Electric refrigeration compressor having a cooling system for an electrical circuit
First Claim
1. An electrical compressor for a refrigeration circuit comprising:
- a compression portion, which draws and compresses refrigerant circulating in the refrigeration circuit;
an electrical motor that drives the compression portion;
a housing for accommodating the electrical motor, the housing having a cylindrical outer surface formed into an approximate cylindrical shape; and
an electrical circuit for driving the electrical motor, the electrical circuit being integrated to the cylindrical outer surface of the housing, wherein;
the housing includes a refrigerant passage through which the refrigerant passes, such that the refrigerant passes through the electrical motor when being drawn by the compression portion;
the electrical circuit includes a plurality of electrical members; and
the electrical members are located in a space between the cylindrical outer surface and a tangential plane, which is tangential to the cylindrical outer surface, and the electrical members are located in the vicinity of a line where the tangential plane meets the cylindrical outer surface.
1 Assignment
0 Petitions
Accused Products
Abstract
In an electrical compressor having a motor and an electrical circuit integrated with a compression portion, a part of electrical components of the electrical circuit is disposed in spaces between a cylindrical outer surface of a motor housing and an imaginary flat surface that imaginarily contacts the cylindrical outer surface. Therefore, the spaces can be used effectively, and the electrical compressor can be downsized. Further, the part of the electrical components can be effectively cooled by refrigerant in the motor housing. On the other hand, the outer surface of the motor housing is used as one surface defining an inner space of a casing for accommodating the electrical circuit. In this case, the electrical circuit can be effectively cooled by refrigerant in the motor housing.
-
Citations
20 Claims
-
1. An electrical compressor for a refrigeration circuit comprising:
-
a compression portion, which draws and compresses refrigerant circulating in the refrigeration circuit; an electrical motor that drives the compression portion; a housing for accommodating the electrical motor, the housing having a cylindrical outer surface formed into an approximate cylindrical shape; and an electrical circuit for driving the electrical motor, the electrical circuit being integrated to the cylindrical outer surface of the housing, wherein; the housing includes a refrigerant passage through which the refrigerant passes, such that the refrigerant passes through the electrical motor when being drawn by the compression portion; the electrical circuit includes a plurality of electrical members; and the electrical members are located in a space between the cylindrical outer surface and a tangential plane, which is tangential to the cylindrical outer surface, and the electrical members are located in the vicinity of a line where the tangential plane meets the cylindrical outer surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An electrical compressor for a refrigeration circuit comprising:
-
a compression portion, which draws and compresses refrigerant circulating in the refrigeration circuit; an electrical motor that drives the compression portion; a housing for accommodating the electrical motor, wherein the housing includes; a cylindrical outer surface; a planar seat surface for receiving a casing, which is attached to the housing; and a refrigerant passage through which the refrigerant passes, such that the refrigerant passes through and cools the electrical motor when being drawn by the compression portion; and an electrical circuit for driving the electrical motor, wherein the electrical circuit includes a plurality of electrical members, wherein a space is formed between the cylindrical outer surface and a plane defined by the planar seat surface, and the electrical members occupy the space and are located in close proximity to the cylindrical outer surface such that heat generated by the electrical members is transferred to the refrigerant passing through the motor, wherein; the plane is a first plane, and a second plane includes the axis of the motor and is perpendicular to the first plane; the space is a first space, and a second space, which is located between the outer cylindrical surface and the first plane, is provided on an opposite side of the second plane; and the plurality of electrical members is a first plurality of electrical members, and a second plurality of electrical members of the electrical circuit occupies the second space, such that heat generated by to second plurality of electrical members is transferred to the refrigerant passing through the motor. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. An electrical compressor for a refrigeration circuit comprising:
-
a compression portion, which draws and compresses refrigerant circulating in the refrigeration circuit; an electrical motor that drives the compression portion; a housing for accommodating the compression portion and the electrical motor, wherein the housing includes a refrigerant inlet into which the refrigerant is introduced, and a refrigerant passage, through which the refrigerant from the refrigerant inlet flows toward the compression portion, wherein the refrigerant passage conducts the refrigerant through the electrical motor towards the compression portion; an electrical circuit for driving the electrical motor; a casing for accommodating the electrical circuit, wherein; the housing has an outer cylindrical wall that defines an inner space of the casing, wherein the housing and the casing form a U-shape, and the inner space is formed between opposed legs of the U-shape; and the electrical circuit is located in the inner space of the casing in close proximity to the outer cylindrical wall such that heat generated by the electrical circuit is transferred to the outer cylindrical wall and to the refrigerant flowing through the refrigerant passage in the housing. - View Dependent Claims (20)
-
Specification