专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2003206877A CLOSED ROTARY COMPRESSOR 审中-公开
公开(公告)号：JP2003206877A
公开(公告)日：2003-07-25
申请号：JP2002004030
申请日：2002-01-11
申请人： HITACHI LTD
发明人： KONO TAKESHI , KOSOKABE HIROKATSU , ISHIYAMA AKIHIKO , MUKAI YUUGO
IPC分类号： F04C29/00 , F04C18/32 , F04C18/356 , F04C29/02
摘要： PROBLEM TO BE SOLVED: To prevent an internal leakage from occurring due to insufficient oil volume in a cylinder in a low speed range and a suction air heating loss and an increase in discharge oil volume from occurring due to defective lubrication of sliding parts and an excessive amount of oil supplied to the cylinder in a high speed range, even when the volume of supply oil in a roller part is varied by a rotational speed. SOLUTION: This rotary compressor comprises motors controlled at different rotational speeds. The inside of a closed container is under a suction pressure. A front part allowing lubricating oil supplied to the inner surface of the roller part to flow therein and a rear part alternately reciprocating between the front part and a suction side and temporarily holding the lubricating oil in the front part are provided on an end plate closing a roller in the cylinder. COPYRIGHT: (C)2003,JPO

2. 发明专利

JP2003202161A FREEZING AIR CONDITIONING DEVICE 审中-公开
公开(公告)号：JP2003202161A
公开(公告)日：2003-07-18
申请号：JP2002003214
申请日：2002-01-10
申请人： HITACHI LTD
发明人： ENDO KAZUHIRO , KOSOKABE HIROKATSU , KONO TAKESHI , ISHIYAMA AKIHIKO , MUKAI YUUGO
IPC分类号： F04C29/02 , F04C18/00 , F25B1/00 , F25B1/10 , F25B40/00 , F25B43/00
摘要： PROBLEM TO BE SOLVED: To secure high reliability in a freezing air conditioning device by returning oil in a freezing cycle to a compressor while maintaining high performance with switching multi-stage compression and two stage compression, and to make it easy to cope with a natural refrigerant. SOLUTION: This device is provided with a freezing cycle having a compressor 10, an outdoor heat exchanger 32, a pressure reducing device 33 and an indoor heat exchanger 31 connected thereon, means 14, 13a, 13b for switching operating condition, and mechanisms 20, 12a, 12a' for separating oil in refrigerant in the freezing cycle. The compressor 10 is provided with a sealed vessel 40 having pressure of a inner space set lower than discharging pressure, and an electrical element and two compressing elements 11, 12 stored in the sealed vessel 40. The switching means 14, 13a, 13b can switch the two compressing elements 11, 12 in a series connection operation and a parallel connection operation, The oil separating mechanisms 20, 12a, 12a' is provided on suction sides of the two compressing elements 11, 12 respectively. COPYRIGHT: (C)2003,JPO

3. 发明专利

JP2003004352A Reciprocating type compressor 审中-公开
标题翻译：再生式压缩机
公开(公告)号：JP2003004352A
公开(公告)日：2003-01-08
申请号：JP2001185746
申请日：2001-06-20
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ISHIYAMA AKIHIKO , TAGAWA SHIGETARO , AKISAWA TAKEHIRO , KONDO TATSUYA
IPC分类号： F04B49/06 , F25B1/00 , F25B1/02 , F25D11/00
摘要： PROBLEM TO BE SOLVED: To solve the problem in an inverter-controlled freezing refrigerator that a change in a pressure applied on a compressor, as well as a change in the number of revolutions, due to an ambient environmental temperature, the amount of stored food, etc., results in a change in a load torque and a torque fluctuation brought about by the deflection of the load torque from an output torque of a motor causes vibration and noise.
SOLUTION: A torque control giving the output torque of the motor conforming substantially to the load torque in each condition, by means of a position detecting element, setting of a pattern or others, is used.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了解决逆变器控制的冷冻冰箱中施加在压缩机上的压力变化以及由于周围环境温度而导致的转数的变化的问题，存储食物的量导致负载转矩的变化，由电动机的输出转矩引起的负载转矩的偏转引起的转矩波动引起振动和噪声。解决方案：使用通过位置检测元件，图案等的设置，给出电机的输出转矩基本上符合每个状态下的负载转矩的转矩控制。

