Scroll compressor and air conditioner including a scroll compressor

Patent metadata

Field	Value
Publication number	US-2016201669-A1
Application number	US-201614988105-A
Country	US
Kind code	A1
Filing date	Jan 5, 2016
Priority date	Jan 12, 2015
Publication date	Jul 14, 2016
Grant date	—

Abstract

A scroll compressor and an air conditioner including a scroll compressor are provided. The scroll compressor may include a main frame configured to support an upper portion of a rotating shaft; a fixed scroll coupled to the main frame and having a first wrap; an orbiting scroll provided to perform an orbiting motion with respect to the fixed scroll and having a second wrap which forms a plurality of compressions chamber between the first wrap and the second wrap; a suction port configured to enable a first refrigerant to be suctioned into the compression chamber; a first introduction port provided at a first side of the fixed scroll and configured to inject the first refrigerant into the plurality of compression chambers; a second introduction port provided at a second side of the fixed scroll and configured to inject a second refrigerant having a pressure different from a pressure of the first refrigerant into the plurality of compression chambers; and a third introduction port provided at a third side of the fixed scroll and configured to inject a third refrigerant having a pressure different from the pressure of the first refrigerant and the second refrigerant into the compression chamber. The first introduction port may be provided at a position at which injecting of the refrigerant through the first introduction port is able to be performed before suctioning of the refrigerant through the suction port is completed.

First claim

What is claimed is:

1 . An scroll compressor, comprising:
a motor configured to generate a drive force; a rotatable shaft configured to rotatably pass through the motor; a main frame configured to support an upper portion of the rotating shaft; a fixed scroll coupled to the main frame and having a first wrap; an orbiting scroll that performs an orbiting motion with respect to the fixed scroll and having a second wrap that forms a plurality of compression chambers between the first wrap and the second wrap; a suction port configured to enable a first refrigerant to be suctioned into the compression chamber; a first introduction port provided at a first portion of the fixed scroll and configured to inject the first refrigerant into the plurality of compression chambers; a second introduction port provided at a second portion of the fixed scroll and configured to inject a second refrigerant having a pressure different from a pressure of the first refrigerant into the plurality of compression chambers; and a third introduction port provided at a third portion of the fixed scroll and configured to inject a third refrigerant having a pressure different from the pressure of the first refrigerant and the second refrigerant into the plurality of compression chambers.

2 . The scroll compressor according to claim 1 , wherein the first introduction port is provided at a position at which injecting of the first refrigerant through the first introduction port is performed before suctioning of the first refrigerant through the suction port is completed.

3 . The scroll compressor according to claim 2 , wherein the first introduction port is provided at a position at which an extension line that connects a center of the fixed scroll with a center of the suction port is rotated to a first predetermined angle in a direction opposite to a rotational direction of the plurality of compression chambers.

4 . The scroll compressor according to claim 3 , wherein the first predetermined angle has a range of about 61° to about 101°.

5 . The scroll compressor according to claim 2 , wherein the second introduction port is provided at a position which is located at a second predetermined angle from a position of the first introduction port in a rotational direction of the plurality of compression chambers.

6 . The scroll compressor according to claim 5 , wherein the second predetermined angle has a range of about 130° to about 150°.

7 . The scroll compressor according to claim 2 , wherein the third introduction port is provided at a position which is located at a third predetermined angle from a position of the first introduction port in a rotational direction of the plurality of compression chambers.

8 . The scroll compressor according to claim 7 , wherein the third predetermined angle has a range of about 260° to about 300°.

9 . The scroll compressor according to claim 3 , wherein the fixed scroll includes a plurality of fasteners coupled to the main frame, and wherein the center of the fixed scroll is formed at a position at which an imaginary line that connects two opposite fasteners among the plurality of fasteners intersects an imaginary line that connects another two opposite fasteners.

