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21. 发明专利

JPH04203375A SCROLL COMPRESSOR 失效
公开(公告)号：JPH04203375A
公开(公告)日：1992-07-23
申请号：JP32933990
申请日：1990-11-30
申请人： HITACHI LTD
发明人： MIYAKE SHIGEJI , TAMURA TAKAHIRO , SAKURAI KAZUO
IPC分类号： F04C18/02
摘要： PURPOSE:To prevent a turning, a poor compression caused by a poor fitting of a fixed scroll, a seizure at sliding part between both scrolls and widen a range of operating pressure by a method wherein a back pressure chamber and a discharging pressure part are communicated through a passage having a resistoring means therein. CONSTITUTION:A part of lubricant oil being kept at a discharging pressure is reduced in its pressure by a resisting means 22, the lubricant oil flows into a back pressure chamber 17, its pressure is reduced through a back pressure hole 16, thereafter the lubricant is flowed into a compression chamber 23 being compressed. With such an arrangement, a resistance value of a resisting means 22, a position of the back pressure hole 16, its resisting value, its sucking pressure and its discharging pressure may determine a pressure in the back pressure chamber 17. Due to this fact, the resisting values of the resisting means 22 and in the back pressure hole 16 are made as appropriate values to enable an appropriate pressure to be kept within the back pressure chamber 7 in respect to the sucking pressure and the discharging pressure. Accordingly, it is possible to prevent the turning scroll 6 from being removed from the fixed scroll 5 caused by a lack of pressure in the back pressure chamber 17 and further to prevent a seizure at a sliding part between the turning scroll 6 and the fixed scroll 5 due to an excessive pressure at the back pressure chamber 17.

22. 发明专利

JP2007132233A Scroll compressor 有权
标题翻译：滚动压缩机
公开(公告)号：JP2007132233A
公开(公告)日：2007-05-31
申请号：JP2005324649
申请日：2005-11-09
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TSUCHIYA TAKESHI , YANASE YUICHI , FUJIMURA KAZUYUKI , AOKI MAKOTO , MIYAKE SHIGEJI , MATSUNAGA MUTSUNORI , NOZAWA SHIGEKAZU , OTAWARA MASARU
IPC分类号： F04C18/02 , F04C29/00
摘要： PROBLEM TO BE SOLVED: To provide a proper pressing force against a rotary scroll, in a scroll compressor.
SOLUTION: The scroll compressor has: a crankshaft 101 which turn drives the rotary scroll 120; a pressure separating means separating a space 180 formed on a back surface of the rotary scroll 120 into a central space 181 approximately equal in pressure to discharge pressure and an outer peripheral space 182 lower in pressure than the central space 181; a sliding bearing 104 supporting the crankshaft 101; and a frame 160 of the sliding bearing 104; a thrust bearing 204 supporting the crankshaft 101. The thrust bearing 204 is made of a member different from the sliding bearing 104 and the frame 160, and an opposite side to a bearing surface of the thrust bearing 204 is supported by a support surface 162 constituted of the frame 160, and an inner diameter of the frame support surface 162 is smaller than an outer diameter of the sliding bearing 104.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：在涡旋式压缩机中提供对旋转涡旋件的适当的按压力。涡旋压缩机具有：曲轴101，其转动驱动旋转涡旋件120; 压力分离装置，将形成在旋转涡旋件120的后表面上的空间180分离成与排出压力大致相等的中心空间181和与中心空间181相比压力低的外周空间182; 支承曲轴101的滑动轴承104; 和滑动轴承104的框架160; 推力轴承204支撑曲轴101.推力轴承204由与滑动轴承104和框架160不同的构件制成，并且与推力轴承204的支承表面相反的一侧由构成的支撑表面162支撑并且框架支撑表面162的内径小于滑动轴承104的外径。版权所有（C）2007，JPO＆INPIT

23. 发明专利

JP2003239874A SCROLL COMPRESSOR 失效
公开(公告)号：JP2003239874A
公开(公告)日：2003-08-27
申请号：JP2001169049
申请日：2001-06-05
申请人： HITACHI LTD , HITACHI SHIMIZU ENG CO LTD
发明人： UEDA HIDEYUKI , TANAKA KEIJI , MIYAKE SHIGEJI , IMAMURA HIROYUKI , YANASE YUICHI , IIZUKA YASUNARI , TOJO KENJI
IPC分类号： F04C29/00 , F04C18/02 , F04C29/02
摘要： PROBLEM TO BE SOLVED: To improve reliability of a scroll compressor using coolant containing no chlorine such as HFC as working fluid by supplying lubricating oil to a sliding surface of a key and a key groove provided on a self rotation preventing member and a fixed member, and preventing contact of the key and the key groove. SOLUTION: In the scroll compressor using coolant containing no chlorine such as HFC, both end parts of the surface of the key of the self rotation preventing member sliding on the key groove of the fixed member is formed with a curved line of a fixed curvature radius of 10 μm or more. COPYRIGHT: (C)2003,JPO

