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61. 发明专利

JPH09152226A GAS COOLING AND HEATING APPARATUS 失效
公开(公告)号：JPH09152226A
公开(公告)日：1997-06-10
申请号：JP31025795
申请日：1995-11-29
申请人： TOKYO GAS CO LTD
发明人： OKA MASAHIRO , NAKAMURA MAKOTO
IPC分类号： F25B29/00
摘要： PROBLEM TO BE SOLVED: To simply conduct the piping work by providing a cooling and heating switching valve for switching to connect a warm water unit or absorption refrigerator to a cooling and heating indoor unit in a gas cooling and heating apparatus having a heat source machine having the unit and refrigerator with gas as fuel. SOLUTION: This gas cooling and heating apparatus comprises a heat source machine 1 having a warm water unit 2, warm water fired absorption refrigerator 3 and cooling and heating switching valve 4, wherein the machine 1 is connected to a cooling and heating indoor unit via a chilled or warm water tube 5. The valve 4 is connected to the controller of the indoor unit via an electric circuit 6. A chilled water tube 13 is connected to the inlet 4a of the valve 4, and the inlet 4b of the valve 4 is connected to a warm water tube 55. At the time of heating, the valve 4 is switched to the position where the warm water from the unit 2 flows to the tube 5, while at the time of cooling, the valve 4 is switched to the position where the chilled water from the refrigerator 3 flows to the tube 5.

62. 发明专利

JPH08189720A ABSORPTION WATER COOLER-HEATER AND OPERATING METHOD THEREOF 失效
公开(公告)号：JPH08189720A
公开(公告)日：1996-07-23
申请号：JP187795
申请日：1995-01-10
申请人： TOKYO GAS CO LTD
发明人： KOJIMA HIROSHI , NAKAMURA MAKOTO , EDERA MASARU , OKA MASAHIRO
IPC分类号： F25B15/00
摘要： PURPOSE: To permit the sufficient utilization of waste heat by a method wherein the waste heat is supplied selectively through a waste heat charging pipeline branched from a hot-water supplying pipe communicated with a waste heat source, in the operating method of an absorption water cooler-heater, in which an opening and closing valve interposed in the pipeline system of the absorption water cooler-heater is opened and closed in accordance with the operation mode of the machine. CONSTITUTION: An operation mode deciding means 52, deciding whether an absorption water cooler-heater 70 is under heating operation or cooling operation, is provided to transmit the result of decision as an output signal to a control means 54 through a signal transmission line SL1. Upon heating operation mode, a control wherein the waste heat is thrown into both of a heat exchanger 32 in the absorption water cooler- heater and another heat exchanger 56 at the inlet port side 6I of a cold and hot water line and another control wherein the waste heat is charged into only the heat exchanger 56 at the inlet port side 6I of the cold and hot water line can be selected. On the contrary, the operation is controlled so that the waste heat is charged into both of the heat exchangers 32, 56 at all times under heating operation.

63. 发明专利

JPH08152223A ABSORPTION WATER COOLING-HEATING MACHINE AND CONTROLLING METHOD OF OPERATION THEREOF 失效
公开(公告)号：JPH08152223A
公开(公告)日：1996-06-11
申请号：JP29178894
申请日：1994-11-25
申请人： TOKYO GAS CO LTD
发明人： KOJIMA HIROSHI , NAKAMURA MAKOTO , EDERA MASARU , OKA MASAHIRO
IPC分类号： F25B15/00
摘要： PURPOSE: To minimize the consumption of high-quality fuel in either an exhaust heat charging operation mode or an ordinary operation mode by judging whether an operation mode is the ordinary operation mode or the exhaust heat charging operation mode and also by conducting an operation control so that the consumption of the high-quality fuel be minimized in either operation mode. CONSTITUTION: At the time when an absorption water cooling-heating machine 20 operates, a control device 48 receives a prescribed signal, e.g. a signal of the opening of a three-way valve V1, and judges whether or not an operation mode is an exhaust heat charging operation mode, on the basis of the signal of the opening of the three- way valve V1. When the result of judgement is YES, that is, when the operation mode is judged to be the exhaust heat charging operation mode, the control device conducts a control of a solution circulation amount in the exhaust heat charging operation mode so that the consumption of high-quality fuel be minimized, for a regulating valve 31 and a solution pump P10. In the case when the result of judgement is NO, that is, when the operation mode is judged to be an ordinary operation mode, on the other hand, it conducts a control of the solution circulation amount in the ordinary operation mode so that the consumption of the high-quality fuel be minimized.