4. 发明专利

JP2002371973A Rocking piston type compressor 审中-公开
标题翻译：滚动活塞式压缩机
公开(公告)号：JP2002371973A
公开(公告)日：2002-12-26
申请号：JP2001183039
申请日：2001-06-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOSOKABE HIROKATSU , ENDO KAZUHIRO , KONO TAKESHI , ISHIYAMA AKIHIKO , MUKAI YUUGO
IPC分类号： F04C29/12 , F04C18/00 , F04C29/00 , F04C29/02
摘要： PROBLEM TO BE SOLVED: To provide a rocking piston type compressor preventing impairment of compressed gas sealing performance, reducing wearing between a sliding member and a sliding hole by certainly supplying lubricating oil into a load supporting position of the sliding hole, and having high performance and high durability.
SOLUTION: A platy vane 8b is projected our from a roller 8a, thereby dividing the inside of a cylinder 1 into a sucking chamber 12 connecting to a sucking port 3a and a compressing chamber 11 connecting to a discharging port 3b. A sliding hole 1b into which the vane 8a is inserted is formed on the outside of an cylindrical inner peripheral surface 1a of the cylinder 1, and a sliding member 10 is put in a space with the sliding hole 1b on both sides of the vane 8a. The circumferential length of an abutting surface between the sliding member 10 and the sliding hole 1b in the sucking port 3a side is made to be shorter than the circumferential length of an abutting surface between the sliding member 10 and the sliding hole 1b in the discharging port 3b side.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种防止压缩气体密封性能受损的摇摆式活塞式压缩机，通过将润滑油肯定地供给到滑动孔的负载支撑位置，减少滑动构件和滑动孔之间的磨损，并且具有高性能和耐用性高。解决方案：板状叶片8b从辊8a突出，从而将圆筒1的内部分成连接到吸入口3a和连接到排出口3b的压缩室11的吸入室12。在圆筒1的圆筒状的内周面1a的外侧形成有插入有叶片8a的滑动孔1b，滑动构件10放置在叶片8a的两侧的滑动孔1b的空间内。滑动构件10与吸入口3a侧的滑动孔1b的抵接面的周向长度比排出口内的滑动构件10与滑动孔1b的抵接面的周长短 3b侧。

5. 发明专利

JPH0968165A RECIPROCATION COMPRESSOR 失效
公开(公告)号：JPH0968165A
公开(公告)日：1997-03-11
申请号：JP21892395
申请日：1995-08-28
申请人： HITACHI LTD
发明人： YAMAMOTO KOJI , ISHIYAMA AKIHIKO , KAWAMINAMI SHIGEYA
IPC分类号： F04B39/00 , F04B35/01
摘要： PROBLEM TO BE SOLVED: To enhance reliability and prevent noise of low frequency range from occurring by preventing bias in a bearing caused by a crankshaft. SOLUTION: A crankshaft 6 is supported in a closed vessel by a main bearing 7a of a slip bearing integrally formed with a frame 7 and an auxiliary bearing 19 composed of the same slip bearing as the main bearing 7a. An eccentric part 6a is formed on the upper part of the crankshaft 6 and a compressing element part 3 compresses refrigerant gas by means of the eccentric rotation. A motor part 2 is placed between the main bearing 7a and the auxiliary bearing 19 so as to make the crankshaft 6 rotational. The auxiliary bearing 19 is formed annually and an inner surface 19a thereof has a curved surface like an inner surface of a torus, for instance, and is able to support the crankshaft 6 slidiably by this structure. By the inner surface 19a, the auxiliary bearing 19 has a self aligning function to support the crankshaft 6 even if the crankshaft 6 is inclined.

6. 发明专利

JPH08284857A ENCLOSED ROTARY COMPRESSOR 失效
公开(公告)号：JPH08284857A
公开(公告)日：1996-10-29
申请号：JP9106095
申请日：1995-04-17
申请人： HITACHI LTD
发明人： MISHINA MASATOSHI , ISHIYAMA AKIHIKO
IPC分类号： F04C18/356 , F25B31/02
摘要： PURPOSE: To perform the lubrication of a contact part between a roller in a cylinder chamber and a vane effectively and efficiently. CONSTITUTION: In a cylinder chamber 6a, a roller 9 is eccentrically rotated by an eccentric part of a crankshaft 5 so as to come into contact with a wall surface of this cylinder chamber 6a at one line (p). A vane 11 being pressed by a spring 10 comes into contact with this roller 9 at the tip, and the cylinder chamber 6a is partitioned off into a suction chamber and a compression space of refrigerant gas by this vane 11. In addition, an interconnecting means 18 is installed at the side of a top face 11a faced to a refrigerant gas suction port of the vane 11, and when the sliding direction of a contact part between the roller 9 and the vane 11 is reversed (for example, when a turning angle of the crankshaft 5 is 90 deg. to 270 deg.), the interconnecting means 18 interconnects a pump case 13 and the cylinder chamber 6a together, and thereby refrigerant machine oil is fed to the cylinder chamber 6a from this pump case 13.

7. 发明专利

JPH0828480A MULTICYLINDER ROTARY COMPRESSOR 失效
公开(公告)号：JPH0828480A
公开(公告)日：1996-01-30
申请号：JP16986894
申请日：1994-07-22
申请人： HITACHI LTD
发明人： MORITA KAZUNORI , HATAKE HIROAKI , ISHIYAMA AKIHIKO , MIYAMA JUNICHI
IPC分类号： F04C29/06
摘要： PURPOSE:To effectively realize decrease in noise as well as to decrease man- hours of the part processing of a compression mechanism part by using an existing space part as a resonance-type silencer on the way of a discharge path. CONSTITUTION:A multicylinder rotary compressor is provided with a discharge path 16 for communicating a main bearing 4, a first cylinder 5, a partition plate 6, a second cylinder 7, and a sub bearing 8 with one another, and on the way of this discharge path 16, a space part 18a near the bolt head part of a bolt hole and the discharge path 16 are communicated with each other by a passage 17-1 by using a bolt hole 18-1 of a clamping part of the main bearing 4 to the first cylinder 5 near the discharge path 16 in a space part independent from the discharge path 16. Or, the space part 18b and the discharge path 16 are communicated with each other by a passage 17-2 by using the bolt hole 18-2 of the second cylinder 7 near the discharge path 16.

