US 12,163,518 B2Granted

Multistage compressor system with intercooler

OwnerMark W. Woodinventor

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Abstract

A multistage compressor system with intercooler can include a sealed housing with first and second compressor stages, where the first compressor stage is for receiving refrigerant from outside of the sealed housing, and the second compressor stage is for receiving refrigerant from within the sealed housing. The compressor system can also include a crank for mechanically driving the first compressor stage and/or the second compressor stage, and a heat exchanger outside of the sealed housing for receiving refrigerant from the first compressor stage and exchanging heat with the refrigerant. The compressor system can further include an oil reservoir contained by the sealed housing, where the oil reservoir includes oil for lubricating the crank, receives the refrigerant from the heat exchanger, and exchanges heat with the refrigerant to cool the oil in the oil reservoir, and where the refrigerant can be supplied to the second compressor stage.

Claims20

Dependent claims

A positive displacement device comprising:

a first cylinder having a wall with an interior surface and an exterior surface;
a vane slidably extending through the wall of the first cylinder, at least one of the wall of the first cylinder proximate to the vane and the vane defining a channel to facilitate lubrication of the vane;
a second cylinder disposed within the first cylinder, the second cylinder having an exterior surface, the interior surface of the first cylinder and the exterior surface of the second cylinder defining an inner cavity therebetween, the vane moveable with respect to the second cylinder and in sealing contact between the interior surface of the first cylinder and the exterior surface of the second cylinder to divide the inner cavity into a first inner region and a second inner region;
a first intake port in fluid communication with the first inner region of the inner cavity;
a first exhaust port in fluid communication with the second inner region of the inner cavity;
a third cylinder disposed around the first cylinder, the third cylinder having an interior surface, the exterior surface of the first cylinder and the interior surface of the third cylinder defining an outer cavity therebetween, the vane moveable with respect to the third cylinder and in sealing contact between the exterior surface of the first cylinder and the interior surface of the third cylinder to divide the outer cavity into a first outer region and a second outer region;
a second intake port in fluid communication with the first outer region of the outer cavity;
a second exhaust port in fluid communication with the second outer region of the outer cavity;
a first sealing interface for sealing first ends of the inner cavity and the outer cavity;
and
a second sealing interface for sealing second ends of the inner cavity and the outer cavity, wherein the second cylinder and the third cylinder are configured to orbit with respect to the first cylinder to create alternating regions of high pressure and low pressure in the first and second inner regions of the inner cavity and the first and second outer regions of the outer cavity.

8 more elements

A positive displacement device comprising:

a first cylinder having a wall with an interior surface and an exterior surface;
a vane slidably extending through the wall of the first cylinder, at least one of the wall of the first cylinder proximate to the vane and the vane defining a channel to facilitate lubrication of the vane;
a second cylinder disposed within the first cylinder, the second cylinder having an exterior surface, the interior surface of the first cylinder and the exterior surface of the second cylinder defining an inner cavity therebetween, the vane moveable with respect to the second cylinder and in sealing contact between the interior surface of the first cylinder and the exterior surface of the second cylinder to divide the inner cavity into a first inner region and a second inner region;
a first intake port in fluid communication with the first inner region of the inner cavity;
a first exhaust port in fluid communication with the second inner region of the inner cavity;
a third cylinder disposed around the first cylinder, the third cylinder having an interior surface, the exterior surface of the first cylinder and the interior surface of the third cylinder defining an outer cavity therebetween, the vane moveable with respect to the third cylinder and in sealing contact between the exterior surface of the first cylinder and the interior surface of the third cylinder to divide the outer cavity into a first outer region and a second outer region;
a second intake port in fluid communication with the first outer region of the outer cavity;
a second exhaust port in fluid communication with the second outer region of the outer cavity;
a first sealing interface for sealing first ends of the inner cavity and the outer cavity;
a second sealing interface for sealing second ends of the inner cavity and the outer cavity, wherein the second cylinder and the third cylinder are configured to orbit with respect to the first cylinder to create alternating regions of high pressure and low pressure in the first and second inner regions of the inner cavity and the first and second outer regions of the outer cavity;
and
an end plate for connecting the second cylinder and the third cylinder together, the end plate forming one of the first sealing interface or the second sealing interface.

9 more elements

A positive displacement device comprising:

a first cylinder having a wall with an interior surface and an exterior surface;
a vane slidably extending through the wall of the first cylinder, at least one of the wall of the first cylinder proximate to the vane and the vane defining a channel to facilitate lubrication of the vane;
a second cylinder disposed within the first cylinder, the second cylinder having an exterior surface, the interior surface of the first cylinder and the exterior surface of the second cylinder defining an inner cavity therebetween, the vane moveable with respect to the second cylinder and in sealing contact between the interior surface of the first cylinder and the exterior surface of the second cylinder to divide the inner cavity into a first inner region and a second inner region;
a first intake port in fluid communication with the first inner region of the inner cavity;
a first exhaust port in fluid communication with the second inner region of the inner cavity;
a third cylinder disposed around the first cylinder, the third cylinder having an interior surface, the exterior surface of the first cylinder and the interior surface of the third cylinder defining an outer cavity therebetween, the vane moveable with respect to the third cylinder and in sealing contact between the exterior surface of the first cylinder and the interior surface of the third cylinder to divide the outer cavity into a first outer region and a second outer region;
a second intake port in fluid communication with the first outer region of the outer cavity;
a second exhaust port in fluid communication with the second outer region of the outer cavity;
a first sealing interface for sealing first ends of the inner cavity and the outer cavity;
a second sealing interface for sealing second ends of the inner cavity and the outer cavity, wherein the second cylinder and the third cylinder are configured to orbit with respect to the first cylinder to create alternating regions of high pressure and low pressure in the first and second inner regions of the inner cavity and the first and second outer regions of the outer cavity;
a first end plate for connecting the second cylinder and the third cylinder together, the first end plate forming one of the first sealing interface or the second sealing interface;
and
a second end plate connected to the first cylinder, the second end plate forming the other of the first sealing interface or the second sealing interface.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/972,228Filed 24 Oct 2022 · continuation
Priority: 27 Apr 2016
Published: US 2023/0144667 A111 May 2023
Granted: 10 Dec 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

F04C 18/3441
With vanes reciprocating with respect to the inner member: the inner and outer member being in contact along one line or continuous surface…
F04C 18/3564
The inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation: the surfaces of…
F04C 15/06
Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00: arrangements…
F04C 18/3443
The inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation: with a separation…

Family

Application15/139,608Parent of this continuation · filed 27 Apr 2016
PCT/US2016/060807Parent of this continuation-in-part · filed 7 Nov 2016
Application16/348,059Parent of this continuation-in-part · filed 7 May 2019
Application16/780,371Parent of this continuation · filed 3 Feb 2020
US 11,022,118 B2Parent of this continuation-in-part · filed 1 Jun 2021
US 11,339,786 B2Parent of this continuation-in-part · filed 24 May 2022
US 2023/0144667 A1Pre-grant publication · published 11 May 2023
US 11,480,178 B2Parent of this continuation
Application16/780,371Parent of this continuation-in-part
Application16/044,106Parent of this continuation-in-part
US 10,030,658 B2Parent of this continuation
Application16/044,106Parent of this continuation
US 2017/0314559 A1Published application
US 2019/0024661 A1Published application
US 2019/0301463 A1Published application
US 2020/0173438 A1Published application
US 12,163,518 B2This patent

From the US filing history. Foreign family members aren’t listed.