Patents by Inventor Amit Vaidya
Amit Vaidya has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11959484Abstract: Disclosed is a direct-drive refrigerant screw compressor, having: a housing; a compression chamber in the housing; a pair of rotors, each rotor of the pair of rotors being rotationally disposed in the compression chamber and including an outer surface with a screw-geared profile; wherein, for each rotor, the compressor includes: a plurality of bearing packs disposed within a respective plurality of bearing chambers; a working fluid disposed within each of the plurality of bearing chambers, the working fluid providing oil-free lubrication to the plurality of bearing packs; a plurality of bearing lubrication ports extending through the housing and into each of the plurality of bearing chambers, and configured for injecting the working fluid into each of the plurality of bearing chambers when the compressor is running.Type: GrantFiled: May 20, 2020Date of Patent: April 16, 2024Assignee: CARRIER CORPORATIONInventors: Yifan Qiu, David M. Rockwell, Amit Vaidya
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Patent number: 11959673Abstract: A refrigeration system includes a compressor for compressing a refrigerant, a condenser for cooling the refrigerant, an evaporator for heating the refrigerant, and a lubrication system for providing a lubricant mist to a movable component of the compressor. The lubrication system includes an ejector arranged in fluid communication with the compressor and the evaporator, wherein the lubricant mist is carried by the refrigerant to the movable component.Type: GrantFiled: June 26, 2018Date of Patent: April 16, 2024Assignee: CARRIER CORPORATIONInventors: Jeremy Wallet-Laily, Ulf J. Jonsson, Charbel Rahhal, Nicolas Fonte, Zaffir A. Chaudhry, David M. Rockwell, Amit Vaidya, Scott M. MacBain, Yifan Qiu, Benjamin J. Blechman
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Publication number: 20240102472Abstract: Disclosed is a direct-drive refrigerant screw compressor, having: a housing; a compression chamber in the housing; a pair of rotors, each rotor of the pair of rotors being rotationally disposed in the compression chamber and including an outer surface with a screw-geared profile; a fluid being disposed in the compression chamber, the fluid consisting of a working fluid for providing lubrication to each rotor; a first port extending through the housing and configured for directing the fluid toward the compression chamber; and when the compressor is activated, each rotor rotates and the fluid is distributed about each rotor to lubricate each rotor.Type: ApplicationFiled: November 30, 2023Publication date: March 28, 2024Inventors: Yifan QIU, Amit VAIDYA, Ulf J. JONSSON, Zaffir A. CHAUDHRY, David M. ROCKWELL
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Patent number: 11898561Abstract: Disclosed is a direct-drive refrigerant screw compressor, having: a housing; a compression chamber in the housing; a pair of rotors, each rotor of the pair of rotors being rotationally disposed in the compression chamber and including an outer surface with a screw-geared profile; a fluid being disposed in the compression chamber, the fluid consisting of a working fluid for providing lubrication to each rotor; a first port extending through the housing and configured for directing the fluid toward the compression chamber; and when the compressor is activated, each rotor rotates and the fluid is distributed about each rotor to lubricate each rotor.Type: GrantFiled: May 19, 2020Date of Patent: February 13, 2024Assignee: CARRIER CORPORATIONInventors: Yifan Qiu, Amit Vaidya, Ulf J. Jonsson, Zaffir A. Chaudhry, David M. Rockwell
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Patent number: 11519409Abstract: A screw compressor includes a housing, a first rotor rotatable about a first axis relative to the housing, and a second rotor rotatable about a second axis relative to the housing. The second rotor is enmeshed with the first rotor. A motor is embedded within the first rotor such that the motor is coaxial with the first axis.Type: GrantFiled: April 25, 2019Date of Patent: December 6, 2022Assignee: CARRIER CORPORATIONInventor: Amit Vaidya
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Publication number: 20220372978Abstract: A screw compressor includes an outlet housing. The outlet housing includes a passage that is configured to communicate compressed fluid from a screw rotor to a discharge. A removable cover plate is configured to cover a portion of the passage. A method of varying a volume index for a screw compressor is also disclosed.Type: ApplicationFiled: October 7, 2020Publication date: November 24, 2022Inventors: David Okhman, David M. Rockwell, Amit Vaidya, Yifan Qiu, Brandon Schwoeppe, Joshua S. Lavoie
