Co-Rotating Scroll Compressor Having Synchronization Mechanism

Patent metadata

Field	Value
Publication number	US-2023145998-A1
Application number	US-202117519721-A
Country	US
Kind code	A1
Filing date	Nov 5, 2021
Priority date	Nov 5, 2021
Publication date	May 11, 2023
Grant date	—

Abstract

A compressor includes a shell, a first compression member, a bearing housing and a second compression member. The first compression member is rotatable relative to the shell about a first axis. The bearing housing is coupled to the first compression member and rotatable relative to the shell about the first axis. The bearing housing includes a first pin that extends therefrom. The second compression member is rotatable relative to the shell about a second axis. The second compression member includes a base plate and an arcuate-shaped first pin pocket. The first pin pocket is formed in the base plate and receives the first pin. The first compression member is moveable between a first position in which the first pin is engaged with a surface of the first pin pocket and a second position in which the first pin is disengaged from the surface of the first pin pocket.

First claim

1 . A compressor comprising:
a shell assembly; a first compression member rotatable relative to the shell assembly about a first axis; a bearing housing coupled to the first compression member and rotatable relative to the shell assembly about the first axis, the bearing housing including a first pin extending therefrom; and a second compression member rotatable relative to the shell assembly about a second axis that is spaced apart from the first axis, the second compression member cooperates with the first compression member to define fluid pockets, the second compression member including a base plate and a first pin pocket, the first pin pocket formed in the base plate and receiving the first pin, wherein the first compression member is moveable between a first position in which the first pin is engaged with a surface of the first pin pocket and a second position in which the first pin is disengaged from the surface of the first pin pocket.

2 . The compressor of claim 1 , wherein the first pin pocket is arcuate and the surface of the first pin pocket is a working surface having a first arc center, and wherein the first pin pocket further includes a non-working surface having a second arc center that is spaced apart from the first arc center.

3 . The compressor of claim 2 , wherein the working surface spans a predetermined angle, and wherein the predetermined angle is defined by 360 degrees/number of pins.

4 . The compressor of claim 2 , wherein the first pin is disengaged from the working surface and the non-working surface when the first compression member is in the second position.

5 . The compressor of claim 2 , wherein the first pin pocket further includes a transition surface disposed between the working surface and the non-working surface, and wherein the first compression member is movable to a third position in which the first pin is moveably engaged with the transition surface.

6 . The compressor of claim 2 , wherein the bearing housing includes a second pin and the second compression member includes an arcuate-shaped second pin pocket formed in the base plate, the second pin extends through the second pin pocket, and wherein the second pin pocket includes a second working surface having a third arc center, a second non-working surface and a transition surface disposed between the second working surface and the second non-working surface, the second pin is engaged with the transition surface when the first compression member is in the first position.

7 . The compressor of claim 6 , wherein the second pin is adjacent to the first pin.

8 . The compressor of claim 6 , further comprising a driveshaft coupled to the first compression member and including first and second housings that receive respective first and second pins thereby coupling the first compression member and the bearing housing.

9 . The compressor of claim 1 , wherein the first pin pocket is formed in an outer diametrical surface of the base plate.

10 . The compressor of claim 1 , further comprising a driveshaft coupled to the first compression member and including a first housing that receives the first pin thereby coupling the first compression member and the bearing housing.

11 . A compressor comprising:
a shell assembly; a first compression member rotatable relative to the shell assembly about a first axis; a bearing housing coupled to the first compression member and rotatable relative to the shell assembly about the first axis, the bearing housing including a plurality of pins extending therefrom; and a second compression member rotatable relative to the shell assembly about a second axis that is spaced apart from the first axis, the second compression member cooperates with the first compression member to define fluid pockets, the second compression member including:
a base plate; and
pin pockets formed in the base plate and receiving a respective pin, each of the pin pockets having a working surface,
wherein the first compression member is moveable between a first position in which only one of the pins of the plurality of pins is engaged with the working surface of a respective pin pocket and a second position in which the one of the pins of the plurality of pins is disengaged from the working surface of the respective pin pocket.

12 . The compressor of claim 11 , wherein the working surface of each pin pocket has a first arc center and a non-working surface of each pin pocket has a second arc center, and wherein the second arc center is spaced apart from the first arc center.

13 . The compressor of claim 12 , wherein each of the pin pockets has a transition surface disposed between the working surface and the non-working surface, and wherein only one of the pins of the plurality of pins is engaged with the transition surface of a respective pin pocket when the first compression member is in the first position.

14 . The compressor of claim 11 , wherein the pin pockets are circumferentially disposed and spaced apart around the base plate and the pins are circumferentially disposed and spaced apart around an axial end surface of the bearing housing, and wherein the pin pockets are arcuate-shaped and formed in an outer diametrical surface of the base plate and extend through the base plate.

15 . A compressor comprising:
a shell assembly; a first compression member rotatable relative to the shell assembly about a first axis; a second compression member rotatable relative to the shell assembly about a second axis that is spaced apart from the first axis, the second compression member cooperates with the first compression member to define fluid pockets, the second compression member including a base plate and an arcuate-shaped pin pocket, the pin pocket formed in the base plate; and a pin coupled to the first compression member and received in the pin pocket, wherein the first compression member is moveable between a first position in which the pin is engaged with a surface of the pin pocket and a second position in which the pin is disengaged from the surface of the pin pocket, wherein the surface of the pin pocket is a working surface having a first arc center, and wherein the pin pocket further includes a non-working surface having a second arc center that is spaced apart from the first arc center.

16 . (canceled)

17 . The compressor of claim 15 , wherein the working surface has a predetermined angle, and wherein the predetermined angle is defined by 360 degrees/number of pins.

18 . The compressor of claim 15 , wherein the pin is disengaged from the working surface and the non-working surface when the first compression member is in the second position.

19 . The compressor of claim 15 , wherein the pin pocket further includes a transition surface disposed between the working surface and the non-working surface, and wherein the first compression member is movable to a third position in which the pin is moveably engaged with the transition surface.

20 . The compressor of claim 15 , further comprising a bearing housing coupled to the first compression member and rotatable relative to the shell assembly about the first axis.

Assignees

• Emerson Climate Technologies

Inventors

• Ignatiev Kirill M
• Antimonov Mikhail A
• Stover Robert C

Classifications

• F04C2240/60

  Shafts · CPC title

• F04C2240/50

  Bearings · CPC title

• F04C2240/40

  Electric motor · CPC title

• F04C2240/30

  Casings or housings · CPC title

• F04C29/0071

  Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft · CPC title