24. 发明专利

JP2003193986A HERMETIC SCROLL COMPRESSOR 审中-公开
公开(公告)号：JP2003193986A
公开(公告)日：2003-07-09
申请号：JP2001391813
申请日：2001-12-25
申请人： HITACHI LTD
发明人： HASEGAWA SHUJI , MIYAKE SHIGEJI
IPC分类号： F04C29/02 , F04C18/02
摘要： PROBLEM TO BE SOLVED: To reduce the amount of oil rise outside a closed vessel of a hermetic scroll compressor. SOLUTION: In the hermetic scroll compressor, a compression mechanism part 2 composed of a fixed scroll 5, swivel scroll 6 and the like are disposed on the upper part in a cylindrical closed vessel 1, an electric motor part 3 driving the compression mechanism and an oil reservoir 4 are disposed on the lower and bottom part respectively in the cylindrical closed vessel 1, a crank part of driving shaft 9 is connected to the swivel scroll 6, an intermediate part is held by a frame 7, and the lower end part lower than the electric motor part 3 is supported by a lower cover 22 integrally formed with the frame 7. Coolant gas containing lubricating oil is delivered from the compression mechanism 2 and passes through the electric motor part 3, and then, collides with the bottom part of the lower cover 22 to separate gas and oil and drops the oil from an oil passage 21 formed on the lower cover 22 to the oil reservoir 4. And then, the gas collides with the inner wall of the closed vessel 1 from a gas passage hole 20 to separate oil. Thus, lubricating oil going out of the compressor accompanying the delivered coolant gas, so-called oil rise, can be reduced. COPYRIGHT: (C)2003,JPO

25. 发明专利

JP2002327975A AIR CONDITIONER 失效
公开(公告)号：JP2002327975A
公开(公告)日：2002-11-15
申请号：JP2001134115
申请日：2001-05-01
申请人： HITACHI LTD
发明人： NAKAMURA KENICHI , NAGAMATSU SHINICHIRO , SASAKI TOSHIHARU , TSUBOE HIROAKI , MIYAKE SHIGEJI
IPC分类号： F25B1/00 , F25B43/02
摘要： PROBLEM TO BE SOLVED: To provide an air conditioner which optimizes an oil holding amount in a compressor in a refrigerating cycle having in combination a variable volume compressor and a constant volume compressor and which reduces the oil holding amount of the overall refrigerating cycle. SOLUTION: The air conditioner comprises the refrigerating cycle having a plurality of the compressors, a gas-liquid separator, an oil separator, a heat source side heat exchanger, various types of expansion valves and a user side heat exchanger sequentially connected via a duct in such a manner that an oil discharging connecting port, low-pressure side ducts such as a discharge duct and a suction duct or the like are provided in the compressors. The conditioner further comprises a return oil duct for connecting the connecting port of the compressor to the discharge duct of an upstream side from a confluent point of the discharge duct, and an oil return circuit for connecting the discharge duct of the upstream side from the confluent point of the discharge duct to the low-pressure side duct.

26. 发明专利

JPH05231354A CONTROL DEVICE FOR HEAT PUMP TYPE AIR CONDITIONER USING SCROLL COMPRESSOR 失效
公开(公告)号：JPH05231354A
公开(公告)日：1993-09-07
申请号：JP3519192
申请日：1992-02-21
申请人： HITACHI LTD
发明人： MIYAKE SHIGEJI , TAMURA TAKAHIRO , SAKURAI KAZUO
IPC分类号： F04C18/02 , F04C28/26
摘要： PURPOSE:To improve reliability of each part and bearing of a compressor by controlling a flow amount, temperature and a pressure of delivery gas of the compressor, increasing room heating capacity at the time of such as starting room heating, and controlling the temperature of delivery gas at the time of steady operation, in a heat pump type air conditioner using the scroll compressor. CONSTITUTION:A pair of bypass through holes 7 connected to closed space between laps of both fixed and turning scrolls under a noncommunication condition with a suction chamber are provided in a baseplate of a fixed scroll 5 of a scroll compressor. An outlet side liquid pipe 21 of a condenser 17 and a delivery side gas pipe 22 of the compressor are connected to the bypass flow hole 7 respectively through pressure reducing means 23a, 23b and opening/closing valves 24a, 24b. Accordingly, by opening the opening/closing valves 24a, 24b at the time of room heating capacity insufficient such as starting room heating, a flow amount of delivery gas of the compressor is increased further with a temperature of delivery gas rising, and the room heating capacity can be improved.

27. 发明专利

JPH05164069A CLOSED TYPE SCROLL COMPRESSOR 失效
公开(公告)号：JPH05164069A
公开(公告)日：1993-06-29
申请号：JP33473491
申请日：1991-12-18
申请人： HITACHI LTD
发明人： MIYAKE SHIGEJI , TAMURA TAKAHIRO , SAKURAI KAZUO , MATSUNAGA MUTSUNORI
IPC分类号： F04C18/02 , F04C29/02 , F04C29/04
摘要： PURPOSE:To cool effectively a driving electric motor, by separating lubricating oil contained in compressed refrigerant gas, and carrying out excellently a returning operation of the lubricating oil into an oil reservoir, in a high pressure chamber type closed scrool compressor. CONSTITUTION:A guide passage 21 is formed of a groove arranged in the outer peripheral part of a frame, a guide plate 19 arranged between a compression mechanism part and a driving electric motor part, a cut part 20 arranged in the outer peripheral part of the driving electric motor part and an inner wall of a closed container, and an upper space 16 and a lower space 22 are communicated with each other by means of the guide passage 21, and the guide passage 21 and a middle space 23 are cut off from each other.

