
公开(公告)日：1999-03-26
申请号：JP23443397
申请日：1997-08-29
申请人： HARMAN CO LTD
发明人： FUJIKAWA HIDEAKI , SHIROKURA TOSHIYA , FUJITA YOSHIHISA , YAGI MASAHIKO
IPC分类号： F24H1/10
摘要： PROBLEM TO BE SOLVED: To supply hot water having temperature close to a desired level at the time of redelivery by providing a check operation means for bringing a combustion state switching means into noncombustion state regardless of a combustion state command being delivered from a combustion control means to the combustion state switching means thereby combusting a burner for the purpose of retaining warmth the hot water in a heat exchanger. SOLUTION: The hot water supply unit is constituted such that a first transistor T1 is turned on by inputting a pseudo signal corresponding to a water conduction signal directly to a transistor drive circuit C2 when set conditions for starting warmth retaining combustion are satisfied. The conduction signal output line from a water, quantity detection circuit C1 and the pseudo signal output line from a microcomputer M are connected with an OR having an output line connected with the transistor drive circuit C2 being provided with the water conduction signal. The check switch T6 of a check operation means may be inserted into the pseudo signal output line from the microcomputer M.

30. 发明专利

JPH1137556A HOT-WATER SUPPLY 失效
公开(公告)号：JPH1137556A
公开(公告)日：1999-02-12
申请号：JP19245697
申请日：1997-07-17
申请人： HARMAN CO LTD
发明人： FUJIKAWA HIDEAKI , FUJITA YOSHIHISA , SHIROKURA TOSHIYA
IPC分类号： F24H1/10
摘要： PROBLEM TO BE SOLVED: To provide a hot-water supply which enables the supply of hot water of near the desired temperature as fast as possible at the start of the hot-water supply and the rise of the internal pressure of the heat exchanger can be avoided with the hot-water supply heated by the combustion with a burner. SOLUTION: In a hot-water supply provided with a water heating heat exchanger 2 heating water supplied through water inlet duct 5 by the combustion at the burner 3 and outputs it through a hot-water outlet duct 6, a controlling means H executing a normal combustion control by starting the combustion at a burner 3 along with the start of the water supply to the heat exchanger 2 and stopping the combustion at the burner 3 along with the stopping of the water supply to it, the controlling means H starts the combustion at the burner 3 when the setting condition of the starting thermally insulating combustion is satisfied and executes the control of the thermally insulating combustion combusting intermittently at the burner 3 by the time setting condition for stopping the thermally insulating combustion is satisfied at the state of water flow to the heat exchanger 2 is stopped.

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