Scroll compressor

Patent metadata

Field	Value
Publication number	US-10041493-B2
Application number	US-201514710704-A
Country	US
Kind code	B2
Filing date	May 13, 2015
Priority date	Aug 13, 2014
Publication date	Aug 7, 2018
Grant date	Aug 7, 2018

Abstract

A scroll compressor is provided that may include a first scroll provided with a discharge port, a second scroll engaged with the first scroll to form a first compression chamber and a second compression chamber, and a rotational shaft provided with an eccentric portion eccentrically coupled to the first scroll or the second scroll The eccentric portion may overlap the first and second compression chambers in a radial direction. The discharge port may be provided with at least one discharge inlet and a discharge outlet The at least one discharge inlet may include a plurality of discharge inlets, which have different areas from each other, whereby a refrigerant of each compression chamber may be smoothly discharged, thereby preventing an over-compression loss due to a delay of discharge.

First claim

What is claimed is:

1. A scroll compressor, comprising:
a first scroll provided with a discharge port;
a second scroll engaged with the first scroll to form a first compression chamber and a second compression chamber; and
a rotational shaft provided with an eccentric portion eccentrically coupled to the first scroll or the second scroll, wherein the eccentric portion overlaps the first and second compression chambers in a radial direction, wherein the discharge port comprises a plurality of discharge inlets located at an outside of the eccentric portion in the radial direction and at least one discharge outlet, wherein the first compression chamber and the second compression chamber have different compression ratios from each other, wherein an area of a first discharge inlet of the plurality of discharge inlets, that communicates with the first compression chamber having a relatively high compression ratio is different than an area of a second discharge inlet of the plurality of discharge inlets, that communicates with the second compression chamber having a relatively low compression ration.

2. The scroll compressor of claim 1 , wherein the area of the first discharge inlet of the plurality of discharge inlets, that communicates with the first compression chamber having a relatively high compression ratio is greater than the area of the second discharge inlet of the plurality of discharge inlets, that communicates with the second compression chamber having a relatively low compression ratio.

3. The scroll compressor of claim 1 , wherein the at least one discharge outlet comprises a plurality of discharge outlets that communicates with the plurality of discharge inlets in an independent manner.

4. The scroll compressor of claim 3 , wherein the plurality of discharge outlets has different areas from each other, and wherein an area of a first discharge outlet of the plurality of discharge outlets, that communicates with the first compression chamber having a relatively high compression ratio is greater than an area of a second discharge outlet of the plurality of discharge outlets.

5. The scroll compressor of claim 3 , wherein the plurality of discharge outlets that communicates with the plurality of discharge inlets is provided at one side surface of the first scroll, and wherein the plurality of discharge outlets are opened and closed by a plurality of valves, respectively.

6. The scroll compressor of claim 1 , wherein the at least one discharge outlet comprises one discharge outlet provided on or at one side surface of the first scroll, and wherein the one discharge outlet is opened and closed by one valve.

7. The scroll compressor of claim 6 , wherein the one discharge outlet overlaps the plurality of discharge inlets in a circumferential direction.

8. The scroll compressor of claim 1 , wherein an opening time point of the first discharge inlet of the plurality of discharge inlets, that communicates with the first compression chamber having a relatively high compression ratio is earlier than or the same as an opening time point of the second discharge inlet of the plurality of discharge inlets, that communicates with the second compression chamber having a relatively low compression ratio.

9. The scroll compressor of claim 8 , wherein open states of the plurality of discharge inlets at least partially overlap each other.

10. A scroll compressor, comprising:
a first scroll provided with a discharge port;
a second scroll engaged with the first scroll to form a first compression chamber and a second compression chamber; and
a rotational shaft provided with an eccentric portion eccentrically coupled to the first scroll or the second scroll, wherein the eccentric portion overlaps the first and second compression chambers in a radial direction, and wherein the discharge port comprises one discharge inlet and a plurality of discharge outlets, and wherein the one discharge inlet is located at an outside of the eccentric portion in the radial direction.

11. The scroll compressor of claim 10 , wherein the first compression chamber and the second compression chamber have different compression ratios from each other, and wherein an area of a first side of the discharge inlet, adjacent to the first compression chamber having a relatively high compression ratio, is greater than an area of a second side of the discharge inlet, adjacent to the second compression chamber.

12. The scroll compressor of claim 10 , wherein the one discharge inlet comprises:
a first discharge inlet portion located adjacent to the first compression chamber;
a second discharge inlet portion located adjacent to the second compression chamber; and
a discharging communication portion by which the first discharge inlet portion and the second discharge inlet portion communicate with each other.

13. The scroll compressor of claim 10 , wherein the plurality of discharge outlets that communicates with the one discharge inlet is provided on one side surface of the first scroll, and wherein the plurality of discharge outlets is independently opened and closed, respectively, by a plurality of valves.

14. The scroll compressor according to claim 10 , wherein the one discharge inlet extends a length sufficient to communicate with both the first compression chamber and the second compression chamber.

15. The scroll compressor according to claim 10 , wherein the one discharge inlet overlaps the plurality of discharge outlets in the circumferential direction.

16. A scroll compressor, comprising:
a first scroll provided with a discharge port;
a second scroll engaged with the first scroll to form a first compression chamber and a second compression chamber; and
a rotational shaft provided with an eccentric portion eccentrically coupled to the first scroll or the second scroll, wherein the eccentric portion overlaps the compression chambers in a radial direction, wherein the discharge port comprises a plurality of discharge inlets and at least one discharge outlet, wherein the plurality of discharge inlets is located at an outside of the eccentric portion in the radial direction and includes a first discharge inlet that communicates with the first compression chamber and a second discharge inlet that communicates with the second compression chamber, wherein an opening time point of the first discharge inlet that communicates with the first compression chamber having a relatively high compression ratio is earlier than or the same as an opening time point of the second discharge inlet that communicates with the second compression chamber having a relatively low compression ratio.

17. The scroll compressor of claim 16 , wherein open states of the plurality of discharge inlets at least partially overlap each other.

18. The scroll compressor of claim 16 , wherein the plurality of inlets overlaps the at least one discharge outlet in a circumferential direction.

Assignees

• Lg Electronics Inc

Inventors

• Choi Yongkyu
• Lee Kangwook
• Kim Cheolhwan

Classifications

• F04C18/0261

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

• F04C29/12

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

• F04C23/008

  Hermetic pumps · CPC title

• F04C18/0215 Primary

  where only one member is moving · CPC title

• F04C2250/102

  of the outlet · CPC title