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71. 发明专利

JPH08121793A HEAT INSULATION OPERATING METHOD FOR CIRCULATION TYPE WATER HEATER 失效
公开(公告)号：JPH08121793A
公开(公告)日：1996-05-17
申请号：JP26402694
申请日：1994-10-27
申请人： TOKYO GAS CO LTD
发明人： KOSHIMIZU DAISUKE
IPC分类号： F24D17/00
摘要： PURPOSE: To provide the energy saving by optimizing circulating flow rate in the heat insulation operation of a circulation type water heater. CONSTITUTION: A circulation type water heater comprises a hot water supply tube 4 from a hot water supply source equipment 1 to a hot water supply position 2, a hot water return tube 5 continued from the supply tube to return from the position to the equipment, and a circulation pump 6. The pump is so formed as to regulate a circulation flow rate. Water temperature sensors 9a, 9b are installed in a suitable place, of the tube at the downstream side from the connecting position with a cock 3 of the most downstream side of the position, and the pump is so controlled as to maintain the water temperature detected by the sensor at a predetermined value to regulate the circulation flow rate. Thus, the warm water temperature at a faucet (cock) etc. of the farthest position from the equipment can be maintained higher than the lowest limit without failure for the use while always holding the heat insulation operating state at the optimum warm water circulation flow rate despite the length, the bore of the supply tube, the peripheral temperature of the tube, the heat insulation executing state of the tube, and its aging change.

72. 发明专利

JPH0719595A CIRCULATION TYPE WATER HEATING EQUIPMENT 失效
公开(公告)号：JPH0719595A
公开(公告)日：1995-01-20
申请号：JP15853093
申请日：1993-06-29
申请人： TOKYO GAS CO LTD
发明人： KOSHIMIZU DAISUKE
IPC分类号： F24H1/10
摘要： PURPOSE:To prevent occurrence of a so-called sandwich phenomenon of cold water wherein a cold water layer is formed in a hot water supply route, in circulation type water heating equipment which is constructed of a heat source machine provided with a hot water connecting port and a supply water connecting port. CONSTITUTION:In circulation type water heating equipment wherein a hot water route 3 from a heat source machine 1 to a hot water supplying place 2, a hot water return route 4 from the hot water supplying place 2 to the heat source machine 1, a circulation pump 8 and a supply water route 5 to the heat source machine 1 are constructed, the heat source machine 1 is provided with a supply water connecting port 15 on the upstream side of a heat exchanger part 10 and with a hot water connecting port 16 on the downstream side thereof. The supply water route 5 and the hot water return route 4 are joined together and a joined route 18 thus formed is connected to the supply water connecting port 15, while a temperature detector 19 is provided in the vicinity of a joining point 17 on this joined route 18. Based on a detection output of the temperature detector 19, a burning sequence of a burner 9 of the heat source machine 1 is started in this constitution.

73. 发明专利

JPH06272959A CIRCULATION TYPE HOT-WATER APPARATUS 失效
公开(公告)号：JPH06272959A
公开(公告)日：1994-09-27
申请号：JP6355793
申请日：1993-03-23
申请人： TOKYO GAS CO LTD
发明人： KOSHIMIZU DAISUKE
IPC分类号： F24H1/10
摘要： PURPOSE:To prevent a so-called sandwich phenomenon of cold water, wherein a cold water layer is formed in a hot-water feed line, in a circulation type hot-water apparatus. CONSTITUTION:A circulation type hot-water apparatus is provided with a hot-water line 3 from a heat source machine 1 to a hot-water feed point 2, return hot-water line 4 from the point 2 to the machine 1, circulation pump 8, and feed water line 5 leading to the machine 1. In the line 5, there are provided in succession a feed water sensor 12, feed water temperature sensor 11, and tank 16 from the upstream side thereof toward a heat exchange part 10 of the machine 1, and the line 4 is connected to a point between the sensor 12 and the sensor 11 so that a combustion sequence is started based on the sensing of feed water by means of the sensor 12.

74. 发明专利

JPH06229625A CONTROL OF STARTING WARMING OPERATION FOR CIRCULATION TYPE HOT WATER SUPPLIER USING AN INSTANT HEAT SOURCE DEVICE 失效
公开(公告)号：JPH06229625A
公开(公告)日：1994-08-19
申请号：JP1458693
申请日：1993-02-01
申请人： TOKYO GAS CO LTD
发明人： KOSHIMIZU DAISUKE
IPC分类号： F24H1/10
摘要： PURPOSE:To decrease the starting time by a method wherein at a time of start of warming operation, until a hot water temperature in a return flow passage reaches a set value, an operation is carried out with a much larger circulation amount of hot water than that in a normal operation. CONSTITUTION:When an operation switch is turned ON, first a circulation pump 5 is turned ON by a controller to start a circulation of hot water in a flow passage, and then a burner of a heat source device 1 is started to burn through a prescribed sequence. At the time when the operation switch is turned ON, as a solenoid valve 11 in a bypass flow passage 10 which is interposed in a return flow passage 4 is already opened, the circulating water flows into the bypass flow passage 10. As a result, if the solenoid valve 11 is closed, a large amount of circulating water can be obtained. Accordingly, an output per unit time of the heat source device 1 becomes large, and a time required for raising the circulating water temperature, that is, a rising time can be shortened. The solenoid valve 11 is closed at a time when the hot water temperature reaches the set value, and the circulating water flows only through a throttle 6 after that.

