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31. 发明专利

JPH10122659A HOT WATER SUPPLY APPARATUS 失效
公开(公告)号：JPH10122659A
公开(公告)日：1998-05-15
申请号：JP27313896
申请日：1996-10-16
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 eliminate the fear of a heat exchanger being damaged owing to no-water boiling in temperature insulation heating by allowing heat insulation heating combustion only when it is shown that a judgment result of gas/liquid judgment means is in a heat exchanger. SOLUTION: Ordinary combustion control means 100 executes ordinary combustion control in which combustion of a burner 3 is started or interrupted when water supply to a heat exchanger 2 is started or interrupted, and the amount of combustion of the burner 3 is adjusted such that hot water supply temperature reaches a target temperature when water supply is detected. Heat insulation combustion control means 101 enters a gas/liquid-judgment mode to judge the existence of hot water in the heat exchanger 2 when the insulation combustion is required even in the state where water supply to the heat exchanger 2 is interrupted. If it is indicated that hot water exists, then combustion of the burner 3 is started. In the gas/liquid judgment mode, there is employed as gas/liquid-judgment means a temperature detecting device provided on a hot water passage from a water entrance passage 5 to a hot water exit passage 6 or in the vicinity of the heat exchanger 2.

32. 发明专利

JPH10121526A ANTIFREEZING DEVICE OF WATER SUPPLY SYSTEM 失效
公开(公告)号：JPH10121526A
公开(公告)日：1998-05-12
申请号：JP28195396
申请日：1996-10-24
申请人： HARMAN CO LTD
发明人： SHIROKURA TOSHIYA , FUJIKAWA HIDEAKI
IPC分类号： E03B7/10 , F24H1/10
摘要： PROBLEM TO BE SOLVED: To prevent useless consumption of water, by providing a judging means to judge the necessity to feed antifreezing water and an actuation means moving on the basis of the judgment. SOLUTION: In order to prevent a water supply passage 2 like a hot water supplier 3 from freezing, a faucet 1 is opened to allow the water to flow through the water supply passage 2. In this time, the water temperature in the water supply passage is detected by a water temperature detection means like a hot water temperature sensor 13 or the like in the judging means 30. When the detected temperature is lower than a preset temperature, it is judged that it is necessary to allow water to flow and when the detected temperature is higher than the preset temperature, it is judged that it is not necessary to allow water to flow. When the means 30 judges that water is not necessary, a closing valve controller 36 closes the valve 34 and when the means 30 judges that water feed is necessary, an opening valve controller 37 opens the valve 34. Then, when the means judges that it is necessary to feed water, a controller 38 for water-feed necessity information lights a freeze caution lamp 35 and when the means judges that it is unnecessary to feed water, a controller 39 for water-feed unnecessariness information extinguishes the freeze caution lamp 35. In this way, the water can be securely prevented from flowing when the antifreeze means is not required.

33. 发明专利

JP2001311550A BATH HOT WATER SUPPLYING DEVICE 失效
公开(公告)号：JP2001311550A
公开(公告)日：2001-11-09
申请号：JP2000129301
申请日：2000-04-28
申请人： HARMAN CO LTD
发明人： AOKI KENJI , FUJIKAWA HIDEAKI
IPC分类号： F23N1/08 , F24H1/00 , F24H1/10
摘要： PROBLEM TO BE SOLVED: To provide a convenient bath hot water supplying device that is capable of securing the sufficient hot water supply quantity to be actually supplied and performing hot water supply and filling a bathtub with hot water at the same time. SOLUTION: A bath hot water supplying device is provided with a bathtub filling channel 20 branched to be connected with a hot water supplying channel 2 and supplying hot water heated by a burner 4 into the bathtub 15, a bathtub filling on-off valve 21 provided in the bathtub filling channel 20 to perform and stop supply of the hot water into the bathtub 15, a hot water supply quantity detecting means 13 detecting the hot water supply quantity to be supplied through a downstream side channel part 2b located downstream of the point where the bathtub filling channel 20 is connected in the hot water supplying channel 2. A controlling means H controls in such a manner that he bathtub filling on-off valve 21 is opened in the case the hot water supply quantity to be supplied through the downstream side channel part 2b is under a minimum hot water supply quantity on the basis of the detected information of the hot water supply quantity detecting means 13 during a bathtub filling combustion control process and the bathtub filling on-off valve 21 is kept closed in the base when the hot water supply quantity is the minimum hot water supply quantity or more.

