Compressor Valve Plate Device

Abstract

Provided is a specific structure for a compressor valve plate device, which can ensure smooth operation of a suction valve in terms of suction valve sticking force due to lubricant oil, and can be mass-produced at low cost with high efficiency. The compressor valve plate device comprises; a valve plate having a suction hole and a discharge hole; a suction valve; and a discharge valve. At least a part of a gas filling chamber capable of introducing and filling gas with a higher pressure than suction gas pressure in a suction chamber between the valve plate and the suction valve is constituted in the valve plate, while a communication hole communicating with a surface at the valve closing side of the suction valve is provided to the valve plate. At least a part of a gas introduction route for introducing the higher-pressure gas into the communication hole is formed on the discharge valve formed from a thin plate. In addition, a part of the gas introduction route formed on the discharge valve is sealed by a member disposed on a surface facing the discharge valve.

1 . A valve plate device for a compressor which is interposed between a cylinder head having a suction chamber and a discharge chamber and a cylinder block having a cylinder bore inserted reciprocally with a piston and which comprises a valve plate having a suction hole communicating between said suction chamber and said cylinder bore and a discharge hole communicating between said cylinder bore and said discharge chamber, a suction valve disposed on a surface of said valve plate facing said cylinder block for opening and closing said suction hole, and a discharge valve disposed on a surface of said valve plate facing said cylinder head for opening and closing said discharge hole, wherein in said valve plate, at least a part of a gas filling chamber capable of introducing and filling gas with a higher pressure than a suction gas pressure in said suction chamber between said valve plate and said suction valve is constituted and a communication hole communicating with a surface at a valve closing side of said suction valve is provided, at least a part of a gas introduction route for introducing said gas with a higher pressure than a suction gas pressure in said suction chamber into said communication hole is formed on said discharge valve, and a part of said gas introduction route formed on said discharge valve is sealed by a member disposed on a surface facing said discharge valve. 
     
     
         2 . The compressor valve plate device according to  claim 1 , wherein at least a part of said gas introduction route formed on said discharge valve passes through a portion corresponding to at least a part of a partition wall between said discharge chamber and said suction chamber in said cylinder head. 
     
     
         3 . The compressor valve plate device according to claim, wherein at least a part of said gas introduction route formed on said discharge valve passes through a portion corresponding to at least a part of an outer circumferential wall of said cylinder head. 
     
     
         4 . The compressor valve plate device according to  claim 1 , wherein a bead is formed on at least a part of said member disposed on a surface facing said discharge valve for sealing at least a part of said gas introduction route formed on said discharge valve or a portion including said part of said gas introduction route and a circumferential portion of said communication hole. 
     
     
         5 . The compressor valve plate device according to  claim 1 , wherein at least a part of a facing surface of at least one of said discharge valve and said member disposed on a surface facing said discharge valve is formed from a polymer material. 
     
     
         6 . The compressor valve plate device according to  claim 1 , wherein at least a part of said gas introduction route formed on said discharge valve is formed by punching. 
     
     
         7 . The compressor valve plate device according to  claim 1 , wherein at least a part of said gas introduction route formed on said discharge valve is formed by bead processing. 
     
     
         8 . The compressor valve plate device according to  claim 1 , wherein a seal material, for a part of which a polymer material is used, is nipped between said discharge valve and said member disposed on a surface facing said discharge valve. 
     
     
         9 . The compressor valve plate device according to  claim 1 , wherein said discharge valve and said member disposed on a surface facing said discharge valve are bonded to each other by a polymer material having an adhesive property at least at a part of a portion present therebetween. 
     
     
         10 . The compressor valve plate device according to  claim 1 , wherein said discharge valve and said valve plate are connected to each other by a rivet or a bolt at least at one position or more. 
     
     
         11 . The compressor valve plate device according to  claim 1 , wherein a seal width of a seal portion for at least a part of said gas introduction route formed on said discharge valve is set at 0.2 mm or more. 
     
     
         12 . The compressor valve plate device according to  claim 1 , wherein at least a part of a portion of said discharge valve positioned in said discharge chamber is supported by said cylinder head. 
     
     
         13 . The compressor valve plate device according to  claim 1 , wherein barrel polishing is performed for at least a part of said gas introduction route formed on said discharge valve. 
     
     
         14 . The compressor valve plate device according to  claim 1 , wherein a width of said gas introduction route formed on said discharge valve varies partially. 
     
     
         15 . The compressor valve plate device according to  claim 1 , wherein a width of at least a part of said gas introduction route formed on said discharge valve is smaller than a width of a partition wall between said discharge chamber and said suction chamber in said cylinder head. 
     
     
         16 . The compressor valve plate device according to  claim 1 , wherein said gas introduction route formed on said discharge valve extends bending or curving on the way. 
     
     
         17 . The compressor valve plate device according to  claim 1 , wherein said gas introduction route is formed in an order of valve plate-discharge valve-valve plate. 
     
     
         18 . The compressor valve plate device according to  claim 1 , wherein said gas introduction route is formed in an order of valve plate-discharge valve. 
     
     
         19 . The compressor valve plate device according to  claim 1 , wherein a route for introducing gas, which includes as far as said communication hole, is formed by said discharge valve and said valve plate. 
     
     
         20 . The compressor valve plate device according to  claim 1 , wherein said compressor is one used for an air conditioning system for a vehicle.