75. 发明专利

JPH0439567A CENTRAL TYPE HOT-WATER SUPPLYING DEVICE 失效
公开(公告)号：JPH0439567A
公开(公告)日：1992-02-10
申请号：JP14500790
申请日：1990-06-02
申请人： TOKYO GAS CO LTD , TAKAGI KOGYO KK
发明人： YOSHIDA MASASHI , SUGANO YOSHIHIRO , OTA KIYOSHI , KOSHIMIZU DAISUKE , NISHI TAKAHIRO , TAKAGI TAKAO , MOCHIZUKI KIMIO , SHINOHARA SENZOU , HASHIMOTO KUNINORI , TAKAI HIDETADA
IPC分类号： F24H1/10 , F24D17/00
摘要： PURPOSE:To prevent interruption of hot-water supply by a method wherein the present device is constituted of circulating type pipelines, passing through hot-water supplying places, and a plurality of tap-controlled water heaters. CONSTITUTION:A plurality of tap-controlled water heaters 1a-1c are connected to a hot-water supplying pipeline 12 and a hot-water returning pipeline 13 through hot-water output sides (o) and water input sides (i) by connecting pipes branched from the hot-water supplying pipe 12 and the hot-water returning pipe 13 while a fuel gas supplying pipe 17 is connected to respective water heaters 1a-1c. Water or returning hot-water, branched from the hot-water returning pipe 13 and arriving at respective tap-controlled water heaters 1a-1c through the water input sides (i), is heated by heat exchangers 2 and, thereafter, is joined with the hot-water supplying pipe 12. The joined hot-water flows through the hot-water supplying pipe 12 and arrives at hot-water supplying places 11a-11c, then, the part of it is used. Remaining hot-water returns through the hot-water returning pipe 13 and is joined with fresh water, supplemented in proper places, then, is circulated again through the heat exchangers 2. According to this method, the hot-water can be supplied at any time.

76. 发明专利

JPH02238253A DRAINING MECHANISM FOR HOT WATER STORAGE TANK OF HOT WATER BOILER 失效
公开(公告)号：JPH02238253A
公开(公告)日：1990-09-20
申请号：JP5709089
申请日：1989-03-09
申请人： TOKYO GAS CO LTD , TAKAGI KOGYO KK
发明人： SUGANO YOSHIHIRO , KOSHIMIZU DAISUKE , SHIMIZU MICHIHIRO , SUZUKI KENJI
IPC分类号： F24H9/00 , F24D17/00
摘要： PURPOSE:To simultaneously discharge precipitate such as dusts stored in the bottom of a hot water storage tank in draining by providing the drain port of a boiler lower than the drain port of the tank, connecting one end of a second drain tube inside the drain port of the tank, and providing the other end near the bottom of the tank as an open end. CONSTITUTION:Since a drain port 5 of a hot water boiler 4 is connected to the interior of its hot water storage tank 3 through first and second drain tubes 6, 7, hot water 9 stored in the tank 3 can be all drained externally from the port 5 at a position higher than the port 5 if the port 5 is opened. Further, when the open end 8 of the tube 7 is provided at a position lower than a drain port 2 by providing the port 5 of the boiler 4 lower than the port 2 of the tank 3, hot water 9 in a lower part than the port 2 can be drained. Since the end 8 of the tube 7 is disposed near the bottom of the tank 3, hot water 9 in the tank 3 can be substantially completely drained if the port 5 of the boiler 4 is disposed lower than the bottom of the tank 3.

77. 发明专利

JPH02238224A HOT WATER STABLE FEED DEVICE IN BOILER 失效
公开(公告)号：JPH02238224A
公开(公告)日：1990-09-20
申请号：JP5709289
申请日：1989-03-09
申请人： TOKYO GAS CO LTD , TAKAGI KOGYO KK
发明人： SUGANO YOSHIHIRO , KOSHIMIZU DAISUKE , SHIMIZU MICHIHIRO , SUZUKI KENJI
IPC分类号： F24D17/00
摘要： PURPOSE:To always feed a specified quantity of hot water regardless of the number of use of a hot water feed plug by providing a pressure detection part at the discharge side of a hot water pump, a plurality of hot water feed plugs at the downstream side of the pressure detection part and a flow control means receiving a signal of the pressure detection part the downstream side of the hot water feed plugs for its operation. CONSTITUTION:A hot water feed pump 3 is operated to circulate hot water in a hot water circuit 2, where not water feed can be performed by opening hot water feed plugs 3. At this time, since a pressure detection part 4 detects a pressure which is higher than a set pressure, the signal is transmitted to a flow control means 6 such as a solenoid valve to enlarge a circulation flow. As the result, the pressure of the upstream side of the flow control means 6 lowers and a proper quantity of the hot water can be fed from opened hot water feed plug 5. In addition, for instance, in the case where the four hot water feed plugs 5 are opened wholly, the pressure detection part 4 attains a pressure lower than a set pressure to transmit the signal to the flow control means 6 so as to stop or limit the circulation of the hot water. As the result, a quantity of hot water feed from each hot water feed plug 5 increases.

