Semi-hermetic refrigerant compressor

Abstract

In order to improve a semi-hermetic refrigerant compressor, comprising a compressor unit and an electric motor, an overall housing which has a motor housing portion for the electric motor and a compressor housing portion for the compressor unit, a suction-side refrigerant path extending from a suction port on the overall housing to the compressor unit, and a pressure-side refrigerant path extending to a pressure port of the compressor unit, such that problems with particles carried along by the refrigerant from the refrigerant circuit are prevented, an inlet for refrigerant to be fed to a motor compartment in the motor housing portion is arranged on the motor housing portion in a region situated opposite the compressor housing portion, and is provided and the inlet is provided with a cover which has an entry guide element and a filter element for separating out particles carried along by means of the refrigerant.

1 . A semi-hermetic refrigerant compressor, comprising a compressor unit and an electric motor, an overall housing which has a motor housing portion for the electric motor and a compressor housing portion for the compressor unit, a suction-side refrigerant path extending from a suction port on the overall housing to the compressor unit, and a pressure-side refrigerant path extending to a pressure port of the compressor unit,
 wherein an inlet for refrigerant to be fed to a motor compartment in the motor housing portion is arranged on the motor housing portion in a region situated opposite the compressor housing portion, and wherein the inlet is provided with a cover which has an entry guide element and a filter element for separating out particles carried along by the refrigerant.   
     
     
         2 . The refrigerant compressor according to  claim 1 , wherein the cover overlaps an opening of the inlet facing toward the motor compartment. 
     
     
         3 . The refrigerant compressor according to  claim 1 , wherein the cover has a frame holding and fixing the filter element. 
     
     
         4 . The refrigerant compressor according to  claim 3 , wherein on an external side, the frame surrounds the opening of the inlet facing toward the motor compartment. 
     
     
         5 . The refrigerant compressor according to  claim 1 , wherein the inlet allows the refrigerant to impinge upon the cover in a direction of flow directed toward a rotor of the electric motor. 
     
     
         6 . The refrigerant compressor according to  claim 3 , wherein the cover has a flow distribution element as the entry guide element, which distributes a refrigerant flow passing through the inlet to regions of the filter element surrounding the flow distribution element. 
     
     
         7 . The refrigerant compressor according to  claim 1 , wherein the inlet is configured such that it allows the refrigerant flow to impinge upon the flow distribution element. 
     
     
         8 . The refrigerant compressor according to  claim 1 , wherein the inlet has an inlet chamber which is provided for accommodating particles held back by the filter element, and wherein the cover overlaps an opening of the inlet chamber facing toward the motor compartment. 
     
     
         9 . The refrigerant compressor according to  claim 8 , wherein the inlet chamber is provided with a collecting region for particles held back by the filter element. 
     
     
         10 . The refrigerant compressor according to  claim 8 , wherein the cover has a particle guiding element as the entry guide element, which extends from the flow distribution element to a collecting region of the inlet chamber. 
     
     
         11 . The refrigerant compressor according to  claim 8 , wherein the cover has a screening element as the entry guide element, which delimits a collecting region for particles filtered out of the refrigerant flow by the filter element and becoming deposited in the collecting region of the inlet chamber. 
     
     
         12 . The refrigerant compressor according to  claim 11 , wherein the screening element reduces, in particular prevents, a throughflow through a part of the refrigerant flow of the particles becoming deposited in the collecting region of the inlet chamber. 
     
     
         13 . The refrigerant compressor according to  claim 1 , wherein the filter element is made from a wire mesh or a knit wire mesh. 
     
     
         14 . The refrigerant compressor according to  claim 13 , wherein the wire gauze or wire mesh of the filter element extends as far as the frame and is held thereon. 
     
     
         15 . The refrigerant compressor according to  claim 6 , wherein the flow distribution element is arranged, in the flow direction, in front of the filter element and partially covers it. 
     
     
         16 . The refrigerant compressor according to  claim 6 , wherein the particle guiding element is arranged, in the flow direction, in front of the filter element and partially covers it. 
     
     
         17 . The refrigerant compressor according to  claim 6 , wherein the screening element is arranged, in the flow direction, in front of the filter element and partially covers it. 
     
     
         18 . The refrigerant compressor according to  claim 6 , wherein at least one of i) the flow distribution element and ii) the particle deflecting element and iii) the screening element are a portion of an entry guide mask. 
     
     
         19 . The refrigerant compressor according to  claim 18 , wherein the cover element comprises the entry guide mask. 
     
     
         20 . The refrigerant compressor according to  claim 1 , wherein the filter element is formed by a thin flat material. 
     
     
         21 . The refrigerant compressor according to  claim 20 , wherein the filter element is formed by openings introduced into the thin flat material. 
     
     
         22 . The refrigerant compressor according to  claim 19 , wherein the flow distribution element is integrated into the thin flat material. 
     
     
         23 . The refrigerant compressor according to  claim 19 , wherein the particle deflecting element is integrated into the thin flat material. 
     
     
         24 . The refrigerant compressor according to  claim 19 , wherein the screening element is integrated into the thin flat material. 
     
     
         25 . The refrigerant compressor according to  claim 8 , wherein the inlet chamber is provided, in addition to the inlet, with an externally arranged access opening. 
     
     
         26 . The refrigerant compressor according to  claim 25 , wherein the external access opening is arranged in the region of the collecting region of the inlet chamber. 
     
     
         27 . The refrigerant compressor according to  claim 26 , wherein the external access opening opens into the collecting region of the inlet chamber. 
     
     
         28 . The refrigerant compressor according to  claim 26 , wherein the external access opening is closable by way of a closing body. 
     
     
         29 . The refrigerant compressor according to  claim 8 , wherein a receptacle chamber which, in particular, penetrates the end cap, adjoins the collecting region of the inlet chamber and, in particular, is accessible from a side of the end cap facing away from the motor compartment. 
     
     
         30 . The refrigerant compressor according to  claim 27 , wherein the receptacle chamber is closable by way of a closure element that is fixable on the end cap.