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41. 发明专利

JPS6410675B2 失效
公开(公告)号：JPS6410675B2
公开(公告)日：1989-02-22
申请号：JP3877781
申请日：1981-03-19
申请人： HITACHI LTD
发明人： UCHIKAWA NAOSHI , MURAYAMA AKIRA , KOTANI SUMIHISA , ARATA TETSUYA , TOMITA YOSHIKATSU , SUEFUJI KAZUTAKA
IPC分类号： F04C18/02 , F04C29/04

42. 发明专利

JPS6397894A TIGHTLY CLOSED SCROLL COMPRESSOR 失效
公开(公告)号：JPS6397894A
公开(公告)日：1988-04-28
申请号：JP24297786
申请日：1986-10-15
申请人： HITACHI LTD
发明人： SHIIBAYASHI MASAO , SUEFUJI KAZUTAKA , CHIAKI TAKAO , TOMITA YOSHIKATSU
IPC分类号： F04C29/02 , F04B39/04
摘要： PURPOSE:To reduce an oil rising amount by extending the gas inflow port side of a discharge pipe to the neighborhood of the rotor upper end of a motor part and turning the gas inflow port in the same direction as the rotor rotation direction so as to promote oil separation action in a tightly closed container. CONSTITUTION:An upper chamber 1a in a tightly closed container 1 where a discharge port 7 is opened is communicated with an upper motor chamber 1b through passage 14a and 14b. This upper motor chamber 1b is communicated with a lower motor chamber 1c through a passage 15 between a stator 3b and the side wall of the tightly closed container 1. At a position opposite to the passages 14a and 14b of the upper motor chamber 1b, a discharge pipe 16 which pierces the tightly closed container 1 is provided, and its gas inflow port 16a side is extended to the neighborhood the upper end of a rotor 3a and the gas inflow port 16a is turned in the same direction as the rotation direction of the rotor 3a. By this, separated oil does not flow into the discharge pipe 16, oil separation action is promoted and oil rising amount can be reduced.

43. 发明专利

JPS6244110B2 失效
公开(公告)号：JPS6244110B2
公开(公告)日：1987-09-18
申请号：JP9169880
申请日：1980-07-07
申请人： HITACHI LTD
发明人： NAKAYAMA SUSUMU , ARATA TETSUYA , TOMITA YOSHIKATSU , MURAYAMA AKIRA
IPC分类号： F04B39/04 , F04B39/16

44. 发明专利

JPS61213556A METHOD OF STARTING COMPRESSION TYPE REFRIGERATOR 失效
公开(公告)号：JPS61213556A
公开(公告)日：1986-09-22
申请号：JP5447985
申请日：1985-03-20
申请人： HITACHI LTD
发明人： SUEFUJI KAZUTAKA , KIKUCHI KATSUAKI , ARATA TETSUYA , TOMITA YOSHIKATSU , SHIIBAYASHI MASAO , KOKUNI KENSAKU
IPC分类号： F25B1/00 , F04C18/02 , F04C28/06 , F25B1/04

