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    FOUR-WAY VALVE FOR REFRIGERATION CYCLE
    33.
    发明专利
    FOUR-WAY VALVE FOR REFRIGERATION CYCLE 失效

    公开(公告)号：JPS63145879A

    公开(公告)日：1988-06-17

    申请号：JP29187186

    申请日：1986-12-08

    Applicant: MATSUSHITA REFRIGERATION

    Inventor： ARAKI TOKINORI ,  ASADA MASAHARU ,  TANAKA YASUHIKO

    IPC: F16K11/065 ,  F16K11/07

    Abstract: PURPOSE:To simplify the structure and to improve the durability of a slide seat ring, by caulking the slide seat ring to a circular groove section communicated through a communication path with a low pressure zone. CONSTITUTION:A slider 28 containing a pair of slide valves 24, 25 being energized through a spring 29 against valve seats 19, 20 and forming a tunnel flow path is arranged between the valve seats 19, 20. The slide seats 26, 27 are caulked to circular groove sections 24a, 25a formed in the slide valve and paths 24d, 25d communicating with low pressure zone are communicated with the circular groove sections 24a, 25a. Since the bottom side of the caulked slide seat rings 26, 27 are maintained at low pressure, the slide seat rings 26, 27 are not removed from the caulked section.

    ROTARY COMPRESSOR
    34.
    发明专利
    ROTARY COMPRESSOR 失效

    公开(公告)号：JPS6238890A

    公开(公告)日：1987-02-19

    申请号：JP17664985

    申请日：1985-08-09

    Applicant: MATSUSHITA REFRIGERATION

    Inventor： TANAKA YASUHIKO

    IPC: F04C28/06 ,  F04C28/00

    Abstract: PURPOSE:To improve assembly work efficiency of suction and discharge valves of a tightly enclosed housing by incorporating a disk-like valve in a cylinder plate for simultaneously closing both a high pressure side inlet port and a low pressure side port with one side surface of the disk-like valve and closing the low pressure side port with the other side surface. CONSTITUTION:A high pressure side inlet port 72 always opens to a tightly enclosed housing 51 while a high pressure side outlet port 74 always communicates with an outlet pipe 64. A low pressure port 76 communicates wit a low pressure chamber 61 of a compression chamber 60 via a pressure introduction passage 79. In a valve cylinder 75 formed in a cylinder plate 57 is housed a disk-like high pressure valve 77 capable of simultaneously closing the high pressure side inlet port 72 and the low pressure port 76 by means of one side surface and closing the low pressure side port by means of the other side surface.

    ROTARY COMPRESSOR
    35.
    发明专利
    ROTARY COMPRESSOR 失效

    公开(公告)号：JPS61212685A

    公开(公告)日：1986-09-20

    申请号：JP5393985

    申请日：1985-03-18

    Applicant: MATSUSHITA REFRIGERATION

    Inventor： TANAKA YASUHIKO

    IPC: F04C28/06 ,  F04C23/02 ,  F04C29/00 ,  F04C29/06 ,  F04C29/12

    Abstract: PURPOSE:To achieve energy saving by providing disklike valves which close a high-pressure side outlet port and an inlet port on a side surface at the same time and on the other end side close a low-pressure port to a closed type compressor so as to interrupt the cooling medium passage at the time of the closed type compressor stoppage. CONSTITUTION:On a compressor side plate 55 of a closed type rotary compressor, a high-pressure side inlet port 72 which introduces high pressure contained inside a closed vessel and a high-presure side outlet port 74 which introduces the high pressure into a refrigerating cycle are formed, and further both ports are so constituted that these are opened or closed by a high-pressure valve 77 at the same time. Since the back side portion of the high-pressure valve 77 is connected to the downstream side of a suction valve 66, the high-pressure valve opens by the negative pressure of low-pressure side at the starting time of compressor. And, when the compressor is stopped, the high-pressure valve is closed by the increase of pressure at the low-pressure side, and the cooling medium passage is interrupted from the refrigerating cycle.

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