公开(公告)号：JPH10122707A

公开(公告)日：1998-05-15

申请号：JP29585996

申请日：1996-10-18

Applicant: EBARA CORP

Inventor： MURATA JUN ,  INOUE OSAYUKI ,  MOCHIZUKI SADAICHI ,  MATSUDA NOBUTAKA

IPC: F25B43/04

Abstract: PROBLEM TO BE SOLVED: To provide a hydrogen gas discharger for an absorption refrigeration unit which can secure airtightness regardless of temperature change by improving the adhesion to the joint of a palladium pipe. SOLUTION: In a hydrogen gas discharger 9 which allows the permeation of the gas generated in an absorption refrigerating unit consisting of a gas reservoir 10 for reserving non-condensing gas, a paradigm pipe 11 or a palladium alloy pipe provided in the reservoir 10, and a heater 18 for heating the pipe 11, as for the paradigm pipe 11 or the paradigm alloy pipe, one end is sealed in cap form, and the open end on the other side is connected to a pipe joint provided in the gas reservoir 10, and this pipe joint comprises the joint body 15, a nut 17, and a sleeve 16, and it is one which is constituted so that at least one end of the sleeve 16 may bite in the palladium pipe or the palladium alloy pipe by inserting the paradigm pipe 11 or the palladium alloy pipe and fastening the nut 17, and it is good to provide the joint inside the pipe 11 with a backup ring, or to increase the thickness of the joint itself of the pipe more than the other section of the pipe.

公开(公告)号：JPH1047806A

公开(公告)日：1998-02-20

申请号：JP21503896

申请日：1996-07-26

Applicant: EBARA CORP

Inventor： KUBO KATSUHIRO ,  OKUDA TOSHIHIRO ,  INOUE OSAYUKI

IPC: F25B15/00

Abstract: PROBLEM TO BE SOLVED: To provide an absorption refrigerating machine capable of using 100% of intermediate and low temperature hot water by providing a heat exchanger only for hot water. SOLUTION: An absorption refrigerating machine using hot water as the heat source of a low temperature regenerator 2 comprises an absorber 4, an evaporator 3, a condenser 1, the low temperature regenerator 2, solution heat exchangers 7A and 7B, a solution pump P2, a refrigerant pump P1 and a pipeline for connecting them together. The absorption refrigerating machine is provided with a heat exchanger 6 only for hot water for heating hot water which is the heat source of the low temperature regenerator 2 and a high temperature regnerator 5 which uses gas, oil or high potential energy as a heat source, concentrates solution from the low temperature regenerator and supplies generated refrigerant steam to the hot water heat exchanger.

公开(公告)号：JPH09138082A

公开(公告)日：1997-05-27

申请号：JP32096895

申请日：1995-11-15

Applicant: EBARA CORP

Inventor： SUZUKI AKIYOSHI ,  YATSUHASHI HAJIME ,  INOUE OSAYUKI

IPC: F28F3/08 ,  F28D1/03 ,  F28D9/00 ,  F28F3/04 ,  F28F3/10

Abstract: PROBLEM TO BE SOLVED: To provide a plate-type heat exchanger and its manufacturing method in which the number of component parts can be less, a manufacturing cost or an assembling cost can be reduced and a high heat exchanging function is attained. SOLUTION: Two plates 4 having some corruptions therein are overlapped to each other through contact between these corrugations so as to form a space R1 inside them. The peripheral edges of the plates are contacted to each other over the entire circumference when they are overlapped to each other, they are sealingly closed by means not changing a shape of the contacted part. Heat exchanging elements having fluid flow passages therein are formed between openings formed at both ends of the plates 4 and a space. The heat exchanging elements are overlapped to each other and coupled froms each other so as to cause the openings to be communicated to each other, fluid is flowed inside and outside the heat exchanging elements to cause the fluids to be heat exchanged from each other.