64. 发明专利

JPH08152222A ABSORPTION WATER COOLING-HEATING MACHINE AND CONTROLLING METHOD THEREOF 失效
公开(公告)号：JPH08152222A
公开(公告)日：1996-06-11
申请号：JP29173694
申请日：1994-11-25
申请人： TOKYO GAS CO LTD
发明人： KOJIMA HIROSHI , NAKAMURA MAKOTO , EDERA MASARU , OKA MASAHIRO
IPC分类号： F25B15/00
摘要： PURPOSE: To obtain an absorption water cooling-heating machine which is equipped with a high-quality fuel system and an exhaust heat utilizing system and which can prevent effectively occurrence of crystallization inside a heat exchanger interposed in a piping of the exhaust heat utilizing system and charged with an exhaust heat from outside, and a controlling method thereof. CONSTITUTION: When generation of an operation stop signal of a combustion burner 70 is detected by combustion burner stop detecting means 52, 54 and 56, it is judged by a time counting means that whether a prescribed time passes from the stop of the combustion burner or not, and when the prescribed time passes, a control signal is outputted from a control means 50 to a branch means V1 so that a fluid containing an exhaust heat may bypass heat exchangers 32 (32A-32K).

65. 发明专利

JPH07332787A ABSORPTION WATER COOLING-HEATING APPLIANCE AND CONTROLLING METHOD THEREOF 失效
公开(公告)号：JPH07332787A
公开(公告)日：1995-12-22
申请号：JP12846994
申请日：1994-06-10
申请人： TOKYO GAS CO LTD
发明人： KOJIMA HIROSHI , NAKAMURA MAKOTO , EDERA MASARU , OKA MASAHIRO
IPC分类号： F25B15/00
摘要： PURPOSE:To prevent effectively occurrence of crystallization in a heat exchanger which is interposed in a piping of an exhaust heat utilizing system and to which exhaust heat is applied from outside, in regard to an absorption water cooling- heating appliance equipped with a high-quality fuel system and the exhaust heat utilizing system. CONSTITUTION:When generation of an operation stop signal of a solution pump is detected by solution pump operation stop detecting means 52, 54 and 56, judgement is made by a time counting means as to whether a prescribed time passes from the stop of operation of the solution pump or not. When the prescribed time passes, a control signal is outputted from a control means 50 to a branch means V1 so that a fluid containing exhaust heat may bypass heat exchangers 32, 32A to 32K.

66. 发明专利

JPH0763435A ABSORPTION REFRIGERATING MACHINE AND CONTROLLING METHOD FOR ITS OPERATION 失效
公开(公告)号：JPH0763435A
公开(公告)日：1995-03-10
申请号：JP21150993
申请日：1993-08-26
申请人： TOKYO GAS CO LTD
发明人： KOJIMA HIROSHI , NAKAMURA MAKOTO , OKA MASAHIRO
IPC分类号： F25B15/00
摘要： PURPOSE:To promote compactness and simplicity in structure and lightness in weight and simplify the control by switching the supply of warm water from a cogeneration, etc., to an exhaust heat-solution heat exchanger when two heat sources are simultaneously used for the operation and to a low-temperature generator when warm water is used for the operation. CONSTITUTION:When the temperature of the low-temperature exhaust heat from a cogeneration 1, etc., is below a prescribed point, a gas-burning mode is selected and the flow rate of the gas is controlled according to the cooling load. When this temperature is above the prescribed point and the temperature of cold water at the outlet is below a prescribed point, a warm water-heated mode is selected and the flow rate to a low-temperature generator 13 utilizing low-temperature exhaust heat is controlled according to the cooling load; when the temperature of cold water at the outlet is above the prescribed point; mode combining utilization of exhaust heat with burning of gas (two heat sources in use) is selected and the flow rate to an exhaust heat-solution heat exchanger 17 utilizing low-temperature exhaust heat is controlled according to the cooling load. This method enables making the apparatus compact and simple in structure and light in weight and simplifying its control.