45. 发明专利

JPS6198990A Scroll fluid machine for vacuum pump 失效
标题翻译：用于真空泵的滚动流体机
公开(公告)号：JPS6198990A
公开(公告)日：1986-05-17
申请号：JP21833384
申请日：1984-10-19
申请人： Hitachi Ltd
发明人： MIZUNO TAKAO , TOMITA YOSHIKATSU , KUNO HIROAKI , UCHIKAWA NAOSHI , MURAYAMA AKIRA , TAMURA TAKAHIRO
IPC分类号： F04C18/02 , F04C25/02 , F04C27/00
CPC分类号： F04C27/005
摘要： PURPOSE: To enable a machine to sufficiently hold its sealing in the axial direction over the range from the atmospheric pressure to a high vacuum, by providing a communication port which connects a space, connected with a delivery port, with a back pressure chamber at the moment a volute center space, connected with the delivery port, communicates with a minimum enclosed space.
CONSTITUTION: A machine, providing a communication port 21 with a throttle mechanism connecting with a back pressure chamber 20 a space connected with a delivery port 17, provides this communication port 21 in a position that it connects the space with the chamber 20 at the moment the volute center space 22 connected with the delivery port 17 communicates with a minimum enclosed space 23. In this way, fluid in the volute center space 22 and the space connected with the delivery port 17 is not delivered being reexpanded in the minimum enclosed space 23 by the turning action of a turning scroll 11, and the machine delivers a part of the fluid being recompressed while repeats reexpansion of a part of the fluid. Here an outflow and an inflow of the fluid are provided by the communication port 21, but the machine, maintaining the back pressure chamber 20 to a mean pressure in the space connected with the delivery port 17 by the throttle mechanism and pressing the turning scroll 11 to a fixed scroll 12, is enabled to hold the sealing in the axial direction.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：为了使机器能够在大气压到高真空的范围内在轴向方向上充分保持其密封，通过提供连接与输送口连接的空间的通信口与背压室与输送口连接的蜗壳中心空间与最小封闭空间通信。构成：提供具有与后压室20连接的节流机构的通信端口21与与输送端口17连接的空间，该通信端口21将该通信端口21在此时与室20连接的位置与输送口17连接的蜗壳中心空间22与最小封闭空间23连通。这样，蜗壳中心空间22中的流体和与输送口17连接的空间不被输送再次膨胀在最小封闭空间23中通过转动涡卷11的转动动作，并且机器输送一部分待再压缩的流体，同时重复流体的一部分的再膨胀。这里，流体的流出和流入由连通口21提供，而机器通过节流机构将背压室20保持在与输送口17连接的空间中的平均压力，并按压转动涡旋件11 固定涡卷12能够沿轴向保持密封。

46. 发明专利

JPS58135393A MOTOR DRIVEN COMPRESSOR 失效
公开(公告)号：JPS58135393A
公开(公告)日：1983-08-11
申请号：JP1743782
申请日：1982-02-08
申请人： HITACHI LTD
发明人： MURAYAMA AKIRA , KUNO HIROAKI , UCHIKAWA NAOSHI , TAMURA TAKAHIRO , MIZUNO TAKAO , TOMITA YOSHIKATSU
IPC分类号： F01C1/02 , F04C18/02
摘要： PURPOSE:To reduce pressure loss at the time of discharge stroke of a compressor and to prevent over-compression of a fluid, by employing such a mechanism that a smallest enclosed space is communicated with discharge passages promptly when the compression stroke is terminated. CONSTITUTION:In an end plate of a fixed scroll of a motor driven compressor having a scroll compression mechanism, there is formed a discharge passage 101 which comes near to the outer line 100 of a lap of a revolving scroll at the end of the compression stroke of the compressor, i.e., at the position where laps 10, 13 come into contact with each other at their volute tongue portions 33, 34 and a smallest enclosed space is formed therebetween. When the revolving scroll revolves further, the volute tongue portions 33, 34 are moved away from the inner wall surfaces 37, 36 of the mating laps and discharge passages 102, 103 are formed between the laps 10 and 13, so that gas in compression chambers 31, 32 is discharged into a discharge chamber 35. At the same time, the outer line 100 is moved across the passage 101 and the compression chamber 31 is communicated directly with a section A of the passage 101. Therefore, the communication between the compression chamber 31 and the discharge passage 101 is established promptly and a sufficient area of gas passage can be obtained.

