Back to results
US 7,484,945 B2Granted
Compressor for refrigerator-freezer having a porous member
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsAtsuo Okaichi, Hiroshi Hasegawa, Fumitoshi Nishiwaki
Life of this patent
Estimating the term…
Abstract
A projection of an upper bearing member is provided with a porous member, and a lower space between a rotational motor and a compression mechanism is defined into a lower compression mechanism-side space and a lower rotational motor-side space. With this structure, stirring effect of working fluid flowing in the lower compression mechanism-side space caused by rotation of the rotor is suppressed, and oil drops mixed in the working fluid are prevented from being finely divided by the stirring effect, the oil drops are allowed to fall due to the gravity in the lower compression mechanism-side space, and oil separating effect from the working fluid is enhanced.
Claims26
A compressor comprising
- a compression mechanism for compressing working fluid,
- a rotational motor including a stator,
- a rotor for driving said compression mechanism and
- a container for accommodating said compression mechanism and said rotational motor, in which the compressed working fluid flows from said compression mechanism to said rotational motor,
- wherein a space between said compression mechanism and said rotational motor is divided by a porous member through which the working fluid passes,and central portion of said porous member is thicker than an outer periphery of the porous member, and
- further comprising a discharge pipe provided on the opposite side from the compression mechanism with respect to the porous member;
- wherein the compressed working fluid is discharged into a lower compression mechanism side space which is defined between the porous member and the compression mechanism.
4 more elements
A compressor comprising
- a compression mechanism for compressing working fluid,
- a rotational motor including a stator,
- a rotor for driving said compression mechanism and
- a container for accommodating said compression mechanism and said rotational motor, in which said container includes a discharge pipe provided on the opposite side of said compression mechanism with respect to said rotational motor and on the opposite side from the compression mechanism with respect to the porous member, and
- wherein the compressed working fluid flows from said rotational motor to said discharge pipe, wherein a space between said compression mechanism and said rotational motor is divided by a porous member through which the working fluid passes,and a central portion of said porous member is thicker than an outer periphery of the porous member, and
- wherein the compressed working fluid is discharged into a lower compression mechanism side space which is defined between the porous member and the compression mechanism.
3 more elements
A compressor comprising
- a compression mechanism for compresing working fluid,
- a rotational motor including a stator,
- a rotor for driving said compression mechanism and
- a container for accommodating said compression mechanism and said rotational motor, in which the compressed working fluid flows from said compression mechanism to said rotational motor, wherein
- a space between said compression mechanism and said rotational motor is divided by a porous member through which the working fluid passes,
- said porous member is made of porous plate selected from the group consisting of:
- honeycomb and punching metal, and said porous plate has holes, a diameter of a hole closer to a central portion of said porous plate is smaller than that of a hole closer to an outer periphery of the porous plate, and
- further comprising a discharge pipe provided on the opposite side from the compression mechanism with respect to the porous member;
- wherein the compressed working fluid is discharged into a lower compression mechanism side space which is defined between the porous member and the compression mechanism.
6 more elements
A compressor comprising
- a compression mechanism for compressing working fluid,
- a rotational motor including a stator,
- a rotor for driving said compression mechanism and
- a container for accommodating said compression mechanism and said rotational motor, in which said container includes a discharge pipe on the opposite side of said compression mechanism with respect to said rotational motor, and
- wherein the compressed working fluid flows from said rotational motor to said discharge pipe, wherein a space between said compression mechanism and said rotational motor is divided by a porous member through which the working fluid passes,
- said porous member is made of porous plate selected from the group consisting of:
- honeycomb and punching metal, and said porous plate has holes, a diameter of a hole closer to a central portion of said porous plate is smaller than that of a hole closer to an outer periphery of the porous plate, and
- further comprising a discharge pipe provided on the opposite side from the compression mechanism with respect to the porous member;
- wherein the compressed working fluid is discharged into a lower compression mechanism side space which is defined between the porous member and the compression mechanism.
6 more elements
A compressor comprising
- a compression mechanism for compressing working fluid,
- a rotational motor including a stator,
- a rotor for driving said compression mechanism and
- a container for accommodating said compression mechanism and said rotational motor, in which the compressed working fluid flows from said compression mechanism to said rotational motor, wherein a space between said compression mechanism and said rotational motor is divided by a porous member through which the working fluid passes, and
- a central portion of said porous member is thicker than an outer periphery of the porous member, and
- further comprising a discharge pipe provided on the opposite side from the compression mechanism with respect to the porous member;
- wherein the compressed working fluid is discharge into a lower compression mechanism side space which is defined between the porous member and the compression mechanism,
- wherein said porous member made of mesh selected from the group consisting of:
- metal thin wire, glass wool and ceramic wool, and
- wherein a central portion of said mesh is higher density than that of an outer periphery of the mesh.
7 more elements
A compressor comprising
- a compression mechanism for compressing working fluid,
- a rotational motor including a stator,
- a rotor for driving said compression mechanism and
- a container for accommodating said compression mechanism and said rotational motor, in which said container includes a discharge pipe provided on the opposite side of said compression mechanism with respect to said rotational motor, and the compressed working fluid flows from said rotational motor to said discharge pipe, wherein
- a space between said compression mechanism and said rotational motor is divided by a porous member through which the working fluid passes, and a central portion of said porous member is thicker than an outer periphery of the porous member, and
- further comprising a discharge pipe provided on the opposite side from the compression mechanism with respect to the porous member;
- wherein the compressed working fluid is discharged into a lower compression mechanism side space which is defined between the porous member and the compression mechanism,
- wherein said porous member is made of mesh selected from the group consisting of:
- metal thin wire, glass wool and ceramic wool, and
- wherein a central portion of said mesh is higher density than that of an outer periphery of the mesh.
7 more elements
Dependencies are inferred from the claim text.