Compressor sealing element arrangement near stator for controlling gaseous fluid flow there through

Patent metadata

Field	Value
Publication number	US-12305646-B2
Application number	US-202017597210-A
Country	US
Kind code	B2
Filing date	Oct 7, 2020
Priority date	Oct 15, 2019
Publication date	May 20, 2025
Grant date	May 20, 2025

Abstract

An apparatus comprising a stator and a rotor which are arranged inside a housing extending along a common longitudinal axis, wherein the stator encloses the rotor in a radial direction. A space is formed between an inside of a wall of the housing and an outside of a wall of the stator. The housing has a first housing element and a second housing element that are arranged with their contact surfaces aligned with each other thus sealing the housing. Thereby, a sealing element is arranged between the contact surfaces of the housing elements. The sealing element has the shape of an annular disc with a circumferential form and at least one sealing area. In the circumferential direction, the form corresponds to a contour of the contact surfaces. The sealing area is designed to at least partially enclose the space.

First claim

The invention claimed is:

1. An apparatus for compressing a gaseous fluid, comprising:
a stator and a rotor which are arranged in such a way as to extend along a common longitudinal axis within a housing such that the stator encloses the rotor in a radial direction, and in that a space is formed between an inner side of a wall of the housing and an outer side of a wall of the stator, wherein the housing is formed from a first housing element and a second housing element, which are each arranged with mutually aligned contact surfaces closing the housing and resting against one another, wherein a sealing element is arranged between the contact surfaces, wherein the sealing element has a shape of an annular disc with a constant width, wherein the sealing element further includes a circumferentially extending form and at least one first sealing area, wherein the form corresponds in a circumferential direction to a contour of the contact surfaces and the at least one first sealing area partially closes the space between the inner side of the wall of the housing and the outer side of the wall of the stator, and wherein an outer diameter of the sealing element substantially corresponds to an outer diameter of the contact surfaces and an inner diameter of the sealing element substantially corresponds to a diameter of the outer side of the wall of the stator such that the sealing element abuts against the outer side of the wall of the stator.

2. The apparatus according to claim 1 , wherein the sealing element has at least one second sealing area which is a closed surface.

3. The apparatus according to claim 1 , wherein the at least one first sealing area is formed with at least one flow opening and/or at least one recess for the fluid to pass through.

4. The apparatus according to claim 3 , wherein the at least one flow opening is formed with a circular or oval flow cross-section.

5. The apparatus according to claim 3 , wherein the at least one recess has a shape of a notch which is formed extending radially outwards from an inner edge arranged on the inner diameter of the sealing element.

6. The apparatus according to claim 1 , wherein the at least one first sealing area affects a flow direction of the gaseous fluid and is arranged in a plane perpendicular to the longitudinal axis of the apparatus and is aligned to protrude within a main flow direction of the gaseous fluid through the apparatus.

7. The apparatus according to claim 1 , wherein the stator and the rotor are arranged within the first housing element.

8. The apparatus according to claim 1 , wherein the first housing element has an inlet for aspiration of the gaseous fluid into the housing.

9. The apparatus according to claim 1 , wherein a compression mechanism is arranged within the second housing element.

10. The apparatus according to claim 1 , wherein the space formed between the inner side of the wall of the housing and the outer side of the wall of the stator has a shape of a circular cylindrical ring.

11. The apparatus according to claim 1 , wherein the form is formed to be crowned-shaped on an upper side and a lower side of the sealing element.

12. A method for operating the apparatus for compressing the gaseous fluid according to claim 1 , wherein the gaseous fluid is introduced through an inlet into the first housing element of the housing, and the stator arranged in the first housing element and the rotor for driving a compression mechanism are acted upon by the gaseous fluid, wherein the gaseous fluid is passed through a space formed between adjacently disposed coils of the stator, a space formed between the stator and the rotor, as well as the rotor, wherein the gaseous fluid is then directed into the second housing element to the compression mechanism through the sealing element disposed between the first housing element and the second housing element, wherein a partial mass flow of the gaseous fluid conducted through the space formed between the inner side of the wall of the housing and the outer side of the wall of the stator as a bypass flow through the first housing element is controlled by means of the sealing element arranged between the first housing element and the second housing element.

13. The method according to claim 12 , wherein a flow direction of the partial mass flow is directed in a focused manner to a compression mechanism by means of the sealing element upon entering the second housing element.

Assignees

• Hanon Systems

Inventors

• Gutberlet Dirk
• Friedl Michael
• Dursun Kadir

Classifications

• F04B39/121

  Casings · CPC title

• F04C27/008

  for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine · CPC title

• F04C2240/30

  Casings or housings · CPC title

• H02K1/22

  Rotating parts of the magnetic circuit · CPC title

• H02K1/146

  consisting of a generally annular yoke with salient poles · CPC title