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1. 发明专利

JPH0219694A OIL-FREE VACUUM PUMP 失效
公开(公告)号：JPH0219694A
公开(公告)日：1990-01-23
申请号：JP17015688
申请日：1988-07-08
申请人： EBARA RES CO LTD , EBARA CORP
发明人： FURUYA YASUSHI , FUSAYASU YOSHIHIDE , YOKOI KEIJI
IPC分类号： F04D29/056 , F04D19/04 , F04D23/00 , F04D29/04 , F04D29/058
摘要： PURPOSE:To improve the pumping effect and to achieve high vacuum by supporting the opposite ends of a rotary shaft on radial magnetic bearings and supporting the section between the rotor of a motor and the final stage pump of a multi-stage volute pump on a thrust magnetic bearing. CONSTITUTION:Viscous drag pump rotors 4, 4a, volute pump rotors 5a-5d of pumps I, II and the rotor of a motor 6 are formed integrally with a rotary shaft 1. The opposite ends of the rotary shaft 1 are supported by a magnetic radial bearing 2 while the section between the motor rotor 6 and the final sage rotor 5d of a multi-stage volute pump is supported by a magnetic thrust bearing 3. By such arrangement, the micro gap is reduced sufficiently to improve the pumping effect thus achieving high vacuum through a single unit.

2. 发明专利

JPS63156964A AIR CURTAIN SYSTEM 失效
公开(公告)号：JPS63156964A
公开(公告)日：1988-06-30
申请号：JP30392886
申请日：1986-12-22
申请人： EBARA CORP , EBARA RES CO LTD
发明人： SHINJO RYOICHI , KOMATSU KOZO , FURUYA YASUSHI
IPC分类号： F24F9/00
摘要： PURPOSE:To perform function of both cutting off the open air and ventilation, by a method wherein a sensor detecting an indoor and an outdoor pressure and contamination concentration of indoor air is mounted, and from its detecting output, automatic control is made on the velocity of discharge flow of a jet of an air curtain. CONSTITUTION:A pressure sensor C1 is mounted to a front wall in the vicinity of an opening part, and a velocity of open air flow Vs is detected in a state of being converted into a pressure. A detected pressure Pstag is indicated by means of a pressure gauge A1, and the rotational speed of a motor 7 of a blower 6 is varied through an inverter INV according to a program preinputted to a controller CNT. The variation of the rotational speed controls flow rate QJ in a duct 11, i.e. velocity of flow VJ of a nozzle 3-1, and brings an air curtain 5 into an excellent condition state. Further, through control effected on detected outputs from outer and inner pressure sensors C1 and CIR and contamination concentration C2, contaminated air is discharged through a suction port 8.

3. 发明专利

JPS63156963A AIR CURTAIN SYSTEM 失效
公开(公告)号：JPS63156963A
公开(公告)日：1988-06-30
申请号：JP30392786
申请日：1986-12-22
申请人： EBARA CORP , EBARA RES CO LTD
发明人： SHINJO RYOICHI , FURUYA YASUSHI , KOMATSU KOZO
IPC分类号： F24F9/00
摘要： PURPOSE:To form an air curtain at a high wind area, by a method wherein a discharge port and a suction port for a jet flow are intercoupled through a duct to form a closed loop, where a variable blower and a noise absorbing device are incorporated, and a discharge nozzle forms a multilayer parallel nozzle. CONSTITUTION:A discharge chamber 8 and a suction chamber 7 of an air curtain are intercoupled through a duct 9. A blower 1, varying an airflow, is mounted in the duct 9. Air from a blower 1 is introduced to the discharge chamber 8, and noise is absorbed and a flow is uniformized by means of a noise absorbing plate 2 to discharge air through a multilayer parallel nozzle 4 of the discharge port by means of a filter 3. The discharged air forms an air curtain to return it to the blower 1 by its passage through the suction chamber 7 from a louver 5 of the suction port. The multilayer parallel nozzle 4 suppresses diffusion of a jet, and enables improvement of a shut-off effect of an outer air at a low jet speed. This constitution enables an air curtain system to be installed even to a building under strong wind environment without producing unpleasant feeling of a passerby.