公开(公告)号：JPH0961013A

公开(公告)日：1997-03-07

申请号：JP23600295

申请日：1995-08-22

Applicant: EBARA CORP

Inventor： YATSUHASHI HAJIME ,  INOUE OSAYUKI ,  SUZUKI AKIYOSHI

IPC: F28F1/40 ,  F25B37/00

Abstract: PROBLEM TO BE SOLVED: To provide an absorption refrigerating machine in which the heat- transfer performance has been improved by a liquid film formed evenly on the inside wall of a grooved tube. SOLUTION: The inside of the heat-transfer tube 1 of the absorber in an absorption refrigerating machine has a spiral groove, which is formed asymmetrically in relation of the right and left to a section right-angled to the groove and under conditions that either of the angles θ1 and θ2 made between the crest and the plane bottom of the groove should be in the range 70 deg.-110 deg. and smaller than the other, the helix angle of the spiral groove in the range 15 deg.-45 deg., formation of the groove at a pitch P=0.4 to 4.0mm, and the depth H of the groove in the range 0.3-0.7mm.

公开(公告)号：JPH0949698A

公开(公告)日：1997-02-18

申请号：JP22478795

申请日：1995-08-09

Applicant: EBARA CORP

Inventor： YATSUHASHI HAJIME ,  INOUE OSAYUKI ,  SUZUKI AKIYOSHI

IPC: F25B37/00 ,  F28D1/04 ,  F28D3/02 ,  F28F1/40

Abstract: PROBLEM TO BE SOLVED: To improve heat transfer performance by forming a uniform liquid film on an inner wall of a grooved tube. SOLUTION: This heat exchanger is constructed such that an upper header 2 and a lower header 4 are communicated through a plurality of heat transfer tubes 1, and a heat medium fluid is directed to flow down along an inner wall of the heat transfer tube 1 from the upper header 2 for heat exchange between the heat medium fluid and the heat transfer tube. In the heat exchanger, a spiral groove is formed in an inner surface of the heat transfer tube 1 which groove is formed so as to be upwardly inclined at a cross section including a tube axis.

公开(公告)号：JPH0886531A

公开(公告)日：1996-04-02

申请号：JP24672394

申请日：1994-09-16

Applicant: EBARA CORP

Inventor： INOUE OSAYUKI

IPC: F25B15/00

Abstract: PURPOSE: To reduce the capacity of a pump by dividing a solution circuit into a circuit for circulating a high-temperature regenerator and a circuit for circulating a low- temperature regenerator, introducing the solution of the high-temperature regenerator side to the scattering unit of an absorber by utilizing the pressure of the high- temperature regenerator, and backing up the solution of the low-temperature regenerator side by a solution spray pump. CONSTITUTION: In a dual-effect absorption refrigerator, an absorber A, an evaporator E, a high-temperature regenerator GH, a low-temperature regenerator GL, a condenser C, a high-temperature heat exchanger XH and a low-temperature heat exchanger XL are connected by solution circuits 1-9 and refrigerant circuits 10-13. In this case, the solution circuit is divided into dilute solution circuits 2, 4 for supplying dilute solution from the absorber A to the regenerators GH and GL and concentrated solution circuits 3 and 5, 6 for introducing the concentrated solution from the regenerator GH to an absorber scattering unit 9 via the exchangers XH and XL. A solution spray pump P4 is provided in the circuit 7, and the number of revolutions of the pump is controlled based on an evaporator refrigerant level and a signal for detecting the absorber dilute solution concentration.

公开(公告)号：JPH0854156A

公开(公告)日：1996-02-27

申请号：JP34716293

申请日：1993-12-27

Applicant: EBARA CORP

Inventor： INOUE OSAYUKI

IPC: F25B15/00 ,  F25B25/02 ,  F25B27/02

Abstract: PURPOSE:To provide a cooling and heating device utilizing the exhaust heat of an engine and the operating method thereof, which is capable of operating efficiently by a simple and compact device. CONSTITUTION:A cooling and heating device, utilizing the exhaust heat of an engine 5, is provided with an exhaust gas heat exchanger 26, recovering the exhaust heat of a generating engine 24 as hot-water or steam, an absorption type water cooling and heating machine as well as a heat exchanger for heating, employing the recovered exhaust heat as heat sources, and a cold water system 15 for cooling or a hot-water system 15 for heating, which is connected to the absorption type water cooling and heating machine and the heat exchanger for heating. A compression type refrigerating machine 23, utilizing an electric power generated by the generating engine 24, is connected to the cold water system 15 for cooling while an electric heater 22, utilizing an electric power generated by the generating engine 24, is connected to the hot-water system 15 for heating while the compression type refrigerating machine 23 or the electric heater 22 is driven by the electric power, generated by the generating engine, when an electric load is less than a rated load and cooling and heating load is higher than the cooling and heating output, outputted by the exhaust heat of the operating generating engine during cooling and heating operation.

