Motor-operated compressor

Abstract

The present disclosure provides a motor-operated compressor comprising a compression module configured to compress a fluid by an orbiting motion of a scroll, an inverter module configured to control an operation of the compression module, a driving motor disposed in the compression module and configured to provide a rotational force for the orbiting motion of the scroll, a power element disposed in the inverter module and configured to provide power to the driving motor, and a three-phase airtight terminal comprising columnar conductors and columnar insulators disposed in an alternating manner along concentric circles. The three-phase airtight terminal may be configured to electrically connect the power element and the driving motor.

What is claimed is: 
     
         1 . A motor-operated compressor comprising:
 a compression module configured to compress a fluid by an orbiting motion of a scroll;   an inverter module configured to control an operation of the compression module;   a driving motor disposed in the compression module and configured to provide a rotational force for the orbiting motion of the scroll;   a power element disposed in the inverter module and configured to provide power to the driving motor; and   a three-phase airtight terminal comprising columnar conductors and columnar insulators disposed in an alternating manner along concentric circles, the terminal being configured to electrically connect the power element and the driving motor.   
     
     
         2 . The compressor of  claim 1 , wherein the three-phase airtight terminal comprises:
 a first conductor having a cylindrical shape disposed at a center of the concentric circles;   a first insulator having a hollow cylindrical shape configured to surround the first conductor;   a second conductor having a hollow cylindrical shape configured to surround the first insulator;   a second insulator having a hollow cylindrical shape configured to surround the second conductor;   a third conductor having a hollow cylindrical shape configured to surround the second insulator; and   a third insulator having a hollow cylindrical shape configured to surround the third conductor,   wherein a length of the second conductor in a height direction of the cylindrical shape is shorter than a length of the first conductor and longer than a length of the third conductor.   
     
     
         3 . The compressor of  claim 2 , wherein:
 a length of the first insulator is shorter than the length of the first conductor and longer than the length of the second conductor in the height direction of the cylindrical shape,   a length of the second insulator is shorter than the length of the second conductor and longer than the length of the third conductor in the height direction of the cylindrical shape, and   a length of the third insulator is shorter than the length of the third conductor in the height direction of the cylindrical shape.   
     
     
         4 . The compressor of  claim 3 , wherein:
 both ends of the first conductor protrude more than the first insulator in the height direction of the cylindrical shape,   both ends of the second conductor are exposed between the first insulator and the second insulator in the height direction of the cylindrical shape, and   both ends of the third conductor are exposed between the second insulator and the third insulator in the height direction of the cylindrical shape.   
     
     
         5 . The compressor of  claim 1 , further comprising:
 a busbar configured to electrically connect the conductor and the power element; and   a connecting clip configured to electrically connect the conductor and the driving motor,   wherein the busbar and the connecting clip are configured to surround an outer circumferential surface of the conductor, respectively.   
     
     
         6 . The compressor of  claim 5 , wherein the busbar and the connecting clip are press-fitted to the outer circumferential surface of the conductor, respectively. 
     
     
         7 . The compressor of  claim 1 , wherein the inverter module comprises an inverter housing or an inverter cover, wherein the inverter housing or the inverter cover is configured to form a boundary between the compression module and the inverter module, and
 the three-phase airtight terminal is physically coupled to the inverter housing or the inverter cover and configured to penetrate through the inverter housing or the inverter cover.   
     
     
         8 . The compressor of  claim 7 , wherein an insulator disposed at an outermost position of the insulators comprises an inverter coupling portion protruding in an annular shape in a radial direction,
 wherein the inverter coupling portion is in close contact with one surface of the inverter housing or one surface of the inverter cover.   
     
     
         9 . The compressor of  claim 8 , further comprising:
 a sealing member in an annular shape,   wherein the sealing member is disposed between the inverter coupling portion and one surface of the inverter housing or between the inverter coupling portion and one surface of the inverter cover.   
     
     
         10 . The compressor of  claim 1 , further comprising:
 an airtight terminal housing configured to surround the three-phase airtight terminal,   wherein the airtight terminal housing comprises:
 a first housing disposed in the inverter module and coupled to one side of the three three-phase airtight terminal in a height direction of a cylindrical shape; and 
 a second housing disposed in the compression module and coupled to another side of the three three-phase airtight terminal in the height direction of the cylindrical shape. 
   