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Publication number: 20220074415Abstract: Disclosed is a direct-drive refrigerant screw compressor, having: a housing; a compression chamber in the housing; a pair of rotors, each rotor of the pair of rotors being rotationally disposed in the compression chamber and including an outer surface with a screw-geared profile; wherein, for each rotor, the compressor includes: a plurality of bearing packs disposed within a respective plurality of bearing chambers; a working fluid disposed within each of the plurality of bearing chambers, the working fluid providing oil-free lubrication to the plurality of bearing packs; a plurality of bearing lubrication ports extending through the housing and into each of the plurality of bearing chambers, and configured for injecting the working fluid into each of the plurality of bearing chambers when the compressor is running.Type: ApplicationFiled: May 20, 2020Publication date: March 10, 2022Inventors: Yifan QIU, David M. ROCKWELL, Amit VAIDYA
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Publication number: 20220065252Abstract: Disclosed is a direct-drive refrigerant screw compressor, having: a housing; a compression chamber in the housing; a pair of rotors, each rotor of the pair of rotors being rotationally disposed in the compression chamber and including an outer surface with a screw-geared profile; a fluid being disposed in the compression chamber, the fluid consisting of a working fluid for providing lubrication to each rotor; a first port extending through the housing and configured for directing the fluid toward the compression chamber; and when the compressor is activated, each rotor rotates and the fluid is distributed about each rotor to lubricate each rotor.Type: ApplicationFiled: May 19, 2020Publication date: March 3, 2022Inventors: Yifan QIU, Amit VAIDYA, Ulf J. JONSSON, Zaffir A. CHAUDHRY, David M. ROCKWELL
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Publication number: 20220027849Abstract: A computer implemented method for providing a service for a complex industrial system, the method including the steps of providing Bill of Materials, BoM, trees of system component instances of said complex industrial system; generating automatically a unified BoM data model by clustering matching nodes within the provided BoM trees; and performing the service for the complex industrial system based on the generated unified BoM data model is provided.Type: ApplicationFiled: December 11, 2019Publication date: January 27, 2022Inventors: Dagmar Beyer, Mitchell Joblin, Lutz Lukas, Benjamin Paul, Martin Ringsquandl, Nataliia Rümmele, Amit Vaidya
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Publication number: 20210247115Abstract: A refrigeration system includes a compressor for compressing a refrigerant, a condenser for cooling the refrigerant, an evaporator for heating the refrigerant, and a lubrication system for providing a lubricant mist to a movable component of the compressor. The lubrication system includes an ejector arranged in fluid communication with the compressor and the evaporator, wherein the lubricant mist is carried by the refrigerant to the movable component.Type: ApplicationFiled: June 26, 2018Publication date: August 12, 2021Inventors: Jeremy Wallet-Laily, Ulf J. Jonsson, Charbel Rahhal, Nicolas Fonte, Zaffir A. Chaudhry, David M. Rockwell, Amit Vaidya, Scott M. MacBain, Yifan Qiu, Benjamin J. Blechman
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Publication number: 20210172439Abstract: A screw compressor includes a housing, a first rotor rotatable about a first axis relative to the housing, and a second rotor rotatable about a second axis relative to the housing. The second rotor is enmeshed with the first rotor. A motor is embedded within the first rotor such that the motor is coaxial with the first axis.Type: ApplicationFiled: April 25, 2019Publication date: June 10, 2021Inventor: Amit Vaidya
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Patent number: 10808969Abstract: A compressor (22) has a male rotor (52), a female rotor (54), and a housing (50). The housing has a first bore (114) and a second bore (116) respectively accommodating portions of the male rotor and the female rotor. The housing has an inlet (26), an outlet (28), an economizer port (150) along at least one of the first bore and the second bore, and an external port (46) communicating with the economizer port. The housing has a chamber (152) between the economizer port and the external port having a volume of at least 0.8 liter.Type: GrantFiled: August 11, 2016Date of Patent: October 20, 2020Assignee: Carrier CorporationInventors: Amit Vaidya, David M. Rockwell, Peter J. Pileski
