Compressor

Abstract

In a compressor, a gasket includes a plurality of slits that are arranged at intervals so as to extend along a peripheral edge of the gasket and a plurality of interval portions that are located between the slits. A first housing member has an end face that faces the gasket, and a plurality of grooves is formed in the end face at positions corresponding to the interval portions such that each groove faces its corresponding interval portion. In a state in which the first housing member and a second housing member are connected to each other with the gasket interposed therebetween, the plurality of slits communicate with each other via the grooves to thereby form part of an oil passage through which lubricant oil in the oil reservoir portion flows to a refrigerant compressor, and the slits form throttles of the oil passage.

What is claimed is: 
     
         1 . A compressor comprising:
 a housing assembly that comprises a plurality of housing members including a first housing member and a second housing member, the housing assembly being formed by connecting the housing members together;   a gasket that is interposed between the first housing member and the second housing member;   a refrigerant compressor that is disposed in the housing assembly and configured to compress refrigerant that is taken in from outside; and   an oil reservoir portion that is provided in the housing assembly and in which lubricant oil that is separated from discharged refrigerant is accumulated, wherein   the gasket includes a plurality of slits that are arranged at intervals so as to extend along a peripheral edge of the gasket, and a plurality of interval portions that are located between the slits,   the first housing member has an end face that faces the gasket, and a plurality of grooves is formed in the end face at positions corresponding to the interval portions such that each groove faces its corresponding interval portion,   in a state in which the first housing member and the second housing member are connected to each other with the gasket interposed therebetween, the plurality of slits communicate with each other via the grooves to thereby form part of an oil passage through which lubricant oil in the oil reservoir portion flows to the refrigerant compressor, and   the slits form throttles of the oil passage.   
     
     
         2 . The compressor according to  claim 1 , wherein
 a compression chamber is defined in the refrigerant compressor,   the housing assembly has therein a suction chamber that takes in refrigerant that is to be compressed in the refrigerant compressor from the outside, and   the oil passage is in communication with the suction chamber or the compression chamber.   
     
     
         3 . The compressor according to  claim 2 , wherein
 the refrigerant compressor includes a fixed scroll and a movable scroll that cooperate to form the compression chamber.   
     
     
         4 . The compressor according to  claim 3 , wherein
 the housing assembly has therein a back pressure chamber that is formed on one side of the movable scroll that is away from the fixed scroll and that pushes the movable scroll toward the fixed scroll, and   the oil passage is in communication with the back pressure chamber.   
     
     
         5 . The compressor according to  claim 1 , wherein
 the compressor includes a rotary shaft that is rotatably supported in the housing assembly,   the refrigerant compressor includes a rotor that is mounted on the rotary shaft and has a plurality of vane slots formed in an outer periphery thereof, and a plurality of vanes that are inserted into the vane slots and slide inward and outward of the vane slots,   the vane slots and the vanes cooperate to form a back pressure chamber,   the plurality of housing members includes a cylinder,   the rotor is disposed in the cylinder,   a first side plate and a second side plate are mounted to opposite ends of the cylinder,   the housing assembly has therein a discharge chamber that is defined on one side of the second side plate and through which refrigerant that is compressed in the refrigerant compressor is discharged to the outside,   the oil reservoir portion is located under the discharge chamber in the housing assembly,   an oil separator is fixed to the second side plate on one side thereof that faces the discharge chamber,   an oil separation chamber is formed in the oil separator,   an intermediate pressure chamber that communicates with the oil reservoir portion and the back pressure chamber is formed between the oil separator and the second side plate,   the gasket is disposed between the second side plate and the oil separator, and   the oil passage provides communication between the oil reservoir portion and the intermediate pressure chamber.   
     
     
         6 . The compressor according to  claim 1 , wherein a filter portion is provided at an inlet of the oil passage. 
     
     
         7 . The compressor according to  claim 6 , wherein the filter portion is formed in the gasket, has a comb shape, and comprises a plurality of comb-tooth shaped slits. 
     
     
         8 . The compressor according to  claim 1 , wherein
 each groove has a length that is greater than a length of its corresponding interval portion such that the groove faces two neighbouring slits between which the corresponding interval portion is located, and has a cross-sectional area that is greater than cross-sectional areas of the neighbouring slits.