Swash plate compressor

Patent metadata

Field	Value
Publication number	US-12037995-B2
Application number	US-201917309148-A
Country	US
Kind code	B2
Filing date	Dec 2, 2019
Priority date	Dec 12, 2018
Publication date	Jul 16, 2024
Grant date	Jul 16, 2024

Abstract

A swash plate compressor includes a cylinder block accommodating a piston for compressing a refrigerant, a front housing coupled to the cylinder block and having a crank chamber, a rear housing having a suction chamber and a discharge chamber and coupled to the cylinder block, and a suction reed plate inserted between a valve plate and the cylinder block. The swash plate compressor includes: a first orifice hole through which the refrigerant in the crank chamber passes; a second orifice hole communicating between the first orifice hole and the suction chamber; an intermediate flow path configured to connect the first orifice hole and the second orifice hole; and the valve plate inserted into the rear housing and having a suction chamber pressure-maintaining space connected to the suction chamber and configured to maintain a pressure equal to a pressure in the suction chamber.

First claim

The invention claimed is:

1. A swash plate compressor comprising
a cylinder block configured to accommodate a piston for compressing a refrigerant;
a front housing coupled to a front side of the cylinder block and having a crank chamber;
a rear housing having a suction chamber and a discharge chamber and coupled to a rear side of the cylinder block; and
a gasket inserted into the cylinder block, and a suction reed plate inserted between a valve plate and the cylinder block, the swash plate compressor further comprising:
a first orifice hole through which the refrigerant in the crank chamber passes;
a second orifice hole communicating with the suction chamber and configured to discharge the refrigerant passing through the first orifice hole to the suction chamber; and
an intermediate flow path configured to connect the first orifice hole and the second orifice hole; and the valve plate inserted between the cylinder block and the rear housing and having a suction chamber pressure-maintaining space connected to the suction chamber and configured to maintain a pressure equal to a pressure in the suction chamber, wherein the valve plate further comprises a first valve plate through hole penetratively formed in the valve plate to connect the suction chamber pressure-maintaining space and the suction chamber; and wherein the second orifice hole is formed from a second valve plate through hole penetratively formed in the valve plate and spaced apart from the first valve plate through hole.

2. The swash plate compressor of claim 1 , wherein the suction chamber pressure-maintaining space is recessed in the valve plate.

3. The swash plate compressor of claim 1 , further comprising:
a variable reed having one end connected to the suction reed plate, and an other end formed as a free end, wherein an opening degree of the variable reed is changed in accordance with a pressure of the refrigerant.

4. The swash plate compressor of claim 3 , wherein the variable reed is provided to be displaced into the suction chamber pressure-maintaining space.

5. The swash plate compressor of claim 4 , wherein the first valve plate through hole is provided to be closed when the variable reed is displaced into the suction chamber pressure-maintaining space.

6. The swash plate compressor of claim 5 , wherein the gasket comprises a gasket hole formed to face the variable reed such that the refrigerant passes through the gasket hole.

7. The swash plate compressor of claim 6 , wherein the variable reed is formed to close the gasket hole and comprises a variable reed hole penetratively formed to face the gasket hole.

8. The swash plate compressor of claim 7 , wherein the variable reed hole has a diameter smaller than a diameter of the gasket hole, and the variable reed hole is disposed in a direction of a central axis of the gasket hole so as to be coaxial with the gasket hole.

9. The swash plate compressor of claim 7 , wherein the variable reed hole is spaced apart from the first valve plate through hole in an axial direction of the first valve plate through hole with the suction chamber pressure-maintaining space interposed therebetween, and a part of the variable reed hole, which is adjacent to the suction chamber pressure-maintaining space, overlaps a portion of the first valve plate through hole which is adjacent to the suction chamber pressure-maintaining space.

10. The swash plate compressor of claim 9 , wherein the free end of the variable reed comes into contact with a portion of the valve plate between the first through hole and the second through hole when the variable reed is opened.

11. The swash plate compressor of claim 9 , wherein the variable reed is formed to open at least a part of the gasket hole.

12. The swash plate compressor of claim 1 , wherein the cylinder block has a through-portion extending between the crank chamber and the first orifice hole.

13. The swash plate compressor of claim 12 , wherein the first orifice hole is formed in the suction reed plate.

14. The swash plate compressor of claim 1 , wherein the intermediate flow path comprises a buffer space communicating with the suction chamber pressure-maintaining space.

15. The swash plate compressor of claim 14 , wherein the buffer space is disposed between one end of the cylinder block and the gasket.

16. The swash plate compressor of claim 15 , wherein the buffer space communicates with the second orifice hole.

17. A swash plate compressor comprising:
a cylinder block configured to accommodate a piston for compressing a refrigerant;
a front housing coupled to a front side of the cylinder block and having a crank chamber;
a rear housing having a suction chamber and a discharge chamber and coupled to a rear side of the cylinder block; and
a gasket inserted into the cylinder block, and a suction reed plate inserted between a valve plate and the cylinder block, the swash plate compressor further comprising:
a first orifice hole through which the refrigerant in the crank chamber passes;
a second orifice hole communicating with the suction chamber and configured to discharge the refrigerant passing through the first orifice hole to the suction chamber;
an intermediate flow path configured to connect the first orifice hole and the second orifice hole; and the valve plate inserted between the cylinder block and the rear housing and having a suction chamber pressure-maintaining space connected to the suction chamber and configured to maintain a pressure equal to a pressure in the suction chamber; and
a variable reed having one end connected to the suction reed plate, and the other end formed as a free end, wherein an opening degree of the variable reed is changed in accordance with a pressure of the refrigerant, wherein the first orifice hole is formed along a part of an outer circumferential portion of the variable reed.

Assignees

• Hanon Systems

Inventors

• Jeong You Cheol
• Son Eun Gi
• Ahn Hew Nam
• Yoo Jun Ha
• Yun Je Su

Classifications

• F04B39/1073

  the members being reed valves · CPC title

• F04B27/1009 Primary

  Distribution members · CPC title

• F04B39/123

  Fluid connections · CPC title

• F04B27/1081

  Casings, housings · CPC title

• F04B39/1066

  Valve plates · CPC title