This disclosure relates to a scroll type device and more particularly to a scroll type device, such as a compressor, expander, or a vacuum pump, having liquid cooling though idler shafts.
Scroll devices have been used as compressors, expanders, pumps, and vacuum pumps for many years. In general, they have been limited to a single stage of compression due to the complexity of two or more stages. In a single stage, a spiral involute or scroll upon a rotating plate orbits within a fixed spiral or scroll upon a stationery plate. A motor shaft turns a shaft that orbits a scroll eccentrically within a fixed scroll. The eccentric orbit forces a gas through and out of the fixed scroll thus creating a vacuum in a container in communication with the fixed scroll. An expander operates with the same principle only turning the scrolls in reverse. When referring to compressors, it is understood that a vacuum pump can be substituted for compressor and that an expander can be an alternate usage when the scrolls operate in reverse from an expanding gas.
Scroll type compressors, expanders, and vacuum pumps generate heat as part of the compression, expansion, or pumping process. The higher the pressure ratio the higher the temperature of the compressed fluid. In order to keep the compressor hardware to a reasonable temperature, the compressor must be cooled or damage may occur to the hardware. In some cases, cooling is accomplished by blowing cool ambient air over the compressor components. However, in some cases, such as space limitations or that there is too much heat to be dissipated, air cooling may not be effective. The use of a liquid to cool a compressor may be beneficial because liquid has a much higher heat transfer coefficient than air. One attempt to liquid cool a compressor involves the use of a flexible bellows type device to transfer heat from the compressor to the liquid. Although bellows are useful, bellows are also expensive and have limited life. If the bellows fails then the compressor may be damaged.
The present disclosure overcomes the limitations of the prior art where a need exists for liquid cooling of a scroll type device. The present disclosure provides a scroll type device that incorporates liquid cooling through the use of the idler shafts.
Accordingly, the present disclosure is a scroll device that comprises a housing, a motor having a shaft, an orbiting scroll connected to the shaft for moving the orbiting scroll, a fixed scroll mated to the orbiting scroll, an idler shaft for aligning the orbiting scroll and the fixed scroll, an inlet formed in the housing for receiving a cooling liquid, and a channel formed in the idler shaft for receiving the cooling liquid.
In another embodiment of a scroll device of the present disclosure, a scroll device comprises a housing, a motor having a shaft, an orbiting scroll connected to the shaft for moving the orbiting scroll, a fixed scroll mated to the orbiting scroll, an idler shaft for aligning the orbiting scroll and the fixed scroll, a bearing for supporting the idler shaft, an inlet formed in the housing and/or the fixed scroll for receiving a cooling liquid, a channel formed in the idler shaft for receiving the cooling liquid, and a radial shaft seal for preventing any cooling liquid to leak into the bearing.
In still another embodiment of a scroll device constructed according to the present disclosure, a scroll device comprises a housing, a motor having a shaft, an orbiting scroll connected to the shaft for moving the orbiting scroll, a fixed scroll mated to the orbiting scroll, an idler shaft for aligning the orbiting scroll and the fixed scroll, a bearing for supporting the idler shaft, an inlet formed in the housing for receiving a cooling liquid, a channel formed in the idler shaft for receiving the cooling liquid, and an access cross hole for a sealing check.
Another embodiment of a scroll device comprises a housing, a motor having a shaft, an orbiting scroll connected to the shaft for moving the orbiting scroll, a fixed scroll mated to the orbiting scroll, an idler shaft for aligning the orbiting scroll and the fixed scroll, a bearing for supporting the idler shaft, an inlet formed in the housing for receiving a cooling liquid, a channel formed in the idler shaft for receiving the cooling liquid, and a radial shaft seal for preventing any cooling liquid to leak into the bearing, a seal retainer plate, and a cover.
In yet another embodiment of a scroll device, the scroll device comprises a housing, a motor having a shaft, an orbiting scroll connected to the shaft for moving the orbiting scroll, a fixed scroll mated to the orbiting scroll, an idler shaft for aligning the orbiting scroll and the fixed scroll, a bearing for supporting the idler shaft, an inlet formed in the housing for receiving a cooling liquid, a channel formed in the idler shaft for receiving the cooling liquid, and a plate having a fin for directing flow of the cooling liquid to reduce any stagnated flow of the cooling liquid.
In another embodiment of a scroll device constructed according to the present disclosure, a scroll device comprises a housing, a motor having a shaft, an orbiting scroll connected to the shaft for moving the orbiting scroll, a fixed scroll mated to the orbiting scroll, a first idler shaft, a second idler shaft and a third idler shaft, an inlet formed in the housing for receiving a cooling liquid, and a channel formed in each of the idler shafts for receiving the cooling liquid with the first idler shaft for receiving the cooling liquid to flow in a first direction and the second idler shaft and the third idler shaft for receiving the cooling liquid to flow in a second direction with the first direction being opposite to the second direction.
