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公开(公告)号：JPH05141356A
公开(公告)日：1993-06-08
申请号：JP30161091
申请日：1991-11-18
Applicant: MATSUSHITA REFRIGERATION
Inventor： MANGYO MASAO , KAWAI HIDEKI , SAEKI YUJI , WADA SATOSHI , OZAKA MASAHIKO
IPC: F04B39/00
Abstract: PURPOSE:To provide a compressor wherein efficiency is stabilized through stabilization of the size of a gap between a stator and a rotor and there is no need for a different part, except a block, in order to contain a rolling bearing (a ball bearing or a roller bearing). CONSTITUTION:A crank shaft 24, a ball bearing 25a by which a the crank shaft is axially supported, and a block 26 by which the bearing is supported are provided. The block is a bowl-form iron plate molded product or cast iron casting and provided at its central part with a bearing holding part 27. Further, the crank shaft 24 forms straddle mounted structure by means of other bearing holding part 30 and other rolling bearing.
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公开(公告)号：JPH04321780A
公开(公告)日：1992-11-11
申请号：JP9051191
申请日：1991-04-22
Applicant: MATSUSHITA REFRIGERATION
Inventor： KAWAI HIDEKI , WADA SATOSHI , OZAKA MASAHIKO
Abstract: PURPOSE:To provide a bearing of low loss and high reliability that can not be obtained through conventional sliding bearings in a closed type compressor used in a refrigerator or the like. CONSTITUTION:A closed type compressor comprises two ball bearings 7 and 8 positioned at locations holding the eccentric shaft 9 of a crank shaft 6 and a communicating passage 11 communicating their respective communicating passage 11a and 11b provided above the aforementioned ball bearings and an oil supplying pipe 10.
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公开(公告)号：JPH04237886A
公开(公告)日：1992-08-26
申请号：JP559391
申请日：1991-01-22
Applicant: MATSUSHITA REFRIGERATION
Inventor： WADA SATOSHI , KAWAI HIDEKI , OZAKA MASAHIKO
Abstract: PURPOSE:To facilitate a job for assembly operability and working properties by improving the life and reliability of a ball bearing in the case where it is used, while promoting the stabilization of motor efficiency, and assembling a connecting rod without splitting it, in such a case pertaining to the promotion of efficiency in an enclosed motor compressor available for a refrigerator, etc. CONSTITUTION:This compressor consists of a crankshaft 20, frames 20a, 20b of this crankshaft 20, an eccentric part 21 pressed in the crankshaft 20, and a ball bearing 24 installed more at the side of a motor element 2 than at the axis of a cylinder 13.
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公开(公告)号：JPH04187885A
公开(公告)日：1992-07-06
申请号：JP31908990
申请日：1990-11-21
Applicant: MATSUSHITA REFRIGERATION
Inventor： KAWAI HIDEKI
Abstract: PURPOSE:To prevent abrasion of shaft and bearing by forming a compression chamber of a compression machine portion driven by an electric motor portion with bearings, a cylinder, a roller and a vane, and providing a conduit pipe communicating to a delivery hole and the shaft sliding surface of the bearing. CONSTITUTION:One end of a shaft 13, which is supported with bearings 50, 51, of a refrigerant pump 53 is pressed into the bearing 51 and secured thereto while the other end is opened to the inside of a delivery pipe 6, and a conduit pipe 52 communicating to a delivery hole 19 is provided. The return liquid refrigerant from an air conditioning system passes through a suction pipe, delivered into a closed container 2, stirred, flows into a compression chamber 14 of a cylinder 16 through a suction hole and pressurized inside the compression chamber 14 by means of the rotation of a roller 17. The refrigerant liquid thus pressurized passes through the delivery hole 19 and some to the exterior of a refrigerant pump 53 through the delivery pipe 6 while some of the other is sent to the sliding surface of shafts 13, 13a through the conduit pipe 52 communicating to the shaft sliding surface of the bearing and the sliding surface of the shafts 13, 13a are lubricated with the refrigerant liquid.