34. 发明专利

JP2000018717A HOT WATER SUPPLIER 失效
公开(公告)号：JP2000018717A
公开(公告)日：2000-01-18
申请号：JP18237998
申请日：1998-06-29
申请人： HARMAN CO LTD
发明人： SHIROKURA TOSHIYA , FUJIKAWA HIDEAKI
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 water delivery path. SOLUTION: This is a hot water supplier which is constituted so that the control means H for controlling the combustion of a burner 3 may usually execute the combustion control to control the combustion of the burner so that the temperature of the hot water delivered from a hot water delivery path 7 may be the objective temperature for hot water delivery in the condition of water passage to a heat exchanger 2 and that it may execute the heat retention combustion control to control the combustion of the burner 3 so that the temperature of the hot water within the hot water delivery path 7 or the heat exchanger 2 may be the objective temperature for heat retention in the condition of stoppage of water passage to the heat exchanger 2, and this is provided with pressure detection means 24 and 25 for detecting the pressure within the water passage pipe leading to the hot water delivery path 7 from a water entry path 5, and this is constituted so that the control means H may stop the combustion of the burner 3 in heat retention combustion control when the detected pressure by the pressure detection means 24 and 25 reaches the set pressure in execution of the heat retention combustion control.

35. 发明专利

JPH11337172A HOT WATER SUPPLY EQUIPMENT 失效
公开(公告)号：JPH11337172A
公开(公告)日：1999-12-10
申请号：JP14932498
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 deliver hot water close to target temperature from the first by controlling combustion of a burner while setting a heat insulation target temperature based on a hot water delivery target temperature immediately before interruption of water supply to a heat exchanger thereby suppressing pressure rise in the hot water delivery channel or the heat exchanger as much as possible. SOLUTION: A hot water supply section K comprises a heat exchanger 2 and a gas burner 3 for heating water disposed in a combustion chamber 1 and a remote control operating section R is provided with a switch 17 for setting a hot water delivery target temperature, and the like. A control section H comprises a normal combustion control means 100 comprising a microcomputer, a heat insulating combustion control means 101, and means 102 for setting/altering a heat insulation target temperature. The setting means 102 sets a heat insulation target temperature based on a set hot water delivery target temperature. When the hot water delivery target temperature is altered when water supply is interrupted, temperatures before and after alteration are compared and a lower temperature is selected as a set temperature. More specifically, a heat insulation target temperature is set based on the hot water delivery target temperature immediately before interruption of water supply.

36. 发明专利

JPH1183187A HOT WATER SUPPLY UNIT 失效
公开(公告)号：JPH1183187A
公开(公告)日：1999-03-26
申请号：JP23443497
申请日：1997-08-29
申请人： HARMAN CO LTD
发明人： FUJIKAWA HIDEAKI , SHIROKURA TOSHIYA , FUJITA YOSHIHISA , YAGI MASAHIKO , FUJIMOTO YOSHIO
IPC分类号： F24H1/10
摘要： PROBLEM TO BE SOLVED: To combust a burner for the purpose of retaining warmth of hot water even upon interruption of water supply to a heat exchanger by providing a turner check operation for bringing a combustion state switching means into noncombustion state regardless of a combustion state command of the combustion state switching means when a set time is reached after starting warmth retaining combustion control. SOLUTION: Execution of warmth retaining combustion control is stopped by blocking provision of a pseudo signal from an AND circuit A to a transistor drive circuit C2 thereby blocking turn on of a first transistor T1 or turning off the first transistor T1, a second transistor T2, or the like, and disabling a relay D1 for actuating a safety valve. When the detection value of a hot water temperature thermistor 21 for warmth retaining check exceeds a set upper limit, a temperature check operation means KS2 turns off a check switch T6 by delivering an operation signal from a temperature decision circuit C3 even if a pseudo signal is outputted from a microcomputer M and checks input of the pseudo signal to the transistor drive circuit C2.

37. 发明专利

JPH10318607A HOT WATER SUPPLY UNIT 失效
公开(公告)号：JPH10318607A
公开(公告)日：1998-12-04
申请号：JP12837797
申请日：1997-05-19
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 provide a hot water supply unit which can supply hot water at a temperature close to a desired temperature as quickly as possible at the time of starting hot water supply without complicating the structure. SOLUTION: In a hot water unit where water being supplied through a water inlet channel 5 is heated by a heat-exchanger 2 and hot water is delivered from a hot water outlet channel 6, normal combustion control is executed such that combustion of a burner 3 is started when water supply to the heat- exchanger 2 is started and stopped when water supply to the heat-exchanger 2 is stopped. If set conditions for starting heat insulating combustion are satisfied when water supply to the heat-exchanger 2 is stopped, a target integrated amount of input to the burner 3 required for heat insulating combustion is operated and combustion of the burner 3 is started. Furthermore, the amount of input amount incident to combustion of the burner 3 is integrated and when it drops by a specified amount or more below the target integrated amount of input, combustion of the burner 3 is stopped under heat insulating combustion control.