8. 发明专利

JPH07229488A ROTARY COMPRESSOR 失效
公开(公告)号：JPH07229488A
公开(公告)日：1995-08-29
申请号：JP2102194
申请日：1994-02-18
申请人： HITACHI LTD
发明人： ISHIYAMA AKIHIKO , KAWASHIMA KENICHI , KOSOKABE HIROKATSU , NAKAJIMA SHOICHI , YAZAWA HIDEKI , HATAKE HIROAKI , IIZUKA TADASHI , SEKIGAMI KAZUO , SATO KOICHI
IPC分类号： F04C18/356 , F01C21/08 , F04C2/356
摘要： PURPOSE:To prevent any abnormal wear in a contact part between a roller and a vane, in this rotary compressor. CONSTITUTION:A turning shaft 26 has a decentered crank part 28, rotating a roller 38 eccentrically in a cylinder 32. A vane 140 slides in a groove installed in this cylinder 32 and comes into contact with a peripheral surface of the roller 38, forming a pressure chamber there, supporsing a turning angle of the roller 38 at a time when the vane is in a position starting its reciprocation is set to zero, a turning angle of the roller is somewhere about 90 to 270 degrees and thereby pressing force of the vane 140 against the roller 38 becomes maximized. At this time, a contact surface 140b of the vane 140 in contact with the roller is formed into a small surface or flat surface being small in curvature, while such a vane material as being lower in elastic modulus than a roller material and further high in self-lubricity is used. With this constitution, a Hertzian stress in a contact part between the vane and the roller is reducible, and also any abnormal wear in a roller outer diameter is preventable.

9. 发明专利

JPH04287876A CLOSED TYPE COMPRESSOR 失效
公开(公告)号：JPH04287876A
公开(公告)日：1992-10-13
申请号：JP5111191
申请日：1991-03-15
申请人： HITACHI LTD
发明人： ISHIYAMA AKIHIKO , ODAJIMA TAKESHI , IIZUKA TADASHI
IPC分类号： F04B39/00 , F04B39/02 , F04B39/12 , F25B31/00
摘要： PURPOSE:To provide a closed type compressor of high reliability and performance with the use of R134a refrigerant free from the risk of ozon destruction by providing a cooling means in refrigerator oil at the bottom part of a closed container so as to decrease discharge gas temperature and motor winding temperature more than the case of using R12 as refrigerant gas. CONSTITUTION:Refrigerant used for a closed type compressor is R134a, and as the cooling means thereof, an oil cooler 5 is equipped in a refrigerator oil 4 at the bottom part of a closed container 1. With the effect of this oil cooler 5, the discharge gas temperature and motor winding temperature are decreased by approximately 10 deg.C compared to the existing applied temperature. The degradation of the refrigerator oil 4 can be suppressed equally as in the case of the R12 refrigerant by cooling the R134a refrigerant. The extraction quantity of oligomer from the enamel wire 31 and insulating material 32 of a motor 3 can be suppressed to the present allowable extraction quantity or less by the effect of the oil cooler 5 so as to prevent the abnormal stop or the like of the compressor due to the deposition of oligomer on the sliding face.

10. 发明专利

JPH04187888A CLOSED TYPE MOTOR-DRIVEN COMPRESSOR 失效
公开(公告)号：JPH04187888A
公开(公告)日：1992-07-06
申请号：JP31404190
申请日：1990-11-21
申请人： HITACHI LTD
发明人： KONNO HAJIME , ISHIYAMA AKIHIKO
IPC分类号： F04C29/12 , F04C29/00 , F04C29/06
摘要： PURPOSE:To enhance performance and reliability while keeping cooling capacity with a simple constitution by forming a taper part at one end of a discharge connection pipe that has been fixed to a closed vessel so as to be closely fitted to the other open end of a discharge pipe. CONSTITUTION:High-temperature coolant gas compressed by a compression element 2 is introduced to the outside of a closed vessel 1 through a discharge pipe 12 that has been fixed to a discharge silencer 10 and through a discharge connection pipe 13 that has been fixed to the closed vessel 1. In this case, a taper part 13b is formed at one end of the discharge connection pipe 13, and thereto the other open end 12a' of the discharge pipe 12 is closely fitted. Thus, since the outflow of compressed high-temperature coolant gas into the inside of the closed vessel 1 can be prevented, the cooling capacity of the closed vessel 1 can be maintained, and the enhancement in performance and the reliability of the sliding parts and electric motor parts can be secured.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式