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公开(公告)号：JPH04187884A
公开(公告)日：1992-07-06
申请号：JP31908890
申请日：1990-11-21
Applicant: MATSUSHITA REFRIGERATION
Inventor： AWASHIMA HIROKI , KAWAI HIDEKI
Abstract: PURPOSE:To improve the reliability by equipping inside a closed container an electric motor, a compression machine, a suction pipe communicating to a cylinder of the compression machine portion and a delivery pipe secured to the closed container, and providing a delivery hole of the compression machine portion on two places, one on the electric motor and one on the opposite side of the electric motor. CONSTITUTION:An end portion 32a of a suction pipe 32 of a refrigerant pump 31 is pressed directly into a suction hole 15, formed on a cylinder 16, passing through an end shell 8. Delivery holes 34, 35, for the compressed liquid refrigerant supplied from the compression machine portion are provided at two places, one on an electric motor side and the other on the opposite side of the electric motor, respectively. Liquid refrigerant from an air conditioning system passes through the suction pipe 32, flows directly into the suction hole 15 of the cylinder 16 and enters a compression chamber thereby possibility of sucking impurities and abrasion powders into the closed container 2 is nil. Because two delivery holes 34, 35 are provided on the electric motor side and on the opposite side of the electric motor, respectively, both without applying any delivery valve, the liquid refrigerant, when compressed in the compression machine portion, is easily delivered to the outside of the compression chamber and chances of generating over-compression will not occur whereby electric motor load increase will not take place.
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Patent Agency Ranking
公开(公告)号：JPH04124492A
公开(公告)日：1992-04-24
申请号：JP24772390
申请日：1990-09-17
Applicant: MATSUSHITA REFRIGERATION
Inventor： MATSUMOTO TAKESHI , KAWAI HIDEKI , NISHIHARA HIDETOSHI , OTA TOSHIHIKO , OZAKA MASAHIKO
IPC: F04C29/02
Abstract: PURPOSE:To obtain a highly reliable compressor prevented from the deformation of an auxiliary side housing by fitting a discharge cover with play to the boss part outer diameter of the auxiliary side housing, and making the outer diameter of the support part of an oil pipe larger than that of the boss part. CONSTITUTION:An auxiliary side housing 19 is formed of a flange part 19a closing the end face of a cylinder 5 by one side face thereof while being provided with a delivery valve 20 on the opposite face, and a boss part 19d provided with a boss peripheral part 19b and a boss end face part 19c while having a bearing part extended on the opposite face side. A partition plate 21 and a discharge cover 22 are overlapped and fitted with play to the boss peripheral part 19b. An oil pipe 23 is provided with an oil feed spring 24 enclosed therein, and one end of the oil pipe 23 is communicated into oil, while the other end is provided with a support part 25 rigidly fixed thereto. The support 25 is fixed to the boss end face part 19c by a bolt 26, and its outer diameter juts out from the outer diameter of the boss peripheral part 19b. Since unnecessary force is not applied to the auxiliary side housing, the generation of distortion is prevented, and thus a highly reliable rotary compressor can be obtained.
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公开(公告)号：JPH04101099A
公开(公告)日：1992-04-02
申请号：JP21931690
申请日：1990-08-20
Applicant: MATSUSHITA REFRIGERATION
Inventor： MATSUMOTO TAKESHI , KAWAI HIDEKI , NISHIHARA HIDETOSHI , OTA TOSHIHIKO , OZAKA MASAHIKO
Abstract: PURPOSE:To enable the undeformable fixing of an auxiliary side housing by fixing a support part, provided at one end of an oil pipe with the other end thereof opened into oil in a closed container, to the end face of the auxiliary side housing by a bolt together with a discharge cover so as to cover a delivery valve. CONSTITUTION:A rotary compressor is formed by enclosing a motor M formed of a stator 2 and a rotor 3, and a compression device C driven by this motor M into an approximately cylindrical closed container long in the lateral direction, and the compression device C is provided with a compression chamber 8 partitioned by a cylinder 5 and a main and an auxiliary side housings 6, 19. In this case, there are provided a partition plate 20 and a discharge cover 21 that are mutually overlapped, and these are fixedly fitted to the protruding part outer periphery 19a of the auxiliary side housing 19. An oil pipe 15 is formed by providing a support 22 rigidly fixed to one end thereof, and this support 22 is fixed to the protruding part end face 19b of the auxiliary side housing 19 by a bolt 23.