10 . The scroll compressor according to claim 2 , wherein a rotation angle of the rotating shaft at a point of time when the suctioning of the refrigerant through the suction port is completed is defined as about 0°, and wherein opening of the first introduction port is started when the rotation angle of the rotating shaft is about −50° to about −10°.

11 . The scroll compressor according to claim 2 , wherein a discharge hole, through which the compressed refrigerant is discharged, is formed at the fixed scroll, and the center of the fixed scroll is a center of the discharge hole.

12 . The scroll compressor according to claim 2 , wherein the plurality of compression chambers includes a first compression chamber and a second compression chamber, which have a set phase difference from each other.

13 . An air conditioner including the scroll compressor according to claim 1 .

14 . A scroll compressor, comprising:
a fixed scroll having a first wrap; an orbiting scroll having a phase difference with respect to the fixed scroll and having a second wrap which forms a plurality of compression chambers between the first wrap and the second wrap; a suction port configured to enable a refrigerant to be suctioned into the plurality of compression chambers; a first introduction port provided at a first portion of the fixed scroll and configured to inject the refrigerant into the compression chamber; a second introduction port provided at a second portion of the fixed scroll to inject the refrigerant into the compression chamber, and provided at a position which is rotated to a first predetermined angle from a position of the first introduction port in a rotational direction of the plurality of compression chambers; and a third introduction port provided at a third portion of the fixed scroll to inject the refrigerant into the plurality of compression chambers, and provided at a position which is rotated to a second predetermined angle from the position of the first introduction port in the rotational direction of the plurality of compression chambers.

15 . The scroll compressor according to claim 14 , wherein the first introduction port is provided at a position at which an extension line that connects a center of the fixed scroll with a center of the suction port is rotated to a third predetermined angle in a direction opposite to the rotational direction of the plurality of compression chambers.

16 . The scroll compressor according to claim 13 , wherein the third predetermined angle has a range of about 61° to about 101°.

17 . The scroll compressor according to claim 14 , wherein the first predetermined angle has a range of about 130° to about 150°.

18 . The scroll compressor according to claim 14 , wherein the second predetermined angle has a range of about 260° to about 300°.

19 . An air conditioner including the scroll compressor according to claim 14 .

20 . A scroll compressor, comprising:
a motor configured to generate a drive force; a rotatable shaft configured to rotatably pass through the motor; a main frame configured to support an upper portion of the rotating shaft; a first scroll coupled to the main frame and having a first wrap; a second scroll that performs an orbiting motion with respect to the fixed scroll and having a second wrap that forms a plurality of compression chambers between the first wrap and the second wrap; a suction port configured to enable a first refrigerant to be suctioned into the plurality of compression chambers; and a plurality of introduction ports provided at different circumferential portions of the first scroll, wherein each of the plurality of introduction ports injects a refrigerant having a different pressure than a pressure of the refrigerants injected through the remaining of the plurality of introduction ports.

21 . The scroll compressor according to claim 20 , wherein the plurality of introduction ports includes a first introduction port that injects a refrigerant at a first pressure, a second introduction port that injects refrigerant at a second pressure, and a third introduction port that injects refrigerant at a third pressure, and wherein the third pressure is higher than the second pressure, and the second pressure is higher than the fir

Assignees

• Lg Electronics Inc

Inventors

• Ryu Byoungjin
• Ko Younghwan
• Kim Byeongsu
• Kim Beomchan
• Chung Baikyoung

Classifications

• F04C29/0085

  Prime movers · CPC title

• F04C18/0261 Primary

  Details of the ports, e.g. location, number, geometry · CPC title

• F04C18/0215 Primary

  where only one member is moving · CPC title

• F25B1/04

  with compressor of rotary type ({F25B1/005,} F25B1/10 take precedence) · CPC title

• F04C29/0007

  Injection of a fluid in the working chamber for sealing, cooling and lubricating (sealing only F04C27/00; lubrication only F04C29/02; cooling F02B47/02, F02D21/00, F02M25/00) · CPC title