Search

US-20260126042-A1 - SCROLL COMPRESSOR

US20260126042A1US 20260126042 A1US20260126042 A1US 20260126042A1US-20260126042-A1

Abstract

A scroll compressor for compressing a fluid, the scroll compressor has a compressor housing with fluid inlet and outlet openings, a scroll carrier fixed to the housing, having a housing-fixed scroll, and a movable scroll carrier with a movable scroll. In order to compress the fluid, a fluid flow duct leads from the fluid inlet opening through intermediate spaces between the scrolls to the fluid outlet opening and a first seal receiving groove with a first spiral seal arranged therein and having a first sealing surface is formed in the movable scroll, and a second seal receiving groove with a second spiral seal arranged therein and having a second sealing surface is formed in the scroll which is fixed to the housing. Pressurization lines open in each case on a side of the respective spiral seal opposite the respective sealing surface into the respective seal receiving groove.

Inventors

  • Florian Karl AUSSERER

Assignees

  • AUSSERER GMBH

Dates

Publication Date
20260507
Application Date
20221025

Claims (11)

  1. 1 . A scroll compressor for compressing a fluid, the scroll compressor comprising: a compressor housing with a fluid inlet opening and a fluid outlet opening; a scroll carrier, which is fixed to the housing and has a fixed scroll, which is fixed to the housing, arranged in a fixed position in the compressor housing; a movable scroll carrier with a movable scroll is movably arranged in the compressor housing, and the movable scroll is drivable by an eccentric of the scroll compressor; wherein, in order to compress the fluid, a fluid flow duct leads from the fluid inlet opening through intermediate spaces between the fixed and movable scrolls to the fluid outlet opening; and, in an end face of the movable scroll that faces away from the movable scroll carrier, a first seal receiving groove with a first spiral seal arranged therein is formed, wherein the movable scroll abuts with a first sealing surface of the first spiral seal against the scroll carrier which is fixed to the housing; and, in an end face of the scroll, which is fixed to the housing, which end face faces away from the scroll carrier, which is fixed to the housing, a second seal receiving groove with a second spiral seal arranged therein is formed; wherein the scroll, which is fixed to the housing, abuts with a second sealing surface of the second spiral seal against the movable scroll carrier; first pressurization lines lead from the intermediate spaces through the movable scroll into the first seal receiving groove and second pressurization lines lead from the intermediate spaces through the scroll, which is fixed to the housing, into the second seal receiving groove; and wherein the first pressurization lines open on a side of the first spiral seal opposite the first sealing surface into the first seal receiving groove and the second pressurization lines open on a side of the second spiral seal opposite the second sealing surface into the second seal receiving groove.
  2. 2 . The scroll compressor as claimed in claim 1 , wherein the first pressurization lines each comprise at least one bore in the movable scroll and the second pressurization lines each comprise at least one bore in the scroll, which is fixed to the housing.
  3. 3 . The scroll compressor as claimed in claim 1 , wherein the first pressurization lines and the second pressurization lines each have an angled profile.
  4. 4 . The scroll compressor as claimed in claim 3 , wherein the first pressurization lines and the second pressurization lines each have a different diameter on one side of an angled portion than on an opposite side of the respective angled profile.
  5. 5 . The scroll compressor as claimed in claim 3 , wherein the first pressurization lines and the second pressurization lines each have a larger diameter on one side of an angled portion thereof facing the respective intermediate space than on an opposite side.
  6. 6 . The scroll compressor as claimed in claim 1 , further comprising a connecting bolt, which is mounted displaceably in a slot in the scroll carrier, which is fixed to the housing, and is mounted displaceably in a slot in the movable scroll carrier.
  7. 7 . The scroll compressor as claimed in claim 6 , the respective slots in the scroll carrier and the movable scroll carrier, as seen in a top view, are arranged at an acute angle relative to each other.
  8. 8 . The scroll compressor as claimed in claim 1 , further comprising first cover covering the respective first pressurization line is in each case arranged in the first seal receiving groove between the first spiral seal arranged therein and the first pressurization lines opening into the first seal receiving groove, and a second cover covering the respective second pressurization line is in each case arranged in the second seal receiving groove between the second spiral seal arranged therein and the second pressurization lines which open into the second seal receiving groove.
  9. 9 . The scroll compressor as claimed in claim 1 , wherein the first spiral seal comprises a first insert part and is inserted into the first seal receiving groove and the second spiral seal comprises a second insert part and is inserted into the second seal receiving groove.