4. 发明专利

JPS62267597A CENTRIFUGAL IMPELLER 失效
公开(公告)号：JPS62267597A
公开(公告)日：1987-11-20
申请号：JP10941986
申请日：1986-05-15
申请人： EBARA RES CO LTD , EBARA CORP
发明人： FURUYA YASUSHI , KOIKE KEIJI
IPC分类号： F04D29/30
摘要： PURPOSE:To enlarge the operating area by regulating the hub side inlet vane angle of an impeller at the inlet section of an inducer thereby increasing the throat area. CONSTITUTION:When the hub side radius of an impeller at the inlet section of an inducer 2 is RH, the shroud side radius is Rs, the hub side inlet vane angle is betaH and the shroud side inlet vane angle is betas, the angle betaH is regulated such that tan [(RH/Rs)tanbetas]-20 deg. [(RH/Rs)tanbetas]-6 deg.. The vane face of the inducer is curved in convex against the vane edges at the hub and shroud sides toward the rotary direction. Consequently, the throat area is increased and the operating area is enlarged.

5. 发明专利

JPH0278793A MULTISTAGE VOLUTE TYPE VACUUM PUMP 失效
公开(公告)号：JPH0278793A
公开(公告)日：1990-03-19
申请号：JP22885688
申请日：1988-09-14
申请人： EBARA CORP , EBARA RES CO LTD
发明人： YOKOI KEIJI , FUSAYASU YOSHIHIDE , FURUYA YASUSHI
IPC分类号： F04D29/056 , F04D19/04 , F04D23/00 , F04D29/04 , F04D29/058
摘要： PURPOSE:To improve the vibration characteristic, stability and pump performance by forming an impeller shaft and an electric motor rotor for driving said shaft into an integral rotating shaft, supporting the both end parts of the rotating shaft by magnetic bearings, and cooling the rotating shaft. CONSTITUTION:A multistage impeller shaft 5 and a casing surrounding the impeller 5 to form a fluid passage are provided in the inside of a housing 3 having a suction port 1 and exhaust port 7 formed thereon. In this case, the impeller 5 and an electric motor rotor 9 are formed into an integral rotating shaft 6. Radial magnetic bearings 2, 2' are provided between the both end parts of the rotating shaft 6 and the housing 3, respectively, and also a thrust magnetic bearing 10 is provided near the bearing 2'. The electric motor rotor 9 in the rotating shaft 6 has a hollow part 6a formed between them, and a coolant feed conduit 11 is provided in the inside so as not to touch the hollow part 6a.

6. 发明专利

JPS62254802A STEAM RECOMPRESSING TYPE EVAPORATOR 失效
公开(公告)号：JPS62254802A
公开(公告)日：1987-11-06
申请号：JP9828686
申请日：1986-04-30
申请人： EBARA CORP , EBARA RES CO LTD
发明人： OGAWA YASUO , FURUYA YASUSHI
IPC分类号： B01D1/28
摘要： PURPOSE:To reduce the costs of washing and equipment by injecting an acidic cleaning soln. into an evaporator along with waste liq. based on the signal of the contamination of a heat-transfer surface in the evaporator, and neutralizing the acidic cleaning soln. when the liq. concentrate is discharged to the outside of the system. CONSTITUTION:When the amt. of the deposit on a heating tube 3 of the evaporator 1 is increased, the increase is detected by a scale deposition signal transmitter 4, and a signal is outputted. When the signal is outputted, the motor-operated value 20 of a liq. concentrate discharge pipe 5 is closed, a solenoid valve 21 is opened, and the cleaning soln. is injected into a waste liq. supply pipe 7. A valve 22 is then opened, and a neutralizer is injected into a tank 6. Scales are removed under such conditions. When the removal of scales is finished, the valves 21 and 22 are closed, the valve 20 is opened, and normal operation is resumed. A steam compressor 2 is not stopped in this method, and scales are removed with a small amt. of cleaning soln. without providing an additional tank.

7. 发明专利

JPH0367941A COLD STORAGE DEVICE 失效
公开(公告)号：JPH0367941A
公开(公告)日：1991-03-22
申请号：JP20036689
申请日：1989-08-03
申请人： EBARA RES CO LTD
发明人： OGAWA YASUO , FURUYA YASUSHI
IPC分类号： F24F5/00
摘要： PURPOSE:To improve an evaporator performance and perform a stable operation by providing an evaporator with bypass means for bypassing a high pressure refrigerant gas in a passage from a compressor to an expansion valve to the evaporator. CONSTITUTION:A condenser 33 is cooled by a fan 21, a cooled refrigerant is condensed and its pressure is reduced by an expansion valve 34. The refriger ant absorbs heat by freezing water in an evaporator 36 via a header 35 to be evaporated. The evaporator 36 is provided with a fan 38 outside a refrigerant passage 37 whereby a cooling capacity is improved. Evaporated refrigerant gas is drawn by a compressor 39 to be compressed and discharged into the condenser 33 again via a header 40. On the other hand, water in the bottom portion of an ice tank unit 32 is sucked by a pump 41, fed to a header 44 via a three way valve 42 and a pipeline 43 and blown out from a flowout portion 45 in the direction of a fin portion. Therefore, ice 46 grows on the fin portion and, at a time when the thickness of the ice is increased, a bypass control valve 47 is opened. The opening of the valve 47 is controlled by the signal of a detector 48 so that an evaporating temperature is above 0 deg.C.