Also, a scroll device comprises a housing, a motor having a shaft, an orbiting scroll connected to the shaft for moving the orbiting scroll, a fixed scroll mated to the orbiting scroll, a first idler shaft, a second idler shaft and a third idler shaft, a pair of bearings for supporting the idler shafts, an inlet formed in the housing for receiving a cooling liquid, and a channel formed in each of the idler shafts for receiving the cooling liquid.
Various other embodiments of a scroll device are disclosed herein.
Therefore, the present disclosure provides a new and improved scroll device from the machine class of compressors, vacuum pumps, and expanders for gases that incorporates liquid cooling through the use of idler shafts.
The present disclosure provides a scroll type device that is capable of operating at lower temperatures.
The present disclosure also provides a scroll device that is capable of longer life as compared to other scroll type devices.
The present disclosure provides a scroll device that is capable of reducing heat generated by the scroll device through the use of a cooling fluid or liquid that may flow through one or more idler shafts associated with the scroll device.
The present disclosure relates to a scroll device that uses liquid cooling to cool any bearings associated with idler shafts incorporated into the scroll device.
The present disclosure further provides a scroll device that has idler shafts that have channels for a cooling fluid or liquid to flow therein to reduce the temperature of bearings contained within the scroll device so that the useful life of the bearings is increased.
The present disclosure also provides a scroll device that employs a fin design to force the flow any cooling fluid or liquid within the scroll device to reduce a stagnated flow of the cooling fluid or liquid.
Also, the present disclosure provides a scroll device that employees dynamic shaft seals and a bearing slinger cover to prevent the escape of any cooling fluid or liquid from within the scroll device.
The present scroll device has mechanical shaft seals to prevent the escape of any cooling fluid or liquid from within the scroll device that may contact any bearings in the scroll device.
The present disclosure is further directed to a scroll device that uses drains to drain any cooling fluid or liquid away from any bearings in the scroll device.
The present disclosure is directed to a scroll device that uses slingers and drains to drain any cooling fluid or liquid away from any bearings in the scroll device.
The present disclosure is also directed to a scroll device that employees idler shafts that have channels formed therein to allow a cooling fluid or liquid to flow therein with one of the idler shafts being used as an inlet for the cooling fluid or liquid and another idler shaft being used as an exit for the cooling fluid or liquid allowing the cooling fluid to enter and exit and cool the orbiting scroll.
These and other advantages may become more apparent to those skilled in the art upon review of the disclosure as described herein, and upon undertaking a study of the description of its preferred embodiment, when viewed in conjunction with the drawings.
Referring now to the drawings, wherein like numbers refer to like items, number 10 identifies a preferred embodiment of a scroll device having liquid cooling though use of idler shafts constructed according to the present disclosure. In
With reference now to
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With particular reference now to
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From the aforementioned description, a scroll device 10 from the machine class of scroll compressors, pumps, and expanders has been described. The scroll device 10 is capable of expanding and compressing a fluid cyclically to evacuate a line, device, or space connected to the scroll device 10 without intrusion of the nearby atmosphere. The scroll device 10 receives its motive power directly from a motor or alternatively from a motor connected to a magnetic coupling, further minimizing the incidence of atmospheric intrusion within the housing and the working fluid. The present disclosure and its various components may adapt existing equipment and may be manufactured from many materials including but not limited to metal sheets and foils, elastomers, steel plates, polymers, high density polyethylene, polypropylene, polyvinyl chloride, nylon, ferrous and non-ferrous metals, various alloys, and composites.
From all that has been said, it will be clear that there has thus been shown and described herein a scroll device having liquid cooling through use of idler shafts. It will become apparent to those skilled in the art, however, that many changes, modifications, variations, and other uses and applications of the subject scroll device are possible and contemplated. All changes, modifications, variations, and other uses and applications which do not depart from the spirit and scope of the disclosure are deemed to be covered by the disclosure, which is limited only by the claims which follow.
This application is a continuation of U.S. patent application Ser. No. 15/732,593, filed on Nov. 30, 2017, and entitled “Scroll Type Device Having Liquid Cooling Through Idler Shafts,” which claims the benefits of priority under 35 U.S.C. § 119(e) to U.S. Provisional Application No. 62/497,869, filed on Dec. 6, 2016, and entitled “Scroll Type Device Having Liquid Cooling Through Idler Shafts.” The entire disclosures of each of the foregoing references are incorporated by reference herein.
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Number | Date | Country | |
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20210071669 A1 | Mar 2021 | US |
Number | Date | Country | |
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62497869 | Dec 2016 | US |
Number | Date | Country | |
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Parent | 15732593 | Nov 2017 | US |
Child | 16950690 | US |