47. 发明专利

JPS57140588A SCROLL COMPRESSOR 失效
公开(公告)号：JPS57140588A
公开(公告)日：1982-08-31
申请号：JP2428381
申请日：1981-02-23
申请人： HITACHI LTD
发明人： TOMITA YOSHIKATSU , ARATA TETSUYA , KOTANI SUMIHISA , SUEFUJI KAZUTAKA , UCHIKAWA NAOSHI , MURAYAMA AKIRA
IPC分类号： F04C18/02 , F04C18/04 , F04C28/16
摘要： PURPOSE:To control the capacity of a compressor, by providing a slide valve in the wall of a fixed scroll on a suction space so that the slide valve is brought into pressure contact with a rotary scroll to shut off a part of the suction space. CONSTITUTION:A slide valve 21 is provided in the wall of a fixed scroll 7 on a suction space 20 defined by the scroll, so that the slide valve is located near a suction pipe 11. When gas pressure has acted on the rear of the piston 21b of the slide valve 21, the valve is pushed into contact with the outside wall 5 of the lappig part of a rotary scroll 5. The valve 21 slides in a valve chamber 22 so that the end face 21a' of the sliding plate 21a of the valve always slides on the outside wall 5' of the lapping part of the rotary scroll 5. Therefore, the suction chamber 20 is shut off halfway so that no sucked gas flows into a suction space section 20'. As a result, controlled-capacity operation under 50% of full load is effected.

48. 发明专利

JPS57131896A SCROLL COMPRESSOR 失效
公开(公告)号：JPS57131896A
公开(公告)日：1982-08-14
申请号：JP1700081
申请日：1981-02-09
申请人： HITACHI LTD
发明人： ARATA TETSUYA , TOMITA YOSHIKATSU , ARAI TOORU , TOUJIYOU KENJI , TAKAHASHI MINEO
IPC分类号： F04C18/02 , F01C1/02 , F04C29/00
摘要： PURPOSE:To improve performance of a compresor, by removing moment conventionally caused in a turning scroll, that is, by applying a load to the eccentric part of a crankshaft, inserted into the turning scroll, at the position of a working point of the radial load. CONSTITUTION:A crankshaft 4 is supported by a main bearing 5a and a lower bearing 7c formed to a fixed scroll 7, and an eccentric shaft part 4a is formed in the crankshaft 4, inserted into and arranged in a boss part 6c protrusively provided in the center portion of a turning scroll 6. If a radial load point F by compressed gas is represented by the lap center (a), a load point applied to the eccentric shaft part 4a of the crankshaft becomes a point (b). In this way, insertion of the eccentric shaft part 4a into the turning scroll 6 can obtain alignment of the load point (a) to the supporting point (b), then conventionally generated moment in the turning scroll 6 is eliminated, further a sealing effect of a compression chamber and suction chamber 15 with an intermediate chamber 10 can be improved, thus performance of a compressor can be improved.

49. 发明专利

JPS56156490A ENCLOSED SCROLL COMPRESSOR 失效
公开(公告)号：JPS56156490A
公开(公告)日：1981-12-03
申请号：JP5871780
申请日：1980-05-06
申请人： HITACHI LTD
发明人： ARATA TETSUYA , TOMITA YOSHIKATSU , TOUJIYOU KENJI
IPC分类号： F04C2/02 , F04C2/04 , F04C18/02 , F04C18/04
摘要： PURPOSE:To improve the seal and compression performance by providing an oil groove along the lap shape on the thrust face at the lap section then providing an oil supply hole penetrating through a plane section and the lap section. CONSTITUTION:An oil groove 16b is provided along the lap shape on the thrust face at the lap section 6b, while an oil supply hole 16a opening to the oil groove 16b is made through a plane section 6a and the lap section 6b. Since the oil can be supplied positively to the tip of lap which is the seal section between compression chambers and a sliding section thus to perform the sealing between the compression chambers and the lubrication at the lap section, the sealing and compression performances can be improved.

50. 发明专利

JPS56151848A SUPERCHARGER FOR RECIPROCATING COMPRESSOR 失效
公开(公告)号：JPS56151848A
公开(公告)日：1981-11-25
申请号：JP5436880
申请日：1980-04-25
申请人： HITACHI LTD
发明人： MURAYAMA AKIRA , HAEDA YOSHIO , TOMITA YOSHIKATSU , ARATA TETSUYA , NAKAYAMA SUSUMU , URASHIN MASAYUKI , SUEFUJI KAZUTAKA , HARADA FUMIO
IPC分类号： F04B49/00 , F25B1/02

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