Compressor having suction fitting

Patent metadata

Field	Value
Publication number	US-11767838-B2
Application number	US-202015930785-A
Country	US
Kind code	B2
Filing date	May 13, 2020
Priority date	Jun 14, 2019
Publication date	Sep 26, 2023
Grant date	Sep 26, 2023

Abstract

A compressor includes a shell assembly, a compression mechanism and a suction fitting. The shell assembly defines a chamber. The compression mechanism is disposed within the chamber of the shell assembly and includes a suction inlet. The suction fitting is attached to the shell assembly and extends at least partially into the chamber of the shell assembly. The suction fitting defines first and second openings. The suction fitting directs working fluid through the first opening towards the compression mechanism and the suction fitting directs working fluid through the second opening away from the compression mechanism.

First claim

What is claimed is:

1. A compressor comprising:
a shell assembly defining a chamber and a shell opening;
a compression mechanism disposed within the chamber of the shell assembly; and
a suction fitting attached to the shell assembly and extending through the shell opening, the suction fitting including a portion extending into the chamber of the shell assembly, the portion of the suction fitting defining first and second openings,
wherein the suction fitting directs working fluid through the first opening towards the compression mechanism and the suction fitting directs working fluid through the second opening away from the compression mechanism,
wherein the portion of the suction fitting is sized and shaped such that the portion of the suction fitting can be inserted through the shell opening with the portion attached to the rest of the suction fitting,
wherein the portion of the suction fitting has an axial end wall that defines the first opening at an axial end of the suction fitting,
wherein the axial end wall extends radially inward relative to an inner diametrical surface of the portion of the suction fitting,
wherein the first and second openings extend through the inner diametrical surface,
wherein the inner diametrical surface is a cylindrical surface defined by a longitudinal axis that extends through the shell opening and through the axial end wall; and
wherein the first opening has a larger area than the second opening such that a greater volume of working fluid flowing through the suction fitting flows out of the first opening than the second opening.

2. The compressor of claim 1 , further comprising a motor disposed within the chamber and driving the compression mechanism, and wherein the suction fitting directs working fluid through the second opening towards the motor.

3. The compressor of claim 2 , wherein the axial end wall deflects working fluid flowing through the suction fitting towards the first and second openings.

4. The compressor of claim 2 , wherein the first and second openings extend radially through the inner diametrical surface of the suction fitting and an outer diametrical surface of the suction fitting.

5. The compressor of claim 1 , wherein the second opening is an elongated slot, and wherein the first and second openings extend radially through the inner diametrical surface of the suction fitting and an outer diametrical surface of the suction fitting.

6. The compressor of claim 5 , wherein the first and second openings are arcuate.

7. The compressor of claim 5 , wherein a base plate is attached to the axial end of the suction fitting and cooperates with the suction fitting to define the first and second openings, wherein the base plate deflects working fluid flowing through the suction fitting towards the first and second openings.

8. The compressor of claim 1 , wherein the axial end wall is flat and has a diameter that is no larger than a diameter of the shell opening.

9. The compressor of claim 8 , wherein the suction fitting is a one-piece unitary body.

10. A compressor comprising:
a shell assembly defining a chamber;
a compression mechanism disposed within the chamber of the shell assembly and including a suction inlet;
a motor disposed within the chamber and driving the compression mechanism; and
a suction fitting assembly including a suction fitting and a deflector, the suction fitting attached to the shell assembly and extending at least partially into the chamber, the deflector is attached to the suction fitting,
wherein a first portion of working fluid exiting the suction fitting flows to the suction inlet of the compression mechanism and a second portion of working fluid exiting the suction fitting is directed toward the motor via the deflector,
wherein the deflector includes a first body portion and a second body portion extending from the first body portion, and wherein the first body portion defines a channel that directs the second portion of working fluid flowing therethrough toward the motor,
wherein the deflector includes a plurality of resiliently flexible members extending from the second body portion, and wherein the plurality of resiliently flexible members snap into engagement with the suction fitting, and
wherein the deflector includes tabs that extends outwardly from ends of the first body portion, and wherein the tabs contact the shell assembly to bias the deflector against the suction fitting.

11. The compressor of claim 10 , wherein the suction fitting includes an outlet opening, and wherein the first body portion divides the outlet opening into a first outlet opening section and a second outlet opening section.

12. The compressor of claim 11 , wherein the first portion of working fluid exits the suction fitting through the first outlet opening section and the second portion of working fluid exits the suction fitting through the second outlet opening section.

13. The compressor of claim 12 , wherein a partition extends from an end of the first body portion toward the suction fitting, and wherein the partition prevents the second portion of working fluid flowing through the second outlet opening section from flowing toward the compression mechanism.

14. A compressor comprising:
a shell assembly defining a chamber and a shell opening;
a compression mechanism disposed within the chamber of the shell assembly; and
a suction fitting attached to the shell assembly and extending through the shell opening, the suction fitting including a portion extending into the chamber of the shell assembly, the portion of the suction fitting defining a first opening and including an axial end wall,
wherein the suction fitting directs working fluid through the first opening towards the compression mechanism,
wherein the portion of the suction fitting is sized and shaped such that the portion of the suction fitting can be inserted through the shell opening with the portion attached to the rest of the suction fitting,
wherein the axial end wall defines an axial end of the suction fitting,
wherein the axial end wall extends radially inward relative to an inner diametrical surface of the portion of the suction fitting, and
wherein the first opening in the suction fitting extends through the axial end wall and through the inner diametrical surface,
wherein the inner diametrical surface is a cylindrical surface defined by a longitudinal axis that extends through the shell opening and through the axial end wall,
wherein the portion of the suction fitting defines a second opening, and
wherein the second opening is an elongated slot, and wherein the first and second openings extend radially through the inner diametrical surface of the suction fitting and an outer diametrical surface of the suction fitting.

15. The compressor of claim 14 , wherein the first opening is formed at the axial end of the suction fitting.

16. The compressor of claim 14 , wherein the axial end wall deflects working fluid flowing through the suction fitting towards the first opening.

17. The compressor of claim 14 , wherein the axial end wall is flat and has a diameter that is no larger than a diameter of the shell opening.

18. The compressor of claim 17 , wherein the suction fitting is a one-piece unitary body.

19. The compressor of claim 14 , wherein one of the first and second openings has a larger area than the other of the first and second openings.

Assignees

• Emerson Climate Technologies
• Copeland Lp

Inventors

• Stover Robert C
• Knippen Keith M

Classifications

• F04B39/123 Primary

  Fluid connections · CPC title

• F04C29/12

  Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet · CPC title

• F04C23/008 Primary

  Hermetic pumps · CPC title

• F04B39/06

  Cooling; Heating; Prevention of freezing · CPC title

• F04C29/042

  by injecting a fluid (injection of fluid for sealing, cooling or lubrication F04C29/0007) · CPC title