78. 发明专利

JPS62233639A FLUID HEATING APPARATUS 失效
公开(公告)号：JPS62233639A
公开(公告)日：1987-10-14
申请号：JP7529086
申请日：1986-04-01
申请人： ASAHI GLASS CO LTD , TOKYO GAS CO LTD
发明人： ODA NORIYUKI , TAKEHARA TETSUO , MORITA SUSUMU , SHIYUDOU TAKATOSHI , SAKURAI KOZO , SUGANO YOSHIHIRO , KOSHIMIZU DAISUKE
IPC分类号： F23D14/14 , F24H1/14
摘要： PURPOSE:To prevent a surface-combustion burner from being damaged by overheating by radiant heat, and to prevent mixed gas from causing back fire by heating, by providing a surface-combustion burner in the flow path of mixed gas which consists of combustion gas and air, and by providing heat transfer pipes not only on the downstream side of a surface-combustion burner but also on the upstream side of it. CONSTITUTION:A mixed gas inlet opening 13 is provided on the casing 12 of a fluid heating apparatus 11 in order to feed mixed gas of combustion gas and air into the casing. Above the inlet opening 13, a surface-combustion burner 16 consisting of a ceramic honeycomb body is provided. The mixed gas intro duced from the inlet opening 13 is burned on the surface-combustion burner 16, heating the purity and the secondary heat transfer pipes 19 and 20 provided on the upstream side and the downstream side of a burner 16. The heat transfer pipes 19 on the upstream side are heated by the surface-combustion burner 16 and also by radiant heat from flames 18. They prevent the surface-combustion burner from being overheated, and also prevent the mixed gas from causing back fire.

79. 发明专利

JP2003185388A LATENT HEAT RECOVERY HEAT EXCHANGER 审中-公开
公开(公告)号：JP2003185388A
公开(公告)日：2003-07-03
申请号：JP2001379355
申请日：2001-12-12
申请人： TOKYO GAS CO LTD
发明人： SHINTANI YOSHIHIRO , KOMUKAI SHIGERU , KOSHIMIZU DAISUKE , AMO SHINJI
IPC分类号： F24H1/14 , F24H9/00 , F28F1/32 , F28F19/00 , F28F19/02 , F28F21/08
摘要： PROBLEM TO BE SOLVED: To obtain a copper-made latent heat recovery heat exchanger which prevents corrosion of copper-made water tubes from occurring and advancing for a long time, and to obtain a water heater using this heat exchanger. SOLUTION: The latent heat recovery heat exchanger is constituted of water tubes with fins, and the both the water tubes and the fins are made of copper material, and the thickness of these fins is increased so that it will work as a sacrificial anode. This latent heat recovery heat exchanger is applied to a heat recovery system, such as a water heater and a boiler, which is equipped with a sensible heat recovery heat exchanger and the latent heat recovery heat exchanger. COPYRIGHT: (C)2003,JPO

80. 发明专利

JP2002349844A EXHAUST HOOD PART FOR WATER HEATER 失效
公开(公告)号：JP2002349844A
公开(公告)日：2002-12-04
申请号：JP2001156751
申请日：2001-05-25
申请人： TOKYO GAS CO LTD , TAKAGI KOGYO KK
发明人： KOSHIMIZU DAISUKE , OUCHI KENJIRO , AMO SHINJI
IPC分类号： F23L17/04 , F23L17/02 , F23L17/12
摘要： PROBLEM TO BE SOLVED: To provide an exhaust hood part with which an exhaust flue of a semi-closed burner, such as a water heater, can be directly connected, in a short time, to an existing duct as well as a newly established duct with a simple connecting method, and which exerts good dilution with a small capacity, reduces loading of air resistance on an exhaust fan, can be applied to exhaust flue type combustors, and has a compact shape which barely restricts the type of ducts to be employed. SOLUTION: The exhaust hood part for an exhaust flue of a combustor comprises; an outer cylinder for the hood part, which is disposed coaxial with the exhaust flue of a combustor at an upper and outer side thereof with an air channel interposed therebetween; and an exhaust flow control plate having a convex surface which is disposed coaxial with the outer cylinder for the hood part at an upper and inner side thereof with an exhaust outlet interposed therebetween.

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