公开(公告)号：JPH07139840A

公开(公告)日：1995-06-02

申请号：JP30710093

申请日：1993-11-15

Applicant: EBARA CORP

Inventor： YASUDA TAKASHI ,  SUZUKI AKIYOSHI ,  YATSUHASHI HAJIME ,  INOUE OSAYUKI

IPC: F25B15/00 ,  F25B47/00

Abstract: PURPOSE:To provide an absorption freezer capable of automatically adding a low solubility corrosion inhibitor such as a molybdate to a refrigerant by dissolving the inhibitor into the refrigerant, and of keeping concentration of the corrosion inhibitor within a proper range. CONSTITUTION:An absorption freezer is provided which comprises a regenerator G, an absorber A, an evaporator E, a condenser C, solution passages 1-4 that communicate the former members, refrigerant passages 7-9, a solution pump 5 and a refrigerant pump 6, and which takes water as a chief component of a refrigerant, and uses an aqueous salt solution for an absorption solution and further users a low solubility corrosion inhibitor. Accordingly, the device includes a corrosion inhibitor-adding device wherein there is provided an inhibitor tank 12 for containing a solid corrosion inhibitor, and the tank and the refrigerant passage 9 on a discharge side of a refrigerant pump are connected through a refrigerant piping 10 and the bottom of a tank 12 and the solution passage 1 on a suction side of the solution pump are connected through a solution piping 11 having a solution valve 14, the solution valve in the solution piping may including a mechanism 15 for controlling opening/closing time and further controlling an addition rate of the corrosion inhibitor.

公开(公告)号：JPH0763434A

公开(公告)日：1995-03-10

申请号：JP23429893

申请日：1993-08-27

Applicant: EBARA CORP

Inventor： SUZUKI AKIYOSHI ,  INOUE OSAYUKI ,  YATSUHASHI HAJIME

IPC: F25B15/00 ,  F25B30/04

Abstract: PURPOSE:To provide an absorption cooling-and-heating machine for which a relatively small refrigerant heat exchanger is employed and which is made to produce a flow of cool air or warm air only by the control of a transfer valve. CONSTITUTION:An absorption cooling-and-heating machine has generators 1, 6, and absorber 2, a condenser 3, devices which produce an ability to provide cooling or heating, and passages for a solution and ones for a refrigerant and transfer valves appertaining thereto for connection between the devices which produce an ability for the cooling or heating and produces a flow of cool air in cooling and a flow of warm air in heating. In this absorption machine the devices which produce an ability for the cooling or heating are separated into a heat exchange 4 and an evaporation tank 5, the former for the heat exchange with the load side (a flow of cool or warm air to be cooled or heated) and the latter for making the liquid refrigerant produce vapor. In cooling, heat exchange takes place between a flow of cool air and the liquid refrigerant in the heat exchanger 4 and the heated liquid refrigerant is made to produce its vapor in the evaporation tank 5; in heating, refrigerant vapor is sent from the generator 1 into the heat exchanger 4 to heat a flow of warm air and the liquid refrigerant discharged from the exchanger 4 is conveyed to the generator 1.

公开(公告)号：JPH06272935A

公开(公告)日：1994-09-27

申请号：JP8108093

申请日：1993-03-17

Applicant: EBARA CORP

Inventor： INOUE OSAYUKI ,  TANAKA YOSHIHARU ,  KATO KYOICHI

IPC: F24F11/02

Abstract: PURPOSE:To provide a control method of an air conditioning apparatus which enables smooth operation of an air conditioning system preventing dew formation. CONSTITUTION:In a control method of an air conditioning apparatus which has a cold/hot water piping 7 with an electric valve 5 connected to a fan 2. a cold/hot water coil 3 and a cold/hot water coil 3 in a easing 1 and a temperature sensor 6 mounted on the easing 1, the electric valve 5 is opened fully when the temperature of the easing 1 is below a specified value in the cooling operation and when the temperature is above a specified value in the heating operation while the fan 2 is stopped. In cases of other temperature, the electric valve 5 is kept open to a specified opening.