Scroll compressor

Patent metadata

Field	Value
Publication number	US-10132314-B2
Application number	US-201715817531-A
Country	US
Kind code	B2
Filing date	Nov 20, 2017
Priority date	Aug 13, 2014
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

A scroll compressor is provided that may include a first compression chamber, a second compression chamber separated from the first compression chamber, and having a greater compression ratio than the first compression chamber, a first discharge port that communicates with the first compression chamber and provided with a first discharge inlet and a first discharge outlet, and a second discharge port separated from the first discharge port, communicating with the second compression chamber, and provided with a second discharge inlet and a second discharge outlet, the second discharge inlet having a larger sectional area than the first discharge inlet. This configuration may prevent a discharge delay in advance in each compression chamber, and thus, preventing a compression loss.

First claim

What is claimed is:

1. A scroll compressor, comprising:
a first compression chamber;
a second compression chamber separated from the first compression chamber, and having a greater compression ratio than the first compression chamber;
a first discharge port that communicates with the first compression chamber and provided with a first discharge inlet and a first discharge outlet; and
a second discharge port separated from the first discharge port, that communicates with the second compression chamber, and provided with a second discharge inlet and a second discharge outlet, the second discharge inlet having a larger sectional area than the first discharge inlet.

2. The compressor of claim 1 , wherein a sectional area of each of the discharge outlets is larger than a sectional of each of the discharge inlets.

3. The compressor of claim 2 , wherein the first discharge inlet and the first discharge outlet have different shapes from each other.

4. The compressor of claim 3 , wherein a portion of the first discharge outlet is stepped between the first discharge inlet and the first discharge outlet, to protrude further outward than an inner circumferential surface of the first discharge inlet in a radial direction, and wherein an end surface of the stepped discharge outlet is provided with a discharge guide recessed therefrom by a predetermined depth in an axial direction to communicate the first discharge inlet with the first discharge outlet.

5. The compressor of claim 2 , wherein at least one of the first discharge port or the second discharge port is formed in a manner that the discharge inlet and the discharge outlet have a same shape.

6. The compressor of claim 1 , wherein each of the first discharge port and the second discharge port is formed in a manner that the discharge outlet has a larger depth than the discharge inlet.

7. A scroll compressor, comprising:
a first scroll having a first wrap formed on one surface of a first disk, and provided with a first discharge port and a second discharge port formed through the first disk in a thickness direction in a vicinity of an inner end of the first wrap, the first discharge port and the second discharge port being eccentric from a center of the first disk;
a second scroll having a second wrap formed on one surface of a second disk and engaged with the first wrap, an outer surface of the second wrap forming a first compression chamber together with an inner surface of the first wrap and an inner surface of the second wrap forming a second compression chamber together with an outer surface of the first wrap while the second scroll orbits with respect to the first scroll, the first compression chamber and the second compression chamber communicating with the first discharge port and the second discharge port, respectively; and
a rotary shaft having an eccentric portion coupled through the second scroll to overlap the second wrap in a radial direction, wherein at least one of the first discharge port or the second discharge port is configured such that a geometric center of a discharge inlet thereof and a geometric center of a discharge outlet thereof are located on different lines from each other.

8. The compressor of claim 7 , wherein a discharge inlet that communicates with a compression chamber having a relatively high compression ratio of the first compression chamber and the second compression chamber has a larger sectional area than a discharge inlet that communicates with the other compression chamber.

9. The compressor of claim 7 , wherein a discharge inlet and a discharge outlet of at least one of the first discharge port or the second discharge port have different shapes from each other.

10. The compressor of claim 9 , wherein the discharge inlet of the at least one discharge port has a noncircular shape and the discharge outlet thereof has a circular shape, and wherein a discharge guide stepped to be larger than or equal to a depth of the discharge inlet is formed between an inner circumferential surface of the discharge inlet and an inner circumferential surface of the discharge outlet.

11. A scroll compressor, comprising:
a casing;
a drive motor provided in an inner space of the casing;
a rotary shaft coupled to the drive motor;
a frame provided adjacent to the drive motor;
a first scroll provided adjacent to the frame, having a first wrap and a first disk, and provided with a first discharge port and a second discharge port spaced apart from each other by a predetermined interval in a vicinity of an inner end of the first wrap; and
a second scroll provided between the frame and the first scroll, having a second wrap and formed on one surface of a second disk and engaged with the first scroll, the rotary shaft being eccentrically coupled, the second scroll forming a first compression chamber and a second compression chamber together with the first scroll while performing an orbiting motion with respect to the first scroll, wherein the first discharge port is provided with a first discharge inlet and a first discharge outlet in communication with the first compression chamber, and the second discharge port is provided with a second discharge inlet and a second discharge outlet in communication with the second compression chamber, and wherein the first discharge outlet has a larger sectional area than the first discharge inlet, and the second discharge outlet has a larger sectional area than the second discharge inlet.

12. The compressor of claim 11 , wherein the first discharge inlet has a noncircular cross section, and the first discharge outlet has a circular cross section, and wherein each of the second discharge inlet and the second discharge outlet has a circular cross section.

13. The compressor of claim 12 , wherein at least one of the first discharge port or the second discharge port is configured such that a geometric center of the discharge inlet thereof and a geometric center of the discharge outlet are located on different lines from each other.

14. The compressor of claim 13 , wherein a portion of an inner circumferential surface of the first discharge outlet is stepped between the first discharge inlet and the first discharge outlet, so as to protrude further outward than an inner circumferential surface of the first discharge inlet in a radial direction, and wherein a discharge guide is recessed by a predetermined depth in an axial direction from an end surface of the stepped first discharge outlet so as to communicate the first discharge inlet with the first discharge outlet.

15. The compressor of claim 14 , wherein the discharge guide has a depth larger than or equal to a depth of the first discharge inlet.

16. The compressor of claim 11 , wherein each of the first discharge inlet and the first discharge outlet has a noncircular cross section, and wherein each of the second discharge inlet and the second discharge outlet has a circular cross section.

17. The compressor of claim 11 , wherein e the first discharge inlet and the first discharge outlet each has a noncircular cross section or a circular cross section, and wherein the second discharge inlet and the second discharge outlet each has a noncircular cross section or a circular cross section.

18. The compressor of claim 11 , wherein the second discharge inlet has a larger sectional area than the first discharge inlet.

19. The compressor of claim 11 , wherein a depth of each discharge outlet is larger than a depth of each discharge inlet.

20. The compressor of claim 11 , wherein the first

Assignees

• Lg Electronics Inc

Inventors

• Choi Yongkyu
• Lee Kangwook
• Kim Cheolhwan

Classifications

• F04C18/0292

  Ports or channels located in the wrap · CPC title

• F04C18/0215 Primary

  where only one member is moving · CPC title

• F04C2250/102

  of the outlet · CPC title

• F04C18/0261 Primary

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

• F04C23/008

  Hermetic pumps · CPC title