Compressor having a partitioned discharge chamber

Patent metadata

Field	Value
Publication number	US-9651047-B2
Application number	US-201414587571-A
Country	US
Kind code	B2
Filing date	Dec 31, 2014
Priority date	Jan 10, 2014
Publication date	May 16, 2017
Grant date	May 16, 2017

Abstract

A compressor includes a discharge housing member, which includes a discharge chamber and an oil separation chamber. The discharge housing member includes a cylindrical wall defining the discharge chamber and the oil separation chamber. The discharge chamber includes a partition that is continuous with and protrudes from the cylindrical wall. The cylindrical wall extends from an upper section of the discharge chamber toward a lower section of the discharge chamber. The cylindrical wall includes a communication hole connecting the discharge chamber to the oil separation chamber. The partition extends from the upper section of the discharge chamber toward the lower section of the discharge chamber and defines a first space and a second space in the discharge chamber. The first space and the second space are connected to each other at least at the lower section of the discharge chamber through a clearance between the partition and the circumferential wall.

First claim

What is claimed is:

1. A compressor, comprising:
a rotary shaft:
a compression mechanism that includes a compression chamber and that is configured to compress refrigerant gas in the compression chamber in response to rotation of the rotary shaft;
a discharge port connected to the compression chamber;
a cylindrical discharge housing member including an end wall that is perpendicular to an axial direction of the rotary shaft, and a circumferential wall;
a discharge chamber that is provided in the cylindrical discharge housing member and that is configured to receive the refrigerant gas compressed in the compression chamber and discharged via the discharge port;
an oil separation chamber that is provided in the cylindrical discharge housing member, the oil separation chamber accommodates an oil separation tube that is configured to separate lubricant contained in the refrigerant gas discharged to the discharge chamber from the refrigerant gas;
a cylindrical wall that is provided on the end wall of the cylindrical discharge housing member and that extends in a radial direction of the rotary shaft, the cylindrical wall separates the discharge chamber and the oil separation chamber from each other; and
a partition that is provided in the discharge chamber, the partition is continuous with and protrudes from the cylindrical wall in the axial direction of the rotary shaft, wherein
the cylindrical wall and the end wall define the oil separation chamber therebetween, the cylindrical wall bulges into the discharge chamber in the axial direction of the rotary shaft and extends from an upper section of the discharge chamber toward a lower section of the discharge chamber, and the cylindrical wall includes, at a position corresponding to the upper section, a communication hole connecting the discharge chamber to the oil separation chamber,
the partition extends from the upper section of the discharge chamber toward the lower section of the discharge chamber and defines a first space that communicates with the discharge port and a second space that communicates with the communication hole in the discharge chamber, and
the first space and the second space are connected to each other at least at the lower section of the discharge chamber through a clearance between the partition and the circumferential wall.

2. The compressor according to claim 1 , wherein the partition includes
a plurality of extended portions extending in the radial direction of the rotary shaft and arranged at positions different from each other in a direction perpendicular to the radial direction of the rotary shaft, and
a coupling portion connecting the extended portions together.

3. The compressor according to claim 2 , wherein at least one of the extended portions protrudes from a boundary between the cylindrical wall and the end wall of the discharge housing member.

4. The compressor according to claim 2 , wherein the coupling portion protrudes from an outer circumferential surface of the cylindrical wall.

5. The compressor according to claim 1 , wherein a volume ratio of the first space and the second space is set in accordance with a frequency range of discharge pulsation of the refrigerant gas.

6. The compressor according to claim 1 , wherein, in a depth direction of the discharge housing member, a length of the circumferential wall is longer than a length of the partition.

7. The compressor according to claim 1 , wherein the discharge port faces the communication hole and is arranged below the communication hole.

8. The compressor according to claim 1 , wherein the communication hole is arranged above a portion of the partition that protrudes from the cylinder wall.

9. The compressor according to claim 1 , wherein the circumferential wall and the end wall define a part of a contour of the compressor.

10. The compressor according to claim 1 , wherein as viewed in the axial direction of the rotary shaft, the first space is located at one of right and left sides of the partition, and the second space is located at the other of the right and left sides of the partition.

Assignees

• Toyota Jidoshokki Kk

Inventors

• Yamashita Takuro
• Yamazaki Jun
• Matsuda Kunihisa

Classifications

• F04C29/12 Primary

  Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet · CPC title

• F04C29/028

  Means for improving or restricting lubricant flow · CPC title

• F04C18/0215

  where only one member is moving · CPC title

• F04C23/008

  Hermetic pumps · CPC title