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Patent number: 10436196Abstract: A compressor (22) comprises a housing (50) having a first port (26) and a second port (28). A male rotor (52) has a working portion (64) having a plurality of lobes (110) of a count (NM) and at least a first shaft portion (62) protruding beyond a first end (68) of the male rotor working portion and mounted for rotation about a first axis (500). A female rotor (54) has a working portion (66) having a plurality of lobes (112) of a count (NF) and mounted for rotation about a second axis (502) so as to be enmeshed with the male rotor working portion. An electric motor (56) is within the housing and has a stator (58) and a rotor (60) mounted to the first shaft portion. The compressor has no additional compressor rotors. The lobe count of the male rotor is less than the lobe count of the female rotor. A combined lobe count (NM+NF) is at least fifteen.Type: GrantFiled: June 1, 2015Date of Patent: October 8, 2019Assignee: Carrier CorporationInventor: Amit Vaidya
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Publication number: 20180156501Abstract: A compressor (22) has a male rotor (52), a female rotor (54), and a housing (50). The housing has a first bore (114) and a second bore (116) respectively accommodating portions of the male rotor and the female rotor. The housing has an inlet (26), an outlet (28), an economizer port (150) along at least one of the first bore and the second bore, and an external port (46) communicating with the economizer port. The housing has a chamber (152) between the economizer port and the external port having a volume of at least 0.8 liter.Type: ApplicationFiled: August 11, 2016Publication date: June 7, 2018Applicant: Carrier CorporationInventors: Amit Vaidya, David M. Rockwell, Peter J. Pileski
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Publication number: 20170122318Abstract: A compressor (22) comprises a housing (50) having a first port (26) and a second port (28). A male rotor (52) has a working portion (64) having a plurality of lobes (110) of a count (NM) and at least a first shaft portion (62) protruding beyond a first end (68) of the male rotor working portion and mounted for rotation about a first axis (500). A female rotor (54) has a working portion (66) having a plurality of lobes (112) of a count (NF) and mounted for rotation about a second axis (502) so as to be enmeshed with the male rotor working portion. An electric motor (56) is within the housing and has a stator (58) and a rotor (60) mounted to the first shaft portion. The compressor has no additional compressor rotors. The lobe count of the male rotor is less than the lobe count of the female rotor. A combined lobe count (NM+NF) is at least fifteen.Type: ApplicationFiled: June 1, 2015Publication date: May 4, 2017Applicant: Carrier CorporationInventor: Amit Vaidya
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Publication number: 20130243618Abstract: A shaft seal assembly has a support body (222) and a seal (200). The support body extends from a first end (210) to a second end (212) and has a central passageway (214) for accommodating the shaft. The support body has a compliant axially intermediate portion (230), an axially out-board portion (228) outboard of the compliant intermediate portion, and an axially inboard portion (226) inboard of the intermediate portion. The in-board portion has an externally threaded portion (270) and a plurality of slots (290) through the externally threaded portion. The seal is carried by the out-board portion.Type: ApplicationFiled: June 18, 2012Publication date: September 19, 2013Applicant: CARRIER CORPORATIONInventors: Steven E. Von Borstel, Amit Vaidya
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Publication number: 20120093665Abstract: A compressor, as well as a lightweight and strong casting for a compressor, are disclosed. The compressor, which may be a reciprocating compressor for use in compressing high-pressure refrigerants such as CO2, includes substantially reduced wall thicknesses (t) compared to prior art castings. The side walls of the compressor can be manufactured to such reduced thicknesses (t) through the use of a bridge spanning across the crankcase. This not only allows the opposing side walls to be manufactured of a thinner material, but the bottom cover removably mounted to the crankcase can be manufactured from a thinner and lighter material as well. Through the use of such a bridge, the resulting compressor is not only able to satisfy current strength requirements, but at significant weight, size and cost savings as well.Type: ApplicationFiled: May 25, 2010Publication date: April 19, 2012Inventors: Paul J. Flanigan, Peter J. Pileski, Amit Vaidya