  10. 10 . The scroll compressor as claimed in claim 1 , wherein any the first spiral seal is injected into the first seal receiving groove as an injection molded part or is imprinted as a 3D printed part.
  11. 11 . The scroll compressor as claimed in claim 1 , wherein the second spiral seal is injected into the second seal receiving groove as an injection molded part or imprinted as a 3D printed part.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a 371 Natioal Phase of International Application No. PCT/AT 2022/000014, filed Oct. 25, 2022, which is incorporated herein by reference as if fully set forth. TECHNICAL FIELD The invention relates to a scroll compressor for compressing a fluid, in particular a gas, wherein the scroll compressor has a compressor housing with a fluid inlet opening and a fluid outlet opening, and a scroll carrier, which is fixed to the housing and has a scroll, which is fixed to the housing, is arranged in a fixed position in the compressor housing, and a movable scroll carrier with a movable scroll is movably arranged in the compressor housing, and the movable scroll is drivable by means of an eccentric of the scroll compressor, wherein, in order to compress the fluid, a fluid flow duct leads from the fluid inlet opening through intermediate spaces between the scrolls to the fluid outlet opening and, in an end face of the movable scroll that faces away from the movable scroll carrier, a first seal receiving groove with a first spiral seal arranged therein is formed, wherein the movable scroll abuts with a first sealing surface of the first spiral seal against the scroll carrier, which is fixed to the housing, and, in an end face of the scroll, which is fixed to the housing, which end face faces away from the scroll carrier, which is fixed to the housing, a second seal receiving groove with a second spiral seal arranged therein is formed, wherein the scroll, which is fixed to the housing, abuts with a second sealing surface of the second spiral seal against the movable scroll carrier, and wherein first pressurization lines lead from the intermediate spaces through the movable scroll into the first seal receiving groove and second pressurization lines lead from the intermediate spaces through the scroll, which is fixed to the housing, into the second seal receiving groove. BACKGROUND Such scroll compressors are known in the prior art. They are also frequently referred to as spiral compressors. CN 109058111 A discloses prior art of the type in question. In this document, the pressurization line opens in each case laterally into the seal receiving groove. In this document, whether or not the pressurization line is covered by the spiral seal depends on the position of the spiral seal in the seal receiving groove. SUMMARY It is the object of the invention to improve a scroll compressor of the type mentioned at the beginning. For this purpose, the invention provides that the first pressurization lines open on a side of the first spiral seal opposite the first sealing surface into the first seal receiving groove and the second pressurization lines open on a side of the second spiral seal opposite the second sealing surface into the second seal receiving groove. A substantial advantage of the fact that the respective pressurization lines open on the side of the respective spiral seal opposite the respective sealing surface into the respective seal receiving groove is that the spiral seal can be pressurized on its side opposite the sealing surface via the respective pressurization line, irrespective of its position in the seal receiving groove. In contrast to the prior art mentioned at the beginning, it is not possible for the respective spiral seal to cover or close the respective pressurization line in such a way that pressurization via the pressurization line is prevented. A further advantage of the invention is that the respective spiral seal can be installed preloaded in the respective seal receiving groove, even in the idle state. In addition, the invention permits the spiral seal also to be automatically readjusted over its entire life cycle in the event of wear, since it is always ensured that the respective spiral seal can be pressurized on the side opposite the respective sealing surface. Preferably, the respective pressurization line opens at its end opposite the respective seal receiving groove in the region of a side wall of the respective scroll, which side wall faces an intermediate space between the scrolls and is arranged between the respective end face of the respective scroll and the respective scroll carrier of the respective scroll. This applies both to the movable scroll with its movable scroll carrier and the end face facing away from the movable scroll carrier and also to the first seal receiving groove arranged there, and to the scroll, which is fixed to the housing, with the scroll carrier, which is fixed to the housing, and the end face facing away from the scroll carrier, which is fixed to the housing, and the second seal receiving groove arranged there. Scroll compressors according to the invention may also be referred to as spiral compressors. They are primarily used for compressing gas, with the term gas also including mixtures of different gases. The fluid to be compressed by means of the scroll compressor according to the invention may, however