US2021381601A1PendingUtilityA1

Hydrodynamic sealing component and assembly

69
Assignee: EATON INTELLIGENT POWER LTDPriority: Dec 21, 2016Filed: Aug 25, 2021Published: Dec 9, 2021
Est. expiryDec 21, 2036(~10.4 yrs left)· nominal 20-yr term from priority
Inventors:Edward N. Ruggeri
F16J 15/3412
69
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

A hydrodynamic sealing component includes a land portion and a plurality of hydrodynamic grooves. The hydrodynamic sealing component may include sets of shallow grooves and deep grooves. In embodiments, the hydrodynamic sealing component may include alternating shallow grooves and deep grooves, or alternating pairs of shallow grooves and pairs of deep grooves. In embodiments, a hydrodynamic sealing component may include at least three sets of hydrodynamic grooves, wherein each set of hydrodynamic grooves may have a different depth, which may be configured to create or maintain hydrodynamic forces over a different operational range. In embodiments, a hydrodynamic sealing component may have a surface area of lands-to-grooves is 1:1 or less. A sealing assembly, which may include a rotor with hydrodynamic grooves on a sealing surface, is also disclosed.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A hydrodynamic sealing component, comprising:
 a land portion; and   at least two sets of hydrodynamic grooves, each set of hydrodynamic grooves extending around at least a portion of a circumference of a sealing face;   wherein the at least two sets of hydrodynamic grooves each extend to at or about an inner diameter edge of the hydrodynamic sealing component; the at least two sets of hydrodynamic grooves include a set of shallow grooves and a set of deep grooves; and the shallow grooves have a depth that is less than the depth of the deep grooves.   
     
     
         2 . The hydrodynamic sealing component of  claim 1 , wherein the shallow grooves and deep grooves alternate around a circumference of a face of the hydrodynamic sealing component. 
     
     
         3 . The hydrodynamic sealing component of  claim 1 , wherein the shallow grooves and the deep grooves are offset radially inward from an outer diameter of the hydrodynamic sealing component. 
     
     
         4 . The hydrodynamic sealing component of  claim 1 , wherein the shallow grooves and the deep grooves are provided at an angle coming off the inner diameter edge that is less than about 15 degrees. 
     
     
         5 . The hydrodynamic sealing component of  claim 2 , wherein the shallow grooves and the deep grooves are offset radially inward from an outer diameter of the hydrodynamic sealing component. 
     
     
         6 . The hydrodynamic sealing component of  claim 1 , wherein the shallow grooves and the deep grooves are each provided in pairs, and the pairs of shallow grooves and the pairs of deep grooves alternate around a circumference of the hydrodynamic sealing component. 
     
     
         7 . The hydrodynamic sealing component of  claim 6 , wherein the shallow grooves and the deep grooves are offset radially inward from an outer diameter of the hydrodynamic sealing component. 
     
     
         8 . The hydrodynamic sealing component of  claim 1 , wherein the shallow grooves and the deep grooves are provided at an angle coming off the inner diameter edge that is about 8 degrees ±2 degrees. 
     
     
         9 . The hydrodynamic sealing component of  claim 1 , wherein at least one of the shallow grooves and the deep grooves have a substantially consistent depth. 
     
     
         10 . The hydrodynamic sealing component of  claim 1 , wherein the shallow grooves and the deep grooves have depths within a range of about 0.000425 in. to about 0.000080 in. 
     
     
         11 . The hydrodynamic sealing component of  claim 1 , wherein a maximum depth of the deep grooves is about 0.001 in. or less. 
     
     
         12 . The hydrodynamic sealing component of  claim 1 , wherein the depth of the shallow grooves is about 0.0003 in. 
     
     
         13 . The hydrodynamic sealing component of  claim 1 , wherein the depth of the shallow grooves is about 0.00035 in. to about 0.00040 in. 
     
     
         14 . The hydrodynamic sealing component of  claim 1 , wherein at least some of the at least two sets of hydrodynamic grooves include a tapered portion. 
     
     
         15 . The hydrodynamic sealing component of  claim 1 , wherein at least one of the shallow grooves or the deep grooves extends more than 60° circumferentially around a face of the hydrodynamic sealing component. 
     
     
         16 . The hydrodynamic sealing component of  claim 1 , wherein at least one of the shallow grooves or the deep grooves extends more than 72° circumferentially around a face of the hydrodynamic sealing component. 
     
     
         17 . The hydrodynamic sealing component of  claim 1 , wherein at least one of the shallow grooves and the deep grooves are provided at an angle coming off an inner diameter that is less than about 15°. 
     
     
         18 . The hydrodynamic sealing component of  claim 1 , wherein at least one of the shallow grooves and the deep grooves are provided at an angle coming off an inner diameter that is less than about 10°. 
     
     
         19 . The hydrodynamic sealing component of  claim 1 , wherein a ratio of surface area of lands-to-grooves is 1:1 or less. 
     
     
         20 . The hydrodynamic sealing component of  claim 1 , wherein a ratio of surface area of lands-to-grooves is 0.75:1 or less. 
     
     
         21 . The hydrodynamic sealing component of  claim 1 , wherein the depth of each set of hydrodynamic grooves is configured to create or maintain hydrodynamic forces over a different operational range. 
     
     
         22 . The hydrodynamic sealing component of  claim 1 , wherein the shallow grooves and deep grooves have substantially the same length.

Cited by (0)

No later patents cite this yet.

References (0)

No backward citations on record.