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41. 发明专利

JPH0921391A SCROLL COMPRESSOR 失效
公开(公告)号：JPH0921391A
公开(公告)日：1997-01-21
申请号：JP16998495
申请日：1995-07-05
申请人： MITSUBISHI HEAVY IND LTD
发明人： SATO KAZUHIRO , SEKIDA MASUMI , NAGATO YUKIO , TAKEDA KIMIATSU
IPC分类号： F04C27/00 , F04C2/32 , F04C18/02 , F04C28/06 , F04C28/28 , F04C29/02
摘要： PROBLEM TO BE SOLVED: To block the reverse flow so as to raise the oil pressure of an oil feeding pump, and to suppress the reverse rotation of the oil feeding pump by the oil pressure, by providing a check valve to block the flowing of the oil in the reverse direction to the suction direction, at the suction part of a displacement type oil feeding pump. SOLUTION: At the lower side of a cover plate 75, a suction pipe 88 to connect to a suction hole 82 is provided, and a check valve 89 is provided in the suction pipe 88. The suction pipe 88 sucks the lubricating oil OIL stored at the inner bottom part of an enclosed housing 31. The check valve 89 blocks the flow of the oil reverse to the oil flow when an oil pump P is operated in the rotation of the regular direction. That is, the flowing of the lubricating oil OIL inside a cylinder chamber 72 discharged to the inside of the housing 31 passing through the suction pipe 88, operated by the reverse rotation of a driving shaft 35 is blocked. Consequently, the oil pressure in the oil feeding pump P is raised, and the reverse rotation of the oil feeding pump P is suppressed by the raised oil pressure, so as to suppress the reverse rotation of the driving shaft 35.

42. 发明专利

JPH0763428A REFRIGERATION CYCLE APPARATUS 失效
公开(公告)号：JPH0763428A
公开(公告)日：1995-03-10
申请号：JP21399093
申请日：1993-08-30
申请人： MITSUBISHI HEAVY IND LTD
发明人： TAKEDA KIMIATSU , UKAI TETSUZO , SUZUKI KAZUHIRO , SATO KAZUHIRO
IPC分类号： F04B49/00 , F04B49/06 , F04C18/02 , F04C28/06 , F25B1/00 , F25B49/02
摘要： PURPOSE:To provide a device for a refrigeration cycle which frees the operation from a lag in the closing of a check valve, an attachment for the compressor part, which has been a cause of reversed running. CONSTITUTION:In a control part 70 there are provided a circuit for increasing the number of revolutions which, when the operation of the refrigeration cycle is stopped, increases the number of revolutions of the compressor 1a and a circuit for stopping the operation which, after this operation of the compressor 1a for a prescribed period of time, stops the apparatus from operating. As a result, when the apparatus stops working, the differential pressure Pd-Po between the two sides of the valve body of the check valve 42 is made so large as to exceed a certain differential pressure which is enough to actuate the check valve 42, which is of the free type, so that as the operation of the compressor 1a stops, the valve body 63 of the check valve 42, its motive force outbalancing the cohesion of the oil, is made to positively turn toward closure.

43. 发明专利

JPH0650637A ACCUMULATOR HAVING FOUR-WAY VALVE STORED THEREIN 失效
公开(公告)号：JPH0650637A
公开(公告)日：1994-02-25
申请号：JP22646992
申请日：1992-08-03
申请人： MITSUBISHI HEAVY IND LTD
发明人： TOMIMASU KAZUHIRO , KANNOU TATSUZOU , SATO KAZUHIRO , FUJIKI HIRONARI
IPC分类号： F25B41/04 , F25B43/00
摘要： PURPOSE:To provide a freezer device in which radiation sound discharged from a main body of a four-way valve is reduced, its vibration is prevented from being transmitted to other members and a positional accuracy at a brazed part of a pipe is improved. CONSTITUTION:A freezer device is provided with a four-way valve for changing over a flow direction of refrigerant. An accumulator is installed at the suction side of a compressor. At least a main body part 7 of the four-way valve is mounted within the accumulator.

44. 发明专利

JPH05332254A INSTALLATION DEVICE FOR HORIZONTAL TYPE COMPRESESSOR 失效
公开(公告)号：JPH05332254A
公开(公告)日：1993-12-14
申请号：JP13692892
申请日：1992-05-28
申请人： MITSUBISHI HEAVY IND LTD
发明人： SATO KAZUHIRO , IWATA HISAO , KATO TADAHIRO
IPC分类号： F04B39/00 , F16F15/08
摘要： PURPOSE:To prevent propagation of vibration, to reduce the generation of noise emitted from a compressor mounting member, to facilitate an installation work through reduction of the number of parts, and to reduce a cost. CONSTITUTION:A belt-like soundproof vibrationproof member 5 is formed such that a vibration insulating member 7 of a resilient substance having a protrusion 71 fronting on an installation surface 1 and a noise absorbing member 6 are integrally laminated together. The belt-like part of the soundproof vibrationproof member 5 is wound around the drum part of a compressor 2, and the end part thereof is fixed on a mounting surface 1 by means of a bolt 13 and a nut 14.

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