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1. 发明专利

JPH09292167A ACCUMULATOR 失效
公开(公告)号：JPH09292167A
公开(公告)日：1997-11-11
申请号：JP10735996
申请日：1996-04-26
申请人： MITSUBISHI ELECTRIC CORP
发明人： KODA TOSHIHIDE , SHIMOJI MIHOKO , SUGIHARA MASAHIRO , TANAKA NAOKI , IIJIMA HITOSHI , IZAWA TAKESHI , TOYOSHIMA MASAKI
IPC分类号： F25B43/02 , F25B43/00
摘要： PROBLEM TO BE SOLVED: To provide an accumulator for refrigerating air conditioning circuit capable of securing the required flow rate of the refrigerating machine oil without realizing the excessive flow rate of the flowing-out liquid refrigerant to any liquid level. SOLUTION: The refrigerant circulating a refrigerating air conditioning circuit is introduced from a suction pipe 2, and the refrigerant and the refrigerating machine oil contained therein flows into an oil collection pipe 4 through a plurality of oil collection holes 4a-4h provided in the oil collection pipe 4 to be held in a closed container 1 in the vertical direction. A refrigerant flow passage which is provided in the vicinity of a lowest oil collection hole 4a of the oil collection pipe 4 or on the downstream side thereof, and guided from communication ports 3b, 4i to be communicated with the oil collection pipe 4 and a discharge pipe 3 to the discharge pipe 3 is constituted.

4. 发明专利

JPH0245673A SCROLL COMPRESSOR 失效
公开(公告)号：JPH0245673A
公开(公告)日：1990-02-15
申请号：JP19686688
申请日：1988-08-06
申请人： MITSUBISHI ELECTRIC CORP
发明人： OIDE MASAHIKO , SUZUKI YASUYUKI , SUGIHARA MASAHIRO
IPC分类号： F04C28/26 , F04C18/02
摘要： PURPOSE:To smoothly perform the transfer to a full-load operation by forming a clearance area, generated between a bypass valve peripheral part and a valve seat space boundary peripheral part, smaller than a flow path area of a pressure pipe connected to valve seat space. CONSTITUTION:A pressure pipe 26, selectably introducing suction and delivery pressures, is connected to valve seat space 24. A circular annular area A1, formed between the peripheral part of a bypass valve 22 and the boundary peripheral part of the valve seat space 24, is formed sufficiently smaller as compared with a flow path sectional area A2 of the pressure pipe 26. In this way, a pressure loss, generated between the bypass valve 22 and the valve seat space 24, is increased as large as possible. As a result, a differential pressure between the upper and bottom of the bypass valve 22 is effectively generated, smoothly performing its closing action, and a transfer is smoothly performed of an operative condition from unloading to full loading.

7. 发明专利

JPH0219680A SCROLL COMPRESSOR 失效
公开(公告)号：JPH0219680A
公开(公告)日：1990-01-23
申请号：JP16841788
申请日：1988-07-06
申请人： MITSUBISHI ELECTRIC CORP
发明人： MATSUKI TETSUZO , YAMASHIRO YOSHIHIRO , SUGIHARA MASAHIRO
IPC分类号： F04C18/02
摘要： PURPOSE:To prevent burning at the bearing sliding section by positioning the central axis of a compression mechanism assembly eccentrically above the central axis of a shell. CONSTITUTION:An oil sump 52 is arranged on the bottom of a shell 51. A compression mechanism assembly 53 comprising a fixed scroll 54 and a rolling scroll 55 combined eccentrically and a stator motor 56 and a motor rotor 57 for driving the rolling scroll 55 is arranged in the shell 51. When the central axis A of the compression mechanism assembly A is positioned vertically above the central axis B of the shell 51, an oil sump 52 having wide space can be formed below the compression mechanism assembly 53. Since sufficient lubricant can be stored in the oil sump 52, the bearing section can be protected from burning due to lowering of viscosity of the lubricant caused by dissolution of refrigerant into the lubricant.

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