28. 发明专利

JPH05133356A CLOSED TYPE SCROLL COMPRESSOR AND OIL SUPPLY DEVICE THEREOF 失效
公开(公告)号：JPH05133356A
公开(公告)日：1993-05-28
申请号：JP29311491
申请日：1991-11-08
申请人： HITACHI LTD
发明人： TAMURA TAKAHIRO , SAKURAI KAZUO , MIYAKE SHIGEJI , MATSUNAGA MUTSUNORI
IPC分类号： F04C18/02 , F04C29/00 , F04C29/02 , F04C29/12
摘要： PURPOSE:To improve cooling of an electric motor so as to prevent a stator from its burning by connecting one end of a turning scroll and a frame bearing to an intermediate pressure chamber and the other end to a suction pressure part, and supplying oil to a bearing with a differential pressure between intermediate and suction pressures. CONSTITUTION:Delivery gas from a delivery port 5d of a fixed scroll 5 is accumulated in an oil reservoir 10 to separate oil from the delivery gas. The oil reservoir 10 is connected to an intermediate pressure chamber 8a of a scroll compressor through a throttle mechanism 12 to temporarily accumulate oil in the intermediate pressure chamber 8a. Gas of foaming for reducing a pressure from a delivery pressure to an intermediate pressure is discharged in a lap 4b through a conduction hole 4d. Oil is supplied to bearings 4c, 8b, provided in a turning scroll 4 and a frame 8, by a differential pressure between intermediate and suction pressures. In this way, an electric motor 3 is efficiently cooled by suction gas. Oil of high viscosity with small amount of refrigerant gas is supplied to bearings 4c, 8b, provided in the turning scroll 4 and the frame 8, to ensure an oil film.

29. 发明专利

JPH05133355A OIL SUPPLY DEVICE FOR CLOSED TYPE SCROLL COMPRESSOR 失效
公开(公告)号：JPH05133355A
公开(公告)日：1993-05-28
申请号：JP29270691
申请日：1991-11-08
申请人： HITACHI LTD
发明人： SAKURAI KAZUO , TAMURA TAKAHIRO , MIYAKE SHIGEJI , MATSUNAGA MUTSUNORI
IPC分类号： F04C18/02 , F04C29/02 , F04C29/04 , F04C29/12
摘要： PURPOSE:To efficiently cool an electric motor by suction gas by placing an electric motor part in a condition of suction pressure, and supplying oil to a compression mechanism part with a differential pressure from an oil reservoir vessel connected to a delivery hole of a fixed scroll. CONSTITUTION:A base plate 4a of a turning scroll 4 is interposed in a slidable manner between a base plate 5a of a fixed scroll 5 and a frame 7, in a closed vessel 1. Further, an intermediate pressure chamber of intermediate pressure between suction and delivery pressures is provided in a back surface of the turning scroll 4. An electric motor part 3 is placed in a condition of suction pressure to provide an oil reservoir vessel 10 of separate unit connected to a delivery hole 5d of the fixed scroll 5. An oil path 12 for supplying oil to a compressing mechanism part 2 with a differential pressure from the oil reservoir vessel 10 is formed. Further, the delivery hole 5d is connected to the oil reservoir vessel 10, and oil contained in delivery gas is separated in the oil reservoir vessel 10. In this way, a stator can be prevented from its burning by improving cooling of the electric motor 3, and oil can be surely supplied to a bearing by decreasing oil shortage.

30. 发明专利

JPH05106565A SCROLL COMPRESSOR 失效
公开(公告)号：JPH05106565A
公开(公告)日：1993-04-27
申请号：JP26926191
申请日：1991-10-17
申请人： HITACHI LTD
发明人： SAKURAI KAZUO , TAMURA TAKAHIRO , MIYAKE SHIGEJI , MATSUNAGA MUTSUNORI
IPC分类号： F04C18/02
摘要： PURPOSE:To prevent seizure, sticking, wear, etc., by supplying lubricant oil certainly to key-shaped projections on an Oldham ring of a scroll compressor and to key seats in which the projections are fitted slidingly. CONSTITUTION:When a key-shaped projection furnished on an Oldham ring 8 has moved in the max. stroke, non-contact part is formed between a plurality of key-shaped projections and a plurality of key seats furnished in a stationary pedestal 7a of a frame 7 and a revolving scroll 6. Thereby oil is supplied certainly to the sliding surfaces of the projections, which prevents seizure, sticking, wear, etc., and enhances the sliding characteristics.

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