Motor operated compressor

Abstract

A motor operated compressor includes a compression module configured to compress a compression target fluid by an orbiting motion of a scroll; an inverter module configured to control driving of the compression module; a main housing formed to surround a mechanical component provided in the compression module and having an intake port for intaking the compression target fluid; an inverter cover forming a boundary between the compression module and the inverter module and disposed to be exposed to the compression target fluid flowing into the compression module through the intake port; and a plurality of guide protrusions protruding from the inverter cover toward an internal space of the main housing to guide the compression target fluid flowing in through the intake port along a surface of the inverter cover, and formed along a direction from the intake port toward an opposite side of the intake port.

What is claimed is: 
     
         1 . A motor operated compressor, comprising:
 a compression module configured to compress a compression target fluid;   an inverter module configured to control an operation of the compression module;   a main housing having an intake port for intake of the compression target fluid;   an inverter cover configured to form a boundary between the compression module and the main housing, and configured to be exposed to the compression target fluid flowing into the compression module through the intake port; and   a plurality of guide protrusions protruding from the inverter cover toward an internal space of the main housing, the guide protrusions positioned along a direction from the intake port toward an opposite side of the intake port and configured to direct the compression target fluid flowing in through the intake port along a surface of the inverter cover.   
     
     
         2 . The motor operated compressor of  claim 1 , wherein
 a contact area between the inverter cover and the compression target fluid is configured to face an open end of the main housing,   the opposite side of the intake port is located diametrically opposite to the intake port, and   the plurality of guide protrusions are spaced apart from each other to form a flow path from the intake port to the opposite side of the intake port.   
     
     
         3 . The motor operated compressor of  claim 1 , wherein
 the inverter cover includes a rotating shaft support portion protruding from a surface of the inverter cover and   the plurality of guide protrusions are arranged along radial directions extending from the rotating shaft support portion.   
     
     
         4 . The motor operated compressor of  claim 3 , wherein the plurality of guide protrusions are arranged along virtual circles concentric with the rotating shaft support portion, the guide protrusions being spaced apart from each other in a circumferential direction and in radial direction relative to the rotating shaft support portion. 
     
     
         5 . The motor operated compressor of  claim 4 , wherein
 a plurality of first guide protrusions from the plurality of guide protrusions are arranged along a first concentric circle having a first radius, the first guide protrusions being circumferentially spaced apart from each other at a first interval,   a plurality of second guide protrusions from the plurality of guide protrusions are arranged along a second concentric circle having a second radius larger than the first radius, the second guide protrusions being circumferentially spaced apart from each other at a second interval larger than the first interval.   
     
     
         6 . The motor operated compressor of  claim 1 , wherein
 the inverter cover has a rotating shaft support portion protruding from the surface of the inverter cover, and   the plurality of guide protrusions are arranged to be spaced apart from each other at equal intervals along two generally perpendicular coordinate axes.   
     
     
         7 . The motor operated compressor of  claim 1 , wherein
 the inverter cover has a rotating shaft support portion protruding from the surface of the inverter cover, and   the plurality of guide protrusions comprise:
 a plurality of first guide protrusions extending along a virtual circle concentric with the rotating shaft support portion, the first guide portions arranged to be spaced apart from each other; 
 a second guide protrusion extending from one of the first guide protrusions toward the intake port; and 
 a third guide protrusion extending from another of the first guide protrusions toward the opposite side of the intake port. 
   
     
     
         8 . The motor operated compressor of  claim 7 , wherein the plurality of first guide protrusions extend along virtual circles centered on the rotating shaft support portion and the first guide portions in each virtual circle are arranged to be spaced apart from each other. 
     
     
         9 . The motor operated compressor of  claim 8 , wherein
 the second guide protrusion includes a plurality of second guide protrusions extending along virtual straight lines passing through the rotating shaft support portion, the second guide portions being parallel to each other, and   the third guide protrusion includes a plurality of third guide portions extending along virtual straight lines passing through the rotating shaft support portion, the third guide portions being parallel to each other.   
     
     
         10 . The motor operated compressor of  claim 8 , wherein the first guide portions are arranged to be spaced apart from each other in a radial direction of the rotating shaft support portion. 
     
     
         11 . The motor operated compressor of  claim 10 , wherein the virtual concentric circles comprise:
 a first concentric circle having a first radius;   a second concentric circle having a second radius larger than the first radius; and   a third concentric circle having a third radius larger than the second radius, wherein
 a plurality of first guide protrusions arranged along the first concentric circle and a plurality of first guide protrusions arranged along the second concentric circle are arranged to be spaced apart from each other at a first interval in a radial direction of the rotating shaft support portion, 
 a plurality of first guide protrusions arranged along the second concentric circle and a plurality of first guide protrusions arranged along the third concentric circle are arranged to be spaced apart from each other at a second interval in a radial direction of the rotating shaft support portion, and 
 the first interval is smaller than the second interval. 
   
     
     
         12 . The motor operated compressor of  claim 8 , wherein
 the plurality of guide protrusions further include a fourth guide protrusion, and   the fourth guide protrusion extends along the radial direction of the rotating shaft support portion to connect first guide protrusions extending along different virtual concentric circles.   
     
     
         13 . The motor operated compressor of  claim 1 , wherein
 the inverter cover has a rotating shaft support portion protruding annularly from the surface of the inverter cover,   at least one hole allowing an annular inner side and an annular outer side of the rotating shaft support portion to communicate with each other is formed on a side surface of the rotating shaft support portion, and   the plurality of guide protrusions are formed both at a position corresponding to the annular inner side and at a position corresponding to the annular outer side.   
     
     
         14 . The motor operated compressor of  claim 1 , wherein the plurality of guide protrusions are integrally formed with the inverter cover by machining a surface of the inverter cover. 
     
     
         15 . The motor operated compressor of  claim 1 , further comprising:
 a cover plate formed to cover the plurality of guide protrusions,   wherein the cover plate is in contact with the plurality of guide protrusions and is spaced apart from the surface of the inverter cover.   
     
     
         16 . The motor operated compressor of  claim 15 , wherein
 the cover plate has a plurality of cover protrusions, and   the cover protrusions protrude toward the guide protrusions.   
     
     
         17 . The motor operated compressor of  claim 1 , further comprising:
 a protrusion forming plate formed of a thermally conductive material in contact with the surface of the inverter cover,   wherein the guide protrusions are formed on the protrusion forming plate.