Valve device of compressor, and sealed compressor including valve device

Abstract

A valve device of a compressor of the present invention comprises a plate ( 17 ), a reed ( 21, 75 ), and a stopper ( 31 ), wherein the reed includes: an opening/closing section ( 60, 70 ), a fastened section ( 61, 71 ); and a joining section ( 62, 72 ), the opening/closing section, the fastened section and the joining section being arranged in a direction in which a symmetric axis extends; wherein in a portion of the joining section which is closer to the opening/closing section, a pair of portions ( 102, 112, 82, 86 ) of an outer periphery of each of one or two openings ( 63, 65, 73, 77 ) which are closest to both ends of the joining section are symmetric with respect to the symmetric axis so as to form a substantially-V-shape or substantially-U-shape, in a direction from the opening/closing section toward the fastened section; and in a portion of the joining section which is closer to the fastened section, a pair of portions ( 103, 113, 83, 87 ) of the outer periphery of each of one or two openings which are closest to the both ends of the joining section are symmetric with respect to the symmetric axis so as to form a substantially-V-shape or substantially-U-shape, in a direction from the fastened section toward the opening/closing section.

1 . A valve device of a compressor, comprising:
 a plate having a communication hole communicated with a compression chamber within which a piston is reciprocatable;   a plate-shaped reed for opening and closing the communication hole; and   a stopper which is disposed to cover the reed and defines an opening degree of the reed;   wherein the reed includes:   an opening/closing section positioned on an opening of the communication hole;   a fastened section fastened to the plate; and   a joining section for joining the opening/closing section to the fastened section, the joining section having one or two openings, the opening/closing section, the fastened section and the joining section being arranged in a direction in which a symmetric axis extends;   wherein in a portion of the joining section which is closer to the opening/closing section, a pair of portions (hereinafter will be referred to as first outer peripheral portions) of an outer periphery of each of one or two openings which are closest to both ends of the joining section are symmetric with respect to the symmetric axis so as to form a substantially-V-shape or substantially-U-shape, in a direction from the opening/closing section toward the fastened section; and   in a portion of the joining section which is closer to the fastened section, a pair of portions (hereinafter will be referred to as second outer peripheral portions) of the outer periphery of each of one or two openings which are closest to the both ends of the joining section are symmetric with respect to the symmetric axis so as to form a substantially-V-shape or substantially-U-shape, in a direction from the fastened section toward the opening/closing section.   
     
     
         2 . The valve device of the compressor according to  claim 1 ,
 wherein the pair of first outer peripheral portions and the pair of second outer peripheral portions are portions of the outer periphery of one opening extending to cross the symmetric axis, or are respectively portions of outer peripheries of two openings extending to cross the symmetric axis.   
     
     
         3 . The valve device of the compressor according to  claim 2 ,
 wherein the opening is a wide hole in which the outer periphery of the opening includes the pair of first outer peripheral portions and portions extending toward the pair of first outer peripheral portions such that the portions are symmetric with respect to the symmetric axis so as to form a substantially-V-shape or substantially-U-shape,   the outer periphery of the opening includes the pair of second outer peripheral portions and portions extending toward the pair of second outer peripheral portions such that the portions are symmetric with respect to the symmetric axis so as to form a substantially-V-shape or substantially-U-shape, or   the outer periphery of the opening includes the pair of first outer peripheral portions and the pair of second outer peripheral portions.   
     
     
         4 . The valve device of the compressor according to  claim 2 ,
 wherein the opening is a narrow hole in which the outer periphery of the opening includes the pair of first outer peripheral portions and a portion extending in parallel with the pair of first outer peripheral portions, and/or the pair of second outer peripheral portions and a portion extending in parallel with the pair of second outer peripheral portions.   
     
     
         5 . The valve device of the compressor according to  claim 4 ,
 wherein the narrow hole has a shape in which a portion which is closer to the opening/closing section extends to cross the symmetric axis, and   a tongue-shaped section surrounded by the narrow hole is bent toward the plate.   
     
     
         6 . The valve device of the compressor according to  claim 1 ,
 wherein a length of the one or two openings in a direction parallel to the symmetric axis is smaller than a length of the opening/closing section in a direction perpendicular to the symmetric axis.   
     
     
         7 . The valve device of the compressor according to  claim 1 , further comprising:
 a plate-shaped spring reed disposed between the reed and the stopper;   wherein one end portion of the spring reed is fastened to the plate, and the other end portion of the spring reed is positioned in a region in which the opening/closing section of the reed is movable, and   the stopper indirectly limits an opening degree of the reed via the spring reed.   
     
     
         8 . A sealed compressor comprising:
 a compression component including the valve device of the compressor as recited in  claim 1 , the piston, and a block provided with the compression chamber;   an electric component for actuating the piston; and   a sealed container accommodating the electric component and the compression component.