38. 发明专利

JPH10227526A HOT WATER FEEDING DEVICE WITH ANTI-FREEZING FUNCTION 失效
公开(公告)号：JPH10227526A
公开(公告)日：1998-08-25
申请号：JP2997397
申请日：1997-02-14
申请人： HARMAN CO LTD
发明人： FUJITA YOSHIHISA , FUJIKAWA HIDEAKI , SHIROKURA TOSHIYA
IPC分类号： F24H1/10
摘要： PROBLEM TO BE SOLVED: To provide a hot water feeding device having an anti-freezing function capable of performing a positive and efficient anti-freezing operation for an entire hot water feeding device. SOLUTION: This hot water feeding device having an anti-freezing function comprises a heat exchanging section 3 for heating water from a water supplying passage 1 by a heat exchanger 3a and supplying the water to a hot water feeding passage 2; a combustion heating section 4 composed of a burner 4a for heating the heat exchanger 3a; and a combustion control means 7 for sensing a water feeding state in a water feeding pipe 11 extending from the water supplying passage 1 to the hot water feeding passage 2, performing a normal combustion at the burner 4a under a state of feeding water and for performing prevention of freezing and performing combustion at the burner 4 if it satisfies the predetermined condition of anti-freezing and combustion even if the water feeding operation is stopped. The water feeding pipe 11 is divided into an upper pipe 12 including the heat exchanging section 3 and a lower pipe passage 13 other than the upper one. The lower pipe 13 is provided with a lower pipe heating means 15. There is provided a pipe heating control means 16 for performing a control operation if an anti-freezing combustion starting condition is satisfied under a condition of stopped feeding of water, heating of the lower pipe heating means 15 is started and in turn, if it satisfies a condition of stopping an anti-freezing combustion, it is controlled to be stopped.

39. 发明专利

JPH10213346A HOT WATER SUPPLY DEVICE WITH FREEZING PREVENTIVE FUNCTION 失效
公开(公告)号：JPH10213346A
公开(公告)日：1998-08-11
申请号：JP1509197
申请日：1997-01-29
申请人： HARMAN CO LTD
发明人： SHIROKURA TOSHIYA , FUJIKAWA HIDEAKI , FUJITA YOSHIHISA
IPC分类号： F24H1/00
摘要： PROBLEM TO BE SOLVED: To provide a hot water supply device which can protect equipment from damages produced by frozen residual water in a distribution pipeline even when it is subjected to a drop in an outside temperature and contrive to enhance power saving as well. SOLUTION: This hot water supply device comprises a heat exchanger 3, which heats water from a water supply pipeline 1 with a heat exchanger 3a and supplies the hot water to a hot water supply pipeline 2, a combustion heater 4 which heats the heat exchanger 3a, a temperature sensor 9a, which detects a freezing alarm status that the water temperature in a water distribution pipeline or an open air temperature drops to a specified temperature value and below and freezing preventive heating means 12, which prevents the freezing of the residual water in the distribution pipeline 11 by heating a specified location of the distribution pipeline 11 when the temperature sensor 9a detects the freezing alarm status and a vapor-liquid determination means 14 which detects the presence of the residual water in the water distribution pipeline 11. In this case, even when the vapor-liquid determination means 14 which detects the presence of the residual water in the water distribution pipeline 11 and the temperature sensor 9a detect the freezing alarm state, if the vapor-liquid determination means 14 determines that there is no residual water in the water distribution pipeline 11, there is provided a freezing preventive function inhibition means 15 which makes inoperative a freezing preventive heating means 12.

40. 发明专利

JPH10103774A HOT WATER SUPPLY DEVICE 失效
公开(公告)号：JPH10103774A
公开(公告)日：1998-04-21
申请号：JP25885096
申请日：1996-09-30
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 make it possible to supply hot water which is near to a desired temperature without further complicating the constitution of a hot water device as soon as possible when starting the supply of hot water and operate economically the hot water supply device. SOLUTION: In a state where the supply of water to a heat exchanger 2 is suspended, there is provided a heat insulation combustion control means 101 which starts the combustion of a burner 3 when the temperature of hot water in the heat exchanger 2 drops below a first setting temperature and stops the combustion of the burner 3 when the temperature of hot water in the heat exchanger 2 exceeds a second setting temperature; there is also provided a heat insulation combustion control stop means 102 which stops the heat insulation combustion control when the differential temperature between hot water temperature in a hot water supply line 6 and water supply temperature in a water supply line 5 drops below a specified differential value.

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