Scroll refrigeration compressor

Patent metadata

Field	Value
Publication number	US-9506470-B2
Application number	US-201213690833-A
Country	US
Kind code	B2
Filing date	Nov 30, 2012
Priority date	Nov 30, 2011
Publication date	Nov 29, 2016
Grant date	Nov 29, 2016

Abstract

The scroll refrigeration compressor according to the invention includes a sealed enclosure at least partially defining a discharge chamber designed to be connected to a discharge line, and a discharge valve attached on the sealed enclosure and fluidly connected to the discharge chamber. The discharge valve includes a valve body, a valve seat, and a discharge check valve movable between a covering position and a released position. The discharge valve includes deflection means positioned in the valve body and arranged to orient the flow of refrigerant coming from the discharge line at least partially toward the periphery of the discharge check valve.

First claim

The invention claimed is:

1. A scroll refrigeration compressor, comprising a sealed enclosure at least partially delimiting a discharge chamber designed to be connected to a discharge line, and a discharge valve attached on the sealed enclosure and fluidly connected to the discharge chamber, the discharge valve comprising:
a valve body,
a valve seat,
a discharge check valve movable between a covering position, in which the discharge check valve bears against the valve seat, and a released position, in which the discharge check valve is remote from the valve seat,
a guide device positioned in the valve body and configured to guide the discharge check valve between the covering position and the released position, the guide device including at least a first metal guide part and a second metal guide part respectively including a first assembly portion and a second assembly portion, the first assembly portion and the second assembly portion being substantially planar, the first assembly portion being attached to the second assembly portion, the first metal guide part and the second metal guide part delimiting a housing configured to house the discharge check valve, and
a deflector element positioned in the valve body and opposite the valve seat relative to the discharge check valve, the deflector element being configured to orient a flow of refrigerant coming from the discharge line at least partially toward the periphery of the discharge check valve,
wherein at least one of the at least first metal guide part and the second metal guide part has at least one flap extending from the respective one of the first assembly portion and the second assembly portion, the at least one flap being monolithically integral with the respective one of the first assembly portion and the second assembly portion, the at least one flap at least partially forming the deflector element, and
wherein the first assembly portion is attached to the second assembly portion so that the first assembly portion and the second assembly portion have a cross-shaped transverse section.

2. The compressor according to claim 1 , wherein the deflector element extends transverse to an axis (A) of the discharge valve.

3. The compressor according to claim 1 , wherein the deflector element and the valve body delimit at least one peripheral flow passage.

4. The compressor according to claim 3 , wherein the deflector element and the valve body delimit a plurality of peripheral flow passages distributed around the deflector element.

5. The compressor according to claim 3 , wherein the deflector element and the valve body delimit an annular peripheral flow passage.

6. The compressor according to claim 1 , wherein the deflector element delimits an obstruction section corresponding to approximately at least 30% of an obstruction section of the discharge check valve.

7. The compressor according to claim 1 , wherein the deflector element includes at least one axial stop surface against which the discharge check valve can bear in the released position.

8. The compressor according to claim 1 , wherein the deflector element is mounted on the guide device.

9. The compressor according to claim 1 , wherein each of the first metal guide part and the second metal guide part has two lateral branches extending from the respective one of the first assembly portion and the second assembly portion and configured to guide the discharge check valve between the covering position and the released position.

10. The compressor according to claim 1 , wherein the discharge valve comprises a return element configured to return the discharge check valve to the covering position.

11. A scroll refrigeration compressor, comprising a sealed enclosure at least partially delimiting a discharge chamber designed to be connected to a discharge line, and a discharge valve attached on the sealed enclosure and fluidly connected to the discharge chamber, the discharge valve comprising:
a valve body,
a valve seat,
a discharge check valve movable between a covering position, in which the discharge check valve bears against the valve seat, and a released position, in which the discharge check valve is remote from the valve seat,
a guide device positioned in the valve body and configured to guide the discharge check valve between the covering position and the released position, the guide device including a first metal guide piece and a second metal guide piece respectively including a first assembly portion and a second assembly portion, the first assembly portion and the second assembly portion being substantially planar, the first assembly portion and the second assembly portion being separate structures, the first assembly portion being assembled and attached to the second assembly portion, the first metal guide piece and the second metal guide piece delimiting a housing configured to house the discharge check valve, and
a deflector element positioned in the valve body and opposite the valve seat relative to the discharge check valve, the deflector element being configured to orient a flow of refrigerant coming from the discharge line at least partially toward the periphery of the discharge check valve,
wherein at least one of the first metal piece and the second metal piece has at least one flap extending from the respective one of the first assembly portion and the second assembly portion, the at least one flap being monolithically integral with the respective one of the first assembly portion and the second assembly portion, the at least one flap at least partially forming the deflector element, and
wherein the first assembly portion is attached to the second assembly portion so that the first assembly portion and the second assembly portion have a substantially cross-shaped transverse section.

12. A scroll refrigeration compressor, comprising a sealed enclosure at least partially delimiting a discharge chamber designed to be connected to a discharge line, and a discharge valve attached on the sealed enclosure and fluidly connected to the discharge chamber, the discharge valve comprising:
a valve body,
a valve seat,
a discharge check valve movable between a covering position, in which the discharge check valve bears against the valve seat, and a released position, in which the discharge check valve is remote from the valve seat,
a guide device positioned in the valve body and configured to guide the discharge check valve between the covering position and the released position, the guide device including a first metal guide part and a second metal guide part delimiting a housing configured to house the discharge check valve, the first metal guide part including a first assembly portion and two lateral branches extending from the first assembly portion, the second metal guide part including a second assembly portion and two lateral branches extending from the second assembly portion, the first assembly portion and the second assembly portion being substantially planar, the first assembly portion being attached to the second assembly portion and the lateral branches of the first metal guide part and the second metal guide part being configured to guide the discharge check valve between the covering position and the released position, and
a deflector element positioned in the valve body and opposite the valve seat relative to the discharge check valve, the deflector element being configured to orient a flow of refrigerant coming from the discharge line at least partially toward the periphery of the discharge check valve,
wherein at least one of the at least first metal guide part and the second metal guide part has at least one flap extending from the respective

Assignees

• Danfoss Commercial Compressors

Inventors

• Ginies Pierre
• Gross Dominique
• Ancel Christophe
• Rosson Yves
• Dugast Philippe

Classifications

• F04C29/126

  of the non-return type · CPC title

• F04C23/008 Primary

  Hermetic pumps · CPC title

• F04C29/124 Primary

  with inlet and outlet valves specially adapted for rotary or oscillating piston pumps · CPC title

• F04C18/0207

  both members having co-operating elements in spiral form · CPC title