8. 发明专利

JPH1047716A METHOD OF REFORMING HEATING SYSTEM TO HEATING AND COOLING SYSTEM 失效
公开(公告)号：JPH1047716A
公开(公告)日：1998-02-20
申请号：JP12286997
申请日：1997-04-28
申请人： EBARA RES CO LTD
发明人： OGAWA YASUO , FURUYA YASUSHI
IPC分类号： F24F5/00
摘要： PROBLEM TO BE SOLVED: To provide a method of capable of reforming a heating system to a heating and cooling system with a simple work, a small space, and an inexpensive construction cost. SOLUTION: The present heating system is constructed by feeding warm water heated by a warm water boiler 6 to fan coil units 7, 7', 7" through a pipe 13. In this case, load cooling means of art ice storage system 10 for making ice with a compression freezer 19 is connected with the pipe system 13 of the heating system to construct a cooling system. In this case, there is provided bypass means for bypassing to an evaporator high pressure refrigerant gas in a passage of the ice storage system from a compressor to an expansion valve, and the bypass means is constructed such that internal pressure in the becomes higher than saturated pressure corresponding to the refrigerant of 0 deg.C upon bypassing.

9. 发明专利

JPH0359335A THERMAL ACCUMULATION SYSTEM 失效
公开(公告)号：JPH0359335A
公开(公告)日：1991-03-14
申请号：JP19254289
申请日：1989-07-27
申请人： EBARA RES CO LTD
发明人： FURUYA YASUSHI , OGAWA YASUO
IPC分类号： F24F5/00
摘要： PURPOSE:To provide a thermal accumulating device showing a better thermal transmitting efficiency, an easy maintenance and a better thermal accumulating efficiency within a thermal accumulation container by a method wherein as medium, more than two kinds of mixture liquids obtained by mixing liquid not melted in water, having a lower condensing point than that of water and having a higher specific weight with water are used. CONSTITUTION:As a medium, more than two kinds of mixture liquids of water and liquid not solved in water, having a lower condensing point than that of water and having a higher specific weight are used. As liquid to be used together with water, there are trichlorotrifuloroethane and dichloropentafuloropropane or the like. Cold water discharged from a water layer 52 is increased in its pressure by a pump 31, enters an ejector 32, merges with organic medium guided through a communicating pipe 35 connected to a low pressure side with the ejector 32 as well as through a organic medium layer 53 having a higher specific weight so as to make a mixed medium. The cold water passes through a piping 36 and enters an ice making device 4. The mixed medium passes through a thermal conducting pipe 37 and is cooled there, a part of the water makes ice. The water is guided to the piping 38 and then the water is separated into an ice layer 51, a water layer 52 and an organic medium layer 53 by a thermal accumulator 33. This cycle is repeated and the ice is accumulated in the thermal accumulation device 33.

10. 发明专利

JPH02219933A COLD STORAGE SYSTEM 失效
公开(公告)号：JPH02219933A
公开(公告)日：1990-09-03
申请号：JP4218789
申请日：1989-02-21
申请人： EBARA RES CO LTD
发明人： FURUYA YASUSHI , OGAWA YASUO , NOMICHI SHINJI
IPC分类号： F24F5/00
摘要： PURPOSE:To provide a cold storage system which is small in size, excellent in heat transfer efficiency in a cold storage container, safe and easy for maintenance, and excellent in cold storage efficiency by a method wherein by means of a medium cooled by a freezer during storage of cold, a high water absorptive resin substance in a cold storage container is cooled, water held by the high water absorptive resin substance is frozen, and by means of the latent heat of the water, cold is storage. CONSTITUTION:When there is no cooling load during the night, a medium cooled by a freezer flows through a gap between the grains of a granular high water absorptive resin substance 33 by which water in a cold storage container 32 is held and makes direct contact therewith for heat exchange to ice water held in the high water absorptive resin substance 33. The medium itself is heated and flows through a piping 45 back to a pump 31 for circulation to store a cold heat in a latent heat state of ice. Meanwhile, when there is a cooling load during a daytime, a 3-way valve 34 is switched, the medium flowing from the pump 31 flows through a piping 46 to a heat exchanger 36. Cooling load fluid fed through a piping 51 is cooled by means of the heat exchanger 36, and flows from a piping 52 and is fed to a cooling load.

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