67. 发明专利

JPH0712423A METHOD AND DEVICE FOR CONTROLLING WASTE HEAT LINE 失效
公开(公告)号：JPH0712423A
公开(公告)日：1995-01-17
申请号：JP15331193
申请日：1993-06-24
申请人： TOKYO GAS CO LTD
发明人： KOJIMA HIROSHI , OKA MASAHIRO , NAKAMURA MAKOTO , NISHIMAKI SATOSHI
IPC分类号： F02G5/04 , F25B27/02
摘要： PURPOSE:To improve the efficiency of the whole of a waste heat utilizing system, in which a hot-water heating absorption refrigerating machine and a heat exchanger for supplying hot-water are interposed in the waste heat line of a co-generation system in series. CONSTITUTION:Upon controlling the waste heat line L1 of a system, in which a hot-water heating absorption refrigerating machine 2 and a heat exchanger 3 for supplying hot-water are interposed in the wasteheat line L1 of a co- generation system 1 in series, the temperature TH of hot waste water, which flows through a part at the downstream side of the heat exchanger 3 for supplying hot-water of the waste heat line L1, is detected by a temperature detecting means 9 arranged near the outlet port of the heat exchanger 3 for supplying hot-water, which is interposed at the downstream side of the waste heat line L1. The flow rate F1 of the hot waste water, supplied to the hot-water heating absorption refrigerating machine 2 interposed in the upstream side of the waste heat line L1, is determined the detected temperature TH of the hot waste water while the flow rate F1 of the hot waste water, supplied to the hot-water heating absorption refrigerating machine 2, is regulated on the basis of the determined flow rate F1.

68. 发明专利

JPH06185827A ABSORPTION HEAT PUMP USING LOW TEMPERATURE HEAT SOURCE 失效
公开(公告)号：JPH06185827A
公开(公告)日：1994-07-08
申请号：JP33829792
申请日：1992-12-18
申请人： TOKYO GAS CO LTD
发明人： KOJIMA HIROSHI , OKA MASAHIRO , NAKAMURA MAKOTO
IPC分类号： F25B15/00 , F25B30/04
摘要： PURPOSE:To reduce consumption quantity of vapor to be used to obtain warm water for heating by sequentially feeding the warm water for heating through a first absorber, a second absorber and a condenser, and absorbing absorption heat and condensation heat to raise its temperature. CONSTITUTION:Refrigerant vapor evaporated by an evaporator 1 is absorbed to absorption solution in a first absorber 2. Refrigerant vapor generated in a first generator 3 is absorbed to absorption solution in a second absorber 5. Dilute solution of the absorber 5 is separated into intermediate concentration solution and refrigerant vapor in a second generator 6. The intermediate solution is separated into concentrated solution and refrigerant vapor in a third generator 7. The concentrated solution is absorbed to the refrigerant vapor in the absorber 5. The refrigerant vapor generated from the generators 6, 7 is guided to a condenser 8. The refrigerant of the condenser 8 is sent to the evaporator 1. Warm water for heating is sequentially fed through the absorber 2, 5 and the condenser 8 while such a cycle is repeated, and raised by absorption heat by the absorber 5 and condensation heat by the condenser 8.

69. 发明专利

JPH06174330A COOLING AND HEATING DEVICE 失效
公开(公告)号：JPH06174330A
公开(公告)日：1994-06-24
申请号：JP32766892
申请日：1992-12-08
申请人： TOKYO GAS CO LTD
发明人： NAKAMURA MAKOTO , KOJIMA HIROSHI , OKA MASAHIRO
IPC分类号： F25B25/02 , F25B27/02
摘要： PURPOSE:To provide a cooling and heating device which is capable of corresponding to fluctuations in a heating value which is used as a drive heat source for an absorption refrigerator and operating both cooling and hating operations, and, what is more, effectively using the heating value possessed by cooling water heated with the absorption refrigerator. CONSTITUTION:Motor-driven heat pumps 12-1, 12-2 and 12-3 are connected to a piping system CL and a piping system ML where cooled water flows from an absorption refrigerator 2.

70. 发明专利

JP2002340427A ABSORPTION FREEZER 失效
公开(公告)号：JP2002340427A
公开(公告)日：2002-11-27
申请号：JP2001145168
申请日：2001-05-15
申请人： TOKYO GAS CO LTD
发明人： OKA MASAHIRO , KOJIMA HIROSHI
IPC分类号： F25B15/00 , F25B27/02
摘要： PROBLEM TO BE SOLVED: To reduce and save a high quality fuel supplied to a regenerator by heating a diluted solution using external waste heat. SOLUTION: There are provided a high temperature regenerator (Ge1), a middle temperature regenerator (Ge2), and a low temperature regenerator (Ge3). On solution lines (L14, L14a, L14b, L14c) for communicating any of the foregoing regenerators (Ge1, Ge2, Ge3) and an absorber (Ab), there is interposed waste heat throwing heat exchangers (1E, 2E, 3E) for introducing a heat amount possessed by a waste heat fluid from an external waste heat source into absorption solution flowing through the solution lines (L14, L14a, L14b, L14c).

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