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公开(公告)号：JPH03258990A
公开(公告)日：1991-11-19
申请号：JP5528390
申请日：1990-03-06
Applicant: MATSUSHITA REFRIGERATION
Inventor： OTA TOSHIHIKO , KAWAI HIDEKI , NISHIHARA HIDETOSHI , MATSUMOTO TAKESHI
Abstract: PURPOSE:To eliminate the whirling of a crankshaft and reduce the noise by providing a crankshaft formed of an outer shell part having an axial directional through hole and an eccentric part, and a shaft center part formed of a material having a Young's modulus higher than that of the outer shell part. CONSTITUTION:A crankshaft 13 is formed of an outer shell part 14 and a shaft center part 16. The outer shell part 14 has an eccentric part 15 and an axial directional through hole 17, and it is formed of cast iron. The shaft center part 16 is formed of a material of Young's modulus higher than that of the outer shell part 14 fitted into the through hole 17 by shrinkage fitting. Even if the unbalance and magnetic center dislocation of an electric element 2 occur at the time of operation of a compressor, the crankshaft 3 is never whirled as the rigidity of the crankshaft 3 is high. As the highly workable cast iron material is used for the outer shell part 14 in the processing of the crankshaft 3, mass-productivity is improved.
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公开(公告)号：JPH03189395A
公开(公告)日：1991-08-19
申请号：JP32795089
申请日：1989-12-18
Applicant: MATSUSHITA REFRIGERATION
Inventor： OZAKA MASAHIKO , KAWAI HIDEKI , NISHIHARA HIDETOSHI , ARIMIZU KOJI , SAEKI YUJI
Abstract: PURPOSE:To provide an effect to reduce the generation of noise and an input by providing a communicating passage, having the one end opened in a compression chamber and the other end opened in a vane groove, in the vicinity of a vane on the compression chamber side on the high pressure side. CONSTITUTION:Pressure pulsation generated in a compression chamber 6 due to re- expansion by a delivery notch part 14 and a delivery hole 15 is reduced end offset in a way that pressure pulsation is generated through re-expansion of a communicating passage 17. Further, freezer oil present in the compression chamber 6 flows in the passage 17, and an amount of delivered freezer oil is reduced to reduce opportunity of collision of freezer oil. Since along with rotation of a crank shaft 4, the back pressure of refrigerant gas is exerted on freezer oil of which the passage 17 is full right after the starting of delivery, the freezer oil gradually flows out through an opening part on the vane groove 8 side of the passage 17. Further, by applying a side pressure on a vane 9 through the opening part on the groove 8 side of the passage 17, the vane 9 is prevented from the occurrence of metallic contact at an edge part 18a on the high pressure side on the opposition roller side and an edge part 18b on the low pressure side on the roller side of the groove 8, and the vane 9 is pressed against the surface on the low pressure side of the groove 8.
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公开(公告)号：JPH03175194A
公开(公告)日：1991-07-30
申请号：JP31615489
申请日：1989-12-05
Applicant: MATSUSHITA REFRIGERATION
Inventor： OZAKA MASAHIKO , KAWAI HIDEKI , NISHIHARA HIDETOSHI , SAEKI YUJI , OTA TOSHIHIKO , ARIMIZU KOJI
Abstract: PURPOSE:To improve refrigerating capacity and performance index by providing a heat pipe of which one end is inserted into at least one of a cylinder, a rotor side housing, or an anti-rotor side housing, and the other end is exposed outside an enclosed vessel. CONSTITUTION:One end of a heat pipe 19 is inserted into the inserting hole 16 of a cylinder 19, and the other end is exposed outside an enclosed vessel 17. The enclosed vessel 17 and the heat pipe 19 are connected with each other airtightly and contactedly, the inside and the outside of the enclosed vessel 17 are fluidly distinguished from each other, and further thermal refrigerant fluid is enclosed in the heat pipe 19. In such constitution, at operating an enclosed type compressor, heat exchange such that the thermal refrigerant fluid in the heat pipe 19 absorbs heat from the atmosphere 1a within the enclosed vessel 17 and from a compression mechanism part 4 especially a compression chamber 5, and releases the heat outside the enclosed vessel 17, can be performed with large cooling effect by utilizing natural convection. Consequently, by reducing receiving loss of heat of refrigerant in the compression chamber 5, refrigerating capacity is improved and performance index is hightened.
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