     
     
         11 . The compressor of  claim 10 , wherein:
 the inverter module comprises an inverter housing or an inverter cover, wherein the inverter housing or the inverter cover is configured to form a boundary between the compression module and the inverter module,   the first housing comprises a coupling member coupling portion protruding in a radial direction from both sides of the first housing,   the coupling member coupling portion is in close contact with the inverter housing or the inverter cover, and   the coupling member coupling portion is fixed by a coupling member penetrating through the coupling member coupling portion and coupled to the inverter housing or the inverter cover.   
     
     
         12 . The compressor of  claim 10 , wherein the second housing comprises a driving motor coupling portion coupled to the driving motor, and
 wherein the driving motor coupling portion is coupled to the driving motor by a hook.   
     
     
         13 . The compressor of  claim 10 , wherein the second housing comprises a positioning protrusion protruding toward the driving motor, and
 wherein the positioning protrusion is configured to be inserted into a positioning groove formed in the driving motor.   
     
     
         14 . A motor-operated compressor comprising:
 a compression module configured to compress a fluid by an orbiting motion of a scroll;   an inverter module configured to control an operation of the compression module, the inverter module comprising an inverter housing or an inverter cover;   a driving motor disposed in the compression module and configured to provide a rotational force for the orbiting motion of the scroll;   a power element disposed in the inverter module and configured to provide power to the driving motor; and   a three-phase airtight terminal physically coupled to the inverter housing or the inverter cover, wherein the three-phase airtight terminal comprises columnar conductors and columnar insulators disposed in an alternating manner along concentric circles, and wherein the terminal is configured to electrically connect the power element and the driving motor.   
     
     
         15 . The compressor of  claim 14 , wherein the three-phase airtight terminal comprises:
 a first conductor having a cylindrical shape disposed in a center of the concentric circles;   a first insulator having a hollow cylindrical shape configured to surround the first conductor;   a second conductor having a hollow cylindrical shape configured to surround the first insulator;   a second insulator having a hollow cylindrical shape configured to surround the second conductor;   a third conductor having a hollow cylindrical shape configured to surround the second insulator; and   a third insulator having a hollow cylindrical shape configured to surround the third conductor,   wherein a length of the second conductor in a height direction of the cylindrical shape is shorter than a length of the first conductor and longer than a length of the third conductor.   
     
     
         16 . The compressor of  claim 15 , wherein:
 a length of the first insulator is shorter than the length of the first conductor and longer than the length of the second conductor in the height direction of the cylindrical shape,   a length of the second insulator is shorter than the length of the second conductor and longer than the length of the third conductor in the height direction of the cylindrical shape, and   a length of the third insulator is shorter than the length of the third conductor in the height direction of the cylindrical shape.   
     
     
         17 . The compressor of  claim 16 , wherein:
 both ends of the first conductor protrude more than the first insulator in the height direction of the cylindrical shape,   both ends of the second conductor are exposed between the first insulator and the second insulator in the height direction of the cylindrical shape, and   both ends of the third conductor are exposed between the second insulator and the third insulator in the height direction of the cylindrical shape.   
     
     
         18 . The compressor of  claim 14 , further comprising:
 a busbar configured to electrically connect the conductor and the power element; and   a connecting clip configured to electrically connect the conductor and the driving motor,   wherein the busbar and the connecting clip are configured to surround an outer circumferential surface of the conductor, respectively.   
     
     
         19 . The compressor of  claim 18 , wherein the busbar and the connecting clip are press-fitted to the outer circumferential surface of the conductor, respectively. 
     
     
         20 . The compressor of  claim 14 , further comprising:
 an airtight terminal housing configured to surround the three-phase airtight terminal,   wherein the airtight terminal housing comprises:
 a first housing disposed in the inverter module and coupled to one side of the three three-phase airtight terminal; and 
 a second housing disposed in the compression module and coupled to another side of the three three-phase airtight terminal.